Freq Resp Unpreselected Preamp On Adjustment

This adjustment applies to the following models equipped with Preamplier and Option MPB:

The Adaptive Flatness routine plots out the uncorrected frequency response on the analyzer trace. This is done by placing the analyzer trace in max hold then sweeping a source through the frequency band in 600 MHz "chunks". The data needs to be taken in 600 MHz chunks because the IF Image is present at +/– 322.5 MHz from the center frequency. The chunks are then stitched together to generate a trace for the entire frequency band. The trace can be seen as plot of conversion loss versus frequency. The trace data is then extracted from the analyzer and processed.

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Required Test Equipment

Test Equipment

Recommended Model Number

Microwave Signal Generator #1

PSG Models
(see equipment list)

Power Meter

N1914B

Microwave Power Sensor, low power

  • 2 required
  • Options ≤ 526

8485D

Microwave Power Splitter

  • Options ≤ 526

11667B

Millimeter Power Sensor, low power

  • 2 required
  • Option 543

8487D

Millimeter Power Splitter

  • Options > 526

11667C

30 dB Fixed Attenuator

11708A

Coaxial Cable, 2.4 mm

8120-6164

Coaxial Cable, 3.5 mm

11500E

BNC Cable

8120-1840 

Type-N (m) to 3.5 mm (m) adapter

1250-1743

3.5 mm (f) to 3.5 mm (f) adapter
(for 3.5 mm source)

83059B

3.5 mm (f) to 2.4 mm (f) adapter
(for 2.4 mm source)

11901B

3.5 mm (f) to Type-N (m)

  • 8485A adapter
  • Options ≤ 526

08485-60005

2.4 mm (f) to Type-N (m)

  • 8487A adapter
  • Options > 526

08487-60001

 

Connection Setups

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

Above 3.6 GHz Adaptive Flatness Setup

 

Power Meter Calibration

 

Splitter Characterization


 

Freq Resp Unpreselected Preamp On Adjustment Setup