Freq Resp Above 3.6 GHz Preamp Off Performance Test

Frequency response (aka. Flatness) is defined as the amplitude deviation from the reference amplitude at 50 MHz. The complete EMI receiver frequency response is measured with several tests. The model and options of the DUT will determine which tests are run from the list below:

A “buried power sensor” technique is used to characterize the tracking error of a power splitter in order to avoid the relatively large specified tracking error. This technique reduces the measurement uncertainty to verify the frequency response specification for the 3.6 GHz to 44 GHz range. The buried sensor calibration is valid for eight hours.

This test determines the relative frequency response over the frequency range from 3.6  GHz to 44 GHz.

Click here for troubleshooting.

Required Test Equipment

Test Equipment

Model Number1

Microwave Signal Generator #1

PSG Models
(see equipment list)

Power Meter

N1914A

Microwave Power Sensor

  • 2 required
  • For Options 508 and 526

N8485A CFT

Microwave Power Splitter

  • For Options 508 and 526

11667B 

Millimeter Power Sensor

  • 2 required
  • For Option 544

N8487A CFT

Millimeter Power Splitter

  • For Option 544

11667C

Cable, BNC

8120-1840

Cable, coaxial 3.5 mm

  • For Options 508 and 526

11500E

Cable, coaxial 2.4 mm

  • For Option 544

8120-6164

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

  • For Options 508 and 526

1250-1743

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

  • For Options 508 and 526 when using a 3.5 mm source

83059B

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

  • For Options 508 and 526 when using a 2.4 mm source

11901B

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

  • 8485A adapter

08485-60005

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

  • 8487A adapter

08487-60001
  1. Refer to the main Required Equipment table for a list of alternative models.

Connection Setups

Power Meter Calibration

Splitter Characterization

 

Frequency Response Above 3.6 GHz Test Setup