IF Frequency Response UWBIF Check Utilities

This adjustment applies to the following models:

  • UXA N9041B models will also run a separate test on Input 2.

This procedure should only be performed on instruments that are equipped with Wide IF (Option B2X, B5X, or H1G). The intent is to detect if the IF Frequency Response UWBIF adjustment needs to be run. (Adjustments are not available for the N9041B). Functional limits are placed on the test results, and no uncertainties are applied to the test result.

In this procedure, a test signal of –10 dBm is applied to the signal analyzer. A reference amplitude is taken at the center frequency. The source frequency is then changed to a series of offset frequencies within the span of interest. At each offset frequency the source amplitude is maintained at –10 dBm, and the amplitude is measured by the signal analyzer. The test is repeated for one test frequency within each of the frequency bands. Only bands 2 and above are tested. (Bands 0 and 1 are tested with the IF Frequency Response UWBIF Performance Test.)

Required Test Equipment

Test Equipment

Recommended Model Number

Microwave Signal Generator #1

PSG Models
(see equipment list)

Power Meter

N1914B

Microwave Power Sensor

  • For options ≤ 526
  • 2 required

N8485A 

Microwave Power Splitter

  • For options ≤ 526

11667B

Millimeter Power Sensor

  • For options > 526
  • 2 required

N8487A 

Millimeter Power Splitter

  • For options > 526

11667C

Cable, 3.5 mm (m) to 3.5 mm (m)

  • For options ≤ 526

11500E

Cable, 2.4 mm (f) to 2.4 mm (m)

  • For options > 526

8120-6164

BNC Cable

8120-1840 

Adapter, 3.5 mm (f) to 3.5 mm (f)
(for 3.5 mm source)

  • For options ≤ 526

83059B

Adapter, 3.5 mm (f) to 2.4 mm (f)

  • For options ≤ 526

11901B

Adapter, Type-N (m) to 3.5 mm (m)

  • For options ≤ 526

1250-1743

Adapter, 2.4 mm (f) to Type-N (m)
(N8487A adapter)

08487-60001

Adapter, 3.5 mm (f) to Type-N (m)
(N8485A adapter)

08485-60005

Connection Setups

In the following setups, cables are designated as solid lines and direct connections are designated as dashed lines.

Power Meter Calibration

 

Power Splitter Characterization

 

Power Splitter Characterization, millimeter power splitters

 

IF Frequency Response UWBIF Check Setup

IF Frequency Response UWBIF Check Setup, millimeter power splitters

 

IF Frequency Response UWBIF Check Setup, Input 2
(N9041B only)