SPD-703-1 - RADProductsOnline
SPD-703-1
G.703 Codirectional Rate and Interface Converter
Innovative Access Solutions
SPD-703-1
G.703 Codirectional Rate and Interface Converter
Installation and Operation Manual
Notice
This manual contains information that is proprietary to RAD Data Communications Ltd. ("RAD").
No part of this publication may be reproduced in any form whatsoever without prior written approval by RAD Data Communications.
Right, title and interest, all information, copyrights, patents, know-how, trade secrets and other intellectual property or other proprietary rights relating to this manual and to the SPD-703-1 and any software components contained therein are proprietary products of RAD protected under international copyright law and shall be and remain solely with RAD.
SPD-703-1 is a registered trademark of RAD. No right, license, or interest to such trademark is granted hereunder, and you agree that no such right, license, or interest shall be asserted by you with respect to such trademark.
You shall not copy, reverse compile or reverse assemble all or any portion of the Manual or the
SPD-703-1. You are prohibited from, and shall not, directly or indirectly, develop, market, distribute, license, or sell any product that supports substantially similar functionality as the SPD-
703-1, based on or derived in any way from the SPD-703-1. Your undertaking in this paragraph shall survive the termination of this Agreement.
This Agreement is effective upon your opening of the SPD-703-1 package and shall continue until terminated. RAD may terminate this Agreement upon the breach by you of any term hereof.
Upon such termination by RAD, you agree to return to RAD the SPD-703-1 and all copies and portions thereof.
For further information contact RAD at the address below or contact your local distributor.
International Headquarters
RAD Data Communications Ltd.
24 Raoul Wallenberg Street
Tel Aviv 69719, Israel
Tel: 972-3-6458181
Fax: 972-3-6498250, 6474436
E-mail: market@rad.com
©2005–2007 RAD Data Communications Ltd.
North America Headquarters
RAD Data Communications Inc.
900 Corporate Drive
Mahwah, NJ 07430, USA
Tel: (201) 5291100, Toll free: 1-800-4447234
Fax: (201) 5295777
E-mail: market@radusa.com
Publication No. 452-200-07/07
Limited Warranty
RAD warrants to DISTRIBUTOR that the hardware in the SPD-703-1 to be delivered hereunder shall be free of defects in material and workmanship under normal use and service for a period of twelve (12) months following the date of shipment to DISTRIBUTOR.
If, during the warranty period, any component part of the equipment becomes defective by reason of material or workmanship, and DISTRIBUTOR immediately notifies RAD of such defect,
RAD shall have the option to choose the appropriate corrective action: a) supply a replacement part, or b) request return of equipment to its plant for repair, or c) perform necessary repair at the equipment's location. In the event that RAD requests the return of equipment, each party shall pay one-way shipping costs.
RAD shall be released from all obligations under its warranty in the event that the equipment has been subjected to misuse, neglect, accident or improper installation, or if repairs or modifications were made by persons other than RAD's own authorized service personnel, unless such repairs by others were made with the written consent of RAD.
The above warranty is in lieu of all other warranties, expressed or implied. There are no warranties which extend beyond the face hereof, including, but not limited to, warranties of merchantability and fitness for a particular purpose, and in no event shall RAD be liable for consequential damages.
RAD shall not be liable to any person for any special or indirect damages, including, but not limited to, lost profits from any cause whatsoever arising from or in any way connected with the manufacture, sale, handling, repair, maintenance or use of the SPD-703-1, and in no event shall
RAD's liability exceed the purchase price of the SPD-703-1.
DISTRIBUTOR shall be responsible to its customers for any and all warranties which it makes relating to SPD-703-1 and for ensuring that replacements and other adjustments required in connection with the said warranties are satisfactory.
Software components in the SPD-703-1 are provided "as is" and without warranty of any kind.
RAD disclaims all warranties including the implied warranties of merchantability and fitness for a particular purpose. RAD shall not be liable for any loss of use, interruption of business or indirect, special, incidental or consequential damages of any kind. In spite of the above RAD shall do its best to provide error-free software products and shall offer free Software updates during the warranty period under this Agreement.
RAD's cumulative liability to you or any other party for any loss or damages resulting from any claims, demands, or actions arising out of or relating to this Agreement and the SPD-703-1 shall not exceed the sum paid to RAD for the purchase of the SPD-703-1. In no event shall RAD be liable for any indirect, incidental, consequential, special, or exemplary damages or lost profits, even if RAD has been advised of the possibility of such damages.
This Agreement shall be construed and governed in accordance with the laws of the State of
Israel.
Product Disposal
To facilitate the reuse, recycling and other forms of recovery of waste equipment in protecting the environment, the owner of this RAD product is required to refrain from disposing of this product as unsorted municipal waste at the end of its life cycle. Upon termination of the unit’s use, customers should provide for its collection for reuse, recycling or other form of environmentally conscientious disposal.
General Safety Instructions
The following instructions serve as a general guide for the safe installation and operation of telecommunications products. Additional instructions, if applicable, are included inside the manual.
Safety Symbols
Warning
This symbol may appear on the equipment or in the text. It indicates potential safety hazards regarding product operation or maintenance to operator or service personnel.
Danger of electric shock! Avoid any contact with the marked surface while the product is energized or connected to outdoor telecommunication lines.
Protective earth: the marked lug or terminal should be connected to the building protective earth bus.
Warning
Some products may be equipped with a laser diode. In such cases, a label with the laser class and other warnings as applicable will be attached near the optical transmitter. The laser warning symbol may be also attached.
Please observe the following precautions:
• Before turning on the equipment, make sure that the fiber optic cable is intact and is connected to the transmitter.
• Do not attempt to adjust the laser drive current.
• Do not use broken or unterminated fiber-optic cables/connectors or look straight at the laser beam.
• The use of optical devices with the equipment will increase eye hazard.
• Use of controls, adjustments or performing procedures other than those specified herein, may result in hazardous radiation exposure.
ATTENTION: The laser beam may be invisible!
In some cases, the users may insert their own SFP laser transceivers into the product. Users are alerted that RAD cannot be held responsible for any damage that may result if non-compliant transceivers are used. In particular, users are warned to use only agency approved products that comply with the local laser safety regulations for Class 1 laser products.
Always observe standard safety precautions during installation, operation and maintenance of this product. Only qualified and authorized service personnel should carry out adjustment, maintenance or repairs to this product. No installation, adjustment, maintenance or repairs should be performed by either the operator or the user.
Handling Energized Products
General Safety Practices
Do not touch or tamper with the power supply when the power cord is connected. Line voltages may be present inside certain products even when the power switch (if installed) is in the OFF position or a fuse is blown. For DC-powered products, although the voltages levels are usually not hazardous, energy hazards may still exist.
Before working on equipment connected to power lines or telecommunication lines, remove jewelry or any other metallic object that may come into contact with energized parts.
Unless otherwise specified, all products are intended to be grounded during normal use.
Grounding is provided by connecting the mains plug to a wall socket with a protective earth terminal. If an earth lug is provided on the product, it should be connected to the protective earth at all times, by a wire with a diameter of 18 AWG or wider. Rack-mounted equipment should be mounted only in earthed racks and cabinets.
Always make the ground connection first and disconnect it last. Do not connect telecommunication cables to ungrounded equipment. Make sure that all other cables are disconnected before disconnecting the ground.
Connecting AC Mains
Make sure that the electrical installation complies with local codes.
Always connect the AC plug to a wall socket with a protective ground.
The maximum permissible current capability of the branch distribution circuit that supplies power to the product is 16A. The circuit breaker in the building installation should have high breaking capacity and must operate at short-circuit current exceeding 35A.
Always connect the power cord first to the equipment and then to the wall socket. If a power switch is provided in the equipment, set it to the OFF position. If the power cord cannot be readily disconnected in case of emergency, make sure that a readily accessible circuit breaker or emergency switch is installed in the building installation.
In cases when the power distribution system is IT type, the switch must disconnect both poles simultaneously.
Connecting DC Power
Unless otherwise specified in the manual, the DC input to the equipment is floating in reference to the ground. Any single pole can be externally grounded.
Due to the high current capability of DC power systems, care should be taken when connecting the DC supply to avoid short-circuits and fire hazards.
DC units should be installed in a restricted access area, i.e. an area where access is authorized only to qualified service and maintenance personnel.
Make sure that the DC power supply is electrically isolated from any AC source and that the installation complies with the local codes.
The maximum permissible current capability of the branch distribution circuit that supplies power to the product is 16A. The circuit breaker in the building installation should have high breaking capacity and must operate at short-circuit current exceeding 35A.
Before connecting the DC supply wires, ensure that power is removed from the DC circuit. Locate the circuit breaker of the panel board that services the equipment and switch it to the OFF position. When connecting the DC supply wires, first connect the ground wire to the corresponding terminal, then the positive pole and last the negative pole. Switch the circuit breaker back to the ON position.
A readily accessible disconnect device that is suitably rated and approved should be incorporated in the building installation.
If the DC power supply is floating, the switch must disconnect both poles simultaneously.
Connecting Data and Telecommunications Cables
Data and telecommunication interfaces are classified according to their safety status.
The following table lists the status of several standard interfaces. If the status of a given port differs from the standard one, a notice will be given in the manual.
V.11, V.28, V.35, V.36, RS-530, X.21,
10 BaseT, 100 BaseT, Unbalanced E1,
E2, E3, STM, DS-2, DS-3, S-Interface
ISDN, Analog voice E&M xDSL (without feeding voltage),
Balanced E1, T1, Sub E1/T1
SELV Safety Extra Low Voltage:
Ports which do not present a safety hazard. Usually up to 30 VAC or 60 VDC.
FXS (Foreign Exchange Subscriber)
FXO (Foreign Exchange Office), xDSL
(with feeding voltage), U-Interface
ISDN
TNV-1 Telecommunication Network Voltage-1:
Ports whose normal operating voltage is within the limits of SELV, on which overvoltages from telecommunications networks are possible.
TNV-2 Telecommunication Network Voltage-2:
Ports whose normal operating voltage exceeds the limits of SELV (usually up to 120 VDC or telephone ringing voltages), on which overvoltages from telecommunication networks are not possible. These ports are not permitted to be directly connected to external telephone and data lines.
TNV-3 Telecommunication Network Voltage-3:
Ports whose normal operating voltage exceeds the limits of SELV (usually up to 120 VDC or telephone ringing voltages), on which overvoltages from telecommunication networks are possible.
Always connect a given port to a port of the same safety status. If in doubt, seek the assistance of a qualified safety engineer.
Always make sure that the equipment is grounded before connecting telecommunication cables.
Do not disconnect the ground connection before disconnecting all telecommunications cables.
Some SELV and non-SELV circuits use the same connectors. Use caution when connecting cables.
Extra caution should be exercised during thunderstorms.
When using shielded or coaxial cables, verify that there is a good ground connection at both ends. The earthing and bonding of the ground connections should comply with the local codes.
The telecommunication wiring in the building may be damaged or present a fire hazard in case of contact between exposed external wires and the AC power lines. In order to reduce the risk,
there are restrictions on the diameter of wires in the telecom cables, between the equipment and the mating connectors.
Caution To reduce the risk of fire, use only No. 26 AWG or larger telecommunication line cords.
Attention Pour réduire les risques s’incendie, utiliser seulement des conducteurs de télécommunications 26 AWG ou de section supérieure.
Some ports are suitable for connection to intra-building or non-exposed wiring or cabling only. In such cases, a notice will be given in the installation instructions.
Do not attempt to tamper with any carrier-provided equipment or connection hardware.
Electromagnetic Compatibility (EMC)
The equipment is designed and approved to comply with the electromagnetic regulations of major regulatory bodies. The following instructions may enhance the performance of the equipment and will provide better protection against excessive emission and better immunity against disturbances.
A good earth connection is essential. When installing the equipment in a rack, make sure to remove all traces of paint from the mounting points. Use suitable lock-washers and torque. If an external grounding lug is provided, connect it to the earth bus using braided wire as short as possible.
The equipment is designed to comply with EMC requirements when connecting it with unshielded twisted pair (UTP) cables. However, the use of shielded wires is always recommended, especially for high-rate data. In some cases, when unshielded wires are used, ferrite cores should be installed on certain cables. In such cases, special instructions are provided in the manual.
Disconnect all wires which are not in permanent use, such as cables used for one-time configuration.
The compliance of the equipment with the regulations for conducted emission on the data lines is dependent on the cable quality. The emission is tested for UTP with 80 dB longitudinal conversion loss (LCL).
Unless otherwise specified or described in the manual, TNV-1 and TNV-3 ports provide secondary protection against surges on the data lines. Primary protectors should be provided in the building installation.
The equipment is designed to provide adequate protection against electro-static discharge (ESD).
However, it is good working practice to use caution when connecting cables terminated with plastic connectors (without a grounded metal hood, such as flat cables) to sensitive data lines.
Before connecting such cables, discharge yourself by touching earth ground or wear an ESD preventive wrist strap.
FCC-15 User Information
This equipment has been tested and found to comply with the limits of the Class A digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the Installation and Operation manual, may cause harmful interference to the radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.
Canadian Emission Requirements
This Class A digital apparatus meets all the requirements of the Canadian Interference-Causing
Equipment Regulation.
Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.
Warning
Warning per EN 55022 (CISPR-22)
This is a class A product. In a domestic environment, this product may cause radio interference, in which case the user will be required to take adequate measures.
Avertissement Cet appareil est un appareil de Classe A. Dans un environnement résidentiel, cet appareil peut provoquer des brouillages radioélectriques. Dans ces cas, il peut être demandé à l’utilisateur de prendre les mesures appropriées.
Achtung Dieses ist ein Gerät der Funkstörgrenzwertklasse A. In Wohnbereichen können bei
Betrieb dieses Gerätes Rundfunkströrungen auftreten, in welchen Fällen der
Benutzer für entsprechende Gegenmaßnahmen verantwortlich ist.
Quick Start Guide
Installation of SPD-703-1 should be carried out only by an experienced technician. If you are familiar with SPD-703-1, use this quick start guide to set it up for operation.
This guide describes the standalone version of the converter. Perform the installation procedures for both the local and the remote units.
Instructions given below detail the settings that you have to make in order to configure SPD-703-1 for proper operation. The table, which comes after the configuration instruction lists the SPD-703-1 internal jumpers and their possible settings.
Configuring SPD-703-1
To configure SPD-703-1:
1. Disconnect all the cables connected to SPD-703-1.
2. Turn the unit over (bottom facing up).
3. Unscrew the four cover screws and keep them in a safe place.
4. Turn the unit over (bottom facing down).
5. Remove the SPD-703-1 top cover by pulling it straight up.
6. Set internal jumpers.
7. Close the SPD-703-1 cover by reversing the procedure described in steps 2-5.
Jumper Description
CHASS, JP1
Values
Controls the connection between the SPD-703-1 signal ground and the frame (chassis) ground
CONNECT – Signal ground is connected to the frame ground
DISCONNECT – Signal ground is disconnected from the frame ground
CONNECT
Note
Setting the CHASS jumper to DISCONNECT may render the equipment unsafe for connection to unprotected telecommunication networks in locations where permanent excessive voltage is present on the lines.
Quick Start Guide SPD-703-1 Installation and Operation Manual
Jumper Description
TC G.703, J9 Selects the transmit timing source
Jumper Description
BAUD RATE,
J1
CONNECT
TO, J10
Selects the DTE rate
Selects a type of the user unit connected to the DTE interface of SPD-703-1
V.54 DELAY,
J5
POLR, J2
Controls the V.54 delay to prevent multiple loopbacks in tail-end applications
Selects coding method for binary 1 on the receive line
POLX, J3
RDL, J6
Selects coding method for binary 1 on the transmit line
Controls remote digital loopback activation at the remote unit
Values
LBT – The TX pair timing is the recovered clock from the G.703 RX pair
EXT – The TX pair from the G.703 side and the transmit timing from the digital interface side are externally provided
INT – The TX pair and the transmit timing are from the internal source
LBT
Values
64K – 64 kbps
56K – 56 kbps
48K – 48 kbps
64K
DTE – Connection to DTE, with transmit and receive timing derived from the SPD-703-1 recovered clock
DCE – Connection to DCE, while both the
DCE and SPD-703-1 operate with external transmit timing
DCE21 – Connection to X.21 DCE. The
SPD-703-1 transmit and receive timing are derived from the
DCE
DTE (for test purposes)
ON – V.54 delay is enabled
OFF – V.54 delay is disabled
ON
“1” – Binary one is coded as 1100 and binary zero is coded as 1010
“0” – Binary one is coded as 1010 and binary zero is coded as 1100
“1” – Binary one is coded as 1100 and binary zero is coded as 1010
“0” – Binary one is coded as 1010 and binary zero is coded as 1100
“1”
“1”
EN – Remote digital loopback activation is enabled at the remote unit
DIS – Remote digital loopback activation is disabled at the remote unit
EN
SPD-703-1
SPD-703-1 Installation and Operation Manual Quick Start Guide
Connecting the Cables
Connecting the Line
To connect the line:
• Connect the line cable to the terminal block connector on the SPD-703-1 rear panel.
Connecting the DTE
To connect the DTE:
• Connect the DTE cable to the appropriate SPD-703-1 rear panel connector.
Quick Start Guide SPD-703-1 Installation and Operation Manual
Connecting to the Power
• Connect the power cable to the power connector on the rear panel.
The unit has no power switch. It starts operating when the power connector at the rear is connected to the mains.
SPD-703-1
SPD-703-1 Installation and Operation Manual Quick Start Guide
SPD-703-1 does not require operator attention once installed and configured.
Verifying Performance
When data is being transferred, observe that the following front panel LEDs light or blink:
Indicator Status
PWR ON
TD Blinking or OFF
RD Blinking or OFF
LOS OFF
ERR OFF
TEST OFF
Quick Start Guide SPD-703-1 Installation and Operation Manual
SPD-703-1
Contents
Chapter 1. Introduction
1.1
1.2
1.3
1.4
Chapter 2. Installation and Setup
2.1
2.2
2.3
Chapter 3. Operation
3.1
3.2
Chapter 4. Troubleshooting and Diagnostics
4.1
4.2
SPD-703-1 i
Table of Contents
Chapter 5. SPD-703-1/R Card
5.1
5.2
5.3
5.4
Installing SPD-703-1/R into the ASM-MN-214 Card Cage..........................................
Appendix A. Connector Wiring
Appendix B. IR-ETH Interface Module ii SPD-703-1
Chapter 1
Introduction
1.1 Overview
SPD-703-1 is an advanced rate and interface converter that converts the G.703 codirectional interface to several standard data communication interfaces.
Versions
SPD-703-1 is available in two versions:
• SPD-703-1 standalone unit
• SPD-703-1/R card, designed to fit RAD’s ASM-MN-214, 19-inch modem rack.
Application
shows a typical application in which SPD-703-1 acts as an interface and rate converter to connect data communications equipment to PCM transmission equipment.
DTE
V35
48 kbps
SPD-703-1
64 kbps
Channel
Bank or PCM
Equipment
PCM
Network
64 kbps
Channel
Bank or PCM
Equipment
SPD-703-1
Figure 1-1. Typical SPD-703-1 Application
V35
48 kbps
DTE
Features
SPD-703-1 has the following features:
• Conversion between G.703 codirectional interface and V.24, V.35, V.36
(RS-422), X.21, RS-530 interfaces, or a built-in Ethernet bridge (IR-ETH)
• Selectable data rates: 48, 56, 64 kbps
• Selectable transmit timing source
• Line protection circuits
• Meets G.823 jitter requirements
• V.54 diagnostic (loops 2 and 3)
• Internal test pattern generator
• ITU V.110 compatible (conversion from 56 to 64 kbps)
• Second asynchronous subchannel operating at up to 1.2 kbps.
SPD-703-1 Overview 1-1
Chapter 1 Introduction SPD-703-1 Installation and Operation Manual
shows a 3D view of the standalone SPD-703-1 unit.
Figure 1-2. SPD-703-1 3D View
The controls and indicators are on the front panel. For a description of the front panel, refer to
Front Panel Indicators and Switches in Chapter 3 .
The interface and power connectors are on the rear panel. For a description of
the rear panel, refer to Connecting the Interfaces in
SPD-703-1 converts the G.703 codirectional interface to standard data communication interfaces. SPD-703-1 can perform both interface and rate conversions, and also features diagnostic testing capabilities.
Main Principles of Operation
Interface Conversion
SPD-703-1 converts from the G.703 codirectional interface to the following interfaces: V.24, V.35, V.36/RS-422, X.21, RS-530 or built-in Ethernet bridge.
The composite timing/data signal conveys the 64 kHz bit-timing information, the
8 kHz octet information (by introducing violations into the signal) and the 64 kbps data pattern.
G.703 codirectional signals, in each transmission direction, are coded as follows:
• A binary one (64 kbps bit period) is coded as a block of the following four bits: 1 1 0 0
• A binary zero (64 kbps bit period) is coded as a block of the following four bits: 1 0 1 0.
The binary signal is converted into a three-level signal by alternating the polarity of the blocks. The alternation of the block polarity is violated every eight blocks as illustrated in
.
The bit stream from the DTE can be inverted, prior to the conversion to G.703.
The received binary signal to the DTE is inverted at the same time.
1-2 Functional Description SPD-703-1
SPD-703-1 Installation and Operation Manual
Bit No.
Chapter 1 Introduction
6 7 8 1 2 3 4 5 6 7 8 1
64 kbit/s data 0 0 0 1 1 0 1 0 1 1 1 0
Binary Data
Three-level Data
Violated Data
Figure 1-3. G.703 Code Conversion
Rate Conversion
Using SPD-703-1 as a rate converter, you can connect terminal equipment with a data rate of 48 or 56 kbps to a 64 kbps G.703 service interface line. At 48 or
56 kbps, the extra bandwidth can be used for one of several purposes
(user-selectable):
• To guarantee the “ones density” requirement, by insertion of a “1” after every 7 bits (for 56 kbps only)
• To pass a control signal end-to-end
• As a 1200 bps asynchronous secondary subchannel for connecting additional data terminal equipment over the same link.
Conversion from 64 to 56 kbps is performed by suppressing bit position number
8. This bit position coincides with the introduced violation (
) and thus
Chapter 1 Introduction SPD-703-1 Installation and Operation Manual conforms to the requirements of the ITU V.110 standard (56 to 64 kbps rate conversion).
The suppressed bit is optionally used for RTS-DCD end-to-end signaling (or async secondary channel). T1 (1.544 Mbps) applications require this bit position to be set to a binary “1”. This is achieved by leaving the RTS pin open (not connected) and selecting “MARK=1” (with the data polarity jumper). Conversion from 64 to
48 kbps is performed by suppressing bit position number 7 and bit position number 8. The suppressed bits are used as described above for 64 to 56 kbps conversion.
Asynchronous Subchannel
End-to-End Signaling
End-to-end signaling (local RTS to remote DCD) is sometimes not used with the high-speed data channel, in which case it can be used for a full-duplex transparent asynchronous subchannel.
Sampling
The subchannel is multi-sampled into the 64 kbps trunk. The sampling rate is at least 8 kHz. The bit rate can be up to 1200 bps, asynchronous. (There is no need to send the async parameters, start, stop, character length etc.)
Control Signals
No control signals are associated with this asynchronous subchannel.
Timing
The G.703 codirectional signal is made up of two balanced signals, each carrying timing and information:
• Receive signal
• Transmit signal.
The timing signal associated with each direction of transmission is in the same direction as the information signal as illustrated in
1-4 Functional Description SPD-703-1
SPD-703-1 Installation and Operation Manual
PCM
EQUIP.
SPD-703-1
Chapter 1 Introduction
DATA COMM. EQUIP.
ASYNCHRONOUS
TERMINAL
Information signal
Timing signal
Figure 1-4. G.703 Codirectional Signaling
The transmit clock is set to one of the following modes:
• Internal timing mode: uses the SPD-703-1 internal clock (used primarily for testing and diagnostic purposes)
• External timing mode: uses the external transmit clock on the data communications side
• G.703 receive timing mode: uses the recovered clock from the G.703 receive pair.
Each of these is illustrated in its own section below.
Internal Clock Timing Mode
The internal oscillator is usually used for testing purposes, to check the G.703 transmit timing, but it can be also be used with systems that do not have a clock source as illustrated in
.
PCM
EQUIPMENT
ELASTIC
BUFFER
OSCILLATOR
DATA
COMMUNICATIONS
EQUIPMENT
SPD 703-1
Information signal
Timing signal
Figure 1-5. Internal Clock Timing Mode
Chapter 1 Introduction SPD-703-1 Installation and Operation Manual
External Transmit Clock Timing Mode
When the external transmit clock on the data communications side is used for
G.703 transmit timing, the receive and transmit directions of transmission within
SPD-703-1 are totally independent as illustrated in
.
PCM
EQUIPMENT
ELASTIC
BUFFER
ELASTIC
BUFFER
SPD-703-1
DATA
COMMUNICATIONS
EQUIPMENT
Information signal
PCM
EQUIPMENT
Timing signal
Figure 1-6. External Transmit Clock Timing Mode
G.703 Receive Timing Mode
When G.703 receive timing is used for G.703 transmit timing, three timing options for the data communication side, associated with the loopback timing
(LBT) on the G.703 side, are available:
• Receive clock and transmit clock are both outputs from the SPD-703-1, serving as a DCE as illustrated in
ELASTIC
BUFFER
ELASTIC
BUFFER
48/56/64 kbps
DTE
DATA
TERMINAL
EQUIPMENT
SPD-703-1
Information signal
Timing signal
Figure 1-7. LBT-DTE Connection
• Receive Clock is the output from SPD-703-1, while Transmit Clock is the input to SPD-703-1 from an external DCE, for connection to a tail circuit as illustrated in
.
1-6 Functional Description SPD-703-1
SPD-703-1 Installation and Operation Manual
ELASTIC
BUFFER
ELASTIC
BUFFER
Chapter 1 Introduction
DATA
COMMUNICATIONS
EQUIPMENT
Cross cable
PCM
EQUIPMENT
Figure 1-8. LBT-DCE Connection
• Receive Clock and Transmit Clock are both inputs to SPD-703-1 (with X.21 interface only) serving as a DTE as illustrated in
. In order to operate error-free, both the PCM equipment clock and the DCE clock have to be synchronized.
ELASTIC
BUFFER
ELASTIC
BUFFER
SPD-703-1
DATA
COMMUNICATIONS
EQUIPMENT
Information signal
Timing signal
Figure 1-9. DCE21 Connection
Tail-End Clocking
Transmit clock from the external DTE source is provided for applications requiring modems in order to reach a remote DTE as illustrated in
. Use the LBT
- DCE timing mode with SPD-703-1 as illustrated in
.
Figure 1-10. Tail Circuit Application
Chapter 1 Introduction
Diagnostics
SPD-703-1 Installation and Operation Manual
V.54 Diagnostics
SPD-703-1 performs V.54 diagnostics, which includes remote digital loopback, local digital loopback and local analog loopback testing. The local digital loopback is activated manually from the front panel. The remote digital loopback and the local analog loopback can be activated manually from the front panel or via the
DTE interface.
V.52 Diagnostics
SPD-703-1 performs V.52 diagnostics, using a built-in BER tester to test the local and the remote units and the link between them. When you activate the PATT button on the front panel, the circuit sends and checks a pseudo-random proprietary pattern. The ERR LED flashes for each bit error detected. The test can be carried out in local analog loopback, in remote digital loopback or in normal point-to-point operation opposite a remote SPD-703-1.
G.703
Interface
Type
Line
Codirectional 64 kbps
4-wire, 19 to 26 AWG
Physical
Range
Impedance
Balance
Terminal block
Up to 800m (0.5 mile) over 24 AWG
120 Ω nominal
Better than 45 dB (up to 256 kHz)
Better than 35 dB (up to 384 kHz)
Return Loss Better than 20 dB (up to 256 kHz)
Better than 14 dB (up to 384 kHz)
Clock Frequency 64 kHz
Frequency Tracking ± 500 ppm
“Pulse” Amplitude 1.0V nominal
“Zero” Amplitude 0V ± 0.1V max
Jitter Performance According to G.823 requirements
Line Protection According to ITU K.21 requirements
1-8 Technical Specifications SPD-703-1
SPD-703-1 Installation and Operation Manual Chapter 1 Introduction
DTE Interface
Type
Data Rates
V.24, V.35, V.36, X.21, RS-530,
48, 56 or 64 kbps
Spare Bandwidth at
48 or 56 kbps
An additional asynchronous channel at 1.2 kbps
Transfer of RTS to DCD control signal, end-to-end
Fixed “1” to guarantee “1”s density over the T1 network
Physical Interface • V.24, 25 pin, D-type, female
• V.35, 34 pin, female
• X.21, 15 pin, D-type, female
• RS-530, 25 pin, D-type, female
• V.36, 37 pin, D-type, female via 30 cm adapter cable
• Ethernet, via UTP/RJ-45 connector or via BNC connector
G.703
Transmit
Timing
Loopback Derived from the G.703 receive pair:
• RC and TC from SPD-703-1 to a DTE
• RC from SPD-703-1 and TC from an external tail modem
• RC and TC from an external DCE to SPD-703-1
External Derived from the DTE clock
Diagnostics
Physical
Internal Supplied by internal oscillator
Local Digital
Loopback
(V.54 loop 1)
Remote Digital
Loopback
(V.54 loop 2)
Activated by a front panel switch (DIG)
Activated by a front panel switch (REM), or from the DTE interface (except for X.21 and Ethernet)
Analog Loopback
(V.54 loop 3)
Activated by a front panel switch (ANA), or from the DTE interface (except for X.21 and Ethernet)
Internal BER Tester Generating a 511-bit pseudo-random test pattern via a front panel switch (PATT)
SPD-703-1
Height
Width
4.4 cm / 1.7 in
21.5 cm / 8.5 in
Chapter 1 Introduction
Depth
Weight
SPD-703-1/R
Weight
Power Supply
AC/DC Source
DC Source
Environment
Temperature
Humidity
SPD-703-1 Installation and Operation Manual
24.0 cm / 9.6 in
1.4 kg / 3.1 lb.
Fits one slot of the ASM-MN-214 modem rack
360g / 0.8 lb
Wide range power supply:
100–240 VAC ( ± 10%), 50 or 60 Hz, 5W
Or
40–72 VDC, 5W
24 VDC (18 to 32 VDC), 5W
0–50 ° C / 32–122 ° F
Up to 90%, non-condensing
1-10 Technical Specifications SPD-703-1
Chapter 2
Installation and Setup
This chapter describes installation and setup procedures for the standalone
SPD-703-1 unit.
SPD-703-1 is delivered completely assembled. It is designed for tabletop or
19-inch rack installation. For instructions on installation of a single unit or two units in a 19-inch rack, refer to the rack mounting kit for 19-inch racks guide that comes with the RM kit.
After installing the unit, refer to Chapter 3 to assure normal operation.
In case a problem encountered, refer to Chapter 4 for test and diagnostic
instructions.
Warning
Internal settings, adjustment, maintenance, and repairs may be performed only by a skilled technician who is aware of the hazards involved.
Always observe standard safety precautions during installation, operation, and maintenance of this product.
2.1 Site Requirements and Prerequisites
AC/DC powered SPD-703-1 units should be installed within 1.5 m (5 feet) of an easily accessible grounded AC outlet capable of furnishing a supply voltage in the range of 100 to 240 VAC of 40-72 VDC.
DC powered SPD-703-1 units require a 24 VDC power source.
Allow at least 90 cm (36 in) of frontal clearance for operating and maintenance accessibility. Allow at least 10 cm (4 in) clearance at the rear of the unit for signal lines and interface cables.
The ambient operating temperature of SPD-703-1 is 0 to 50 ° C (32 to 122 ° F) at relative humidity of 90%, non-condensing.
SPD-703-1 Site Requirements and Prerequisites 2-1
Chapter 2 Installation and Setup SPD-703-1 Installation and Operation Manual
The SPD-703-1 package includes the following items:
• One SPD-703-1 or SPD-703-1/R unit
• Ethernet over SDH/SONET and Converters CD
• CBL-530/449 adapter cable for the SPD-703-1 units with V.36 interface
• Power connection accessories (depending on the power option ordered):
Power cord (VAC) and AC/DC plug (-48 VDC)
Terminal block kit (24 VDC)
• RM-17 rack mount kit (if ordered).
This section describes how to configure SPD-703-1 by setting the internal jumpers and switches as required for your application.
To install SPD-703-1:
1. Determine the required configuration of SPD-703-1 and set the internal jumpers accordingly.
2. Connect the DTE. Refer to
for additional information.
3. Connect the line. Refer to
for additional information.
4. If required, connect asynchronous subchannel. Refer to
for additional information.
5. Connect power to the unit. Refer to
for additional information.
Warning
Access to the inside of the equipment is permitted only to the authorized and qualified personnel.
To avoid accidental electric shock, always disconnect the interface cables and the power cord before removing the unit from its casing.
Line voltages are present inside SPD-703-1 when it is connected to power and/or the lines. Moreover, under certain fault conditions, dangerous voltages may appear on the lines connected to the unit.
Any adjustment, maintenance and repair of the opened instrument under voltage must be avoided as much as possible and, when inevitable, should be carried out only by a skilled technician who is aware of the hazard involved. Capacitors inside the unit may still be charged even after the unit has been disconnected from its source of power.
2-2 Installing SPD-703-1
SPD-703-1 Installation and Operation Manual Chapter 2 Installation and Setup
Caution
SPD-703-1 contains components sensitive to electrostatic discharge (ESD). To prevent ESD damage, avoid touching the internal components. Before moving jumpers, touch the SPD-703-1 rear panel.
Configuring SPD-703-1
illustrates the layout of the SPD-703-1 printed-circuit board.
provides details on the functions of the internal jumpers and their default settings.
To configure SPD-703-1:
1. Disconnect all the cables connected to SPD-703-1.
2. Turn the unit over (bottom facing up).
3. Unscrew the four cover screws and keep them in a safe place.
4. Turn the unit over (bottom facing down).
5. Remove the SPD-703-1 top cover by pulling it straight up.
6. Set internal jumpers.
7. Close the SPD-703-1 cover by reversing the procedure described in steps 2-5.
64K
56K
48K
BAUD RATE
“1”
“0”
POLX
“1”
POLR “0”
V.54 DLY
OFF
ON
TC G.703
INT
EXT
LBT
CONNECT TO:
DTE
DCE
DCE21
RDL
DIS
EN
DISCONN
CONNECT
Figure 2-1. SPD-703-1 PCB Layout
SPD-703-1 Installing SPD-703-1 2-3
Chapter 2 Installation and Setup SPD-703-1 Installation and Operation Manual
Jumper Description
Table 2-1. SPD-703-1 Internal Jumpers
Values
CHASS, JP1
Controls the connection between the SPD-703-1 signal ground and the frame (chassis) ground
CONNECT – Signal ground is connected to the frame ground
DISCONNECT – Signal ground is disconnected from the frame ground
CONNECT
Note : Setting the CHASS jumper to DISCONNECT can make the equipment unsafe for connection to unprotected telecommunication networks in certain places where permanent excessive voltages are present on the lines.
TC G.703, J9 Selects the transmit timing source
BAUD RATE,
J1
Selects the DTE rate
LBT – The TX pair timing is the recovered clock from the G.703 RX pair
EXT – The TX pair from the G.703 side and the transmit timing from the digital interface side are externally provided
INT – The TX pair and the transmit timing are from the internal source
LBT
64K – 64 kbps
56K – 56 kbps
48K – 48 kbps
64K
2-4 Installing SPD-703-1
SPD-703-1 Installation and Operation Manual Chapter 2 Installation and Setup
Table 2-1. SPD-703-1 Internal Jumpers (Cont.)
Jumper Description Values
CONNECT
TO, J10
Selects a type of the user unit connected to the DTE interface of SPD-703-1
V.54 DELAY,
J5
POLR, J2
Controls the V.54 delay to prevent multiple loopbacks in tail-end applications
Selects coding method for binary 1 on the receive line
DTE – Connection to DTE, with transmit and receive timing derived from the SPD-703-1 recovered clock
DCE – Connection to DCE, while both the
DCE and SPD-703-1 operate with external transmit timing
DCE21 – Connection to X.21 DCE. The
SPD-703-1 transmit and receive timing are derived from the
DCE
DTE (for test purposes)
ON – V.54 delay is enabled
OFF – V.54 delay is disabled
ON
POLX, J3
RDL, J6
Selects coding method for binary 1 on the transmit line
Controls remote digital loopback activation at the remote unit
“1” – Binary one is coded as 1100 and binary zero is coded as 1010
“0” – Binary one is coded as 1010 and binary zero is coded as 1100
“1” – Binary one is coded as 1100 and binary zero is coded as 1010
“0” – Binary one is coded as 1010 and binary zero is coded as 1100
“1”
“1”
EN – Remote digital loopback activation is enabled at the remote unit
DIS – Remote digital loopback activation is disabled at the remote unit
EN
SPD-703-1 Installing SPD-703-1 2-5
Chapter 2 Installation and Setup SPD-703-1 Installation and Operation Manual
Connecting the Interfaces
illustrates the AC-powered SPD-703-1 unit rear panel.
DTE
XMT RCV GND
Figure 2-2. SPD-703-1 Rear Panel, AC Version
Connecting the Line Interface
The terminal block provides four connecting points to the transmit and receive twisted pair lines and a fifth one for ground connection. The transmit and receive pairs are polarity insensitive.
To connect the line interface:
1. Connect the transmit pair to the terminals marked XMT (data output of
SPD-703-1).
2. Connect the receive pair to the terminals marked RCV (data input to
SPD-703-1).
Warning
Do not touch bare line wires.
2-6 Installing SPD-703-1
SPD-703-1 Installation and Operation Manual
To insert the wires:
1. Insert the screwdriver into a square hole.
Chapter 2 Installation and Setup
Figure 2-3. Connecting the Terminal Block – Step 1
2. Raise the inserted screwdriver, putting pressure on the ramp within the square hole.
Figure 2-4. Connecting the Terminal Block – Step 2
3. Insert the stripped end of the wire and remove the screwdriver.
Figure 2-5. Connecting the Terminal Block – Step 3
SPD-703-1 Installing SPD-703-1 2-7
Chapter 2 Installation and Setup SPD-703-1 Installation and Operation Manual
Connecting the DTE Interface
The rear-panel DTE connector provides interface for data input/output and clock reference between SPD-703-1 and the DTE. RAD offers interface cables for the
DTE connection, refer to
for the DTE interface connector description.
Table 2-2. DTE Interfaces and Matching Connector Cables
DTE Interface Description RAD Cable
V.24 (RS-232)
25-pin, D-type, female. Refer to Appendix A for the connector
pinout.
V.35
CBL-HBT/V24
34-pin, female. Refer to Appendix A for the connector pinout.
CBL-HBT/V35
Table 2-2. DTE Interfaces and Matching Connector Cables (Cont.)
DTE Interface Description
RS-530
25-pin, D-type. Refer to Appendix A for the connector pinout.
V.36
X.21
IR-ETH
Via adapter cable converting between RS-530 connector and 37-pin,
D-type, female connector. Refer to Appendix A for the cable pinout.
15-pin, D-type, female. Refer to Appendix A for the connector
pinout.
RJ-45 or BNC. Refer to Appendix B for the module description.
RAD Cable
CBL-HBT/RS-530
CBL-530/449
CBL-HBT/X21
2-8 Installing SPD-703-1
SPD-703-1 Installation and Operation Manual Chapter 2 Installation and Setup
Note
Connecting an Asynchronous Subchannel
To connect an asynchronous subchannel, use a special split cable (
). The cable connects the primary and the secondary channels via the DTE connector.
The asynchronous subchannel can operate only when the primary channel is run at 48 or 56 kbps on clear channel, and when there are SPD-703-1 units at both local and remote ends.
SPD-703-1
Connector
DTE
Connector
TD TD
RD RD
TC TC
RC RC
DCD
RTS
CTS
SG
PG
DSR
DCD
RTS
CTS
SG
PG
DSR
N.C.
Async
XMT. Data
Async
RCV. Data
7 SG
1 PG
6 DSR
8 DCD
3 RD
2 TD
4 RTS
5 CTS
Async Terminal Connector
Figure 2-6. Connecting an Asynchronous Subchannel to SPD-703-1
Note
• Signal ground and protective ground are used for the high speed synchronous channel as well as for the asynchronous channel.
• The DCD and RTS pins are used only to receive and transmit data for the asynchronous channel. They cannot be used as control signals with the high speed synchronous channel.
SPD-703-1 Installing SPD-703-1 2-9
Chapter 2 Installation and Setup SPD-703-1 Installation and Operation Manual
Connecting to Power
The wide-range AC/DC power supply inside SPD-703-1 accepts current from both
AC and DC sources. From an AC source, the power supply can receive any voltage in the range of 100 to 240 VAC. From a DC source, the 48 VDC power supply can receive any voltage in the range of 40 to 72 VDC.
When connecting the DC power, the PWR pin must be connected to the ungrounded line of the central battery (either − or + ). The RTN pin must be connected to the grounded line of the central battery. The GND pin must be connected to the protected earth of the building installation.
Warning
Before powering this unit, the protective earth terminals of the instrument must be connected to the protective ground conductor of the power cord. The power plug may only be inserted in a power outlet provided with a protective earth contact. The protective action must not be negated by the use of an extension cord (power cable) without a protective conductor (grounding).
Whenever it is likely that the protection offered by the internal fuses has been impaired, the instrument must be made inoperative and be secured against any unintended operation.
Connecting to AC/DC Power
SPD-703-1 is supplied with a Wide Range AC/DC power supply. This unit is equipped with a standard AC-type 3-prong power input connector located on the unit rear panel. This power input connector can be used for both AC and DC voltage inputs. AC or DC power should be supplied to SPD-703-1 through the 5feet (1.5m) standard power cable terminated by a standard 3-prong plug.
To connect SPD-703-1 to AC power:
1. Connect the power cable to the connector on the SPD-703-1 rear panel.
2. Connect the power cable to the electricity outlet.
To connect SPD-703-1 to 48 VDC power:
• Refer to the AC/DC connection supplement at the end of this manual.
Connecting to DC Power
Caution
To connect SPD-703-1 to 24V DC power:
• Refer to the DC connection terminal block connector supplement at the end of this manual.
The DC installation procedure must be performed by a qualified technician.
2-10 Installing SPD-703-1
Chapter 3
Operation
This chapter provides the following information for the standalone SPD-703-1:
• SPD-703-1 front-panel indicators and controls
• Operating procedures (turn-on, front-panel indications, performance monitoring and turn-off).
Installation procedures provided in
Chapter 2 must be completed and checked
before attempting to operate SPD-703-1.
3.1 Front Panel Indicators and Switches
shows the SPD-703-1 standalone unit front panel. The front panel is equipped with push button controls and LED indicators.
lists the functions of the controls and indicators.
DIG ANA REM PATT
PWR TD RD LOS TEST ERR
Figure 3-1. SPD-703-1 Front Panel
Table 3-1. SPD-703-1 Front Panel Controls and Indicators
Name Type Function
PWR
TD
RD
LOS
TEST
ERR
DIG
Green LED ON – Power is on
Yellow LED ON – Steady SPACE is being transmitted
Blinks – Data is transmitted
Yellow LED ON – Steady SPACE is being received
Blinks – Data is received
Red LED
Red LED
ON – RX pair does not contain the violations required
ON – SPD-703-1 is in any of the three loopback modes, or the
PATT pushbutton is pressed
Yellow LED ON or blinks – Errors are present in the test pattern.
Pushbutton The digital loopback pushbutton causes the local SPD-703-1 to
loop received data to its transmitter ( Figure 4-3 ).
Note
If the LOS LED is ON, verify that the line is connected properly.
SPD-703-1 Front Panel Indicators and Switches 3-1
Chapter 3 Operation SPD-703-1 Installation and Operation Manual
Table 3-1. SPD-703-1 Front Panel Controls and Indicators (Cont.)
Name Type Function
ANA Pushbutton The local loopback (V.54 loop 3) pushbutton causes the local SPD-
703-1 to loop its transmitter output back to its receiver
( Figure 4-1 ). This loopback may also be activated from the DTE
(excluding X.21 and Ethernet interfaces).
REM
PATT
Pushbutton The remote digital loopback (V.54 Loop 2) pushbutton causes the remote SPD-703-1 to loop received data to its transmitter
( Figure 4-2 ). This loopback may be also activated from the DTE
(excluding X.21 and Ethernet interfaces).
Pushbutton The PATT switch causes SPD-703-1 to send and receive a test pattern. If errors are encountered, the ERR indicator lights up.
Turning On SPD-703-1
SPD-703-1 is turned on as soon as power is connected. When power is connected, the PWR indicator lights up and remains lit as long as SPD-703-1 receives power.
SPD-703-1 requires no operator attention once installed, with the exception of occasional monitoring of front panel indicators. Intervention is only required when the converter must be configured to new operational requirements, or the diagnostic tests must be performed.
Normal Indications
shows the correct status of the SPD-703-1 indicators after the local and remote modems are synchronized and data is being transferred.
Table 3-2. SPD-703-1 Indicator Status
Indicator Status
PWR ON
TD Blinking or OFF
RD Blinking or OFF
LOS OFF
ERR OFF
TEST OFF
If the LEDs do not reflect the above status, ensure that:
• The units are synchronized.
• The four front-panel pushbuttons are in the OFF position.
3-2 Operating SPD-703-1
SPD-703-1 Installation and Operation Manual Chapter 3 Operation
Turning Off SPD-703-1
To turn off the unit, remove the power cord from the power source.
Chapter 3 Operation SPD-703-1 Installation and Operation Manual
3-4 Operating SPD-703-1
SPD-703-1
Chapter 4
Troubleshooting and
Diagnostics
This chapter describes how to perform diagnostics tests on SPD-703-1.
Diagnostic tests on SPD-703-1 consist of the following:
• Check that the system is operating normally
• Isolate faulty equipment or cables
• Identify other sources of system malfunction.
The tests are activated by control pushbuttons on the SPD-703-1 front panel and monitored via LED indicators. For description of SPD-703-1 controls and
indicators and their functionality, refer to Chapter 3 .
SPD-703-1 supports several types of loopback tests for evaluating the operation of the data system equipment and its line circuits. Using these loopbacks, you can test communication between the attached equipment, internal circuitry of the local and remote modems.
Loopback test are best performed in the following order:
1. Local analog loopback
2. Remote digital loopback
3. Local digital loopback.
Before testing the operation of the data system equipment and line circuits, ensure that all the units are powered up and configured properly.
V.54 Loopbacks 4-1
Chapter 4 Troubleshooting and Diagnostics SPD-703-1 Installation and Operation Manual
Local Analog Loopback (LLB)
The local analog loopback (LLB) test checks the performance of the local
SPD-703-1, the local DTE, and the connections between them (
).
Perform the test separately at the local and the remote site.
ANA
Pressed
Data
Clock Transmit
DTE
Line
Interface
Clock
Data Receive
SPD-703-1
Figure 4-1. Local Analog Loopback
Note
To run the local analog loopback:
1. Press the ANA pushbutton.
The TEST LED on the SPD-703-1 front panel lights up. The unit's transmit output is now connected to its own receiver.
2. Execute the local analog loopback with one of the following methods:
Using the DTE configured to the half duplex operation and checking the echoed data stream.
Using an external BER tester.
If the BER test indicates an error-free data stream, but the DTE test indicates a fault, verify that the cable between the DTE and SPD-703-1 is properly connected. If the problem persists, follow the DTE manufacturer's test procedures.
3. To isolate a communication line problem, perform the LLB loopback at the opposite end. If both LLB tests are error-free, the fault is probably in the communication line or in the line interfaces.
4. After completing the test or correcting the fault, press ANA pushbutton again to restore it to the Off position.
You can also activate the local analog loopback via the appropriate pin of the DTE interface. The loopback activation via the DTE pins is not available for the X.21 and Ethernet interfaces.
4-2 V.54 SPD-703-1
SPD-703-1 Installation and Operation Manual Chapter 4 Troubleshooting and Diagnostics
Remote Digital Loopback (RLB)
The Remote Digital Loopback (RLB) test checks the performance of the local and the remote SPD-703-1 units and their connecting lines. The Remote Digital
Loopback sets a loop at the remote SPD-703-1 unit from the terminal coupled to the local unit (
).
REM
Pressed
Data
Clock
Transmit Receive
Local
DTE
Link
Interface
Link
Interface
Remote
DTE
Clock
Data
Receive Transmit
Local SPD-703-1 Remote SPD-703-1
Figure 4-2. Remote Digital Loopback
Note
To run remote digital loopback:
1. Press the REM pushbutton on the local SPD-703-1 front panel.
The TEST LED on each SPD-703-1 front panel lights up. The receive output of the remote modem is looped back to the receiver.
2. Perform the BERT test as explained above for the local analog loopback test.
If an error occurs, while the local analog loopback test described above, was successful for both the local and remote modems, the line or the line circuits of the local or the remote unit are not operating properly.
3. After completing the test or correcting the fault, press REM pushbutton again to restore it to the Off position.
• You can also activate the remote digital loopback via the appropriate pin of the DTE interface. The loopback activation via the DTE pins is not available for the X.21 and Ethernet interfaces.
• If the REM pushbutton is pressed, verify that the unit is set to the INT or EXT mode of operation (J9).
SPD-703-1 V.54 Loopbacks 4-3
Chapter 4 Troubleshooting and Diagnostics SPD-703-1 Installation and Operation Manual
Local Digital Loopback (DIG)
The local digital loopback (DIG) test allows the operator at the remote end to check the performance of the local and remote SPD-703-1 units, and their connecting lines. The DIG test loops the received data back to the remote
SPD-703-1 (
). The local digital loopback test is equivalent to activating the remote loopback from the remote SPD-703-1.
DIG
Pressed
Transmit Receive
Data
Clock
Local
DTE
Link
Interface
Link
Interface
Remote
DTE
Note
Receive Transmit
Data
Clock
Local SPD-703-1 Remote SPD-703-1
Figure 4-3. Local Digital Loopback
To activate the local digital loopback:
• Press the DIG pushbutton on the local SPD-703-1 front panel.
The TEST LED lights up.
If the DIG pushbutton is pressed, verify that the unit is set to the LBT mode of operation and the other unit is set to the INT or EXT mode of operation (J9).
4.2 Internal BERT Circuit Operation
SPD-703-1 has a built-in BERT circuit consisting of a pattern generator and a pattern tester. This circuit acts in conjunction with the V.54 diagnostic loops and a remote BERT to verify Normal system operation and isolate faulty equipment in the event of system failure. The pattern transmitted is a RAD proprietary, pseudo-random pattern.
The SPD-703-1 built-in BERT circuit can be used for the following tests:
• SPD-703-1 Self-Test: the pattern transmitted by the BERT is looped back to the BERT for comparison.
• Two-BERT Test: the pattern transmitted by the BERT is received by another
SPD-703-1 unit.
Each of these tests is described in its own section below. When used opposite another SPD-703-1, the complete link is tested.
4-4 Internal BERT Circuit Operation SPD-703-1
SPD-703-1 Installation and Operation Manual Chapter 4 Troubleshooting and Diagnostics
Running Self-Test
The SPD-703-1 Self-Test verifies that the converter is operating properly
(
).
To perform the test:
1. Set the TC G.703 jumper (J9) to INT ( Figure 2-1 and Table 2-1 ).
2. Set the CONNECT TO jumper (J10) to DTE ( Figure 2-1 and Table 2-1 ).
3. Press the ANA button on the SPD-703-1 front panel; wait for the TEST LED to light.
4. Press the PATT button; verify that:
The TEST LED is still lit
The ERR LED is off (it might light up momentarily, which is normal).
If the ERR LED lights up or blinks, then the SPD-703-1 communication system is faulty. If the test executes correctly, restore all buttons to the OFF positions.
PATT
Pressed
ANA
Pressed
Pattern
Generator
Transmitter
Pattern
Tester
SPD-703-1
Figure 4-4. Self-Test
Receiver
SPD-703-1 Internal BERT Circuit Operation 4-5
Chapter 4 Troubleshooting and Diagnostics SPD-703-1 Installation and Operation Manual
Running Two-BER Test
The Two-BER test checks the link between the units (
).
To perform the test:
• Press the PATT button on both devices.
The ERR LED lights up momentarily and then goes off. If errors are encountered, the ERR LED lights up continuously (for continuous errors) or blinks (for intermittent errors).
PATT
Pressed
(Disconnects External BERT)
PATT
Pressed
(Disconnects External BERT)
Data Flow
Pattern
Generator
Pattern
Tester
Line
Interface
Line
Interface
Pattern
Tester
SPD-703-1
Figure 4-5. Two-BER Test
Pattern
Generator
SPD-703-1
4-6 Internal BERT Circuit Operation SPD-703-1
Chapter 5
SPD-703-1/R Card
This chapter describes the SPD-703-1/R card, designed for installation in the
ASM-MN-214 card cage. The chapter contains the following sections:
• ASM-MN-214 card cage
• ASM-MN-214 power supply
• SPD-703-1/R front panel
• Installing the SPD-703-1/R card.
5.1 ASM-MN-214 Card Cage
The ASM-MN-214 card cage contains one or two power supplies and up to
14 plug-in cards. The card types can be SPD-703-1/R or other RAD rack version modems/converters – any combination of up to 14 plug-in cards.
For each of the 14 cards, the rear panel (
) contains a male connector for the terminal block and a DB-25 connector. A protection cover protects the terminal block connectors.
Line Connector
The terminal block (
) is to be attached to the rear panel terminal block connectors. It contains screws for connecting the transmit and receive pairs and ground, if present.
The ASM-MN-214 card cage is also available with BNC coaxial unbalanced or RJ-45 balanced line connectors.
DB-25 DTE Connector
The 25-pin D-type female interface connector provides all interface signals for the digital interfaces. Modems with X.21 or V.35 interface require an external mechanical adapter. Two optional interface attachments, CIA/X21/1 and
CIA/V.35/1, can be ordered separately from RAD. CIA/X.21/1 converts one DB-25 connector to an X.21 15-pin connector. CIA/V.35/1 converts one DB-25 connector to a V.35 34-pin connector.
V.36 cards are supplied with a RAD adapter cable CBL 530/449F, which converts between the DB-25 connector and a V.36 37-pin connector.
SPD-703-1/R with IR-ETH interface module uses a CIA/ETH interface adapter, which converts one DB-25 connector to an RJ-45 connector.
SPD-703-1 ASM-MN-214 Card Cage 5-1
Chapter 5 SPD-703-1/R Card
Terminal
Block
SPD-703-1 Installation and Operation Manual
Protection
Cover
CIA/V.35/1
CIA/X.21/1
CIA/ETH
CBL-530/449
Figure 5-1. ASM-MN-214 Rear Panel
5-2 ASM-MN-214 Card Cage SPD-703-1
SPD-703-1 Installation and Operation Manual Chapter 5 SPD-703-1/R Card
5.2 ASM-MN-214 Power Supply
Power is supplied to the SPD-703-1/R card from the ASM-MN-214 power supply via the chassis.
The ASM-MN-214 card cage can accept both AC or DC power supplies. LED indicators located on the ASM-MN-214 front panel (
) indicate activity when the power supply is connected to the mains plug. The power supply supports the full card cage with any combination of cards.
AC Supply
The AC power supply of the ASM-MN-214 is 100, 115, or 230 VAC, ± 10%,
47 to 63 Hz.
DC Supply
The DC power supply is -48 VDC (-36 to -72 VDC) or 24 VDC (18 to 32 VDC). It uses a DC/DC converter module to provide the power required for the cards.
Power Supply with Redundancy
This special ordering option is equipped with two separate power supplies, operating together and sharing the load of the whole card cage. If either of the power supplies fails, the other one will continue to supply power to the full card cage.
Two LED indicators show activity of each power supply. They should both light when mains power is provided.
Note
It is possible to combine AC and DC power supplies in the same cage.
SPD-703-1 ASM-MN-214 Power Supply 5-3
Chapter 5 SPD-703-1/R Card SPD-703-1 Installation and Operation Manual
5.3 SPD-703-1/R Front Panel
shows the SPD-703-1/R card front panel. The LEDs and pushbuttons of the card version are identical in their functionality to those of the standalone
device. For additional information, refer to Front Panel Indicators and Switches in
PWR
TD
RD
LOS
TEST
ERR
DIG
ANA
REM
PATT
SPD-703-1
Figure 5-2. SPD-703-1/R Front Panel
5-4 SPD-703-1/R Front Panel SPD-703-1
SPD-703-1 Installation and Operation Manual Chapter 5 SPD-703-1/R Card
Figure 5-3. ASM-MN-214 Front Panel
SPD-703-1 SPD-703-1/R Front Panel 5-5
Chapter 5 SPD-703-1/R Card SPD-703-1 Installation and Operation Manual
5.4 Installing the SPD-703-1/R Card
Setting Internal Jumpers and Switches
The SPD-703-1/R internal jumpers and switches are similar in their functionality to those of the standalone unit. For the details on the internal settings, refer to
Installing SPD-703-1/R into the ASM-MN-214 Card Cage
To install the SPD-703-1/R card in the ASM-MN-214 card cage:
1. Install the ASM-MN-214 card cage in a 19-inch rack.
2. Insert the SPD-703-1/R card into one of the ASM-MN-214 slots.
3. Push the card into the cage until it is fully inserted into the edge connector inside the rack.
4. Tighten the screws on front panel of the card.
Connecting the Interfaces
SPD-703-1/R uses the ASM-MN-214 rear panel terminal block ports for the line connections. The 25-pin D-type female connector serves as a DTE port.
1. Remove the protection cover from the terminal block connectors.
2. Connect the terminal block to the ASM-MN-214 terminal block connector.
3. Connect the line to the terminal block as follows:
Connect the transmit pair to the terminals marked XMT
Connect the receive pair to the terminals marked RCV
Connect the fifth screw to ground (optional).
4. If required, attach the appropriate CIA (CIA/X.21/1, CIA/V.35/1, CIA/ETH) or
V.36 adapter cable to the DB-25 connector on the card cage rear panel.
5. Connect the DTE cable to the DB-25 connector, other side of CIA, or adapter cable (depending on your version of the card interface).
6. Connect power to the ASM-MN-214 card cage:
To connect AC power, connect the power cable to the mains supply.
To connect DC power, refer to DC power supply connection supplement of the ASM-MN-214 installation and operation manual.
Warning
The ASM MN 214 card cage has no power switch. Operation starts when the power is applied to the rear panel POWER connector. When applying power, first connect the plug of the power cord to the ASM MN 214 POWER connector and then to the mains power source (outlet).
5-6 Installing the SPD-703-1/R Card SPD-703-1
Appendix A
Connector Wiring
A.1 V.24, V.35 and X.21 Interface Connectors
describes the signal assignments for the SPD-703-1 V.24, V.35 and
X.21 DTE interface connectors.
Signal
Function
Protective
Ground
Signal
Ground
Transmitted
Data
Received
Data
Request to
Send
Clear to Send
V.24
DB-25
Standalone and Card
Cage
1
DB-25
Card
Cage
V.35
34-Pin
Standalone
Pin Circuit
7 7 B Signal 102
GND
2 9
11
P TD(A) 103
S TD(B) 103
4
5
1
4
5
Table A-1. DTE Interface Signal Assignments
A Frame 101
3 12
13
R RD(A) 104
T RD(B) 104
C RTS 105
D CTS 106
DB-25
Card
Cage
X.21
DB-15
Standalone
Pin Circuit
(Function)
Description
1
2
14
1 ----
(Shield)
Chassis Ground. It may be isolated from Signal
Ground.
7 8 ----
(GND)
Common signal and DC power supply ground.
2 T(A)
9 T(B)
(Transmit)
Serial digital data from
DTE. In sync applications, the data translations must occur on the rising edge of the transmit clock.
3
16
4
19
4 R(A)
11 R(B)
(Receive)
Serial output from the modem receiver. In sync applications, the data translations occur on the rising edge of the clock.
3 C(A)
10 C(B)
(Control)
A positive level to
SPD-703-1 when data transmission is desired.
A positive level from
SPD-703-1 with delay, after receipt of Request to
Send, and when
SPD-703-1 is ready to transmit.
SPD-703-1 V.24, V.35 and X.21 Interface Connectors A-1
Appendix A Connector Wiring
Signal
Function
Data Set
Ready
SPD-703-1 Installation and Operation Manual
V.24
DB-25
Standalone and Card
Cage
6
20
Table A-1. DTE Interface Signal Assignments (Cont.)
DB-25
Card
Cage
6
20
V.35
34-Pin
Standalone
Pin Circuit
E DSR 107
DB-25
Card
Cage
X.21
DB-15
Standalone
Pin Circuit
(Function)
H DTR 108
Description
A positive level from
SPD-703-1 when power is on, and SPD-703-1 is (a) not in digital loopback mode, or (b) has not received a remote loopback signal from the remote unit.
Not used Data
Terminal
Ready
Carrier
Detect
8 8 F DCD 109 8
10
External
Transmit
Clock
Transmit
Clock
Receive
Clock
Local Analog
Loop
Remote
Digital Loop
Test
Indicator
24 19
16
U SCTE(A) 113
W SCTE(B) 113
24
11
15 14
10
Y SCT(A) 114 a SCT(B) 114
15
12
17 23
22
V SCR(A) 115
X SCR(B) 115
18
21
25
18
21
25
L and j
N and h n and k
5 I(A)
12 I(B)
(Indication)
A positive level from
SPD-703-1, except when a loss of the received signal is detected or when Data Set
Ready is negative.
7 (A)*
14 (B)*
Positive clock translations must correspond to data transmissions.
6 S(A)
13 S(B)
(Signal
Timing)
A transmit data rate clock for use by an external data source. Positive clock translations correspond to data translations.
A receive data rate clock output used by an external data sink. Positive clock translations correspond to data translations.
A control signal input, which, when on, sets
SPD-703-1 into local analog loopback (V.54
Loop 3).
A control signal input which, when on, commands SPD-703-1 to send a remote loopback command (V.54 Loop 2) to the remote SPD-703-1.
A Control Signal output from SPD-703-1; positive during any test mode.
A-2 V.24, V.35 and X.21 Interface Connectors SPD-703-1
SPD-703-1 Installation and Operation Manual Appendix A Connector Wiring
Signal Function
Protective Ground
A.2 RS-530 and V.36 Interface Connectors
The SPD-703-1 V.36 interface is provided via an adapter cable converting between 25-pin RS-530 connector and 37-pin V.36 connector.
lists the cable wiring.
Table A-2. Cable Converting between RS-530 and V.36 Interfaces, Pin Assignment
Pin
1
V.36, 37-Pin
Circuit
Shield
Pin
1
RS-530, 25-pin
Circuit
DTE Common Return
DCE Common Return
Transmitted Data
Received Data
Request to Send
Clear to Send
Data Set Ready
Data Terminal Ready
Carrier Detect 13
31
External Transmit Clock 17
35
Transmit Clock 5
23
9
27
11
29
12
30
37
20
4
22
6
24
7
25
Receive Clock 8
26
Local Analog Loopback 10
Remote Loopback
Test Indicator
14
18
CS (A)
CS (B)
DM (A)
DM (B)
TR (A)
TR (B)
RR (A)
RR (B)
TT (A)
TT (B)
SC
RC
SD (A)
SD (B)
RD (A)
RD (B)
RS (A)
RS (B)
ST (A)
ST (B)
RT (A)
RT (B)
LL
RL
TM
8
10
24
11
5
13
6
22
20
23
2
14
3
16
4
19
15
12
17
9
18
21
25
CB (A)
CB (B)
CC (A)
CC (B)
CD (A)
CD (B)
CF (A)
CF (B)
DA (A)
DA (B)
BA (A)
BA (B)
BB (A)
BB (B)
CA (A)
CA (B)
DB (A)
DB (B)
DD (A)
DD (B)
LL
RL
TM
SPD-703-1 RS-530 and V.36 Interface Connectors A-3
Appendix A Connector Wiring SPD-703-1 Installation and Operation Manual
A.3 SPD-703-1/R with Ethernet Interface, DTE
Connection
SPD-703-1/R with the IR-ETH Ethernet interface module uses a CIA/ETH interface adapter, which converts one DB-25 connector to an RJ-45 connector. If you intend to prepare a DB-25/RJ-45 adapter cable yourself, refer to
and
for the pin designations and their assignment.
7
9
11
12
13
Figure A-1. Pin Designation in the DB-25 Connector of ASM-MN-214 Card Cage
Table A-3. DB-25 and RJ-45 Pinout, Ethernet
Pin
RJ-45 DB-25
Function
– 7 GND
A-4 SPD-703-1/R with Ethernet Interface, DTE Connection SPD-703-1
Appendix B
IR-ETH Interface Module
IR-ETH is an interface module for RAD modems and converters. IR-ETH is used for converting the Ethernet (10BaseT or 10Base2) electrical levels to the modem/converter TTL levels. It also converts the Ethernet protocol to HDLC to enable long distance transmission and avoid the Ethernet collision limitation.
IR-ETH includes an internal, self-learning Ethernet bridge, which enables a high performance link between two Ethernet segments at a low transmission rate. The low-speed HDLC transmission is sent over the link using the modem modulation technique, and then converted back to an Ethernet signal at the remote modem.
shows a typical application using an Ethernet interface bridge. Each modem/converter is connected to an Ethernet network via the Ethernet interface bridge.
SPD-703-1 SPD-703-1
Figure B-1. Typical Application of SPD-703-1 with IR-ETH Interface Module
B.1 IR-ETH Connector Options
and
show the rear panel of the standalone SPD-703-1 with the IR-ETH interface module (RJ-45 and BNC connectors).
lists the RJ-45 connector pinout. Appendix A describes the pinout of the DB-25 connector serving for the LAN connection of the SPD-703-1/R card.
LINK
COLL
DTE
RX
TX
10BASE-T
XMT RCV GND
Figure B-2. Rear Panel of SPD-703-1 with IR-ETH Module (RJ-45 Connector)
SPD-703-1 IR-ETH Connector Options B-1
Appendix B IR-ETH Interface Module SPD-703-1 Installation and Operation Manual
COLL
DTE
RX
TX
10BASE-2
XMT RCV GND
Figure B-3. Rear Panel of SPD-703-1 with IR-ETH Module (BNC Connector)
Table B-1. RJ-45 Connector Pinout
Pin Function
– GND
General
LAN
WAN
LAN Table
Filtering and Forwarding
Buffer
Delay
Standard
Data Rate
Connectors
Protocol
Data Rate
10,000 addresses
15,000 pps
256 frames
1 frame
Conforms to IEEE 802.3/Ethernet
10 Mbps (20 Mbps 10BaseT FDX)
• 10BaseT (UTP): Shielded RJ-45
• 10Base2: BNC connector
HDLC
According to the modem transmission rate
B-2 Technical SPD-703-1
SPD-703-1 Installation and Operation Manual Appendix B IR-ETH Interface Module
B.3 Installation and Operation
shows the Ethernet bridge layout, the location of the SW-1 DIP switch, and the rear panel components.
1
2
3
4
Figure B-4. IR-ETH Layout (UTP Option)
DIP Switch Settings
describes functions and default settings of the DIP switch SW-1 sections.
Table B-2. DIP Switch Settings
Section
Number
Name Description
1 SQ/FD ON – Full-duplex operation
OFF – Half-duplex operation
Note : The SQ/FD switch is not used in the IR-ETH module with BNC connector.
2
3
4
CMP ON – Strips padding bits inserted in 64-byte frame
OFF – Transmits frames over WAN as is
FIL ON – Passes only frames destined for another LAN
OFF – Disables LAN filter; passes all frames transparently
(nc)
Default
Setting
OFF
ON
ON
SPD-703-1 Installation and Operation B-3
Appendix B IR-ETH Interface Module SPD-703-1 Installation and Operation Manual
LED Indicators
lists the IR-ETH LED indicators and describes their functions.
Table B-3. IR-ETH Bridge LED Indicators
LED
Name
LINK
COLL
RX
TX
ON – Good link integrity Rear panel
ON – Collision on the attached Ethernet segment Rear panel
Rear panel ON – Data is received from the Ethernet attached segment
ON – Data is transmitted from the modem to the
Ethernet segment
Rear panel
ERR D4 ON – Bridge buffer overrun On the
IR-ETH board
Green
Yellow
Yellow
Yellow
Red
Connecting to LAN
When connecting an IR-ETH interface module with the UTP option, use either a straight cable or a cross-cable for the LAN connection. Use a cross-cable when connecting to a port that does not implement the crossover function internally.
Otherwise, use a straight cable.
Note Hubs usually do implement the crossover function internally while network interface cards and other devices do not.
B-4 Installation and Operation SPD-703-1
DC Power Supply Connection – AC/DC Adapter (AD) Plug
Note: Ignore this supplement if the unit is AC-powered.
Certain units are equipped with a Wide Range AC/DC power supply. These units are equipped with a standard AC-type 3-prong power input connector located on the unit rear panel. This power input connector can be used for both AC and DC voltage inputs.
For DC operation, a compatible AC/DC Adapter (AD) plug for attaching to your
DC power supply lines is used (see Figure 1 ).
Connect the wires of your DC power supply cable to the AD plug, according to the voltage polarity and assembly instructions provided below.
Figure 1
Caution: Prepare all connections to the AD plug before inserting it into the unit’s power connector.
Preparing and Connecting the Power
Supply Cable with the AD Plug
1. Loosen the cover screw on the bottom of the AD plug to open it
(see Figure 2 ).
2. Run your DC power supply cable through the removable cable guard and through the open cable clamp.
3. Place each DC wire lead into the appropriate AD plug wire terminal according to the voltage polarity mapping shown .
Afterwards, tighten the terminal screws close.
4. Fit the cable guard in its slot and then close the clamp over the cable. Tighten the clamp screws to secure the cable.
5. Reassemble the two halves of the AD plug and tighten the cover screw.
6. Connect the assembled power supply cable to the unit.
AC/DC power input connector on unit
Bottom of AD plug
Wire terminals
~100-240VAC/ 48/60VDC
Cable clamp
(closed)
RETURN
Cable guard
POWER
Open
AD plug
(top view)
DC power cable
Warning:
• Reversing the wire voltage polarity will not cause damage to the unit, but the internal protection fuse will not function.
• Always connect a ground (earth) wire to the AD plug’s Chassis
(frame) Ground terminal. Connecting the unit without a protective ground, or interruption of the grounding (for example, by using an extension power cord without a grounding conductor) can cause harm to the unit or to the equipment connected to it!
• The AD adapter is not intended for field wiring.
Chassis
(frame)
Ground
+
Positive pole
(Earthed)
DC power
source
Figure 2
Negative pole
SUP-930-05/04
DC Power Supply Connection – Terminal Block Connector
Note: Ignore this supplement if the unit is
AC-powered.
Certain DC-powered units are equipped with a plastic 3-pin
VDC-IN power input connector, located on the unit rear panel.
Different variations of the connector are shown in Figure 1. All are functionally identical.
Supplied with such units is a kit including a mating Terminal
Block (TB) type connector plug for attaching to your power supply cable.
Connect the wires of your power supply cable to the TB plug, according to the voltage polarity and assembly instructions provided below.
A B C
Caution: Prepare all connections to the TB plug before inserting it into the unit’s VDC-IN connector.
Preparing and Connecting the Power
Supply Cable with the TB Plug
Refer to Figure 2 for assistance.
1. Strip the insulation of your power supply wires according to the dimensions shown.
2. Place each wire lead into the appropriate TB plug terminal according to the voltage polarity mapping shown in Figure 4.
(If a terminal is not already open, loosen its screw).
Afterwards, tighten close the three terminal screws.
3. Pull a nylon cable tie (supplied) around the power supply cable to secure it firmly to the
TB plug grip, passing the tie through the holes on the grip.
4. Isolate the exposed terminal screws/wire leads using a plastic sleeve or insulating tape, to prevent the possibility of short-circuit.
5. Connect the assembled power supply cable to the unit by inserting the TB plug into the unit’s
VDC-IN connector until it snaps into place.
Typical DC Power
Input Connector
(on unit panel)
D
20 mm
5 mm
Mating
TB Connector
Plug
Figure 2. TB Plug Assembly
E
Figure 1. TB DC Input Connectors Types
Appearing on Unit Panels
Terminal screws
Wire stripping dimensions
See following page for wire mapping
Nylon cable tie
TB plug grip
DC power cable
SUP-220-03/03
Note : Certain TB plugs are equipped with captive screws for securing the assembled cable’s
TB plug to the unit’s VDC-IN connector (C and
E types only). To secure the plug, tighten the two screws on the plug into the corresponding holes on the sides of the input connector as shown in
Figure 3 . Captive screws
Figure 3. TB Plug with Captive Screws (optional)
DC Power Supply Wire Voltage Polarity
Refer to Figure 4 for proper mapping of the power supply wire leads to the TB plug’s three terminals.
TB Connector
Plug
Warning:
• Reversing the wire voltage polarity can cause damage to the unit!
• Always connect a ground (earth) wire to the TB plug’s
Chassis (frame) Ground terminal. Connecting the unit without a protective ground, or interruption of the grounding (for example, by using an extension power cord without a grounding conductor) can cause harm to the unit or to the equipment connected to it!
0 -48
( )
Chassis (frame)
Ground
+
Positive pole
-
Negative pole 24/48VDC
Figure 4. Power Supply Wire Mapping
to TB Plug
24 Raoul Wallenberg Street, Tel Aviv 69719, Israel
Tel: +972-3-6458181, Fax +972-3-6483331, +972-3-6498250
E-mail: erika_y@rad.com
, Web site: http://www.rad.com
Customer Response Form
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Thank you for your assistance!
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SPD-703-1
452-200-07/07
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Publication No. 452-200-07/07
International Headquarters
24 Raoul Wallenberg Street
Tel Aviv 69719, Israel
Tel. 972-3-6458181
Fax 972-3-6498250, 6474436
E-mail market@rad.com
North America Headquarters
900 Corporate Drive
Mahwah, NJ 07430, USA
Tel. 201-5291100
Toll free 1-800-4447234
Fax 201-5295777
E-mail market@radusa.com
www.rad.com
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