Cal Attenuator Error - Agilent Technologies 8590 Series Service Manual

Making Adjustments

6. Cal Attenuator Error

6. Cal Attenuator Error
This adjustment applies to:
All 8590 E-Series and L-Series spectrum analyzers
8591C cable TV analyzers
8594Q QAM analyzers
The A12 amplitude control assembly has one 10 dB and two 20 dB
nonadjustable amplifiers. It also has 1 dB, 2 dB, 4 dB, 8 dB, and 16 dB
attenuators which are correctable. The 16 dB step is not used at this
time.
The attenuator error correction procedure involves disabling the
attenuator correction constants, determining the attenuator step
errors, and entering the new correction constants into the analyzer
memory.
Equipment Required
Synthesizer/level generator
Cable, BNC, 120 cm (48 in)
Adapter, Type N (m) to BNC (f)
Additional Equipment for Option 026
Adapter, Type BNC (f) to SMA (m)
Additional Equipment for 75 Ω Input
Cable, BNC, 75 Ω, 120 cm (48 in)
58 Chapter 2