Garmin GTR 200 GTR 200 Installation Manual - Page 47

Serial Data – RS-232, 4.5 Aux Mono Audio, NMEA Format

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4.4 Serial Data - RS-232 Section 4.4.1.1 and Section 4.4.2 detail the formats that can be selected for the RS-232 channel. Pin Name Pin I/O RS-232 IN 24 In RS-232 OUT 23 Out 4.4.1 NMEA Format 4.4.1.1 Legacy NMEA Support The GTR 200 maintains backwards compatibility with legacy SL30/SL40 NMEA commands ($PMMRC and $PMMRV) as they apply to GTR 200 functionality. Refer to Appendix B. The following legacy SL30/40 input commands are supported as-is: • Set active COM frequency (SL30 version) • Set active frequency and transceiver function (SL40 version) • Set standby COM frequency. (SL30 version) • Set standby frequency and transceiver function. (SL40 version) • Squelch Override On/Off • Remote Ident Input • Remote Frequency List Input 4.4.2 MIC Audio PILOT MIC IN and COPILOT MIC IN are standard carbon or dynamic MIC inputs with integrated preamps providing minimum 20 mVrms into a 150 Ω AC load. PILOT MIC IN and COPILOT MIC IN are set in the factory so that 150 mVrms modulates the transmitter to 90% nominally at 1000 Hz. The microphone gain adjustment is made through Configuration Mode. Pin Name Pin I/O PILOT MIC IN 17 In PILOT MIC LO 36 -- COPILOT MIC IN 16 In COPILOT MIC LO 34 -- 4.5 Aux Mono Audio Auxiliary audio mono audio inputs have a nominal input impedance of 600 Ω, max. rated input level is 5 Vrms. Pin Name Pin I/O AUX MONO IN 1 32 In AUX 1 LO 31 -- AUX MONO IN 2 9 In AUX 2 LO 28 -- 190-01553-00 Rev. A GTR 200 Installation Manual Page 4-3

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190-01553-00
GTR 200 Installation Manual
Rev. A
Page 4-3
4.4
Serial Data – RS-232
Section 4.4.1.1 and Section 4.4.2 detail the formats that can be selected for the RS-232 channel.
4.4.1
NMEA Format
4.4.1.1
Legacy NMEA Support
The GTR 200 maintains backwards compatibility with legacy SL30/SL40 NMEA commands ($PMMRC
and $PMMRV) as they apply to GTR 200 functionality. Refer to
Appendix B
.
The following legacy SL30/40 input commands are supported as-is:
•
Set active COM frequency (SL30 version)
•
Set active frequency and transceiver function (SL40 version)
•
Set standby COM frequency. (SL30 version)
•
Set standby frequency and transceiver function. (SL40 version)
•
Squelch Override On/Off
•
Remote Ident Input
•
Remote Frequency List Input
4.4.2
MIC Audio
PILOT MIC IN and COPILOT MIC IN are standard carbon or dynamic MIC inputs with integrated
preamps providing minimum 20 mVrms into a 150
Ω
AC load.
PILOT MIC IN and COPILOT MIC IN are set in the factory so that 150 mVrms modulates the transmitter
to 90% nominally at 1000 Hz.
The microphone gain adjustment is made through Configuration Mode.
4.5
Aux Mono Audio
Auxiliary audio mono audio inputs have a nominal input impedance of 600
Ω
, max. rated input level is
5 Vrms.
Pin Name
Pin
I/O
RS-232 IN
24
In
RS-232 OUT
23
Out
Pin Name
Pin
I/O
PILOT MIC IN
17
In
PILOT MIC LO
36
--
COPILOT MIC IN
16
In
COPILOT MIC LO
34
--
Pin Name
Pin
I/O
AUX MONO IN 1
32
In
AUX 1 LO
31
--
AUX MONO IN 2
9
In
AUX 2 LO
28
--