3-3
● REAR panel (2)
[ACC 1]
• 8-pin
[ACC 2]
• 7-pin
[ACC 1]/[ACC 2]
ACC 1
PIN
No.
NAME DESCRIPTION SPECIFICATIONS
8-pin
1
2
3
4
5
6
7
8
Rear panel
view
1 RTTY Controls RTTY keying.
High level: More than 2.4 V
Low level: Less than 0.6 V
Output current: Less than 2 mA
2 GND Connects to ground. Connected in parallel with ACC 2 pin 2.
3 SEND*
1
Input/output pin.
Connected in
parallel with ACC
2 pin 3.
An external unit controls
the transceiver. When
this pin goes to ground,
the transceiver transmits.
Input voltage (RX): 2.0~20.0 V
Input voltage (TX): –0.5~+0.8 V
Current flow: Maximum 20 mA
The pin goes low when
the transceiver transmits.
Output voltage (TX):
Less than 0.1 V
Current flow: Maximum 200 mA
4 MOD
Modulator input.
Connects to the internal modulator circuit.
Input impedance: 10 kΩ
Output level: Approx. 100 mV rms*
2
5
AF/IF
(IF=12 kHz)*
3
Fixed AF detector or receive IF (12 kHz)
signal output.
Output impedance: 4.7 kΩ
Output level: 100~300 mV rms*
4
6 SQL S
Squelch output.
Grounded when the squelch opens.
SQL open: Less than 0.3 V/5 mA
SQL closed: 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 1A
8 ALC
ALC voltage input.
Connected in parallel with ACC 2 pin 5.
Input level: –4~0 V
Input impedance: More than 10 kΩ
ACC 2
PIN
No.
NAME DESCRIPTION SPECIFICATIONS
7-pin
1
2
3
4
5
6
7
Rear panel
view
1 8 V Regulated 8 V output.
Output voltage: 8 V ±0.3 V
Output current: Less than 10 mA
2 GND Connects to ground. Connected in parallel with ACC 1 pin 2.
3 SEND*
1
Same as ACC 1 pin 3.
Input voltage (RX): 2.0~20.0 V
Input voltage (TX): –0.5~+0.8 V
Current flow: Maximum 20 mA
4 BAND
Band voltage output.
(Varies with the selected amateur band)
Output voltage: 0~8.0 V
5 ALC Same as ACC 1 pin 8.
Input level: –4~0 V
Input impedance: More than 10 kΩ
6 TRV
Activates [X-VERTER] input/output when
“HIGH” voltage is applied.
Input impedance: More than 10 kΩ
Input voltage: 2~13.8 V
7 13.8 V Same as ACC 1 pin 7. Output current: Maximum 1A
*
1
When the SEND terminal controls an inductive load,
such as a relay, a counter-electromotive force can
malfunction or damage the transceiver. To prevent this,
we recommend adding a switching diode, such as an
1SS133, on the load side of the circuit to absorb the
counter-electromotive force. When the diode is added, a
delay in relay switching may occur. Be sure to check its
switching action before operating.
(Example) ACC 1/2 socket
linear amplifier
Relay
e SEND
u 13.8 V
*
2
The MOD input level is adjustable in the MENU. 100 mV
rms is at 50% as the default.
MENU » SET > Connectors > ACC MOD Level
*
3
The AF/IF (IF=12 kHz) settings are selectable to output
a 12 kHz IF signal in the MENU. In that case, you can
listen to the DRM broadcast with the application software
receiver that is installed onto your PC.
MENU » SET > Connectors > ACC Output Select
MENU » SET > Connectors > USB Output Select
MENU » SET > Connectors > LAN Output Select
*
4
The AF/IF (IF=12 kHz) output level is adjustable in the
MENU. Approximately 200 mV rms is at the 50% as the
default.
MENU » SET > Connectors > ACC IF Output Level
MENU » SET > Connectors > USB IF Output Level
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