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78
9
CONNECTIONS AND INSTALLATION
■
Connector information
ACC
Pin
Pin name
Description
Specification
1
CWK
CW and FSK keying input�
Input level:
–0�5 to 0�8 V
2
AF GND
Ground line for AF signal�
–
3
SEND
Input/Output pin�
Ground this pin to transmit�
Ground level:
–0�5 to 0�8 V
Input current:
Less than 20 mA
4
MOD
Modulator input�
Usable when pin 3 is grounded�
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Input level:
Approximately
100mV rms
5
AF
AF detector output�
Fixed, regardless of [VOL] position�
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Output level:
100–300 mV rms
6
NC
No connection�
–
7
13�6 V
13�6 V output when power is ON�
Output current:
Maximum 1 A
8
ALC
ALC voltage input�
Control voltage:
–3 to 0 V
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*
DC GND
Common ground�
–
MICROPHONE Pin
Pin name
Description
Specification
1
MIC+
Audio input from the microphone
element�
Input impedance:
2
NC
No connection�
–
3
AF1
AF output controlled with [VOL]�
Connected to pin 4 in the microphone�
–
4
AF2
AF input�
Connected to pin 3 in the microphone�
–
5
PTT
PTT switch input�
When grounded, transmits�
6
GND
Connected to the ground�
–
7
MIC–
Coaxial ground for MIC+�
–
8
AF–
Coaxial ground for AF1 and AF2�
–
TUNER
Pin
Pin name
Description
Specification
1
KEY
Key signal input�
–0�5 to 0�8 V during tuning�
2
START
Start/Through signal output�
Pulled up 8 V, 0 V (100 msec) as a start
signal�
3
13�6 V
13�6 V output�
Maximum current:
2 A
4
E
Negative ground�
Ground terminal for above signals�
DC 13.6 V
Pin
Pin name
Description
Specification
1–3
+
DC input
+
�
Maximum power consumption:
30 A typical�
4–6
_
DC input
_
�
–
1
2
3
4
5
6
7
8
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4
3
2
1
1 2
4
6
3
5
Summary of Contents for IC-M803
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