Icom IC-7410 Instruction Manual page 17

D
ACC PIN No.
1
2
13
9 10 11 12
5 6 7 8
1 2 3 4
3
Rear panel view
q brown i
gray
w red o
white
e orange !0
black 4
r yellow !1
pink
5
t green !2
light
y blue
blue
u purple !3
6
light
green
7
8
Color refers to
the cable strands
9
of the supplied
cable.
10
11
12
13
* When the SEND terminal controls an inductive load (such as a relay), a counter-electromotive force can cause
the transceiver's malfunction or 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.
!3
Connect to ACC socket
o !0 !1 !2
t y u i
q w e r
NAME DESCRIPTION
8 V
Regulated 8 V output.
GND
Connects to ground.
An external unit controls
the transceiver.
When this pin goes low,
Input/out-
the transceiver transmits.
SEND*
put pin.
The transceiver outputs
a low signal to control an
external unit.
NC
———
BAND
Band voltage output.
ALC
ALC voltage input.
NC ———
13.8 V 13.8 V output when power is ON.
NC ———
FSKK
Controls RTTY keying
MOD
Modulator input.
AF detector output.
AF
Fixed level, regardless of the [AF]
control position.
Squelch output.
SQL S
Grounded when squelch opens.
[Example]
Switching diode
ACC
socket
eSEND
i13.8 V
ACC 1
q FSKK
w GND
e SEND
r MOD
Output voltage
Output current
Input voltage (High)
Input voltage (Low)
Current flow
Output voltage (Low)
Current flow
Output voltage
Control voltage
Input impedance
Output current
"High" level
"Low" level
Output current
Input impedance
Input level
Output impedance
Output level
SQL open
SQL closed
To a non-Icom
linear amplifier
Relay
ACC 2
2
5
4
3
1
8
6 7
t AF
q 8 V
y SQL S
w GND
u 13.8 V
e SEND
i ALC
r BAND
PANEL DESCRIPTION
SPECIFICATIONS
: 8 V ± 0.3 V
: Less than 10 mA
———
: 2.0 V to 20.0 V
: –0.5 V to +0.8 V
: Max. 20 mA
: Less than 0.1 V
: Max. 200 mA
———
: 0 V to 8 V
: –3 V to 0 V
: More than 3.3 k˘
———
: Less than 1 A
———
: More than 2.4 V
: Less than 0.6 V
: Less than 2 mA
: 10 k˘
: Approx. 100 mV rms
: 4.7 k˘
: 100 to 300 mV rms
: Less than 0.3 V/5 mA
: More than 6.0 V/100 μA
2
5
4
3
1
6 7
t ALC
y NC
u 13.8 V
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
10