LO Feedthru Adjustment

This adjustment applies to the following models with firmware below A.09.00:

All adjustments will require the CFG Option. Refer to the CFG Option section for more information.

The SA calibration consists of five different adjustments that should be performed in succession in the following order. For more information, click here.Closed

  1. LO Feedthru

  2. Absolute Amplitude

  3. Frequency Response

  4. Attenuator Slope

  5. IF Frequency Response

The purpose of this adjustment is to reduce the LO power level to avoid ADC overload caused by high LO power.

Related test:

none

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

E9304A Opt H20

Power Splitter

11667B

Power Sensor Cable

11730A

BNC Cable

8120-2582

Coaxial Cable

11500E

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

1250-1743

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

 

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

LO Feedthru Adjustment Setup