Receiver Adjustment - Keysight N5221A Service Manual

Tests and Adjustments
Adjustments

Receiver Adjustment

The receiver calibration is used to adjust the network analyzer receivers for a flat response across its full
frequency range:
1. A power meter/sensor is connected to Port 1, as shown in
flatness.
2. A cable is inserted between the power sensor and the test port, as shown in
reference for the cable.
3. The same cable is connected between test port 1 and test port 2, as shown in
from Port 1 is used to adjust the "B" receiver at Port 2.
The adjustment is repeated using a signal from Port 2 to adjust the "A" receiver at Port 1.
Data obtained during this adjustment are stored in the mxcalfile_pxx files in flash memory on the test set
motherboard, with a backup copy stored on the hard disk drive. The data are used in subsequent
measurements.
Solid state drives can be swapped or replaced without concern for the mxcalfile_pxx files. If the test set
motherboard is replaced, the PNA firmware will automatically create new primary mxcalfile_pxx files from
the backup copies on the hard drive.
These files can be recreated by performing another receiver calibration adjustment.
Equipment Used for the Receiver Adjustment
Equipment Type
Power meter
Power sensor, 3.5 mm
Adapter, 3.5 mm (f) to 3.5 mm (f)
RF Cable, 3.5 mm (f) to 3.5 mm (f)
Procedure
1. Connect the equipment as shown in
and the power meter.
3-44
Figure
Model or 
Part Number
E4418B/E4419B
E4413A
83059B
85131C
Figure 3-15. Connect a GPIB cable between the network analyzer
PNA Series Microwave Network Analyzers
3-15, to establish a reference for
Figure 3-16, to establish a
Figure 3-17, and a signal
Alternate Model Part
Number
E4418A/E4419A
8485A
85052-60012
85131E
Service Guide N5222-90001
N5221A/22A