KEI 220 230 Inst 电路图.pdf

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1、Model 220Programmable Current Source Instruction 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 1 year from date of shipment. Keithley In

2、struments, 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, w

3、rite 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, transportatio

4、n 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 modifi cation without Keithleys express written consent, or misuse of any product or part

5、. 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 MERCHANTA

6、BILITY OR FITNESS FOR A PARTICULAR USE. THE REMEDIES PRO- VIDED 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

7、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 I

8、nstruments, Inc. 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

9、 8610-82251886 Fax: 8610-82251892 FINLAND: Halsuantie 2 00420 Helsinki, Finland 09-5306-6560 Fax: 09-5306-6560 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

10、 Commerce Park, Brunel Road Theale Berkshire RG7 4AB 0118 929 7500 Fax: 0118 929 7519 INDIA: 1/5 Eagles Street Langford Town Bangalore 560 025 080 212 8027 Fax: 080 212 8005 ITALY: Viale San Gimignano, 38 20146 Milano 02-48 39 16 01 Fax: 02-48 30 22 74 JAPAN: New Pier Takeshiba North Tower 13F 11-1,

11、 Kaigan 1-chome Minato-ku, Tokyo 105-0022 81-3-5733-7555 Fax: 81-3-5733-7556 KOREA: 2FL., URI Building 2-14 Yangjae-Dong Seocho-Gu, Seoul 137-888 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 Al

12、l 15, 4tr 169 70 Solna 08-509 04 600 Fax: 08-655 26 10 TAIWAN: 13F-3, NO. 6, Lane 99, Pu-Ding Road, Hsinchu, Taiwan, ROC. 886-3-572-9077 Fax: 886-3-572-9031 4/03 RadioFans.CN 收音机爱 好者资料库 Model 220 Programmable Current Source Instruction Manual- 01982, Keithley Instruments, Inc. All rights reserved. C

13、leveland, Ohio, U.S.A. Eighth Printing, August 2000 Document Number: 220-901-01 Rev. H 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 and Addenda created for this manual. The Revision Level letter increases alphabetically as the m

14、anual 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 o

15、f the manual are incorporated into the new Revision of the manual. Each new Revi- sion includes B revised copy of this print history page. Revision G (Document Number 220-901-01) . 1992 Revision H (Document Number 220-901-01) . August2000 Safety Precautions The following safety precautions should be

16、 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 mcog- niz

17、e shock hazards and are familiar with the safety precautions m- quired to avoid possible injury. Read the operating information carefully before using the product. The types of product users are: Responsible body is the individual or group responsible for the use and maintenance of equipment. for en

18、suring that the equipment is operated within its specifications and operating limits, and for en- suring that operators are adequately trained. Operators use the product for its intended function. They must be trained in electrical safety procedures and proper use of the instn- mat. They must be pro

19、tected from electric shock and contact with hazardous live circuits. Maintenance personnel perform mutine procedures on the product to keep it operating, for example, setting the line voltage or replac- ing consumable materials. Maintenance procedures are described in the manual. The procedures expl

20、icitly state if the operator may per- form them. Othenvise, they should be performed only by service pSONE1. Service personnel are trained to work on live circuits, and perform safe installations and repairs of pmducts. Only properly trained ser- vice personnel may perform installation and service p

21、rocedures. Exercise extreme caution when a shock hazard is present. Lethal voltage may be present on cable connector jacks 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, or 60VDC are present.

22、A good safety practice is to expect that hazardous voltage is present in any unknown circuit before tllLXSUi”g. 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

23、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, no conductive part of the circuit may be exposed. As describe

24、d in the lntemational Electrotechnical Commission (IEC) Standard IEC 664, digital multimeter measuring circuits (e.g., Keithley Models l75A, 199,2000,2001, 2002, and 2010) arc Installation Category II. All other instruments signal terminals are Installation Category I and must not be connected to ma

25、ins. 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 con- necting sources to switching cards, install protective devices to lim- it fault cormnt and voltage to t

26、he card. Before operating an instrument, make sure the line cord is coonect- 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 othe

27、r inshoments 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 jump- ers, installing or removing switching cards, or making internal changes, such as installing or removing jump

28、ers. 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 accessor

29、ies must be used in accordance with its specifications and operating instructions or the safety of the equip- ment may be impaired. Do not exceed the maximum signal levels of the instruments and ac- cessories, as defined in the specifications and operating infonna- don, and as shown on the instrumen

30、t 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

31、a test fixture, keep the lid closed while power is a.p- 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. Then symbol on an instrument indicates that the us

32、er should E- fer to the operating instructions located in the manual. me 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 voltage

33、s. The WARNING heading in a manual explains dangers that might result in personal injury or death. Always read the associated infor- mation very carefully before performing the indicated procedure. The CAUTION heading in a manual explains hazards that could damage the instrument. Such damage may inv

34、alidate 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, tes

35、t leads, and input jacks, must be purchased from Keithley Instn- mats. 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

36、original component. (Note that se- lected parts should be purchased only through Keithley Instruments to maintain accuracy and functionality of the product.) If you are untre about the applicability of a replacement component, call a Keithley Instruments office for information. To clean an instrumen

37、t, 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. Products that consist of a circuit board with no case or chassis (e.g., data acquisition board for instal

38、lation into a computer) should never require cleaning if handled according to in- structions. If the board becomes contaminated and operation is af- fected, the hoard should be returned to the factmy for proper cleaning/setvicing. Rev. IO/99 MODEL 220 SPECIFICATIONS IEEE-488 BUS IMPLEMENTATION TABLE

39、 OF CONTENTS Paragraph Title Page SECTION l-GENERAL INFORMATION 1.1 Introduction . 1.2 Features . 1.3 Warranty Information . 1.4 ManualAddenda . 1.5 Safety Symbols and Terms . 1.6 Unpacking and Inspection . 1.7 Repackaging For Shipment . 1.8 Specifications . 1.9 Accessories . 1.9.1 Optional Accessor

40、ies . 1.9.2 Supplied Accessories. . SECTION 2-OPERATION 2.1 Introduction . 2.2 Preparation For Use . _ - . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . L.L.1 .,. ._. 2.2.2 2.3 2.3.1 2.3.2 ,2.3.3 2.3.4 2.3.5 2.4 2.4.1 2.4.2 2.5 2.5.1 2.5.2 2.5.3 ,. . . vower-up . Wa

41、rm-Up . Operating Instructions . Environmental Conditions . Front Panel Control Descriptions . AearPanelDescriptions . OutputConnector . InductiveLoads . Operation Of The Model 220. . Model 220 General Operating Procedure . ExampleofOperation . Applications . Calibradon . ResistivityMeasurement . Di

42、ode Characterization . . . . . . . . 2-1 2-1 2-l 2-l 2-l 2-1 2-1 ;=t 2-4 2-5 2-5 2-5 . . 2-9 . 2-9 . 2-9 . 2-10 l-l l-l l-l 1-l 1-l l-l l-l l-l 1-2 1-2 1-2 SECTION 3-PERFORMANCE VERIFICATION 3.1 Introduction . 3.2 Environmentalconditions . 3.3 RecommendedTestEquipment . 3.4 InitialCondltlons . El Performance Verification Procedure .