Receiver Calibration Adjustment - Agilent Technologies PNA Series 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 the two test ports, as shown in
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 (where xx is a 1 or 2 digit number). 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.
These files can be recreated by performing another receiver calibration adjustment.
Equipment Used for the Receiver Calibration Adjustment
Equipment Type
Power meter
Power sensor, Type-N
Power sensor, 2.4 mm
Power sensor, V-Band
a
Adapter WR-15 to 1.85 mm (m)
Adapter, 2.4 mm (f) to 2.4 mm (f)
Adapter, Type-N (f) to 2.4 mm (f)
Adapter, 1.85 mm (f) to 1.85 mm (f)
Test cable, 2.4 mm (f) to 2.4 mm (f)
Test cable 1.85 mm (f) to 1.85 mm (f)
a. This sensor and adapter must be calibrated together by the Agilent factory. The
data supplied is only valid as long as the sensor and adapter remain connected.
b. The 1.85 mm connector has the same ruggedness and is compatible with the
2.4 mm connectors. 1.85 mm and 2.4 mm adapters are interchangeable.
3-44
Model or
Part Number
E4418B/E4419B
8482A
8487A
a V8486A
V281B
11900B
b 11903B
85058-60114
85133C
N4697E
PNA Series Microwave Network Analyzers
Figure 3-17, to establish a
Figure
Alternate Model
Part Number
E4418A/E4419A
None
None
None
None
85056-60007
None
None
85133E
N4697-60200
Service Guide E8361-90001
E8361A
Figure 3-18,
3-19, and a