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Section I
most
of the 3490A logic
IC's for
use
with the
-hp
lO529A
Logic
Comparator. Using these
boards with
the
Logic
Comparator,
a
faulty
IC can
be isolated
in seconds
without
removing it from the circuit.
A spare
parts
set,
-hp-
11127A, is
available for
the 3490A.
This
set
contains
the most
critical components
of
the 3490A
such
as
integrated circuits,
transistors
and
reed relays.
Three
interface
cables are available
for the
GPIB Option
030. These
cables
are
identical
except
for length.
l063lA Interface
cable,3 ft.
10631B Interface
cable,6
ft.
10631C
Interface
cable,
12 ft.
A
GPIB Repair
Kit,
-hp-
Part No.
0349G80009,
is
available
for troubleshooting
the
General
Purpose
lnter-
face
Bus I/O circuits.
Also
available is
a cable. Product
No.
562A-16C,
for use with
Option
021 and *rp
50508
or
50554, Printers. Field
installable
Options
O2l and,O22
for
units
with Option
O2O are
available by
accessory
numbers
Ill2lA and I I l22A
respectively.
Model
3490A
1.14.
INSTBUMENT AND
MANUAL
IDENTIFICA-
TION.
l-1
5.
Instrument
identification
by serial number
is
located on
the
rear panel.
Hewlett-Packard
uses
a
two-section
serial number consisting
of a four-digit
prefix
and a
five-digit suffix
separated
by a
letter
designating the
country in
which
the instrument
was
manufactured.
(A
=
U.S.A.;
G
=
West
Germany;
J
=
Japan;U
=
United Kingdom.)
l-16. This
manual
applies to instruments
with the
serial
numbers
indicated
on the title page.
If
changes
have
been made in the instrument
since this
manual
was
printed,
a
"Manual
Changes" supplement
supplied
with
the
manual
will define these
changes. Be sure
to
record
these changes
in
your
manual. Backdating information
in
Section
VIII
adapts
the
manual to instruments
with
serial
numbers lower
than
that shown on the
title
page.
Part
numbers
for the manual
and
the
microfiche
copy
of
the manual are
also
shown
on the
title
page.
l-