Freq Resp Non-Ref Atten Preamp On Check Utility

Frequency Response (a.k.a. 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 PXIe signal analyzer tuning range.

This utility can be used to verify the frequency response preamp on adjustments at attenuation settings other than 0 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

Low power microwave power sensor

  • 2 required

8485D

Power splitter

11667B

Attenuator, 30 dB fixed

11708A

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 8485D 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 On Check Utility Setup