User Manual

2-2
Part No. 001-2100-101
2.2.4 GENERAL PINOUT DESCRIPTION
Table 2-1 Channel Select Table
CSO_N.... CS2_N internally pulled up to 5 VDC, ground pin for logic low.
PIN 1: Channel Select 0 (CSO_N) Switch 0
PIN 2: Channel Select 1 (CS1_N) Switch 1
PIN 3: Channel Select 2 (CS2_N) Switch 2
PIN 4: TX Microphone Input (MIC_IN) 30 mVrms nominal for 60% rated deviation.
PIN 5: Connected internally to Pin 1
PIN 6: Raw Battery Supply (7.2 or 12.5 VDC nominal) Power supply 6-15 VDC, 3 Amps maximum.
PIN 7: TX Auxiliary Input (AUX_IN) Audio input for the transmitter.
Without pre-emphasis: 40 mVrms nominal for 60% rated deviation.
With pre-emphasis: 200 mVrms nominal for 60% rated deviation.
PIN 8: RX Auxiliary Output (AUX_OUT): Audio from the receiver.
Without pre-emphasis: 212 Vrms
± 18 mV
With pre-emphasis: 160 mVrms
± 18 mV
Into a 600 ohm load
PIN 9: Program I/O From Computer
(PGM_IN_OUT) (TTL) The Interface cable (see Table 1-1) converts RS-232 to TTL logic for JSLM
2
programming information.
PIN 10: Ready to Send (RS) (TTL) Radio is locked on frequency and transmitter is ready to accept audio input,
set with software active high or low.
CH CSO_N CS1_N CS2_N
1 0 0 0
2 1 0 0
3 0 1 0
4 1 1 0
5 0 0 1
6 1 0 1
7 0 1 1
8 1 1 1