Selecting The Input Attenuation Range - Agilent Technologies NFA Series Quick Reference Manual

Step 4. If required select an input attenuator range by pressing the
the
Input Cal
attenuation.
See "Selecting the Input Attenuation Range" on page 35 for mode details
on input attenuation.
Step 5. Press the
Calibrate

Selecting the Input Attenuation Range

When measuring a high-gain device you need to increase the input
attenuation. If you do not know the gain of the DUT, you can perform
calibration using the default range, note what error codes are presented
and then calibrate again using the greater attenuation values. If the
Noise Figure Analyzer continues to display error codes, there is a need to
add external attenuator pads and correct for this using the Loss
Compensation. This is explained in "Setting Loss Compensation" on
page 55.
If an error message occurs while calibrating, you need to recalibrate. For
a complete list of error codes see the User's Guide.
To select the input attenuation:
Step 1. Press the
Corr
Step 2. Press the
Input Cal
Step 3. Set the attenuator range using the
and select the attenuation values you want from the list.
Chapter 2
menu key to set the minimum and maximum input
key twice to initiate the calibration.
(Corrected) key.
menu key and select the attenuation range you want
Making Basic Measurements
Calibrating the Analyzer
and
Min Atten Max Atten
key and
Corr
menu keys,
35