Keithley 2000-Scan, User Manual

Page 1: ...User s Manual 2000 SCAN 900 01 Rev A April 2018 P2000 SCAN 900 01A 2000 SCAN 900 01A tek com keithley Model 2000 SCAN Scanner Card for use with the DMM6500...

Page 2: ...oduct 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 associate...

Page 3: ...ance connections 2 8 Card installation and removal 2 10 Scanner card installation 2 11 Output connections to the multimeter 2 13 Scanner card removal 2 14 Operation 3 1 Introduction 3 1 Signal limitat...

Page 4: ...Table of contents Model 2000 SCAN Scanner Card User s Manual Path isolation 3 17 Magnetic fields 3 18 Electromagnetic interference EMI 3 18 Ground loops 3 19 Keeping connectors clean 3 20...

Page 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...

Page 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...

Page 7: ...ner card with the 2700 2701 or 2750 please see the 2000 SCAN Scanner Card Instruction Manual Features Features of the scanner card include Ten channels of 2 pole relay input Configurable channels for...

Page 8: ...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 To...

Page 9: ...e isolation between channels avoid contamination from foreign materials as body oils when handling the scanner card Contamination can substantially lower leakage resistances degrading card performance...

Page 10: ...personal injury or death Do not exceed the maximum specifications for the 2000 SCAN Scanner Card Refer to the specifications provided in the data sheet Failure to recognize and observe normal safety...

Page 11: ...Model 2000 SCAN Scanner Card User s Manual Section 2 Card connections and installation 2000 SCAN 900 01 Rev A April 2018 2 3 Figure 1 Simplified schematic...

Page 12: ...de CH 1 to 10 channels 1 to 10 HI and LO input terminals provided for each of the 10 channels on the card OUT A HI and LO output connections for all 10 channels in 2 pole mode or channels 1 to 5 in 4...

Page 13: ...s to your DMM6500 1 Connect the red leads to the output OUT A and OUT B HI terminals 2 Connect the black leads to the output LO terminals See the following figure for details 3 Dress the output test l...

Page 14: ...wist the strands of the wire together 22 AWG stranded wire is recommended for scanner card connections 4 Loosen the screw terminal 5 Insert the wire into the access hole 6 While holding the wire in pl...

Page 15: ...the scanner card Voltage connections The figure below shows typical connections for voltage measurements Note that all channels are used in the 2 pole mode and that up to 10 voltage sources can be sw...

Page 16: ...00 SCAN 900 01 Rev A April 2018 Resistance connections Making 2 pole connections The following figure shows typical 2 pole resistor connections The 2 pole resistance configuration can be used to test...

Page 17: ...A April 2018 2 9 Making 4 pole connections Typical 4 pole resistance connections are shown in the following figure This general configuration can be used with all channels to scan 4 wire resistance m...

Page 18: ...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 persona...

Page 19: ...to 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 2000...

Page 20: ...r 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 inside...

Page 21: ...Output connections to the multimeter After installing the 2000 SCAN connect the scanner card output leads to the multimeter rear panel jacks To connect the output leads for 2 pole connection 1 Connec...

Page 22: ...g figure Figure 11 4 pole output connections Scanner card removal Turn off power to all instrumentation including the multimeter and disconnect all line cords Make sure all power is removed and any st...

Page 23: ...familiar with the operation of the DMM6500 multimeter See the DMM6500 User s and Reference Manuals for the necessary information Signal limitation To prevent damage to the 2000 SCAN do not exceed the...

Page 24: ...RD 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 a...

Page 25: ...en 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 3 When closing a channel select the measurement...

Page 26: ...mmands 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 th...

Page 27: ...ls tab on the swipe screen you can skip this step Figure 15 Add group of channels 2 From the 2000 SCAN channel list select the box next to the channel number to select your channels 3 Select OK to pro...

Page 28: ...opened or closed when the scan was stopped To stop a scan from the front panel Select Abort Scan from the Scan menu the Scan swipe screen or the trigger mode indicator on the home screen On the Scan m...

Page 29: ...ve RTD options Select the appropriate RTD type 5 Next to Unit use the selection button to choose between Celsius Fahrenheit or Kelvin 6 Set the NPLC to 1 7 Select the SCAN tab 8 Set the scan count 9 S...

Page 30: ...ance measurements The following figure shows an equivalent circuit The 2000 SCAN provides the switching function while the resistance measurements are made by the DMM6500 Since only 2 pole switching i...

Page 31: ...MM6500 and your 2000 SCAN reset Puts the DMM in a known state channel setdmm 1 dmm ATTR_MEAS_FUNCTION dmm FUNC_RESISTANCE Sets the channels for 2 wire measurements channel setdmm 1 10 dmm ATTR_MEAS_RA...

Page 32: ...below Separate sense leads from the DMM6500 are routed through the scanner card to the DUT The extra set of sense leads minimizes the effects of voltage drops across the test leads reducing measureme...

Page 33: ...COUN SCAN 1 Sets the scan count TRAC CLE Clears the buffer INIT Initiates the scan Below is the TSP equivalent to set up a 4 wire resistance test using the DMM6500 and your 2000 SCAN reset Puts the DM...

Page 34: ...if you require 4 pole switching for only two resistors The remaining resistors can be tested using conventional 2 pole switching The figure below shows a test configuration using mixed 2 and 4 pole sw...

Page 35: ...5 8 10 Sets the channels to 2 wire measurement RES RANG 100e3 3 5 8 10 Sets the 2 wire range to 100 k ROUT SCAN CRE 1 5 8 10 Creates the scan ROUT SCAN COUN SCAN 1 Sets the scan count TRAC CLE Clears...

Page 36: ...There are no dedicated channels or channel routing to measure current on the scanner card Shunt resistors can be installed for channels 1 and 6 to allow for indirect current measurements The following...

Page 37: ...rents up to 15 mA without exceeding the power rating of the resistor For larger currents decrease the shunt value Conversely the shunt value can be increased for smaller currents Do not exceed the max...

Page 38: ...rrent connections The figure below shows typical connections for measuring currents using the 2000 SCAN with current shunts installed As noted only channels 1 and 6 have current shunts installed and t...

Page 39: ...for these devices Figure 25 Path isolation resistance RDUT source resistance of the DUT EDUT source EMF of the DUT RPATH path isolation of resistance RIN input resistance of the multimeter Path isolat...

Page 40: ...an 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 interferenc...

Page 41: ...ed 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 instrumentatio...

Page 42: ...ndled 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 contamin...

Page 43: ...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...