F.u.n.k.e. FSG 90, Installation & Operation Manual

Page: 47 / 81

FSG 90 System
5 SET-UP Procedure
December 2014 FAV_D10024
41
5.4 SET-UP procedure
IMPORTANT!

The settings can be done in any order!

Repeatedly pushing the
MD
button opens the menus step by step.

Only settings confirmed by finally pushing the
STO
key are permanently
stored and effective.

When pushing the
STO
button the upper segment of the On-board supply
indicator will light up to confirm storing visually.
5.4.1 Adjusting the automatic squelch threshold
The display shows in the upper line alternately »SET« and
»SQUEL« , in the lower line »LO« , »MED1« , »MED2« or »HI« .
Adjust by rotating the
F/CH
knob the squelch threshold as required.
The lower line shows:
LO ca. 1.0 µV / -107 dBm (Standard setting)
MED1 ca. 2.5 µV / -99 dBm
MED2 ca. 5.0 µV / -93 dBm
HI ca. 8.0 µV / -89 dBm (this setting exceeds the required
minimum sensitivity; adjust only for test purposes at
very strong interference levels!)

Confirm your adjustment by pushing the
STO
button!

If you want to carry on with the SET-UP procedure push once or
repeatedly the
MD
button till the desired menu appears.
5.4.2 Adjusting the microphone sensitivity (Dynamic or amplified/carbon
microphones)
IMPORTANT!

This adjustment is important particularly when
FSG 90(X)
is used in noisy
environment like turboprop airplanes or vehicles:
Turn your radio OFF (
ON/OFF-VOL
knob fully ccw).
The
FSG 90(X)
should be turned ON only after engine start-up.
Select a free frequency/channel name (no communication audible). Then
call the SET-UP procedure.

During this adjustment the transmitter is keyed. Carry out adjustment
quickly!

Up to two microphones of the same type may be connected parallel to
the mic input (dynamic or amplified/carbon type).

Parallel operated microphones must have the same specifications.

This adjustment has to be repeated when changing microphones (brand,
type or number)