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Model 4440B
Section I
Paragraphs 1-1 to 1-9
SECTION
I
GENERAL
INFORMATION
1-1.
INTRODUCTION
1-2.
The
HP
4440B
Decade
Capacitor
is a high-
accuracy
instrument
providing
usable
capacitances
from 40pF to 1.25F.
150. 25% accuracy makes it an
ideal aid in circuit design,
ac bridge measurements,
and any application where accuracy is critical,
such
as a working
standard.
The
4440B
is also ideally
suited for production line testing.
1-3.
The4440B offers simplicity of operation combin-
ing four easy-to-read decade ranges in a lightweight,
compact
package designed for operator
convenience
and speed.
The use of silvered-mica
capacitors
in
all decade steps providesfor high accuracy, low dis-
sipation factor, and good temperature coefficient.
An
air capacitor
vernier
provides
100pF
of
additional
capacitance
with
2pF resolution
between
the
100pF
steps of the smallest
decade.
The
capacitors
are
housed
in a double
shield,
such
that the
increased
capacitance
from
three-terminal
connection to two-
terminal connection is held to ipF.
1-4.
SPECIFICATIONS
1-5.
A complete
list of specifications
is found
in
Table 1-1.
4440B-1
1-6.
INSTRUMENT
IDENTIFICATION
1-7.
Hewlett-Packard uses a two- section eight-digit
Serial numberto identify instrument.
The first three
digits (preceding the dash) are the serial prefix which
identifies a series of instruments; the last five digits
identify
a particular
instrument in the series.
The
serial
number
appears on a plate located on the rear
panel.
All correspondence
with
Hewlett
- Packard
Sales/Service
Offices
with regard to an instrument
Should reference the complete serial number.
1-8.
MANUAL
CHANGES
1-9.
This manual provides operating and service in-
formation for the HP Model 4440B Decade Capacitor.
Information in this manual applies directly to instru-
ments(as manufactured) with serial numbers prefixed
by the three digits indicated on the title page.
If the
Serial prefix of the instrument is different
from
that
on the title page,
a "Manual
Changes" sheet
supplied
wil describe changes which will adapt this manual to
provide
correct
coverage.
Technical
correction (if
any) to this manual, due to known errors in print, are
called Errata and are shown on thechange sheet.
For
information on manual coverage of any HP instrument,
contact the nearest HP Sales/Service Office(addresses
are listed at the back of this manual).
1-1
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