Equipment Installation Manual,
GDC31 Roll Steering Converter
1049-2510-01 G.doc
1049-2510-01
Rev G
Page 33 of 47
Figure 1 Typical Interconnect
14V OR 28 VDC BUS
GPS
TX OUT
SHIELD
2A
A+
3
16
GDC31
14
J1
1
<-RS232
SUPER FLAG OUT
25
10
8
6
4
7
HDG
1
5
3
2
GPS
11
12
EXCITATION
HDG ERROR IN
GROUND
AUTOPILOT
HDG ERROR FROM HSI / CDI
POWER COMMON
RX IN
SERIAL COMMON
BAUD SELECT 0
RSS OUTPUT
RSS COMMON
REF1
SWITCH / ANNUNCIATOR
P10280 (28V OR 14V)
REF2
6
AP OFFSET
SIGNAL REFERENCE
EXCITATION
9
21
22
BAUD SELECT 1
GAIN SELECT 0
SUPER FLAG IN
19
18
15
5
GAIN SELECT 1 10
TYPE SELECT
23
PHASE SELECT
13
PROGRAM PIN COMMON
11
1
2
3
4
PROGRAM PINS
GPS INTERFACE
AUTOPILOT INTERFACE
5
6
7
1
SEE TABLE 5
SEE TABLES 1 AND 2
2
SEE TABLE 4
3
SEE TABLE 3
4
FOR EXCITATION VOLTAGES GREATER THAN 15 VOLTS PEAK
5
6
FOR USE WITH AUTOPILOTS THAT USE A SIGNAL REFERENCE
7
SEE TABLES 1 AND 2
FOR EXCITATION VOLTAGES LESS THAN 15 VOLTS PEAK
SEE TABLES 1 AND 2
THAT IS A VOLTAGE ABOVE AIRFRAME COMON, TYPICALLY 5VDC
EXCITATION (15 Vpk to 42 Vpk)
EXCITATION (LESS THAN 15 Vpk)
8
ISOLATION COUPLER IS USED TO TRANSFORMER ISOLATE THE
GDC31 REFERENCE AND / OR OUTPUT FOR INSTALLATIONS WHERE
THESE SIGNALS ARE NOT REFERENCED TO AIRFRAME GROUND.
1049-4801-01
4
13
COUPLER
ISOLATION
12
14
11
2
9
6
10
5
1
3
2:1
2:1
2:1
2:1
LIGHTING VOLTAGE
24
12
GPS LAMP A
GPS LAMP B
