G900X/G950 Installation and Maintenance Manual – Pinouts
Page A-81
190-00719-00
Revision D
A.10 GRT 10 (optional)
A.10.1 P201
Connector
View of J201 connector from back of unit
1
2
3
4
5
6
7
8
9
Pin
Pin Name
I/O
1
RESERVED
--
2
RS-232 TxD
Out
3
RS-232 RxD
In
4
SIGNAL GROUND
--
5
RESERVED
--
6
RESERVED
--
7
POWER GROUND
--
8
AIRCRAFT POWER
In
9
VOLUME LOCK
In
A.10.2 RS-232
Pin Name
Connector
Pin
I/O
RS-232 TxD
P201
2 Out
RS-232 RxD
P201
3 In
A.10.3 Power
Pin Name
Connector
Pin
I/O
Aircraft Power
P201
8
In
Power Ground
P201
7
In
A.10.4 Volume
Lock
Pin Name
Connector
Pin
I/O
Volume Lock
P201
9
In
The volume lock discrete input is used to disable the volume controls of the GRC 10 remote control.
When this input is active low (i.e. grounded when active, and open otherwise), the volume up, volume
down and mute features of the GRC 10 are disabled; all other features of the GRC 10 remain functional.