25
6
Handset (loc_2):
All control units: VHF display (sys idle).
Hook on (all on hook)
8.3
How to check TX transmitter –
handset TX AF circuits and VHF transmitter
For this test, transmitter power level must be 25W (that is, the 1W indicator lamp will not be lit). If the VHF transmitter fails, the 1W indicator
lamp will go on when the PTT button is pressed and/or the display will show the error message ANTN FAIL. In this event, check that the aerial
and aerial cable are connected correctly.
Test setup
Result expected
1
Handset (loc_1):
Handset (loc_1): VHF display.
Hook off.
Other control units: oCC display.
2
Handset (loc_1):
Handset (loc_1): VHF display.
Press PTT.
TX indicator lamp is lit.
Other control units: oCC display.
3
Handset (loc_1):
Handset (loc_1): VHF display
Release PTT.
TX indicator lamp turns off.
Other control units: oCC display.
4
Handset loc_(1):
All control units: VHF display (system idle).
Hook on.
67
0 08 01
MEM
VOL
SQ
67
0 08 01
oCC
1 “NAME”
67
8 08 01
MEM
VOL
SQ
oCC
1 “NAME”
67
0 08 01
MEM
VOL
SQ
oCC
1 “NAME”
MEM
VOL
SQ
16
0 08 01
MEM
VOL
SQ
Installation - Control Unit
0238