HP 4440B User manual

HP 44408
DECADE CAPACITOR
et
4440B

CERTIFICATION
The
Hewlett-Packard
Company
certifies
that
this
instrument
was
thoroughly
tested
and
inspected
and
found
to
meet
its
published
specifications
when
it
was
shipped
from
the
factory.
The
Hewlett-
Packard
Company
further
certifies
that
its
calibration
measure-
ments
are
traceable
to
the
U.S.
National
Bureau
of
Standards
to
the
extent
allowed
by
the
Bureaw's
calibration
facility.
WARRANTY AND ASSISTANCE
All Hewlett-Packard products are warranted against defects in
materials and workmanship. This warranty applies for one year
from the date of delivery, or, in the case of certain major compo-
nents listed in the operating manual, for the specified period. We
will repair or replace products which prove to be defective during
the warranty period provided they are returned to Hewlett-
Packard. No other warranty is expressed or implied. We are not
liable for consequential damages.
Service contracts or customer assistance agreements are available
for Hewlett-Packard products that require maintenance and re-
pair on-site.
For any assistance, contact your nearest Hewlett-Packard Sales and
Service Office. Addresses are provided at the back of this manual.
EN

OPERATING
AND
SERVICE
MANUAL
Part No. 04440-90003
MODEL
4440B
|
DECADE
CAPACITOR
SERIALS PREFIXED: 1224) and above
See Section VI for Other Serial Prefixes.
COPYRIGHT
YOKOGAWA-HEWLETT-PACKARD,
LTD.,
1969
9-1,
TAKAKURA-CHO,
HACHIOJI-SHI,
TOKYO.
JAPAN
Printed: MAR. 1980
Ú; HEWLETT
PACKARD

Table of Contents
List of Tables
ii
TABLE OF CONTENTS
Section
Title
Page
I GENERAL
INFORMATION
ie
ca
...u
cece
eh
hh
tnn
1-1 lütroduction Z<, ae poste ла pert kx cu at ra pata халан 3
1-4 Specifications ..
1-6. Instrument Identification às
1-8 Машай Changes. ir замаг san dike ren bot Re Ste as eo
H INSTALLATION
2-1 Tntroduction. үг гээ aussen e
2-3. Unpacking and Inspection.......
2-5 Storage and Shipment ............
2-8 Installatlon. iiss zur кыздык, BES EBS DEE S's 4
IT OPERATION
3-1 Intröduetion. ¿a es mora
3-3. | Controls and Connectors
IV MAINTENANCE. Si 4-1
4-1
Introduction........
4-1
4-3
Test
Equipment
...........
.
4-1
4-5 In-Cabinet Performance Сһеск.......................... 4-1
4-10;
.Adjüslmenb
=
>=:
среза
pass
s
4-2
4-13. Vernier Adjustment : . 4-2
4-14. Fourth Decade Adjustment .........ooooooooomoooo».. 4-2
4
15
Third
Decade
Adjustment
...2;..
sci
cesses
я
Кай
=>:
4-4
4-17. Troubleshooting 2 5... au 4 ae nu anne a eee nn nen в 4-4
V
5-1
a 5-1
5-1
VI
6-1
6-1. OPLIONS ¿yy oe seb Sara ea S gu ek . 6-1
6-3. Special Instruments 2270 . 6-1
6-5 Manual Changes «s «a p 5:4 enia d mir an ea наныя 6-1
VII CIRCUIT DIAGRAMS............--..-- 1
7-1 Introduction... š 1
71-3, General Notes: u... 0 эсээ ada ә ne en he ae 1
LIST OF TABLES
Number Title Page
1-1. Specifications
4-1 Test Equipment Required... sci. wu ete ous ve un eae wee хэн
4-2 Capacitance Check..
4-3. Composition of the lst Decade
4-4, Composition of the 2nd Decade ...
4-5
4-6
= Composition of the 3rd Decade ..........................
- Composition of the 4th Decade ..........................
5-1. List of Reference Designators and Abbreviations.......... 5-1
5-2. Reference Designation Index ............................ 5-2
6-1. Backdating Changes. ows apsu cu. es «из жаа cee язы nur жаз nn 6-1
Model 4440B
4440B-1

Model 4440B List of Illustrations
LIST OF ILLUSTRATIONS
Number Title Page
1-1. | Model 4440B Decade Capacitor....... ба жов жазаса wayk d 1-0
3-1. Front Panel Controls and Connectors .................... 3-1
8-2: Operating Procedüre ¿ss lioe seg Hele 1 at 84 44:34 3-2
4-1 Measüriüe Cable. s ag same гд 228 sur er ал ай рдЕ 4-0
4-2 Testing Plate........... " " .. 4-0
4-3, Performance Test56tup. c... sara oye zn am sam in 4-1
4-4 1615-A Capacitance Bridge Setting ... hx, loui м aee xev 4-2
4-5 Parts БООХНОН «саах uer erg. py Мөр лав $ pas БаРЬИН 30 Ө 4 4-5
7-1. Schematic Diagram Notes, cocos sae жул бу з un ana 2% 2 7-2
7-2. Model 4440B Schematic Diagram ........................ 7-3
4440B-1 iti

Section I
Table 1-1 and Figure 1-1
Table 1-1.
Model 4440B
Specifications
—
Capacitance:
40pF
to
1.
2LF
in
steps
of
100pF
with
a
40pF
to
140pF
variable
air
capacitor
providing
continu-
ous
adjustment
to
better
than
2pF
between
steps.
Dielectric:
Silvered
mica
for
decade
steps.
Direct Reading Accuracy:
+(0.
25%
+3pF)
at
1kHz
for
three-terminal
con-
nection:
capacitance
increase
for
two-terminal
connection
is
less
than
1pF
(nominal
0.
5pF).
Temperature
Coefficient:
-0
to
+70
ppm/*
C
Dissipation Factor:
0.001 max at 1kHz above 1040pF.
*0. 005 max at 1kHz below 1040pF.
* For lowest decade only.
Resonant Frequency:
Typical values of the resonant frequency are:
450kHz at 1uF, 4MHz at 0. 01uF, and 40 MHz
at 100pF.
Insulation Resistance:
5 x 10? ohms minimum, after 5 minutes at
500Vdc.
Maximum Voltage:
500V peak
Operating Temperature:
ОС - 65°C
Weight:
Approximately 5.5 lb. (2. 5kg)
Dimensions:
4440B
DECADE
CAPACITOR
40р!
HEWLETT
+
PACKARD
Loe
ae
Figure 1-1, Model 4440B Decade Capacitor
4440B-2

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

Model 4440B
Section II
Paragraphs 2-1 to 2-11
SECTION И
INSTALLATION
2-1. INTRODUCTION
2-2. This section contains information for unpacking,
inspection, repacking, storage, and installation of the
Model 4440B.
2-3. UNPACKING AND INSPECTION
2-4, If the shipping carton is damaged, ask that the
carrier's agent be present when the instrument is un-
packed. Inspect the instrument for damage(scratches,
dents, broken knobs, etc.). If the instrument isdam-
aged or fails to meet specifications, notify the carrier
and the nearest Hewlett-Packard Field Office (see list
at back of this manual). Retain the shipping carton
and the padding material for the carrier's inspection.
The fieldoffice will arrange fortherepairor replace-
ment of your instrument without waiting for the claim
against the carrier to be settled.
2-5. STORAGE AND SHIPMENT
2-6. PACKAGING, To protect valuable electronic
equipment during storage or shipment always use the
best packaging methods available. Your Hewlett-
Packard field office can provide packing material such
as that used for original factory packaging. Contract
packaging companies in many cities can provide de-
pendable custom packaging on short notice. Here are
a few recommended packaging methods:
a. RUBBERIZED HAIR. Cover painted surfaces
of instrument with protective wrapping paper.
Pack instrument securely in strong corrugated
container (350 10754 in. bursting test) with 2-
4440B-1
inch rubberized hair pads placed along all sur-
faces of the instrument. Insert fillers between
pads and container to ensure a snug fit.
b. EXCELSIOR. Cover painted surfacesof instru-
ment with protective wrapping paper. Pack in-
strument in strong corrugated container (3501b,
Sq in. bursting test) with a layer of excelsior
about 6 inches thick packed firmly against all
surfaces of the instrument.
2-7. ENVIRONMENT. Conditionsduring storage and
Shipment should normally be limited as follows:
a. Maximum altitude, 20, 000 feet.
b. Minimum temparature, -40° F (-40°C).
c. Maximum temparature, 167*F (75°C).
2-8. INSTALLATION
2-9. The Model 4440B is a submodular unit, equip-
ped with rubber feet for bench operation as shipped
from the factory. However, when used in combination
with other submodular units it can be rack mounted.
The HP adapter frame is designed for this purpose
and is available through your Hewlett-Packard Sales:
Service Office.
2-10. ADAPTER FRAME(HP Part No. 5060-0808)
2-11. Theadapter frame is arack frame that accepts
any combination of submodular units. It can be rack
mounted only.

Model 4440B
3-1.
3-2.
Section III
Paragraphs 3-1 to 3-4
SECTION 111
OPERATION
INTRODUCTION
The Model 4440B Decade Capacitor provides
capacitance from 40pF to 1.24F in steps of 100pF.
Between steps a variable air capacitor provides con-
tinuous adjustment to better than 2pF. Capacitance
setting can be directly read out from in-line display.
3-3. CONTROLS AND CONNECTORS
3-4. The front panel controls and connectors are
explained in Figure 3-1.
=
4,
ттр
20 60 so
НЕ
зэнэх
}
Ф Q
HIGH, LOW terminals: Provide capacitance
value set by decade switches and vernier control.
Low terminal is at floating ground potential, and
should be tied to Ground terminal (+) with
grounding strap in a two-terminal connection.
Ground terminal (45): Connected to the cabinet
internally. When grounding strap is discon-
nected from the LOW terminal, the instrument
may be used as a three- terminal connection
capacitor.
Decade switches: Provide capacitance up to
1. 1999u4F between HIGH and LOW terminals in
steps ої 0, 0001 pF (100pF). The value of capac-
itance is displayed in the windows just above
the control knobs ganged with the switches in
in-line form.
lst decade switch: provides capacitance
of 0 to 1. ІШЕ in O. 1yF steps.
2nd decade switch: provides capacitance
of 0 to 0, 09uF in 0. OLF steps.
3rd decade switch: provides capacitance
of 0 to 0, 009uF (9000pF) in 0.001 uF (1000pF)
steps.
4th decade switch: provides capacitance
of Oto 0.0009uF (900p F) in 0, 0001 uF (100pF)
steps.
4. Vernier control: Provides 40pF to 140pF of
continuously adjustable capacitance between the
100pF steps ofthe smallest decade. Resolution
is 2pF and dial scale is linear. Letters in
100pF to 140pF range are in red.
Figure 3-1. Front Panel Controls and Connectors
4440B-1
3-1

Section IIT
Figure 3-2
Model 4440B
But
НЕ [кш] өөн
1. Connect the terminals to desired external cir-
cuit. Being used as a two-terminal connection,
2. Set decade switches and vernier control to de-
sired capacitance value. Capacitance value is
LOWterminal shouldbe tied to Ground terminal
with grounding strap. For three-terminal con-
nection use, grounding strap must be removed
displayed by the sum of the decade switches
and vernier control settings. Refer to the
following Table.
from the LOW terminal.
CAUTION
Do not apply more than 500V (peak maximum) to the terminais.
Damage to the capacitor will occur if higher voltages are applied.
Capacitance Value
Control Settings
Examples
52pF
40pF - 140pF
we Ire Te] [one jor [E e ао
r * 134pF
10. 000DEG | ШЕ
— 0125105) r [124] 2
more than 140pF, uF 2pF/DIV
10pF decade is 0-3
range in red letters
pF/DIV
r
[0-ABCD
more than 140pF,
10pF decade is 4-9
F/DIV
o
0, ABCD
r
П
L
Figure 3-2. Operating Procedure
3-2 4440B-1

Note
After using and/or for storage, set
decade switches to 1.1999 uF position.
This setting keeps all (four) contacts
that contact stess and corrosion is
minimized.
4440B-1
3-3

Section IV
Table 4-1
Model 4440B
Table 4-1. Test Equipment Required
Capacitance Accuracy: 0.01%
Dissipation Factor
Dissipation Factor Accuracy: 107
Instrument
Type
Required
Characteristics
Use
Recommended
Model
Capacitance
*
Measuring
Frequency:
1kHz
зетот
СЕ
Туре
1615-А
Bridge
Range:
10pF
to
1.
1yF
Test
and
Capacitance
Bridge
Resolution:
0.
01pF
Calibration
Resolution: better than 107
Oscillator
**
Frequency
Range
Covering:
1kHz
Performance
GR
Type
1311-A
Maximum
Output:
30V
rms
into
Test
and
Audio
Oscillator
6008
load
Calibration
Detector
***
Frequency
Range
Covering:
¡kHz
Performance
GR
Type
1232-A
Sensitivity:
0.
1
4V
Test
and
Tuned
Amplifier
Gain:
120dB
Calibration
and
Null
Detector
Measuring
Performance
Shown
in
Figure
4-1
Cable
Test
and
Calibration
Testing
Plate
|
Calibration
Shown
in
Figure
4-2
4.-
* жж.
These three instruments work together as a capacitance bridge and are
substituted
by
HP
Model
4270A
Automatic
Capacitance
Bridge.
See
paragraph
4-
16.
BNC (plug!
` Coaxial Cable each length should be
4 to 6 inches
1251-0174
Figure 4-1 Measuring Cable
g g
- — 957 — —— ы
- -- 9.05 -
= m T t HPA
H m
| per
° s 2. Mox
$ d E ж Xo боо?” с26 š
« s Qi š
' ner s ^ 2
gene dis n 4 "5
£
e
23-31
2
= йн “ЭНЭЭ 3:
| 8
| 037014 +
| ie
— = 0.26
a
"ice аттат wen
dimensions т inches
4-0
Figure 4-2 Testing Plate
4440B-

Model 4440B
Section IV
Paragraphs 4-1 to 4-8
SECTION IV
MAINTENANCE
4-1.
INTRODUCTION
e.
As
a
permanent
recordof
the
instrument
main-
4-2, Maintenance of the Model 4440B should be mini- tenance perlörmen,
mal unless an overload voltage or physical damages
require replacement of a part. This section gives
maintenance and service information. Included is a
table of recommended test equipment, repair proce-
dures, an in-cabinet performance check.
4-3. TEST EQUIPMENT
4-4. Table 4-1 lists recommended test equipment for
maintaining and checking performance of the instru-
ment. Test equipment having equivalent characteris-
tics may be substituted for equipment listed.
4-5.
4-6.
proper operation of the instrument and also may
used:
IN-CABINET PERFORMANCE CHECK
The performance check can be used to verify
be
a, As part of an incoming inspection check of in-
strument specifications.
b. Periodically, for instruments used in systems
where maximum reliability is important.
c. As partof a procedure to locate defective com-
ponents.
d. Afterany repairor adjustment, before returning
instrument to regular service,
4-7.
The
performance
test
setup
is
illustrated
in
Figure
4-3.
An
Oscillator
(GR
Type
1311-A),
a
Capacitance
Bridge
(GR
Type1615-A),
and
a
Detector
(GR
Type
1232-A)are
required
forthis
test.
In
addi-
tion,
a
special
measuring
cable
assembly
as
shown
in
Figure
4-1
is
required.
4-8.
To
perform
the
performance
test,
proceed
as
follows:
a.
Make
test
setup
as
illustrated
in
Figure
4-3.
b.
Set
the
1311-A
Audio
Oscillator
controls
as
follows:
FREQUENCY dial. .... 1 kHz
MAXIMUM OUTPUT
switch... 30V, 130mA
OUTPUT LEVEL...... 12 o'clock position
4 F Dial 0
c.
Set
the
1232-A
Tuned
Amplifier
and
Null
Detec-
tor
controls
as
follows:
GAIN dial... „nee ene cine
METER switch .......
FILTER FREQUENCY
switch.... 200Hz - 2kHz
FILTER TUNING dial.. Set around the scale
10 to maximize the
meter deflection.
12 o'clock position
DETECTOR
(GR 1232—A)
OSCILLATOR
(GR I3li-A)
$
9 ©
O)
Й
0000
Hd
©
оо
SPECIAL MEASURING CABLE
GR-BNC ADAPTER 1250-0850
4440B
00000
00000
CAPACITANCE BRIDGE (GR i615—A)
Figure 4-3.
4440B-1
Performance Test Setup

Section TV
Paragraphs 4-9 to 4-14
d. Set the 1615-A Capacitance Bridge controls as
illustrated in Figure 4-4.
e. Connect the 1311-A Audio Oscillator OUTPUT
and the 1615-A Capacitance Bridge GENERATOR
terminals with input cable GR CO 274 - NL.
Connect the 1615-A's DETECTOR connector and
the 1232-A Tuned Amplifier and Null Detector
with cable GR CO 874-R22A.
f, Turn on the power switches of the 1311-A Audio
Oscillator and 1232-A Tuned Amplifier and Null
Detector.
g. Connect the measuring cable to the1615-A UN-
KNOWN terminal with GR- BNC (receptacle)
adapter. HP Part No. 1250-0850 and measure
the residual capacitance of the measuring cable
by manipulating 1615-A capacitance controls.
Let the obtained value x.
x is usually 0. 7pF to 1, ZpF.
4-9. Set the 4440B as shown in Table 4-2, measure
the capacitance between the 4440B terminals. Check
thal the 1615-A capacitance reading is withinthe upper
and lowerlimits shown in Table 4-2 and that the dis-
sipation factor reading is less than . 001.
NOTE
When measuring higher values of the
4440B (greater than 0.1uF), the resis-
tance of the measuring cable increases
the series loss resulting in an incorrect
Dissipation Factor reading of the 1615-A.
In this case, use 3 TERMINAL (binding
post) position of the 1615-A Terminal
Selector and connect the 4440B to these
terminals with three pieces of wire with
resistance as small as possible (thicker
than AWG #20, shorter than 4 inches).
UNKNOWN
UNKNOWN
>
3
TERMINAL H
2 L
TERMINAL
GND
Figure 4-4. 1615-A Capacitance Bridge Setting
4-2
Model 4440B
4-10. ADJUSTMENT
4-11. When the adjustment of the variable capacitor
is necessary, the testing plate (Figure 4-2) should be
installed according to the following steps, and an
adjusting screw driver with long insulator rod should
be used. The Capacitance Bridge reading while ad-
justmeni is being made should be equal tothe reading
alter the adjustment is completed.
a. Remove the top cover by taking out two screws
on the rear.
b. Remove theinside cover plate by takingout two
Screws at the center of the right and left sides
of the plate.
c, Install the testing plate (Figure 4-2) in place of
the inside cover. Fasten it with the two screws
taken out in step b.
4-12. Setthe Capacitance Bridge same as indicated
in paragraph 4-8.
4-13. VERNIER ADJUSTMENT
a. Setallthe dials of four decades to zero, and the
vernier scale to 40pF.
b. Set 1615-A capacitance controls (40 + x)pF, and
adjust C26 to minimize the meter deflection of
the 1232-A "Tuned Amplifier and Null Detector"
using the adjusting driver. Rotate the vernier
dial, and set vernier scale to 140p F. Make the
1615-A Capacitance Bridge balance by manip-
ulating capacitance and dissipation factor -
conductance controls, with D MAX knob set at
0. 01, and read the capacitance and dissipation
factor. The reading should be between (135. 65
+ x)pF and (143.35 + x)pF. Dissipation factor
should be less than . 001.
c. Set vernier scale to 120pF, 100pF, 80pF and
60pF, make the 1615-A Capacitance Bridge
balance at each setting and make sure that the
reading is within the limits listed in Table 4-2.
d. Set vernier scale to 40pF again.
4-14. FOURTH DECADE ADJUSTMENT
a. Without moving vernier scale, set the fourth
decade dial of 4440B to 1 (equivalent to 100p F).
b. Set capacitance control of 1615-A to (140 + x)pF.
Adjust C18and manipulate the dissipation factor
control for the minimum deflectionon the 1232A
meter. Dissipation factor readout should be
less than , 001,
c. Set the fourth decade dial to 2 (equivalent to
200pF), set capacitance control of 1615-A to
(240 + x)pF and balance the1615-A by following
the same steps as indicated in step b. with the
adjustment of C20.
4440B-1

Model 4440B
Table 4-2.
Capacitance
Check
Section IV
Table 4-2
r
1615-A Reading
4270A Reading
4440B Setting
Decade Switch | Vernier Control
Lower Limit Upper Limit
Lower Limit
Upper Limit
Fe
0000
0000
0000
0000
0000
0000
0001
0002
0003
0004
0005
0006
0007
0008
0009
0010
0020
0030
0040
0050
0060
0070
0080
0090
0100
0200
0300
0400
0500
0600
0700
0800
0900
.1000
. 2000
. 3000
. 4000
. 5000
. 6000
. 7000
. 8000
. 9000
1. 0000
1.1000
40 pF
60 pF
80 pF
100 pF
120 pF
140 pF
40 pF
40 pF
40 pF
40 pF
136.
236.
336.
435.
535.
635.
735.
834,
934,
1034,
2032.
3029.
4027.
5024.
6022.
7019.
8017.
9014,
„90+х
„85+х
„80+х
. 15 +х
. 70+ х
65 + х
65 + х
40 + х
15 +x
90 + х
65 + х
40 + х
15 +х
90 + х
65 + х
5-х
0-х
5-х
0-х
54x
0-х
5-х
0-х
5-х
10014 +x
199
299
399
499
598
698
798.
898
99
199
299
399
498
598
698
87 +x
62 + х
37 + х
12 + х
87 + х
62 + х
37 + x
12 +x
787
537
287
037
787
537
287
798037
897787
997
1097
537
287
43.
63.
83.
103,
123.
148,
143.
243.
343.
444,
544.
644.
744,
845.
945.
1045
2048
4053
6058
7060.
9065
100
200
301
401
501
601
702
802.
902
100
200
300
401
501
601
701
802
902
1002
1102
3050.
5055.
8063.
10+x
15+x
20+x
25+x
30+x
35-x
5-х
60-х
85-х
10-х
35+x
60+x
85 +x
10+x
35+x
HE
.0-х
5-х
.0+x
5-х
.0-х
25-х
0-х
.5+х
68 + х
93 + х
18 +х
43 +х
68 + х
93 + х
18 +х
43 +х
68 + х
293
543
793
043
293
543
793
043
293
543
793
36. 95 + x
56. 92 + х
76.89 + х
96. 86 + x
116. 83 + x
136.80 + x
136. 80 + х
236. 65 + х
336. 50 + x
436. 35 + х
536. 20 + х
636. 05 +x
735.90 + x
835. 75 + x
935. 60 + x
1035. 6+ x
2034.1 + х
3032.6 - x
4031.1+x
5029.6-х
6028.1+x
7026. 6 + x
8025.1 + x
9023. 6 + x
10024 + x
20007 + x
29992 + x
39977 + x
49962 + x
59947 + x
69932 + x
79917 + x
89902 + x
99, 89 nF
199. 8 nF
299, 6 nF
399.5 nF
499. 3 nF
599.2 nF
699. 0 nF
798. 9 nF
898.7 nF
998. 6nF
1. 0984 uF
43,05 + х
63.08 + x
83.11 + x
103.14 + x
123.17 + x
143. 20 + x
143, 20 +
243.35 +
343. 50 +
443. 65 +
543. 80 +
643.95 +
744.10 +
844,25 +
944. 65 +
PA Pd bé P4 OM p o» MM
1044.4 +
2045, 9 +
3047.4 +
4048. 9 +
5050, 4 +
6051.9 +
7053. 4 +
8054. 9 +
9056, 4 +
94 Pd Pd ра bi хм M
10058 +
20073 +
30088 +
40103 + x
50118 + x
60133 + x
70148 + x
80163 + x
90178 +x
иим
100.19 nF
200.3 nF
300. 5 nF
400. 6 nF
500. 8 nF
600. 9 nF
701.1 nF
801, 2 nF
901. 4 nF
1.0015 uF
1.1017 pF
4440B-1

Section IV
Paragraphs 4-15 to 4-20
d.
Set
the
fourth
decade
dial
to
3
(equivalent
to
300
pF),
set
capacitance
control
of
1615-A
to
(340
+
x)pF
and
balance
the
1615-A
by
following
the
same
steps
as
indicated
in
step
b.
with
the
adjustment
of
C22.
e.
Set
the
fourth
decade
dial
to
4
(equivalent
to
400
pF),
set
capacitance
control
of
1615-A
to
(440
+
x)pF
and balance
the
1615-A
by
following
the
same
steps
as
indicated
in
step
b.
with
the
adjustment
of
C24.
[.
Set
the
fourth
decade
dial
to
5,
6,
7,
8,
9,
and
balance
the
1615-A
by
manipulating
the
Capaci-
tance
and
Dissipation
Factor
-
Conductance
controls.
Capacitance
readout
should
be
within
the
limits
indicated
in
Table
4-2.
Dissipation
Factor
readout
should
be
less than
.
001.
4-15.
THIRD
DECADE
ADJUSTMENT
a.
Without
moving
vernier
scale,
set
the
third
decade
dial
of
4440B
to
1
(equivalent
to
1000pF)
and
set
the
fourth
decade
to
0.
b.
Set
capacitance
control
of
1615-A
to
(1040
+
x)
pF,
adjust
C10
and
manipulate
the
dissipation
factor
control
for the
minimum
deflectiononthe
1232
-A
meter.
Dissipation
factor
readout
should
be
less
than
.
001.
c.
Set the
third
decade
dial
of
4440B
to
2
(equiva-
lent
to
2000pF),
set
capacitance
controlof
1615
-A
to
(2040
+
x)pF,
and
balance
the
1615-A
as
indicated
in
step
b.
with
the
adjustment
of
C12.
d.
Set
the
third
decade
dial
of
4440B
to
3
(equiva-
lent
to
3000pF),
set
capacitance
control
of
1615
-A
to
(3040
+
x)pF,
and
balance
the
1615-A
as
indicated
in
step
b.
with
the
adjustment
of
C14.
e.
Set
the
third
decade
dial
to
4
(equivalent
to
4000pF),
set
capacitance
control
of
1615-A
to
(4040
+
x)pF
and
balance
the
1615-Aas
indicated
in
step
b.
with
the
adjustment
of
C16.
[.
Set
the
third
decade
dial
to
5,
6,
7,
8, 9,
and
bal-
ance
the
1615-A.
Capacitance
readout
should
be
within
the
limits
indicated
in
Table
4-2.
Dissipation
Factor
readout
should
be
less
than
.
001.
4-16.
This
paragraph
describes
how
to
calibrate
the
capacitance
of
the
4440B
when
it
is
not
necessary
to
confirm
the
dissipation
factor
less
than
.
001.
This
easier
and
simpler
way
of
capacitance
calibration
is
performed
by
HP
Model
4270A.
Automatic
Capaci-
tance
Bridge.
(No
oscillator
and
null
detector
are
necessary)
Dissipation
factor
accuracy
of
4270A
is:
4-4
Model 4440B
1%
of
reading
+
(10
+
Cs/Cx)
counts
so
the
dissipation
factor
of
4440B
can
not
be
confirmed.
Performance
Check
and
Adjustment
can
be
done
ac-
cording
to
paragraphs
4-7
through
4-15
with
Table
4-2
and
the
following
change.
Adjustment
with
C18(4-14,
b),
C20(4-14,
c),
C22(4-14,
d),
С24(4-14,
e),
C10(4-15,
b),
C12
(4-15,
c),
С14(4-15,
d),
С16(4-15,
е),
should
be
changed
as:
(for
example)
4-14,
a.
b.
should
be
as
follows:
Without
moving
vernier
scale,
set
the
fourth
decade
dial
of
4440B
to
1
(equiva-
lent
to
100pF).
Adjust
C18
for
the
4270A
reading
of
(140
-
x)pF.
4-17. TROUBLESHOO TING
4-18.
LOCAL
TROUBLE:
When
wrong
capacitance
or
dissipation
factor
values
are
found
ata
certain
setting
or
at
a
certain
series
of
settings,
check
the
associated
components
shown
in
Table
4-3
through
4-6,
or
the
associated
decade
switch
and
connections
betweenthe
components.
Partslocation
is
illustrated
in
Figure
4-5.
4-19.
TROUBLE
IN
VARIABLE
CAPACITOR:
If
dissipation
factor
is
greater
than
.
001,
at
a
certain
setting,
see
if
there
is
not
any
specks
oí
dirt
between
the
plates
of
the
associated
variable
capacitor.
Some-
times
these
tend
to
increase
the
dissipation
factor
readings.
Blowing
or
wiping
off
these
specks
will
improve
the
reading.
4-20,
OVERALL
TROUBLE:
When
a
wrong
value
of
capacitance
or
dissipation
factor
is
presented
at
all
the
settings,
the
trouble
should
be
allocated
to
one
of
six
portions
of
the
4440B,
terminal
p
ortion,
lstdecade,
2nd
decade,
3rd
decade
4th
decade
and
vernier
portion.
These
six
portions
are
connected
by
a
wire
which
runs
below
the
four
decade
switches
and
is
terminated
at
the
solder
lug
of
the
HIGH
terminal.
The
possible
causes
of
troubles
are:
a.
Terminal
portion:
wrong
insulator
between
HIGH
terminal
and
LOW
terminal
(Common
Floating
Ground),
wrong
binding
post.
b.
Decade
switch
portion:
wrong
insulator
between
the
common
of
the
switch
connected
to
HIGH
terminal
and
Common
Floating
Ground,
dirty
rotor
of
the
switch,
wrong
wiring
configuration,
c.
Vernier
portion:
trouble
in
vernier
capacitor
C25
or
variable
capacitor
C26,
specks
of
dirt
on
these
components.
4440B-1

Model
4440B
Section
IV
Figure
4-5
Table 4-3
and
4-
4
2nd DECADE 4th DECADE HIGH,LOW and GND
SWITCH SWITCH terminals
VERNIER Ist DECADE 3rd DECADE
SWITCH SWITCH
el
Figure 4-5. Parts Location
Table
4-3.
Composition
of
the 1st
Decade
Table
4-4.
Composition
of
the
2nd
Decade
Setting
.0 - 5 -
sl
=
1
O
-
-
.2 Q - 2 - O 5 =
28
С
-
3
- -
Q
=
.4 - O 4 D Е = O
:5
-
-
Q
5
-
СУ
-
e
6 O - © 6 = 5 С ©
л
(9
-
O
7
Q
O
C
8
®
а
8
-
ЖЕК»
-9
i
O e
9
$
e)
Q
O
1.0
©
C
©
IE
zc.
ppt
1.1
O
ү
C
4440B-1 4-5

Section IV
Table 4-5 and 4-6
Model 4440B
Table
4-5.
Composition
of
the
3rd
Decade
Table
4-6.
Composition
of
the
4th
Decade
Compo-
nent)
1000pF
|
2000pF
|
3000pF
|
3000pF
100pF
|
200pF
|
300pF
|
300pF
Dial
C9+C10
|C11«C12
|C13+C14
|
C15+C16
Setting
C17+C18
|C19+C20
|C21+C22
|C23+C24
0
-
-
-
=
0
>
-
2 5
1
Q
=
-
1
Q
-
*
-
2
=
Q
-
-
2
-
OQ
-
-
3
=
=
©
=
3
5 "
©
=
4 O - - O 4 O | - - |o
5 - O - О 5 3 ° 2 2
6
= "
O
O
6
Ё
2
$
О
7
О
5
O O
7
O
-
О
e
8
5
О
O
(9
8
5
O
C
O
9
Q O Q O
9
О
O
=
O
as
y
EZ
L
i
des
Note
After using and/or for storage, set
decade switches to 1.19994F position.
This setting keeps all (four) contacts
of the four decade switches closed so
that contact stress and corrosion is
minimized.
4-6
4440B-2