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8494/95/96G/H Operating And Service Manual 1
Overview
This manual contains operating instructions for the Agilent 8494G/H,
8495G/H, and 8496G/H attenuators. Included in the manual is information
required to install and test these attenuators.
Specification Instrument specifications are indicated in Specifications, page 6. These
specifications are the performance standards or limits against which the
instruments may be tested.
Instruments Covered by
Manual
The instruments covered by this manual have a two-part serial number. The
first four digits and letter comprise the serial number prefix. The last five
digits form the sequential suffix that is unique to each instrument. The
contents of this manual apply to instruments with serial prefixes 2544A and
above.
An instrument manufactured after the printing of this manual may have a
serial prefix that is not listed above. This unlisted serial prefix indicates that
the instrument is different from those documented in this manual.
Description The 8494G/H, 8495G/H, and 8496G/H are 50-ohm coaxial programmable
step-attenuators. Each attenuator is composed of three or four attenuator
sections connected in cascade. Each section consists of a precision, thin-film
attenuator card, a lossless thru-line, and a ganged pair of solenoid-actuated
slab line transmission lines. The slab lines are flexed by the solenoid
plungers to make contact with either the attenuator card or the thru-line. The
slab line contacts are gold plated leaf springs which ensure long life and
extremely high repeatability.