FSG 90F System
3. Installation
November 2000
Page
17
W. Dittel GmbH
Section 3
Installation
3.1
General
This section contains instructions and suggestions to be considered before installing the
radio
FSG 90F(X)
into an aircraft. Close adherence to these suggestions will assure
more satisfactory performance from the equipment.
Information in this section are intended for certified avionics shops only. Work such as
installation, wiring and testing should only be carried out by a qualified technician!
IMPORTANT!
•
If installation into an aircraft is made by other than a certified avionics
shop, you have to consult your responsible aircraft Avionics inspector -
before the installation – to get authorized certification of your completed
installation.
•
The conditions and tests required for
FAA-TSO
approval of this article
are minimum performance standards. It is the responsibility of those
desiring to install this article either on or within a specific type or class of
aircraft to determine that the aircraft installation conditions are within the
FAA-TSO
standards. If not within the
FAA-TSO
standards, the article
may be installed only if further evaluation by the applicant documents an
acceptable installation and is approved by the Administrator.
3.2
Unpacking and Inspecting Equipment
Unpack the equipment carefully and inspect each item for evidence of damage incurred
during shipment.
FSG 90F
model number and serial number must comply with relevant
details mentioned in Airworthiness Approval Tag and delivery note details attached to
the shipment.
If a damage claim must be filed, save the shipping container and all packing materials to
substantiate your claim. The claim should be filed with the transportation company as
soon as possible.
If a damage is noted after the first test, notify the transportation company in writing with
advance phone or fax advice about hidden transport damage.
A copy of such a claim including all information from the type label is to be forwarded
without delay also to
Walter Dittel GmbH
.
3.3
Pre-installation Test
Before installing the radio into an aircraft or vehicle, a short but comprehensive
functional test by a certified avionics shop is recommended.
a) Interconnect the radio with a test wiring harness (according to figure 3-1) to the test
bench setup. For
FSG 90F
set supply to 13.8 Vdc at radio input terminals. For
FSG 90F-H1
set supply to 14.0 Vdc at radio input terminals. Turn ON the radio with
the
ON/OFF/VOL
switch on front panel. Switch OFF the Squelch (push
SQ
button).
b) In receive mode set the VOL control to mid position. On all channels within 118 ...
136.975 MHz, almost identical, strong, continuous acoustic noise must be audible.
c) Receiver sensitivity on all channels must comply with technical data (make sensitivity
tests to cover the whole frequency range).
d) Switch ON the Squelch (push
SQ
button again). The squelch threshold (depending on
SET-UP presetting) shall be within 0.5 µV and 5 µV / 50 Ohms (vary signal generator
output level).