10 TA2922 Universal Line Interface Service Manual
© Tait Electronics Limited March 2010
External options connector (SK1) - TA2922-01 8-wire isolated line interface
External options connector (SK1) - TA2922-02 2-wire line interface
External options connector (SK1) - TA2922-03 6-wire line interface
Pin Signal Description
1 Line out 1 balanced Rx audio output -10dBm into 600 ohms
2 Gate out 1
Rx gate relay contact 1
3GND
DC ground
4 PTT in + DC into Tx key opto coupler (10 to 50V)
5 Line in 1 balanced Tx audio input, 600 ohm impedance, -10dBm
6 Line in 2
balanced Tx audio input, 600 ohm impedance, -10dBm
7 PTT in - DC into Tx key opto coupler (10 to 50V)
8 Gate out 2 Rx gate relay contact 2
9 Line out 2
balanced Rx audio output -10dBm into 600 ohms
hj
b
gi
cdef
outside view
Pin Signal Description
1 Line audio 1 balanced Tx and Rx audio, 600 ohm impedance -
10dBm for 2kHz deviation (wide band)
2 Line audio 2
balanced Tx and Rx audio, 600 ohm impedance -10dBm
for 2kHz deviation (wide band)
3—
4—
5 GND DC ground
6—
7—
8 RAD_DATA_IN RS-232 data from PC for programming
9 RAD_DATA_OUT
RS-232 data to PC for programming
hj
b
gi
cdef
outside view
Pin Signal Description
1 Line out 1 balanced Rx audio output -2dBm into 600 ohms for 2kHz
deviation (wide band)
2GND
DC ground
3GND
DC ground
4 +13.8V-SW Switched 13.8V output (unregulated) @ 150mA
5 Line in 1 balanced Tx audio input, 600 ohm impedance, -14dBm
for 2kHz deviation (wide band)
6 Line in 2
balanced Tx audio input, 600 ohm impedance, -14dBm
for 2kHz deviation (wide band)
7 Tx Key PTT in (active low)
8 Rx Gate Rx gate output (connect to gnd via relay contacts when
active)
9 Line out 2
balanced Rx audio output -2dBm into 600 ohms for 2kHz
deviation (wide band)
hj
b
gi
cdef
outside view
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