HP 8559A User Manual

MODEL 8559A
PERFORMANCE TESTS
PERFORMANCE TESTS
4 - 23. REFERENCE LEVEL ACCURACY (Cont'd)
REFERENCE
LEVEL
Setting
(dBm)
Corrected
Deviation
(dB)
TABLE 4 - 10. IF GAIN ACCURACY IN LOG MODE
*Attenuations > dial settings are positive (+). Attenuations < dial settings are negative ( - ). For example, 9.99 dB
calibration for a 10 dB attenuator setting represents an error of
- 0.01 dB.
Step Accuracy in Linear Mode
Step Attenuator
Error (Calibration)
"
(dB)
(Ref)
Step
Attenuator
Setting
(dB)
o
10
20
30
40
50
60
70
80
90
Set spectrum analyzer Amplitude Scale switch to LIN and REFERENCE LEVEL control to - 10 dBm.
Set step attenuator to 0 dB. Readjust signal generator OUTPUT LEVEL control to position peak of signal
6 divisions above graticule baseline.
Deviation from
6th Division
(dB)
0 (Ref)
Set step attenuator and spectrum analyzer REFERENCE LEVEL control to settings indicated in Table
4
- 1 1. Record deviation of signal peak from 6th division for each setting.
Using Table 4
- 12, convert Deviation from 6th Division in Linear Mode to Deviation in dB for each setting.
Record dB values in Table 4
- 1 1.
To calculate Corrected Deviation, add Step Attenuator Error to Deviation from 6th Division in dB for
each setting. Corrected Deviation should not exceed
+ 0.5 dB from - 10 dBm to - 80 dBm and + 1.0 dB
from
- 10 dBm to - 100 dBm. Record maximum values.

HP 8559A Specifications

General

Brand	HP
Model	8559A
Category	Measuring Instruments
Language	English