Icom IC-7600 Instruction Manual - Page 31

■ Accessory connector information, ACC 1, PIN No., DESCRIPTION, SPECIFICATIONS

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2 INSTALLATION AND CONNECTIONS ■ Accessory connector information ACC 1 2 45 183 67 PIN No. 1 2 3 4 5 6 7 8 NAME RTTY GND SEND MOD AF SQLS 13.8 V ALC DESCRIPTION SPECIFICATIONS Controls RTTY keying "High" level "Low" level Output current : More than 2.4 V : Less than 0.6 V : Less than 2 mA Connects to ground. Connected in parallel with ACC 2 pin 2. Input/output pin. Goes to ground when transmitting. When grounded, transmits. Ground level Output current Input current (Tx) : -0.5 V to 0.8 V : Less than 20 mA : Less than 200 mA Connected in parallel with ACC 2 pin 3. Modulator input. Connects to a modulator Input impedance : 10 k˘ Input level : Approx. 100 mV rms AF detector output. Fixed, regardless of [AF] position in default settings. (see notes below) Output impedance Output level : 4.7 k˘ : 100-300 mV rms Squelch output. SQL open Goes to ground when squelch opens. SQL closed : Less than 0.3 V/5 mA : More than 6.0 V/100 µA 13.8 V output when power is ON. Output current : Max. 1 A Connected in parallel with ACC 2 pin 7. ALC voltage input. Control voltage : -4 V to 0 V Input impedance : More than 10 k˘ Connected in parallel with ACC 2 pin 5. ACC 2 2 45 1 3 67 PIN No. 1 2 3 4 5 6 7 NAME 8 V GND SEND BAND ALC TRV 13.8 V DESCRIPTION SPECIFICATIONS Regulated 8 V output. Output voltage Output current : 8.0 V ±0.3 V : Less than 10 mA Same as ACC 1 pin 2. Same as ACC 1 pin 3. Band voltage output. (Varies with amateur band) Output voltage : 0 to 8.0 V Same as ACC 1 pin 8. Activates [X-VERTER] input/output Input impedance : More than 10 k˘ when "HIGH" voltage is applied. Input voltage : 2 to 13.8 V Same as ACC 1 pin 7. 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. 123) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 24

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■
Accessory connector information
ACC 1
PIN No.
NAME
DESCRIPTION
SPECIFICATIONS
1
2
3
4
5
6
7
8
1
RTTY
Controls RTTY key±ng
“H±gh” 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 ±n parallel w±th ACC 2 p±n 2.
3
SEND
Input/output p±n.
Goes to ground when transm±tt±ng.
When grounded, transm±ts.
Ground level
Output current
Input current (Tx)
: –0.5 V to 0.8 V
: Less than 20 mA
: Less than 200 mA
Connected ±n parallel w±th ACC 2 p±n 3.
4
MOD
Modulator ±nput.
Connects to a modulator
Input ±mpedance
Input level
: 10 k
˘
: Approx. 100 mV rms
5
AF
AF detector output.
F±xed, regardless of [AF] pos±t±on ±n
default sett±ngs. (see notes below)
Output ±mpedance
Output level
: 4.7 k
˘
: 100–300 mV rms
6
SQLS
Squelch output.
Goes to ground 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 ±s ON.
Output current
: Max. 1 A
Connected ±n parallel w±th ACC 2 p±n 7.
8
ALC
ALC voltage ±nput.
Control voltage
Input ±mpedance
: –4 V to 0 V
: More than 10 k
˘
Connected ±n parallel w±th ACC 2 p±n 5.
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 ²0.3 V
: Less than 10 mA
2
GND
Same as ACC 1 p±n 2.
3
SEND
Same as ACC 1 p±n 3.
4
BAND
Band voltage output.
(Var±es w±th amateur band)
Output voltage
: 0 to 8.0 V
5
ALC
Same as ACC 1 p±n 8.
6
TRV
Act±vates [X-VERTER] ±nput/output
when “HIGH” voltage ±s appl±ed.
Input ±mpedance
Input voltage
: More than 10 k
˘
: 2 to 13.8 V
7
13.8 V
Same as ACC 1 p±n 7.
NOTE:
If the CW s±detone level l±m±t or beep level
l±m±t ±s ±n use, the CW s±detone or beep tone de-
creases from the f±xed level when the [AF] control
±s rotated above a spec±fied level. (p. 123)
24
2
INSTALLATION AND CONNECTIONS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21