Vectronics PM-30 - Manual (Page 3)

PM-30 SWR/Power Meter Owner's Manual
3
CALIBRATION
To null the directional coupler, apply power through the
RF INPUT
connector, terminating the output in 50
Ω
. Adjust the power level for
50-100 Watts on the 300 W range. Looking from the front of the meter,
adjust the left-hand trim capacitor on the directional coupler board for a
null or minimum meter deflection. Reverse the input and output cables
and again apply power. Adjust the right-hand trim capacitor for a null
on the other meter.
Using a calibrated source, adjust the meter with the internal trimpots as
label in the following diagram:
TECHNICAL ASSISTANCE
If you have any problem with this unit first check the appropriate
section of this manual. If the manual does not reference your problem
or your problem is not solved by reading the manual you may call
VECTRONICS at 601-323-5800. You will be best helped if you have
your unit, manual and all information on your station handy so you can
answer any questions the technicians may ask.
You can also send questions by mail to VECTRONICS, 1007 HWY 25
South, Starkville, MS 39759 or by FAX to 601-323-6551. Send a
complete description of your problem, an explanation of exactly how
you are using your unit, and a complete description of your station.