D Acc Socket Information - Icom ic-718 Instruction Manual

D ACC SOCKET INFORMATION

• ACC socket
ACC PIN # NAME
1 8 V
2 GND
3 SEND
4 BDT
5 BAND
13
6 ALC
9 10 11 12
5 6 7 8
1 2 3 4
7 NC
8 13.8 V
Rear panel
view
9 TKEY
10 FSKK
11 MOD
12 AF
13 SQL S
• When connecting the ACC conversion cable (OPC-599)
4
1
6
13
9 10 11 12
ACC 1
5 6 7 8
1 2 3 4
4
1
6
ACC 2
When the SEND terminal controls an inductive load (such as a relay), a counter-electromotive force can cause the transceiver
to malfunction or other damage. To prevent this, we recommend adding a switching diode, such as an "1SS133," on the load side
of the circuit to the counter-electromotive force absorption. When the diode is added, a switching delay of the relay may occur.
Be sure to check its switching action before operation.
[Example]
Switching diode
ACC
socket
eSEND
i13.8V
DESCRIPTION
Regulated 8 V output.
Connects to ground.
Input/output pin.
Goes to ground when transmitting.
When grounded, transmits.
Data line for the optional AT-180.
Band voltage output.
(Varies with amateur band)
ALC voltage input.
—
13.8 V output when power is ON.
Key line for the AT-180.
RTTY keying input.
Modulator input.
AF detector output.
Fixed, regardless of [AF] position.
Squelch output.
Goes to ground when squelch opens.
q FSKK t AF
2
5
w GND y SQLS
3
e SEND u 13.8 V
8
7
r MOD i ALC
q 8 V t ALC
2
5
w GND y NC
3
e SEND u 13.8 V
7
r BAND
To a non-Icom
linear amplifier
Relay
PANEL DESCRIPTION
SPECIFICATIONS
Output voltage: 8 V ±0.3 V
Output current: Less than 10 mA
—
Ground level: –0.5 V to 0.8 V
Input current: Less than 20 mA
—
Output voltage: 0 to 8.0 V
Control voltage: –4 to 0 V
Input impedance: More than 10 k
—
Output current: Maximum 1 A
—
Ground level: –0.5 to 0.8 V
Input current: Less than 10 mA
Input impedance: 10 k
Input level: Approx. 100 mV rms
Output impedance: 4.7 k
Output level: 100 to 300 mV rms
SQL open: Less than 0.3 V/5 mA
SQL closed: More than 6.0 V/100 µA
2
7