174 Chapter2
Making Adjustments
28. Correcting for Absolute Amplitude Accuracy for Option 051
12.Read the amplitude error from the display and record it in
Table 2-28 for the 8593E, 8594E, 8595E, and 8596E spectrum
analyzers. Use Table 2-29 for 8591E spectrum analyzers or 8591C
cable TV analyzers.
Repeat step 10 and step 11 for the next frequency indicated in
Table 2-28 or Table 2-29 until all four points have been recorded.
13.Subtract the Average Error, calculated in step 9, from each
Amplitude ERROR from Table 2-28 or Table 2-29, then record
column 3 as the Corrected Flatness ERROR.
Do not subtract more than 0.5 dB from the Amplitude ERROR. If the
Average Error is more than 0.5 dB, it may not be possible to make
corrections during the adjustment.
14.Using
⇓ (step down key), set the frequency displayed on the analyzer
to 1.380 GHz (1.410 GHz for 8591E spectrum analyzers or 8591C
cable TV analyzers).
Table 2-28 Frequency Response Errors: 8593E, 8594E, 8595E, 8596E
Frequency Amplitude
ERROR
Corrected
Flatness
ERROR
1.380 GHz _________________ _________________
1.452 GHz _________________ _________________
1.524 GHz _________________ _________________
1.596 GHz _________________ _________________
Table 2-29 Frequency Response Errors: 8591C and 8591E
Frequency Amplitude
ERROR
Corrected
Flatness
ERROR
1.410 GHz _________________ _________________
1.447 GHz _________________ _________________
1.484 GHz _________________ _________________
1.521 GHz _________________ _________________