Acc Socket Information - Icom IC-725 Instruction Manual

3 SYSTEM
INTERCONNECTIONS
• HM-12 SCHEMATIC
DIAGRAM
MICROPHONE
MICROPHONE CABLE
MIC R
PHONE PLUG
3-7
ACC SOCKET
INFORMATION
(1)
ACC(1).
SOCKET
PIN NO. PIN
NAME
DESCRIPTION SPECIFICATIONS
1
NC No
connection.
2
GND
Connects
to
ground. Connected
in
parallel
with
ACC(2)
pin
2.
3
SEND
Input/output
pin.
Goes
to
ground
when
transmitting.
When
grounded,
transmits.
Ground
level
:
-0.5
~
0.8
V
Input current
less
than
20
mA
Connected
in
parallel
with
ACC(2)
pin
3.
4
MOD
Modulator
input.
Connects
to
a
modulator.
Input
impedance
Input
level
:
10
kft
:
Approx. 100
mV
rms
5
AF
AF
detector output.
Fixed,
regardless
of
[AF]
position.
Output impedance
Output
level
:
4.7 kfi
:
100
~
300
mV
rms
6
SOLS
Squelch output.
Goes
to
ground
when
squelch opens.
SQL
open
SQL
closed
:
Less
than
0.3
V/5
mA
:
More
than 6.0
V/1 00
fiA
7 13.8
V
13.8
V
output
when
power
is
ON.
Output current
:
Max.
1
A
Connected
in parallel
with
ACC(2)
pin
7.
8
ALC ALC
voltage input.
Control voltage
:
-4
~
V
Input
impedance
:
More
than 10 k£2
Connected
in parallel
with ACC(2)
pin
5.
(2)
ACC(2)
SOCKET
PIN NO, PIN
NAME
DESCRIPTION SPECIFICATIONS
1
8
V
Regulated 8
V
output.
Output
voltage
Output
current
:
8V+0.3V
Less
than 10
mA
2
GND
Same
as
ACC(1)
pin
2.
3
SEND
Same
as
ACC(1)
pin
3.
4
BAND
Band
voltage
output.
(Varies
with amateur band)
Output
voltage
:
0-8.0V
5
ALC
Same
as
ACC(1)
pin
8.
6
NC
No
connection.
7 13.8
V
Same
as
ACC(1)
pin
7.