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SECTION 6
OPTIONS
6-14-11 EDACS TRUNKING OPERATIONAL NOTES
This section pr ovides some notes and hints on oper ating the EDACS Tr unking O ption of
the CO M- 120C.
Squelch Setting
The squelch knob setting on the CO M- 120C unit is ver y impor tant for all testing.
While in the EDACS Tr unking Main Scr een with no RF being tr ansmitted into the
CO M- 120C unit, tur n the squelch knob full counter clockwise. The gr een squelch light is
O N. Slowly tur n the knob clockwise until the gr een light just goes off ( make sur e ther e
is no flicker ing) . This setting is valid for all EDACS testing.
Control/Working Channels
If a r adio is having tr ouble locking onto the Repeater Simulator , completing calls or the
Radio Simulator is showing NC, check the pr ogr amming of the Contr ol and/or Wor king
Channels in the Setup menu.
These channels must be valid for the par ticular system
under test.
If the r adio is having tr ouble locking onto the Repeater simulator , check the CH #: field.
This must be set to a valid wor king channel number , it is NO T the Contr ol Channel
number .
Data Generation
If the r adio won't lock onto the Repeater Simulator , won't stay up when being called or
the Radio Simulator is having tr ouble completing calls, check the DATA Mod Sour ce.
The DATA Mod Sour ce must be set for FM Modulation. The r ecommended deviation is
3.2
kHz
( 1.5
kHz
for
nar r ow
band)
with
a
sub- audible
deviation
of
0.70 kHz ( 0.35 kHz for nar r ow band) .
Logical/Group ID
If a r adio can not be called in the Repeater Simulator or can not make a call in the
Radio Simulator , check the G r oup/Logical ID. The G r oup ID must valid for the system
under test.
FM-Zero
If a r adio is having tr ouble completing a G r oup Call ( maybe wor ks 50% of the time) , an
FM- Zer o ( FMZ) oper ation may be necessar y.
Do this in the Automatic Test using F4
FMZ while in the idle state, or FMZ in any manual mode simulator by cur sor ing to the
Deviation field in the left column and pr essing F3 FMZ.
6- 95
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