Icom IC-7850 Instruction Manual - Page 266

Acc Socket, Connector Information

Page 266 highlights

Previous view 20 CONNECTOR INFORMATION ■■ACC socket Connects to external equipment or a personal computer to control the external unit or to control the transceiver. 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. B (Rear panel view) ACC 1 PIN No. NAME DESCRIPTION SPECIFICATIONS 1 RTTY Controls RTTY keying "High level": "Low level": Output current: More than 2.4 V Less than 0.6 V Less than 2 mA 2 GND Connects to ground. Connected in parallel with ACC 2 pin 2. 2 45 183 67 3 SEND* Input/output pin. Connected in An external equipment controls the transceiver. When this pin goes low, the transceiver transmits. Input voltage (TX): Input voltage (RX): Current flow: -0.5 V to 0.8 V 2.0 V to 20.0 V Maximum 20 mA parallel with ACC 2 pin 3. The pin outputs a low level signal when the transceiver transmits. Output voltage (TX): Current flow: Less than 0.1 V Maximum 200 mA 4 MOD Modulator input. Connects to the circuit. internal modulator Input impedance: Output level: 10 kΩ Approximately 100 mV rms (Rear panel view) 5 AF/ IF Fixed AF detector or receive IF (12 kHz) Output impedance: 4.7 kΩ (IF=12 kHz) signal output. Output level: 100-300 mV rms 6 SQLS Squelch output. Grounded when the squelch opens. SQL open: SQL closed: Less than 0.3 V/5 mA More than 6.0 V/100 µA 7 15V 15V output when power is ON. Connected in parallel with ACC 2 pin 7. Output current: Max. 1 A 8 ALC ALC voltage input. Input impedance: Connected in parallel with ACC 2 pin 5. Input level: More than 10 kΩ -4 V to 0 V ACC 2 PIN No. NAME 1 8 V 2 2 45 3 1 3 4 67 5 (Rear panel view) 6 GND SEND* BAND ALC TRV 7 15V DESCRIPTION SPECIFICATIONS Regulated 8 V output. Output voltage: Output current: 8 V ±0.3 V Less than 10 mA Same as ACC 1 pin 2. Same as ACC 1 pin 3. Band voltage output. (Varies with the selected amateur band) Output voltage: 0 V to 8.0 V Same as ACC 1 pin 8. Activates [X-VERTER] input/output when "HIGH" voltage is applied Input impedance: More than 10 kΩ Input voltage: 2 V to 13.8 V Same as ACC 1 pin 7. 20-2

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