Simoco SRP9100 - Page 2

3.5mm
2.5mm
DB9F
to PC
3
330R 1%
2
5
2k7
1%
27k
1%
PTT
1uF Bipolar
TX AF
In
RX AF
Out
P1761
680R16R
RxD In
TXD Out
470u
25V
470u
25V
2k7
Zener 5v6
27k
1%
1
2
S1
Figure 1-1 SRP9100 Radio Test Interface Unit
Notes for test jig:
1. The PTT switch activates transmit on the portable.
2. Interface data levels are TTL with RS232 polarity, although should work with most personal
computers.
3. 16R resistor simulates speaker load.