KEI 7172 Instruction 电路图.pdf

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1、Model 7172Low Current 8 12 Matrix Card 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

2、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,

3、 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, transportat

4、ion 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 pa

5、rt. 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 MERCHAN

6、TABILITY 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 INSTRUMENT

7、S 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

8、 Instruments, 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、8610-6202-2886 Fax: 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 Comm

10、erce Park, Brunel 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 Yangj

11、ae-Dong Seocho-Gu, 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 Fa

12、x: 01-820 30 81 TAIWAN: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 RadioFans.CN 收音机爱 好者资料库 Model 7172 Low Current 8 12 Matrix Card Instruction Manual 1991, Keithley Instruments, Inc. All rights

13、 reserved. Cleveland, Ohio, U.S.A. Document Number: 7172-901-01 Rev. C RadioFans.CN 收音机爱 好者资料库 SAFETY PRECAUTIONS The following safety precautions should be observed before using the Model 7172 and the associated instruments. This matrix card is intended for use by qualified personnel who recognize

14、shock hazards and are familiar with the safety precautions required to avoid possible injury. Read over this manual carefully before using the mati card. Exercise extreme caution when a shock hazard is present at the test circuit. User-supplied lethal voltages may be present on the card connector ja

15、cks. The American National Standards Institute (ANSI) states that a shock hazard exists when voltage levels greater than 3OV RM!? or 42.4V peak are present. A good safety practice is to expect that hazardous voltage is present in any unknown circuit before measuring. Do not exceed 200V between any t

16、wo pins or between any pin and chassis. 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 capaci

17、tors before connecting or disconnecting cables from the matrix card. 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 wit

18、h- standing the voltage being measured. Do not exceed the maximum allowable input of the matrix card, as defined in the specifications and operation section of this manual. Instrumentation and accessories should not be connected to humans Safety Precautions The following safety precautions should be

19、 observed before using this product and any associated instrumentation. Although some in- struments and accessories would normally be used with non-haz- ardous voltages, there are situations where hazardous conditions may be present. This product is intended for use by qualifi ed personnel who recog

20、- nize shock hazards and are familiar with the safety precautions re- quired to avoid possible injury. Read and follow all installation, operation, and maintenance information carefully before using the product. Refer to the manual for complete product specifi cations. If the product is used in a ma

21、nner not specifi ed, the protection pro- vided by the product may be impaired. The types of product users are: Responsible body is the individual or group responsible for the use and maintenance of equipment, for ensuring that the equipment is operated within its specifi cations and operating limits

22、, 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 instru- ment. They must be protected from electric shock and contact with hazardous live circuits. Maintenance p

23、ersonnel perform routine procedures on the product to keep it operating properly, for example, setting the line voltage or replacing consumable materials. Maintenance procedures are de- scribed in the manual. The procedures explicitly state if the operator may perform them. Otherwise, they should be

24、 performed only by service personnel. Service personnel are trained to work on live circuits, and perform safe installations and repairs of products. Only properly trained ser- vice personnel may perform installation and service procedures. Keithley products are designed for use with electrical sign

25、als that are rated Installation Category I and Installation Category II, as de- scribed in the International Electrotechnical Commission (IEC) Standard IEC 60664. Most measurement, control, and data I/O sig- nals are Installation Category I and must not be directly connected to mains voltage or to v

26、oltage sources with high transient over-volt- ages. Installation Category II connections require protection for high transient over-voltages often associated with local AC mains connections. Assume all measurement, control, and data I/O con- nections are for connection to Category I sources unless o

27、therwise marked or described in the Manual. Exercise extreme caution when a shock hazard is present. Lethal voltage may be present on 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,

28、42.4V peak, or 60VDC are present. A good safety practice is to expect that hazardous voltage is present in any unknown circuit before measuring. Operators of this product must be protected from electric shock at all times. The responsible body must ensure that operators are pre- vented access and/or

29、 insulated from every connection point. In some cases, connections must be exposed to potential human con- tact. Product operators 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 conductiv

30、e part of the circuit may be exposed. 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-

31、 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. When installing equipment where acce

32、ss to the main power cord is restricted, such as rack mounting, a separate main input power dis- connect device must be provided, in close proximity to the equip- ment and within easy reach of the operator. For maximum safety, do not touch the product, test cables, or any other instruments while pow

33、er 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 jumpers. Do not touch any

34、object that could provide a current path to the com- mon 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

35、accordance with its specifi cations 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 defi ned in the specifi cations and operating informa- tion, and as shown on the instrument or test fi xtu

36、re panels, or switching card. When fuses are used in a product, replace with same type and rating for continued protection 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 xtur

37、e, keep the lid closed while power is ap- plied to the device under test. Safe operation requires the use of a lid interlock. 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 re-

38、fer to the operating instructions located in the manual. The 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 WARNING

39、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 invalidate the war

40、ranty. 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 fi re, replacement components in mains circuits, including the power transformer, test leads, and i

41、nput jacks, must be purchased from Keithley Instru- ments. 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 com

42、ponent. (Note that se- lected 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 offi ce for information. To clean an instrument, use a d

43、amp 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 installation int

44、o a computer) should never require cleaning if handled according to in- structions. If the board becomes contaminated and operation is af- fected, the board should be returned to the factory for proper cleaning/servicing. ! 11/01 7172812 Low Current Matrix Card 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2

45、2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2

46、2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 H G CH G CH G CH G CH G CH G CH G CH G CH G CH G CH G CH G C H G C H G C H G C H G C H G C H G C H G C H G C Columns Rows User connections and expansion Offset current self test MATRIX CONFIGURATION: Single 8 rows12 columns. Expanding the columns can be

47、done internally by connecting the rows of mul- tiple 7172 cards together with coax jumpers. OFFSET CURRENT SELF TEST: An onboard electrometer circuit measures offset current when the rear panel switch is pushed. Pass/fail LEDs indicate if offset is above or below 500fA. The on- board SMB connector o

48、utputs voltage proportional to current (1mV/10fA). CROSSPOINT CONFIGURATION: 2-pole Form A (Signal, Guard). CONNECTOR TYPE: 3-lug triax (Signal, Guard, Chassis). MAXIMUM SIGNAL LEVEL: Pin to pin or pin to chassis: 200V. 1A carry/0.5A switched, 10VA. CONTACT LIFE: Cold Switching: 108closures. At Maxi

49、mum Signal Level: 105closures. PATH RESISTANCE (Per Conductor): 1.0 initial, 1.5 at end of contact life. CONTACT POTENTIAL: Differential (Signal to Guard): 30V. Single ended (Guard to Guard or Signal to Signal): 60V. OFFSET CURRENT: 1013, 0.4pF typical. Differential (Signal to Guard): 109, 170pF typical. Common (Signal and Guard to Chassis): 109, 430pF typical. CROSSTALK (1MHz,50 Load):70dB. INSERTION LOSS (1MHz,50 Load):0.22dB typical. 3dB BANDWIDTH (50