Connector Information; Rf Deck; D Acc Sockets - Icom IC-7760 Basic Manual

13

CONNECTOR INFORMATION

RF Deck

D ACC sockets

Connect to devices to control an external unit or to control the transceiver.
Pin
ACC 1
No.
1
2
8-pin
3
2
4 5
1 3
8
6 7
4
Rear panel view
5
6
7
8
Pin
ACC 2
No.
1
7-pin
2
3
2
4 5
4
1 3
6 7
5
6
Rear panel view
7
* 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 a 1SS133, on the load side of the
circuit to absorb the counter-electromotive force.
LWhen 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
3 SEND
7 15 V
Relay
Switching diode
Name Description
RTTY Controls RTTY keying.
Connects to ground.
GND
Connected in parallel with ACC 2 pin 2.
An external unit controls
Input/output
the transceiver. When this
pin.
pin goes to ground, the
SEND Connected in
transceiver transmits.
parallel with
The pin goes low when
ACC 2 pin 3.
the transceiver transmits.
Modulator input.
MOD Connects to the internal modulator
circuit.
Fixed AF detector or receive IF (12 kHz)
AF/IF 12k* 3
signal output.
Squelch output.
SQL S
Grounded when the squelch opens.
15 V output when power is ON.
15 V
Connected in parallel with ACC 2 pin 7.
ALC voltage input.
ALC
Connected in parallel with ACC 2 pin 5.
Name Description
8 V Regulated 8 V output.
Connects to ground.
GND
Connected in parallel with ACC 1 pin 2.
SEND* 1 Same as ACC 1 pin 3.
Band voltage output.
BAND
(Varies with the selected amateur band)
ALC Same as ACC 1 pin 8.
Activates [X-VERTER] input/output when
TRV
"HIGH" voltage is applied.
15 V Same as ACC 1 pin 7.
To a non-Icom linear
amplifier
High level:
Low level:
Output current:
Input voltage (RX): 2.0 ~ 20.0 V
Input voltage (TX): –0.5 ~ +0.8 V
Current flow:
Output voltage (TX): Less than 0.1 V
Current flow:
Input impedance:
Output level:
Output impedance: 4.7 kΩ
Output level:
SQL open:
SQL closed:
Output current:
Input impedance:
Input level:
Output voltage:
Output current:
Output voltage:
Input impedance:
Input voltage:
*
2 You can change the MOD input level.
L100 mV rms is at 50% as the default.
»
SET > Connectors > MOD Level > ACC MOD Level
MENU
* 3 You can change the AF/IF (IF=12 kHz) settings to output a 12 kHz
IF signal. In that case, you can listen to DRM communication with
the application software receiver that is installed onto your PC.
»
SET > Connectors > ACC AF/IF Output >
MENU
Output Select
* 4 You can change the AF/IF (IF=12 kHz) output level.
LApproximately 200 mV rms is at 50% as the default.
»
SET > Connectors > ACC AF/IF Output
MENU
13-1
Specifications
More than 2.4 V
Less than 0.6 V
Less than 2 mA
Less than 20 mA
Less than 200 mA
10 kΩ
100 mV rms* 2
100 ~ 300 mV rms* 4
Less than 0.3 V/5 mA
More than 6.0 V/100 μA
Less than 1A
10 kΩ
–4 ~ 0 V
Specifications
8 V ±0.3 V
Less than 10 mA
0 ~ 8.0 V
More than 10 kΩ
2 ~ 15 V