User's Manual

TY91/TY92 VHF Radio Installation Manual 11 April 2012
00839-00 Issue AA
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18 Trig Avionics Limited
proximity in an avionics bay can be degraded if adequate cooling is not
provided.
5.5 TY91/TY92 VHF Radio Electrical Connections
The TY91/TY92 has a single 25 way male socket which provides the audio,
data and power inputs to the VHF radio. A single TNC coaxial connector
attaches to the antenna.
5.5.1 TY91/TY92 Interface – Pinout
Pin
Signal
Direction
1
Speaker Return
-
2
Speaker Out
Output
3
TMAP1A
Bidirectional
4
TMAP1B
Bidirectional
5
RS232 In
Input
6
RS232 Out
Output
7
TMAP2A
Bidirectional
8
TMAP2B
Bidirectional
9
Ground
-
10
Headphone Return
-
11
Headphone Out
Output
12
Controller Power
Output
13
Power ON
Input
14
PTT2 Key
Input
15
PTT1 Key
Input
16
Reserved
-