Agilent Technologies 4395A, Service Manual

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VERIFY OPERA TIONS
The measuremen t problem can b e caused b y improp er op eration. Conrm that all op erations,
connections and con trol settings, etc., are prop erly made during the measuremen t. F or
detailed information ab out prop er op erations, see the follo wing man uals:
Op er ation Manual (p/n 04395-90000)
Pr o gr amming Manual (p/n 04395-90000)
Some examples of the t ypical op eration errors are sho wn in the follo wing paragraph.
Using 75 Connectors with 50 Connectors
Do not use 50 connectors with 75 connectors; their cen ter conductors are dieren t
diameters. Using a 50 male connector with a 75 female connector will destroy the female
connector.
Large Spurious Signals in the Spectrum Measurement
Large spurious signals around the fundamen tal signal can b e caused b y an input signal lev el
that is higher than the reference lev el. Reducing the input signal lev el or setting the reference
lev el higher can solve the spurious signal problem.
Odd Appearing Opens and Shorts in the Netw ork Measurement
Op ens and shorts can app ear as short lines (rather than the exp ected p oints) on a Smith
Chart. This is a result of some shorts and op ens b eing oset. See the calibration kit man ual
to determine the oset. T o v erify the op ens and shorts, see V erify Shorts and Op ens in the
Insp e ct the Calibr ation Kit pro cedure later in this c hapter.
9-2 Accessories Troubleshooting