D Acc Socket Information - Icom IC-78 Instruction Manual

2
PANEL DESCRIPTION

D ACC SOCKET INFORMATION

• ACC socket
ACC
13
9 10 11 12
5 6 7 8
1 2 3 4
Rear panel
view
• When connecting the ACC conversion cable (OPC-599)
13
9 10 11 12
5 6 7 8
1 2 3 4
6
PIN # NAME DESCRIPTION
1 8 V Regulated 8 V output.
2 GND Connects to ground.
Input/output pin.
3 SEND Goes to ground when transmitting.
When grounded, transmits.
4 BDT Data line.
5 BAND Band voltage output.
6 ALC ALC voltage output.
7 NC —
8 13.8 V 13.8 V output when power is ON. Output current : Max. 1 A
9 TKEY Key line.
10 FSKK RTTY key input.
11 MOD Modulation input.
AF detector output.
12 AF
Fixed, regardless of [AF] position. Output level
Squelch output.
13 SQLS
Goes to ground when squelch opens. SQL closed
2
5
4
3
1
8
6 7
ACC 1
2
5
4
3
1
6 7
ACC 2
Output voltage : 8 V ±0.3 V
Output current : Less than 10 mA
—
Ground level
Input current
—
Control voltage : –4 V to 0 V
Input impedance : More than 10 kΩ
—
—
Ground level
Input current
Input impedance : 10 kΩ
Input level
Output impedance : 4.7 kΩ
SQL open
� FSKK � AF
� GND � SQLS
� SEND � 13.8 V
� MOD � ALC
� 8 V � ALC
� GND � NC
� SEND � 13.8 V
� BAND
SPECIFICATIONS
: –0.5 V to 0.8 V
: Less than 20 mA
—
: –0.5 V to 0.8 V
: Less than 10 mA
: Approx. 100 mV rms
: 100–300 mV rms
: Less than 0.3 V/5 mA
: More than 6.0 V/100 µA