70 Connections TB7100 Service Manual
© Tait Electronics Limited October 2005
5.2.2 SI Board Connectors
DC Power Output
Connectors
The two DC power output connectors (J102 and J103) on the SI board are
heavy-duty M4 screw terminals. J102 distributes the DC power (13.8V DC)
to the transmitter, and J103 distributes the DC power to the receiver.
System Interface
Connector to
Transmitter
The system interface connector (J101) to the transmitter is a 16-way surface-
mounted connector.
Pin Signal Name Signal Type Notes
1 Tx and Rx 13.8VDC output
2 Tx and Rx ground output
external view
Pin Signal Name Signal Type Notes
1 TX_AUX_GPIO7 output Tx key signal
2 TX_AUX_GPIO6 bidirectional digital input/output
3 TX_AUX_GPIO5 bidirectional digital input/output
4 TX_AUX_GPIO4 bidirectional digital input/output
5 TX_AUX_RXD input data
6 TX_AUX_TXD output data
7 TX_AUX_GPI3 input digital input
8 TX_AUX_GPI1 input digital input
9 TX_AUX_GPI2 input digital input
10 TX_AUD_TAP_OUT no connection
11 TX_RSSI no connection
12 TX_MIC_AUD output
13 TX_AUD_TAP_IN output Tx audio
14 TX_GND ground ground
15 TX_13V8 no connection
16 N/C no connection
external view
12
1615
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