User's Manual Part 2

T6T 300 Watt VHF Transmitter Page 86 Installation
Front Panel Connectors
Microphone/Diagnostics Connector
The Microphone/Diagnostics connector is a self-locking 7-way DIN socket used for connecting a
microphone, microphone/headset or PC. The connector pin-out is detailed in Table 16.
Reference Connector
The Reference connector is an SMB plug used to monitor the radio’s reference frequency. It monitors
the frequency at a level of 100 mV (±50 mV) with less than -10 dBc harmonics.
Table 16 Microphone/Diagnostics Connector
Pin Number Signal Characteristic Usage
1 Microphone ground 0 V. Microphone/Headset
2 Transmit data RS232. 115200 baud, 8 data bits, 1 stop bit,
no parity, no handshaking.
PC
3 Microphone PTT 0 V to PTT. Microphone/Headset
4 Receive data RS232. 115200 baud, 8 data bits, 1 stop bit,
no parity, no handshaking.
PC
5 Sidetone – Microphone/Headset
6 Microphone input To ensure correct VOGAD operation, the
following microphone input levels are
required:
Passive setting: between 2 and 35 mV
Active setting: between 8 and 140 mV.
Microphone/Headset
7 Ground 0 V. PC
Pin-out of the Microphone/Diagnostics connector looking into
the mating face of the chassis mounted socket.
A suitable free plug is detailed in Table 14 on page 70.