Icom IC-7410 Instruction Manual - Page 17

DACC socket information - modulated input

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1 PANEL DESCRIPTION D ACC socket information • ACC socket ACC 13 9 10 11 12 5678 1234 Rear panel view q brown i gray w red o white e orange !0 black r yellow !1 pink t green !2 light y blue blue u purple !3 light green Color refers to the cable strands of the supplied cable. PIN No. 1 2 3 4 5 6 7 8 9 10 11 12 13 NAME 8 V GND SEND* NC BAND ALC NC 13.8 V NC FSKK MOD AF SQL S DESCRIPTION Regulated 8 V output. SPECIFICATIONS Output voltage Output current : 8 V ± 0.3 V : Less than 10 mA Connects to ground. --- An external unit controls the transceiver. Input voltage (High) Input voltage (Low) Input/out- When this pin goes low, the transceiver transmits. Current flow put pin. The transceiver outputs a low signal to control an Output voltage (Low) Current flow external unit. : 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 --- --- Band voltage output. Output voltage : 0 V to 8 V ALC voltage input. Control voltage Input impedance : -3 V to 0 V : More than 3.3 k˘ --- --- 13.8 V output when power is ON. Output current : Less than 1 A --- --- Controls RTTY keying "High" level "Low" level Output current : More than 2.4 V : Less than 0.6 V : Less than 2 mA Modulator input. Input impedance Input level : 10 k˘ : Approx. 100 mV rms AF detector output. Output impedance Fixed level, regardless of the [AF] Output level control position. Squelch output. Grounded when squelch opens. SQL open SQL closed : 4.7 k˘ : 100 to 300 mV rms : Less than 0.3 V/5 mA : More than 6.0 V/100 µA * W hen 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. [Example] ACC socket eSEND Switching diode To a non-Icom linear amplifier i13.8 V Relay • When connecting the ACC conversion cable (OPC-599) !3 o !0 !1 !2 tyui qwer Connect to ACC socket ACC 1 4 25 1 3 8 6 7 q FSKK w GND e SEND r MOD t AF y SQL S u 13.8 V i ALC ACC 2 4 25 1 3 6 7 q 8 V w GND e SEND r BAND t ALC y NC u 13.8 V 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 10

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10
1
PANEL DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
D
ACC socket information
• ACC 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
SEND*
Input/out-
put pin.
An external unit controls
the transceiver.
When this pin goes low,
the transceiver transmits.
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 an
external unit.
Output voltage (Low)
Current flow
: Less than 0.1 V
: Max. 200 mA
4
NC
———
———
5
BAND
Band voltage output.
Output voltage
: 0 V to 8 V
6
ALC
ALC voltage input.
Control voltage
Input impedance
: –3 V to 0 V
: More than 3.3 k
˘
7
NC
———
———
8
13.8 V
13.8 V output when power is ON.
Output current
: Less than 1
A
9
NC
———
———
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 k
˘
: Approx. 100 mV rms
12
AF
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
Squelch output.
Grounded when squelch opens.
SQL open
SQL closed
: Less than 0.3 V/5 mA
: More than 6.0 V/100 µA
*
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.
e
SEND
i
13.8 V
ACC
socket
Relay
Switching diode
To a non-Icom
linear amplifier
[Example]
8
1
2
3
4
7
6
5
1
2
3
4
7
6
5
qwer
tyui
o!
0!
1!
2
!
3
Connect to ACC socket
ACC 1
ACC 2
q
FSKK
w
GND
e
SEND
r
MOD
t
AF
y
SQL S
u
13.8 V
i
ALC
q
8 V
w
GND
e
SEND
r
BAND
t
ALC
y
NC
u
13.8 V
• When connecting the ACC conversion cable (OPC-599)