Cc Socket - Icom IC-7851 Instruction Manual

20
CONNECTOR INFORMATION
■ ACC socket
Connects to external equipment or a personal com-
puter to control the external unit or to control the trans-
ceiver.
Sockets [A ACC1] and [A ACC2] output AF signals of
the Main band, sockets [B ACC1] and [B ACC2] output
AF signals of the Sub band.
ACC 1 PIN No.
1
2
3
2
4
5
1 3
8
4
6
7
(Rear panel view)
5
6
7
8
ACC 2 PIN No.
1
2
2
3
4 5
1 3
4
6 7
5
(Rear panel view)
6
7
NAME DESCRIPTION
RTTY Controls RTTY keying
GND
Connects to ground.
Input/output
pin.
SEND*
Connected in
parallel with
ACC 2 pin 3.
Modulator input.
MOD Connects to the internal modulator
circuit.
Fixed AF detector or receive IF (12 kHz)
AF/ IF
(IF=12 kHz) signal output.
Squelch output.
SQLS
Grounded when the squelch opens.
15V output when power is ON.
15V
Connected in parallel with ACC 2 pin 7.
ALC voltage input.
ALC
Connected in parallel with ACC 2 pin 5.
NAME DESCRIPTION
8 V
Regulated 8 V output.
GND Same as ACC 1 pin 2.
SEND* Same as ACC 1 pin 3.
Band voltage output.
BAND
(Varies with the selected amateur band)
ALC Same as ACC 1 pin 8.
Activates [X-VERTER] input/output
TRV
when "HIGH" voltage is applied
15V
Same as ACC 1 pin 7.
An external equipment
controls the transceiver.
When this pin goes low,
the transceiver transmits.
The pin outputs a low lev-
el signal when the trans-
ceiver transmits.
20-2
B
(Rear panel view)
SPECIFICATIONS
More than 2.4 V
"High level":
Less than 0.6 V
"Low level":
Output current:
Less than 2 mA
Connected in parallel with ACC 2 pin 2.
–0.5 V to 0.8 V
Input voltage (TX):
2.0 V to 20.0 V
Input voltage (RX):
Maximum 20 mA
Current flow:
Less than 0.1 V
Output voltage (TX):
Maximum 200 mA
Current flow:
Input impedance: 10 kΩ
Approximately 100 mV rms
Output level:
Output impedance: 4.7 kΩ
100–300 mV rms
Output level:
SQL open: Less than 0.3 V/5 mA
SQL closed: More than 6.0 V/100 µA
Output current: Max. 1 A
Input impedance: More than 10 kΩ
–4 V to 0 V
Input level:
SPECIFICATIONS
8 V ±0.3 V
Output voltage:
Output current: Less than 10 mA
0 V to 8.0 V
Output voltage:
Input impedance: More than 10 kΩ
2 V to 13.8 V
Input voltage: