22
8
System function checks
After a handset has been connected to the VHF system, go through the following test procedures to ensure the system is working properly. If
the tests are successful, the VHF system is functioning correctly.
Purpose:
To test correct assembly of the system, ensuring SPARC-bus command communication between all system units – including
system control priorities for the control units – and to check the telephony TX LF and RX LF routing.
Test setup:
Switch all control units on, with all handsets on their rests and each showing VHF display.
8.1
How to check system priorities –
system control and SPARC-bus data interface circuits
If only one control unit is connected, lift the handset and change the channel or push PTT once to ensure the handset is able to control the
system. If more control units are connected, do the following:
Test setup
Result expected
1a
Handset (loc_1):
Handset loc_1: VHF display.
Hook off.
Other control units: oCC display.
oCC
1 “NAME”
1b
Other control units in
Handset loc_1: VHF display.
Hook off.
Other control units: oCC display.
2
All control units:
All control units: VHF display (system idle).
Hook on.
3a
Handset (loc_2):
Handset loc_2: VHF display.
Hook off.
Other control units: oCC display.
3b
Handset (loc_1):
Handset loc_1 or loc_2: VHF display.
Hook off.
Other control units: oCC display.
oCC
2 “NAME”
oCC
1 “NAME”
oCC
1 “NAME”
16
0 08 01
MEM
VOL
SQ
16
0 08 01
MEM
VOL
SQ
16
0 08 01
MEM
VOL
SQ
16
0 08 01
MEM
VOL
SQ
16
0 08 01
MEM
VOL
SQ
Installation - Control Unit
0203
