Acom 2020S, User Manual, Page: 25 / 76

User's Manual | ACOM 2020S | 1.8-54 MHz Linear Power Amplifier
June 2022 S e c t i o n INSTALLATION | Page 25 of 76
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 Power On +4.5 to +15 V / 3 mA max
12 Debug mode CPU only Power 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
b) RCU's SERIAL interface connector
Please, see
Figure 2-6 | RCU model R05 rear panel
, Pos. 4 and
Table 2-3 | Signals and pin out of the RCU's SERIAL
connector
.
RCU SERIAL interface will be used for connecting and operating various station components that cannot
supported by amplif ier’ s CAT/AUX connector - transceivers, rotators, etc.
Table 2-3 | Signals and pin out of the RCU's SERIAL connector
SERIAL
interface
Pin Nr. Pin name Description Specification
D-sub
connector,
9-pin,
male
(Rear panel
view)
1 - Not connected -
2 RxD Receive Data RS-232 input
3 TxD Transmit Data RS-232 output
4 - Not connected -
5 GND Ground 0 Volt
6 - Not connected -
7 RTX Request To Send RS-232 output
8 CTX Clear To Send RS-232 input
9 - Not connected -
Table 2-3 | Signals and pin out of the RCU's SERIAL connector