HP 8559A Operation And Service Manual page 82

PERFORMANCE TESTS
4.22. INPUT ATTENUATOR ACCURACY (Cont'd)
INPUT ATTEN
Setting Attenuator
Setting (dB)
I >
*Attenuations dial settings are positive (+). Attenuations
calibration for a 10 dB attenuator setting represents an error of -0.01 dB.
To compute corrected deviation for each setting, add step attenuator error to amplitude deviation. Cor-
rected deviation should not exceed
Record maximum positive and maximum negative corrected deviation values. Difference between these
two values (maximum cumulative step error) should not exceed 2.4 dB.
PERFORMANCE TESTS
TABLE 4-9. INPUT AllENUATOR ACCURACY
Amplitude
Step
Deviation
1.0 dB between any two adjacent INPUT ATTEN setting.
Step Attenuator
Error
(Calibration)"
For example, 9.99 dB
dial settings are negative (-).
dB Maximum Error per 10-dB Step
dB Maximum Positive Corrected Deviation
dB Maximum Negative Corrected Deviation
dB Maximum Cumulative Step Error
MODEL 8559A
Corrected
Deviation