Basic Operation
R&S
®
ZVA-Z90E / -Z110E
23
Getting Started 1307.7197.62 ─ 08
Example:
In the example below, the frequency at the NWA "Port 1" has been increased by a 50
MHz offset. The converter source frequency is six times the NWA source frequency,
therefore a 300 MHz offset has been entered for "Converter Port 1". This ensures a
correct frequency axis during the power calibration.
Figure 3-3: Converter frequency and power settings (example: R&S
ZVA-Z110E)
3.7
Calibration
R&S
ZVA-Z90E and R&S
ZVA-Z110E allow for a variation of the output power by
changing the input power or setting an electronic attenuator. The latter requires option
R&S
ZVA-B8 on the R&S
ZVA. With these converter types a source power flatness cal-
ibration can be performed.
A source power calibration for a frequency converter requires an appropriate external
power meter, to be connected to the converter's waveguide flange; see
"Test Port Adapter (Waveguide Flange)"
on page 6. Waveguide power meters are con-
figured in the ordinary way using the "System Configuration > External Power Meters"
tab.
To perform the source power calibration, proceed as follows:
1. Connect the waveguide power meter and open the "Channel > Calibration > Start
Power Cal > Source Power Cal" dialog.
2. Select your converter and source port from the "Source" pull-down list (e.g. "Conv
1" for a frequency converter connected to NWA port 1).
3. Click "Modify Settings" and ensure that both "Flatness Cal" and "Reference
Receiver Cal" are checked.
4. If your test setup causes strong nonlinear effects, you can choose a "Convergence
Factor" different from one.
Calibration
