Measurement of rf voltage at levels below 30 mV 1, 3, and 10 FULL SCALE mV.
For accurate measurements of rf voltages at levels using the 1, 3, and 10 FULL SCALE mV pushbutton ranges, zero
Stray pick-up of rf in areas where strong rf fields exist may cause erratic
reading on the digital millivoltmeter when the FULL SCALE 1 mv and 3
pushbutton ranges are used.
1. Attach 5O-OHM ADAPTER to RF PROBE. Disconnect rf input from 50-OHM ADAPTER.
Press FULL SCALE 1 mV pushbutton.
Adjust ZERO control for ZERO on dBm meter and adjust so that negative (-) sign on the display just disappears.