Specifications

3-8 Chapter 3
User Interface
Flatness Compensation Table
4. Turn off the corrections on the PSA.
[AMPLITUDE] > More 1 of 3 > Corrections > Apply Corrections > Off
5. Use Table 3-3 for the Source settings.
Procedure
1. Select 199 frequency points for use in the correction table. The first point should be 2.85
GHz and the final point should be the upper frequency limit of the PSA under test.
The PSA and the source will be set to each frequency chosen.
Repeat the following sequence of steps for each frequency on the PSA and Source in
generating the replacement correction table. The PSA and the source will be set to each
frequency chosen.
• [AMPLITUDE] > More 1 of 3 > Int Preamp Off
Adjust the source to display the input signal on the PSA screen. This should be at least 20
dB above the noise floor.
• [Peak Search]
• [Marker] > Delta
• [AMPLITUDE] > More 1 of 3 > Int Preamp On
Record the amplitude delta. Refer to Table 3-4 on page 3-9 for a sample table. The use
of a spreadsheet is helpful in recording the points.
NOTE Any adjustment points ≤ 3 GHz will need to be measured with the PSA
start frequency of 2.85 GHz and a stop frequency of 3.06 GHz in order
to insure that the instrument is in band 1.
Table 3-3 Source Instrument Settings
Setting Value
Frequency follows PSA frequency
Power Level –35 dBm