Receiver Calibration

Receiver calibration is only used for absolute measurements. The receiver calibration is divided into the test receiver (A, B) calibration and the reference receiver (R1, R2) calibration (See Figure 31). The calibration procedure is different for these receivers.

1. Test receiver calibration

When you perform absolute power measurements (See section 4.7.3), the gain of receivers is factory calibrated to test port on the front panel.

In practice, the power is measured at test port inputs made by the fixture producing losses. The test receiver calibration enables the user to measure the power at port inputs with higher accuracy.

The receiver calibration is performed by sending the calibration signal from the source port to the calibrated port input. The receiver calibration requires the connection between the both test ports using THRU connection.

To make the receiver calibration most accurate, first perform power calibration on the source port. If the source power calibration was not performed, to get good results you need to connect the calibrated port to the source port on the front panel.

2. Reference receiver calibration

Unlike test receivers, the reference receiver measures the output power of its port. Supplying a signal from a different port is meaningless for a reference receiver. That is why the power source in reference receiver calibration is the reference receiver itself, no matter which port is assigned to be a source.

3. General comments

After the receiver calibration is complete, receiver correction automatically turns on. Later the user can disable or enable again the receiver correction function.

The power calibration is performed for each port and each channel individually.

Receiver Calibration Procedure

Connect a THRU between the receiver port and the source port if test receiver calibration is performed.

Receiver Correction Setting

| | | To enable/disable receiver correction, use the following softkeys: | | --- | --- | --- |