Freq Resp Above 50 MHz AC Coupled Adjustment

This adjustment compensates for AC coupled flatness error above 50 MHz. In this adjustment, flatness corrections are turned off. The amplitude error versus frequency is measured from 50 MHz to 3 GHz (Option F03), 7.5 GHz (Option F07), 13.6 GHz (Option F13), or 26.5 GHz (Option F26) in DC coupled mode, followed by AC coupled mode. The difference of amplitude error between DC coupled mode and AC coupled mode is computed and stored in the analyzer memory as frequency/amplitude pairs.

Required Test Equipment

Test Equipment

Recommended Model Number1

Microwave signal generator #1

PSG models
(see main equipment list)

Power meter

N1914A

Microwave power sensor

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 adjustment. Proper connector care and torqueing practices must be followed in order to insure optimal performance.

Connection Setups

Power Meter Calibration

 

Freq Resp Above 50 MHz AC Coupled Adjustment Setup