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Model 3321 LCZ Meter
Operator's Manual
A GREATER MEASURE OF CONFIDENCE
WARRANTY
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 normal wear or failure to follow instructions.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING ANY
IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. THE REMEDIES PRO-
VIDED 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
INSTRUMENTS AND SOFTWARE EVEN IF KEITHLEY INSTRUMENTS, INC., HAS BEEN ADVISED IN ADVANCE
OF THE POSSIBILITY OF SUCH DAMAGES. SUCH EXCLUDED DAMAGES SHALL INCLUDE, BUT ARE NOT LIM-
ITED 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 Road l Cleveland, OH 44139 l 440-248-0400 l Fax: 440-248-6168 l http://www.keithley.com
BELGIUM: Keithley Instruments B.V. Bergenseateenweg709 s B-1600 Sint-Pieters-Leeuw 02/363 00 40 Fax: 02/363 00 6d
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CHlNA: Keithley Instruments China Yoan Chen Xin Building, Roam 705 12Yumio Road, Dewai, Madian Beijing loo029 8610-62022886 Fax: 861@62022892
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SWITZERLAND: Keithky Instruments SA Kriesbachstrasse 4 8600 Diibendorf* 01-82194 44 Fax: 01-820 30 81
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TAIWAN: Keithley Instruments Taiwan I Fl. 89 PO Ai Street l Hsinchu, Taiwan, R.O.C. -886-3572-9077 . Fax: 886-3572-903 10/99
Model 3321 LCZ Meter
Operator's Manual
01991, Keithley Instruments, Inc.
All rights reserved.
Cleveland, Ohio, U.S.A.
Second Printing, April 2000
Document Number: 3321-900-01 Rev. B
Manual Print History
The print history shown below lists the printing dates of all Revisions and Addenda created for this manual. The Revi-
sion Level letter increases alphabetically as the manual undergoes subsequent updates. Addenda, which are released
between Revisions, contain important change information that the user should incorporate immediately into the manual.
Addenda are numbered sequentially. When a new Revision is created, all Addenda associated with the previous Revision
of the manual are incorporated into the new Revision of the manual. Each new Revision includes a revised copy of this
print history page.
Revision A (Document Number 3321-900-01) ................................................. March 199 1
Addendum A (Document Number 3321-900-02). ................................................ May 1993
Addendum A (Document Number 3321-900-03). ....................................... December 1995
Revision B (Document Number 3321-900-01) ................................................... April 2000
All 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 Operators of this product must be protected from electric shock at
this product and any associated instrumentation. Although some in- all times. The responsible body must ensure that operators are pre-
struments and accessories would normally be used with non-haz- vented access and/or insulated from every connection point. In
ardous voltages, there are situations where hazardous conditions some cases, connections must be exposed to potential human con-
may be present. tact. Product operators in these circumstances must be trained to
This product is intended for use by qualified personnel who recog- protect themselves from the risk of electric shock. If the circuit is
nize shock hazards and are familiar with the safety precautions re- capable of operating at or above 1000 volts, no conductive part of
quired to avoid possible injury. Read and follow all installation, the circuit may be exposed.
operation, and maintenance information carefully before using the Do not connect switching cards directly to unlimited power circuits.
product. Refer to the manual for complete product specifications. They are intended to be used with impedance limited sources.
If the product is used in a manner not specified, the protection pro- NEVER connect switching cards directly to AC mains. When con-
vided by the product may be impaired. necting sources to switching cards, install protective devices to lim-
it fault current and voltage to the card.
The types of product users are:
Before operating an instrument, make sure the line cord is connect-
Responsible body is the individual or group responsible for the use
ed to a properly grounded power receptacle. Inspect the connecting
and maintenance of equipment, for ensuring that the equipment is
cables, test leads, and jumpers for possible wear, cracks, or breaks
operated within its specifications and operating limits, and for en-
before each use.
suring that operators are adequately trained.
When installing equipment where access to the main power cord is
Operators use the product for its intended function. They must be
restricted, such as rack mounting, a separate main input power dis-
trained in electrical safety procedures and proper use of the instru-
connect device must be provided, in close proximity to the equip-
ment. They must be protected from electric shock and contact with
ment and within easy reach of the operator.
hazardous live circuits.
For maximum safety, do not touch the product, test cables, or any
Maintenance personnel perform routine procedures on the product
other instruments while power is applied to the circuit under test.
to keep it operating properly, for example, setting the line voltage
ALWAYS remove power from the entire test system and discharge
or replacing consumable materials. Maintenance procedures are de-
any capacitors before: connecting or disconnecting cables or jump-
scribed in the manual. The procedures explicitly state if the operator
ers, installing or removing switching cards, or making internal
may perform them. Otherwise, they should be performed only by
changes, such as installing or removing jumpers.
service personnel.
Service personnel are trained to work on live circuits, and perform Do not touch any object that could provide a current path to the com-
safe installations and repairs of products. Only properly trained ser- mon side of the circuit under test or power line (earth) ground. Always
vice personnel may perform installation and service procedures. make measurements with dry hands while standing on a dry, insulated
surface capable of withstanding the voltage being measured.
Keithley products are designed for use with electrical signals that
are rated Installation Category I and Installation Category II, as de- The instrument and accessories must be used in accordance with its
scribed in the International Electrotechnical Commission (IEC) specifications and operating instructions or the safety of the equip-
Standard IEC 60664. Most measurement, control, and data I/O sig- ment may be impaired.
nals are Installation Category I and must not be directly connected Do not exceed the maximum signal levels of the instruments and ac-
to mains voltage or to voltage sources with high transient over-volt- cessories, as defined in the specifications and operating informa-
ages. Installation Category II connections require protection for tion, and as shown on the instrument or test fixture panels, or
high transient over-voltages often associated with local AC mains switching card.
connections. Assume all measurement, control, and data I/O con-
When fuses are used in a product, replace with same type and rating
nections are for connection to Category I sources unless otherwise
for continued protection against fire hazard.
marked or described in the Manual.
Chassis connections must only be used as shield connections for
Exercise extreme caution when a shock hazard is present. Lethal
measuring circuits, NOT as safety earth ground connections.
voltage may be present on cable connector jacks or test fixtures. The
American National Standards Institute (ANSI) states that a shock If you are using a test fixture, keep the lid closed while power is ap-
hazard exists when voltage levels greater than 30V RMS, 42.4V plied to the device under test. Safe operation requires the use of a
peak, or 60VDC are present. A good safety practice is to expect lid interlock.
that hazardous voltage is present in any unknown circuit before
measuring. 2/02
If a screw is present, connect it to safety earth ground using the To maintain protection from electric shock and fire, replacement
wire recommended in the user documentation. components in mains circuits, including the power transformer, test
leads, and input jacks, must be purchased from Keithley Instru-
The ! symbol on an instrument indicates that the user should re- ments. Standard fuses, with applicable national safety approvals,
fer to the operating instructions located in the manual. 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
The symbol on an instrument shows that it can source or mea- long as they are equivalent to the original component. (Note that se-
sure 1000 volts or more, including the combined effect of normal lected parts should be purchased only through Keithley Instruments
and common mode voltages. Use standard safety precautions to to maintain accuracy and functionality of the product.) If you are
avoid personal contact with these voltages. unsure about the applicability of a replacement component, call a
The WARNING heading in a manual explains dangers that might Keithley Instruments office for information.
result in personal injury or death. Always read the associated infor- To clean an instrument, use a damp cloth or mild, water based
mation very carefully before performing the indicated procedure. cleaner. Clean the exterior of the instrument only. Do not apply
The CAUTION heading in a manual explains hazards that could cleaner directly to the instrument or allow liquids to enter or spill
damage the instrument. Such damage may invalidate the warranty. on the instrument. Products that consist of a circuit board with no
case or chassis (e.g., data acquisition board for installation into a
Instrumentation and accessories shall not be connected to humans. computer) should never require cleaning if handled according to in-
Before performing any maintenance, disconnect the line cord and structions. If the board becomes contaminated and operation is af-
all test cables. fected, the board should be returned to the factory for proper
cleaning/servicing.
+
Safety Precautions
The following safety precautions should be observed before using the Model 3321 LCZ Meter and any associated instru-
ments.
This instrument is intended for use by qualified personnel who recognize shock hazards and are familiar with the safety
precautions required to avoid possible injury. Read over this manual carefully before using the instrument.
Exercise extreme caution when a shock hazard is present at the test circuit. The American National Standards Institute
(ANSI) states that a shock hazard exists when voltage levels greater than 30V rms or 42.4V peak are present. A good
safety practice is to expect that hazardous voltage is present in any unknown circuit before measuring.
Inspect the connecting cables and test leads for possible wear, cracks, or breaks before each use.
For maximum safety, do not touch the test cables or any instruments while power is applied to the circuit under test.
Turn off the power and discharge any capacitors before connecting or disconnecting cables from the instrument.
Do not touch any object which 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 with-
standing the voltage being measured.
Instrumentation and accessories should not be connected to humans.
+
Table of Contents
General Information
INTRODUCTION.. ............................................................................................................................................. I- 1
PRODUCT DESCRIPTION ............................................................................................................................... I- 1
Condensed Specifications ........................................................................................................................... l- 1
Features ....................................................................................................................................................... I- 1
WARRANTY INFORMATION.. ....................................................................................................................... l-2
MANUAL ADDENDA ...................................................................................................................................... l-2
SAFETY SYMBOLS and TERMS.. ................................................................................................................... 1-2
INSPECTION ..................................................................................................................................................... l-2
OPTIONAL ACCESSORIES ............................................................................................................................. l-2
SPECIFICATIONS ............................................................................................................................................. l-2
2 Getting Started
INTRODUCTION.. ............................................................................................................................................. 2- 1
POWER-UP ........................................................................................................................................................ 2- 1
BASIC MEASUREMENTS ............................................................................................................................... 2-2
Operation
INTRODUCTION.. ............................................................................................................................................. 3- 1
FRONT AND REAR PANEL FAMILIARIZATION.. ...................................................................................... 3- 1
Front Panel .................................................................................................................................................. 3-2
Rear Panel ................................................................................................................................................... 3-6
POWER-UP PROCEDURE ............................................................................................................................... 3-7
Line Voltage Setting ................................................................................................................................... 3-7
Fuse Replacement ....................................................................................................................................... 3-8
Power Cord ................................................................................................................................................. 3-8
Power up Sequence ..................................................................................................................................... 3-8
Default Conditions ...................................................................................................................................... 3-9
TEST CONNECTIONS ...................................................................................................................................... 3-9
BASIC MEASUREMENTS ............................................................................................................................. 3- 10
Measurement Function Selection.. ............................................................................................................ 3- 10
Measurement Function Parameter Selection.. ........................................................................................... 3- 11
Equivalent Circuit Selection ..................................................................................................................... 3- 1 1
Measurement Range Selection.. ................................................................................................................ 3- 12
FREQUENCY SELECTION.. .......................................................................................................................... 3- 1.5
SIGNAL LEVEL SELECTION.. ...................................................................................................................... 3- 1.5
DC BIAS.. ......................................................................................................................................................... 3-15
ZERO CORRECTION ...................................................................................................................................... 3-16
Zero Correction Procedures ....................................................................................................................... 3-16
Equivalent Circuits of Measurement System ............................................................................................ 3-17
Correctable Range ..................................................................................................................................... 3- 17
MEASUREMENT CABLES ............................................................................................................................ 3- 17
Cable Requirements ................................................................................................................................... 3-17
Additional Error ......................................................................................................................................... 3-20
-
ERROR MESSAGES ......................................................................................................................................... 3-20
GPIB Address and Delimiter .... ......................................................................................................................... 3-21
4 GPIB Interface
INTRODUCTION ............................................................................................................................................... 4-l
Ma.jor GPIB Specifications.. ........................................................................................................................ 4- 1
Bus Line Signals and Operations ................................................................................................................ 4-2
GPIB Handshaking ...................................................................................................................................... 4-2
Data Transfer Example ................................................................................................................................ 4-3
Basic Talker Functions ................................................................................................................................ 4-3
Basic Listener Functions ............................................................................................................................. 4-3
Major Specifications of Controller Functions ............................................................................................. 4-4
Multi-line Interface Message.. ..................................................................................................................... 4-4
GPIB Programming Example.. ............................................................................................................................ 4-6
GFIB SPECIFICATIONS ................................................................................................................................... 4-6
Interface Functions ...................................................................................................................................... 4-6
Bus Drivers.. ................................................................................................................................................ 4-6
Address ........................................................................................................................................................ 4-6
Receive and Transmit Codes ....................................................................................................................... 4-7
Delimiters .................................................................................................................................................... 4-7
Program Codes ............................................................................................................................................ 4-7
Response to Interface Messages.. .............................................................................................................. 4-10
Remote/Local Operation ........................................................................................................................... 4-10
Service Request (SRQ) .............................................................................................................................. 4-11
Status Byte.. ............................................................................................................................................... 4- 1 1
Process Time ............................................................................................................................................. 4-12
SETTING GPIB ADDRESS AND DELIMITER ............................................................................................. 4-12
GPIB PROGRAMMING ................................................................................................................................... 4-12
Setting Messages ....................................................................................................................................... 4- 13
Inquiry Messages ....................................................................................................................................... 4-13
Reading Measured Data ............................................................................................................................ 4-17
MEASUREMENTS OVER GPIB .................................................................................................................... 4-18
Preparation ................................................................................................................................................. 4-18
Measurement and Reading of Data .......................................................................... ................................. 4-l 8
GPIB OPERATING CONSIDERATIONS.. ................................................................ ,.................................... 4- 19
GPIB ERRORS ................................................................................................................................................. 4-19
EXAMPLE PROGRAMS ........................................................................ ......................................................... 4-20
GPlB Initialization ..................................................................................................................................... 4-20
Display Setting .......................................................................................................................................... 4-20
Inquiry ....................................................................................................................................................... 4-20
SRQ and Serial Poll ...................... ............................................................................................................. 4-21
Measurements ............................................................................................................................................ 4-21
ii
list of Illustrations
2 Getting Started
Figure 2- 1 Model 3321 Test Fixture Connection . ... ... . .. .... . . .. . ... ... .. . .. ... .. .. .. ... .. . ...`........................................................ 2-3
3 Operation
Figure 3- 1 Model 3321 Front Panel .............................................................................................................................. 3-2
Figure 3-2 Model 3321 Rear Panel.. ............................................................................................................................. 3-6
Figure 3-3 Cleaning Air Filter.. .................................................................................................................................... 3-7
Figure 3-4 Fuse Replacement ....................................................................................................................................... _
3-8
Figure 3-5 Connection to the Device Under Test ....................................................................................................... 3- 10
Figure 3-6 Equivalent Circuits of Device Under Test ................................................................................................ 3-11
Figure 3-7 OPEN Measurement ................................................................................................................................. 3-16
Figure 3-8 SHORT Measurement ............................................................................................................................... 3-17
Figure 3-9 Equivalent Circuits of Measurement System ............................................................................................ 3-18
Figure 3-10 Test Cables.. .............................................................................................................................................. 3-19
4 GPIB Interface
Figure 4- 1 Interface Connector ..................................................................................................................................... 4-2
Figure 4-2 Handshake Timing Diagram ....................................................................................................................... 4-3
Figure 4-3 Data Transfer Example ............................................................................................................................... 4-4
Figure 4-4 Basic Syntax Program Code ....................................................................................................................... 4-7
.
111
list of Tables
3 Operation
Table 3-l Power-up Defaults.. ..................................................................................................................................... 3-9
Table 3-2 AUTO Function Selections ....................................................................................................................... 3-10
Table 3-3 AUTO Equivalent Circuit Selections.. ...................................................................................................... 3-l 2
Table 3-4 Impedance Ranges .................................................................................................................................... 3-14
Table 3-5 Additional Error of I Z I Caused by Test Cables (Reference Data) ........................................................... 3-20
Table 3-6 Error Message ........................................................................................................................................... 3-2 1
4 GPIB Interface
Table 4- 1 Multi-Line Interface Message.. ................................................................................................................... 4-5
Table 4-2 Interface Functions.. .................................................................................................................................... 4-6
Table 4-3 Bus Drivers ................................................................................................................................................. 4-6
Table 4-4 List of Program Codes ................................................................................................................................ 4-9
Table 4-5 Response to Interface Messages ................................................................................................................ 4-10
Table 4-6 Status Bytes ............................................................................................................................................... 4-11
Table 4-7 Process Time of Program Codes (Reference Data) ........................................ .......................................... 4-12
Table 4-8 Setting Messages.. ..................................................................................................................................... 4- I4
Table 4-9 Inquiry Messages ...................... ................................................................................................................ 4-15
Table 4- 10 GPIB Error Messages ................................................................................................................................ 4- 19
SECTION 1
General Information
1 .l INTRODUCTION Measurement Ranges (Display):
IZI O.lmQ to 19.999Ma
This section contains general information about the C O.OOlpF to 199.99mF
Model 3321. O.lnH to 19.999kH
b, D 0.0001 to 19999
8 -180.00" to +179.99"
1.2 PRODUCT DESCRIPTION
Measurement Frequency: 120Hz, lkHz, 1OkHz or
1ookHz.
The Model 3321 LCZ Meter is a high accuracy (0.1%
basic accuracy), full function LCZ meter. It includes an Measurement Signal Level: 1V rms, 50mV rms
IEEE-488 interface to control operation from a computer.
Equivalent Circuit: Series, parallel and automatic
DC Bias:
The Model 3321 drives a device under test (DUT) with a
DC Bias: Internal: 2V
known voltage sine wave signal. Impedance is derived
External: 0 to *35V
by precisely measuring the resultant current that flows
through the DUT. Zero Correction: Automatic (OPEN, SHORT).
Measuring Time: FAST (64ms), MED (150ms), SLOW
(480ms).
1.2.1 Condensed Specifications
The following condensed specifications help summarize
1.2.2 Features
the capabilities of the Model 3321. Complete, detailed
instrument specifications are located in Appendix A.
l High Accuracy - Basic accuracy of 0.1% with dis-
play resolution of 0.0001 at 4-l /2 digits.
l Wide Frequency Range - Four frequency selections
Measurement Functions: L, C, I Z I, Q, D, ESR, G, 8.
in the range from 120Hz to 1OOkHz.
These functions can be automatically selected.
l Two Measurement Signal Levels - Selectable sine
wave signals of 50mV rms or 1V rms can be applied
Basic Accuracy: 0.1% (at 1kHz)
l-l
SECTION 1
General Infbvmation
to the DUT. Also, the signal can be biased by select- The CAUTION heading used in this manual explains
ing the 2V internal DC bias or by externally applying hazards that could damage the scanner card. Such dam-
a DC bias up to i35V. age may invalidate the warranty.
Variety of Measurement Functions - In addition to
the conventional functions including L, C, D and Q,
you can also display the equivalent series resistance 1.6 INSPECTION
(ESR), parallel conductance (G), and polar coordi-
nates expression ( I Z I - 0). The Model 3321 was carefully inspected, both electri-
Automatic Function and Range Selection - In addi- cally and mechanically, before shipment. After unpack-
tion to the conventional autorange feature, function ing all items from the shipping carton, check for any
and the equivalent circuits can also be automatically obvious signs of physical damage that may have
selected. occurred during transit.
Built-in DC Bias Power Supply - The built-in
Report any damage to the shipping agent immediately.
2V DC bias power supply is used to measure the
Save the original packing carton for possible future
capacitance of polarized devices such as electrolytic
capacitors and semiconductors. reshipment. The following items are included with
every Model 3321 order:
IEEE-488 Interface - Allows the instrument to be
controlled by a computer. l Model 3321 LCZ Meter
l Model 3321 Instruction Manual
l Additional Accessories as ordered.
1.3 WARRANTY INFORMATION If an additional instruction manual is required, order
the manual package, Keithley part number 3321-901-00.
Warranty information is located on the inside front The manual package includes an instruction manual
cover of this instruction manual. Should your Model and any pertinent addenda.
3321 require warranty service, contact the Keithley rep-
resentative or authorized repair facility in your area for
further information. When returning the instrument for
1.7 OPTIONAL ACCESSORIES
repair, be sure to fill out and include the service form at
the back of this manual in order to provide the repair
The following accessories are available from Keithley
facility with the necessary information.
for use with the Model 3321:
1. Model 3323 Direct Test Fixture. Allows leaded parts
1.4 MANUAL ADDENDA to be directly inserted into this test fixture.
2. Model 3324 4-Terminal Alligator Clip Test Lead.
Any improvements or changes concerning the instru- Designed for four-terminal components, in which
ment or manual will be explained in an addendum the current-supplying terminals and voltage-
included with the manual. Be sure to note these changes measurement terminals are separated.
and incorporate them into the manual. 3. Model 3325 Kelvin Clip Test Lead. Uses two clips for
four-terminal connections. Used to measure large or
irregularly-shaped components which cannot be
1.5 SAFETY SYMBOLS and TERMS inserted into the Model 3323 test fixture.
4. Model 3326 Chip Component Test Leads. This
The following symbols and terms may be found on an tweezer-type test lead set permits easy connection to
instrument or used in this manual. surface mounted chip components.
The symbol n ! on an instrument indicates that the The cables for all the above test leads are shielded to
user should refer to the operating instructions located in minimize stray capacitance.
the instruction manual.
The WARNING heading used in this manual explains 1.8 SPECIFICATIONS
dangers that might result in personal injury or death.
Always read the associated information very carefully Model 3321 specifications may be found in Appendix A
before performing the indicated procedure. of this manual.
l-2
SECTION 2
Getting Started
2.1 INTRODUCTION CAUTION
To prevent damage to the instrument that
may not be covered by the warranty, make
This brief section will guide the user through front panel sure the rear panel LINE SUPPLY switch is
operation. This section is intended to acquaint the user set to the correct line voltage setting.
with basic operation. Detailed operation is covered in
Section 3.
2. The power cord is supplied with the instrument.
Connect the female end of the power cord to AC re-
ceptacle on the rear panel, and connect the other
NOTE
end to a grounded AC outlet.
Front and rear panel views of the instrument
(which may be helpful in locating controls, an-
nunciators or connectors) are provided by
Figures 3-l and 3-2. These drawings are lo- WARNING
cated in Section 3. The instrument is equipped with a 3-wire
power cord that contains a separate ground
wire and is designed to be used with
grounded outlets. When proper connections
2.2 POWER-UP are made, instrument chassis is connected to
the power line ground. If the AC outlet is not
grounded, the rear panel safety earth ground
The instrument is designed to operate from 90-132V or terminal must be connected to a known
198-250V line voltage ranges at 48 to 62Hz. Perform the safety earth ground using #18 AWG (or
following steps to connect the instrument to line power: larger) wire.
1. Check the rear panel LINE SUPPLY selector switch
and make sure the setting agrees with the line volt- 3. Turn on the instrument by depressing the POWER
age available in your area. If the switch setting needs switch in to the ON position. The instrument will
to be changed, perform the procedures in paragraph perform its power up sequence (see paragraph
3.3. Keep in mind that changing the line voltage set- 3.3.4). After successfully completing the power up
ting requires a fuse change. tests, the instrument will assume default conditions
2-1
+
SECTION 2 +
Gettim Started
that configure the instrument for immediate meas- 3. Install the DUT (device under test) into the test fix-
urements. ture. The appropriate function for the DUT will be
selected and the measurements will be displayed as
follows:
NOTE
The instrument is ready for immediate use.
However, to achieve rated accuracy, the in- NOTE
strument must be allowed to warm up for at The exponent symbol annunciators (p, n, u, m,
least l/2 hour. k and M) for the readings are located to the
right of each display.
2.3 BASIC MEASUREMENTS
A. For inductors (L), the m DISPLAY provides
A measurement is performed by applying a known rms
the reading in henries (H), and them DISPLAY
signal level at a specific frequency to the DUT and then
provides the quality factor (Q).
calculating and displaying the results.
B. For capacitors (C), the m DISPLAY provides
the reading in farads (F), and them DISPLAY
provides the dissi ation factor (D).
NOTE
C. For resistors, the i!!b DISPLAY provides the Z
A
The following procedure assumes that the in-
strument is configured to its power-up de- reading in ohms (a), and them DISPLAY pro-
fault conditions. If you are not sure about the vides the phase shift (0) of approximately 0".
setup configuration, simply turn the power
off and then on again.
The above procedure requires no instrument settings by
the operator. The test is completely automated by simply
NOTE using the power-up default setup configuration to test
The following procedure uses the Model 3323 DUTs. Of course this setup configuration is not desirable
Test Fixture to connect DUT to the instrument for all measurements and thus, requires the operator to
(see Figure 2-l). If using test cables, make sure modify appropriate operating parameters, such as the
4-terminal connections are used as explained test signal level and frequency.
in paragraph 3.4.
The test signal level and frequency can be modified as fol-
Perform the following steps to make basic L, C or Z meas-
lows:
urements:
Signal Level - On power up, the test signal level is set to
1. Connect the Model 3323 Test fixture to the instru-
1V rms as denoted by the front panel 1V LEVEL annun-
ment. This test fixture allows easy DUT connection
ciator. To select the alternate signal 1eveL (50mV rms),
to the instrument, and provides accurate measure-
simply press the 50mV LEVEL key on the front panel.
ments by eliminating the stray capacitance of test ca-
bles.
2. Note that automatic function is selected as denoted
by the AUTO annunciator to the left of the yellow Signal Frequency - On power up, the test frequency is
AUTO key. In AUTO function, the instrument will set to 1kHz as denoted by a FREQ annunciator. To select
automatically select the appropriate function (L, C or one of the other frequencies (lOkHz, 1OOkHz or 120Hz),
Z) for the device connected to it. press and release the appropriate FREQ key.
2-2 +
+ SECTION 2
Getting Started
1-1 3321 LCZ METER
I
J
1 ZERO Jl LEVEL (OPEN) j
ciauve 2-l. Model 3322 Test Fixture Connection
2-3
+
+
SECTION 3
Operation
3.1 INTRODUCTION ciators and connectors on the front and rear panels of the
instrument.
This section covers front panel operation. For operation
over the GPIB bus, see Section 4.
The front and rear panels of the instrument are shown in
Figure 3-l and Figure 3-2.
3.2 FRONT AND REAR PANEL
FAMILIARIZATION
The following information describes the controls, annun-
3-l
+
SECTION 3
I -1 3321 LCZMETER I
m DISPLAY m DISPLAY
l BUSY
l L(H) C M l a l ESR(O) P M
. C(F) n k 0 D 0 G(S) n k
. h I,"\ D m l olden1 P m
.:.-..:.:.:.:.<.:.:.:.:.:.:.:.:.:.,.:.:.
FREQ(Hz) :.:
..:.:.:.:.:. :.:.:.:.ix.:.:
:.:.:.:.:.:.:
BIAS
DISCHARGE CAPACITORS
BEFORE CONNECTING A UNKNOWN
I \
II
ZERO )I LE"EL,OPEN) j
I I
\ I \ I
Figure 3-1. Model 3321 Front Panel
3.2.1 Front Panel m DISPLAY Function Parameter Indicators - These
annunciators denote the selected function parameter:
IAl DISPLAY/ m DISPLAY 4-l/2 Digit Displays -
Primarily used to display the measurement for the se- Q Quality factor
lected function and function parameter. The selected D Dissipation factor (D = 1 /Q)
function and function parameter are indicated by annun- ESR Equivalent series resistance
ciators to the left of the two displays. The annunciators to G Parallel conductance
the right of the displays indicate the magnitude of the 8 Phase angle of impedance
reading using exponent symbols (i.e. k, u, M, etc.).
m DISPLAY Function Indicators - These annuncia- Exponent annunciators (both displays) - The following
tors denote the selected function: exponent annunciators are used to denote the magnitude
of the reading:
L Self inductance (H)
C Electrostatic capacity (F) M= mega = lo6
IZI Resistance or impedance (0) k= kilo = 103