6-Testing & Troubleshooting
ACS-160 Series & STL-160 Series T1 Mux Installation & Operation
Version 2.11, August 2011
Harris Corporation
6-9
Intraplex Products
6.4 System Check-Out Procedures
These general procedural guides help you test a newly installed ACS-160 system prior to bringing the
system on line. (If you are using a redundant CM-5RB module, remove the inactive module for this
test.)
1.
Start testing at the master timing location (that is, at the terminal multiplexer that is internally or
externally timed). If both terminal multiplexers are loop-timed, start at either end.
2.
In a drop and insert system, check out locations in the order in which they appear in the system.
3.
Test each location locally before performing system tests. Use the procedure in Section 6.4.1 for
terminal multiplexers and the procedure in Section 6.4.2 for drop and insert multiplexers.
4.
After performing the system-level tests described in this section, you might also wish to test the
individual circuits formed by the channel modules in the multiplexers. The individual channel
module manuals give recommended test procedures for each type of circuit.
If these procedures do not produce the desired test results, Section 6.6 gives troubleshooting tips.
6.4.1
Terminal Multiplexer Testing
Use this procedure to check out a terminal multiplexer (ACS-163 or ACS-167) or for each CM-5RB
module on a dual multiplexer (ACS-166 or ACS-169). This procedure assumes that the multiplexer is
already installed, wired, and powered but is not yet in service. (If you are using a redundant CM-5RB
module, remove the inactive module for this test.)
1.
To verify that the CM-5RB module is in the TERM mode, perform these steps:
a.
Remove the active CM-5RB module for a few seconds.
b.
Re-insert it.
c.
Observe whether the active module displays TERM. If it does, go to Step 2. If it does not,
check and, if necessary, correct the mode switch settings on the MA-215 module adapter at
the rear of the shelf (Section 4.2 –
CM-5RB Basic Configuration Group Menu
).
2.
To set the CM-5RB transmitter timing to use its internal timing oscillator for testing, perform these
steps:
a.
Press down repeatedly on the GROUP switch until the display shows TIME.
b.
Press down on the SET/NEXT switch several times until the display shows INT.
c.
If the green (top) light next to the display turns on, timing is already set to internal. Proceed
to Step 3.
d.
If the green light does not turn on, press up on the SET/NEXT switch twice to change the
timing setting to internal. The green light should now be on.
3.
To verify that T1 frame format and line code are set correctly for the T1 service available, perform
these steps:
Note:
Always use ESF framing and B8ZS line code unless your CSU or T1 service provider cannot
support them.
a.
Press down on the GROUP switch until the display shows TSEL.
b.
Press down on the SET/NEXT switch until the display shows the desired frame format (SF or
ESF). If the green (top) light is on, this frame format is selected.
c.
If the green light is off, press up twice on the SET / NEXT switch to select this format.
d.
Press down on the SET/ NEXT switch to display the desired line code (B8ZS or AMI). If the
green light is on, line code is set to the displayed value.
e.
If the green light is off, press up twice on the SET/ NEXT switch to change the line code to the
displayed value.
4.
Disconnect the T1 input/output connector (RJ-48C) from the MA-215 module adapter at the rear
of the CM-5RB module (or the DB-15 from the MA-216 adapter).
5.
Establish a local T1 loopback in one of two ways:
Содержание ACS-163
Страница 4: ...This page is left blank intentionally...
Страница 12: ...No header here viii Harris Corporation Intraplex Products This page is left blank intentionally...
Страница 52: ...No header 2 30 Harris Corporation Intraplex Products This page is left blank intentionally...
Страница 98: ...No header here 4 24 Harris Corporation Intraplex Products This page is left blank intentionally...
Страница 144: ...No header 5 46 Harris Corporation Intraplex Products This page is left blank intentionally...
Страница 166: ...No header 6 22 Harris Corporation Intraplex Products This page is left blank intentionally...
Страница 172: ...No header 7 6 Harris Corporation Intraplex Products This page is left blank intentionally...