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Tektronix Keithley SourceMeter 2470

Tektronix Keithley SourceMeter 2470
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Table of contents
2470 High Voltage SourceMeter Instrument Reference
Manual
Safety shielding ....................................................................................................................... 5-12
Noise and chassis ground .................................................................................................. 5-12
Floating the 2470 ............................................................................................................... 5-13
Guarding ............................................................................................................................ 5-15
Using guard with a test fixture ................................................................................................. 5-16
Guard circuit drawing .............................................................................................................. 5-16
Sink operation .................................................................................................................... 5-17
Battery charge and discharge ............................................................................................ 5-18
Measurement settling time considerations ......................................................................... 5-19
Overtemperature protection ............................................................................................... 5-20
Current breakdown protection ............................................................................................ 5-20
Calculating accuracy .......................................................................................................... 5-21
Calculating source or measure accuracy ................................................................................ 5-21
Calculate accuracy of a resistance measurement made by sourcing I and measuring V ........ 5-22
Offset-compensated ohm calculations ............................................................................... 5-23
Power calculations ............................................................................................................. 5-23
High-capacitance operation ............................................................................................... 5-24
Enabling the high capacitance feature .................................................................................... 5-24
Filtering measurement data ............................................................................................... 5-25
Repeating average filter .......................................................................................................... 5-25
Moving average filter ............................................................................................................... 5-26
Setting up the averaging filter .................................................................................................. 5-26
Order of operations ............................................................................................................ 5-27
Reset default values ........................................................................................................... 5-28
Default values ......................................................................................................................... 5-28
Reading buffers .......................................................................................................... 6-1
Introduction to reading buffers ............................................................................................. 6-1
Getting started with buffers .................................................................................................. 6-2
Types of reading buffers ........................................................................................................... 6-2
Effects of reset and power cycle on buffers............................................................................... 6-2
Buffer fill status .......................................................................................................................... 6-2
Timestamps ............................................................................................................................... 6-4
Creating buffers .................................................................................................................... 6-5
Setting reading buffer options .............................................................................................. 6-9
Setting reading buffer capacity ................................................................................................ 6-10
Setting the fill mode ................................................................................................................. 6-12
Selecting a buffer ............................................................................................................... 6-14
Using the front panel to store readings in the selected buffer ........................................... 6-17
Viewing and saving buffer content ..................................................................................... 6-18
Clearing buffers .................................................................................................................. 6-24
Deleting buffers .................................................................................................................. 6-25
Remote buffer operation .................................................................................................... 6-25

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