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Keithley 2001-TCSCAN Скачать руководство пользователя страница 15

Model 2001-TCSCAN Scanner Card User's Manual

Section 2: Card connectors and installation

2001-TCSCAN-900-01 Rev. A / April 2018

2-7

Typical connecting schemes

This section discusses typical connections for the scanner card.

Thermocouple connections

The figure below shows typical thermocouple connections. Note that thermocouples are connected to
channels 2-10, and the output connections are taken from the OUT A terminals.

Figure 5: Typical connections for thermocouple scanning

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Содержание 2001-TCSCAN

Страница 1: ...User s Manual 2001 TCSCAN 900 01 Rev A April 2018 P2001 TCSCAN 900 01A 2001 TCSCAN 900 01A tek com keithley Model 2001 TCSCAN Scanner Card for use with the DMM6500...

Страница 2: ...uct names are trademarks or registered trademarks of Keithley Instruments LLC Other brand names are trademarks or registered trademarks of their respective holders The Lua 5 0 software and associated...

Страница 3: ...tions 2 7 Voltage connections 2 8 Resistance connections 2 9 Card installation and removal 2 11 Scanner card installation 2 12 Output connections to multimeter 2 14 Scanner card removal 2 15 Operation...

Страница 4: ...Table of contents Model 2001 TCSCAN Scanner Card User s Manual Magnetic fields 3 16 Electromagnetic interference EMI 3 16 Ground loops 3 17 Keeping connectors clean 3 18...

Страница 5: ...d to mains These instruments will be marked as category II or higher Unless explicitly allowed in the specifications operating manual and instrument labels do not connect any instrument to mains Exerc...

Страница 6: ...lains hazards that could damage the instrument Such damage may invalidate the warranty The CAUTION heading with the symbol in the user documentation explains hazards that could result in moderate or m...

Страница 7: ...d designed to be installed in the DMM6500 6 Digit Graphical Sampling Multimeter Features of the card include Built in reference junction channel 1 Low contact potential and offset current Input connec...

Страница 8: ...e original packing carton After removing the card from its anti static bag inspect it for any obvious signs of physical damage Report any such damage to the shipping agent immediately Factory service...

Страница 9: ...in high impedance isolation between channels avoid contamination from foreign materials as body oils when handling the scanner card Contamination can substantially lower leakage resistances degrading...

Страница 10: ...l injury or death Do not attempt to perform this procedure unless qualified to do so Failure to recognize and observe normal safety precautions could result in personal injury or death Do not exceed t...

Страница 11: ...card has nine input channels and two output channels Channel 1 is the reference junction for thermocouple temperature measurements Four pole paired channels are as follows Channels 2 and 7 Channels 3...

Страница 12: ...e provided for each of the nine channels on the card Channels 5 and 10 have current limiting resistors installed Path resistance for these two channels is approximately 240 OUT A HI and LO output conn...

Страница 13: ...output connections Connect the red leads to the output OUT A and OUT B HI terminals and connect the black leads to the output LO terminals See the following figure for details Dress the output test le...

Страница 14: ...oximately 7 93 mm 5 16 in of insulation from the end of each wire 3 Twist the strands of the wire together 22 AWG stranded wire is recommended for scanner card connections 4 Loosen the screw terminal...

Страница 15: ...connecting schemes This section discusses typical connections for the scanner card Thermocouple connections The figure below shows typical thermocouple connections Note that thermocouples are connecte...

Страница 16: ...onnections The following figure shows typical connections for voltage measurements Note that up to nine voltage sources can be switched with this configuration This basic configuration can be for the...

Страница 17: ...shows typical 2 pole resistor test connections The 2 pole resistance configuration can be used to test up to seven devices under test DUTs Channels 5 and 10 should not be used to switch resistance me...

Страница 18: ...April 2018 Four pole connections The following figure shows a typical 4 pole resistance connection This configuration can be used with channel pairs 2 to 5 and 7 to 10 in order to scan Four wire resis...

Страница 19: ...er is removed from all external circuitry If a card slot is unused you must install slot covers to prevent personal contact with high voltage circuits Failure to install slot covers could result in pe...

Страница 20: ...o all instruments including the multimeter and disconnect all power cords Make sure all power is removed and any stored energy in external circuitry is discharged To prevent contamination of the 2001...

Страница 21: ...rear panel 3 Remove the cover plate from the Accessory Card Slot on the rear panel of the multimeter To do so move the tab on the cover plate up and out 4 Slide the card edges into the guide rails ins...

Страница 22: ...g your scanner card connect the scanner card output leads to the rear panel of the DMM Be sure to select the rear inputs with the DMM front panel TERMINAL switch when using the scanner card To make ou...

Страница 23: ...ections for 4 pole operation Figure 11 Four pole output connections Scanner card removal Turn off power to all instrumentation including the multimeter and disconnect all line cords Make sure all powe...

Страница 24: ...e DMM6500 User s and Reference Manuals for the necessary information Signal limitation To prevent overheating or damage to the relays never exceed the following maximum input signal levels DC signals...

Страница 25: ...ARD n IDN is a SCPI command that will determine whether scanner card is installed The TSP command equivalent is print slot n idn The response to this query indicates whether a scanner card is present...

Страница 26: ...open or close it Selecting the channel box again will open the channel and the connection icon will move to the open state Figure 12 DMM6500 channel list 2 When closing a channel select the measuremen...

Страница 27: ...commands are channel setdmm 1 dmm ATTR_MEAS_FUNCTION dmm FUNC_DC_VOLTAGE channel setdmm 2 dmm ATTR_MEAS_FUNCTION dmm FUNC_AC_VOLTAGE channel setdmm 3 dmm ATTR_MEAS_FUNCTION dmm FUNC_RESISTANCE To use...

Страница 28: ...nels tab on the swipe screen you can skip this step Figure 15 Add group of channels 2 From the 2001 TCSCAN channel list select the box next to the channel number to select your channels 3 Select OK to...

Страница 29: ...can swipe screen select Start Scan From the trigger mode indicator on the home screen select Initiate Scan You can pause the scan from scan swipe screen on the front panel Select Pause Scan To continu...

Страница 30: ...er automatic scanning or by manually closing specific channels You can use thermocouple types B E J K N R S and T to make temperature measurements with your 2001 TCSCAN The following procedure is for...

Страница 31: ...the scan Below are equivalent TSP commands to set up your 2001 TCSCAN for temperature measurements on the DMM6500 reset Puts the instrument in a known state channel setdmm 1 10 dmm ATTR_MEAS_FUNCTION...

Страница 32: ...sistance measurements The 2001 TCSCAN scanner card provides the switching function The resistance measurements are made by the DMM6500 Since only 2 pole switching is required for this application one...

Страница 33: ...MM6500 and your 2001 TCSCAN reset Puts the DMM in a known state channel setdmm 2 4 6 9 dmm ATTR_MEAS_FUNCTION dmm FUNC_RESISTANCE Sets the channels for 2 wire measurements channel setdmm 2 4 6 9 dmm A...

Страница 34: ...wn in the figure below Sense leads are routed from the DMM through the scanner to the resistor under test The extra set of sense leads minimizes the effects of voltage drops across the test leads and...

Страница 35: ...SCAN CRE 2 5 Creates the scan TRAC CLE Clears the buffer INIT Initiates the scan Below are equivalent TSP commands to set a 4 wire resistance test using the DMM6500 and your 2001 TCSCAN reset Puts the...

Страница 36: ...ay require 4 pole switching for only two resistors while the remaining resistors can be tested using conventional 2 pole switching The figure below shows a test configuration using mixed 2 and 4 pole...

Страница 37: ...dmm ATTR_MEAS_FUNCTION dmm FUNC_4W_RESISTANCE Sets the channels for 4 wire measurements channel setdmm 2 dmm ATTR_MEAS_OFFCOMP_ENABLE dmm OCOMP_ON Turns on offset compensation channel setdmm 2 dmm ATT...

Страница 38: ...an infinite path isolation values for these devices Figure 23 Path isolation resistance RDUT source resistance of the DUT EDUT source EMF of the DUT RPATH path isolation of resistance RIN input resist...

Страница 39: ...can generate significant fields These effects can be minimized by using twisted pairs which will cancel out most of the resulting fields Electromagnetic interference EMI The electromagnetic interfere...

Страница 40: ...cted to other instrumentation with more than one signal return path such as power line ground As shown in the following figure the resulting ground loop causes current to flow through the instrumentat...

Страница 41: ...handled properly If the connector insulation becomes contaminated insulation resistance will be substantially reduced affecting high impedance measurement paths Oils and salts from the skin can contam...

Страница 42: ...names are the property of Keithley Instruments All other trademarks and trade names are the property of their respective companies Keithley Instruments Corporate Headquarters 28775 Aurora Road Clevela...

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