Icom IC-7600, Инструкция по эксплуатации, Страница: 35 / 196

26
2
INSTALLATION AND CONNECTIONS
2
■
Accessory socket information
ACC 1
PIN No. NAME DESCRIPTION SPECIFICATIONS
1
2
3
4
5
6 7
8
1 RTTY Controls RTTY keying
“High” level
“Low” 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 par-
allel with ACC 2
pin 3.
An external equip-
ment controls the
transceiver.
When this pin goes
low, the transceiv-
er transmits.
Input voltage (TX)
Input voltage (RX)
Current flow : 2.0 V to 20.0 V
: –0.5 V to 0.8 V
: Max. 20 mA
The pin outputs
a low level
signal when
the transceiver
transmits.
Output voltage (TX)
Current flow : Less than 0.1 V
: Max. 200 mA
4 MOD
Modulator input.
Connects to the internal modulator
circuit.
Input impedance
Output level : 10 k ˘
: Approximately 100 mV rms
5 AF
AF detector output.
Fixed, regardless of [AF] position in
default settings. (see NOTE below)
Output impedance
Output level : 4.7 k ˘
: 100–300 mV rms
6 SQLS
Squelch output.
Grounded when the 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 : Max. 1 A
8 ALC
ALC voltage input.
Connected in parallel with ACC 2 pin
5.
Input impedance
Input level
: More than 10 k ˘
: –4 V to 0 V
NOTE: If the CW sidetone level limit or beep level limit is in use, the CW sidetone or beep tone decreases from
the fixed level when the [AF] control is rotated above a specified level. (p. 130)
ACC 2
PIN No. NAME DESCRIPTION SPECIFICATIONS
1
2
3
4
5
6 7
1 8 V Regulated 8 V output.
Output voltage
Output current : 8.0 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 selected 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 ˘
: 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
HSEND
i
13.8V
ACC
socket
Relay
Switching diode
To a non-Icom
linear amplifier
[Example]