Agilent Technologies 8590 Series Service Manual page 183

4 dB Step Check
20.To measure the 4 dB step correction, press the following analyzer
keys.
−dBm
, 17,
AMPLITUDE
21.Set the 1 dB step attenuator to 8 dB.
22.Press the following analyzer keys.
,
PEAK SEARCH
,
MKR FCTN MK TRACK ON OFF
23.The MKR ∆ amplitude reading should be 0.0 dB ±0.01dB. If it is not,
repeat step 5.
24.Set the analyzer's reference level by pressing
25.Set the 1 dB step attenuator to 4 dB.
26.The 4 dB attenuator step error is the MKR ∆ reading minus the
error in the 1 dB step attenuator when set to 8 dB and 4 dB in
2a-1.
4 dB attenuator step error =
Analyzer MKR ∆ - (8dB attenuator error - 4 dB
attenuator error)
27.Enter the 4 dB attenuator step error in
8 dB Step Check
28.To measure the 8 dB step correction, press the following analyzer
keys.
, 18,
AMPLITUDE
29.Set the 1 dB step attenuator to 9 dB.
30.Press the following analyzer keys.
,
PEAK SEARCH
,
MKR FCTN MK TRACK ON OFF
31.The MKR ∆ amplitude reading should be 0.0 dB ±0.01dB. If it is not,
repeat step 5.
32.Set the analyzer's reference level by pressing
33.Set the 1 dB step attenuator to 1dB.
Chapter 2a
Making Adjustments: If 3335A Source Not Available
MARKER DELTA
(ON)
−dBm
MARKER DELTA
(ON)
6a. Cal Attenuator Error
, 13,
AMPLITUDE
Table 2a-2.
, 10,
AMPLITUDE
−dBm
.
Table
−dBm
.
183