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13
1
PANEL DESCRIPTION
N
Rear panel (Continued)
D
!##SOCKETINFORMATION
s!##SOCKET
ACC
PIN No.
NAME
DESCRIPTION
SPECIFICATIONS
1
2 3
4
8
7
6
5
9 10 11 12
13
Rear panel view
Color refers to
the cable strands
of the supplied
cable.
q
brown
w
red
e
orange
r
yellow
t
green
y
blue
u
purple
i
o
!0
!1
!2
!3
gray
white
black
pink
light
blue
light
green
1
8 V
Regulated 8 V output.
Output voltage
Output current
: 8 V
± 0.3
V
: Less than 10
mA
2
GND
Connects to ground.
———
3
HSEND
*
1, 2
I n p u t / o u t -
put pin.
An external equipment
controls the transceiver.
When this pin goes low,
the transceiver trans-
mits.
Input voltage (High)
Input voltage (Low)
Current flow
: 2.0 V to 20.0 V
: –0.5 V to +0.8 V
: Max. 20 mA
The transceiver outputs a
low signal to control exter-
nal equipment.
Output voltage (Low)
Current flow
: Less than 0.1 V
: Max. 200 mA
4
NC
———
———
5
BAND
Band voltage output.
Output voltage
: 0 to 8 V
6
ALC
ALC voltage input.
Control voltage
Input impedance
: –3 V to 0 V
: More than 3.3 k
˘
7
VSEND
*
1, 2
I n p u t / o u t -
put pin.
An external equipment
controls the transceiver.
When this pin goes low,
the transceiver trans-
mits.
Input voltage (High)
Input voltage (Low)
Current flow
: 2.0 V to 20.0 V
: –0.5 V to +0.8 V
: Max. 20 mA
The transceiver outputs a
low signal to control exter-
nal equipment.
Output voltage (Low)
Current flow
: Less than 0.1 V
: Max. 200 mA
8
13.8 V
13.8 V output when power is ON.
Output current
: Less than 1
A
9
NC
———
———
10
FSKK
#ONTROLS2449KEYING
“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 k
˘
: Approx. 100 mV rms
12
AF*
3
AF detector output.
Fixed level, regardless of the [AF]
control position.
Output impedance
Output level
: 4.7 k
˘
: 100 to 300 mV rms
13
SQL S*
3
Squelch output.
Grounded when squelch opens.
SQL open
SQL closed
: Less than 0.3 V/5 mA
: More than 6.0 V/100 µA
*
1
When the SEND terminal controls the 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.
e
HSEND or
u
VSEND
i
13.8 V
ACC socket
Relay
Switching diode
To a non-Icom
linear amplifier
[Example]
*
2
VSEND is used for the 144 MHz, 430 MHz, and 1200 MHz bands, and HSEND is used for the HF/50 MHz bands
BYDEFAULT9OUCANCHANGETHISSETTINGINh63%.$3ELECTvOFTHE3ETMODEP
*
3
4HEPIN!& ANDPIN31,3 OUTPUTCAPABILITIESAREFORTHE-!)."ANDS!&ANDSQUELCHBYDEFAULT9OU
can change this setting in “ACC AF/SQL Select” of the Set mode. (p. 166)