Icom AT-141 - 4 Control Cable Signals; Terminal Information

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4
8
CONTROL CABLE SIGNALS
8
Terminal information ■
Terminal Description
[KEY]
Key voltage. Grounded during tuning.
Maximum current drain 100 mA
[13.6]
13.6 V DC + input terminal.
Maximum current drain 2 A
[STAR]
Receives start voltage.
Maximum current drain 1 mA
[ANTC] Antenna current detector output.
[KEY]
[STAR]
[13.6]
[ANTC]
Start voltage [STAR] D
When a start voltage (less than 1 V) is received, the
AT-141 begins automatic tuning.
8
6
4
2
0
Time
More than
350 milliseconds
Approximately 7.5 V
Less than 1 V to
start tuning
Start
voltage
[V]
*For tuner through operation; Less than 250 milliseconds
Key voltage [KEY] D
During automatic tuning, the AT-141 grounds the key
voltage line, and the HF transceiver reduces output
power.
8
6
4
2
0
Time
Key
voltage
[V]
Grounded
Approximately 7.5 V
During automatic tuning