User's Manual

Service
Manual
494A
& 494AP
Tektronix
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Spectrum
Analyzers
Volume
1
070-ss60-00
Warning
The
servicing
instructions
are for
use
by
qualified
personnel
only.
To
avoid personal
injury,
do
not
perform
any
servicing
unless
you
are
qualified
to
do
so. Refer
to
the Safety
Summary
prior
to
performing
service.
Please
check
for
change
information
at the rear
of this
manual.
First
Edition:
January
1
987