2. The Peak Reading feature may be switch on/off by using the
pushbutton switch labeled POWER PEAK/AVG. Peak reading is
activated when the switch is locked in.
3. SWR is indicated at the intersection of the two meter pointers.
While transmitting, read the SWR from the red SWR line nearest the
intersecting point.
CALIBRATION
To null the directional coupler, apply power through the RF INPUT
connector, terminating the output in 50Ω. 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:
Summary of Contents for PM-30
Page 4: ...PM 30 SCHEMATIC...
