ADCP-80-347 • Issue 2 • September 2000
DSX-3 Modules Re-Use
Clean and Test Procedures
Content
Page
Revision History ..................................................................... 1
Trademark Information ................................................................ 1
Admonishments ..................................................................... 1
1
RE-USE RECOMMENDATION ............................................................. 2
2
STORAGE.......................................................................... 3
3
OUT-OF-SERVICE MODULE CLEANING ...................................................... 3
4
OUT-OF-SERVICE MODULE TESTING ....................................................... 3
4.1
Continuity Mode ............................................................... 4
4.2
Normal Through Mode ........................................................... 5
4.3
Access OUT Mode .............................................................. 6
4.4
Access IN Mode................................................................ 7
4.5
Monitor Mode ................................................................. 8
4.6
Monitor Shorting Mode ........................................................... 9
4.7
Internal Termination Mode (DS3 X-Conn Input)...........................................10
4.8
Internal Termination Mode (DC OUT Jack) ..............................................11
4.9
Internal Termination Mode (DC IN Jack) ...............................................11
4.10 Monitor DC Test Mode ...........................................................12
4.11 Tracer Lamp Test...............................................................13
5
IN-SERVICE MODULE CLEANING ..........................................................14
6
AIRBORNE CONTAMINATION PREVENTION ...................................................14
7
CUSTOMER INFORMATION AND ASSISTANCE .................................................15
Revision History
ISSUE
DATE
REASON FOR CHANGE
Issue 1
05/1995
Original
Issue 2
09/2000
Updated to reflect change in cleaning procedure.
Trademark Information
ADC and ADC Telecommunications are registered trademarks of ADC Telecommunications, Inc.
Admonishments
Important safety admonishments are used throughout this manual to warn of possible hazards
to persons or equipment. An admonishment identifies a possible hazard and then explains
what may happen if the hazard is not avoided. The admonishments — in the form of Dangers,
Warnings, and Cautions — must be followed at all times. These warnings are flagged by use
of the triangular alert icon (seen below), and are listed in descending order of severity of
injury or damage and likelihood of occurrence.
1076821 Rev A
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 2000, ADC Telecommunications, Inc.
ADCP-80-347 • Issue 2 • September 2000
Danger: Danger is used to indicate the presence of a hazard that will cause severe personal
injury, death, or substantial property damage if the hazard is not avoided.
Warning: Warning is used to indicate the presence of a hazard that can cause severe
personal injury, death, or substantial property damage if the hazard is not avoided.
Caution: Caution is used to indicate the presence of a hazard that will or can cause minor
personal injury or property damage if the hazard is not avoided.
1
RE-USE RECOMMENDATION
These procedures apply to ADC’s DSX-3 4H and 4M type modules. The modules have
different physical appearances, as shown in Figure 1. However, the front and rear connections
are the same for both type modules. The procedural figures throughout this document are
shown as the 4M type module. An accessory kit (Catalog # ACK-TST-DS3 ordered
separately) contains test cords, plugs and connectors necessary to perform all test procedures.
ACK-TST-DS3 Kit Contents
ITEM
QUANTITY
Patch Cord–BNC to Midsize–4.0 feet
2
Patch Cord–BNC to BNC–1.0 feet
1
Patch Cord–Midsoze to Midsize– 4.0 feet
1
Patch Cord–BNC to two Banana Plugs–4.0 feet
1
Patch Cord–Midsize to two Banana Plugs–4.0 feet
1
Patch Cord–Midsize to one Banana Plugs–4.0 feet
1
Midsize Plug–Shorting–0 ohm
1
Midsize Plug–Open–∞ ohm
1
BNC Connector–75 ohm Termination
1
6385-A
DSX-4M
DSX-4H
Figure 1
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 2000, ADC Telecommunications, Inc.
ADCP-80-347 • Issue 2 • September 2000
DSX-3 modules that pass the test procedures may be placed back into service. If a module
fails any of the outlined test procedures, return the module to ADC for repair as outlined in the
warranty handbook (ADCP-40-005). Enclose a trouble tag identifying any customer observed
failures.
2
STORAGE
Modules that are removed from service and taken out of their rack mounted chassis should be
stored in the original module shipping carton. If the original shipping carton is not available,
the module should be placed in a container that will protect from contaminates and physical
damage. Any module in storage that is not protected by a container should have circuit plugs
placed in all jacks. Modules that are taken out of service and left in the chassis should have
circuit guard plugs placed in all jacks. Store modules in environmental conditions as follows:
• Temperature: –55°C to +85°C
• Humidity: 0% to +95% without condensation
3
OUT-OF-SERVICE MODULE CLEANING
Warning: The following procedures should not be performed on DSX-3 modules or any jacks
that are connected to active equipment. Service interruption will occur to modules that are
carrying live traffic.
Before an out-of-service module is to be placed back into service, it is recommended to
perform clean and test procedures.
Clean the jacks by inserting and removing a compatible patch cord plug into each jack a
minimum of 7 times. The internal wiping action of the switching jack will self clean the
contact area within the jack.
4
OUT-OF-SERVICE MODULE TESTING
Examine modules for any visual defects of the BNC connectors, jacks, wiring, front panel,
and sheet metal structure.
Warning: Do not use test probes for the following test connections. Use the appropriate
connection interface for each type of connection. Use BNC connector, TNC connector, Midsize plug, or Standard-size plugs for each appropriate connection to modules. Test probes
may deform internal connection contacts.
Using a DS3 transmission test set, compare the receive signal to the transmit signal, for the
following electrical integrity tests.
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© 2000, ADC Telecommunications, Inc.
ADCP-80-347 • Issue 2 • September 2000
4.1 Continuity Mode
Connect test set and cross-connect jumper to module per Figure 2.
Send an all ones pattern from the test set (receive port set for DSX-3, terminate mode). Gently
wiggle test cords to verify the integrity of the test set up and rear connections. If errors are
detected, replace suspect test cords and repeat test. Upon retest, if errors are detected, the
module has failed.
Insert an ∞ ohm termination (open plug) to the IN and OUT jacks seven times each. Each time
the plug is inserted to the jack, signal loss should be detected. Each time the plug is removed
from the jack, the signal should be restored.
DS-3 TRANSMISSION TEST SET
TRANSMIT
RECEIVE
XO
OUT JACK
∞ OHMS
XI
OUT
IN JACK
IN
5813-D
Figure 2
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 2000, ADC Telecommunications, Inc.
ADCP-80-347 • Issue 2 • September 2000
4.2 Normal Through Mode
Connect test set and cross-connect jumper to module per Figure 3.
While sending an all ones pattern from the test set (receive port set for DSX-3, terminate
mode). Lightly tap on the side of each jack (with nondestructive force) a minimum of three
times with the handle of a screwdriver, trying to induce errors. If any errors are received at the
test set, the module has failed.
DS-3 TRANSMISSION TEST SET
RECEIVE
TRANSMIT
XO
OUT JACK
XI
OUT
IN
IN JACK
5816-D
Figure 3
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© 2000, ADC Telecommunications, Inc.
ADCP-80-347 • Issue 2 • September 2000
4.3 Access OUT Mode
Connect test set and cross-connect jumper to module per Figure 4.
Send an all ones pattern from the test set (receive port set for DSX-3, terminate mode). If any
errors are received at the test set, the module has failed.
DS-3 TRANSMISSION TEST SET
RECEIVE
TRANSMIT
OUT JACK
OUT
5817-D
Figure 4
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 2000, ADC Telecommunications, Inc.
ADCP-80-347 • Issue 2 • September 2000
4.4 Access IN Mode
Connect test set to module per Figure 5.
Send an all ones pattern from the test set (receive port set for DSX-3, terminate mode). If any
errors are received at the test set, the module has failed.
DS-3 TRANSMISSION TEST SET
RECEIVE
TRANSMIT
IN JACK
IN
5818-D
Figure 5
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© 2000, ADC Telecommunications, Inc.
ADCP-80-347 • Issue 2 • September 2000
4.5 Monitor Mode
Connect test set and cross-connect jumper to module per Figure 6.
With a 75 ohm termination connector placed on the rear IN (I) connector, send an all ones
pattern from the test set (receive port set for Low, Monitor mode). If any errors are received at
the test set, the module has failed.
DS-3 TRANSMISSION TEST SET
RECEIVE
TRANSMIT
XO
MON JACK
XI
OUT
75 Ω
TERMINATION
IN
5819-D
Figure 6
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 2000, ADC Telecommunications, Inc.
ADCP-80-347 • Issue 2 • September 2000
4.6 Monitor Shorting Mode
Connect test set and cross-connect jumper to module per Figure 7.
With a 0 ohm termination plug (shorting plug) in the monitor jack, send an all ones pattern
from the test set (receive port set for DSX-3, terminate mode). If any errors are received at the
test set, the module has failed.
DS-3 TRANSMISSION TEST SET
RECEIVE
TRANSMIT
XO
MON JACK
∅Ω
XI
OUT
IN
5820-D
Figure 7
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© 2000, ADC Telecommunications, Inc.
ADCP-80-347 • Issue 2 • September 2000
4.7 Internal Termination Mode (DS3 X-Conn Input)
Connect test set and cross-connect jumper to module per Figure 8.
With an ∞ ohm termination (open plug) in the IN jack, send an all ones pattern from the test
set (receive port set for Low, Monitor mode). If any errors are received at the test set, the
module has failed.
DS-3 TRANSMISSION TEST SET
RECEIVE
TRANSMIT
XO
MON JACK
XI
OUT
IN JACK
∞Ω
5821-D
Figure 8
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 2000, ADC Telecommunications, Inc.
ADCP-80-347 • Issue 2 • September 2000
4.8 Internal Termination Mode (DC OUT Jack)
Connect DC resistive test set (ohm meter) per Figure 9.
With an ∞ ohm termination (open plug) in the OUT jack, test resistance between the center
pin contact and the connector shell at the cross-connect OUT (XO) BNC connector. The
measurement shall be 75 ohms ± 5% (4 ohms).
XO
DC RESISTANCE
TEST SET
OUT JACK
∞Ω
(+)
(–)
5822-C
Figure 9
4.9 Internal Termination Mode (DC IN Jack)
Connect DC resistive test set (ohm meter) per Figure 10.
With an ∞ ohm termination (open plug) in the IN jack, test resistance between the center pin
contact and the connector shell at the cross-connect IN (XI) BNC connector. The
measurement shall be 75 ohms ± 5% (4 ohms).
DC RESISTANCE
TEST SET
(+)
XI
IN JACK
(–)
∞Ω
5823-D
Figure 10
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© 2000, ADC Telecommunications, Inc.
ADCP-80-347 • Issue 2 • September 2000
4.10 Monitor DC Test Mode
Connect DC resistive test set (ohm meter) per Figure 11.
Test resistance between the MONITOR jack center pin contact and the jack sleeve. The
measurement shall be 93 ohms ± 5% (5 ohms).
Connect DC resistive test set (ohm meter) per Figure 12.
Test resistance between the OUT jack center pin contact and the jack sleeve. The measurement shall be 557 ohms ± 5% (28 ohms).
Connect DC resistive test set (ohm meter) per Figure 13.
Test resistance between the OUT jack center pin contact and the MONITOR jack center pin
contact. The measurement shall be 464 ohms ± 5% (24 ohms).
MON JACK
DC RESISTANCE
TEST SET
(+)
(–)
5824-C
Figure 11
DC RESISTANCE
TEST SET
OUT JACK
(+)
(–)
5825-C
Figure 12
MON JACK
DC RESISTANCE
TEST SET
OUT JACK
(+)
(–)
5826-C
Figure 13
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 2000, ADC Telecommunications, Inc.
ADCP-80-347 • Issue 2 • September 2000
4.11 Tracer Lamp Test
Tracer lamps (LED) shall be verified by supplying -48 VDC (22 mA max.) to the module (see
Figure 14). The lamp switch shall be pulled out, completing the circuit. The LED shall flash
for no more than 60 seconds and then remain lit. Flashing for more than 60 seconds, not
remaining lit, or failure to light, constitutes a failure.
The DSX-3 module schematic is shown for reference in Figure 15.
-48V
TRACER LAMP
-48V RED
7.7 MA
FLASHING LED
GROUND
LAMP SWITCH
TRACER LAMP
PIN JACKS
5827-B
Figure 14
MON
XO
XI
R1
R3
OUT
R2
O
R2
IN
I
R1 = 93 Ω
R2 = 75 Ω
R3 = 464 Ω
5828-A
Figure 15
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© 2000, ADC Telecommunications, Inc.
ADCP-80-347 • Issue 2 • September 2000
5
IN-SERVICE MODULE CLEANING
Warning: Do not insert patch cord plugs into the IN or OUT jacks while cleaning. This will
cause service outage if live traffic is present. Do not insert any foreign objects (other than the
intended patch cord plugs for test or patching) into the jacks, as this may cause a service outage.
Warning: Never spray any chemical cleaner into jacks, as the chemical will contaminate the
contact surfaces.
Using a vacuum cleaner, hold the intake hose to the front of each jack to suck out any debris
from the jack.
6
AIRBORNE CONTAMINATION PREVENTION
When DSX-3 modules are placed in environments that are prone to dust and airborne debris
the jacks should be protected by placing a plastic circuit guard plug into each jack hole. When
access to the jack is desired, the circuit guard plug may be removed. When access is
completed, replace the circuit guard plug into the jack hole.
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 2000, ADC Telecommunications, Inc.
ADCP-80-347 • Issue 2 • September 2000
7
CUSTOMER INFORMATION AND ASSISTANCE
For customers wanting information on ADC products or help in using them, ADC offers the
services listed below. To obtain any of these services by telephone, first dial the central ADC
telephone number, then dial the extension provided below.
The central number for calls originating in the U.S.A. or Canada is 1-800-366-3891. For calls
originating outside the U.S.A. or Canada, dial country code “1” then dial 952-946-3000.
Sales Assistance
Extension 63000
• Quotation Proposals
• Ordering and Delivery
• General Product Information
Systems Integration
Extension 63000
•
•
•
•
•
•
•
Complete Solutions (from Concept to Installation)
Network Design and Integration Testing
System Turn-Up and Testing
Network Monitoring (Upstream or Downstream)
Power Monitoring and Remote Surveillance
Service/Maintenance Agreements
Systems Operation
BCG Technical Assistance Center
Extension 63475
E-Mail: technical@adc.com
•
•
•
•
•
•
Technical Information
System/Network Configuration
Product Specification and Application
Training (Product-Specific)
Installation and Operation Assistance
Troubleshooting and Repair
Product Return Department
Extension 63748
E-Mail: repair&return@adc.com
• ADC Return Authorization number and instructions must
be obtained before returning products.
Product information may also be obtained using the ADC web site at www.adc.com or by
writing ADC Telecommunications, Inc., P.O. Box 1101, Minneapolis, MN 55440-1101, U.S.A.
Contents herein are current as of the date of publication. ADC reserves the right to change the contents without prior notice. In
no event shall ADC be liable for any damages resulting from loss of data, loss of use, or loss of profits and ADC further
disclaims any and all liability for indirect, incidental, special, consequential or other similar damages. This disclaimer of
liability applies to all products, publications and services during and after the warranty period.
This publication may be verified at any time by contacting ADC’s Technical Assistance Center at 1-800-366-3891, extension
63475 (in U.S.A. or Canada) or 952-946-3000 (outside U.S.A. and Canada), or by writing to ADC Telecommunications, Inc.,
Attn: Technical Assistance Center, Mail Station #71, P.O. Box 1101, Minneapolis, MN 55440-1101, U.S.A.
© 2000, ADC Telecommunications, Inc.
All Rights Reserved
Printed in U.S.A.
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