User`s guide

Chapter 1 1-111
System Verification and Performance Tests
Performance Tests
NOTE The 8496A used for this test will have known attenuator errors for
attenuations up to 100 dB using a test frequency of 30 MHz. The
attenuation used as a reference is 0 dB. If the available calibration data
is not expressed as attenuation errors, it can be converted to such a form
by the following equation:
(actual attenuation) – (expected attenuation) = attenuator error
Actual attenuation values that are greater than the expected
attenuation values will result in positive errors. Actual attenuation
values that are less than the expected attenuation values will result in
negative errors.
Initial Calculations
1. Fill in the attenuator error values (refer to 0 dB attenuation) by
referring to the calibration data for the 8496A step attenuator. Refer
to the note on the previous page.
a. Find the column in the 8496A attenuation error table pertaining
to the attenuation errors for 30 MHz.
b. Starting with the 10 dB step in this column, write down the value
in the corresponding space in Table 1-3 for column B. This value
should be placed in the row for the 10 dB 8496A setting.
2. Continue transferring the remaining values of the 8496A attenuation
errors to column B in Table 1-3 on page 1-112.