10 Agilent 8494/95/96G/H Attenuators Operating and Service Manual
1 Introduction
Product Overview
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.
Figure 1 Typical Four-Section Attenuator Schematic Diagram
From
solenoid
driver
circuits
Thru line
Attenuator card
+24 VDC
RF input
RF
output
Note:
Solenoid (K4) and
associated
circuitry are not
available in
models 8495G
and 8495H.
Thru line
Attenuator card
Thru line
Attenuator card
Thru line
Attenuator card
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