Freq Resp Non-Ref Atten Preamp Off Check Utility

Frequency Response (aka. Flatness) is defined as the amplitude deviation from the reference amplitude at 50 MHz. This utility measures the frequency response across all attenuator steps at several frequencies across the CXA-m tuning range. This utility can be used to verify the frequency response preamp off adjustments at attenuation settings other than 10 dB. The frequency response data is then written to a text file for review

Required Test Equipment

Test Equipment

Recommended Model Number1

Microwave signal generator #1

PSG models
(see main equipment list)

Power meter

N1914A

Microwave power sensor

  • 2 required

N8485A CFT

Power splitter

11667B

Cable, BNC (m) to SMB (f)

8121-2063

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

11500E

Adapter, 3.5 mm (m) to 3.5 mm (m)2

83059A

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

  • For 3.5 mm source

83059B

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

  • For 2.4 mm source

11901B

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

  • For the N8485A power sensor

08485-60005
  1. Refer to the main equipment list for a list of alternative models (if available).
  2. The 3.5 mm (m) to 3.5 mm (m) adapter between the power splitter and the DUT is critical in this utility. Proper connector care and torqueing practices must be followed in order to insure optimal performance.

Connection Setups

Power Meter Calibration

Splitter Characterization Setup

 

Freq Resp Non-Ref Atten Preamp Off Check Setup