Chapter 4 227
Calibration
Vector-Mixer Calibration
4. Calibration
4. Setting IF Frequency
Select IF frequency from RF+LO, RF-LO and LO-RF (2 in Figure 4-67), depending on the
IF frequency of the calibration mixer.
NOTE The number displayed in the Vector Mixer Characterization macro is the frequency set in
the E5070B/E5071B and read from it. You must also set the minimum IF frequency at
move than 0 kHz.
IF BW must be set to much smaller value than IF frequency.
5. Selecting a Calibration Kit
Select a calibration kit (3 in Figure 4-67).
NOTE The mechanical calibration kit displayed in the Vector Mixer Characterization macro is the
frequency registered in the E5070B/E5071B and read from it. If an ECal module is
connected to the E5070B/E5071B, ECal will be selected automatically.
6. Measuring Calibration Mixer with IF Filter (when using calibration kit)
Connect the calibration mixer to one of the test ports on which 1-port calibration has been
done, as shown in
Figure 4-68.
Figure 4-68 Connection of calibration mixer (with IF filter)
NOTE Select any port if full 2-port calibration is set.
NOTE As shown in Figure 4-68, we recommend that you characterize the calibration mixer with
an IF filter when the power splitter for distributing the LO signal is connected to the
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