Tektronix Keithley 2601B-PULSE

Tektronix Keithley 2601B-PULSE

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Model 2601B-PULSE System SourceMeter Instrument Reference Manual Section 7: Theory of operation

2601B-PULSE-901-01A April 2020 7-19

Figure 117: Considerations when sourcing current and sinking power

Basic circuit configurations

The following topics describe the source, measure, and contact check circuit configurations when the

pulser is disabled.

Table of Contents

Model 2601B-PULSE System SourceMeter Instrument Reference Manual1
Safety precautions4
Table of contents6
1 Introduction22
- Welcome22
- Extended warranty22
- Contact information22
- Customer documentation23
- Product software and drivers23
- Capabilities and features24
- Power and environmental ratings25
2 Installation26
- Introduction26
- 2601B-PULSE weights and dimensions26
  - Preparing the instrument for rack mounting30
  - 2601B-P-INT dimensions31
- Installing the 2601B-P-INT31
- Cooling vents33
- Turning the instrument on and off34
- Placing a 2601B-PULSE in standby35
- Warmup period35
- Line frequency configuration36
- Remote communications interfaces36
- Using the interlock67
  - Interlock operation68
- System information71
3 Instrument description72
- Controls, indicators, and connectors72
  - Front panel72
  - Rear panel76
- Menu overview78
- Beeper84
- Displayed error and status messages84
- Display operations85
- USB storage overview99
  - Connecting the USB flash drive99
  - File system navigation100
4 Sourcing and measuring101
- Operation overview101
- DUT test connections106
- DUT connection settings125
- Basic source-measure procedure130
- Operation considerations for the ADC141
  - Autozero141
    - Front-panel autozero141
    - Remote command autozero142
  - NPLC caching142
- Triggering in local mode142
- Configuring trigger attributes in local mode144
  - Front-panel triggering example144
- Configuring for measure-only tests using the MODE key145
- Voltmeter and ammeter measurements145
- Ohms measurements146
- Power measurements149
  - Basic power measurement procedure150
  - Power measurements using the remote interface150
    - Remote power reading command150
    - Power measurement programming example151
- Saved setups151
- Range154
- Digits159
  - Setting display resolution from the front panel159
  - Setting display resolution from a remote interface159
    - Digits commands159
    - Digits programming example159
- Speed when the pulser is disabled160
  - Setting speed160
    - Front-panel speed configuration160
    - Remote speed programming160
      - Speed command160
      - Speed programming example161
- Sweep operation161
- Relative offset175
  - Front panel relative offset175
    - Enabling and disabling relative offset175
    - Defining a relative offset value176
  - Remote relative offset programming176
    - Relative offset commands176
    - Relative offset programming example176
- Filters177
- High-capacitance mode180
  - Understanding high-capacitance mode180
    - Understanding source settling times181
    - Adjusting the voltage source181
      - Understanding the capacitor182
      - Charging the capacitor and making readings182
  - Enabling high-capacitance mode182
5 Reading buffers185
- Overview185
- Front-panel reading buffer control185
- Remote reading buffer programming190
6 Triggering199
- Triggering199
- Remote triggering overview199
  - Using the trigger model201
- SMU event detectors206
  - Clearing SMU event detectors206
  - Using the TRIG key to trigger a sweep206
- Using trigger events to start actions on trigger objects208
  - Action overruns208
- Digital I/O port and TSP-Link synchronization lines209
- Timers211
- Event blenders217
- LAN triggering overview218
- Command interface triggering220
- Trigger generator221
- Manual triggering221
- Interactive triggering221
- Hardware trigger modes226
- Understanding synchronous triggering modes230
- Digital I/O234
7 Theory of operation239
- Analog-to-digital converters239
- Source-measure concepts239
- Measurement settling time considerations264
  - Programming example for controlling settling time delay265
- Effects of load on current source settling time265
- Creating pulses with the 2601B-PULSE SMU266
  - Pulse rise and fall times266
    - Range and pulse settling267
    - SMU load and operating mode267
  - SMU pulse width268
8 Maintenance269
- Introduction269
- Displaying the serial number269
- Line fuse replacement270
- Front-panel tests271
  - Keys test271
  - Display patterns test272
- Upgrading the firmware273
  - Using TSB to upgrade the firmware274
9 Introduction to TSP operation275
- Introduction to TSP operation275
- About TSP commands277
- Factory scripts293
10 Instrument programming297
- Fundamentals of scripting for TSP297
- Fundamentals of programming for TSP309
- Test Script Builder326
- Password management330
- Advanced scripting for TSP332
- TSP-Link system expansion interface341
- TSP-Net354
11 TSP command reference359
- TSP command programming notes359
- Using the TSP command reference362
- TSP commands366
12 Troubleshooting guide753
- Introduction753
- Error levels753
- Effects of errors on scripts753
- Retrieving errors754
- Error summary list754
13 Calibration759
- Calibration759
- Adjustment777
14 Common commands805
- Command summary805
- Script command equivalents806
- Command reference807
15 Status model809
- Overview809
- Clearing registers821
- Programming enable and transition registers822
- Reading registers823
- Status byte and service request (SRQ)823
- Status register sets828
- TSP-Link system status833
  - Status model configuration example833
    - Status configuration (enable) commands834
16 Display character codes836
- 2601B-PULSE display character codes836
17 Frequently asked questions841
- How do I display the instrument's serial number?841
- How do I optimize performance?842
  - Disabling autozero to increase speed842
- How do I upgrade the firmware?842
- How do I use the digital I/O port?843
- How do I trigger other instruments?843
- How do I generate a GPIB service request?844
- How do I store measurements in nonvolatile memory?845
- When should I change the output-off state?846
- How do I make contact check measurements?846
- How can I change the line frequency or voltage?847
- Where can I get the LabVIEW driver?847
- What should I do if I get an 802 interlock error?847
- Why is the reading value 9.91e37?847
18 Next steps848
- Additional 2601B-PULSE information848
Contact information849

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