Icom VE-PG3 Instruction Manual - Page 320

8 FOR YOUR INFORMATION 4. Specifications (continued) M Port details [TRX2] port A1~A4 B1~B4 C1~C4 A1~A4 B1~B4 C1~C4 A1~A4 B1~B4 C1~C4 A1~A4 B1~B4 C1~C4 [TRX1] port [TRX1]/[TRX2] port Pin No. Description A1 Analog audio output (From the VE-PG3)/Superimpose PTT A2 Analog GND A3 Analog audio input (To the VE-PG3)/Superimpose squelch detection A4 Analog GND B1 Single PTT control B2 Serial communication (half duplex) B3 Single squelch control B4 Common GND C1 Serial communication TXD (From the VE-PG3) C2 Serial communication RXD (To the VE-PG3) C3 Serial communication RTS (To the VE-PG3) C4 Serial communication CTS (From the VE-PG3) • You can change the configuration of ports B1 to B4 on the VE-PG3's setting screen. • A1/A2 terminal (+/-): Audio output terminal Adjust the output gain according to the audio amplifier. The connected audio equipment may damage if the gain is inappropriately set. The length of the cable which connects the audio equipment and VE-PG3 is less than 10 m (3.3 ft.). Be careful of the noise and malfunction caused by the earth loop. Reference level : Speaker/0 dBs/-20 dBs(0 dBs=0.775 Vrms) selectable Load impedance : more than 600 Ω (Speaker: 8 Ω) • A3/A4 terminal (+/-): Audio input terminal Adjust the output gain according to the audio amplifier. When you use a microphone other than electret condenser microphone (ECM), select "Disable" on the setting screen. Reference level : -10 dBs/-40 dBs(0 dBs=0.775 Vrms) selectable Input impedance : Approximately 10 kΩ (Approximately 1 kΩ when biassed) Supplied voltage : Approximately 2.2 V (For Electret Condenser Microphone) • B1/B2 terminal (+/-): Relay Circuit output terminal. Turns the connected equipment ON or OFF. • You can change the configuration of ports B1 to B4 on the VE-PG3's setting screen. • Specification: 30 V/500 mA. 8-7