STE sas Milano - ITALY
Pag. 7 of 14
Fig. 7 “MCU” to transceiver typical connection (“Data” mode) with channel parallel programming.
Fig. 8 Typical transceiver connections in “Voice” mode (analogue signals).
J1
2
1
3
5
7
9
11
13
15
17
19
20
5 VDC
4
6
MCU
PTT
RXD
TXD
CTS
CHD
CHC
CHB
CHA
DATA/
VOICE
ARX
RSI
CD
J1
2
1
3
5
7
9
11
13
15
17
19
20
5 VDC
4
6
"S"
RX AUDIO OUTPUT (245 mVrms)
CAR.DECT.
-10 dBm , 600 Ohm Load
ATX
CHD
CHC
CHB
CHA
ARX
RSI
CD
TX AUDIO INPUT (245 mVrms)
-10 dBm , 600 Ohm Load
NOTE (1) : S3 SELECTOR = OPEN
PTT
(1)