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COMSPHERE 3900 Series Modems
3-46 November 1996 3910-A2-GN32-30
Test Branch
The Test branch of the T
op-Level menu allows you to initiate various modem tests. Use these tests
if you are having data communication problems, such as periodic character loss, random errors, or
constant format errors. By the process of elimination, you can usually isolate the fault in your
system.
There are six selections under Test: Abort, Self (Self-Test), Loc Analog Loop (Local Analog
Loopback), Rem Digital Loop (Remote Digital Loopback), Loc Digital Loop (Local Digital
Loopback), and Pattern. The only tests that can operate concurrently on a single modem are Pattern
with a Local Analog Loopback and Pattern with a Remote Digital Loopback. If any test is
operating, besides the two combinations just mentioned, it must be canceled before starting another
test.
The T
est branch only initiates and cancels tests. If any parameters need to be set, refer to the
Test
section discussed in Chapter 4,
DCP Configuration
.
Test
“Status”
Status Configure PList Control
SubHS
Call_Setup Tlk/Data Security Remote
Abort Self Loc_Analog_Loop Rem_Digital_Loop Loc_Digital_Loop Pattern
T
o access the T
est branch from the Top-Level menu, make the following selections:
F1
Leased:19.2
Control Test
F2
F3
Press the
key until T
est appears. Select T
est.
Abort
Abort ends any test that is in progress and brings the modem back to the normal mode of
operation. Confirmation is provided by the Command Complete
message.