Amplifier Dc Line Reading - ASL INTERCOM VAR4 Operation Manual

18.5.5

Amplifier DC Line Reading

The DC line reading and number of spurs calculated by an amplifier mainframe can be displayed, as
described in the following steps.
1. Select Tests Status.
2. Scroll and select a mainframe from the list:
[Frame#nn - ]
Mainframe: 01 to 63
Note: Only configured mainframes are displayed.
The mainframe description will be shown on the right side of the display, if defined.
3. Move to, scroll, and select an amplifier from the slot list in the left field:
DIP = 000000 Measured [Slot#1]
Slot: 1 to 4
4. Move to, and select the Measured menu item:
Type I/O [Measured]
5. Move to, and select the DC Line menu item:
Surv In Surv Out [DC Line] Earth Leak
6. The DC line reading and the calculated numbers of spurs are displayed:
[DC Line reading= 03130 Spurs=10.5]
Note: A warning message will be displayed if an unused slot is selected.
The automatic updates to the display occur at a slow rate of about every 50 seconds due to the
time taken for the surveillance boards to take these readings.
7. Return to the parent menu by pressing the SELECT key, or the BACK key.
VAR4 / VAR12 / VAR20 - Operation Manual
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