
Chapter 4 Troubleshooting and Diagnostics Installation and Operation Manual
4-6 Setting Loopback and BER Tests ASM-40CD Ver. 1.0
MODEM DIAGNOSTIC
MODEM NAME : ASM-40CD(m)
DEFINE MODEM PORT NUMBER : 1
MODEM STATUS : MASTER PERMANENT
SELECT MODEM : MODEM 1 LOCAL
LOOP & BERT : CANCEL LOOP TIMEOUT: N/A
REMOTE DIG ENABLE : ENABLE
BERT RESULTS : 0.0 E- 00
LED TEST : OFF
LOCAL LOOP BACK : DISABLE
REMOTE LOOP BACK : DISABLE
REMOTE DIG : OFF
ENABLE TEST FROM REM MODEM : N/A
BERT ERR INJECTION : N/A
Figure 4-5. Modem Diagnostic Screen
Bolded rows in
Figure 4-5
indicate fields applicable to ASM-40CD and standalone
modems. Additional, non-bolded parameters listed on a screen apply to other
modems installed in the LRS-24 hub (see
Table 4-1
).
Running a test automatically cancels a previous set of tests. For details regarding
loopback definitions and BER tests, refer to Section
4.1 and Section 4.2
respectively.
Table 4-1. Modem Diagnostic Menu Parameters
Parameter Type Function Option Option Indicates:
MODEM NAME Read Identifying the modem type
whose status is being viewed
or modified
ASM-40CD(M) Master ASM-40CD
MODEM
STATUS
Read Checking whether loopback
and BER tests can be invoked
from this screen
Master
Permanent
Modem controls its own test
routines, which can be invoked
from this screen
SELECT MODEM
Write Selecting the test
transmission path in
conjunction with one of the
loopback fields
Modem 1
Local
Modem 2
Local
Loopback connection is set
relative to modem 1 or 2 of the
card installed in the LRS-24 hub
ANA Local loopback is set in the local
unit
LOOP & BERT Write Activating a specific loopback
or BER testing
REM Remote loopback is set in the
remote unit
ANA+ BERT Local loopback is set in the local
unit and enable the pattern
generator and the pattern tester
of the built-in BERT circuit
REM+ BERT Remote loopback is set in the
remote unit and enables the
built-in BERT circuit
Note
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