Agilent Technologies 8590 Series Service Manual page 59

Procedure
The accuracy of the amplitude control attenuator is critical to the
proper calibration of the instrument; therefore, this procedure must be
carefully and accurately performed.
1. Turn the analyzer
2. Turn the analyzer
3. Connect the 50 Ω output of the synthesizer/level generator to the
Figure 2-10 Cal Attenuator Error Correction Setup
Use only 75 Ω cables, connectors, or adapters on instruments equipped
CAUTION
with 75 Ω inputs or damage to the input connectors will occur.
4. Set the frequency of the synthesizer/level generator to 25 MHz and
5. To turn the amplitude attenuator correction constants off, press the
Chapter 2
LINE
assembly.
LINE
analyzer INPUT 50 Ω. See
75 Ω input: Connect the 75 Ω output of the synthesizer/level
generator to the analyzer INPUT 75 Ω.
the output to −19 dBm.
following analyzer keys.
PRESET
CAL, More 1 of 4
CORRECT ON OFF
switch to OFF. Remove the instrument cover
switch to ON.
Figure 2-10.
(OFF)
Making Adjustments
6. Cal Attenuator Error
59