Berkeley Varitronics Systems RedFrog User Manual page 5

Touch this button to change the input frequency measured. You
will be taken to a numeric keypad FREQUENCY INPUT
screen where you enter in any frequency between 700 MHz and
6000 MHz with accuracy of 5 places to the right of the decimal.
This indicates the reflected power in dBm.
This indicates the VSWR (Voltage Standing Wave Ratio)
Power can be displayed in dBm or Watts. This can
be toggled on or off in the OPTIONS screen.
This indicates the OFFset of forward power. Touch
this button to change the forward power OFFset.
Adjust the number of AVG. samples in the
OPTIONS screen
This horizontal scale represents the power measured
from 0 dBm through +54 dBm.
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