INSTALLATION AND OPERATIONS MANUAL
HUB-MOUNT
SOLID STATE L-BAND TRANSCEIVERS
AWMT-L
PM AWMT-L REV. 30
AWMT-L
WARRANTY
This Advantech Wireless product is warranted against defects in material and workmanship for a
period of 2 years from the date of shipment. During the warranty period, Advantech Wireless
will, at its option, either repair or replace products that will prove to be defective.
To return a product for warranty or repair service, you must first request a Return Material
Authorization (RMA) number by contacting Advantech Wireless at:
Phone:
(514) 420-0045
or
Website: www.advantechwireless.com or
Fax: (514) 420-0073
e-mail: support@advantechwireless.com
The unit should be shipped to the following address, in original shipping container (box), with
shipping charges prepaid.
Advantech Wireless
657 Orly Avenue
Dorval, Quebec
H9P 1G1
CANADA
Please indicate the RMA number on all shipping documentation.
Units shipped without prior issued RMA, or shipped not in original packing, may be subject of
rejection and returned at sender’s own expense.
LIMITATIONS OF WARRANTY
Advantech Wireless warrants this product to be free of materials and workmanship defects.
The foregoing warranty shall not apply to defects resulting from improper handling or abuse by
the Buyer, unauthorized modification, operation outside of the environmental specifications for
the product, or improper installation or maintenance.
Advantech Wireless shall not be liable for any direct, indirect, special, incidental or
consequential damages.
1
AWMT-L
CONTENTS
1. SAFETY .................................................................................................................................. 6
2. PACKING LIST ..................................................................................................................... 8
2.1 SINGLE UNIT PACKING LIST....................................................................................... 8
3. GENERAL INFORMATION.............................................................................................. 10
4. MAJOR SUBSYSTEMS AND THEIR FUNCTIONS ...................................................... 11
4.1 INTRODUCTION ........................................................................................................... 11
4.2 DESCRIPTION................................................................................................................ 11
4.3 UNIT MAJOR COMPONENTS ..................................................................................... 11
4.3.1 L-Band to RF Up-Converter Module ........................................................................ 15
4.3.2 Power Amplifier Module ........................................................................................... 15
4.3.3 Waveguide Assembly ................................................................................................. 15
4.3.4 Low Noise Block (LNB)............................................................................................. 15
4.3.5 LNB Interface Module............................................................................................... 16
4.3.6 Externally Supplied 10 MHz Reference .................................................................... 16
4.3.7 Main Controller Board.............................................................................................. 16
4.3.8 Power Supply............................................................................................................. 18
5. INTERFACES ...................................................................................................................... 19
5.1 RELAY INTERFACE ..................................................................................................... 19
5.2 RS-232 INTERFACE ...................................................................................................... 22
5.3 RS-485 INTERFACE ...................................................................................................... 22
5.4 REDUNDANT INTERFACE.......................................................................................... 23
5.5 RF OUTPUT MONITOR INTERFACE ......................................................................... 23
6. UNPACKING AND INSTALLATION .............................................................................. 24
6.1 INITIAL INSPECTION................................................................................................... 24
6.2 UNPACKING .................................................................................................................. 24
6.3 INSTALLATION ............................................................................................................ 24
6.3.1 Relay, Serial Interfaces and AC Power Cables Construction................................... 24
6.3.2 Environmental and Adequate Ventilation Considerations........................................ 25
6.3.3 Mechanical, RF and Electrical Installation.............................................................. 25
7. PRE-POWER AND SYSTEM CHECKOUT .................................................................... 28
7.1 PRE-POWER PROCEDURES........................................................................................ 28
7.2 OPERATIONAL SETTINGS VERIFICATION............................................................. 28
8. OPERATION ........................................................................................................................ 29
8.1 INTRODUCTION ........................................................................................................... 29
8.2 SAFETY CONSIDERATIONS....................................................................................... 29
8.3 BASIC OPERATING PROCEDURE ............................................................................. 29
8.4 AUTOMATIC LEVEL CONTROL (ALC) .................................................................... 31
8.5 USING THE AWMT-L SOFTWARE............................................................................. 32
8.5.1 Using the RS-232 Interface ....................................................................................... 32
2
AWMT-L
8.5.2 Using the RS-485 Interface ....................................................................................... 41
9. MAINTENANCE.................................................................................................................. 42
9.1 PREVENTIVE MAINTENANCE................................................................................... 42
9.2 MECHANICAL PREVENTIVE MAINTENANCE....................................................... 42
9.3 COOLING FAN CHECK ................................................................................................ 42
10. APPENDIX A: RS-485 SERIAL COMMUNICATION PROTOCOL........................ 43
10.1 FRAME STRUCTURE ................................................................................................... 43
10.2 COMMANDS .................................................................................................................. 43
10.3 RESPONSE TO COMMANDS FROM SLAVE TO MASTER..................................... 46
11. APPENDIX B: SAFETY AND EMC COMPLIANCE.................................................. 51
12. APPENDIX C: SPECIFICATIONS FOR 50 W L-BAND TO C-BAND
TRANSCEIVERS MODEL AWMT-LC50-CRE P/N 1T0-315310-3B0 ................................ 52
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AWMT-L
FIGURES
FIGURE 1: PRODUCT OUTLINE (C-BAND)...................................................................................... 12
FIGURE 2: PRODUCT OUTLINE (KU-BAND) ................................................................................... 13
FIGURE 3: BLOCK DIAGRAM (SINGLE UNIT) ................................................................................. 14
FIGURE 4: TYPICAL CONNECTOR LAYOUT (C-BAND) ................................................................... 20
FIGURE 5: TYPICAL CONNECTOR LAYOUT (KU-BAND)................................................................. 21
FIGURE 6: RS-232 HYPERTERMINAL MODE DISPLAY (AFTER PRESSING <ENTER>) SINGLE UNIT
................................................................................................................................................ 33
FIGURE 7: RS-232 HYPERTERMINAL MODE DISPLAY (AFTER PRESSING <ENTER>) REDUNDANT
SYSTEM .................................................................................................................................... 34
FIGURE 8: RS-232 HYPERTERMINAL COMMUNICATION - LIST OF COMMANDS (AFTER TYPING H
<ENTER> FOR HELP) – PART 1............................................................................................... 36
FIGURE 9: RS-232 HYPERTERMINAL COMMUNICATION - LIST OF COMMANDS (AFTER TYPING H
<ENTER> FOR HELP) – PART 2............................................................................................... 37
FIGURE 10: PROPOSED GRAPHICAL USER INTERFACE (GUI) BASED ON RS-485 PROTOCOL –
SINGLE UNIT............................................................................................................................. 49
FIGURE 11: PROPOSED GRAPHICAL USER INTERFACE (GUI) BASED ON RS-485 PROTOCOL –
SINGLE UNIT, WITH ALC SET ................................................................................................... 50
4
AWMT-L
TABLES
TABLE 1: PACKING LIST FOR AWMT-L TRANSCEIVER ..................................................... 8
TABLE 2: PACKING LIST FOR AWMT-LC50-CRE TRANSCEIVER...................................... 9
TABLE 3: CONNECTORS.......................................................................................................... 20
TABLE 4: RELAY INTERFACE – PIN ASSIGNMENT........................................................... 21
TABLE 5: RS-232 INTERFACE – PIN ASSIGNMENT............................................................ 22
TABLE 6: RS-485 INTERFACE – PIN ASSIGNMENT............................................................ 23
TABLE 7: ENVIRONMENTAL CONDITIONS ........................................................................ 25
TABLE 8: SERIAL INTERFACE RS-232 CONNECTION INFORMATION .......................... 27
TABLE 9: AC LINE (J5) CONNECTOR – PIN ASSIGNMENT............................................... 27
TABLE 10: RS-232 MENU ITEM DEFINITION....................................................................... 35
TABLE 11: COMPUTER TERMINAL COMMANDS FOR RS-232 INTERFACE ................. 38
TABLE 12: COMMAND TO TRANSCEIVER .......................................................................... 44
TABLE 13: CONDITION STATUS RESPONSE....................................................................... 46
TABLE 14: READ IDENTIFICATION RESPONSE ................................................................. 46
TABLE 15: READ FREQUENCY SET RESPONSE ................................................................. 47
TABLE 16: UNIT STATUS AND POSITION RESPONSE....................................................... 47
TABLE 17: READ VALUE RESPONSE.................................................................................... 48
TABLE 18: TRANSMITTER SPECIFICATIONS ..................................................................... 52
TABLE 19: RECEIVER SPECIFICATIONS.............................................................................. 54
TABLE 20: MECHANICAL SPECIFICATIONS....................................................................... 55
TABLE 21: POWER REQUIREMENTS .................................................................................... 55
5
AWMT-L
1. SAFETY
To prevent the risk of personal injury or loss related to equipment malfunction Advantech
Wireless uses the following symbols for safety related information. For your own safety, please
read the information carefully BEFORE operating the equipment.
Symbols used in manual:
WARNING! This indicates a hazardous procedure that could result in serious injury or death if
not performed properly.
CAUTION! This indicates a hazardous and dangerous procedure that could result in lightto-severe injury or loss related to equipment malfunction, if proper precautions
are not taken.
------------------------------------------------ WARNING --------------------------------------------------When supplying power to this equipment, use the 3-pin connector provided, to connect to a
grounded power outlet. If power is supplied without grounding the equipment, there is a risk of
receiving a severe or fatal electric shock.
In the context of this document any voltage that is lethal is viewed as ‘High Voltage’. Therefore,
even prime power (90 to 264) VAC is dangerous to handle because the prime power potentials
have been known to cause injury or death.
------------------------------------------------ WARNING --------------------------------------------------The operator cannot repair this equipment. DO NOT attempt to remove the equipment cover
or to disassemble internal components. Only qualified service technicians should service this
equipment. There are high-voltage parts within this equipment that present a risk of severe
injury to untrained personnel. In addition, there is a risk of damaging to precision components.
----------------------------------------------- WARNING --------------------------------------------------ALWAYS TERMINATE THE RF OUTPUT PORTS OF THE TRANSCEIVER WITH RF
LOADS CAPABLE OF DISSIPATING FULL CW RF POWER.
SIMILARLY
TERMINATE THE RF INPUT PORTS TO AVOID THE POSSIBILITY OF THE UNIT
BEING DRIVEN BY STRAY LEAKAGE SIGNALS. Incorporate the terminations prior to
applying prime power to the unit. This procedure prevents self-oscillation and irradiation into
the local environment. Even if a source is not connected to the unit, there are situations where
the transceiver can go into a self-induced mode and generate high levels of RF energy.
6
AWMT-L
Destruction caused under an excessive load voltage standing wave ratio (VSWR) will void the
warranty. Although this equipment has an internal protection VSWR of greater than 3:1 and will
automatically shutdown within a delay of 1 second, it is still a safe procedure to avoid the
unwanted effects.
----------------------------------------------- WARNING --------------------------------------------------DO NOT LOOK INTO THE RF OUTPUT PORTS OF THE POWERED
TRANSCEIVER. Treat the powered unit with extreme care. Keep in mind that although the
levels of microwave radiation do not induce immediate physical discomfort in most individuals
the levels can be sufficiently high to induce long term effects. The eyes are the most vulnerable
parts of the body.
The permissible levels of exposure are quite low compared to the power levels of the
transceivers built by Advantech Wireless (e.g. less than 10 mW versus 20 to 500 W delivered by
various units). The permissible levels are currently being studied by a number of organizations.
In the past the U.S. safety Code established a dosage rate of 10 mW/cm2. Currently there is
consideration being given to reduce the permissible level to 1 mW/cm2 in the United States, as
has been the case for several European countries.
----------------------------------------------- CAUTION----------------------------------------------------THE UNIT IS VERY HEAVY! AT LEAST TWO OR MORE INDIVIDUALS OR AN
EQUIPMENT CART IS REQUIRED TO LIFT AND MOVE THE UNIT. There is a risk of
back injury if a single person handles this equipment.
In addition to this Section, included by reference are the following pertinent sections of the
International Standard IEC-215, ‘Safety requirements for radio transmitting equipment’:
Appendix D, ‘GUIDANCE ON ASSESSING THE COMPETENCE OF PERSONNEL FOR
DESIGNATION AS SKILLED’ and also Sub-clause 3.1 of the Standard.
Appendix E, ‘GUIDANCE ON SAFETY PRECAUTIONS TO BE OBSERVED BY
PERSONNEL WORKING ON RADIO TRANSMITTING EQUIPMENT’, also Sub-clauses 3.2,
3.7 and 22.1 of the Standard.
7
AWMT-L
2. PACKING LIST
2.1 SINGLE UNIT PACKING LIST
TABLE 1: PACKING LIST FOR AWMT-L TRANSCEIVER
Item
Quantity
Description
Part #
1.
1
Installation and Operating Manual
PM AWMT-L Rev. 30
2.
1
Transceiver, model AWMT-L
See specifications
3.
1
Connector circular MIL C-5015, straight cable plug, 3
631-310616-001
sockets, MS3106F16-10S (connector for J5)
4.
2
Connector circular, MIL-C-26482, 6 contacts female,
631-311606-001
straight cable plug, shell 10, MS3116F10-6S
(connectors for RS-232 and RS-485 Serial Interfaces)
5.
1
Connector circular, MIL-C-26482, 10 contacts
female, straight cable plug, shell 12 (connector for
RELAY Interface)
631-311612-003
6.
1 roll
Moisture sealing/insulating tape (mastic tape)
709-224200-001
ITEMS BELOW ARE FOR RF INPUT & OUTPUT PORTS TERMINIATED WITH WR-75 FLANGE
7.
1
Waveguide Gasket WR-75
820-075000-001
8.
4
#6-32 x ½ inch Mach screw hex head 18-8 Stainless
Steel (SS)
802-632090-001
9.
4
#6 Split washer 18-8 SS
803-600100-001
10.
4
#6 Small Flat Washer 0.312 inch OD, 0.155 inch ID,
0.035 inch thick 18-8 SS
803-600200-002
ITEMS BELOW ARE FOR RF OUTPUT PORTS TERMINIATED WITH CPR-137 FLANGE
11.
1
Waveguide Gasket CPR-137
705-137000-001
12.
8
#10-32 x 1/2” Mach screw hex head 18-8 Stainless
Steel (SS)
802-103290-001
13.
8
#10 Split washer 18-8 SS
803-100100-001
14.
8
#10 Flat Washer 7/16 OD X.20 OD X.031 THK
18-8 SS
803-100200-001
8
AWMT-L
TABLE 1: PACKING LIST FOR AWMT-L TRANSCEIVER (Continued)
Item
Quantity
Description
Part #
ITEMS BELOW ARE FOR RF INPUT PORTS TERMINATED WITH CPR-229 FLANGE
15.
1
Waveguide Gasket CPR-229
705-137000-001
16.
10
#10-32 x 1/2” Mach screw hex head 18-8 Stainless
Steel (SS)
802-103290-001
17.
10
#10 Split washer 18-8 SS
803-100100-001
18.
10
#10 Flat Washer 7/16 OD X.20 OD X.031 THK
18-8 SS
803-100200-001
TABLE 2: PACKING LIST FOR AWMT-LC50-CRE TRANSCEIVER
P/N 1T0-315310-3B0
(Shipping Kit P/N 19T-31B510-3B1)
Item
Quantity
Description
1.
1
Installation and Operating Manual
2.
1
Transceiver, model AWMT-LC50-CRE
3.
1
4.
2
5.
1
6.
1
7.
1
Tape Electrical Moisture Sealing 3/4" x 15 Feet
709-224200-001
8.
8
10-32x1/2" Machine Screw Hex Head 18-8
Stainless Steel (SS)
802-103290-001
9.
8
#10 Split Washer 18-8 SS
803-100100-001
10.
8
#10 Flat Washer 7/16ODx0.20IDx031"THK 188 SS
803-100200-001
Connector Circular 5015 Straight Plug 16 Shell
3 Sockets MS3106F16-10S (mating connector
for J5)
Connector Circular 26482 Straight Plug 10 Shell
6 Sockets MS3116F10-6S (mating connectors
for RS-232 and RS-485 Serial Interfaces)
Connector Circular 26482 Straight Plug 12
Shell10 Sockets J12-10S Water Proof
(connector for RELAY Interface)
Gasket CPR Half WR137 Silicone NonConductive
Part #
PM AWMT-L Rev. 30
1T0-315310-3B0
631-310616-001
631-311606-001
631-311612-003
705-137000-001
9
AWMT-L
3. GENERAL INFORMATION
This manual contains information that describes the installation, operation and maintenance
procedures for the hub-mount (outdoors) Solid State Transceiver, model AWMT-L. Because
specialized training is required for some phases of installation and operation, this manual is
directed only to trained personnel. Warnings appear at the appropriate points to caution all users
of potential RF and high-voltage hazards.
For a safe and versatile operation, please read the information carefully BEFORE using the
equipment.
Advantech Wireless has prepared this manual for use by the customers as a guide for the proper
installation, operation and maintenance of Advantech Wireless equipment and computer
programs. The drawings, specifications, and information contained herein are the property of
Advantech Wireless. Unauthorized use or disclosure of these drawings, specifications and
information is strictly prohibited. They shall not be reproduced, copied or used in whole or in
part as the basis for manufacturing or sale of the equipment or software programs without the
prior written consent of Advantech Wireless.
10
AWMT-L
4. MAJOR SUBSYSTEMS AND THEIR FUNCTIONS
4.1 INTRODUCTION
This Section describes how the hub-mount (outdoors) solid state transceiver functions.
4.2 DESCRIPTION
The AWMT-L is an outdoor unit intended for mounting near the hub of an antenna (see Figure 1 at
page 12 and Figure 2 at page 13). The unit incorporates a weather resistant enclosure that houses
several electronic modules and a cooling system that protects the electronic components from
overheating. For low power models, the cooling system consists of conduction from the module
enclosure to the case. For high power models, the cooling system is forced-air, using one or more
cooling fans.
Built-in monitoring and control features indicate the current status of the AWMT-L and provide
fault detection and protection when operating outside its normal operating conditions. The
AWMT-L also allows the user access to the monitoring and control functions by using a discrete
interface, the RS-232 serial interface or the RS-485 serial interface.
A functional block diagram of a single unit is shown in Figure 3 at page 14.
The AWMT-L can be combined with a second unit to form a 1:1 redundant system.
redundancy kit by Advantech Wireless is available as an option.
A
4.3 UNIT MAJOR COMPONENTS
The AWMT-L transceiver consists of the following major components:
• L-Band to RF Up-Converter Module,
• Power Amplifier Module,
• RF-Band Low Noise Block (LNB)
• LNB Interface Module
• Waveguide Assembly,
• 10 MHz Reference Oscillator,
• Main Controller Board,
• Power Supply,
• Current Sensor, and
• Power Monitor Board.
These components are interconnected using dedicated wiring harnesses and coaxial cables. To
clarify the explanation of the components in the following paragraphs, refer to the block diagram
in Figure 3 at page 14.
11
AWMT-L
Figure 1: Product Outline (C-Band)
12
AWMT-L
Figure 2: Product Outline (Ku-Band)
13
LNB
+15 V
GND
-9 V
RS-485_L-IF
MUTE_L-IF
ALM_L-IF
COOLING
FAN
0 ... 48V (FAN)
+12 V
NEUTRAL
GND
C
+ 15 V
GND
B
RS-485_L-IF
+12 V
-9 V
-9V
THERM
RS-485_PA
-9V
+12 V
-9 V
+ 12 V
RS-485_L-RF
MAIN CONTROLLER BOARD
MUTE_PA
THERM
ALM_PA
GND
+12 V
ALM_PA
ALM_L-IF
+12V
CURRENT
SENSOR
+12 V
CS
ALM_L-RF
POWER
SUPPLY
LPF
MUTE_PA
BOTTOM SHROUD
AMP
POWER MONITOR
MODULE
OUTPUT
POWER
DETECTOR
TEMP
SENSOR
30 dB
CIRCULATOR
40 dB
MUTE_L-IF
GND
LINE
LPF
to
THERM
+12V,
-9V
HPA
oC
CONTROLLER
&
POWER CONDITIONER BOARD
+12V,
-9V
MPA
THERMISTOR
RS-485_PA
CONTROLLER
VAMP
AMP
ISOLATOR
HPA ASSEMBLY
RS-485_PM
A
RS-485_L-RF
LNB INTERFACE MODULE
BPF
CAVITY
FILTER
RS-485
-9 V
J5
AC LINE
L-BAND IN
GND
10 MHz 10 MHz
AMP
+12 V
10 MHz
PLL
LO
VVA MIXER
CONTROLLER
AMP
ALM_L-RF
+15 V
10 MHz
10 MHz
DIPLEXER
L-Band
L-BAND TO RF UP-CONVERTER
FW_PWR
RX_OUT
LNB
TX_IN
(L-Band
&
10 MHz)
LEDS
+5V
RS-232
RELAY
LIGHTNING
ARRESTER
REDUND
RS-485
W/G
TRANSITION
RECEIVE
LEDs
TRANSM
RS-232
RELAY
RS-485
REDUND
TX_OUT
MON
AWMT-L
+12 V
RS-485_PM
+12 V
GND
Figure 3: Block Diagram (Single Unit)
14
AWMT-L
4.3.1 L-BAND TO RF UP-CONVERTER MODULE
The L/RF Up-Converter Module converts and amplifies the incoming L-Band carrier into the
desired RF-Band carrier.
The synthesizer within the module contains an out of lock protection circuitry that prevents the
RF carrier from shifting in frequency. When the oscillator is not phase-locked with the
10 MHz reference, an Alarm signal is sent to the main controller board and the up-converter
module will mute automatically.
4.3.2 POWER AMPLIFIER MODULE
The Power Amplifier Module amplifies the RF signals arriving from the L/RF
Up-Converter module.
Temperature sensors are installed at the module’s hot spots to prevent the RF devices from
overheating and operating at temperatures exceeding 85ºC.
The power amplifier will be in the Mute mode if the user sends a MUTE command through the
Relay or serial interfaces.
The power amplifier will shut down if the hot spot temperature exceeds +85 °C and any of the
GaAs FET devices fails.
4.3.3 WAVEGUIDE ASSEMBLY
The Waveguide Assembly contains a forward and reflected power detector, an RF output
circulator and the harmonic filters.
The forward power and the reflected power detectors monitor the RF output power level and the
reflected power level respectively. The digital signals are sent to the Main Controller Board.
The circulator provides a VSWR protection at the RF output port. The termination load of the
isolator is capable of fully absorbing any reflected power.
4.3.4 LOW NOISE BLOCK (LNB)
The LNB functions as a low noise amplifier and a frequency down converter. The RF input
signals are shifted downwards into the L-Band frequency range. Following the conversion the
L-Band signals are amplified to a power level sufficient for receiving needs. Note that this
assembly is external to the L-Band Transceiver main enclosure.
15
AWMT-L
4.3.5 LNB INTERFACE MODULE
The LNB Interface Module receives the L-Band signal from the LNB, amplifies this signal and
provides a gain control of the received signal.
This module provides 10 MHz reference signal and +15 V DC supply to the external LNB
module.
4.3.6 EXTERNALLY SUPPLIED 10 MHZ REFERENCE
An external 10 MHz reference signal is used for these units. The externally applied 10 MHz
reference power level should be between –3 dBm and +3 dBm and a frequency of 10 MHz ± 2
Hz. The 10 MHz reference is supplied at the Tx_IN input connector along with the L-Band input
signal.
4.3.7 MAIN CONTROLLER BOARD
The Main Controller Board contains a microprocessor controller that performs all of the
monitoring and control, input/output communication and the decision-making. The main
controller board provides:
1. Fault detection and indication from each module of the unit,
2. Mute control and indication (Tx and Rx),
3. Forward RF power indication,
4. Reflected RF power indication,
5. Redundancy control (Tx and Rx),
6. Frequency control (Tx and Rx),
7. Unit Gain control (Tx and Rx), and
8. All interfaces.
16
AWMT-L
4.3.7.1 FAULT Detection and Indication
The Tx path of the unit will automatically go into a shutdown mode and send a message to all of
the external interfaces when any one of the following occurs:
1. The local oscillator within the up-converter module is out of lock.
2. The hotspot temperature exceeds 85°C.
3. Any of the GaAs FET devices failed.
4. Current of +12 VDC supply is out of range.
5. Load VSWR at RF output port (transmit path) exceeds 3.0:1.
The Tx path of the AWMT-L continually monitors the internal temperature and the current
consumption. It also has an automatic shutdown feature to prevent operation at excessive
temperatures. The unit will automatically restart when the hotspot temperature falls below 65°C.
The Rx path of the unit will automatically go into a shutdown mode and send a message to all of
the external interfaces if:
1. The LNB Interface Module failed.
2. The LNX current is out of range.
4.3.7.2 Tx MUTE Control
The user can remove the RF output power for the Tx path remotely by:
1. Leaving unconnected pins G and H of the Relay interface (see Section 5.1 at page 19).
2. Sending a mute command in terminal mode through the serial interface.
This feature is useful if the user wishes to perform a maintenance check or to check out the
transmission system.
4.3.7.3 Rx MUTE Control
The user can remove the RF output power for the Rx path remotely by:
1. Leaving unconnected pins J and H of the Relay interface (see Section 5.1 at page 19).
2. Sending a mute command in terminal mode through the serial interface.
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AWMT-L
4.3.8 POWER SUPPLY
The Power Supply Module provides +12 VDC, +15 VDC and –9 VDC outputs to all of the
internal modules.
The separate +48 VDC is necessary to operate the cooling fan. The voltage is variable and
temperature dependent that will ensure a variable rotation speed of the cooling fan related to the
temperature (the fan will rotate slower when the temperature is low and faster when the
temperature is high).
The power supply is configured to operate from a 90-138 or 180-264V AC (autoranging),
47-63 Hz, single phase supply.
18
AWMT-L
5. INTERFACES
Each transceiver provides five interfaces that can be used to connect the unit to several optional
external devices. The interfaces for this model are listed below:
1. Relay (Discrete) Interface: This interface offers the essential monitoring and control of the
transceiver by the discrete signals.
2. RS-232 Interface: This interface offers the operator essential monitoring and control of the
transceiver using a PC with Term95 or HyperTerminal communications programs.
3. RS-485 Interface: This interface offers the complete monitoring and control of the AWMTL transceiver through the RS-485 serial communication port in packet mode. The system
may be connected to a Monitor & Control Panel or to a Network Manager System (NMS)
4. RF Output Monitor Interface: This interface provides a sample of the output power of the
unit through a 40-dB coupler.
5. Redundancy Interface: The redundant interface provides the communication link between
the two AWMT-L micro-controllers within a 1:1 redundant system. This interface also
provides control over a redundancy waveguide switch.
6. TX & RX LED’s: green/red LED’s indicating the state of the transmission & receive paths.
•
If this LED is not lit, the unit is not powered (or the power supply failed). In redundant
systems, if this LED is not lit it indicates that the unit is in STAND-BY and in MUTE.
•
If this LED is RED lit, it indicates that the unit is in FAULT or ALARM condition.
•
If this LED is blinking RED, it indicates that the unit is in MUTE state (following a
MUTE command).
•
If this LED is GREEN lit, it indicates that the unit is functioning properly. In redundant
system if the LED is GREEN lit indicates that the unit is ON-LINE. If it is blinking
GREEN it indicates that the unit is in STAND-BY and NOT MUTE (RF ON).
5.1 RELAY INTERFACE
The Relay Interface uses a 10-pin circular connector mounted on the transceiver enclosure. The
connector type is listed in TABLE 3 at page 20 and the location is shown in Figure 4 at page 20
and in Figure 5 at page 21. The pin assignment for this interface is shown in TABLE 4 at page
21.
Pins A, B and C of the connector are of Form-C relay type outputs that provide for the
indication of informing the status of the transmission path of the AWMT-L unit.
Pins D, E and F of the connector are of Form-C relay type outputs that provide for the
indication of informing the status of the receive path of the AWMT-L unit.
Pins G and H of the connector are input lines, allowing the user to mute or un-mute
transmit path of the AWMT-L.
Pins J and H of the connector are input lines, allowing the user to mute or un-mute
receive path of the AWMT-L.
CAUTION!
user an
user an
the RF
the RF
If pin G is not connected to pin H, the transmission path will remain disabled. If pin
J is not connected to pin H, the receiving path will remain disabled.
19
AWMT-L
TABLE 3: CONNECTORS
Connector
Function
Description
Mating Connector
(J1) Tx In
L-Band Input
N - Type (F)
N - Type (M)
N – Type (F) Low Power Output
N – type (M)
WR 75 (Flat) Ku-Band
High Power Output
WR 75 (grooved)
CPR 137 (Grooved) C-Band
High Power Output
CPR 137
(Flat or grooved)
(J7) RF Out
RF Output
(J4) Mon
RF Output Monitor
N - Type (F)
N - Type (M)
(J10) LNX
L-Band Input
(from LNB)
N - Type (F)
N - Type (M)
(J11)Rx Out
L-Band Output
N - Type (F)
N - Type (M)
(J2) RS-232
Serial Interface
MS3112E10-6P (M)
MS3116F10-6S (F)
(J12) RS 485
Serial Interface
MS3112E10-6P (M)
MS3116F10-6S (F)
(J3) Relay
Discrete Interface
MS3112E12-10P (M)
MS3116F12-10S (F)
(J6) Red
Redundancy Interface
MS3112E16-26P (M)
MS3116F16-26S (F)
(J5) AC
AC Line
MS3102R16-10P (M)
MS3106F16-10S (F)
(J9) 10 MHz
10 MHz External
Reference (optional)
N - Type (F)
N - Type (M)
(J13) +12V
LNX
+12V TO LNX
(optional)
MS3112E8-3S (F)
MS3116F8-3P (M)
or L OUT
or L-Band OUT
or N-Type (F)
or N-Type (M)
Figure 4: Typical Connector Layout (C-Band)
20
AWMT-L
Figure 5: Typical Connector Layout (Ku-Band)
TABLE 4: RELAY INTERFACE – PIN ASSIGNMENT
Pin
Signal Name
A
Tx AL-NC
B
Tx AL-COM
C
Tx AL-NO
D
Rx AL-NC
E
Rx AL-COM
F
Rx AL-NO
G
Tx MUTE
H
MUTE-COM
J
Rx MUTE
K
AN_OUT
Description
Normal closed contact of the Tx ALARM Form - C relay.
Pin A closed to pin B indicates ALARM in the transmission path.
Common contact of the Tx ALARM Form - C relay.
Normal open contact of the Tx ALARM Form – C relay.
Pin C open relative to pin B indicates ALARM in the transmission
path.
Normal closed contact of the Rx ALARM Form - C relay.
Pin D closed to pin E indicates ALARM in the receive path.
Common contact of the Rx ALARM Form - C relay.
Normal open contact of the Rx ALARM Form - C relay.
Pin F open relative to pin E indicates ALARM in the receive path.
Tx MUTE command:
If pin G is NOT connected to pin H, the transmission path is in
MUTE. If pin G is connected to pin H, the transmission path is ON.
Common contact of the Tx MUTE and Rx MUTE Commands
Rx MUTE command:
If pin J is NOT connected to pin H, the receive path is in MUTE.
If pin J is connected to pin H, the receive path is ON.
Analogue Output - Output Power Monitor (voltage: 5 V DC at rated
P1dB; > 0 V DC at 20 dB back-off)
21
AWMT-L
5.2 RS-232 INTERFACE
This serial communication interface offers to the operator the essential monitoring and control of
the AWMT-L using any PC terminal software. An IBM compatible personal computer can be
connected to this port. The interface uses a 6-pin circular connector mounted on the AWMT-L
enclosure. The type of mounting connector is listed in TABLE 3 at page 20 and the location is
shown in Figure 4 at page 20 and in Figure 5 at page 21. The pin assignment for this interface
is shown in TABLE 5 below.
TABLE 5: RS-232 INTERFACE – PIN ASSIGNMENT
Pin
Type
Signal Name
Description
A
N/C
N/A
Not connected
B
N/C
N/A
Not connected
C
Input
RX
Serial receive RX
D
Output
TX
Serial transmit TX
E
DC supply
+5V
Power supply for hand held terminal
F
Common
GND
Serial common
5.3 RS-485 INTERFACE
This serial communication interface provides access to all monitor and control functions for the
AWMT-L transceiver.
This interface uses a 6-pin circular connector mounted on the AWMT-L unit enclosure. The
type of mounting connector is listed TABLE 3 at page 20 and the location is shown in Figure 4
at page 20 and in Figure 5 at page 21. The pin assignment for this interface is shown in TABLE
6 at page 23.
The RS-485 interface used in a redundant system must be connected to the Network
Management System (NMS). The NMS will have access to both units that discriminates the two
by address.
If this interface is being used, an interconnecting cable with the proper mating connector must be
fabricated.
22
AWMT-L
TABLE 6: RS-485 INTERFACE – PIN ASSIGNMENT
Pin
Type
Signal Name
Description
A
Output
TX+
Serial transmit TX+
B
Output
TX-
Serial transmit TX-
C
Input
RX+
Serial receive RX+
D
Input
RX-
Serial transmit RX-
E
Common
COM
Common
F
Ground
GND
Safety ground / Shield
5.4 REDUNDANT INTERFACE
The Redundant Interface connections are made with a 26-pin circular connector mounted on
the AWMT-L enclosure. The connector location is shown in Figure 4 at page 20 and in Figure
5 at page 21. A redundant system cable is provided with the redundancy kit that provides the
interconnection between the two AWMT-L units and the waveguide switches.
5.5 RF OUTPUT MONITOR INTERFACE
This RF output sample port is located at the Mon connector, which is mounted on the AWMT-L
enclosure. The type of mounting connector is listed in TABLE 3 at page 20 and the location is
shown in Figure 4 at page 20 and in Figure 5 at page 21. This interface is used for the
independent monitoring of the AWMT-L output before the isolator and the harmonic filter. A
table of the coupling factor versus the frequency is provided with each unit.
23
AWMT-L
6. UNPACKING AND INSTALLATION
This Section contains instructions for the site preparation, unpacking and the installation of the
AWMT-L transceiver.
6.1 INITIAL INSPECTION
Inspect the shipping container for damage resulting from the shipment. If damaged, immediately
contact the carrier that delivered the equipment and submit a damage report. Failure to do so
may invalidate future claims.
6.2 UNPACKING
Carefully remove all of the items from the shipping container. Save all of the packing material
until completing successfully the visual inspection. Verify that all of the items listed on the
packing list have been received. If any of the items are missing, contact Advantech Wireless
immediately. Inspect all of the items for evidence of damage resulting from the shipment. If
damage seems evident, immediately contact the carrier that delivered the equipment and file a
claim. Failure to do so may invalidate future claims. Check the AWMT-L thoroughly for
damaged or loose parts.
6.3 INSTALLATION
Installation of the AWMT-L requires the following phases:
Relay, Serial Interface and AC Power interconnecting cable construction
Environmental and adequate ventilation considerations
Mechanical, RF and electrical installation
TABLE 3 at page 20 lists all of the mounting connectors used by the AWMT-L unit and their
corresponding mating connectors. Figure 4 at page 20 and in Figure 5 at page 21 show the
location of the mounting connectors.
6.3.1 RELAY, SERIAL INTERFACES AND AC POWER CABLES CONSTRUCTION
Prior to constructing the interconnecting cables, verify that the all of the cables are of sufficient
length in order to connect the AWMT-L unit to the user’s remote monitor and control system.
Construct the Relay, RS-232, RS-485 serial interfaces and AC Power interconnecting cables as
follows:
24
AWMT-L
1. To use the Relay interface, construct the interconnecting cable using the mating connector
provided in the shipping kit (see TABLE 3 at page 20). Refer to TABLE 4 at page 21 for
the correct pin assignment.
2. To use the RS-232 serial interface, construct an interconnecting cable with a proper mating
connector as given by TABLE 3 at page 20. Refer to TABLE 5 at page 22 for the correct
pin assignment.
3. To use the RS-485 serial interface, construct an interconnecting cable with a proper mating
connector as given by TABLE 3 at page 20. Refer to TABLE 6 at page 23 for the correct
pin assignment.
4. Construct an AC power cable with a proper mating connector as given by TABLE 3 at page
20. For the correct pin assignment, refer to TABLE 9 at page 27.
6.3.2 ENVIRONMENTAL AND ADEQUATE VENTILATION CONSIDERATIONS
The AWMT-L contains a forced air cooling system, which prevents the internal components
from overheating. The cooling subsystem consists of a single fan operating at a variable speed to
effectively distribute and remove the air from within the AWMT-L unit.
Prior to installing the AWMT-L, verify that:
1. Environmental conditions listed in TABLE 7 below will be met.
TABLE 7: ENVIRONMENTAL CONDITIONS
Temperature:
Non-operating (continuous exposure)
Operating (ambient)
- 50° C to + 85° C
- 30° C to + 55° C
Relative Humidity:
100% max., condensing, up to 2”/hr rain
Altitude:
10,000’ AMSL, derated 2° C / 1,000’ from AMSL
2. A minimum clearance of 30-cm (12 inches) is necessary in front of the air intake and exhaust
openings on the AWMT-L mounting-frame.
3. The fan intake grill and the exhaust openings of the AWMT-L are free of obstructing debris.
CAUTION!
Obstructing objects and/or debris may reduce the efficiency of the cooling system
and significantly impact the transceiver longevity.
6.3.3 MECHANICAL, RF AND ELECTRICAL INSTALLATION
1. Bolt the AWMT-L on to the antenna hub by using the six mounting holes provided by the
enclosure, see Figure 1 at page 12 and Figure 2 at page 13.
2. For AWMT-L units equipped with a waveguide flange at the RF output port:
a. Position the interconnecting waveguide system flange so that it aligns precisely with the
flange of the RF output port.
25
AWMT-L
b. Install the supplied waterproof gasket (supplied in the packing list) on to the
interconnecting waveguide flange.
CAUTION:
To protect the inside pressure window installed by Advantech Wireless, do not
pressurize the waveguide interior above 2-3 psi of pressure.
c. After alignment verification, loosely attach the interconnecting waveguide on to the RF
output port using the hardware provided in the shipping kit.
d. Carefully tighten all bolts (in opposite pairs rather than sequentially around the perimeter
of the flange) so that the connection is firm.
CAUTION!
Do not over-tighten the waveguide flange screws. Over-tightening the screws may
cause the stripping of the threads or distort the mating flange. The recommended
torque is 30 in-lbs for the screws.
3. For AWMT-L units equipped with an N type female connector at the RF output port, connect
to the port a transmission line equipped with an N type male connector.
4. Ground the AWMT-L by attaching a #6 gauge copper wire to the ground terminal provided
by the unit enclosure and to a properly grounded structure.
5. To use the Relay interface, attach the interconnecting cable fabricated per Section 6.3.1 at
page 24 to the Relay connector of the AWMT-L. Connect the free end of the interconnecting
cable to the operator’s monitor and control system.
NOTE:
Whether this interface is being used or not, it is necessary to connect pin G of the
Relay connector to pin H (common) in order to enable (un-mute) the transmission
path. If pin G of this interface is not connected to pin H, the transmission path of
the unit will remain muted. Also it is necessary to connect pin J of the Relay
connector to pin H (common) in order to enable (un-mute) the receiving path. If
pin J of this interface is not connected to pin H, the receiving path of the unit will
remain muted.
6. To use the RS-485 interface, connect the interconnecting cable fabricated per Section 6.3.1 at
page 24 to the RS-485 port of the AWMT-L.
7. To use the RS-232 interface, then:
a. Connect the interconnecting cable fabricated per Section 6.3.1 at page 24 to the RS-232
port of the AWMT-L.
b. Attach to the free end of the interconnecting cable a 9-pin or 25-pin D-type connector
with a pin assignment as listed in TABLE 8 at page 27.
c. Attach the cable with the 9-pin or 25-pin D-type connector to RS-232 port of a personal
computer.
26
AWMT-L
TABLE 8: SERIAL INTERFACE RS-232 CONNECTION INFORMATION
Serial Interface
RS-232 Pin
Active Condition
C
RS-232 at PC Pin
DB-9
DB-25
RX Í
3
2
D
TX Î
2
3
E
+5 VDC power source
-
-
F
Common
5
7
8. Connect the L-Band input source to the N-type female connector at the Tx In input port.
9. Verify that AC power source is switched OFF.
10. Verify that the AC power source can satisfy the power requirements given by the AWMT-L
specifications.
WARNING! Proper grounding of the AC power outlet is necessary for personnel and
equipment safety. Improper grounding may cause serious injury or death of
the operator.
11. Using the AC power cable fabricated per Section 6.3.1 at page 24, connect one end of the
power cable to port (J5) of the AWMT-L.
CAUTION!
Ensure that the proper pin is selected for AC operation. Applying power on the
wrong pin may permanently damage the AWMT-L necessitating factory repair.
Refer to TABLE 9 below for the correct pin assignment.
12. Connect the remaining end of the cable to the AC power source.
TABLE 9: AC LINE (J5) CONNECTOR – PIN ASSIGNMENT
Description
Pin
Phase (live)
A
Ground
B
Neutral
C
13. If necessary, connect a power meter or a spectral analyser to the RF output monitor port
(Mon).
27
AWMT-L
7. PRE-POWER AND SYSTEM CHECKOUT
This Section describes the pre-power procedure for the AWMT-L.
WARNING! The information presented in this Section is addressed to technicians who
have specific training in, and knowledge of Microwave Power Transceivers.
Inappropriate use of the AWMT-L may cause serious injury to the operator
or may result in damage of the unit. Do not attempt to operate the AWMT-L
before becoming thoroughly familiar with the contents in this Section.
NOTE:
When prime power is ON, the main controller board will start operating!
7.1 PRE-POWER PROCEDURES
Before applying power to the AWMT-L, verify that the following conditions are met:
1.
Verify that the voltage of the station’s AC prime power matches with the value marked
on the ID label.
2.
The prime power station is properly grounded.
3.
All cable and waveguide connections are secure and there is no evidence of pinched
wires and loose hardware.
4.
The circuit breaker at the prime power station is switched OFF.
5.
The L-Band input and RF output ports are connected to a matched source and a proper
load capable of withstanding full CW RF power.
6.
The cooling fan is unobstructed.
7.2 OPERATIONAL SETTINGS VERIFICATION
The AWMT-L arrives with all of its factory-pre-set operational values that meet the
requirements of a typical installation. Before starting the unit at the installation site, check the
configurable settings and if necessary, reset to meet the customer’s requirements.
28
AWMT-L
8. OPERATION
8.1 INTRODUCTION
This Section describes the normal operation of the AWMT-L. The design of this equipment
allows for minimal operator intervention and maintenance.
The AWMT-L may be monitored and controlled via the serial interfaces, or the Relay interface.
The Relay interface provides for the user an alarm indication and remote RF mute capability of
the designated AWMT-L unit. The RS-232 and the RS-485 serial interfaces provide access to
the AWMT-L functions, including the monitoring of key operating parameters, gain control (in
both transmission and receive paths), transmission/receive frequency control and shutdown.
8.2 SAFETY CONSIDERATIONS
WARNING! Prolonged operation without a load at the output may cause severe bodily
harm, loss of sight and even death. Do not operate the transceiver if the RF
output connector is not connected to a load.
Please note that an AWMT-L failure due to the above condition will be attributed to abuse or
neglect and will not be covered by the standard warranty.
8.3 BASIC OPERATING PROCEDURE
Perform the following operating procedure:
1. Verify that the ‘Pre-Power and System Checkout’ procedure as described in Section 7 at
page 28 was performed successfully.
2. Switch ON the main power source.
3. Allow at least ten seconds for the software to boot into the PC.
4. If using either the RS-232 or the RS-485 interface, set up the serial communication linkage
between the AWMT-L and the user’s computer terminal. See Section 8.5 at page 32. Press
t2 (command to switch to PC Terminal) and <ENTER> in Term95 or HyperTerminal
communications program.
29
AWMT-L
CAUTION: The unit will always start in RF ON (NOT MUTE) state, provided the correct
connections are installed at the Relay Interface. In order to set the unit functional, connect the
jumpers on the Relay Interface between pins G and H (to un-mute the transmission path) and
between pins J and H (to un-mute the receive path).
5. Ensure that the L-Band input signal is being applied to the Tx In port of the AWMT-L.
6. Adjust the frequencies of the transmission and receive paths in MHz.
7. Adjust the gain of the transmission and receive paths.
8. Allow the AWMT-L to warm up for 30 minutes, ensuring that all of the electrical
specifications are met.
30
AWMT-L
8.4 AUTOMATIC LEVEL CONTROL (ALC)
The unit has Automatic Level Control feature (ALC) that will keep the Tx output level at a
previously set value. Normally the unit should work with 10 dB less gain (set by operator) than the
maximum gain, in ALC mode and at an output power 3 to 15 dB back-off from P1dB. The 10 dB
less gain set is necessary as a reserve, in order to allow the ALC system to ensure a constant output
power in case the input power dropped.
The output power is monitored via an output power detector that sends to the Monitor & Control
Board an analogue voltage signal proportional with the actual output power. This signal is
converted into a digital value and stored in a calibration table putting in correspondence digital
values with actual output power levels. After a certain output power is set (by setting a certain gain
level to the unit) the M&C is able to maintain this set output power level by increasing or
decreasing the attenuation command signal that is sent to the attenuator for gain control. An ALC
control loop is so created ensuring the maintaining of the output power at the set level when the
input power varies.
The ALC command may be followed by a value of the needed output power level and in this case
the target power will be set to that value. If the ALC command is not followed by any value, the
current value of the output power level will be considered as target value.
Note that if the ALC feature is ON, the gain control is not available for the operator.
The ALC “high” alarm is issued when the input power is too high and the attenuation reached the
maximum allowable value (the attenuator cannot ensure enough attenuation of the input power).
The ALC “low” alarm is issued when the input power is too low and the attenuation reached the
minimum allowable value (even with 0 dB attenuation, at maximum gain set, the input power level
is too low for maintaining the target output level).
Up-CONVERTER
AMPLIFIER
30 dB
GAIN CONTROL
ALC LOOP
OUTPUT
POWER
DETECTOR
MONITOR
AND
CONTROL
31
AWMT-L
8.5 USING THE AWMT-L SOFTWARE
The RS-232 and the RS-485 interfaces provide the serial communication between the user’s
monitoring and control system and the micro-controller within the AWMT-L. The user may
employ any RS-232 terminal communications software (Term95, HyperTerminal or equivalent)
or the RS-485 serial communication protocol.
8.5.1 USING THE RS-232 INTERFACE
Before using the RS-232 Interface, become thoroughly familiar with the items listed in
TABLE 10 at page 35 and TABLE 11 at page 38.
Operate the AWMT-L via the RS-232 Interface as follows:
1. Switch on the power station’s circuit breaker to power up the AWMT-L.
2. Run any terminal program in the personal computer.
3. Use the following communication parameters:
- Bits per second: 19200
- Data Bits: 8
- Parity: None
- Stop bits: 1
- Flow Control: None
4. After running the program in the computer and pressing the <ENTER> key a display similar
to Figure 7 below will be shown.
NOTE:
The micro-controller determines automatically whether the unit is functioning
alone or in a 1:1 redundant system.
5. If necessary, to change the status of the AWMT-L, use the commands listed in TABLE 11 at
page 38.
NOTE:
At start up the AWMT-L is in the hand-held Terminal Mode. To change to PC
Mode, type ‘t2’ and then press <ENTER>. For operation with the Hand Held
Terminal type ‘t1’.
If the Hand Held Terminal model 8045 is used for the RS-232 communication with the unit, the
adequate configuration should be set. In order to set the configuration:
- While simultaneously pressing the CTRL, SHIFT keys press the F1 key.
- In the menu displayed use F1 key to change parameters, F2 & F3 keys to navigate, F4
key to quit (without changing parameters) and F5 key to save the changed values for
parameters. Type again F4 to exit the menu. The required values for parameters are:
- BAUD RATE: 19200
- DATA BITS: 8
- PARITY: NONE
- STOP BITS: 1
32
AWMT-L
Figure 6: RS-232 HyperTerminal Mode Display (after pressing <ENTER>) single unit
33
AWMT-L
Figure 7: RS-232 HyperTerminal Mode Display (after pressing <ENTER>) redundant system
34
AWMT-L
TABLE 10: RS-232 MENU ITEM DEFINITION
Item
S/N
Soft
Unit Pos
AWMT-L serial number
Version number of the main controller software within the AWMT-L
Indicates the position of the unit A or B. (1:1 redundant system only)
Name
MAC
Current
Indicates the name of the AWMT-L
Indicates the serial address of the AWMT-L main controller (in hex)
Indicates the 12 VDC current consumption of the AWMT-L, in amperes
Temp HS
Hot spot temperature of the unit in degrees Celsius.
Indicates the local oscillator frequency of the transceiver transmission path in
MHz
Indicates the forward power of the transceiver (transmission path output
power) in dBm
TxF Shift
FPWR
TxGain
Tx Stat
CSB
Ref
RxF Shift
LNx Curr
RxGain
Rx Stat
Elaps Time
PS
Faults Alarms
Tx WGSW
Rx WGSW
Description
Indicates the transmission Gain in dB.
Indicates the transmission status (On or Mute).
Cold Standby (ON, or OFF)
Indicates the AUTO internal or external 10 MHz reference
Indicates the local oscillator frequency of the transceiver receive path in MHz.
Indicates the current consumption of the Low Noise Block Down Converter
(LNB) in amperes.
Indicates the receive gain in dB
Indicates the receive status (On or Mute)
Elapsed functioning time
Power Supply DC voltage (in V)
Provides the fault messages and the normal status message:
1.
Alarm: excess +12 VDC current, temperature alarm
2.
Fault: temperature shutdown (ambient temperature exceeds 85ºC),
faulty RF devices, power supply failure, L-RF up-converter module failure,
or LNB Interface Module failure.
3. OK (AWMT-L transceiver is functioning properly).
Transmission Waveguide position (on-line or stand by) – N/A (not applicable)
for single unit)
Receive Waveguide position (on-line or stand by) – N/A (not applicable) for
single unit)
35
AWMT-L
Figure 8: RS-232 HyperTerminal Communication - List of commands (after typing h <ENTER>
for help) – part 1
36
AWMT-L
Figure 9: RS-232 HyperTerminal Communication - List of commands (after typing h <ENTER>
for help) – part 2
37
AWMT-L
NOTE: The shadowed lines in the following table are not applicable for these units.
TABLE 11: COMPUTER TERMINAL COMMANDS FOR RS-232 INTERFACE
Command
h
Description
Help function
Response
Provides the list of commands that can be used to
modify the status of the AWMT.
Provides and refreshes the main menu display on the
computer monitor screen.
<ENTER>
ENTER key of keyboard
alc
Automatic Level Control
alm
Alarms
csb
Cold Standby
If set to ON the standby unit will be in MUTE state
cur
Consumption
dat
Date(d:m:y)
elt
Elapsed Time
Displays the DC current consumption of the AWMT-L.
Current date will be displayed.
(in format day : month : year)
Elapsed functioning time
fbd
Set Kx-Band (K1, K2, K3)
Displays and sets the Kx-Band
flt
Faults
Displays Faults
Displays the forward transmission output power in
dBm.
Sets the ALC level (in dBm)
Displays the ALARMS of the AWMT-L.
(OK if no alarm)
fpw
Forward PW
gns
Gain Levels
Displays/Sets the gain levels
lng
LNB Gain Introduction
The gain read on the LNB is supplied to the system, in order
to compute the overall Rx Gain.
lnv
LNX Voltage (on, off)
Set and displays LNX voltage (on, or off)
lnx
LNX Current
Low power Monitor Time
clear
Displays the current consumption of the LNx in mA.
lpc
Clear the low power monitor
lpm
Low Power Monitor
lpt
ltr
Low Power Monitor Time
Low Power Threshold
Displays and Sets the Low Power Monitor (ON, OFF,
<value>)
Displays and sets the Low Power Monitor Time
Displays and sets the Low Power Threshold value
mac
MAC address
Displays the main controller address.
nam
Set unit name
Allows for a name to be attributed to the AWMT-L.
38
AWMT-L
TABLE 10: COMPUTER TERMINAL COMMANDS FOR RS-232 INTERFACE
(continued)
Command
Description
Response
pdo
Power Detector
Offset
psn
Unit position
rdr
rdt
Set Redundancy
receive
Set Redundancy
transmission
Set an offset for the power detector, so that the detected
power will match the real output power of the unit at
different frequencies (between –3.0 and 2.0 dB)
Displays the position of the AWMT-L in the redundant
system. (A or B, redundant system only)
Set redundancy for receive
Set redundancy for transmission
rfs
Rx freq shift
Displays the frequency of the receiving path Local Oscillator.
rgr
Set Rx Gain Range
Allows for the adjustment of the receive gain of the AWMT
in dB. (Rx gain range: 60 to 80 dB)
rml
Rx MUTE logic
rpw
Reflected Power
Set Rx MUTE logic (normal, reverse). In normal logic, the unit is
mute if the strap on Relay Interface is not installed.
Displays the reflected power
Reset
Resets the M&C
rst
rxg
Displays the status of the Rx Switch for this unit.
(On Line or Stand By, redundant system only)
Allows for the setting of the receiving configuration of the
Set Rx configuration
AWMT-L (LIM, or RFL).
Allows for the adjustment of the receiving gain of the
Set Rx gain
AWMT-L in dB. (Rx gain range 55 to 75 dB)
rxm
Rx Mute
Receiving Mute command. The receive path of the AWMT
is muted. (no IF output power).
rxo
Rx PLL stat
The status of the receive PLL will be displayed.
rxu
Rx Unmute
snb
Serial number
Receiving un-mute command. The receive path of the
AWMT is enabled.
Displays the serial number of the AWMT-L.
sst
System Status
Displays the system status
ssw
Simultaneous switching
Simultaneous switching of Tx and Rx (in redundant systems)
– on, off
stc
Tx start condition
Allows for the setting of the transmission start condition: on, mute,
or the previously set condition
t1
Hand held
PC term
rsw
rxc
t2
Rx Switch
Selects the hand-held Terminal Mode.
Selects the PC Terminal Mode.
39
AWMT-L
TABLE 10: COMPUTER TERMINAL COMMANDS FOR RS-232 INTERFACE
(continued)
Command
Description
Response
tfs
Tx freq shift
Displays the frequency of the transmission path Local Oscillator.
tgr
Set Tx Gain Range
Allows for the adjustment of the transmission gain of the
AWMT in dB. (Tx gain range: 42 to 62 dB)
tll
Tx L-Band Signal
Level
L-Band transmission signal, in dBm
tme
Time(h:m:s)
Current time will be displayed.
(in format hour : minutes : seconds)
tml
Set Tx mute logic
Allows for the setting of the logic of mute command for Tx
(normal, or reversed)
tmp
Temperature
The hot spot temperature of the AWMT-L will be displayed.
tsw
Tx Switch
txg
Set Tx gain
txm
Tx Mute
txo
Tx PLL stat
The status of the transmission PLL will be displayed.
txu
Tx Un-mute
Transmission Un-mute command
ver
S/W Version
Displays the Software version in the AWMT unit
Allows for the switching of the transmission from one unit to
the other. (redundant system only)
Allows for the adjustment of the transmission gain of the
AWMT-L in dB. (Tx gain range: 47 to 67 dB)
Transmission Mute command. The transmission path of the
AWMT-L is muted. (no RF output power)
40
AWMT-L
8.5.2 USING THE RS-485 INTERFACE
In order to use this interface, refer to Section 10 APPENDIX A: RS-485 SERIAL
COMMUNICATION PROTOCOL at page 43.
41
AWMT-L
9. MAINTENANCE
This Section describes the scheduled maintenance procedure for the AWMT-L.
CAUTION!
Improper maintenance of the AWMT-L may void the warranty.
9.1 PREVENTIVE MAINTENANCE
This product requires minimal maintenance, which consists of visual inspection and cleaning.
WARNING! The person performing maintenance of this equipment must have training
and knowledge of both the product and the safety requirements and issues
related to the equipment. Read and practice the safety guidelines in
Section 1 at page 6.
9.2 MECHANICAL PREVENTIVE MAINTENANCE
Mechanical preventive maintenance consists of verifying the condition of all mechanical parts,
with the AC power switched off. Perform the following inspection:
1. Check all connectors and plugs for evidence of damage and improper seating. Replace
defective connector plugs and reset any that are dislodged.
2. Inspect the electrical wiring for signs of discoloured, broken or poor insulation. Repair or
replace if necessary.
3. Inspect all waveguides for discoloration, cracks, loose connectors and improper sealing.
Tighten or replace waveguides as required.
4. Check for other defects such as, wear, breakage, deterioration, fungus, excess moisture and
mounting integrity.
9.3 COOLING FAN CHECK
The AWMT-L is forced-air cooled, using a single fan. The cooling fan is located at the bottom
shroud. Verify that the fan is operating smoothly. Any suspect noise may indicate a worn fan
that must be replaced. Check for debris or dust in the fan intake and in all openings on the unit.
This may reduce the efficiency of the cooling system. The fan should be replaced every two
years, in order to ensure the proper cooling of the AWMT-L.
WARNING! Do not come in contact with any electrical assembly while power is applied.
42
AWMT-L
10. APPENDIX A: RS-485 SERIAL COMMUNICATION PROTOCOL
The protocol described in this Section is used for the interconnection between the AWMT-L and
the user’s monitoring and control system. The protocol supports the 4-wire RS-485 interface
using the communication set-up 9600.N.8.1.
10.1 FRAME STRUCTURE
Each frame starts from start byte – 0x55
After this start byte, each frame consists of 7 bytes described as follows:
•
First byte master–slave – address of the correspondent unit (0x01 to 0x07, address 0x00 –
will be used as broadcast address and must be used only for commands.
•
First byte slave-master – address of the unit, shifted to the left by 4 (e.g. for a unit with
address 0x05, the returned address is 0x50).
•
Second byte master-slave – command or data request.
•
Third, forth and fifth bytes master-slave – value of parameter or expansion of command:
third byte – MS byte, forth byte – LS byte, fifth byte – value after decimal point.
•
From second to sixth bytes slave-master – data or status from slave.
•
Seventh byte master-slave and slave-master - check sum, calculated as algebraic sum of bytes
1-6.
NOTE:
Format for gain, level, current consumption and temperature is a 2-byte
hexadecimal value in 0.1 dB, 0.1 dBm, 0.1 A or 0.1 degree (signed integer).
Format for the LNX current is a 2-byte hexadecimal value in 1 mA steps
(unsigned integer).
Format for frequency is a 2-byte hexadecimal value in 1 MHz steps (unsigned
integer). All unused bytes are always - 0xAA.
10.2 COMMANDS
TABLE 12 at page 44 lists all of the commands that go in the master-slave direction.
NOTE:
If slave does not recognise the command from the master, the response of the
slave is given in TABLE 13 at page 46.
43
AWMT-L
TABLE 12: COMMAND TO TRANSCEIVER
No
Description
2nd
byte
3, 4, 5 & 6 bytes
Response: 2, 3, 4, 5 &
6 bytes
1.
Request condition status
0x2A
0xAA, 0xAA, 0xAA, 0xAA
See TABLE 13
0x02
0x5A – mute Tx
0xA5 – unmute Tx
0x0F – mute Rx
0xF0 – unmute Rx
No answer
2.
3.
Mute/Unmute command
Change address of unit
0x03
0xXX A5 A5 A5
XX – new address of unit
0x5A XX XX XX for Tx
0xA5 XX XX XX for Rx
No answer
4.
Set RF frequency shift
0x06
5.
Read RF frequency set
0x0F
6.
Set RF frequency
0x04
7.
Read identification
0x07
0xAA, 0xAA, 0xAA, 0xAA
See TABLE 14
8.
Read serial number
0x08
0xAA, 0xAA, 0xAA, 0xAA
5 ASCII characters
9.
Read gain set
0x0A
0x5A for Tx
0xA5 for Rx
2 &3 &4 bytes – real
gain
10.
Read shroud temperature.
0x0B
0xAA AA AA AA
11.
Read elapse time
0x0C
AAAAAAAA
12.
Read real gain range
0x0D
0x5A AA AA AA for Tx
0xA5 AA AA AA for Rx
See TABLE 17
13.
Read input/output levels
0x0E
0x5A for Tx
See TABLE 17
14.
Set gain
0x05
0x5A XX XX XX for Tx
0xA5 XX XX XX for Rx
No Response
15.
Read temperature
0x12
0xAA, 0xAA, 0xAA, 0xAA
2, 3 bytes -temperature
16.
LNX current
0x13
0xAA, 0xAA, 0xAA, 0xAA
2,3 bytes –LNX current
17.
DC to LNX on/off
0x17
18.
10 MHz to LNB on/off
0x18
0x5A for Tx
0xA5 for Rx
0x5A XX XX XX for Tx
0xA5 XX XX XX for Rx
0x5A– On
0xA5– Off
0x5A– On
0xA5– Off
See TABLE 13
See TABLE 15
No Response
2, 3 bytes temperature.
2 & 3rd bytes for days,
4th byte for hours.
0xAAAA.
See TABLE 13
See TABLE 13
44
AWMT-L
TABLE 11: COMMAND TO TRANSCEIVER (continued)
No
Description
2nd
byte
19.
Set Tx Redundancy mode
0x1F
20.
Set Rx Redundancy mode
0x20
21.
Read ALC target power
0x21
0xAA AA AA AA
2&3 byte – target
power
See TABLE 13
3, 4, 5 & 6 bytes
0x5A– On
0xA5– Off
0x5A– On
0xA5– Off
Response: 2, 3, 4, 5 &
6 bytes
See TABLE 13
See TABLE 13
22.
Set ALC On/Off
0x22
0x5A AA AA AA– On
0xA5 AA AA AA– Off
0x 55 XX XX AA – Set
0xXX XX– target power
23.
Read unit and switch
position and status
0x23
0xAA, 0xAA, 0xAA, 0xAA
See TABLE 16
24.
Switch WG switches
(redundant system only)
0x24
0x5A – Tx
0xA5 - Rx
No Response
25.
Read forward and reflected
power levels
0x25
0x5A – Tx
0xA5 - Rx
2-3 bytes: FWD
5-6 bytes: REV
26.
Read frequency shift
0x27
0x5A - for Tx
0xA5 - for Rx
See TABLE 15
0xAA AA AA AA
Byte 2: Ref Mode (0Alarm, 1=Internal, 2Auto (Internal), 3External), 6- Auto
(External)
Byte 3-4: Ref Word
27.
Read Reference
0x28
45
AWMT-L
10.3 RESPONSE TO COMMANDS FROM SLAVE TO MASTER
For command 1 (request condition status) the response is given in the following table.
TABLE 13: CONDITION STATUS RESPONSE
Bit
No
0
1
2nd byte
3rd byte
4th byte
5th byte
6th byte
Tx status 1-on, 0-off
1- Tx PLL Alarm
Rx status 1-on, 0-off
1-Rx PLL Alarm
1- Unknown
command
0
1- Tx redundant on
0-Tx redundant off
1- Rx redundant on
0-Rx redundant off
0
2
0
3
Power Class for
P1dB
(power in dBW)
5 bits
From 30dBm – step
1dB
0 dBW = 30 dBm
1 dBW = 31 dBm
…
17 dBW = 47 dBm
4
5
Output
level
MS byte
Output
level
LS byte
Internal
Communication
Status
6
7
0
4-th byte – Internal Communication Status is:
1 – for no communication, 0 – for communication O/K.
Bit 7
Bit 6
N/A
N/A
Bit 5
L-IF
Module
Bit 4
RF-L
Module
Bit 3
PA
Module
Bit 2
IF-L
Module
Bit 1
L-RF
Module
Bit 0
PM
Module
TABLE 14: READ IDENTIFICATION RESPONSE
Bit
No
2nd byte
0
1 – Up
1
1 – Down
2
3
4
5
6
7
1 – PA
0
0
0
0
0
3rd byte
4th byte
1- Rx spectrum inv
0- not Rx spectrum inv
1 – ALC On
0 – ALC Off
0
0
0
0
0
0
0x00 – N/A
0x01 – 70 to L
0x02 – 70 to C
0x03 – 70 to Ku
0x04 – 140 to L
0x05 – 140 to C
0x06 – 140 to Ku
0x07 – L to C
0x08 – L to Ku
5th byte
6th byte
0xAA
Software
version
number
0xXX
46
AWMT-L
TABLE 15: READ FREQUENCY SET RESPONSE
Bit
No
0
1
2
3
4
5
6
7
2nd byte
3rd byte
4th byte
5th byte
6th byte
MS byte
Frequency
LS byte
Frequency
0x5A for Tx
0xA5 for Rx
Value after
decimal point
0xAA
TABLE 16: UNIT STATUS AND POSITION RESPONSE
Bit
No
2nd byte
3rd byte
4th byte
5th byte
6th byte
0
1–B; 0-A
1- Tx alarm;
0-Tx O/K
1- Rx alarm;
0-Rx O/K
1-Tx W/G
switch alarm
1
Tx 1-unmute;
0-mute
1-IF-L alarm
1-L-IF alarm
1- Consumption
current alarm
1- Reflected
power alarm
2
Rx 1-unmute;
0-mute
1-L-RF alarm
1-RF–L alarm
1-Over Drive
Alarm
3
Tx 1- on line
0 – S/B
1-PA temper
alarm
1- LNX
current alarm
0
Rx 1- on line
0 - S/B
1 – Standalone
0 - Redundant
1 – Unit
position error
1-PA devices
alarm
0
1-HPA alarm
0
0
0
1-Summary
temperature
pre alarm
0
4
5
6
7
0
1-ALC Low
Gain is min
1 – ALC High
Gain is max
0
1- P/S out of
range
1-Rx W/G
switch alarm
1 – Tx W/G
switch not
connected
1 – Rx W/G
switch not
connected
0
0
0
0
47
AWMT-L
TABLE 17: READ VALUE RESPONSE
Bit
No
0
1
2
3
4
5
6
7
2nd byte
3rd byte
4th byte
5th byte
6th byte
MS byte
minimum
value
LS byte
minimum
value
0x5A for Tx
0xA5 for Rx
MS byte
maximum
value
LS byte
maximum
value
48
AWMT-L
Figure 10: Proposed Graphical User Interface (GUI) based on RS-485 Protocol – single unit
49
AWMT-L
Figure 11: Proposed Graphical User Interface (GUI) based on RS-485 Protocol – single unit,
with ALC set
50
AWMT-L
11. APPENDIX B: SAFETY AND EMC COMPLIANCE
Advantech Wireless products are compliant with following standards:
SAFETY: IEC 60950-1 second edition 2005
EMC: EN301489-1 2004 (EMC for radio equipment and services, common technical
requirements):
EN 55022: 1998 / A1: 2000 - Class A
EN61000-4-4 Transient/burst 0.5kV Signal Lines, 1 kV Power Lines
EN61000-4-2 Electrostatic discharge 4kV CD, 8 kV AD
EN61000-4-5 Surge 1kV, 0.5 kV
EN61000-4-11 AC port dips 70%, 40%, 0%
EN 61000-4-3 Radiated Immunity 80-1000 MHz @ 3 V/m
SUPPLEMENTARY INFORMATION:
The products herewith comply with the requirements of the Low Voltage Directive 73/23/EEC
and of the EMC Directive 89/336/EEC and may carry the CE-marking accordingly.
51
AWMT-L
12. APPENDIX C: SPECIFICATIONS FOR 50 W L-BAND TO C-BAND
TRANSCEIVERS MODEL AWMT-LC50-CRE P/N 1T0-315310-3B0
The Transceivers specified herein are capable of meeting or exceeding the performance
specifications listed in the following table over frequency range, operating temperature and line
voltage variation, unless otherwise specified. The units will meet all RF performance specifications
within thirty minutes of application of prime power.
Transmitter
TABLE 18: TRANSMITTER SPECIFICATIONS
Specification
Tx Output Frequency
Range
Tx Frequency Step
Adjustment
Conditions
Value/Limits
Tuning Range
5.850 to 6.425 GHz
By software
1 MHz (Not applicable for these units)
Tx Signal Bandwidth
575 MHz
Tx Output Power
P1dB
46 dBm (50 W saturated power)
Tx Gain
Linear mode
67 dB, typ at maximum set gain
Tx Gain Adjustment
By software
20 dB (between 47 and 67 dB, typical)
TX Gain Adjustment Step
0.1 dB
Tx Third Order
Intermodulation
two equal tones, 5 MHz
apart
- 25 dBc, max @ 3 dB back-off total
power
Tx Output VSWR
CPR-137 G
1.22:1 max (-20 dB, max Return Loss)
Tx Gain Flatness
Over 575 MHz
3.0 dB p-p, max
Tx Gain Variation with
temperature
Linear mode
3 dB from –30 °C to +55 °C
±1 dB for ±10 °C
Tx Input Frequency
950 – 1525 MHz
Tx Input Power
–20 dBm, for reaching P1dB @
maximum gain set
Tx Input VSWR
950 – 1525 MHz
1.25:1 min (-19 dB, max Return Loss)
Tx Input Impedance
N-type connector 50 Ω
50 Ω
52
AWMT-L
TABLE 16: TRANSMITTER SPECIFICATIONS (continued)
Specification
Conditions
Value/Limits
Tx Spurious
Signal related, @ rated P1dB
-55 dBc, max
Harmonics
Noise Power Density
(no input signal)
@ rated P1dB
in-band
in Rx band @ 4200 MHz
- 60 dBc, max
-70 dBm/Hz
-155 dBm/Hz
Output Phase Noise
@ offset from carrier:
100 Hz
1 kHz
10 kHz
≥100 kHz
C-Band Single Side Band Phase Noise (max)
- 65 dBc/Hz
- 75 dBc/Hz
- 85 dBc/Hz
- 95 dBc/Hz
EXTERNAL REFERENCE REQUIREMENTS
External Reference Power Level
0 dBm ± 3 dB for single unit
3 dBm ± 3 dB for 1:1 redundant system
External Reference Frequency
10 MHz ± 0.1 Hz (- 30 °C to + 55 °C)
Output Phase Noise
Phase Noise (max)
- 115 dBc/Hz
- 135 dBc/Hz
- 148 dBc/Hz
- 150 dBc/Hz
- 160 dBc/Hz
@ Offset:
10 Hz
100 Hz
1 kHz
10 kHz
≥100 kHz
53
AWMT-L
Receiver
TABLE 19: RECEIVER SPECIFICATIONS
Specification
Conditions
Value/Limits
Rx Input Frequency Range
3.400 to 4.200 GHz
Rx Input Noise Temperature
35 °K typical
Rx Frequency Adjustment Step
1 MHz (Not applicable for these units)
Rx Signal Range
950 - 1750 MHz
Rx Gain
Linear mode
80 dB, typ at maximum set gain
Rx Gain Adjustment
By software
20 dB (between 60 dB and 80 dB)
Rx Gain Adjustment Step
Rx input VSWR
0.1 dB
With TRF & Isolator
(provided by customer)
1.25:1
Rx output frequency
950 - 1750 MHz
Rx output VSWR
1.25:1
Rx output level P1dB
950 - 1750 MHz
0 dBm, typ
Rx Output Impedance
N-type connector 50 Ω
50 Ω
54
AWMT-L
TABLE 20: MECHANICAL SPECIFICATIONS
See Figure 1: Product Outline (C-Band) at page 12 and
Figure 4: Typical Connector Layout (C-Band) at page 20
Physical Dimensions
Approximate Weight
60 lbs (27 kg) each unit
Mounting Requirements
See Figure 1: Product Outline (C-Band) at page 12 and
Figure 4: Typical Connector Layout (C-Band) at page 20
TABLE 21: POWER REQUIREMENTS
Power Requirements
90 – 138 or 180 – 264V AC (autoranging), 47-63 Hz, single phase
Power Consumption
6.75 A typical @ 220V AC (750W) each unit
55