![background image](http://html.mh-extra.com/html/icom/ic-78/ic-78_instruction-manual_612334008.webp)
6
2
PANEL DESCRIPTION
D
D
ACC SOCKET INFORMATION
• ACC socket
• When connecting the ACC conversion cable (OPC-599)
ACC
PIN # NAME
DESCRIPTION
SPECIFICATIONS
ACC 1
ACC 2
➀
FSKK
➄
AF
➁
GND
➅
SQLS
➂
SEND
➆
13.8 V
➃
MOD
➇
ALC
➀
8 V
➄
ALC
➁
GND
➅
NC
➂
SEND
➆
13.8 V
➃
BAND
1
1
2
2
3
3
4
4
8
8
7
7
6
6
5
5
9 10 11 12
13
1
2
3
4
7
6
5
Rear panel
view
1
2
3
4
8
7
6
5
9 10 11 12
13
1
8 V
Regulated 8 V output.
Output voltage : 8 V ±0.3 V
Output current
: Less than 10 mA
2
GND
Connects to ground.
—
Input/output pin.
Ground level
: –0.5 V to 0.8 V
3
SEND Goes to ground when transmitting.
Input current
: Less than 20 mA
When grounded, transmits.
4
BDT
Data line.
—
5
BAND Band voltage output.
6
ALC
ALC voltage output.
Control voltage : –4 V to 0 V
Input impedance : More than 10 k
Ω
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.
Ground level
: –0.5 V to 0.8 V
Input current
: Less than 10 mA
11
MOD
Modulation input.
Input impedance : 10 k
Ω
Input level
: Approx. 100 mV rms
12
AF
AF detector output.
Output impedance: 4.7 k
Ω
Fixed, regardless of [AF] position. Output level
: 100–300 mV rms
13
SQLS
Squelch output.
SQL open
: Less than 0.3 V/5 mA
Goes to ground when squelch opens. SQL closed
: More than 6.0 V/100 µA