KEI 7111S INST 电路图.pdf

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1、 PA-822 Rev. A / 11-01 Model 7111-S-26589 Packing List Keithley Instruments, Inc. 28775 Aurora Road Cleveland, Ohio 44139 (440) 248-0400 This packing list provides information for Keithleys Model 7111-S-26589. The Model 7111-S-26589 contains a 7111-S card, a 7011-C card, and a bracket. Review the fo

2、llowing information before using the Model 7111-S-26589. RadioFans.CN 收音机爱 好者资料库 Safety Precautions The following safety precautions should be observed before using this product and any associated instrumentation. Although some in- struments and accessories would normally be used with non-haz- ardou

3、s voltages, there are situations where hazardous conditions may be present. This product is intended for use by qualifi ed personnel who recog- nize shock hazards and are familiar with the safety precautions re- quired to avoid possible injury. Read and follow all installation, operation, and mainte

4、nance information carefully before using the product. Refer to the manual for complete product specifi cations. If the product is used in a manner 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 res

5、ponsible for the use and maintenance of equipment, for ensuring that the equipment is operated within its specifi cations 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 pro

6、cedures and proper use of the instru- ment. 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 replacing consumable materials. Mai

7、ntenance procedures are de- scribed 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 and repairs of products. Only pro

8、perly trained ser- vice 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 de- scribed in the International Electrotechnical Commission (IEC) Standard IEC 60

9、664. Most measurement, control, and data I/O sig- nals are Installation Category I and must not be directly connected to mains voltage or to voltage sources with high transient over-volt- ages. Installation Category II connections require protection for high transient over-voltages often associated

10、with local AC mains connections. Assume all measurement, control, and data I/O con- nections are for connection to Category I sources unless otherwise 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

11、 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 measuring. Operators of

12、this product must be protected from electric shock at all times. The responsible body must ensure that operators are pre- vented access and/or insulated from every connection point. In some cases, connections must be exposed to potential human con- tact. Product operators in these circumstances must

13、 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 with impedance limited

14、 sources. NEVER connect switching cards directly to AC mains. When con- necting sources to switching cards, install protective devices to lim- 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. Ins

15、pect the connecting 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 power dis- connect device must be provided, in close proximity to the eq

16、uip- ment 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 disconnecting cabl

17、es or jump- ers, installing or removing switching cards, or making internal changes, such as installing or removing jumpers. Do not touch any 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

18、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 equip- ment may be impaired. Do not exceed the maximum signal levels of th

19、e instruments and ac- cessories, as defi ned in the specifi cations and operating informa- tion, 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 against fi re hazard. Chassis conne

20、ctions 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 ap- plied to the device under test. Safe operation requires the use of a lid interlock. RadioFans.CN 收音机爱 好者资料库 If a scr

21、ew 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- fer to the operating instructions located in the manual. The symbol on an instrument shows that it can source or mea- sure 1000 volts

22、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 infor- mation very care

23、fully before performing the indicated procedure. The CAUTION heading in a manual explains hazards that could damage the instrument. Such damage may invalidate the warranty. Instrumentation and accessories shall not be connected to humans. Before performing any maintenance, disconnect the line cord a

24、nd 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 Instru- ments. Standard fuses, with applicable national safety approvals, may be used if t

25、he 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 se- lected parts should be purchased only through Keithley Instruments to maintain accuracy and functionality of th

26、e 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 or

27、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 according to in- structions. If the board becomes contaminated and operation is

28、 af- fected, the board should be returned to the factory for proper cleaning/servicing. ! 11/01 RadioFans.CN 收音机爱 好者资料库 Model 7111-S Quad 1 10 Form C Multiplexer Card The following information is for the use of the Model 7111-S relay card with the screw terminal card replaced by a 96-pin connector c

29、ard. The pin numbers for the four banks are shown in Figure 2 through 5. Note that the contact potential is increased to less than 1 microvolt due to the addition of the 96-pin connector. Also, keep in mind that pins 1 and 33 must be jumpered to close the four output relays on the connector card. Th

30、e Model 7111-S is a low-voltage, quad 1 10, single-pole form C multiplexer card. (A second pole is normally not used but is available if needed.) The Model 7111-S assembly consists of a screw terminal connector card and a relay card. External test circuits are wired directly to the screw terminals o

31、f the connector card. Also available from Keithley is the Model 7011-ST. This is an extra screw terminal connector card, which can be used to wire a second test system without disturbing the wiring of the fi rst test system. Some key features of the 7111-S card include: Low contact potential and off

32、set current for minimal effect on low-level signals. The connector card detaches from the relay card allowing easy access to the screw terminals and jumpers. Easy jumper confi guration of one, two, three or four multiplexer banks. Backplane jumpers - Cutting jumpers disconnects multiplexer bank outp

33、uts from the Models 7001/7002 analog backplane. The Model 7111-S is a form C version of Keithleys 7011-S, which is a quad 1 10, two-pole form A multiplexer card. The cards have similar operating and servicing characteristics. Refer to the Model 7011-S and 7011-C Instruction Manual (Keithley part num

34、ber 7011-901-00) for details. Figure 1 shows a simplifi ed schematic of the 7111-S card. Figure 1 Model 7111-S simplifi ed schematic HI OUTPUT LO CH 1 LO HI HI LO CH 2 HI LO CH 10 NOTE: One of four banks shown. The LO input is normally not used but it is available if needed as shown. 2 HI BANK A LO

35、CH 1 96 64 HI LO CH 2 32 95 HI LO CH 3 63 31 HI LO CH 4 94 62 HI LO CH 5 30 93 LO HI 96 26 7111-S HI LO CH 6 61 29 HI LO CH 7 92 60 HI LO CH 8 28 91 HI LO CH 9 59 27 HI LO CH 10 90 58 LO HI 89 26 Notes:Pins 9 and 41 are the shield of 7011-MTC-(*) cable assembly.1. Pins 1 and 33 must be jumpered to a

36、llow the output relays on the connector card to close. This is provided in the 7011-MTC-(*). 2. Figure 2 Bank A schematic 3 HI BANK B LO CH 1 88 56 HI LO CH 2 24 87 HI LO CH 3 55 23 HI LO CH 4 86 54 HI LO CH 5 22 85 LO HI 81 18 7111-S HI LO CH 6 53 21 HI LO CH 7 84 52 HI LO CH 8 20 83 HI LO CH 9 51

37、19 HI LO CH 10 82 50 LO HI 81 18 Figure 3 Bank B schematic 4 HI BANK C LO CH 1 80 48 HI LO CH 2 16 79 HI LO CH 3 47 15 HI LO CH 4 78 46 HI LO CH 5 14 77 LO HI 73 10 7111-S HI LO CH 6 45 13 HI LO CH 7 76 44 HI LO CH 8 12 75 HI LO CH 9 43 11 HI LO CH 10 74 42 LO HI 73 10 Figure 4 Bank C schematic 5 HI

38、 BANK D LO CH 1 72 40 HI LO CH 2 8 71 HI LO CH 3 39 7 HI LO CH 4 70 38 HI LO CH 5 6 69 LO HI 65 2 7111-S HI LO CH 6 37 5 HI LO CH 7 68 36 HI LO CH 8 4 67 HI LO CH 9 35 3 HI LO CH 10 66 34 LO HI 65 2 Figure 4 Bank D schematic Models 7011-C and 7011-S Quad 1 10 Multiplexer Cards Refer to the following

39、 pages for information on the Model 7011-C that is used as part of the Model 7111-S-26589. 7011SPECIFICATIONS MOD”, IOU-S Quad 1x10 Multiplew with SaewT.smh the Model 7011-S and the Model 7011-C. The Model 7011-S assembly consists of a screw terminal connector card and a relay card. External test ci

40、rcuits are wired directly to the saew terminals of the connector card. Also available from Keithley is the Model 7011-ST. This is an extra screw terminal connector card. With an extra connector card, you can wire a second test system without disturbing the wiring conuration of the first test system.

41、 The Model 7011-C assembly consists of a multi-pin bmss te rmination) connector card and the relay card. Fxtemal test circuit connedions to the multiplexer are made via the 96-pin male DIN connector on the con- nector card. Keithley offers a variety of optional acces- sories that can be used to make

42、 conneciiom to the connector card (see paragraph 1.9). The rest of Setion 1 is arranged in the following man- ner: 1.2 Features 1.3 warranty information 1.4 Manual addenda 1.5 Safety symbols and terms 1.6 Specifications 1.7 Unpacking and inspection 1.8 Repacking for shipment 1.9 Optional accessories

43、 1.2 Features The Model 7011 is a low voltage, two-pole, quad, 1 x 10 multiplexer card. Some of the key features in quad 1 x 10 con+ra- tion, dual 1 x 20 configuration and single 1 x 40 cotiguration. The significance of the backplane jumpers is also covered here. Typical multiplex switching schemes:

44、 Explains some of the basic ways a multiplexer cam be used to source or measure. Covers single-ended switching, differential (floating) switching and sensing. 24 System expansion: Discusses the various config- urations that are possible by using multiple cards. 2.2 Basic multiplexer configurations A

45、 simplified schematic of the Model 7011 multiplexer is shown in Figure 2-l. It is organized as four 1 x 10 multiplexer banks. Each bank has 10 inputs and one output. Two-pole switching is provided for each multi- plexer input, with HI and LO switched. Two or more banks can be jumpered together to ex

46、pand multiplexer inputs, and backplane jumpers provide bank connec- tions to a second card installed in Model 7001 main- frame. 2-l Bank to Bank Jumpers Backplane Jumpers (to 7001 Analog Backplane) Figure 2-l Mode/ 707 7 simplified schematic 2.2.1 Multiplexer bank-to-bank jumpers Jumpers are install

47、ed on the connector card to connect multiplexer banks together to form a multiplexer of 1 x 40. Each jum: :- set connects two adjacent banks to- gether. These j;-nper sets are included with the Model 7011. The bank-to-bank jumpers allow you to configure the multiplexer card in a variety of ways. Typ

48、ical multi- plexer coniigwations include: l Four 1 x 10 rxtitiplexers; no jumpers installed (Fig- ure 2-2). l Two 1 x 20 multiplexers; Bank A jumpered to Bank B, Bank C jumpered to Bank D (Figure 2-3). l One 1 x 40 multiplexer; all bank-to-bank jumpers installed (Figure 2-4). Other combinations are

49、possible, including multiplex- ers of various sizes (in multiples of 10 channels). For example, you could install jumpers to configure the card as one 1 x 30 and one 1 x 10 multiplexer. Refer to Section 3 for information on installing bank-to- bank jumpers. 2-2 * 2 Bank A 12 10. , Bank B Bank C 1. . Bank D ,I i -z+O”,utD 10, , Figure 2-2 Four 1 x 10 multiplexer configuration (jumpers not installed) 1. ,x2 . Bank 6 . 109 ,x2 l 1. ,z2 . Ban