Onwa KR-1338, Service Manual

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AUTOMATIC TUNING
There are two types of automatic tuning: peak search and short search. The tuning
voltage differs from model to model.
KR-1338/1668 : 5 V to 28 V
Peak search: Tuning voltage (TUNING), point in the figure below, is searched
in the tuning voltage range 5V to 28V. Tuning In voltage
(TUNING IND) is maximum at point .
Search conditions: After initial tuning adjustment.
Search time: 3 sec approx
Short search:
Maximum tuning indicator voltage is searched in the tuning
voltage range of 2.5V.
1)After initial tuning adjustment.
2)When tuning method is switched from manual to automatic.
3)When the radar is switched from ST-BY to TX.
4)When a range where pulselength is changed from short to middle
and from middle to long is selected.
Tracking:
After short search, tracking takes place.
Tracking voltage: 0 V to 32 V
dicator
A
A
A
KR-1338/1668
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