Tektronix Keithley 2231A-30-3 Performance Verification Manual
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Tektronix Keithley 2231A-30-3 Performance Verification Manual

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www.keithley.com
Model 2231A-30-3
Triple-Channel DC Power Supply
Performance Verification
077-1027-00/ July 2014
*P077102700*
077-1027-00
A T ektr o nix Company

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Summary of Contents for Tektronix Keithley 2231A-30-3

  • Page 1 www.keithley.com Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification 077-1027-00/ July 2014 *P077102700* 077-1027-00 A T ektr o nix Company...
  • Page 2 Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification © 2014, Keithley Instruments. Cleveland, Ohio, U.S.A. All rights reserved. Any unauthorized reproduction, photocopy, or use of the information herein, in whole or in part, without the prior written approval of Keithley Instruments. is strictly prohibited. All Keithley Instruments product names are trademarks or registered trademarks of Keithley Instruments.
  • Page 4 Safety precautions The following safety precautions should be observed before using this product and any associated instrumentation. Although some instruments and accessories would normally be used with nonhazardous voltages, there are situations where hazardous conditions may be present. This product is intended for use by qualified personnel who recognize shock hazards and are familiar with the safety precautions required to avoid possible injury.
  • Page 5 impaired. Do not exceed the maximum signal levels of the instruments and accessories, as defined in the specifications and operating information, and as shown on the instrument or test fixture panels, or switching card. When fuses are used in a product, replace with the same type and rating for continued protection against fire hazard. Chassis connections must only be used as shield connections for measuring circuits, NOT as protective earth (safety ground) connections.

  • Page 6: Table Of Contents

    Table of Contents Introduction ......................1-1 Welcome ..........................1-1 Extended warranty ....................... 1-1 Contact information ......................1-1 Specifications ......................2-1 Performance Verification ..................3-1 Introduction .......................... 3-1 Test Record .......................... 3-2 Performance Verification Procedures ................3-10 Equipment Required ....................... 3-10 Self Test ..........................

  • Page 8: Introduction

    Section 1 Introduction In this section: Welcome .................. 1-1 Extended warranty..............1-1 Contact information ..............1-1 Welcome Thank you for using a Keithley Instruments product. The Model 2231A-30-3 Triple-Channel Programmable DC Power Supply is a flexible DC source designed to power a wide range of applications.

  • Page 10: Specifications

    Section 2 Specifications This section contains specifications for the Series 2200 Multichannel Programmable DC Power Supplies. All specifications are guaranteed unless noted as "typical." Typical specifications are provided for your convenience but are not guaranteed. Specifications that are marked with the symbol are checked in Performance Verification.
  • Page 11 Section 2: Specifications Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification Table 2: Series 2231A Triple-Channel specifications for Channel 3 Parameter Description Current Limit, nominal Defined by the Constant Current setting. Changeover is automatic. Voltage Temperature Coefficient, ± (0.03% of setting) per °C outside of the 25 °C ±5 °C standard range. typical Constant Current Operation, The instrument may be set to be a constant current over a range of voltages.
  • Page 12 Model 2231A-30-3 Triple-channel DC Power Supply Performance Verification S ection 2: Specifications Table 3: Model 2231A-30-3 combined channel characteristics Characteristic Description Combined Channel Characteristics, The instrument can be configured to provide functionality on Channels 1 and 2 nominal together. Series Combinations, nominal Delivers up to 60 V when Channel1 and Channel 2 are wired in series.
  • Page 13 Section 2: Specifications Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification abrasive or chemical cleaning agents. Caution: Avoid getting moisture inside the instrument during external cleaning. Use only enough cleaning solution to dampen the cloth or swab. Table 6: Common characteristics Item Description Isolation Voltage, Output to Chassis...
  • Page 14 Model 2231A-30-3 Triple-channel DC Power Supply Performance Verification S ection 2: Specifications Table 9: Electromagnetic Compatibility (EMC) — Measurement, laboratory, and control product family Item 2231A-30-3 Regional Certifications, Classifications, and Standards List European Union EC Council EMC Directive 2004/108/EC Demonstrated using: EN 61326-1:2006 Electrical Equipment for Measurement, Control, and Laboratory 1, 2 Emissions...

  • Page 16: Performance Verification

    Section 3 Performance Verification In this section: Introduction ................3-1 Test Record................3-2 Performance Verification Procedures ........3-10 Introduction This section contains performance verification procedures for the specifications symbol. Additional √ test equipment is required to complete the verification procedures. Print the test record on the following pages, and use it to record the performance test results for your power supply.

  • Page 17: Test Record

    Section 3: Performance Verification Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification Use properly rated load wires. All load wires must be heavy enough not to overheat when carrying the maximum short-circuit output current of the power supply. If there is more than one load, then any pair of load wires must be capable of safely carrying the full-rated short-circuit output current of the power supply.
  • Page 18 Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification Section 3: Performance Verification Table 10: DC voltage accuracy Instrument test voltage DUT voltage Test current Measured Channel 1 0.00000V 0.5A 0.00000V ----------- 0.02000V 7.50000V 0.5A 7.47550V ----------- 7.52450V 15.00000V 0.5A 14.9710V ----------- 15.02900V 22.50000V...
  • Page 19 Section 3: Performance Verification Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification 100% 5. 00000V 2 .5A 4.97700V ---------- 5.02300V Table 11: DC voltage readback accuracy Instrument test Measured Voltage Absolute Maximum voltage DUT voltage Test current voltage readout difference Channel 1 0.00000V 0.5A...
  • Page 20 Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification Section 3: Performance Verification 100% 5.00000V 2.5A ------------ ------------ ------------- 0.02300V Table 12: DC voltage line regulation Instrument Min line Max line Nom line Nom-Min Max-Nom Largest Max value ----------- ------------ ------------ ------------ ------------ ------------...
  • Page 21 Section 3: Performance Verification Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification Instrument test current Test voltage DUT current Measured current Channel 2 0.0000A 0.000000A ------------ 0.01000A 0.7500A 0.73850A ------------ 0.76150A 1.5000A 1.48700A ------------ 1.51300A 2.2500A 2.2355A ------------ 2.2645A 100% 3.0000A 2.9840A ------------...
  • Page 22 Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification Section 3: Performance Verification 2.25A ------------ ------------ ------------ 0.0145A 100% 3.0A ------------ ------------ ------------ 0.016A Instrument test Measured Absolute Maximum voltage Test current current Current readout difference difference Channel 2 ------------ ------------ ------------ 0.0100A 0.75A...
  • Page 23 Section 3: Performance Verification Model 2231A -30 -3 Triple - Channel DC Power Supply Performance Verification Table 17: DC current load regulation Means @ Means @ Means @ Maximum Instrument min volts ref volts Max volts Ref-Min Max-Ref Largest difference Channel 1 -------- -------...
  • Page 24 Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification Section 3: Performance Verification Table 20: Current noise at 20MHz Current test Measured Maximum Instrument load R1 Channel 1 1Ω ---------- Channel 2 1Ω ---------- Channel 3 1Ω ---------- 077102700/ July 2014...

  • Page 25: Performance Verification Procedures

    Section 3: Performance Verification Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification Performance Verification Procedures The following conditions must be met before performing these procedures: 1. The device under test (DUT) and all test equipment must have been operating continuously for 20 minutes in an environment that meets the operating range specifications for temperature and humidity.
  • Page 26 Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification Section 3: Performance Verification Table 21: Test equipment Number Item Minimum requirements Example Connectors Connectors for hookup wire assemblies and test resistors, item numbers 5, 6, 9, 10, and 11. (Qty. 6) #10 fork lugs similar to Tyco part •...

  • Page 27: Self Test

    Oscilloscope 20 MHz bandwidth-limited oscilloscope at 1 Tektronix DPO3012 mV/division. Oscilloscope probe Low capacitance 1 MΩ/10 MΩ 1X/10X 6 Tektronix P2220, 1X probe MHz/200MHz probe. Oscilloscope probe Low capacitance 10 MΩ 500 MHz probe Tektronix P6139A, 10X Coaxial cable 50 Ω BNC, male-to-male.
  • Page 28 Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification Section 3: Performance Verification 4. If the EEPROM is damaged or the latest operation data in the EEPROM is missing, the display appears as follows: 5. If the calibration data in the EEPROM is missing, the display appears as follows: 6.

  • Page 29: Check Dc Voltage Setting Accuracy And Voltage Readback Accuracy

    Section 3: Performance Verification Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification Check DC Voltage Setting Accuracy and Voltage Readback Accuracy Equipment required AC power source High current hookup wire (boldline connections) Electronic load Low current hookup wire (fine line connections) DC voltmeter For each channel sequentially.

  • Page 30: Check Dc Voltage Line Regulation

    Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification Section 3: Performance Verification An alternative solution is to use fork lugs for both connections at the DUT. 2. Set the voltmeter as follows: a. Set to measure DC volts. b. Set to auto range. c.
  • Page 31 Section 3: Performance Verification Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification 198V 2. Set the voltmeter as follows: a. Set to measure DC volts. b. Set to auto range. c. Verify that the math mx+b function is disabled (shift+DCV), assuring that volts are being read. 3.

  • Page 32: Check Dc Voltage Load Regulation

    Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification Section 3: Performance Verification 9. Enter the voltmeter reading in the Max column of the table for checking DC Voltage Line Regulation for the channel under test. (See Table 18 ) 10. Change the AC power source output to match the voltage selector switch setting of the DUT. DUT voltage selector AC power source voltage switch...

  • Page 33: Check Dc Current And Dc Current Readback Accuracy

    Section 3: Performance Verification Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification 6. Enter the voltmeter reading in the minimum load column of the table for checking DC Voltage Load Regulation for the channel under test. 7. Increase the electronic load to the reference load test current value. Channel Test current Channel 1...
  • Page 34 Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification Section 3: Performance Verification For each channel sequentially. 1. Set up the equipment as shown. Ensure the warm-up criteria have been met, as described in the Performance Verification Conditions topic. Figure 2: DC current accuracy and regulation test setup 077102700/ July 2014 3-19...

  • Page 35: Check Dc Current Line Regulation

    Section 3: Performance Verification Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification 2. Set the voltmeter as follows: a. Set to measure DC volts. b. Set to auto range. c. Set to show amps (instead of volts) by multiplying the voltmeter result by 20. Press Shift +DCV (mX+B).
  • Page 36 Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification Section 3: Performance Verification DUT voltage selector AC power source voltage switch 198V Ensure the warm-up criteria have been met, as described in the Performance Verification Conditions topic. 2. Set the voltmeter as follows: a.
  • Page 37 Section 3: Performance Verification Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification DUT voltage selector AC power source voltage switch 132V 253V 9. Enter the voltmeter reading in the Max column for the channel under test. (See Table 22.) 10. Change the AC power source output to the voltage specified in the following table. DUT voltage selector AC power source voltage switch...

  • Page 38: Check Dc Current Load Regulation

    Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification Section 3: Performance Verification Check DC Current Load Regulation This verification procedure uses the same test setup as the previous procedure. Ensure the warm-up criteria have been met, as described in the Performance Verification Conditions topic.

  • Page 39: Check Voltage Noise (7 Mhz)

    Section 3: Performance Verification Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification Channel Reference test voltage Channel 1 15.0V Channel 2 15.0V Channel 3 2.5V 8. Enter the voltmeter reading into the table for DC current load regulation at the reference test voltage for the channel under test.
  • Page 40 Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification Section 3: Performance Verification Some AC power sources create large amounts of high-frequency noise on the power line that the instrument may not fully reject. Noise directly on the mains is typically better controlled. Use the same mains outlet for both the DUT and test oscilloscope to avoid ground loops which may cause noise.

  • Page 41: Check Voltage Noise (20 Mhz)

    Section 3: Performance Verification Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification 5. Set the oscilloscope as follows: a. 1 mV/division b. 1 MΩ input resistance c. 20 MHz bandwidth limit d. AC coupled e. Line trigger f. 2 ms/div g.
  • Page 42 Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification Section 3: Performance Verification For each channel sequentially. 1. Plug the DUT into your local line power from the mains. 2. Plug the test oscilloscope into the same mains outlet as the DUT. Some AC Power Sources create large amounts of high-frequency noise on the power line that the instrument may not fully reject.

  • Page 43: Check Current Noise

    Section 3: Performance Verification Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification 5. Set the oscilloscope as follows: a. 1 mV/division b. 1 MΩ input resistance c. 20 MHz bandwidth limit d. AC coupled e. Line trigger f. 2 ms/div g.
  • Page 44 Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification Section 3: Performance Verification 3. Power on the DUT and test oscilloscope. Ensure the warm-up criteria have been met, as described in the Performance Verification Conditions topic. 4. Set up the equipment as shown. Figure 5: 20 MHz current noise test setup 5.
  • Page 45 Section 3: Performance Verification Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification 9. Enter the oscilloscope measurements in the table for Current noise at 20MHz. 10. Power off the DUT and test equipment. This completes the verification procedure for one channel. If needed, return to step 1 to run through the procedure for the next channel.
  • Page 46 Specifications are subject to change without notice. All Keithley trademarks and trade 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 • Cleveland, Ohio 44139 • 440-248-0400 • Fax: 440-248-6168 • 1-888-KEITHLEY • www.keithley.com A G r eater Mea sur e of Confi denc e 7/14...

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