2-38
Making Mixer Measurements (Option 089 Only)
Phase or Group Delay Measurements
10.Replace the "calibration" mixer with the device under test. If measuring group d elay, set
the delay equal to the "calibration" mixer delay (for example −0.6 ns) by pressing:
11.Scale the data for best vertical resolution.
Figure 2-25 Group Delay Measurement Example
The displayed measurement trace shows the device under test delay, relative to the
"calibration" mixer. This measurement is also useful when the device under test has
built-in filtering, which requires >30 dB range (the maximum of R input) . PORT 1 to PORT
2 range is >100 dB.
Scale Ref
ELECTRICAL DELAY
−06 G/n
Scale Ref
AUTOSCALE