KEI 7056 Instruction 电路图.pdf

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1、Model 7056 General Purpose Scanner Card Instruction Manual Contains Operating and Servicing Information Document Number: 7056-901-01 Rev. D RadioFans.CN 收音机爱 好者资料库 WARRANTY Keithley Instruments, Inc. warranty this product to be free from defects in tnatcrial and workmanship for a period of I year fr

2、om 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 defecti

3、ve. 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

4、 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 Keitbleys express written consent, o

5、r misuse of any product or part. This warranty also does not apply to fuses, software, non-rechargeable batteries, damage from battery leak- age, or problems arising from normal wear or failure to follow instructions. THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING

6、ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS 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

7、 OF THE USE OF ITS INSTRU- MENTS AND SOFTWARE EVEN IF KBITHLEY INSTRUMENTS, INC., HAS BEEN ADVISED IN ADVANCE OF THE POSSIBILITY 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

8、 DAMAGE TO PROPERTY. RadioFans.CN 收音机爱 好者资料库 Model 7056 General Purpose Scanner Card Instruction Manual 01992, Kcithlcy Instruments, Inc. All rights reserved. Cleveland, Ohio, U.S.A. January 1992, First Printing Document Number: 7056-901-01 Ilcv. D RadioFans.CN 收音机爱 好者资料库 Safety Precautions The foll

9、owing safety precautioos should be obsewed before using this product and any asno- ciated instrumcntatioo. Although some inrtromeots and accessories woold nonnally bo used with nowhazardous voltages, there arc situations wberc hazardous conditions may be present. This product is intended for use by

10、qualified personnel who rccogoiu: shock hazards and are familiar with tbc safety pnxaotions rcqoircd to avoid possible injuly. Read lbe operating it- formation carefully before using the product. The types of product users arc: Kesponsiblc body is tbe iodividunl or group responsible for the USC sod

11、owinleoaoce of equipment, for ensuring tlnt the equipment ia operated within its spccilications and operat- ing limits, and for ensuring that operators are adequately trained. Operators use the product for its intended function. Tbey most be trained in electrical safety procedures and proper use of

12、the iostrument. lhey most be protected from electric shock and onmt with hazardous live circuits. Maintenance personnel perform mutioe procedures oo the product to keep it operadog, for example, setting the hoc voltage or replacing consumable materials. Maintenance proccdurcs am dcacribed in the man

13、ual. The procedures explicitly state if the operator nay perform them. Othcrwisc, they should be performed only by senice pcnonoel. Service personnel are trained to work on live circuits, sod perfoonn safe installations sod re- pairs of products. Ooly properly trained setvice personocl may perform i

14、nstallation and scr- vice procedures. Exercise extreme caution whco a shock hazard is present. Lethal voltage may be present on cable coonector jacks or test fixtures. 111 American National Standards lostitute (ANSI) stam that a shock hazard exists wheo voltage levels greater than 30V RMS, 42.4V pea

15、k, or 60VDC are present. A good safety practice is to expect that hazardous voltage is present in any unknown circuit before measuring. Users of this product must be protected fmm electric shock at all timer. The responsible body must eosum thtat wets aw pwented a.cces aod/orinsulatcd from every con

16、nection point. lo some cases, conoectiuns most be exposed to potential buman cootact. Product usa io these circuo- stances must be trained to protect themselves from the risk of electric shock. If the circuit is ca- pable of operating at or abovc 1wO volts, no conductive part of the circuit may be e

17、xposed. AY described in the Ioteroational Electratechnical Commission (IEC) Standard IEC 664, dig- ital multimcter measuring circuits (e.g., Keifhley Models 175A, 199, 2OOQ,2COl, 2002, and 2010) are Installation Category II. All other instruments signal tennioals are Installation Cat- egory I and mu

18、st oat be conoected to mains. Do not conoect switching cards directly to unlimited power circuits. They are inlendcd to bc used with impedance limited sources. NEVER connect switching cards directly to AC mains. Wheo conoccting sources to switching cards. iostall protective devices to limit fault cu

19、rrent sod voltage to tbc card. Before operating ao instrument, make sure the line cord is connected to a properly grounded power receptacle. Inspect the connecting cables, test leads, and jumpers for possible wear, cracks, or breaks bcforc each oso. For maximum safety, do not touch the product, test

20、 cables, or any other instrumcots while pow- er is applied to the circuit under test. ALWAYS remove power from the entire test system sod dischuge soy capxitors before: coooccting or disconnecting cables or jumpers, installing 01 removing switching cards. or making iotemtil chaogcs, socb as installi

21、ng or nzmoviog jumpers. Vu not touch soy object that could provide a con-cot path to tbc common side of the circuit under test or power line (eatth) ground. Always make measurements witb dry hands while standing oo a dly, insulated surface capable of withstanding tbc voltage bciog measured. The inst

22、rument and accessories most be used in accordance with its specifications and op- eratiog iostructioos or tbe safety of the equipment may be impaired. Do not exceed the maximum signal levels of the instruments and accessories. as defined in tbe speciticationr sod operatiog information, and es show o

23、n the instrument or test fixture panels, or switcbiog cant. When fores are used in a product, replace with same type sod rntiog forcootioued pmtectioo against fire hazard. Cbassir connections must only be used as shield coooectioos for mesuriog circoits, NOT as safety eaflh ground connections. If yo

24、u are using II test fixture, keep the lid closed while power is applied to the device under test. Safe operation requires tbe we of a lid interlock. 1ra screw is present, connect it to safety earth ground uaiog the wire recommended in the user documentation. The ! symbol on an iostroment indicates t

25、hat the user should refer to the operating ill- n stmctions located io tbc manual. The h symbol on al iostmment shows that it CNI source or IIICRIIUII: loo0 volts or more, ill- eluding the combined etTect of normal ad common mode voltages. Use stiuldarrl safety precau- lions to avoid pcrsooal cootec

26、t with these voltages. TIE WARNING beading in A manual enplaios dangers that might result in personal injury or death. Always read the associated information wy carefully hcfore ptxformiog the indicated pCCCdUC. The CAUTION beading in a manual explains hazards that could damage the instrument. Such

27、damage may invalidate the warrmty. lostrumcntatioo and accessories shall not be connected to humans. Before performing any maintenance, disconnect the line cord and all test cables. To maintain pmtcctioo from electric shock and ftre, replacement components in mains cir- coils, including the power tr

28、ansfouner, test leads, and ioput jacks, must he purchased from Keithley Instruments. Standard fuses, with applicable national safety appmvals, may be used if the ratiog sod type are the same. Other components that are not safety r 10 ciosores (at maximum signal CONTACT RESISTANCE: cZI2 to rated life

29、. CONTACT POTENTIAL: lCV per contact pair input to output with copper leads (c5OpV typical). ACNATtON TIME: lOgQ, OOpF typical; MdB into 500 I-. INPUT ISOLATION: Differential: lOgP and lOgQ and 45OpF typical. COMMON MODE VOLTAGE: ,50” peak. ENVIRONMENT: operating: 0 to MT, up to 3sT at 70% RH. stora

30、ge -WC to WC. DIMENSIONS, WEIGHT: 32mm high x 114mm wide x 272mm long K25 in. x 4.5 in. x 10.75 in.). Net weight 027kg (9.5 oz.). Spedfications subject to change without notice. NOTE BecauseofhighimpedanceoftheboardsSedalcareshouldbetakeninboth handling and using the board to prevent board by the ed

31、ges when win it and kee egradatmn of prfomence. Handle the To dean the board use distill e% % it free of body oils, dirt and contaminants. water an a dean cotton swab or soft brush Thoroughly saub the beard and then remove all water residue with dry nitrogen gas. After the board is dean bake for fiv

32、e hours at 54C and low relative humidity. 1.1 1.2 1.3 2.1 2.2 2.3 3.1 3.2 3.3 4.1 4.2 4.3 4.4 4.5 1 2 3 4 5 6 7 a 9 10 11 1 2 3 TABLE OF CONTENTS SECTION l-GENERAL INFORMATION Introduction . Warrann/ Information . ManualAddenda . SECTION Z-OPERATION lntraduction . Wiring and Installation. . Operatin

33、g Considerations . SECTION 3-SERVICING INFORMATION Introduction . Required Test Equipment . Performance Verification . SECTION 4-REPLACEABLE PARTS Introduction . ReplaceablePans . Ordering Information . FactoryService . Component Layout and Schematic Diagram . LIST OF FIGURES Typical Channel, Voltag

34、e Scanner Mode . Typical2by5Matrix . Channel Numbering-l-Pole . Thermal Offset Test . Model 7056 Timing Test in Model 705. . Model7056 Isolation Test in Model 705 . Differential Input Isolation . Channel Isolation . Model7055, Component Location Drawing. . Model 7056, Component Location Drawing. . G

35、eneral Purpose Scanner Card, Schematic Diagram . LIST OF TABLES Recommended Test Equipment . Model 7055 Replaceable Parts List . Model 7056 Replaceable Parts List . 14 7 14 3 3 5 7 7 7 13 13 13 13 13 3 4 6 a 9 10 11 12 15 16 17 SECTION 1 GENERAL INFORMATION 1.1 INTRODUCTION The Model 7056 is e gener

36、al purpose relay ecenner plug-in card which is field- installable in en appropriate Kelthley ecenner mainframe (e.g. Model 706). The Model 7056 w/II switch up to 10 channels. The card can be used 88 e voltage ecenner. independent relay card or e matrix card. The Z-pole switching 18 ec- compllshed in

37、 less than 2ms and the expected relay life is lo8 closure8 et the maximum contact ratings. Barrier strips ere used to facilitate input end output connections to the relay ecenner plug-in card. The plug-in card can easily be removed through the rear panel of the ecenner mainframe. The Model 7066 prov

38、ides the connection to the individual channels via the screw clamp type terminal strips. 1.2 WARRANTY INFORMATION Warranty information is staled on the inside front cover of the manual. If there is e need for service, contact the Keithley representative or authorized repair facility in your area. Ch

39、eck the back cover of this manual for addresses. The service form supplied at the end of the manual should be used to provide the repair facility with adequate informoiion concerning any difficulty. 1.3 MANUAL ADDENDUM Improvements or changes to this manual will be explained on en addendum in- clude

40、d with this manual. 1 SECTION 2 OPERATION 2.1 lNTROOUCTlON This section provides information needed to use the Model 7056 with an sppro. priate scanner mainframe. 2.2 WIRING AND INSTALLATION 1. Wiring Configuration-Each channel on the Model 7066 card consists of 10-Z Form A relays and 2-1 Form A rel

41、ays for one pole mode. The card ten be wired es e voltage scanner card, independent relay card, or e matrix card. Channel 1, on the component designation. shows the terminal locations which are similar to Channels 1 through 6. Channel 10 shows the terminal locations typical for Channels 5 through 10

42、. A. Voltage Scanner Card-The Model 7056 can be used as a voltage scanner card. Figure 1 shows e wpical channel in the voltage scenner mode. When the Model 7056 card is used in e Model 705 scenner mainframe, one of 10 channels can be switched to the output et 8 time. When ecanning, the relay contrac

43、t8 of one channel will break before the relay confactS on e second channel will make, ensuring isolation between channels. B. Independent Relay Card-The Model 7066 plug-in card can be used es an independent relay card. The relay switching 18 still controlled by the scan- ner mainframe. When using th

44、e circuit, do not exceed the maximum con- tact ratings. C. Matrix Card-The Model 7066 ten be used 88 e 1 by 10 or a 2 by 6 matrix card. The Model 7056 should be first set up 88 e voltage scanner card. To use it es e 1 by 10 matrix card, the output HI or output LO can be used to switch to any of the

45、10 input HIS or input LOS. For “88 88 e 2 by 6 matrix card, refer to Figure 2. This allows the ueer to switch the output HI or out- put LO to sny of five inputs. Figure 2 shows the 2 by 5 matrix setup. 2. Installation-Refer to the Model 706 Instruction Msnual for installsdon in- structions. TO OTHER

46、 CHANNELS Figure 1. Typical Chennel, Voltage Scanner Mode 3 LO OUTPUT HI CH.1 k-4 CHl LO -iy2 CM.2 HI -Ii+, ( CM.4 LO I F”1 c r-t I F”C c i-i-c”0 ( CH.0 HI “.” CM5 LO rl WI.7 CH7 LO F”o. WI.6 HI Figure 2. 2 by 6 Matrix 2.3 OPERATING CONSIDERP,TIDNS 1. Signal Levels-The signal levels that the Model 7056 operates et are 1OV 115OV maximum/lOmA 1250mA maximum). The load should only be resistive, and 1OVA is the maximum switching lev