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2-12
2
INSTALLATION AND CONNECTIONS
■
Accessory connector information
NOTE:
If the CW side tone level limit or beep level limit is in use, the CW side tone or beep tone decreases
from the fixed level when the [AF] control is rotated above a specified level. (p. 12-6)
1
2
3
4
5
6
7
8
ACC 1
PIN No. NAME
DESCRIPTION
SPECIFICATIONS
1
RTTY
Controls RTTY keying
“High level”
“High level”
Output current
: More than 2.4 V
: Less than 0.6 V
: Less than 2 mA
2
GND
Connects to ground.
Connected in parallel with ACC 2 pin 2.
———
3
SEND*
Input/output
pin.
Connected in
parallel with
ACC 2 pin 3.
An external equipment
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 ex
-
ternal equipment.
Output voltage (Low)
Current flow
: Less than 0.1 V
: Max. 200 mA
4
MOD
Modulator input.
Connects to a modulator.
Input impedance
Output level
: 10 k
Ω
:
Approximately 100 mV rms
5
AF
AF detector output.
Fixed level, regardless of [AF] position
in default settings. (see notes below)
Output impedance
Output level
: 4.7 k
Ω
: 100–300 mV rms
6
SQLS
Squelch output.
Grounded when squelch opens.
SQL open
SQL closed
: Less than 0.3 V/5 mA
: More than 6.0 V/100 µA
7
13.8 V
13.8 V output when power is ON.
Connected in parallel with ACC 2 pin 7.
Output current
: Maximum 1 A
8
ALC
ALC voltage input.
Connected in parallel with ACC 2 pin 5.
Control voltage
Input impedance
: –4 V to 0 V
: More than 10 k
Ω
1
2
3
4
5
6
7
ACC 2
PIN No. NAME
DESCRIPTION
SPECIFICATIONS
1
8 V
Regulated 8 V output.
Output voltage
Output current
:
8 V ±0.3 V
:
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 V to 8.0 V
5
ALC
Same as ACC 1 pin 8.
6
TRV
Activates [X-VERTER] input/output
when “HIGH” voltage is applied
Input impedance
Input voltage
: More than 10 k
Ω
: 2 V to 13.8 V
7
13.8 V
Same as ACC 1 pin 7.
*
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
SEND
u
13.8 V
ACC 1/2
sockets
Relay
Switching diode
To a non-Icom
linear amplifier
[Example]