Keithley Instruments, Inc. warrants this product to be free from defects in material and workmanship for a period of 1 year from
date of shipment.
Keithley Instruments, Inc. warrants the following items for 90 days from the date of shipment: probes, cables, rechargeable batteries, diskettes, and documentation.
During the warranty period, we will, at our option, either repair or replace any product that proves to be defective.
To exercise this warranty, write or call your local Keithley representative, or contact Keithley headquarters in Cleveland, Ohio. You
will be given prompt assistance and return instructions. Send the product, transportation prepaid, to the indicated service facility.
Repairs will be made and the product returned, transportation prepaid. Repaired or replaced products are warranted for the balance
of the original warranty period, or at least 90 days.
LIMITATION OF WARRANTY
This warranty does not apply to defects resulting from product modification without Keithley’s express written consent, or misuse
of any product or part. This warranty also does not apply to fuses, software, non-rechargeable batteries, damage from battery leakage, or problems arising from normaI wear or failure to follow instructions.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTI ES, EXPRESSED OR IMPLIED, INCLUDING ANY IMPLIED
WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. THE REMEDIES PROVIDED HEREIN
ARE BUYER’S SOLE AND EXCLUSIVE REMEDIES.
NEITHER KEITHLEY INSTRUMENTS, INC. NOR ANY OF ITS EMPLOYEES SHALL BE LIABLE FOR ANY DIRECT,
INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF ITS INSTRU-
MENTS AND SOFTWARE EVEN IF KEITHLEY INSTRUMENTS, INC., HAS BEEN ADVISED IN ADVANCE OF THE POS-
SIBILITY OF SUCH DAMAGES. SUCH EXCLUDED DAMAGES SHALL INCLUDE, BUT ARE NOT LIMITED TO: COSTS
OF REMOVAL AND INSTALLATION, LOSSES SUSTAINED AS THE RESULT OF INJURY TO ANY PERSON, OR DAMAGE TO PROPERTY.
Keithley Instruments, Inc. l 28775 Aurora
CHINA:
FRANCE: Keithley Instruments SARL l BP 60 l 3 All&e des Garays l 91122 Palaiseau (adex * 33-I-60-11-51-55 * Fax: 33-1-60-I l-77-26
GESMANY Keithley Instruments GmbH * Landsberger Strasse 65 l D-821 10 Germering, Munich l 49-89-8493070 l Fax 49-89-84930759
GREAT BRITAIN: Keithley Instruments, Ltd. l The Minster l 58 Porunan Road l Reading, Berkshire, England RG3 lE.4 l 44-l 189-596469 l Fax: 44- 1189-575666
ITALY: Keithley Instruments SRL l Viale S. Gimignano 38 l 20146 Milano * 39-2-48303008 l Fax: 39-z-48302274
NETHERLANDS: Keithley Instruments BV * Avelingen West 49 * 4202 MS Gorinchem * 31-(0)183-635333 l Fax 31-(0)183-630821
SWITZERLAND:
TAIWAN: Keithley Instruments Taiwan l IFI.., 85 PO Ai Street l Hsinchu, Taiwan l 886-3-572-9077 * Fax: 886-3-572-9031
Keithley Instruments SA. Kriesbachsuasse 4 l 8600 Diibendorf l 41-I-8219444 *Fax: 41-l-8203081
Road l Cleveland, OH 44139 l 440-248-0400 l Fax: 440-248-6 168 l http://www.keithley.com
Model 3330 LCZ Meter
Service Manual
01993, Keithley Instruments, Inc.
Test Instrumentation Group
All rights reserved.
Cleveland, Ohio, U.S.A.
First Printing February 1993
Document Number: 3330-902-07 Rev. A
ALI Keithley product names are trademarks or registered trademarks of Keithley Instruments, Inc.
Other brand and product names are trademarks or registered trademarks of their respective holders.
Safety Precautions
The following safety precautions should be observed before using
this product and any associated instrumentation. Although some instruments and accessories would normally be used with non-hazardous voltages, there are situations where hazardous conditions
may be present.
This product is intended for use by qualified personnel who recog-
nize shock hazards and are familiar with the safety precautions required to avoid possible injury. Read the operating information
carefully before using the product.
The types of product users are:
Responsible body
and maintenance of equipment, for ensuring that the equipment is
operated within its specifications and operating limits, and for en-
suring that operators are adequately trained.
Operators
trained in electrical safety procedures and proper use of the instmment. They must be protected from electric shock and contact with
hazardous live circuits.
Maintenance personnel
to keep it operating, for example, setting the line voltage or replacing consumable materials. Maintenance procedures are described in
the manual. The procedures explicitly state if the operator may per-
form them. Otherwise, they should be performed only by service
personnel.
Service personnel
safe installations and repairs of products. Only properly trained service personnel may perform installation and service procedures.
is the individual or group responsible for the use
use the product for its intended function. They must be
perform routine procedures on the product
are trained to work on live circuits, and perform
Users of this product must be protected from electric shock at all
times. The responsible body must ensure that users are prevented
access and/or insulated from every connection point. In some cases,
connections must be exposed to potential human contact. Product
users in these circumstances must be trained to protect themselves
from the risk of electric shock. If the circuit is capable of operating
at or above 1000 volts,
exposed.
As described in the International Electrotechnical Commission
(IEC) Standard IEC 664, digital multimeter measuring circuits
(e.g., Keithley Models 175A, 199,2000,2001,2002, and 2010) are
Installation Category II. All other instruments’ signal terminals are
Installation Category I and must not be connected to mains.
Do not connect switching cards directly to unlimited power circuits.
They are intended to be used with impedance limited sources.
NEVER connect switching cards directly to AC mains. When connecting sources to switching cards, install protective devices to lim-
it fault current and voltage to the card.
Before operating an instrument, make sure the line cord is connect-
ed to a properly grounded power receptacle. Inspect the connecting
cables, test leads, and jumpers for possible wear, cracks, or breaks
before each use.
For maximum safety, do not touch the product, test cables, or any
other instruments while power is applied to the circuit under test.
ALWAYS remove power from the entire test system and discharge
any capacitors before: connecting or disconnecting cables or jumpers, installing or removing switching cards, or making internal
changes, such as installing or removing jumpers.
no conductive part of the circuit may be
Exercise extreme caution when a shock hazard is present. Lethal
voltage may be present on cable connectorjacks or test fixtures. The
American National Standards Institute (ANSI) states that a shock
hazard exists when voltage levels greater than 30V RMS, 42.4V
peak,or60VDC~epresent.Agoodsafetypracticeistoexpect
that hazardous voltage is present in any unknown circuit before measuring.
Do not touch any object that could provide a current path to the
common side of the circuit under test or power line (earth) ground.
Always make measurements with dry hands while standing on a
dry, insulated surface capable of withstanding the voltage being
measured.
The instrument and accessories must be used in accordance with its
specifications and operating instructions or the safety of the equipment may be impaired.
The WARNING heading in a manual explains dangers that might
result in personal injury or death. Always read the associated information very carefully before performing the indicated procedure.
Do not exceed the maximum signal levels of the instruments and accessories, as defined in the specifications and operating information, and as shown on the instrument or test fixture panels, or
switching card.
When fuses are used in a product, replace with same type and rating
for continued protection against fire hazard.
Chassis connections must only be used as shield connections for
measuring circuits, NOT as safety earth ground connections.
If you are using a test fixture, keep the lid closed while power is ap-
plied to the device under test. Safe operation requires the use of a
lid interlock.
Ifa@
screw is present, connect it to safety earth ground using the
wire recommended in the user documentation.
The ! a symbol on an instrument indicates that the user should re-
fer to the operating instructions located in the manual.
The A symbol on an instrument shows that it can source or mea-
sure 1000 volts or more, including the combined effect of normal
and common mode voltages. Use standard safety precautions to
avoid personal contact with these voltages.
The CAUTION heading in a manual explains hazards that could
damage the instrument. Such damage may invalidate the warranty.
Instrumentation and accessories shall not be connected to humans.
Before performing any maintenance, disconnect the line cord and
all test cables.
To maintain protection from electric shock and fire, replacement
components in mains circuits, including the power transformer, test
leads, and input jacks, must be purchased from Keithley Instruments. Standard fuses, with applicable national safety approvals,
may be used if the rating and type are the same. Other components
that are not safety related may be purchased from other suppliers as
long as they are equivalent to the original component. (Note that selected parts should be purchased only through Keithley Instruments
to maintain accuracy and functionality of the product.) If you are
unsure about the applicability of a replacement component, call a
Keithley Instruments office for information.
To clean the instrument, use a damp cloth or mild, water based
cleaner. Clean the exterior of the instrument only. Do not apply
cleaner directly to the instrument or allow liquids to enter or spill
on the instrument.
Rev. l/99
HOW TO USE THIS MANUAL
Details procedures to verify that the instrument meets
stated specifications.
r
Describes basic operating principles for the varicws circuits in
the Model 3330.
Covers fuse replacement, calibration and repair of the instrument, and lists replacement parts.
WARNING
The information in this manual is intended for qualified service personnel who can recognize possible shock hazards. Do
not attempt these procedures unless you are qualified to do so.
The procedures outlined in this section may be used to
verifythattheModel333oLcZMeterisoperatingwithin
Emits stated in the specScations. Performance verification may be done when the instrument is first received to
ensure that no damage or misadjustment has occurred
during shipment. Verification may also be performed
whenever there is a question of instrument accuracy.
NOTE
If instrument performance is outside the
specified range, and the instrument is still under warranty, contact your Keithley representative or the factory to determine the correct
course of action.
Performance verification fahs into the foIlowing two general categories:
1.2 INITIAL CONDITIONS
The Model 3330 should be turned on and allowed to
warm up for at least one-half hour before performing the
verification procedures. (The test equipment should also
beallowedtowarmupforthetimeperiodrecommended
by the manufacturer..) If the instrument has been subjected to extreme temperature or humidity, allow additional time for internal circuits to reach normal operating
temperature. Typically, it takes one additional hour to
stabilize a unit that is 10°C (Wl?,I outside the specified
temperature range.
1.3 LINE POWER
Be sure to set the line voltage switch on the rear panel to
the correct line voltage. The instrument should be tested
while operating on a line voltage within +5% of the line
voltage switch setting and at a line frequency from 48Hz
to 62Hz.
1.4 VERIFICATION LIMITS
l
Measurement signal tests (paragraph 1.5)
l
Measurement accuracy and reading checks (para-
graph 1.6)
The performance verification limits stated in this section
reflect only the accuracy specifications of the Model 3330.
They do not include test equipment tolerance.
1-l
SECTION 1
Performance Verification
1.5 MEASUREMENT SIGNAL TESTS
Measurement signal tests measure various characteristics of the test signal that is applied to the DTJT. These
tests include:
l Frequency accuracy
. Measurement signal level accuracy
l
Measurement signal distortion
0 Output impedance accuracy
l li&mal
* External DC bias voltage range
Manufacturer Model
Keithley 197A DMM (AC volts,
DC bias voltage accuracy
Table l-l. Recommended Test Equipment for Measurement Signal Tests
Description
DC volts, 5-l /2 digits)
1.51 Environmental Conditions
All measurement signal tests should be performed at an
ambienttemperatureof23”+5”Candatarelativehumidity of 50% + 30%.
IS.2 Recommended Test Equipment
Table l-l lists the test equipment required to perform the
measurement signal tests. The procedures for measurement signal verification tests are based on using this exact equipment. Alternate equipment may be used as long
as ihat equipment has specifications at least good as
those stated in Table l-l.
Specifications
2VDC range; +(O.Oll% of rdg + 2 counts)
2VAC range; z!$O.35% of rdg + 100 counts)
Philips
PM 6654C Timer/counter
PM 9678
Panasonic
Keithley
Keithley
VP-772Z4 Audio analyzer
1681 Test leads
7051-2
Keithley 7754-3
Keithley
Keithley
Pomona
3324
3325
1468
TCXO option
DC power supply
BNC interconnect cable
BNC to alligator cable
Test leads
Test leads
BNC-banana adapter
Capacitor
Resistor
switch
O.OlHz-12OMHz; time base aging
<l x 10-7/month
lOI&-1lOkHz; 0.01% accuracy at full scale; _+ldB harmonic distortion accuracy from lOH2 to 15.99kHz
04OVDC adjustable, <5mVp-p ripple
Two leads terminated with banana plug and clip-on
probes
5OQ coaxial cable (RG58C), male BNC connectors, 2ft.
(0.6m)
Coaxial cable, male BNC connector, two alligator clips
1. ConnecttheModel333OHCURjacktoinputAofthe
counter/timer, as shown in Figure l-l. Be sure to
co~ect the G terminal of the LCZ meter to the shield
of the connecting cable as shown
2. Set the LCZ meter operating modes as follows:
FREQ: 1kH.z
LEVELZ 1vrms
BIAS: OFF
3. set the counter/timer to measure frequency on inPUt JJ-
4. Verify that the counter reading is between
0.99995OkHz and 1.00005OkHz &!Spprn~.
1.5.4 Measurement Signal Level
Accuracy
1. Conned the Model 3330 H CUR jack to the DMM, as
shown in Figure l-2. be sure to connect the G termi-
nal of the LCZ meter. to the shield of the connecting
cable as shown.
2. Select the ACV function and auto-ranging on the
DMU
3. Set the LCZ meter operating modes as follows:
LEVEL: 1vrms
FREQ: 1kHz
BLAS: OFF
4. Verify that the DMM reading is between the limits
for lVrms, lkH2 operation, as follows:
0.97vrms to 1.03vrms (23.0%).
5. Change the LEVEL to 5OmVrms, and verify the signal level accuracy for lkHz,5OmVrm.s operation is
as follows:
47.5mVrms to.52.5mVrms (&!S.O%)
Figure z-1.
Model 3330
to cable
shield
Connections
Model 7051-2 Coaxial Cable
for
Measurement and Signal Level Accuracy
l-3
SEcnONl
Pe?yinmance vm.fication
/i I-’
Figure z-2.
Model 3330
*
L
Connect G terminal
to cable shield
Gmnecfionsfar Frequency Accuracy Measurml
/
1
1.55 Measurement Signal Distortion
1. Connect the H CUR jack of the LCZ meter to the distortion meter, as shown in Figure 13. Be sure to connect the G terminal of the LCZ meter to the cable
shield as shown.
2.
Set the LCZ meter operating modes as follows:
LEVEL: 1vrms
BIAS OFF
FREQ lkH.2
3.
Verify that the distortion reading is 0.3% or less, as
summarized in Table l-2.
Model 197A DMM
I
Model 7051-2 Coaxial Cable
C. Press the ENTER/EXlT key twice to complete
2ooHz
7.
Verify that the distortion reading is 0.3% or less.
1 S.6 Output Impedance Accuracy
1. Connect the LCZ meter to the DMM, switch, and resistor, as shown in Figure l-4. Be sure that the G terminal of the LCZ meter is connected to the cable
shield, and that the resistor and switch are connected
as shown.
2. Select the 2VAC
3.
Set the LCZ meter operating modes as follows:
Pomona 1468
programming.
range on the DMM.
Table l-2. Distortion Measurement Summary
Frequency Distortion Reading
4.
Change the frequency to 1OOkHz.
5.
Verify that the distortion reading is 0.5% or less.
6.
Set the Model 3330 frequency to 2OOHz as follows:
A. Press the SETCTP key to enter the auxiliary setup
mode. The LED
blinks, and the unit displays the present frequency in them DISPLAY area.
B. Enter a frequency of 2OOHz.
l-4
above the FREQ (HZ) marking
FREQ lkH2
LEVEL 1vrms
BIAS: OFF
4.
Set the switch to the open position, then note the
DMM reading. Call this reading VI.
5. Set the switch to the closed position, then note the
DMM reading. Call this reading Vz.
6. Compute the output impedance
from
VI and Vz as
follows:
zour = 100
Wl/VZ -
1)
IQ1
7. Verify that the output impedance computed in step 6
is between 97S2 and 10322 inclusive (S%).
Model 3339
cable shield
Figure 23. Gmnections jbr Disfortion Measuremenfs
Performance Veri.ficafion
SECTION1
Figure l-4.
Model 1681 Test Leads
R = lOOR, 0.50/o, II2 w
Connecfions for Outpuf Impedance Tests
l-5
SECTION 1
Perjbrmance verifhtion
1.5.7 Internal Bias Voltage Accuracy
1. ConnecttheLumetertotheDMMusingtheModel
3324
cables (see Figure l-5). Note that connections
are intended to measure the voltage between the H
CURandLCURtermmals.
2. Select the 2VDC
3.
Set the LCZ meter operating modes as follows:
IAl DISPLAY: C
LFivELz5omvrms
RANGE: AUTO
BIAS INT/lXTz INT (rear panel switch)
B&e&*- ~~~~~~~~ ~~~~~~~~~~~~ ~~~~~~~~~ ~~~
4.
Verify that the DMM reading is between 1.9V and
21V inclusive (*%I.
5. Set the LCZ meter to BIAS OFF.
6. Select the 2OOmVDC
7.
Verify that the DMM reading is OV flOmV.
1.5.8
External DC Bias Voltage Range
1. Connect the LCZ meter to the DC power supply, capacitor, and DMM, as shown in Figure l-6.
2. Select the DCV function and auto-ranging on the
DMM.
3.
Set LCZ meter operating modes as follows:
m DI!ZLAYz C
FREQ 12oHz
LEYELz!5omvrms
range on the DMM
range on the DMM.
BIAS lNT/EXTz EXT (rear panel switch)
BIAS: OFF
4.
Set the unit to RANGE 2 as follows:
A. Measure the value of the lo@? capacitor in the
RANGE AUTO mode (DC BIAS OFF).
B. Verify that the Model 3330 is properly measur-
ing the capacitor.
C. Press the RANGE/AUTO key, and check that
the AUTO LED goes off. The unit is now set to
RANGE 2.
5. Check the voltage
across
the capacitor with BIAS
OFF,andwithBIASONanda35Vexternalbiasvoltage SeBingon -the DC ~power 5q?plyWYmust~k
available with BIAS ON).
6. Disconnect the DMM, and measure the capacitor
value. Verify that the reading is stable to within fi
digits of the center value (four digits of span).
WARNING
Hazardous voltage (>3OW will be used in the
following steps. Do not touch the capacitor
until the test is complete, and the capacitor is
discharged.
7.
Set the unit to BIAS OFF, and set the external DC
power supply voltage to +4OV.
8. Set the LCZ meter to BIAS ON, and verify that the
BIAS fuse does not blow.
9.
Set the unit to BIAS OFF, then turn off and disconnect the external DC power supply.
Figure 1-S.
1-b
Yodel 3330
Model 3324 4-Terminal Test Leads
Model 197A DMM (Measure DCV)
I
Connections fir DC Bias Accuracy Tests
DMM Test Leads
I
-
Black (LCUR)
I
lhdd 3330 Front Panel
S&l
0
0
~
Pomona ’ 1
BNza
Adapter
Figure 1-6. Connections fDf Extemnl DC Bias Voltage Range Test
Model 7051-2 G?a%aI Cable
1 p
Pqbrnzance Vmjbtion
SECl7ON 1
1.6 MEASUREMENT ACCURACY TESTS
Measurement accuracy tests include:
l
R (resistance) measurement accuracy
0 C (capacitance> reading checks
0 L (inductance) reading checks
1.6.1
All resistance measurement accuracy tests should be performed at an ambient temperature of 23” f 1°C and at a
relative humidity of 50% rt 20%. Capacitance and inductance reading checks can be performed at 23” + 5°C.
1.6.2
Table 1-3&s the resistance standards, capacitors, mduc-
tons, and additional equipment required to perform the
measurement accuracy tests. The procedures for resktance measurement accuracy verification tests are based
onusingthese standards. Listed capacitors and inductors
are to be used to perform capacitance and inductance
Environmental Conditions
Recommended Equipment
reading checks that are not based on instrument accuracy
tZp?dfications.
NOTE
The Model 3330 makes all measurements
based on the magnitude and phase of the impedance of the DLJT connected to the UNKNOWN terminals. For that reason, verifica-
tion of resistance measurement accuracy is
sufficient to guarantee the accuracy of capacitance and inductance measurements. The resistance standards values used are the same as
those used for calibration. Capacitance and in-
ductance reading checks are included to verify that the instrument properly displays capacitance and inductance values.
1.6.3
Resistance standards used for the measurement accuracy
tests should be calibrated at certain interva.ls so as to ensure the accuracy of standards values. Standards accuracy tolerances should be added to the stated measurement limits.
Resistance Standards Accuracy
l-7
SECTTON 1
Perfomnce Verification
1.6.4
Resistance Measurement
Accuracy
Resistance accuracy measurements are made using the
resistance standards listed in Table 1-3 and the test connections shown in Figure l-7.
NOTE
BesuretoconnecttheHandLterminakofthe
resistance standards to the H and L terminals
respectively of the LCZ meter, or inaccurate
measurements may result. Do not handle the
standards excessively, or the resulting temperature rise may affect their values.
Procedure:
1. Set the Model 3330 operating modes as follows:
FREQ: 4OHz
LEVEL: 1vIm.s
SPEED: MED
RANGE: AUTO
2 Conned the OPEN resistance standard to the instru-
ment, then press ZERO OPEN. Allow the instrument
to complete the zero cycle before proceeding.
3. Connect the SHORT resistance standard to the instrument, then press ZERO SHORT. Allow the instrument to complete the zero cycle before proceeding.
4. Connect the lOO!J resistance standard to the instrument, and allow the reading to settle.
5. Verify that the I Z I and 0 readings are within the
limits shown in Table l-4 and Table l-5 respectively.
6. Repeat steps 4 and 5 for the remaining standards values listed in the table (1162 through loowZ), and verify that all readings are within the required limits.
7. Repeat steps 2 through 6 for the remaining frequencies listed in the tables.
8. Change the LEVEL to 5OmVrms, then repeat steps 2
through 7 for the frequencies summarized in Table
l-6 and Table l-7.
Table l-3. Recommended Equipment for Measurement Accuracy Tests
Description
Resistance standards
Capacitors
Inductors User supplied
Test Fixture*
*Future used to connect capacitors and inductors.
ManufachmrhBodel Values
Hewlett-Packard HP 16074.A
Calibration Standard
User supplied
Keithley 3323
OPEN, SHORT, 1OOQ 1 l&I, 1OkQ lOOw1
lOOpF, O.Oljt.F, kl%
loom, lOmH, z!zl%
l-8
Standard Resistance
Note : Connect L and H terminals properly as shown
Performance Vmficafion
SECTION1
Figure 1-7.
Table 1-4.
Resistance
Standard
Value
100a
1kLl 0.9980 to
lOu2 9.979 to
1ookQ 99.78 to
Connections for Resistance Accuracy Measuremenfs
Resistance Me asurement Accuracy Reading Limits ( 1 Z I 1 for 1Vrms Level
I Z I Reading Limits at Indicat
40
99.80 to
100.209
1.002okQ 1.0013m 1.001m l.OOlOkQ l.oOllkG!
10.021ksz 10.014m lO.Olw2 lO.OlOkQ 10.012kQ
100.~ 100.150ks2 100.12wz 100.100m 100.18kQ
l!ul
!
99.87 to
100.1322
0.9987
9.986 to
99.85 to
so0 lk 1 Sk
I
I
99.89to 99.9Oto
lOOSlS2 100.10Q
to
0.9988 to 0.9990 to
9.988 to 9.990 to
99.88 to 99.90 to
I
.
99.89to
100.1122
0.9989 to
9.988 to
99.82 to
!d Frequen
1Ok
99.87
to
100.13Q
0.9987 to
1.0013m
9.985 to
10.015kQ
’ 99.75to
I 1ooB
!VtHZ)
*
100.17&2 l&.@S2
0.9983 to 0.9960 to
l.cm7kQ 1.004Om
9.980 to
9.960 to
10.020wz 10.04oki2
-
1OOk
99.30 to
100.7m
0.9930 to
1.0070m
’ 98.80 to
101.2okQ
l-9
SEClTONl
Pelyimla?lceVtification
. I
Table l-5.
Resistance
Standard
Value
looi
lK?
lOlc.0
1 loowz
NOTE: M easurements
40 120
o” f 0.12O
0” f 0.12”
o” zk 0.13”
0” f 0.15”
Table 1-6.
Resistance
Standard
Value I-
lCHX2
40
99.70 to
100.3022
Resistance Measurement Accuracy Reading Limits (0) for 1Vrms Level
8 Reading Limik at Indicated Frecwencv (Hz)
soot lk
0” f 0.08”
o” f 0.08”
0” z!z 0.w
0” * 0.10”
should be made at 239tl”C
Resistance
0” f 0.05”
o” f o.c15°
0” f 0.05”
0” f o.cw
-L
Measurement Acwacy Reading L&nib ( 1 Z I) for ~Vz-ms Level
I Z I Reading Limik at Indicated Frequency !I&)
Il.20
99.80 to
100.208
500 lk Sk
99.82
loo.1852
o” * 0.03”
o” f o.c13°
0” f 0.03”
0” f 0.w
to 99.85 to 99.80 to
100.1552
Sk 1Ok 20k 50k
0” f 0.08” 0” + o.lo”
o” f 0.08O o” f 0.10”
00 * 0.06” o” 5 0.08”
0” f 0.08” 0” rt 0.15”
lok
99.77 to
100.2OQ 100.23sz 100.32Q
0” c 0.15” 0” * 0.25”
0” f 0.15” 0” f 0.25”
0” f 0.12” o” + 0.30”
0” f 0.20” 0” rf: 0.40”
20k
99.68 to
5Ok
98.80 to
101.20sz
look
0” i o.50°
o” f 0.50”
0” z!z 0.60”
0” f o.80°
1OOk
98.40 to
101.6oi2
1kQ
1om
lOOk!
NOTE: limits shown do not inchxde resistance standards tolerances- Au measurements to be made at 2391°C
Resistance Measurement Accuracy Reading Limits (0) for 5OVrms Level
O” f 0.12” 0’ + 0.09”
O” zk 0.12’ 0” i 0.09”
o” F 0.15” 0” f 0.09”
0” f 0.18” 0” t- 0.12”
0.9982 to
1.0018kQ 1.0015&? 1.002OkQ 1.0023lcCI 1.0032kQ
9.982 to
10.018IcQ 10.016m 10.02OkQ 10.024w2 10.035kQ
0.9985 to 0.9980 to 0.9977 to
9.984 to 9.980 to 9.976 to
99.84 to 99.76 to 99.68
o” 32 0.06”
0” rk 0.06”
0” rtr 0.06”
0” 2 0.12O o”
O” zk 0.12O 0” rfr 0.13”
0” * 0.12” 0” + 0.14O
to 99.60 to 98.20 to
zk 0.13” o” 4 0.180
0.9!%3 to
9.965 to
0” f 0.18”
0” Ik 020”
0.9880 to
1.012om
9.860 to
10.140kQ
0” + o.70°
0” z!z 0.70”
0” rtr 0.80”
0.9840 to
1.016OkR
9.800 to
10.200k!2
97.00 to
103.ooks2
o” 5 1.0”
0” T!I 1.0”
0” It 1.2’
NOTE: Readings should be taken at 239tPC
l-10
Perfomnce Vk$icatibn
SECTION I
1.6.5
Capacitance reading checks are made using the 1OOpF
and O.Olp capacitors summarized in Table l-3.
RocedLuez
1. Set the Model 3330 operating modes as follows:
Capacitance Reading Checks
NOTE
The capacitance reading check procedure is
not based on instrument accuracy specifications and is included only to show that the instrument properly displays capacitance readings. As noted previously, verification of resistance measurement accuracy is sufficient to
verify capacitance measurement accuracy.
m DISPLAYC
a DISPLAY: D
CKTMODIZ SEX
FREQ: 1kHz
LEVEL: IVrms
sirEEDzMED
RANGE: AUTO
1.6.6
Inductance reading checks are made using the lOO#I
and 1OmH inductors
Procedure:
1. Set the Model 3330 operating modes as follows:
Inductance Reading Checks
summarized in Table l-3.
NOTE
The inductance reading check procedure is
not based on instrument accuracy specifications and is included only to show that the instrument properly displays inductance readings. As noted previously, verification of resistance measurement accuracy is sufficient to
verify inductance measurement accuracy.
m DISPLAY L
m DISPLAY: Q
CKI’ MODE: SER
FREQ 1kHz
LEVEL: mms
!SPEEDMED
RANGE: AUTO
2. Connect the Model 3323 Direct Test Fixture to the
unit (Figure l-81, but do not connect the capacitor to
the test fixture at this time.
3. Short the test fixture terminals by connecting a bare
wire between them. Press ZERO SHORT, and allow
the instrument to complete the zero cycle. Remove
the shorting wire after the zero cycle is completed.
4. Press ZERO OPEN, and allow the instrument to
complete the zero cycle.
5. Connect the lOOpF, kl% capacitor to the test fixture
terminak, and verify that the capacitance reading is
within rt2% of 1OOpF (98pF to 102pFX
6. Connect the O-01@?, +I% capacitor to the test fixture
terminals, and verify that the capacitance reading is
&bi2% of 1OnF (9.8nF to 10.2nF.I.
2. Connect the Model 3323 Direct Test Fixture to the
unit (Figure l-81, but do not connect the inductor to
the test fixture at this time.
3. Short the test fixture terminals by connecting a bare
wire between them. Press ZERO SHORT, and allow
the instrument to complete the zero cycle. Remove
the shorting wire after the zero cycle is completed.
4. Press ZERO OPEN, and allow the instrument to
complete the zero cycle.
5. Connect the lOO$H, Itl% inductor to the test fixture
exminak and verify that the inductance reading is
&thin & of 100~ (98jkH to 102@.
6. Connect the IOmH, kl% inductor to the test fixture
terminals, and verify that the inductance reading is
within 22% of 1OmH (9.8mH to 10.2mH~.
l-11
SECTTOAT 1
PnJimnrmce verifif!ufion
3323 Test Fixture
Figure 1-8. Gmnections fM Cupucitunce and Inducfance Reading Checks
Capacitor or Inductor
l-12
SECTION 2
Principles of Operation
2.1 INTRODUCTION
This section discusses basic circuit operating principles
for the Model 3330 LCZ Meter.
2.2 BLOCK DIAGRAMS
Figure 2-1 shows a block diagram of the measuring system, and Figure 2-2 is a hardware block diagram.
2.3 CURRENT AND VOLTAGE
DETECTION
The instrument drives the device under test (DUTI with a
signal from the built-in oscillator, and it detects the current I flowing through the DUT and the voltage
the DUT. The current is converted to a voltage EI by the
operational amplifier and the reference resistor RR.
EV
across
Both AC signals
by the A/D converter. The microprocessor then multiplies these signals by the reference sine wave and integrates the resultant signal digitally to obtain the voltage
and current vectors (magnitude and phase) with respect
to the~referenceoscilktor siQr&Using~th.is method, it is
possible to measure only the fundamental oscillator frequency component,
and noise.
EV
and Er are converted into digital data
minimkhg the effects of distortion
2.4 IMPEDANCE CALCULATION
Impedance is calcuked by dividing the voltage vector
by the current vector. As a result, impedance is expressed
as the ratio of the magnitudes and the differences in
phase between the two vectors. Any current-to-voltage
conversion errors are corrected based on factors determined when the instrument is calibrated. In addition,
true impedance (Z=Rs + JX) is obtained by correcting residual impedance Zss and floating admittance YPP, and
the instrument automatically calculates main and auxiliary parameters from Rs and X.
2-l
SECTION2
Principles
of
Operation
Ev
Display
*
n
GPIB
Figure 2-1.
Measuring System Block Diagmm
2-2
SECTTON
Principles 0fOperafion
-
i Oscillator
$z+
I
- I
!
L
D
Y
I
L POT
I
I
---e-e--
-w--s
r
I
I)
I
S&
a
I
---------1
EXT
----w---
IN
I
Figure 2-2.
.
i
I
I IVDetector
I--------------d
Hardware Block Diagram
i
:.;;::,gg?b
zffrl
Am f
Interface
I
I
1 Power Supply 1
I
I
I
Key Soard
Display
2-3
2.5 OSCILLATOR
Theosciuator~i~e2-3)isadigitaldirectsynthesistn?e
freqyuency synthesizer, which uses a quartz oscillator to
generate the reference frequency. The quark oscihtor is
used to ensure that the synthesizer output remains sta-
ble.
The synthesizer output, which is a digital ramp signal, is
converted into a sine wave by the sine ROM and is then
crystal 4MHz
converted into an analog signal by the D/A converter.
Since the D/A converter output includes harmonics of
the desired fundamental frequency, the D/A converter
output signal is routed through the low-pass filter to obtain a pure sine wave.
TheoutputoftheosciUatortifedtotheHCURterxnhlto
be applied to the
DUT
along with the DC bias voltage.
The equivalent output impedance is approximately
lOOS2.
fc
I
Frequency - ) SINE __) D/A - Var- --) An -
Synthesizer - ROM ccnv.
t
l
Frequency
l
Runmop
Phase
- Sampling
Pulse
w Generator
c
Figure 2-3. Oscillafor Block Diagram
-/z/i
1
LPF
-
INT/EXr
Bias Voltage -
GND
11
II
-
SW-
ON/OFF
H CUR (To DUT)
0
z
2-4
Principks
SECTION2
of
Operation
2.6 CURRENT-TO-VOLTAGE
CONVERTER
ThesignalcurrentfromtheDUI’isconvertedtoavoltage
before measurement, a
rent-to-voltage converter (Figure 2-4). The converter is
made up of a high-gain operational amplifier and a reference resistor l&, which forms the feedbackloop for the op
=nP-
Since the operational amplifier has very high gain, its inverting input is at virtual ground potentiak Consequently,thecurrentflowingthroughY~canbeneglected,
and the signal current I has the same magnitude as the
current flowing through RX. As a result, the voltage
across I& which is the same as the output voltage Vour, is
simply Ilk Note that the value of RR can be changed according to the value of the DUT being measured in order
to increase the dynamic range of the instn.unenL
At higher frequencies, the gain of the operational amplifier decreases, and the value of the floating admittance
(which is made up primarily of capacitance at higher frf+
function p&onned
by the cur-
quencies) increases. Consequently, the current to ground
increases substantially, increasing the measurement error. The error term is proportional to the product of RR
and the square of the frequency.
2.7 ANALYZER
To eliminate the effects of a common-mode signal, the
voltages CEv and l3 across theDUT and Rx are amplified
by a differential amplikr and then routed to the A/D
converter through a signal conditioner consisting of amplifiers and a low-pass filter (Figure 2-5). The low-pass
filter attenuates any unwanted frequency components to
prevent possible measurement errors.
The variable-gain amplifiers (AMI’ xl and AMP xS) are
used to increase the resolution of the X-bit A/D con-
verter when the voltage and current are small. The gainphase characteristics are measured at power-on and in
zero-measurement (OPEN and SHORT) modes, and the
compensating factors are applied to subsequent impedance measurements to ensure that amptier characteristics do not affect measurement accuracy.
GND
Figure 2-4. Cumnf-to-Voltage Conv&m
Device under test
Reference resistor
Yp :
OP AMP : Operational amplifier
1 eon, 1 k&2,1 OkQ, 5okQ
Floating admittance
2-5
SECTION2
Principles
of
Operation
Ev
El
Figure 2-S.
e
DiiAMP
*
A?Udyzet
AMP
*
Xl - LPF - S/H - A/D X8
fc = 5ookHz
3okHz
To CPU
16Bii
2-6
SECTION 3
Service Information
3.1 lNTRODUCTlON
This section contains information on fuse replacement,
instrument repair, and replacement parts for the Model
3330.
3.2 FUSE REPLACEMENT
The following paragraphs discuss replacement of the line
fuse and external bias fuse.
WARNING
Disconnect the line cord and all other equip-
ment from the instrument
fuses.
CAUTION
Using the wrong fuse type may result in in-
stnunent damage.
3.2.1
The line fuse, which is located on the
the power line input from excessive current. To replace
the fuse, first unplug the line cord, then pry out the fuse
holder from the bottom of the line power receptacle. Re-
Line Fuse
before replacing
rear
panel, protects
place the fuse only with the type recommended in Table
3-l.
.
Table 3-2
Line
Voltage Descrktion I
lO0V/12UV
22OV/24OV
3.2.2
The external bias fuse protects the instrument from ex-
cessive current supplied by an external DC bias source.
To replace this fuse, simply unscrew the fuse holder, then
replace with the following type: O-IA, WOV, fast blow,
5lnmx2t.lnn-t.
External Bias Fuse
Recommended Line Fuses
1/2A, WOV, slow blow, 5mm x 20mm
I/4A, 25OV, slow blow, 5mm x 2Lhnm
3.3 CALIBRATION
Model 3330 &ration requires a special computer pro-
gram, which is included with a calibration kit along with
complete calibration instructions. Calibration kits are
available free of charge from the factory. Please call
‘I-800-552-1115 to obtain your calibration kit.
3-l
SECTION3
Seroice Information
3.4 FAN FILTER CLEANING
The fan filter should be cleaned at least once every three
months whentheunit is operatedina cleanenvironment,
or at least once a month when the unit is operated in a
dirty environment. The fan filter element should be
cleaned as follows:
1. Turn off instrument power, and disconnect the line
cord.
2.
Pry out the filter cover on the rear panel.
3.
Remove the filter element.
4. Soak the filter element in a solution of mild detergent
and water until clean.
5. Rinse the filter element thoroughly in clean water,
then allow the filter to dry thoroughly before replacement.
6. When the filter has dried completely, install the filter
and cover.
CAUTION
The instrument should not be operated
without the filter in place.
3.5 REPAIR
WARNING
Disconnect the line cord and alI other equipment from the Model 3330 before removing
the covers.
CAUTION
A conductive coating is applied to the inner
surfaces of the covers. Be careful not to
scratch the coating when removing covers.
Also be careful not to peel off the plastic film
on the front panel.
Place the instrument upside down on a soft cloth or
I.
rubber mat to avoid scratching the top cover.
2.
Remove the four screws that secure the bottom
cover, then remove the cover.
Place the
3.
Remove the top cover by separating it from the chas-
4.
Sk
instrument right side up.
3.5.3 Battery Replacement
The battery, which backs up setup and calibration constants RAM, should last for at least three years. If you notice the instrument no longer stores setups, the battery
should be replaced. (A calibration error during the selftest may also indicate a discharged battery.) Follow the
steps below to replace the battery.
3.5.1 Factory Service
.If the Model 3330 is still under warranty, it is recom-
mended that the unit be returned to the factory or a
Keithley authorized repair facility for calibration or repair. When returning the unit for service, include the fol-
lowingz
l
Call the Instruments Division Repair Department at
l-800-552-1115 for a Return Material Authorization
0 number.
l
Write the RMA number and the following on the ship-
ping label: ATTENTION REPAIR DEPARTMENT.
l
Complete the service form at the back of this manual.
l
Advise as to the warranty status of the instrument.
3.5.2
The covers must be removed for repair. Follow the steps
below to remove the covers using Figure 3-l as a guide.
Cover Removal
CAUTION
Many parts on the internal circuit boards are
static sensitive. To avoid possible damage,
perform any repair operations only at a
erly grounded work station, and use only
grounded-tip soldering irons and anti-static
de-soldering tools.
prop-
Replacement of lithium batteries is normally a safe procedure as long as the following safety precautions are followed:
WARNING
The precautions below must be followed to
avoid possible personal injury.
1. Wear safety glasses or goggles when
working with lithium batteries.
2 Do not short the battery terminals to-
gether.
3. Do not incinerate or otherwise expose
lithium batteries to excessive heat
(>6OOC).
3-2
SECTIONS
semice Infornzation
Remove
Screw Screw
t t
1. Remove Screws 2. Remove Bottom Cover
Figure 3-Z.
4. Keep lithium batteries away from all
5. Do not attempt to charge lithium batter-
6. Observe proper polarity when install-
covtT~ovu1
_. --
liquids.
ies.
ing lithium batteries.
NOTE
Calibration constants are stored in battery
backed up RAM. Model 3330 calibration will
be required if the battery becomes fully dis-
charged, or if you remove the battery.
1. Disconnect the line cord and all other instruments
from the
Model 3330.
4
t
t
3. Remove Top Cover
Remove
t t
2. Remove the top and bottom covers.
3. Note the positions of the various cables connected to
the circuit board, then discomwct all cables from the
board.
4. Remove the screws that secure the circuit board to
the chassis.
5. Remove the control board.
6. Unsolder the battery terminals, and remove the battery.
7. Install a new battery, taking care to observe polarity.
8. Install the circuit board, and connect all cables to the
board.
9. Replace the covers.
10. Calibrate the instrument after replacing the battery
(see paragraph 3.3).
33
SECTiON
sf??vice Info?Ynation
3.5.4 Operation Check Procedure
1. Connect the instrument to an appropriate power
source using the supplied power cord.
2. Fress in on the front panel POWER switch to turn on
the power.
3. Verify that the instrument displays the ROM version
number on them DISPLAY area.
4. The instrument will then .perform internal circuit
checks and enter the self-calibration mode. During
self-calibration, XAL” is displayed on them DIS-
PLAY, and a decrementing number is displayed on
them DISPLAY section.
5. The number on the m DISPLAY section decrements; the self-calibratiofi cycle ends when this
number reaches zero.
Table 3-Z Self-calibration Errors
6. If an error occurs, an appropriate message will be
displayed (see Table 3-2). Turn the instrument off for
three seconds, then turn power back on to see if the
error clears. If the error persists and cannot be
cleared, the instrument requires the indicated service.
3.5.5
Table 3-3
lem for the various operation check item problems (see
paragraph 3.5.4). Table 3-4 summ
various measurement signal problems. (See Section 1 for
measurement signal measurements.)
lEFXE22222enor
Calibration error
Front panel keys and/or LEDs do not function
Handler interface does
*If the calibration error persists, the intend battery may r&@re repkement.
not function
Action
Replace RAM, ROM, or circuit board WI?-10420).
Reset error, and proceed with’operation.
Repeat test, calibrate unit if problem persists.*
Replace main board @II?-10420).
Replace front panel circuit board.
Replace handler interface board WI?-21127).
Table 3-4. Measurement Signal Problem Summary
SECTION 3
Senn’ce
Informa fion
Problem
Frequency accuracy
Measurement signal level
Measurement signal distortion
Output impedance accuracy
Internal DC bias accuracy
External DC bias voltage range
3.6 REPLACEABLE PARTS
3.6.1
Table 3-5 summariz
parts, and Figure 3-2 shows the location of mechanical
P*.
Parts List
es available Model 3330 replacement
Action
Replace main board (IQ?-10420).
Perform calibration (replace main
board if calibration is not effective).
Replace main board.
Replace main board.
Replace main board.
Replace main board.
3.6.2
Ordering Parts
To order a part, or to obtain information on replacement
parts, contact your Keithley representative or the factory.
When ordering parts, include the following information:
* The front panel has two code numbers, and it is necessary to specify these two
numbers when the front panel is ordered.
** These two boards combined into one set.
080-33099-00 l**
080-33510-00 1
1**
3-6
SECZ’TON3
Service Information
Figure 3-2.
Model 3330 Exploded View
3-7
APPENDIX A
Model 3330 Specifications
A.1 MEASUREMENT PARAMETERS
Main Parameters (Display A) and Range
‘L: Inductance, 0.ln.H to 19.999kH
C: Capacitance, O.OOlpF to 19999mF
R: Resiitance, O.lmR to 19.999MR
I Zl : Magnitude of impedance, O.lmR to 19.999Mn
AUTO: Automatically selects main parameters, sub-parameters, and
equivalent circuit.
Sub-parameters (Display B) and Range
Q: Quality factor, 0.0001 to 19999
D: Dissipation factor, 0.0001 to 19999
ESR Equivalent series resistance, O.lmR to 19.999MR
C: Parallel conductance, 0.0Oll1S to 19999S
X: Series reactance, O&n?.2 to 19.999MR
8: Phase angle of impedance, -180.00° to +179.99’
V: Voltage monitor (RMS voltage across device) O.OmV to 1999Vrms
I: Current monitor (RMS current through device), O.OOi.tArms to
19.99mArms
Measurement resolution will vary depending on frequency, measurement range, and impedance phase angle.
Automatic Parameter Selection
Phase Display A
+lZO” to +60” L
+30” to -30”
-120” to -60° C
others
R
IZI 0
Display B
Q
Q
D
Autoranging Time: Approximately equal to measurement time
Stabilization Time After Range Change: 0.2 - 4.0s
Stabilization Tie After Frequency Change: 0.15 - 4.0s
Bias Stabilization Tie: (4 + 0.015C)s
where: C = capacitance of DUT (m @)
Equivalent Circuits
AUTO: Automatic selection
SEl? Series
PAR: Parallel
Automatic Equivalent Circuit Selection
Equivalent
Display A
L,C,Ror IZI
LorC(IZI Ilkf2) Q,D,e,VorI
R(620)
IZI Q,D,&VorI series
L,C,Ror IZI G
LorC(IZI >lm) Q,D,e,VorI Parallel
R@<O)
Display B
ESRorX
QD,O,VorI Series
Q,D,e,VorI Parallel
circuit
Series
Series
Parallel
Displayed Resolution
41/2 digits (19999 max counts)
D, Q maximum resolution: 0.0001
0 resolution: 0.01’
V resolution: O.lmV
I resolution:
1pA (when reference resistance is lOOn)
0.1l1A (when reference resistance is 1kR)
O.Ol@ (when reference resistance is 1Okn or 5OkS2)
Deviation Measurement
A: Deviation of main parameter (range of deviation is at least flOO% of
the measurement range)
A% % deviation display of main parameter (display range i199.99%)
Note: Deviation and % deviation of sub-parameters cannot be displayed.
Execution Times
Measurement Tie m-488)
FAST: 65msec (typ)
MFD: 155msec (typ)
SLOW 485msec (typ)
Note: lkS2 impedance, 1kHz frequency and one shot trigger.
Specifications subject to change without notice.
Note: Reference resistance is measurement range dependent.
Accuracy of V, I
Accuracy of V, I: zk(2% + I Z I accuracy)
Accuracy of I Z I and 0 (1 year 18°-280C)”
For 0.2(1. < I Z I < 2OMR and 0.9-l.lV test level, see Table A-l.
For 0.2D i; I Z I 5 2OMn and 50mV test level, see Table A-2.
For I Z I < 0.252 and 1V test level, see Table A-3.
For I Z I >2OM!G? and 1V test level, see Table A-4.
When properly zero corrected and using Model 3323A test fixture.
Table A-l. Impedance Magnitude Accuracy (%I and Phase Accuracy (“1
Test Level= OSl.lVrms, Speed = Med or Slow
Frequency (Hz)
IZI (RI
10Mr IZI c2OM
SMS IZI <lOM
21111-s IZI c5h4
lIvIs IZI <2M
2OOks IZI <lM
2OkS IZI <2OOk
2kS IZI <2Ok
10s IZI <2k
2s IZI <lO
1s IZI c2 052%
05s IZI <I 1.0%
02s IZI <0.5 21%
40.”
90 l30
43%
2.2s” l.!?
2.2% I 13%
13O 0.90”
1.10% 0.75%
0.68” 0.450
034% 036%
033O 02P
037% 025%
0.22O 0.150
t
0.22% 0.15%
0.15” 0.100
0.21% 0.14%
0.13O 0.09”
0.20% 0.13%
0.12” 0.08”
0.37%
O.ZF 0x9
t
0.33O OXP
0.68” 0.45”
13” 0.90”
I
I
I
I
MO-
3.0%
O.zs%
035%
0.70%
1.4%
MO-
900
05% 03%
030°
030% 0.20%
o.ls” 0.100 0.150
020% 0.15%
0.12” 0.09”
~
0.12% 0.10%
0.06” 0.04O 0.08’
lk
I I
o.20° 030”
I I
l.lk-
5.Ok
05%
030%
0.20%
0.12O
0.18%
5.lk 1Ok
3.5%
2o”
1.8%
l.1°
0.9%
0.60”
0.40%
o.20°
0.27%
0.16”
023%
0.15”
0.15%
0.08”
0.13%
0.10”
0.32%
o.20°
O.sO%
0.34Y
0.80%
050”
1.2%
0.80”
1.0% 3.5%
0.60” 200 3.0”
O.so%
0300
03.5%
o.20° 0.60”
t
0.70% 1.0% 20%
OAOO 0.60”
1.2% 1.7% 3.3%
0.70” 1.0” 20”
1.6% 3.0%
1.00
1.0% 20%
5.0%
20”
12O
CL0
Notes:
1. For ST-lST, or 28”C-40°C, multiply the I Z I accuracy by 1.4, and the phase accuracy by 1.8.
2 When measurement speed is FAST, multiply the accuracies by 20.
3. For test levels other than 0.9-l.lVrms or 5OmVrm.s see Accuracy Notes.
Table A-2. Impedance Magnitude Accuracy (%I and Phase Accuracy lo)
Level = 5OmVims, Speed = Med
or
Slow
2Ms IZI <5M 3.0% 20%
1MS IZI <ZM 1.5%
ZOOkS IZI <lM 0.75%
2Okr IZI <200k 0.45% 030% 0.20% 0.16%
2kS IZI <2Ok 03%
105 IZI c2k
2s IZI <lO 0.75%
1s IZI <2 1.5%
0.5s IZI <I 27% 1.8%
0.2s IZI co.5 5.55% 3.7% 26% 20%
Notes:
1. For 5”C-18T, or W’C-40°C, multiply the I Z I by 20, and the ph!se accuracy by 20.
2 When measurement speed is fast, multiply the accuracies by 20.
3. Accuracy is not guaranteed in the following ranges: I Z I z= 2OMQ I Z I c 0.252
4. For test ieveis other than O-9-LlVrms or 5OmVnns see Accuracy Notes.
1.80
0.90”
0.45-J
OCP
0.23O 0.156 0.w 0.06”
030% 0.20%
0.18” 0.12O
0.45” 03 o.20°
0.90
1.650 1.10
3.30
1.2O 0.80°
1.0% 0.60%
0.60”
050%
0300 0.25”
O.lV 0.12O
025% 0.18% 0.16%
050%
1.0%
0.600 0.400 o.30°
22” 15” 1-Y
12%
035” 0.w
0.40% 030%
0.18%
0.09”
035%
0.60%
1.2%
o.70°
0.90% 1.2%
0.60°
0.40%
0.18“
0.08” 0.14”
0.15% 020% 0.23%
0.06”
025% 035%
0.140 o.20° 030°
050%
1.0%
0.60° o.70° 0.90” l.1° 6.0”
0.8”
0.60% 0.80%
035O 0.50”
035% 0.40%
0.20” 0.2Y o.40°
024% 0.32%
0.20% 0.24% 0.35% 1.4% 20%
0.12O 0.14”
0.12O 0.13”
050% 0.70%
0.60% 0.80%
o.40°
l.2% 15%
26% 29% 3.4% 21%
1Y 1.7O
1.6% 3.5%
l.o”
0.18O OLD
050”
2o”
1.6%
0.90” 7.0°
0.70% 6.0%
0.40%
OXP om
0.32%
0.18”
0.40”
1.1%
0.70” 3.6” 5.0”
1.8%
20”
25% 30%
150 18”
12%
3.6” 4.0”
1.8%
1.00 Iso
1.2%
0.70” 1.0”
3.4%
20” 23”
6.0% 8.0%
10% 14%
13O 16”
14%
8.0°
7.0%
3.0%
1.2O
1.6%
4.0%
8.5”
28%
Table A-3. Accuracy of I Z I and 0 for I Z I cO.2Q
I Z I Accuracy: z!z(% reading + R) shown.
8 Accuracy: (0 Accuracy for 0.X I Z I co.5 in Table A-l) x (0.2Q/ I Z I )
When SPEED=FAST, multiply accuracy by 2
For 5”-18°C or W-40°C, multiply accuracy by 2
Table A-4. Accuracy of I Z I and 0 for I Z I 220MQ
I Z I Accuracy: Specified by the + deviation (S) of admittance I Y I shown.
6 Accuracy: (e Accuracy for 1Om I Z I <2OM in Table A-l x ( I Z I /2OMQ).
When SPEXD=FAST, multiply accuracy by 2
For 5”-18°C or 28”-4O”C, multiply accuracy by 2
Accuracy Notes
1. When a measurement is made
interaction with line frequency.
2
Tables A-l through A-4show the worst case value in each impedance range. A more precise value for accuracy may be obtained by interpolation.
3.
Inordertodetenninetheimpedancemagnitudeaccuracy(A,)andimpedancephaseaccuracy(Ad) atmeasurementsignallwels (LV) other than5OmV
or 0.9V - l.lV, use one of the following equations:
at line frequency or at twice line frequency, the measured value may deviate beyond the accuracy range due to
. In this case, use 5OI-h or 1OOHz for a 6OHz line and 6OHz or 12OHz for a 5OHz line.
Measurement
Signal Level
0
From To
1OmV 49mV QOMnand ?0.2Q
51mV 899mV
51mV 899mV QOMQand rO.2Q
5lmV 899mV
where:
LV = Test level voltage
= Impedance Magnitude Accuracy (%) from Table A-l
An
A, = Impedance Phase Accuracy (O) from Table A-l
= Impedance Magnitude Accuracy (%) from Table A-2
42
A, = Impedance Phase Accuracy (“) from Table A-2
& = Impedance Magnitude Accuracy (%) from Table A-3
B, = Impedance Magnitude offset @IQ) from Table A-3
A, = Impedance Magnitude Accuracy (96) from Table A-4
A, = Impedance Phase Accuracy (“) from Table A-4
AZ5 = Impedance Magnitude Accuracy for 51mV S LV S 899mV and I Z I c 0.2Q
Measured
Impedance
Magnitude
IZI
22OMQ
corn
Impedance
Magnitude
Accuracy [%I
(4)
Impedance
Phase
Accuracy I”1
(4)
A,(%)
2k !5k
i .;.
; .’
-:.
,’
:*.
, .
: I.,‘! -
\
I
‘. : ,*
r,
s’ i
** :I
;<‘:
:.
*’
;. :
: ,, : *, j
*.* ,:*
I illllil,
‘. ,‘f
a’.
‘.
‘..,’ i _
; *._
it’ =
,*.
i _
‘\ i
‘.i, - \q
: .
: j.
;,* 2 z
,‘i _
,?. i _
‘-4
; j‘,
10k 2Ok !SOk 1OOk
+
.
inductance L
Impedance t
Frequency f ‘(Hz)
Notes: Use this chart to determine the impedance magnitude of an
inductor or capacitor at a partia~lar frequency. For example,
a 1 H inductor at 1 OkHz and a 1 pF capacitor at 1 kHz are shown
on the diagram.
lH@lOkHz=63kQ
1pF@lkHz=16O~
Figure A-l. Convmion Diagram
Examples of Determining Accuracy
Example 1: Component = 33m resistor
Test Frequency = 1OkHz
Test Level = 1V rms
Temperature = 18’XWC
Speed = Med or Slow
1. Find the accuracy values corresponding to 33m and 1OkHz on Table
A-l. Record the impedance magnitude accuracy (0.25%) and impedance phase accuracy (0.15”).
2 If the ambient temperature is 5°C - 18OC or 28°C - 4O”C, multiply the
impedance magnitude accuracy by 1.4 and the impedance phase
accuracy by 1.8.
3. If measurement speed is set to FAST, multiply the impedance magnitude accuracy by 20 and the impedance phase accuracy by 20.
4. Resistance accuracy is approximately equal to the impedance magni-
tude accuracy if Q s 0.1.
5. If Q > 0.1, see example 4.
Example 2: Component = 1OpF capacitor
Test Frequency = 1kHz
Test Level = 5OmV
Temperature = 18”-WC
Speed = Med or Slow
1. Determine the impedance of the lOt.tF capacitor at 1kHz by referring to
Figure A-l or by solving the following equation:
1
2Rx1kHzx10pF
2 Find the accuracy values corresponding to 16R at 1kHz on Table A-2
Record the impedance magnitude accuracy (0.15%) and impedance
phase accuracy (0.060).
3. If the ambient temperature is 5OC - 18°C or WC - 40°C, multiply the
impedance magnitude accuracy by 1.4 and the impedance phase
accuracy by 1.8.
4. If measurement speed is set to FAST, multiply the impedance magnitude accuracy by 20 and the impedance phase accuracy by 20.
5. If D s 0.1, the accuracy of the capacitance measurement accuracy (CJ
is related to the impedance magnitude accuracy (ZJ by the followmg
equation:
= 16R
1. Determine the impedance magnitude accuracy of the 68OuH inductor
at 1OOkHz by referring to Figure A-l or by solving the following
equation:
1. Record the impedance magnitude accuracy
phase accuracy (0.5’).
3. If the ambient temperature is 5°C - 18°C or 28°C - 40°C, multiply the
impedance magnitude accuracy by 1.4 and the impedance phase
accuracy by 1.8.
4. If measurement speed is set to FAST, multiply the impedance magnitude accuracy by 20 and the impedance phase accuracy by 20.
5. If Q > 10 the inductance measurement accuracy is approximately equal
to the impedance magnitude accuracy.
6. If Q < 10, see example 4.
Example 4: Determine precision of parameters other than I Z I and 8 at
any frequency.
1. Fit,
measure I Z
parameters by applying the following equations:
%WM
IZl-
where:
f = frequency (Hz).
C, L,r = series equivalent circuit variables.
Cr, Lp = parallel equivalent circuit variables.
2 Determine the impedance magnitude accuracy (A,) and impedance
phase accuracy (AJ of
table (Table A-l, A-2, A-3 or A-4).
,3. Determine the maximum and minimum value by using the following
equations:
Z-= IZI-x(l+Ar)
z,, = I z
8
e
=arctanQ
=
= i/(2dcs
=27tfr+ine
= sin 0/(2rfCJ
mm=%las+Ae
=emols-Ao
mh
I and 8. Or, calculate them from other measured
Q =1/D
2dr.,+n e
I
lllpu x (I- 4)
sin e)
I ZmLU
= 2xfLJESR
= 1 /(2dCs ESR)
= (2xfC,)/G
= 1/(2~fL,G)
I
and Bmur by referring to the appropriate
(0.70/q)
and impedance
c,r 3%.
l-Zxc
In this example Z- = 0.1% and C, = 0.1001%.
6. If D > 0.1, see example 4.
Example 3: Component = 68OpH
Test Frequency = 1OOkHz
Test Level = 1V rms
Temperature = 18”~WC
Speed = Med or Slow
4. Determine the maximum and minimum value of the parameter of
interest by substituting the values found in step 3 into one of the
following equations. There will be four combinations:
up =
R, =
izic0se
ESR =
IZI case
= izi
sine
; =X/2ltf
= -l/lxfx
cs
Q
=itanei
5. Accuracy is found by determining the largest deviation from the
measured values.
Line Voltage: 100,120,220 or 240510% VAC (external switch selectable)
Bnvimnmenb Operating: 0”-4O”C, lo-90% RI-I (non-condensing)
Storage: -loo-50°C, lo-80% RH (non-condensing)
Dimensions, Weight: 132.5mm high x 216mm wide x 350mm deep (5 ‘/,
in. x 8 Yr in. x 13 ‘/, in.) Net weigth 3.7kg (8.1 Ibs.) (instrument only,
exduding accessories).
Warm-up: 30 minutes.
Front Panel Connectors: 4 BNC connectors and a five way biding post.
Rear Panel Connectors:
Handler Interface
External Bias: BNC
IEEE Connector: Floating
Display: Two 4 ‘/2 digit displays for main and sub-parameters.
Trigger Mode: Automatic (continuous) and manual.
Trigger Delay Time: 0-199.99s
Calibration Cycle: 1 year
lOhmz-
1MQ -z-
looks2 z-
lOks2 :-
lkf27
loon z-
loR?-
8.
c’
(.
*.c’
Y
\ .
‘\
,’
’ ‘.
I’
‘\
‘.
,
,’
‘\
,’
\
,
,’
‘.
,’
.
1R -y
Impedance Z
,
#’
:<
--.
Frequency f (Hz)
Note : 1. For 5%18%, or 28%40%, muifipiy the IZl accuracy by
1.4,andthephaseaccuracyby1.8.
2. When measurement speed is FAST, double the accuracy.
Level 3 0.9%1 .lV rms
Speed E Medium or Slow
lOhK? :-
lMQ~-
loom p-
lOks2 7’
IkQ:-
loof2~-
1on 2-
ia?-
capadtaflce c ’
ImpedanceZ
I ,,,1111, 1 ,I,““,
40
100 200 500 lk 2k
Frequency f (Hz)
Note : 1. For 5%-l 8%, or 28%40°C. multiply the pi accuracy by
2.0,
and the phase accuracy by 2.0.
2. When measurement speed is FAST, double the accuracy.
3.
Accuraoy is not guaranteed in the following ranges : IZl>2OMQ, IZ]c.2Q.
Level = 50mV rms
I I 8 , I II,,
5k 10k 20k
Speed 3~ Medium or slow
. ,
, I I,““,
50k 1OOk
hlduotance L
Index
Analyzer,Z-5 *
B
Battery Replacement, 3-2
Block Diagram, 2-l
C
Cal&ration, 3-l
Capacitance Reading Checks, l-11
Cover Removal 3-2
Current and Voltage l?e&ction, 2-1
Current-to-Voltage Converter, 2-5