Walter Dittel FSG 70, Installation & Operation Manual

Page: 25 / 33

FSG 70/FSG 71M
O
PERATION
M
ANUAL
Reprint July 1998 Page
3 - 11
W. Dittel GmbH
+13.75 V or
+27.5 V from
Dimmer or
Panel Light
Switch
Aircraft Speaker
Headphone
Spare
Aircraft GND
Aircraft GND
Power +13.75 VDC
Power +13.75 VDC
Illumination
PTT Key
RX Annunciator
Intercom
AF-External
Carbon Standard Mic
Microphone GND
Dynamic Mic
FSG 70/FSG 71M
Antenna Coax
RG 58 C/U
COM Antenna
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
COM Antenna
+ -
AWG 18
1 mm² red AWG 18
1 mm² blue
Aircraft
Supply
13.75 Vdc
¬¬¬
INTERCOM
Switch
¬
AF-External Input
e.g. NAV, COM2, MKR
* Built-in stick
PTT Key/s
Pilot
Standard Mike
with *PTT Key
1
2
P/N E08639
Headphone
Jack
JJ-034
1
2
1
2
3
Microphone
Jack
JJ-033
P/N E08640
1
2
3
Headphone Plug
PJ-055, P/N E08941
Microphone Plug
PJ-068, P/N E08942
Pilot
Headphone
Copilot
Standard Mike
with *PTT Key
1
2
P/N E08639
Headphone
Jack
JJ-034
1
2
1
2
3
Microphone
Jack
JJ-033
P/N E08640
1
2
3
Headphone Plug
PJ-055, P/N E08941
Microphone Plug
PJ-068, P/N E08942
Copilot
Headphone
Audio OUT to Audio Panel
(as required)
1 or 2 A/C Speaker
4
Ω
to
∞
OFF
ô
ON
470 R
470 R
¬¬
AWG 20
AWG 20
DA-15S
UG 88/U
DA-15S, Soldering Side
NOTES:
DO NOT
wire other pins than noted!
Unless otherwise noted, all wires #22 AWG (0.3 - 0.4 mm²).
Unless otherwise noted, all Power Grounds are airframe grounds.
INTERCOM operation requires a microphone which provides audio OUT with the
PTT key de-energized (not keyed).
INTERCOM operation requires a selector switch, double pole, double throw.
Terminate audio shields at one end only.
Power bus circuit breakers are to be mounted in the A/C breaker panel or
instrument panel such that they will be accessible in flight and safe from physical
damage.
* PTT Key/s either at hand-held microphone/s or installed on the yoke.
¬
Wiring without Intercom: connect A/C speaker direct to pins 11 and 15.
¬¬
If more than one AF source, isolation resistors 470 Ohm shall be installed.
¬¬¬
Fuse 2.5 Amp, semi time lag, or circuit breaker 2.5 Amp.
Fig. 3-9 FSG 70/FSG 71M
Hook-up Diagram
1 - 2 Standard Carbon Microphone/s and INTERCOM