3-44 Keysight N5221A/22A Service GuideTests and AdjustmentsAdjustments3-2. Follow the instructions and prompts as they are displayed.Receiver AdjustmentThe receiver calibration is used to adjust the network analyzer receivers for aflat response across its full frequency range:1. A power meter/sensor is connected to Port 1, as shown in Figure 3-16, toestablish a reference for flatness.2. A cable is inserted between the power sensor and the test port, as shownin Figure 3-17, to establish a reference for the cable.3. The same cable is connected between test port 1 and test port 2, asshown in Figure 3-18, 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 inflash memory on the test set motherboard, with a backup copy stored on thehard disk drive. The data are used in subsequent measurements.Solid state drives can be swapped or replaced without concern for themxcalfile_pxx files. If the test set motherboard is replaced, the PNA firmwarewill automatically create new primary mxcalfile_pxx files from the backupcopies on the hard drive.These files can be recreated by performing another receiver calibrationadjustment.Equipment Used for the Receiver AdjustmentProcedure1. Connect the equipment as shown in Figure 3-16. Connect a GPIB cablebetween the network analyzer and the power meter.Equipment Type Model orPart NumberAlternate Model PartNumberPower meter E4418B/E4419B E4418A/E4419APower sensor, 3.5 mm E4413A 8485AAdapter, 3.5 mm (f) to 3.5 mm (f) 83059B 85052-60012RF Cable, 3.5 mm (f) to 3.5 mm (f) 85131C 85131E
