Total Abs Amp Accy Low Freq Preamp On 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.

The test limits for this preamp on version are based on measurements made on a population of known good instruments.

This test checks frequencies below 15 MHz.

Test type:

performance functional

Related specification:

Total Absolute Amplitude Accuracy

Required Test Equipment

Test Equipment

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

Function Generator

33622A

Power Meter

N1914A

Power Sensor
(2 required)

E9304A Opt. H20

Power Splitter, 3.5 mm

11667B

Cable, BNC

8120-2582

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

11500E

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

1250-1475

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

 

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.

Reference Power Sensor Calibration, Channel A

Buried Power Sensor Calibration, Channel B

Splitter Characterization

Total Abs Amp Accy Low Freq Test Setup