NARDA 8718B - Manual (Page 36)

35 Chapter 5 Using the Menu System
Time Averaging OFF
Unit of Measure Last Used unit of measure will be in use
if previous and current probe both have
flat or shaped frequency response. If
current probe is shaped, unit will be %
of STD. If current probe is flat and
previous probe was shaped, then unit
will be mW/cm 2 .