,, 
___ 
_ 
OPERATING 
AND 
SERVICE 
MANUAL 
MODEL  3580A 
SPECTRUM 
ANALYZER 
Serial Number:  1415A-00741 (see note below) 
IMPORTANT 
NOTICE 
If 
the 
Serial 
Number 
of 
your 
instrument 
is 
lower 
than 
the 
one 
on 
this 
title 
page, 
the 
manual 
contains 
revisions 
that 
do 
not 
apply 
to 
your 
instrument. 
Backdating 
information 
given  in 
the 
manual 
adapts 
it 
to 
these 
earlier 
instruments. 
Where 
practical, 
backdating 
changes  are  given 
on 
the 
schematic 
diagrams. 
These  changes  are 
indicated 
by 
a  dagger  sign 
(t) 
which 
refers 
to 
the 
corresponding 
backdating 
note 
on 
the 
schematic 
or 
apron 
page. 
Backdating 
changes 
not 
given 
on 
the 
schematics are  flagged 
by 
a 
numbered 
delta 
(A
1
) 
which 
r.efers 
to 
the 
corresponding 
numbered 
change 
in 
the 
Backdating 
Section 
(Section 
VI 
11 
). 
WARNING 
I 
To 
help 
minimize 
the 
possibility 
of 
electrical 
fire 
or 
shock 
hazards, 
do 
not 
expose 
this 
instrument 
to 
rain 
or 
excess 
moisture. 
Manual Part No. 03580-90002 
Microfiche No. 03580-90092 
Copyright Hewlett-Packard Company  1973 
P.O. Box 301, Loveland, Colorado, 80537 U.S.A. 
Printed:  November 1976