User's Manual

CONNECTION
The radio antenna connects by means of a BNC coaxial connector. All other
connections to the T100 transceiver are made using a standard 9-way D type connector as
detailed in the table below.
PIN NAME FUNCTION REMARKS
1 MOD I/P Modulation input To transmitter;
Analog (750mV p-p for nominal
deviation) or
TTL/CMOS compatible (factory set)
2 RX O/P Receiver Output
Analog (350mV p-p) or
5V CMOS levels, high ( +5V) when no
signal present (factory set)
3 bTbXbE transmit enable
HIGH >2.5V = receive
LOW <0.8V = transmitter enabled
4 0V 0 volts common DC and signal ground
5 + Vin positive supply +10 to +14 V DC
6 SQF Squelch flag output
HIGH (+5V, 10kS pull-up) = Signal
present
LOW (<0.8V) = Signal not present
7 CS channel select Serial channel select input (RS232
compatible)
8 RSSI Received Signal
Strength Indicator
+1 to +3V DC nominal, 50dB range
9 0V 0 volts common DC and signal ground