Acom 700S, User Manual, Page: 18 / 52

User's Manual | ACOM 700S | 1.8-54 MHz Linear Amplifier
Page 18 of 52 | S e c t i o n INSTALLATION May 2021
2.4.
Connecting to External Devices (transceiver, computer, etc.) and User Settings
a) CAT/AUX interface
Please, see
Figure 2-1 Rear panel - Connections (3)
.
CAT/AUX interface is used for connecting and operating with various transceiver models (see
Table 2-1
Signals and pin out of the CAT/AUX connector
below and the respective menu in Section
5.3 Menu CAT/AUX
SETTINGS (Selection of CAT/AUX interface)
,
Table 5-1 Transceiver interface
and
Figure 5-4 Menu CAT/AUX
SETTINGS
).
Most of the modern transceivers can be connected by CAT to the ACOM 700S. This will allow the amplifier
to track the transceiver frequency without any transmission and change the bands automatically when in
Operate mode. The cable can be supplied optionally, ordered separately or home brewed according to
Table 2-1 Signals and pin out of the CAT/AUX connector
and the transceiver's manual.
The CAT connection requires a cable made especially for the ACOM 700S and your transceiver. If you need
cable wiring diagrams, Please, contact your dealer (see Section
1.2 Owner Assistance
).
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
because the tuner needs to know the exact frequency, not only the band.
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 / 6m A
14 KEY - OUT Tx Ready O.C. output, up to +50 V / 20 mA
15 GND Ground 0 Volt
Table 2-1 Signals and pin out of the CAT/AUX connector