IF Frequency Response UWBIF Full Bypass Path Adjustment

This adjustment applies to the following models:

• PXA — N9030B with frequency options > 526, and options B2X or B5X, MPB, LNP, and FBP

• UXA — N9040B with frequency options > 526, and options B2X or B5X or H1G, MPB, LNP, and FBP

The goal of this adjustment is to generate corrections for the IF band shape in Full Bypass Path (Option FBP). Option FPB allows both LNP and MPB to be enabled. A separate set of IF corrections are necessary for this RF Path. Since Full Bypass Path only affects frequencies above 3.6 GHz, only Bands 1, 2, 3, 4, 5, 6 are adjusted. This adjustment takes several hours, so it was separated from the same adjustment for Preselector Bypass Path (Option MPB).

In this adjustment, a –10.00 dBm signal is applied to the DUT. A reference amplitude is taken at the IF center frequency. The source frequency is then changed to a series of offset frequencies within the span of the IF. At each offset frequency, the input amplitude is maintained at –10.00 dBm, and the signal amplitude is measured by the DUT. The offset amplitude is subtracted from the reference amplitude. The resulting envelope created by all the offset amplitudes is the uncorrected IF Frequency Response.

Click here for troubleshooting.

Required Test Equipment

Network Analyzer Calibration Procedure

The network analyzer used in this adjustment must be calibrated prior to running the adjustment. The calibration will need to be repeated once every three days or if the connectors or cables have been disturbed. If it's been within the three day time frame and the connectors and cables have not been disturbed, then the network analyzer calibration is not necessary and you may proceed with the adjustment.

For a list of required equipment and calibration instructions to perform the network analyzer calibration, refer to Network Analyzer Freq Sweep Calibration.

Connection Setups