HP 4262A Service manual

OPERATING AND SERVICE MANUAL
SERIAL NUMBERS
This manual applies directly to instruments with
serial numbers prefixed 2514J
With changes described in Section VS, this
manual also applies to instruments with serial
numbers prefixed 171QJ, 1739J, and 2022 J
For additional important information about serial
numbers, see INSTRUMENTS COVERED BY MAN¬
UAL in Section L
©COPYRIGHT: YOKOGAWA-HEWLETT-PACKARD, LTD., 1977
9-1. TAKAKURA-CHO, HACHIOJI-SHI, TOKYO, JAPAN
Manual Part No. 04262-90007
Microfiche Part No. 04262-90057
Printed : JUN.

The following general safety precautions must be observed during all phases of op¬
eration, service, and repair of this instrument. Failure to comply with these pre¬
cautions or with^ specific warnings given elsewhere in this manual violates safety
standards of design, manufacture, and intended use of the instrument. Hewlett-
Packard Company assumes no liability for the customer's failure to comply with
these requirements.
GROUND THE INSTRUMENT
To minimize shock hazard, the instrument chassis and cabinet must be connected to
an electrical ground. The instrument is equipped with a three-conductor ac power
cable. The power cable must either be plugged into an approved three-contact
electrical outlet or used with a three-contact to two-contact adapter with the
grounding wire (green) firmly connected to an electrical ground (safety ground) at
the power outlet. The power jack and the mating plug of the power cable meet
International Electrotechnical Commission (IEC) safety standards.
DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE
Do not operate the instrument in the presence of flammable gases or fumes. Op¬
eration of any electrical instrument in such an environment constitutes a definite
safety hazard.
KEEP AWAY FROM LIVE CIRCUITS
Operating personnel must not remove instrument covers. Component replacement
and internal adjustments must be made by qualified maintenance personnel. Do not
replace components with power cable connected. Under certain conditions, dan¬
gerous voltages may exist even with the power cable removed. To avoid injuries,
always disconnect power and discharge circuits before touching them.
DO NOT SERVICE OR ADJUST ALONE
Do not attempt internal service or adjustment unless another person, capable of
rendering first aid and resuscitation, is present.
Because of the danger of introducing additional hazards, do not install substitute
parts or perform any unauthorized modification to the instrument. Return the in¬
strument to a Hewlett-Packard Sales and Service Office for service and repair to
ensure that safety features are maintained.
DANGEROUS PROCEDURE WARNINGS
Warnings, such as the example below, precede potentially dangerous procedures
throughout this manual. Instructions contained in the warnings must be followed.
WARNING
Dangerous voltages, capable of causing death, are present in this instru¬
ment, Use extreme caution when handling, testing, and adjusting.

Herstellerbescheinigung
Hiermit wird bescheinigt, dafi das Gerat HP 4262A digital LCR meter in Ubereinstimmung
mit den Bestimmungen von Postverfiigung 1046/84 funkentstort ist.
Der Deutschen Bundespost wurde das Inverkehrbringen dieses Cerates angezeigt und die
Berechtigung zur Uberpriifung der Serie auf Einhaltung der Bestimmungen eingeraumt.
Anm: Werden Mefi- und Testgerate mit ungeschirmten Kabeln und/oder in offenen
Mefiaufbauten verwendet, so ist vom Betreiber sicherzustellen, dafi die Funk-
Entstorbestimmungen unter Betriebsbedingungen an seiner Grundstiicksgrenze eingehalten
werden.
GERAUSCHEMISSION
Lpa < 70 dB
am Arbeitsplatz
normaler Betrieb
nach DIN 45635 T. 19
Manufacturer’s Declaration
This is to certify that this product, the HP 4262A digital LCR meter, meets the radio
frequency interference requirements of directive 1046/84. The German Bundespost has b&f
notified that this equipment was put into circulation and was granted the right to checj^. fch^>
product type for compliance with these requirements. r
Note: If test and measurement equipment is operated with unshielded cables and/or used fot^
measurements on open set-ups, the user must insure that under these operating conditions,
the radio frequency interference limits are met at the border of his premises. ,.Ja
ACOUSTIC NOISE EMISSION
Lpa < 70 dB
operator position
normal operation
per ISO 7779

OPERATING AND SERVICE MANUAL
MODEL 4262A
LCR METER
(including Options 001,004, 010, and 101)
SERIAL NUMBERS
This manual applies directly to instruments with
serial numbers prefixed 2514J
With changes described in Section VH, this
manual also applies to instruments with serial
numbers prefixed 1710J, 1739J, and 2022J
For additional important information about serial
numbers, see INSTRUMENTS COVERED BY MAN¬
UAL in Section I.
©COPYRIGHT: YOKOGAWA-HEWLETT-PACKARD, LTD., 1977
9-1, TAKAKURA-CHO, HACHIOJI-SHI, TOKYO, JAPAN
Manual Part No. 04262-90007
Microfiche Part No. 04262-90057
Printed : JUN. 1987

Table of Contents
Model 4262A
TABLE OF CONTENTS
Section Title Page
I GENERAL INFORMATION... 1-1
1-1. Introduction... 1-1
1-4. Description. 1-1
1-8. Specifications. 1-7
1-10. Safety Considerations. 1-7
1-13. Instruments Covered by Manual 1-7
1-18. Options. 1-8
1-20. Option 001. 1-8
1-22, Option 004 . 1-8
1-24. Option 101.... 1-8
1-26. Option 010. 1-8
1-28. Other Options. 1-8
1-31. Accessories Supplied... 1-8
1- 33. Equipment Available ... 1-8
n INSTALLATION... 2-1
2- 1. Introduction . 2-1
2-3. Initial Inspection.. 2-1
2-5. Preparation for Use .. 2-1
2-6. Power Requirements .......... 2-1
2-8. Line Voltage and Fuse Selection 2-1
2-10. Power Cable ... 2-1
2-14. Interconnections.............. 2-3
2-16. Operating'Environment........ 2-3
2-19. Installation Instructions ....... 2-3
2-21. Installation of Options
907, 908 and 909 ...... 2-3
2-23. Storage and Shipment ............. 2-3
2-24. Environment... 2-3
2-26. Packaging .. 2-3
2-29. Option Installation ................ 2-6
2-31. Option 001 BCD Data Output
Installation.. 2-6
2-32. Option 004 Comparator
Installation... 2-6
2-33. Coupling Option 004 Comparator
with Option 001 BCD Data
Output Installation. 2-6
2-34. Option 101 HP-IB Remote Control
and Data Output Installation... 2-6
HI OPERATION........ 3-1
3-1. Introduction... 3-1
3-3. Panel Features ... 3-1
3-5. Self Test (Basic Operating Check) .. 3-1
3-7. Test Signals. 3-6
3-9. Measurement Range ... 3-6
3-11. Initial Display Test ... 3-7
3-13. Initial Control Settings... 3-7
3-15. D/Q Measurement. 3-7
3-17. LCR Measurement.. 3-7
3-19. D/Q Blanking Function (Switch
selectable function inside cabinet). 3-9
3-21. General Component Measurement .. 3-9
3-23. Semiconductor Device Measurement 3-9
3~25. External DC Bias ................. 3-9
3-28. External Triggering .............. 3-9
Section Title Page
3-30. Terminal Configuration.3-10
3-32. Offset Adjustment .3-10
3-40. Option Operation . 3-27
3-42. Option 001: BCD Parallel Data
Output .. 3-27
3-44. Output Data and Pin
Assignment. 3-27
3-46. Alternate Output of LCR and
D/Q Data. 3-27
3-47. Output Timing... 3-27
3-49. Option 004-COMPARATOR . 3-30
3-51. Front Panel Features
(Figure 3-42) .. 3-30
3-52. LIMIT Setting Warning.. 3-31
3-53. OUTPUT Connector Decision
Output . 3-31
3-60. Option 101: HP-EB... 3-32
3-62. Connection to HP-IB Controller 3-32
3-63. HP-IB Status Indicator.. 3-32
3-64. LOCAL Switch... 3 -32
3-65. HP-IB Interface Capabilities . „ 3-32
3-66. Source and Acceptor
Handshake: SHI, AH1. „ 3-32
3-67. Talker Capability: T5 ... 3-32
3-68. Functions Related to
Talker Capability ..... 3-33
3-69. Listener Capability: L4 . 3-33
3-70, Service Request
Capability: SRI ....... 3-33
3-71. Remote/Local
Capability: RLl....... 3-36
3-72. Device Clear
Capability: DC1....... 3-36
3-73. Device Trigger
Capability: DTI.. 3-36
3-74. ADDRESS Switch. 3-36
3- 75. Remote Message Coding. 3-36
IV PERFORMANCE TEST .................. 4-1
4- 1. Introduction... 4-1
4-3. Equipment Required. 4-1
4-5. Test Record ........ . . . . . 4-1
4-7. Calibration Cycle. 4-1
•- Preliminary Operations .. 4-2
-—- Calibration of DUT's ..4-4
4-9. Measurement Frequency Test...... 4-7
4-10. Capacitance Accuracy Test... 4-8
4-11. Resistance/ESR Accuracy Test.... 4-12
4-12. Dissipation Factor Confirmation Check . 4-14
4-13. Inductance Accuracy Test. 4-17
4-14. Internal DC Bias Source Test. 4-19
4-15. Offset Adjustment Test... 4-20
4-16, Comparator Test (Option 004 Only) 4-22
4-17. HP-IB Interface Test
(Option 101 Only)............... 4-25

List of Tables
list of Illustrations
Model 4262A
LIST OF TABLES
Number
Title
Page Number
Title
Page
1-1. Specifications ...
. 1-2
5-1.
Adjustable Components...........
. 5-2
1-2.
General Information...
. 1-6 5-2.
Factory Selected Components.
. 5-3
1-3.
Equipment Available.
. 1-9
5-3.
DUT's Recommended for
1-4.
Recommended Test Equipment .... 1-10
Making Adjustments ...
. 5-4
5-4.
Adjustment Requirements.»„.
. 5-5
2-1.
Option Components .............. . 2-8
6-1.
List of Reference Designators
and Abbreviations.
. 6-1
3-1.
Test Signal Level..
3-6
6-2.
Manufacturers Code List .........
. 6-2
3-2.
Measurement Ranges..
3-6
6-3.
Replaceable Parts......
. 6-3
3-3.
Annunciation Display Meanings....
3-12
6-4.
Option 010 Modification ..
. 6-24
3-4.
Unusual Operating Indications .....
3-21
7-1.
Manual Changes by Serial Number .
. 7-1
3-60.
Remote Program Codes..
3-32
7-2.
Summary of Changes by Assembly.
. 7-1
3-61.
Remote Message Coding...
3-33
8-1.
Currently Available Options ...... 8-14
4-1.
Recommended Components for
8-2.
Symptoms Likely to Mislead..
8-18
Accuracy Checks ............
4-6
8-3.
Front Panel Symptoms of Internal
Control Misadjustment..
8-19
8-4.
Front Panel Isolation Procedure ..
8-20
LIST OF ILLUSTRATIONS
Number
Title
Page
Number
Title
Page
1-1.
Model 4262A and Accessories ..... . 1-1
4-4.
Dissipation Factor Confirmation Check
1-2.
Serial Number Plate .............
. 1-7
Setups .......
,4-14
4-5.
Inductance Accuracy Test Setup ...
4-17
2-1.
Voltage and Fuse Selection........
. 2-2
4-6.
Internal DC Bias Source
2-2.
Power Cable..
. 2-4
Test Setup..
4-19
2-3.
Rack Mount Kit..
. 2-5 4-7.
Offset Adjustment Test Setup......
4-20
2-4.
Option Installation Illustrations....
. 2-7 4-8.
Comparator Test Setups..........
4-22
4-9.
Comparator Output (J6) data format
4-24
3-1.
Front Panel Features ............
. 3-2
4-10.
HP-IB Interface Test Setup ...
4-25
3-2.
Rear Panel Features .............
. 3-4 4-11.
SRQ Service Routing .............
4-29
3-3.
Test Fixture and Leads....____ . 3-8
3-4.
Measurement Error due to 5-1.
Power Supply Voltage Adjustment...
, 5-6
Misadjusted ZERO ADJ controls .
.3-10 5-2.
Nanoprocessor Operating Power
3-5.
Conversion between Parallel and
Voltage Adjustment Location .....
, 5-7
Series Equivalents.. .3-12
5-3.
A12 Board Offset Adjustment.
, 5-8
3-6.
Relationship of Dissipation to 5-4.
Waveform at A.12Q11 Source .......
, 5-9
Series and Parallel Resistance...
.3-13
5-5.
A13 Board Offset Adjustment.......
, 5-9
3-7. General Component Measurements. .3-15
5-6.
Waveform at A13TP1 ............ 5-10
3-8. Semiconductor Device Measurement 3-18
5-7.
Waveform at A13TP2 ............
5-11
3-9.
External DC Bias Circuits...
.3-20
5-8.
Waveform at A13TP3 ..
5-12
3-40.
Pin Assignments of Output
5-9.
A14 Phase Detector & Integrator
Connector and Output Format.... .3-28
Adjustment..
5-13
3-41. Timing Chart of BCD Data Output.. .3-29
5-10.
A 22SI Switch Setting ..
5-14
3-42.
Front Panel Features ............
.3-30
5-11.
Zero Detector & APAO Adjustments
5-15
3-43.
Option 004: COMPARATOR_... .3-30 5-12.
10kHz Measurement Accuracy
3-44. Pin Location of Comparator
Adjustment ....................
5-17
Data Output....................
.3-31
5-13.
Offset Adjustment Setup ..........
5-22
4-1.
Measurement Frequency Test Setup
. 4-7
6-1.
Major Mechanical Parts
4-2.
Capacitance Accuracy Test Setup.. . 4-8
- Exploded View ............... 6-23
4-3. Resistance Accuracy Test Setup... .4-12
6-2.
Mechanical Parts
- Exploded View ............... 6-25
iv

Model 4262A
Section I
Paragraphs 1-1 to 1-6
SICTION I
GENERAL INFORMATION
1-1. INTRODUCTION.
1-2. This operating and service manual contains
the information required to install, operate, test,
adjust and service the Hewlett-Packard Model
4262A Digital LCR Meter. Figure 1-1 shows the in¬
strument and supplied accessories. This section
covers specifications, instrument identification,
description, options, accessories, and other basic
information.
1-3. Listed on the title page of this manual is a
microfiche part number. This number can be used
to order 4x6 inch microfilm transparencies of the
manual. Each microfiche contains up to 60 photo¬
duplicates of the manual pages. The microfiche
package also includes the latest manual changes
supplement as well as all pertinent service notes.
To order an additional manual, use the part num¬
ber listed on the title page of this manual.
1-4. DESCRIPTION.
1-5. The HP Model 4262A LCR Meter is a general
purpose, fully automatic test instrument designed
to measure the parameters of an impedance ele¬
ment with high accuracy and speed. The 4262A
measures capacitance, inductance, resistance (equi¬
valent series resistance) and dissipation factor or
quality factor over a wide range at test frequencies
of 120Hz, 1kHz and 10kHz employing a five-term¬
inal connection configuration between the com¬
ponent and the instrument. The measuring circuit
for the device to be measured is capable of both
parallel and series equivalent circuit measurements
and the measured values are displayed by the two
three-full digits LED displays on the front panel.
A convenient diagnostic function, also featured in
the 4262A, is actuated by a SELF TEST switch.
This confirms functional operation of the instrument.
1-6. The measuring range for capacitance is from
O.OlpF to 19.99mF, inductance from O.OImH to
1999H, and resistance from lm£2 to 19.99MJ2,
which are measured with a basic accuracy of 0.2
to 0.3% depending on test signal level, frequency,
and measuring equivalent circuit, and at typical
measuring speeds of 220 to 260 milliseconds at
Figure 1-1. Model 4262A and Accessories.

Section I Model 4262A
Table 1-1
Table 1-1. Specifications (Sheet 1 of 4).
COMMON SPECIFICATIONS
Parameters Measured: C - D or Q (1/D) Deviation Measurement: When ^LCR key is de-
L - D or Q (1/D)
pressed, the existing measured value
R (ESR) (Loss measure-
is stored as a reference value and
ment can be negated by
displayed value is offset to zero'. The
switch on internal board).
range is held and deviation is dis¬
played as the difference between the
Display: 3-1/2 Digit, Maximum Display 1999
referenced value and subsequent re-
(When D value is more than 10, max-
suit. (Deviation spread in counts
mum display is 199).
from -999 to 1999).
Measurement Circuit Modes:
Offset Adjustment: Stray capacitance and re-
Auto, Parallel, and Series
sidual inductance of test jig can be
compensated for as follows:
Measurement Terminals: 5-terminal configura-
tion (high and low terminals for both
C: up to lOpF
potential and current leads plus guard). L: up to ljuH
Range Modes: LCR - Auto and Manual
Self Test: Annunciates either Pass, or Fail for
(up-down)
performance in each of the five basic
DQ - Auto and Manual (step)
ranges.
DC Bias:
Measurement Frequencies: 120(100)Hz, 1kHz
Internal: 1.5V, 2.2V, 6V (Selectable at front
panel). Accuracy ±5%
External: External DC bias connector on rear
panel. Maximum +40V,
and 10kHz ±3%.
Test Signal Level: Normal level: iVrms.
Low level : 50m Vrms (parallel
Trieeer: Internal. External, or Manual
capacitance mode only)
Warm-up Time: 15 minutes
GENERAL
Operating Temperature & Humidity: Power Consumption: 55VA with any option
0 # C to 55°C at 95% RH(to40°C)
Dimensions: 426(W) x 147(H) x 345(D)mm
Power Requirements: 100/120/220V ±10%, (16-3/4” x 5-3/4” x 13-3/4”)
240V +5% -10% 48 - 66Hz
Weight: Approximately 8kg (Std)

Model 4262A
Table 1-1. Specifications (Sheet 2 of 4).
C-D, C-Q MEASUREMENT
Ranges
120Hz
C 1kHz
10kHz
D
Qn
Test Signal
Level *2
db-
HPM-
AUTO
C Accuracy *3
AUTO
D(l/Q)
Accuracy *3
-O-
AUTO
[iViiW i i (iiiVinl b iiiiiinJ * uVi!3a
IO.OOmF 100.0/jF
lOOOnF IO.OOmF
lOO.OnF lOOOnF
.001' ■ '-'19.9 (2 Ranges)
0.05^1000 (4 Ranges)
IV or 50mV (LOW LEVEL)
lOQ^A 1mA
e
0.2% + 1 counts
0.3% + 2 counts
(At 120Hz, 1kHz) | 0.3% + 2 counts
(At 10kHz) | 0.3% + 2 counts
10mA 40mA
(Test signal level; IV)
(Test signal level; 50mV)
1% + 2 5%+ 2
■
Same as -tt-v*-
0.2% + (2 + 200/Cx) counts
0.5% + (2 + 200/Cx) counts
0.3% + (2 + 1000/Cx) counts
2 + 10
(At 120Hz, 1kHz) 1 0.3% + (2 + Cx/500) c ounts
(At 10kHz) 0.5% + (2 + Cx/500) counts
ode Same as +*+*+ ■
At 120Hz, 1kHz
(Test signal level; IV)
At 10kHz
At 120Hz, 1kHz
(Test signal level; 50mV)
At 10kHz
*1 Calculated from D value as a reciprocal number.
*2 Typical data, varies with value of D and number of counts.
*3 ±{% of reading + counts). Cx is capacitance readout in counts. This accuracy only applies for
D values to 1.999. (For higher D values, refer to General Information).
*4 (5% + 2 counts) at 1kHz.
Accuracy applies over a temperature range of 23°C ± 5°C (At 0 c C to 55°C, error doubles).
Note: C accuracy for higher D values are unspecified.
Section I
Table 1-1
1-3

Section I
Table 1-1
Model 4262A
Ranges
Test Signal
Level *2
D(l/Q)
Accuracy
Table 1-1. Specifications (Sheet 3 of 4).
L-D, L-Q MEASUREMENT
lO.OOmH
lOO.OmH lOOOmH 10.00H 100.OH
lOOOpH
lO.OOmH lOO.OmH lOOOmH 10.00H
100.OpH lOOOpH lO.OOmH
lOO.OmH lOOOmH
1000H
100. OH
.001^19.9 (2 Ranges)
0.05^1000 (4 Ranges)
L Accuracy *3
-rjnrMWr
AUTO
-O
AUTO
-O-
-'WHW-
AUTO
(At 120Hz, 1kHz)
(At 10kHz)
0 .2% + 2 counts
0.3% + 2 0.2% + 2 counts
Same as Mode
0.3% + 2 counts
0.3% + 2 counts
1 % + 2 counts
1% + 2 5%+ 2
(At 120Hz, 1kHz)
(AtlOkHz)
e as -GD- M
(At 120Hz, 1kHz) |0.3% +
(At 10kHz) [0.5% + (3 + Lx/500)
0.2% + (3 + 200/Lx) counts
0.5% + (3 + 200/Lx) counts
Same as -wmwt Mode
1 % +
-tool ^'(S'-soo
(At 120Hz, 1kHz)
(At 1kHz)
*1 Calculated from D value as a reciprocal number.
*2 Typical data, varies with value of D and number of counts.
*3 i(% of reading + counts). Lx is inductance readout in counts. This accuracy only applies for
D values to 1.999.
Accuracy applies over a temperature range of 23°C ± 5*0. (At 0°C to 55°C, error doubles).
R/ESR MEASUREMENT
120Hz
Ranges R/ESR 1kHz lOOOrofi lkOOft 100.0S2 1000£2 lO.OOkft
10kHz
Test Signal
Level
Accuracy *2
AUTO
*1 Typical data, varies with number of counts.
*2 ±(% of reading + counts).
*3 (0.5% + 2 counts) on 10.00MQ range at 10kHz.
** Measurement range for ESR (equivalent series resistance) is from Imfi to 19.99kn (typical), which
varies with series capacitance and inductance value .... refer to “REFERENCE DATA”.
Accuracy applies over a temperature range of 23°C ± 5°C. (At 0°C to 55°C S error doubles.)

Model 4262A
Table 1-1. Specifications (Sheet 4 of 4).
Section I
Table 1-1
OPTIONS
Option 001: Simultaneous BCD output of LCR
and DQ data (positive true). Max. sink
current 16mA. Mating connector (P/N
1251-0086). (Alternate BCD output
of LCR and DQ data selectable by
switch on internal board).
Option 004: Digital comparator (can not be
used with OPT 101). Compares meas¬
ured value with high and low limit set¬
tings for LCR or DQ and provides
HIGH, IN, LOW comparison outputs.
Limit setting range: 0000 - 1999 for each
limit switch.
Comparison output: Visual, relay contact,
and TTL level.
Visual: 3 LED’s indicate HIGH(red), IN
(green), or LOW (red).
Relay contacts:
SPST contacts to circuit common
for each HIGH, IN and LOW output.
TTL level:
Open collector circuits to high level
(open) for each HIGH, IN and LOW
outputs (fanout max. 30mA).
Option 101: HP-IB data output & remote con¬
trol.
Remotely controllable functions:
Function (L, C, R/ESR, a LCR)
Loss (D, Q)
LCR range
DQ range
Circuit mode
Test frequency & level
Trigger
Self test
Data output: C - D/Q, L - D/Q, R/ESR
Internal function allowable subsets:
SHI, AH1, T5, L4, RL1, DC1, SRI
and DTI.
Data output format: Either of two formats
may be selected. Switchable at rear
panel (no + sign outputs).
Format A.
SFFT±N.NNNE+NN, SF±N.NN(6r)@
Format B.
SFFT±N.NNNE±NN(CR)@
SF±N.NN@)@)
SFFT
L-Test Frequency
—Measurement Equivalent Circuit
^-Measurement Status
SF
L-Loss measurement D or Q
Measurement status
Option 010: 100Hz test frequency instead of
120Hz.
ACCESSORIES AVAILABLE
16061A: Test fixture, direct coupled, 5-terminal
Two kinds of inserts are included for
components with either axial or radial
leads. Usable on all ranges of 4262A.
16062A: Test cable with alligator clips, 4-termi-
nal. Useable for low impedance meas¬
urements. Measurement range at 1kHz
is L 2H, C > 200nF and R <, 10ka
[For L and C measurements, these
ranges increase by xlO at 120 (100)Hz
and decrease by same factor at
10kHz].
16063A: Test cable with alligator clips, 3-termi-
nal. Useable for high impedance meas¬
urements. Measurement range at 1kHz
is L ^ 3mH, C £ 10 m F and R 2:200«.
[For L and C measurement, these
ranges increase by xlO at 120(100)Hz
and decrease by same factor at
10kHz].
1 -

Section I
Table 1-2
Model 4262A
Table 1-2. General Information.
Measurement Times (typical):
For a 1000 count measurement on a low
loss component on a fixed range:
1kHz, 10kHz
120(100)Hz
When autorange is selected the following
times per range step must be added to
the above times:
1kHz, 10kHz
120(100)Hz
45ms/180ms
150ms/670ms
When U-CL is displayed, the faster
ranging time is selected.
Reading Rate:
Internal - Approx. 30ms between end of
measurement and start of next cycle.
External - Measurement cycle is initiated
by external trigger input.
High D Factor Accuracies:
Typical
( 2, on 10.00 range).
Circuit Mode
Accuracy
5% + (2 + 1000/Cx)
HhW— 0
5 % 4- (5 4- Cx/500)
5%+(5 + Lx/500)
o^innr^wo
5 % 4-(3 4- 200/Lx)
ESR (Equivalent Series Resistance)
Measurement:
Following tables show ESR measure¬
ment range for capacitors and inductors.
Function
Meas. Time
c &
C/L 220-260ms
fl
u
R 120-160ms
s
C/L
900ms
R 700mS
I? £ 5 8
100m 1 10
10m 100m I
710004 10m 100m
a
«
> 100 e 1000* 10m
s
I 10^ 100^ 1000 j
k
§ In - lOn ■ 100t/
lu- In- li'pf
G1p lu - 1-
In .Olp - .Ip
2 or 1
Digit Duplay
3 or 4
Digit Display
_i__JJ
Measurement Range of ESR (SI)
: 1 10 100-
100m- 1 •• 10-
X
7 lOtnr- 100m- 1-
o
■ a
** lm»- 10® - 100m-
<o
u
J lOOp - lm - 10m-
I 10p- !00p- ImU*^
Ip- I0p- lOOpii
2 or I 3 or 4
Digit Display Digit Display
. ... sFor | Indf fc frra* . » if .
.1 pi- Ip*- 10p*
Measurement Range of ESR (SI)
( mS)
IOOO —
aoo —
0OO —
TOO-
| 600 —
500 -.
£ 400 —
MEASURING TIME
— When LCR RANGE is set to MANUAL
Cp,l_«
Ca,l-p | it hi
R«
Rp
4000
C Counts 3
Sum of Counts on LCR and DISSIPATION FACTOR Dlsployt

Model 4262A
1kHz and 10kHz and about 900 milliseconds at
120Hz. The wide range capability of the 4262A
enables a measurement range from small capaci¬
tances such as mica capacitors and the para¬
sitic capacitance of a semiconductor device
through high capacitances such as the measurement
of electrolytic capacitors to be covered. A wide
range of inductance measurements from the in¬
ductance of a high frequency transformer to that
of a power transformer can be measured. The wide
resistance range permits the measurement of wire-
wound resistors through the measurement of solid
resistors. In parallel capacitance measurements,
either a test signal level of lVrms, or 50mVrms
can be selected.
1-7. The 4262A has the capability of making
capacitance, inductance, and resistance deviation
measurements. This function is enabled by pushing
the A LCR switch to display the deviation of a re¬
ference value. When the A LCR switch is depressed
the reference value is obtained and memorized
from the preceding measurement. The practi¬
cal use of this feature is evident when it is desired
to make a measurement on a variable capacitor:
First, the minimum value is measured, then the A
LCR button is pushed. Minimum to maximum capa¬
citance is now displayed as the capacitor is rotated
through its range. For parallel capacitance meas¬
urements, test signal levels of either lVrms or
SOmVrms may be selected. Other versatile 4262A
capabilities and features are, for example, the use
of internal and external dc bias voltages, LC zero
adjustment, and options providing BCD output,
HP-IB interfacing capability, or a comparator func¬
tion.
1-8. SPECIFICATIONS.
1-9. Complete specifications of the Model 4262A
LCR Meter are given in Table 1-1. These specifi¬
cations are the performance standards or limits
against which the instrument is tested. The test
procedures for the specifications are covered in
Section IV Performance Tests. Table 1-2 lists gen-
Figure 1-2. Serial Number Plate.
Section I
Paragraphs 1-7 to 1-16
eral information. General information is not speci¬
fications but is typical characteristics included as
additional information for the operator. When the
4262A LCR Meter is shipped from the factory, it
meets the specifications listed in Table 1-1.
1-10. SAFETY CONSIDERATIONS.
1-11. The Model 4262A LCR Meter has been
designed to conform to the safety requirements of
an IEC (International Electromechanical Com¬
mittee) Safety Class I instrument and is shipped
from the factory in a safe condition.
1-12. This operating and service manual contains
information, cautions, and warnings which must be
followed by the user to ensure safe operation and
to maintain the instrument in a safe condition.
1-14. Hewlett-Packard uses a two-section nine
character serial number which is marked on the se¬
rial number plate (Figure 1-2) attached to the in¬
strument rear panel. The first four digits and the
letter are the serial prefix and the last five digits are
the suffix. The letter placed between the two sec¬
tions identifies country where instrument was
manufactured. The prefix is the same for all iden¬
tical instruments; it changes only when a change is
made to the instrument. The suffix, however, is as¬
signed sequentially and is different for each in¬
strument. The contents of this manual apply to in¬
struments with the serial number prefix(es) listed
under SERIAL NUMBERS on the title page.
1-15. An instrument manufactured after the
printing of this manual may have a serial number
prefix that is not listed on the title page. This un¬
listed serial number prefix indicates the instrument
is different from those described in this manual.
The manual for this new instrument may be ac¬
companied by a yellow Manual Changes supple¬
ment or have a different manual part number.
This supplement contains “change information”
that explains how to adapt the manual to the
newer instrument.
1-16. In addition to change information, the
supplement may contain information for correct¬
ing errors (called Errata) in the manual. To keep
this manual as current and accurate as possible,
Hewlett-Packard recommends that you periodically
request the latest Manual Changes supplement. The
supplement for this manual is identified with this
manual’s print date and part number, both of
which appear on the manual’s title page. Com¬
plimentary copies of the supplement are available
from Hewlett-Packard. If the serial prefix or
number of an instrument is lower than that on title
page of this manual, see Section VII Manual
Changes.
1-7
M3. INSTRUMENTS COVERED BY
MANUAL,

Section I
Paragraphs 1-17 to 1-33
Model 4262A
147. For information concerning a serial number
prefix that is not listed on the title page or in the
Manual Changes supplement, contact your nearest
Hewlett-Packard office.
1-18. OPTIONS.
1-19. Options for the Model 4262A LCR Meter
are available for adding the following capabilities:
Option 001: BCD Parallel Data Output.
Option 004: Comparator. A comparator func¬
tion providing GO/NO-GO judge¬
ment with HIGH and LOW limits
for LCR and D/Q.
Option 101: HP-IB Interface.
Option 010: 100Hz Test Frequency.
(instead of 120Hz)
Options 907, 908 or 909 are handle or rack
mount kits. See paragraph 1-29
for details.
Option 910: Extra Manual.
1-20. OPTION 001.
1-21. The 4262A option 001 provides separate
BCD parallel data output for L, C, R/ESR and
dissipation factor or quality factor simultaneously
from the two rear panel connectors. With this op¬
tion, external data processing devices such as a
digital printer can be used with the 4262A.
1-22. OPTION 004.
1-23. The 4262A Option 004 provides for
GO/NO-GO judgement by comparing L, C, R/ESR
and D/Q values to HIGH and LOW limits. Three
judgement outputs are provided: LED lamp dis¬
play, relay contacts, or TTL level voltages (open
collectors):
HIGH . .measured, value is not less than HIGH
limit.
IN . .. .measured value is less than HIGH limit
and not less than LOW limit.
LOW ...measured value is less than LOW limit.
1-24. OPTION 101.
1-25. The 4262A Option 101 provides interfac¬
ing functions to both transfer L, C, R/ESR and
D/Q data to HP Interface Bus line and to receive
remote control signals from HP Interface Bus line.
1-26. OPTION 010.
1-27. The 4262A Option 010 provides test fre¬
quencies of 100Hz, 1kHz, and 10kHz (100Hz is
used instead of standard 120Hz). All other electri¬
cal performance is the same as that of standard in¬
strument.
1-28. OTHER OPTIONS.
1-29. The following options provides mechanical
parts necessary for rack mounting and hand carry ¬
ing:
Option 907: Front Handle Kit.
Option 908: Rack Flange Kit.
Option 909: Rack Flange and Front Handle
Kit.
The installation procedures for these options are
detailed in section II.
1-30. The 4262A Option 910 provides an extra
copy of the operating and service manual.
1-31. ACCESSORIES SUPPLIED.
1-32. Figure 14 shows the HP Model 4262A
LCR Meter, power cord (HP Part No. 8120-1378),
and fuses (HP Part No. 2110-0007 and 2110-0202).
1-33. ACCESSORIES AVAILABLE.
1-34. For effective and easy measurement* three
styles of fixtures and leads for the measurement
of various components are available. These are
listed in Table 1-1, A brief description of each of
these fixtures and leads is given in Table 1-3. Refer
to Section III Figure 3-3 on page 3-8 for detailed
information on these devices.

Section I
Table 1-3
Table 1-3. Accessories Available.
Extender Board used for 4262A
troubleshooting.

Section I
Table 1-4
Model 4262A
Table 1-4. Recommended Test Equipment.
Instrument
Critical Specifications
Recommended
Model
*Use
Frequency Counter
Frequency Range: 40Hz to 10kHz
Sensitivity: SOmVrms min.
HP 5300A/
w 5306A
P
Capacitance Standard
(See para. 4-3)
Capacitance Values: lOOpF, lOOOpF, lOnF,
lOOnF, lOOOnF and 10pF
GR Type 1413
GRType 1417
P* A
Resistance Standard
(See para. 4-3)
Resistance Values: Ikfi, lOkft, lOOkfl and
10M n
GR Type 1443-Y
P s A
Inductance Standard
(See Para. 4-3)
Inductance Value: lOOmH
GR Type 1482-L P
DC Voltmeter
Voltage Range: IV to 10V
Sensitivity: lOmV min.
HP 5300A/
w 5306A
P, A
Oscilloscope
Bandwidth: 10MHz min.
Vertical Sensitivity: 5mV/div.
Horizontal Sweep Rate: lps/div.
HP 1740A
A, T
Signature Analyzer
HP 5004A
T
Current Tracer
HP 547A
T
Service Kit
Signature Analysis Test Board
HPP/N:
04262-87002
T
DUT Box Comprises L s C and R components whose
values are calibrated at 120Hz and 1kHz.
HP 16361A
m
1 DUT Box
Comprises L, C and R components whose
values are calibrated at 10kHz.
HP 16362A
P» A
*P=Performance Test A=Adjustments Troubleshooting

Model 4262A
Section II
Paragraphs 2-1 to 2-11
SECTION II
INSTALLATION
2-1. INTRODUCTION.
2-2. This section provides installation instructions
for the Model 4262A LCR Meter. The section also
includes information on initial inspection and
damage claims, preparation for using the 4262A,
packaging, storage, and shipment.
2-3. INITIAL INSPECTION.
2-4. The 4262A LCR Meter, as shipped from the
factory, meets all the specifications listed in Table
1- 1. On receipt, inspect the shipping container for
damage. If the shipping container or cushioning
material is damaged, notify the carrier as well as
the Hewlett-Packard office and be sure to keep the
shipping materials for carrier’s inspection until the
contents of the shipment have been checked for
completeness and the instrument has been checked
mechanically and electrically. The contents of the
shipment should be as shown in Figure 1-1. The
procedures for checking the general electrical op¬
eration are given in Section III (Paragraph 3-5 Ba¬
sic Operating Check) and the procedures for
checking the 4262A LCR Meter against its specifi¬
cations are given in Section IV. Firstly, do the self
test. If the 4262A LCR Meter is electrically ques¬
tionable, then do the Performance Tests to deter¬
mine whether the 4262A has failed or not. If con¬
tents are incomplete, if there is mechanical damage
or defects (scratches, dents, broken switches, etc.),
or if the performance does not meet the self test or
performance tests, notify the nearest Hewlett-
Packard office (see list at back of this manual). The
HP office will arrange for repair or replacement
without waiting for claim settlement.
2- 5. PREPARATION FOR USE.
2-6. POWER REQUIREMENTS.
2-7. The 4262A requires a power source of 100,
120, 220Volts ac ±10%, or 240Volts ac +5%, -10%,
48 to 66Hz single phase. Power consumption is
approximately 55 watts.
WARNING
IF THIS INSTRUMENT IS TO BE
ENERGIZED VIA AN EXTER¬
NAL AUTOTRANSFORMER FOR
VOLTAGE REDUCTION, BE
SURE THAT THE COMMON
TERMINAL IS CONNECTED TO
THE NEUTRAL POLE OF THE
POWER SUPPLY.
2-8. LINE VOLTAGE AND FUSE SELECTION.
CAUTION
BEFORE TURNING THE 4262A
LINE SWITCH TO ON, VERIFY
THAT THE INSTRUMENT IS SET
TO THE VOLTAGE OF THE
POWER SUPPLIED.
2-9. Figure 2-1 provides instructions for line volt¬
age and fuse selection. The line voltage selection
card and the proper fuse are factory installed for
the voltage appropriate to instrument destination.
CAUTION
USE PROPER FUSE FOR LINE
VOLTAGE SELECTED.
CAUTION
MAKE SURE'THAT ONLY FUSES
FOR THE REQUIRED RATED
CURRENT AND OF THE SPECI¬
FIED TYPE ARE USED FOR RE¬
PLACEMENT. THE USE OF
MENDED FUSES AND THE
SHORT-CIRCUITING OF FUSE-
HOLDERS MUST BE AVOIDED.
2-10. POWER CABLE.
2-11. To protect operating personnel, the
2-1

Section II
Model 4262A
Paragraph 2-12
SELECTION OF OPERATING VOLTAGE
1. Disconnect power cable and slide module
window to left.
2. Pul! FUSE PULL lever and rotate to left.
This removes line fuse
3. Select operation voltage by orienting PC
board to position desired voltage on top-
left side. Push board firmly into module
slot.
4. Rotate FUSE PULL lever back to its normal
position and re-insert fuse in holder be
careful to select correct fuse value.
Operating voltage is shown in module window
and is usually set to 120V at factory.
Operating Voltage
Fuse
HP Part No.
Description
lOOVac or 120Vac
220Vac or 240Vac
2110-0007
2110-0202
1 A 250V Slow Blow
0.5A 250V Slow Blow
Figure 2-1. Voltage and Fuse Selection.
National Electrical Manufacturer’s Association
(NEMA) recommends that the instrument panel
and cabinet be grounded. The Model 4262A is e-
quipped with a three-conductor power cable which,
when plugged into an appropriate receptacle,
grounds the instrument. The offset pin on the
power cable is the ground wire,
2-12. To preserve the protection feature when
operating the instrument from a two contact
outlet, use a three prong to two prong adapter
(HP Part No. 5080-3149) and connect the
green grounding tab on the adapter to power
line ground.
CAUTION
THE MAINS PLUG MUST ONLY
BE INSERTED IN A SOCKET
OUTLET PROVIDED WITH A
PROTECTIVE EARTH CONTACT.
THE PROTECTIVE ACTION
MUST NOT BE NEGATED BY
THE USE OF AN EXTENSION
CORD (POWER CABLE) WITH¬
OUT PROTECTIVE CONDUCTOR
(GROUNDING).

Model 4262A
Section II
Paragraphs 2-13 to 2-28
2-13. Figure 2-2 shows the available power cords,
which may be used in various countries including
the standard power cord furnished with the in¬
strument. HP Part number, applicable standards for
power plug, power cord color, electrical character¬
istics and countries using each power cord are
listed in the figure. If assistance is needed for se¬
lecting the correct power cable, contact nearest
Hewlett-Packard office.
2-14. Interconnections.
2-15. When an external bias is applied to the
sample capacitor through DC BIAS input con¬
nectors on the 4262A rear panel, both plus and
minus sides of the external power supply should be
connected to the plus and minus sides of the
4262A EXT DC BIAS connector, respectively,
CAUTION
THE MAINS PLUG MUST BE IN¬
SERTED BEFORE EXTERNAL
CONNECTIONS ARE MADE TO
MEASURING AND/OR CON¬
TROL CIRCUITS.
2-16. Operating Environment.
2-17. Temperature. The instrument may be op¬
erated in temperatures from 0°C to +55 9 C.
2-18. Humidity. The instrument may be operated
in environments with relative humidities to 95%
to 40°C. However, the instrument should be
protected from temperature extremes which cause
condensation within the instrument.
2-19. Installation Instructions.
2-20. The HP Model 4262A can be operated on
the bench or in a rack mount. The 4262A is ready
for bench operation as shipped from the factory.
For bench operation a two-leg instrument stand is
used. For use, the instrument stands are de¬
signed to be pulled towards the front of instrument.
2-21. Installation of Options 907, 908 and 909.
2-22. The 4262A can be installed in a rack and
be operated as a component of a measurement
system. Rack mounting information for the 4262A
is presented in Figure 2-3.
2-23. STORAGE AND SHIPMENT.
2-24. Environment.
2-25. The instrument may be stored or shipped
in environments within the following limits:
Temperature.-40°C to +75°C
Humidity. to 95%
Altitude...50,000ft
The instrument should be protected from temper¬
ature extremes which cause condensation inside
the instrument.
2-26. Packaging.
2-27. Original Packaging. Containers and mat¬
erials identical to those used in factory packaging
are available through Hewlett-Packard offices. If
the instrument is being returned to Hewlett-
Packard for servicing, attach a tag indicating the
type of service required, return address, model
number, and full serial number. Also mark the
container FRAGILE to assure careful handling. In
any correspondence, refer to the instrument by
model number and full serial number.
2-28. Other Packaging. The following general in¬
structions should be used for re-packing with com¬
mercially available materials:
a. Wrap instrument in heavy paper or plastic. If
shipping to Hewlett-Packard office or service
center, attach tag indicating type of service
required, return address, model number, and
full serial number.
b. Use strong shipping container. A double-wall
carton made of 350 pound test material is
adequate.
c. Use enough shock absorbing material (3 to 4
inch layer) around all sides of instrument to
provide firm cushion and prevent movement
inside container. Protect control panel with
cardboard.
d. Seal shipping container securely.
e. Mark shipping container FRAGILE to ensure
careful handling.
f. In any correspondence, refer to instrument by
model number and full serial number.
2-3

Section I!
Figure 2-2
Model 4262A
Figure 2-2. Power Cables Supplied