KEI 2000 Calibration 电路图.pdf

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1、Model 2000Multimeter Calibration Manual A G R E A T E RM E A S U R E O F C O N F I D E N C E RadioFans.CN 收音机爱 好者资料库 WARRANTY Keithley Instruments, Inc. warrants this product to be free from defects in material and workmanship for a period of 3 years from date of shipment. Keithley Instruments, Inc.

2、 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 yo

3、ur 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. Repa

4、ired 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 modifi cation without Keithleys express written consent, or misuse of any product or part. This warranty

5、 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 FITNE

6、SS FOR A PARTICULAR USE. THE REMEDIES PROVIDED HEREIN ARE BUYERS 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

7、 IF KEITHLEY INSTRUMENTS, INC., HAS BEEN ADVISED IN ADVANCE OF THE POSSIBILITY OF SUCH DAMAGES. SUCH EXCLUDED DAM- AGES 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.

8、28775 Aurora Road Cleveland, Ohio 44139 440-248-0400 Fax: 440-248-6168 1-888-KEITHLEY (534-8453) Sales Offi ces:BELGIUM:Bergensesteenweg 709 B-1600 Sint-Pieters-Leeuw 02-363 00 40 Fax: 02/363 00 64 CHINA:Yuan Chen Xin Building, Room 705 12 Yumin Road, Dewai, Madian Beijing 100029 8610-6202-2886 Fax:

9、 8610-6202-2892 FINLAND:Tietjntie 2 02130 Espoo Phone: 09-54 75 08 10 Fax: 09-25 10 51 00 FRANCE:3, alle des Garays 91127 Palaiseau Cdex 01-64 53 20 20 Fax: 01-60 11 77 26 GERMANY:Landsberger Strasse 65 82110 Germering 089/84 93 07-40 Fax: 089/84 93 07-34 GREAT BRITAIN: Unit 2 Commerce Park, Brunel

10、Road Theale Berkshire RG7 4AB 0118 929 7500 Fax: 0118 929 7519 INDIA:Flat 2B, Willocrissa 14, Rest House Crescent Bangalore 560 001 91-80-509-1320/21 Fax: 91-80-509-1322 ITALY:Viale San Gimignano, 38 20146 Milano 02-48 39 16 01 Fax: 02-48 30 22 74 KOREA:FL., URI Building 2-14 Yangjae-Dong Seocho-Gu,

11、 Seoul 137-130 82-2-574-7778 Fax: 82-2-574-7838 NETHERLANDS:Postbus 559 4200 AN Gorinchem 0183-635333 Fax: 0183-630821 SWEDEN:c/o Regus Business Centre Frosundaviks All 15, 4tr 169 70 Solna 08-509 04 679 Fax: 08-655 26 10 SWITZERLAND:Kriesbachstrasse 4 8600 Dbendorf 01-821 94 44 Fax: 01-820 30 81 TA

12、IWAN:1FL., 85 Po Ai Street Hsinchu, Taiwan, R.O.C. 886-3-572-9077 Fax: 886-3-572-9031 Copyright 2001 Keithley Instruments, Inc. Printed in the U.S.A. 11/01 3 Yr warranty w/ww addres Page 1 Monday, December 10, 2001 9:09 PM RadioFans.CN 收音机爱 好者资料库 Model 2000 Multimeter Calibration Manual 1994, Keithl

13、ey Instruments, Inc. All rights reserved. Cleveland, Ohio, U.S.A. Fourth Printing December 2001 Document Number: 2000-905-01 Rev. D Title Page Page 1 Monday, December 10, 2001 9:09 PM RadioFans.CN 收音机爱 好者资料库 Manual Print History The print history shown below lists the printing dates of all Revisions

14、 and Addenda created for this manual. The Revision Level letter increases alphabetically as the manual undergoes sub- sequent updates. Addenda, which are released between Revisions, contain important change in- formation that the user should incorporate immediately into the manual. Addenda are numbe

15、red 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 2000-905-01).November 1994 Addendu

16、m A (Document Number 2000-905-02).June 1995 Revision B (Document Number 2000-905-01).June 2000 Revision C (Document Number 2000-905-01).January 2001 Revision D (Document Number 2000-905-01).December 2001 All Keithley product names are trademarks or registered trademarks of Keithley Instruments, Inc.

17、 Other brand names are trademarks or registered trademarks of their respective holders. Print History Page 1 Monday, December 10, 2001 9:10 PM The following safety precautions should be observed before using this product and any associated instrumentation. Although some instruments and accessories w

18、ould normally be used with non-hazardous voltages, there are situations where hazardous conditions may be present. This product is intended for use by qualifi ed personnel who recognize shock hazards and are familiar with the safety precautions required to avoid possible injury. Read and follow all

19、installation, operation, and maintenance information carefully before us- ing the product. Refer to the manual for complete product specifi cations. If the product is used in a manner not specifi ed, the protection provided by the product may be impaired. The types of product users are: Responsible

20、body is the individual or group responsible for the use and maintenance of equipment, for ensuring that the equip- ment is operated within its specifi cations and operating limits, and for ensuring that operators are adequately trained. Operators use the product for its intended function. They must

21、be trained in electrical safety procedures and proper use of the instrument. They must be protected from electric shock and contact with hazardous live circuits. Maintenance personnel perform routine procedures on the product to keep it operating properly, for example, setting the line voltage or re

22、placing consumable materials. Maintenance procedures are described in the manual. The procedures explicitly state if the operator may perform them. Otherwise, they should be performed only by service personnel. Service personnel are trained to work on live circuits, and perform safe installations an

23、d repairs of products. Only properly trained service personnel may perform installation and service procedures. Keithley products are designed for use with electrical signals that are rated Installation Category I and Installation Category II, as described in the International Electrotechnical Commi

24、ssion (IEC) Standard IEC 60664. Most measurement, control, and data I/O signals are Installation Category I and must not be directly connected to mains voltage or to voltage sources with high tran- sient over-voltages. Installation Category II connections require protection for high transient over-v

25、oltages often associated with local AC mains connections. Assume all measurement, control, and data I/O connections are for connection to Category I sourc- es unless otherwise marked or described in the Manual. Exercise extreme caution when a shock hazard is present. Lethal voltage may be present on

26、 cable connector jacks or test fi xtures. The American National Standards Institute (ANSI) states that a shock hazard exists when voltage levels greater than 30V RMS, 42.4V peak, or 60VDC are present. A good safety practice is to expect that hazardous voltage is present in any unknown circuit before

27、 measuring. Operators of this product must be protected from electric shock at all times. The responsible body must ensure that operators are prevented access and/or insulated from every connection point. In some cases, connections must be exposed to potential human contact. Product operators in the

28、se 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, no conductive part of the circuit may be exposed. Do not connect switching cards directly to unlimited power circuits. They are intended to be used w

29、ith impedance limited sourc- es. NEVER connect switching cards directly to AC mains. When connecting sources to switching cards, install protective de- vices to limit fault current and voltage to the card. Before operating an instrument, make sure the line cord is connected to a properly grounded po

30、wer receptacle. Inspect the con- necting cables, test leads, and jumpers for possible wear, cracks, or breaks before each use. When installing equipment where access to the main power cord is restricted, such as rack mounting, a separate main input pow- er disconnect device must be provided, in clos

31、e proximity to the equipment and within easy reach of the operator. 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

32、 disconnecting ca- bles or jumpers, installing or removing switching cards, or making internal changes, such as installing or removing jumpers. S afety Precautions 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. Al-

33、 ways 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 specifi cations and operating instructions or the safety of the equipment may be impaired. Do not e

34、xceed the maximum signal levels of the instruments and accessories, as defi ned in the specifi cations and operating in- formation, and as shown on the instrument or test fi xture panels, or switching card. When fuses are used in a product, replace with same type and rating for continued protection

35、against fi re 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 fi xture, keep the lid closed while power is applied to the device under test. Safe operation requires the use of a lid interlock.

36、 If a screw is present, connect it to safety earth ground using the wire recommended in the user documentation. The symbol on an instrument indicates that the user should refer to the operating instructions located in the manual. The symbol on an instrument shows that it can source or measure 1000 v

37、olts or more, including the combined effect of normal and common mode voltages. Use standard safety precautions to avoid personal contact with these voltages. The WARNING heading in a manual explains dangers that might result in personal injury or death. Always read the associated information very c

38、arefully before performing the indicated procedure. The CAUTION heading in a manual explains hazards that could damage the instrument. Such damage may invalidate the war- ranty. Instrumentation and accessories shall not be connected to humans. Before performing any maintenance, disconnect the line c

39、ord and all test cables. To maintain protection from electric shock and fi re, 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 ap- provals, may be used

40、 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

41、 the product.) If you are unsure about the applicability of a replacement component, call a Keithley Instruments offi ce for information. To clean an 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

42、or allow liquids to enter or spill on the instrument. Products that consist of a circuit board with no case or chassis (e.g., data acquisition board for installation into a computer) should never require cleaning if handled accord- ing to instructions. If the board becomes contaminated and operation

43、 is affected, the board should be returned to the factory for proper cleaning/servicing. ! 11/01 Table of Contents 1 Performance Verifi cation Introduction.1-2 Verifi cation test requirements.1-3 Performing the verifi cation test procedures.1-6 Verifying DC voltage.1-7 Verifying AC voltage .1-8 Veri

44、fying DC current .1-10 Verifying AC current.1-11 Verifying resistance .1-12 2 Calibration Introduction.2-2 Environmental conditions.2-3 Calibration considerations.2-4 Calibration code.2-5 Comprehensive calibration.2-6 Front panel calibration.2-7 SCPI command calibration.2-14 3 Calibration Command Reference Introduction.3-2 Command summary.3-4 Miscellaneous calibration commands.3-6