Freq Resp Below 3.6 GHz Preamp On Adjustment

This adjustment applies to the following models equipped with Preamplifier:

In this adjustment flatness corrections are turned off, and amplitude error versus frequency is measured from 100 kHz to 3.6 GHz. The data is then normalized to 50 MHz to generate corrections relative to 50 MHz. The data is then stored in the analyzer memory.

The flatness correction points from 50 MHz to 3.60 GHz are determined by the Adaptive Flatness process. The Adaptive Flatness process manipulates the uncorrected flatness response to generate a custom list of frequency correction points for each instrument. This procedure assumes the adaptive flatness correction points have been created. Below 50 MHz the correction frequencies are fixed at:

  • 100 kHz

  • 500 kHz

  • 5 MHz

  • 16.5 MHz

  • 200 kHz

  • 800 kHz

  • 8 MHz

  • 25 MHz

  • 300 kHz

  • 1 MHz

  • 10 MHz

  • 32 MHz

  • 400 kHz

  • 2 MHz

  • 13.5 MHz

  • 41 MHz

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Required Test Equipment

Test Equipment

Recommended Model Number

RF Signal Generator

PSG Models
(see equipment list)

Function Generator

33622A

Power Meter

N1914B

RF Power Sensor
(2 required)

N8482A

RF Power Splitter

11667A

20 dB Fixed Attenuator

8491A Option 020

Power Sensor Cable
(2 required)

11730A

BNC Cable (2 required)

8120-1840

Type-N Cable

11500C

BNC (f) to SMA (m) adapter

83059B

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

1250-1200

Type-N (m) to BNC (f) adapter

1250-1476

BNC Tee (f-m-f)

1250-0781

3.5 mm (f) to Type-N (f) adapter
(for 3.5 mm source)

1250-1745

2.4 mm (f) to Type-N (f) adapter
(for 2.4 mm source)

11903B

Connection Setups

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

50 MHz to 3.6 GHz Adaptive Flatness Setup

 

Power Meter Calibration

 

Frequency Response 10 MHz to 3.6 GHz (Preamp On)
Splitter Characterization

 

Frequency Response 10 MHz to 3.6 GHz (Preamp On)
Adjustment Setup

 

Frequency Response 100 kHz to 10 MHz (Preamp On)
Splitter Characterization

 

Frequency Response 100 kHz to 10 MHz (Preamp On)
Adjustment Setup