The 37xxxE uses enhancements in the calibration to ensure a wide dy-
namic range. It automatically selects 1 kHz IF bandwidth and varies
the number of averages with the calibration device. Terminations re-
quire the most averages.
If desired, the Video IF bandwidth and number of averages can be
specified for the calibration measurements. Using 100 averages (Avg =
100) appears to be sufficient for most measurements.
To obtain the maximum performance from the 37xxxE for measure-
ments of attenuation, you can use the capability of the N discrete fre-
quency calibration to spot check measurements in the frequency band
of interest.
LOW LEVEL AND GAIN MEASUREMENTS

8-18 37xxxE OM