Technical Manual

10-2 GUARDIAN VHF MOBILE
10.2 Power Connector Pins and Functions
Pin Signal Name Description
1 BATTERY Battery power
2 GROUND Ground
3 IGN_SW Ignition switch
4 EXTERNAL_10W_SPEAKER_N External speaker
5 EXTERNAL+10W_SPEAKER_P External speaker
6 BATTERY Battery power
7 GROUND Ground
8 GROUND Ground
9 EMERGENCY_SWITCH Emergency switch
10.3 Microphone Jack Connector Pins and Functions
Pin Signal Name Description
1 EXTERNAL_MIC_BIAS/KEY Keyload line
2 GROUND Ground
3 INTERNAL_MIC Microphone audio
4 EXTERNAL_MIC/WE Keyload line
5 PTT_SWITCH Push-to-talk line
6 BIAS(+) Microphone power
7 EXTERNAL_SPEAKER_P/KLD Keyload line
8 EXTERNAL_PTT/K1D Keyload line