Boonton 4240 Series RF Power Meter
Table 3-1 Operating Controls, Indicators and Connections
(continued)
Reference #
Front Rear Nomenclature
Function
13 <REF Level> Key
Often relative measurements are required especially when measuring system gains
and losses. One key press of the Ref/Level key makes this easier and faster to
perform. Simply connect the active channel’s sensor to the input signal of the
system under test. Press the Ref/Level key and the reference level is set! Next
connect the sensor to the system output and read the gain or loss directly from the
reference level measurement.
The REF Level menu can be displayed by first pressing the
