TA2922 Universal Line Interface Service Manual 47
© Tait Electronics Limited March 2010
6 Testing and fault finding
6.1 S1 Technician Programming Connector
S1 is a 6-way single in-line connector for programming TA2922 software options
and also for upgrades to the option board software.
6.2 S2 Factory Programming Connector
S2 is a 2x3-way connector intended for factory programming only
Pin number Signal name Function
1 +13V8_SW +13.8V unregulated DC supply
2 /GATE OUT 2 Gate relay common
3 GND DC ground
4 /PTT IN 2 TX key to optocoupler
5 DATA OUT RS-232 data from TA2922 to PC serial port
6 DATA IN RS-232 data from PC serial port to TA2922
Pin number Signal name Function
1 VDD +3.3V regulated supply
2 N/C Not connected
3 PGC Program clock
4 GND DC ground
5 MCLR Master clear/reset
6 PGD Program data
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