HP 8559A Operation And Service Manual page 119

MODEL 8559A
5-19. LOG AMPLIFIER LOG AND LINEAR ADJUSTMENTS
REFERENCE:
A14 and A1 5 Schematics
DESCRIPTION:
Step attenuators are used to change the level of the input signal to the spectrum analyzer in calibrated steps. The
output of Vertical Driver and Blanking Assembly A15 is monitored, and adjustments are performed to calibrate
Log Amplifier Assembly A14.
D l SPLAY
EXTENDER
CABLE
FIGURE 53. LOG AMPLIFIER LOG AND LINEAR ADJUSTMENTSTEST SETUP
EQUIPMENT:
Signal Generator
Digital Voltmeter
Step Attenuator (10-dB/step)
Step Attenuator (1-dB/step)
Cable Assembly, Banana Plug to BNC (m)
Adapter, Type N (m) to BNC
Adapter, SMC (m) to BNC
Extender Cable Assembly
ADJUSTMENTS
CABLE
A SS EM B L Y
ADAPTER
ADAPTER
I
ANALYZER
(f)
(f)
RF OUTPUT
ADAPTER
STEP
ATTENUATORS
HP 355D, Opt. H82
H P 355C, Opt. H80
ADJUSTMENTS
H P 8640B
HP 3456A
HP 1-1001A
HP 1250-0780
HP 1250-0832
HP 5060-0303