2- 37
Making Mixer Measurements
Phase or Group Delay Measurements
10. Replace the "calibration" mixer with the device under test. If measuring group delay, 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.
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