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78 Chapter 2

Test Descriptions

Instrument Noise Figure

Test Procedure

NOTE Throughout the Instrument Noise Figure Test Procedure the term ‘the

Test Record’ refers to the Instrument Noise Figure Test Record detailed

in the relevant Appendix for the model number being tested

Step 1. Connect the test equipment as shown in Figure 2-21 on page 77.

Step 2. Ensure that the preset is set to factory settings (press the

System key,

then

More, Power On/Preset, Power On (Preset) and Preset (Factory)).

Step 3. Press the

Preset key on the NFA and wait for the preset routine to finish.

Step 4. Load the noise source ENR calibration file from diskette (A:) or from the

NFA’s internal memory (C:). Alternatively, create an ENR file from the

data supplied on the noise source label (refer to the Noise Figure

Anaylzers NFA Series User’s Guide for more details). Do not calibrate

the source. The NFA should display

Uncorrected in the active window.

Step 5. Configure the NFA as follows:

1. Set the measured result to Noise Figure (press the

Result key, then

Noise Figure).

2. Select a single graphical display of Noise Figure (press the

key).

3. Set sweep to single (press the

Sweep key, then Sweep Mode: single).

4. Set the frequency mode to sweep (press the

Frequency/Points key, then

Freq Mode and Sweep).

5. Set the start frequency (press the

Frequency/Points key, then Start, 1,

0, MHz).

Keysight NFA Series User Manual

Questions and Answers: