Acom 700S - Table 2-2 | Signals and Pin out of the CAT;AUX Connector

User's Manual | ACOM 700S | 1.8-54 MHz Linear Amplifier
Page 28 of 92 | S e c t i o n INSTALLATION
April 2024
Note that some of the connections - to the transceiver's BCD band data outputs and
Band Voltage outputs do not provide an exact frequency data, but only band data. Those
connections cannot be used when ACOM 700S works together with ACOM 04AT or 06AT
because the tuner needs to know the exact frequency, not only the band.
Besides the RS-232 and TTL compatible serial interface, the CAT connector also carries
the KEY IN and KEY OUT lines, which can be used instead of using separate cables for
those functions from the transceiver to the sockets of the same names.
Table 2-2 | Signals and pin out of the CAT/AUX connector
CAT/AUX
interface
Pin Nr.
Pin name
Description
Specification
D-sub
connector,
15-pin,
3-row,
female
(Rear panel
view)
1
RxD
Receive Data
TTL input
2
RxD
Receive Data
RS-232 input
3
TxD
Transmit Data
RS-232 output
4
TxD
Transmit Data
TTL output
5
GND
Ground
0 Volt
6
BAND voltage
Analogue input
0 to +8 V
7
Band data 0
Bit 0
TTL input
8
Band data 1
Bit 1
TTL input
9
Band data 2
Bit 2
TTL input
10
Band data 3
Bit 3
TTL input
11
ON RMT
Remote Pwr On
+4.5 to +15 V / 3 mA max
12
Debug mode
CPU only Pwr input
+8 to +15 V / 0.4 A
13
KEY IN
Tx request
Less than +12 V / 6 mA
14
KEY OUT
Tx Ready
O.C. output, up to +50 V / 20 mA
15
GND
Ground
0 Volt
Table 2-2 | Signals and pin out of the CAT/AUX connector