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Page Title: Figure 14. Coaxial relays and attenuators, simplified schematic diagram.
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Figure 14. Coaxial relays and attenuators, s i m p l i f i e d s c h e m a t i c d i a g r a m .
and adapter CP703 to the input of
SHUNT CAL position are the following:
20-db fixed attenuator AT701. The
(1) Rf signal path. The rf signal con-
c a l i b r a t i n g signal is attenuated by
netted to SIGNAL INPUT jack J705
20 db and is coupled through adapter
i s conducted through right-angle
CP702 to mating jack J708 on relay
adapter CP701 to jack J707 on
K701.
coaxial relay K701. The coil of re-
(a) T h e movable arm on the upper
lay K701 is deenergized when cal-
set of contacts of K701 (now de-
ibration switch S706 is set to
energized) couples the attenuated
S H U N T CAL position. Therefore,
i m p u 1 s e generator calibrating
the movable arm on the lower set
v o l t a g e from jack J708 through
of contacts provides a short circuit
jack J709 and cable assembly
to chassis ground for the incoming
W701 to signal attenuator AT702.
r f signal.
T h e signal path from AT702 is
(2) Impulse generator signal path. T h e
i d e n t i c a l with that described in
o u t p u t of impulse generator G701
p a r a g r a p h a(1) above.
i s applied through plug P709 and
(b) Figure 14 shows that the movable
mating jack J713 on coaxial relay
arm on the lower set of contacts
K702. Since the coil of relay K702
o f relay K702 (now energized)
i s energized in the SHUNT CAL
a p p l i e s chassis ground potential
position of S706, the movable arm
t h r o u g h adapter CP704 to IM-
on the upper set of contacts creates
PULSE OUTPUT jack J717. This
a path of continuity for the impulse
circuit condition insures that the
generator signal through jack J714
34


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