Total Abs Amp Accy High Freq Test

This test applies to the following models:

In this test a signal is split and applied to the DUT and to a power meter. The absolute amplitude accuracy is the difference between the power meter reading and the FieldFox reading. 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. The buried sensor calibration essentially trades power meter errors for splitter tracking errors.

This test checks frequencies above 9 GHz.

Test type:

performance

Related specification:

Total Absolute Amplitude Accuracy

Related adjustment:

Frequency Response

Required Test Equipment

Test Equipment

Recommended Model Number
(see main equipment list for alternative models)

Signal Generator #1

E8257D with options:

  • 550
  • 1E1
  • 1EA or 1EU

  • UNR or UNX or UNY

Power Meter

N1914A

Power Sensor
(2 required)

N8485A

Power Splitter, 3.5 mm

11667B

Cable, power sensor

11730A

Cable, BNC

8120-2582

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

11500E

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

1250-1744

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

  • for 3.5 mm PSG

83059B

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

  • for 2.4 mm PSG

11901B

 

The Total Absolute Amplitude Accuracy specification requires very tight measurement uncertainties for this test. Consequently, the splitter and power sensors used in this test must be 26.5 GHz, 3.5 mm.

 

Connection Setups

The following notes apply to illustrations in the FieldFox Help:

  • Only a single representative model will be shown.
  • Some illustrations may differ than those in TME.

  • For procedures that apply to multiple ports, illustrations will show the setup on only one test port.

Power Meter Calibration

Splitter Characterization

Total Abs Amp Accy High Freq Test Setup