I Accessory Connector Information - Icom IC-7800 Instruction Manual

2
INSTALLATION AND CONNECTIONS

I Accessory connector information

ACC 1 PIN No. NAME
1
2
3
2
4
5
4
1 3
8
6
7
5
6
7
8
ACC 2 PIN No. NAME
1
2
2
3
4
5
1 3
4
6 7
5
6
7
DESCRIPTION
RTTY Controls RTTY keying
GND Connects to ground.
Input/output pin.
SEND Goes to ground when transmitting.
When grounded, transmits.
Modulator input.
MOD
Connects to a modulator.
AF detector output.
AF Fixed, regardless of [AF] position
in default settings. (see notes below)
Squelch output.
SQLS
Goes to ground when squelch opens.
13.8 V 13.8 V output when power is ON.
ALC ALC voltage input.
DESCRIPTION
8 V Regulated 8 V output.
GND
SEND
Band voltage output.
BAND
(Varies with amateur band)
ALC
Activates [X-VERTER] input/output Input impedance
TRV
when "HIGH" voltage is applied.
13.8 V
"High" level
"Low" level
Output current
Connected in parallel with ACC 2 pin 2.
Ground level
Output current
Input current (Tx)
Connected in parallel with ACC 2 pin 3.
Input impedance
Input level
Output impedance : 4.7 kΩ
Output level
SQL open
SQL closed
Output current
Connected in parallel with ACC 2 pin 7.
Control voltage
Input impedance
Connected in parallel with ACC 2 pin 5.
Output voltage
Output current
Same as ACC 1 pin 2.
Same as ACC 1 pin 3.
Output voltage
Same as ACC 1 pin 8.
Input voltage
Same as ACC 1 pin 7.
NOTE: If the CW side tone level limit or beep level
limit is in use, the CW side tone or beep tone de-
creases from the fixed level when the [AF] control is
rotated above a specified leve. (p. 12-5)
2-10
SPECIFICATIONS
: More than 2.4 V
: Less than 0.6 V
: Less than 2 mA
: –0.5 V to 0.8 V
: Less than 20 mA
: Less than 200 mA
: 10 kΩ
: Approx. 100 mV rms
: 100–300 mV rms
: Less than 0.3 V/5 mA
: More than 6.0 V/100 µA
: Max. 1 A
: –4 V to 0 V
: More than 10 kΩ
SPECIFICATIONS
: 8 V ±0.3 V
: Less than 10 mA
: 0 to 8.0 V
: More than 10 kΩ
: 2 to 13.8 V