User`s manual

Testing
To initiate a local loopback test, do the following:
1. At the CMD: prompt, type test local on your data terminal. The ADM
displays:
LOCAL LOOPBACK TEST
ENTER ATTENTION SEQUENCE TO END TEST
2. Type characters on your terminal keyboard. They will be echoed on your
screen.
If you find no errors, the ADM passed the test.
If you find errors, refer to Chapter 6, ‘‘Troubleshooting.’’
3. Rapidly type the Attention sequence (default value is +++) to end the test.
The ADM displays:
LOCAL LOOPBACK TEST ENDED
ADM
S
w
i
t
c
h
Local DTE
Characters
Received
Receiver
Transmitter
Characters
Sent
Figure 5-1. Local Loopback Test
5-2