2-16
UAS 7001 NIU
GDC 087R706-000-02
The Diagnostic procedure involves the following steps:
1.
From the Main Menu, select the Diagnostics screen by typing
2
and pressing the Enter key.
2.
To select the loopback to be performed, type 1 and press the Enter key. Highlighting ap-
pears on the Loopback Mode setting field.
3.
Use the arrow keys to toggle the highlighted field through its potential settings:
No Loop-
back
,
Line Loopback
, and
Payload Loopback
.
No Loopback
is the inactive
setting.
4.
When the field displays the desired setting, press the Enter key. The highlighting disap-
pears and the field displays the new setting.
If you intend to let the loopback run until you end it manually, go to step 8.
5.
To select how long the loopback is to remain in effect, type
2
and press the Enter key. High-
lighting appears on the Test Time Limit setting field.
6.
Use the arrow keys to toggle the highlighted field through its potential settings. The
No
Limit
setting is both the idle condition for this field and a functional setting that causes
the loopback to remain in effect until ended manually.
7.
When the field displays the desired setting, press the Enter key. The highlighting disap-
pears and the field displays the new setting.
8.
To start the loopback, type S (Save) and press the Enter key.
In response, the screen prompts for confirmation:
*WARNING - SAVING DISRUPTS COMMUNICATIONS Continue? [ ] Y(es), N(o)
9.
To perform the loopback type
Y
and press the Enter key; to abort the loopback type
N
and
press the Enter key.
If you continue, the word
SAVING
appears at the bottom of the screen. When it disappears
the loopback is in effect. The loopback continues until its configured time limit is reached
or until you end it manually; see step 10.
The screen refreshes every 30 seconds while a loopback is in effect; you may see it flicker
when a refresh occurs. When a loopback reaches its configured time limit and ends, the
fields automatically return to their default values.
10.
To end a loopback manually: type
1
and press the Enter key; toggle the highlighted Loop-
back Mode field to
No Loopback
and press the Enter key; save the setting as described
in steps 8 and 9. When the save is complete, the fields display their default values.
You can end a test manually before it reaches a configured time limit that would end it
automatically.
11.
When you’re done with the Diagnostics screen, type
0
and press the Enter key to return to
the Main Menu.
