Agilent Technologies 8590L - Page 182

Chapter 2a 183
Making Adjustments: If 3335A Source Not Available
6a. Cal Attenuator Error
4 dB Step Check
20.To measure the 4 dB step correction, press the following analyzer
keys.
AMPLITUDE, 17, −dBm
21.Set the 1 dB step attenuator to 8 dB.
22.Press the following analyzer keys.
PEAK SEARCH, MARKER DELTA
MKR FCTN, MK TRACK ON OFF (ON)
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
AMPLITUDE, 13, −dBm.
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 Table
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 Table 2a-2.
8 dB Step Check
28.To measure the 8 dB step correction, press the following analyzer
keys.
AMPLITUDE, 18, −dBm
29.Set the 1 dB step attenuator to 9 dB.
30.Press the following analyzer keys.
PEAK SEARCH, MARKER DELTA
MKR FCTN, MK TRACK ON OFF (ON)
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
AMPLITUDE, 10, −dBm.
33.Set the 1 dB step attenuator to 1dB.