Icom IC-7300 HF Plus - ACC Socket Pin Assignments

18
CONNECTOR INFORMATION
18-2
ACC socket
Connects to external equipment or a PC to control the
external unit or to control the transceiver.
• ACC socket
ACC
PIN
No.
NAME DESCRIPTION SPECIFICATIONS
1 8 V
Regulated 8 V output.
( Used as the reference voltage for the
band voltage.)
Output voltage:
Output current:
8 V ±0.3 V
Less than 10 mA
2 GND Connects to ground. —
3 SEND*
1
Input/output
pin.
An external unit
controls the transceiver.
When this pin goes to
ground, the transceiver
transmits.
Input voltage (RX):
Input voltage (TX):
Current ow:
2.0 to 20.0 V
–0.5 to +0.8 V
Maximum 20 mA
The pin goes low
when the transceiver
transmits.
Output voltage (TX):
Current ow:
Less than 0.1 V
Maximum 200 mA
4 BDT Not used. —
5 BAND
Band voltage output.
( Varies with the selected amateur
band)
Output voltage: 0 to 8.0 V
6 ALC ALC voltage input.
Input level:
Input impedance:
–4 to 0 V
More than 3.3 kΩ
7 NC — —
8 13.8 V 13.8 V output when power is ON. Output current: Maximum 1 A
9 TKEY Not used. —
10 FSKK Controls RTTY keying.
High level:
Low level:
Output current:
More than 2.4 V
Less than 0.6 V
Less than 2 mA
11 MOD Modulator input.
Input impedance:
Input level:
10 kΩ
100 mV rms
*
3
12
AF/IF
(IF=12 kHz)*
2
Fixed AF detector or receive IF
(12 kHz) signal output.
Output impedance:
Output level:
4.7 kΩ
100 ~ 300 mV rms *
4
13 SQL S
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
1 2 3 4
8765
9
10 11 12
13
13-pin
Rear panel view
q brown
w red
e orange
r yellow
t green
y blue
u purple
i gray
o white
!0 black
!1 pink
!2 light
blue
!3 light
green
Color refers to the
cable strands of the
supplied cable.
*
2
You can change the pin 12 setting in the “ACC/USB
Output Select” item on the CONNECTORS set screen.
If the pin is set to IF, the transceiver outputs a 12 kHz IF
signal from [ACC]. In that case, you can listen to the DRM
broadcast with the application software receiver that is
installed into your PC.
*
3
You can change the input level in the “ACC MOD Level”
item on the CONNECTORS set screen. (p.12-7)
100 mV rms is at the 50% (default) setting.
*
4
You can change the output level in the “ACC/USB AF
Output Level” item on the CONNECTORS set screen.
(p. 12-7)
Approximately 200 mV rms is at the 50% (default) setting.
*
1
When the SEND terminal controls an inductive load, such
as a relay, a counter-electromotive force can malfunction
or damage the transceiver. To prevent this, we recommend
adding a switching diode, such as an 1SS133, on the load
side of the circuit to absorb the counter-electromotive force.
When the diode is added, a delay in relay switching may
occur. Be sure to check its switching action before operating.
(Example) ACC socket
To a non-Icom
linear amplier
Relay
Switching diode
e SEND
i 13.8 V
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