Receiver Calibration Adjustment - Agilent Technologies N5230A Service Manual

Tests and Adjustments
Adjustments

Receiver Calibration 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
reference for flatness.
2. A cable is inserted between the power sensor and the test port, as shown in
to establish a reference for the cable.
3. The same cable is connected between test port 1 and test port 2, as shown in
3-17, and a signal 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 on the hard disk
drive. The data are used in subsequent measurements.
If the hard disk drive is replaced, these mxcalfile_pxx files will be lost. Therefore, they
should be backed up (saved on a floppy disk) so that they can be restored. If using multiple
disk drives (e.g. classified and general usage), then these files must be replaced on each
individual disk drive.
These files can be recreated by performing another receiver calibration adjustment.
Equipment Used for the Receiver Calibration 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
network analyzer and the power meter.
3-38
PNA Series Microwave Network Analyzers
Model or
Part Number
E4418B/E4419B
E4413A
83059B
85131C
Figure 3-15. Connect a GPIB cable between the
Figure 3-15, to establish a
Figure
Figure
Alternate Model
Part Number
E4418A/E4419A
8485A
85052-60012
85131E
Service Guide N5230-90014
N5230A
3-16,