HP 8559A Operation And Service Manual page 80

PERFORMANCE TESTS
4-22. INPUT ATTENUATOR ACCURACY
SPECIFICATION:
Step Accuracy (0 dB to 60 dB):
Maximum Cumulative Step Error (0 dB to 60 dB):
DESCRIPTION:
The input attenuator accuracy is tested over the range of 0 to 60 dB using an RF substitution method. A step
attenuator that has been calibrated at 30 MHz by a Standards Laboratory is used for substitution. The known
error of the calibrated attenuator is taken into account when computing the input attenuator accuracy.
EQUIPMENT:
Step Attenuator (10 dB/step)
10-dB Attenuztor
Adapter, Type N (m) to BNC (f) (2 required)
PERFORMANCE TESTS
<
1.0 dB per 10-dB step, 0.01 to 18.0 GHz
<
2.4 dB, 0.01 to 18.0 GHz
ADAPTER
STEP
ATTENUATOR
FIGURE 4-17. INPUT ATTENUATOR ACCURACY TEST SETUP
MODEL 8559A
SPECTRUM
ANALYZER
ATTENUATOR
HP 355D, Opt. H82
HP 8491B, Opt. 010
HP 1250-0780