Keithley 2260B-30-36 Adjustment Manual
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Keithley 2260B-30-36 Adjustment Manual

2260b series multi-range programmable dc power supplies
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See also: Programming Manual , User Manual
Series 2260B
Multi-Range Programmable DC Power Supplies
Verification and Adjustment Manual
077104802 / November 2016
*P077104802*
077104802
A Gr eate r Me as u re of C o nf i de n c e
www.tek.com/keithley

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Summary of Contents for Keithley 2260B-30-36

  • Page 1 Series 2260B Multi-Range Programmable DC Power Supplies Verification and Adjustment Manual 077104802 / November 2016 *P077104802* 077104802 A Gr eate r Me as u re of C o nf i de n c e...
  • Page 2 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. Other brand names are trademarks or registered trademarks of their respective holders.

  • Page 3: Safety Precautions

    Keithley Instruments products are designed for use with electrical signals that are measurement, control, and data I/O connections, with low transient overvoltages, and must not be directly connected to mains voltage or to voltage sources with high transient overvoltages.
  • Page 4 (note that selected parts should be purchased only through Keithley Instruments to maintain accuracy and functionality of the product). If you are unsure about the applicability of a replacement component, call a Keithley Instruments office for information.

  • Page 5: Table Of Contents

    Table of Contents Introduction ....................... 1-1 Welcome ..........................1-1 Extended warranty ....................... 1-1 Contact information ......................1-1 Series 2260B available models .................... 1-2 Verification preparation .................... 2-1 Verification information......................2-1 Verification equipment......................2-2 Constant voltage verification ................... 3-1 Constant voltage (CV) verification tests ................3-1 Voltage programming and measurement accuracy verification ..........
  • Page 6 Table of Contents Series 2260B Programmable Power Supplies Verification and Adjustment Manual Constant voltage adjustment ................... 8-1 Connect device equipment ....................8-1 Constant voltage adjustment procedure ................8-2 Constant current adjustment ................... 9-1 Connect device equipment ....................9-1 Constant current adjustment procedure ................9-2 Adjustment code glossary ..................

  • Page 7: Introduction

    Series 2260B available models ..........1-1 Welcome Thank you for choosing a Keithley Instruments product. The Series 2260B Programmable DC Power Supplies is designed for use in the laboratory and for test applications. It also has excellent regulation and low output voltage ripple. The digital displays provide accurate readings of voltage and current and also provide for easy, precise setting of output values using digital entry of current and voltage values.

  • Page 8: Series 2260B Available Models

    The 2260B series consists of 12 models, divided into three different model types covering four power capacities: 360 watt models, 720 watt models, and 1080 watt models. Model number Output voltage Output current Power 2260B-30-36 0 V to 30 V 0 A to 36 A 360 W 2260B-30-72 0 V to 30 V...

  • Page 9: Verification Preparation

    You will need to perform the adjustment procedure. • If the adjustment does not accomplish the desired result you will have to send the instrument to your local Keithley Instruments office, sales partner, or distributor for repair (see Contact Information...

  • Page 10: Verification Equipment

    Bandwidth limit: 20 MHz Probe: 1:1 with JEITA RC-9131B Digital multimeter Voltage resolution: 0.1 mV Keithley DMM 7510 or equivalent Accuracy: <0.01% mV of reading Note that the following sections will indicate how to set up the equipment based on the type of verification that you are performing.

  • Page 11: Constant Voltage Verification

    Section 3 Constant voltage verification In this section: Constant voltage (CV) verification tests ........3-1 Constant voltage (CV) verification tests There are four verification tests in this series. These tests verify display panel accuracy, verify programmed voltage, measure output voltage changes based on load or no load, measure output voltage based on AC line voltage changes, and measure ripple and noise.

  • Page 12: Constant Voltage Load Regulation Verification

    Section 3: Constant voltage verification Series 2260B Programmable Power Supplies Verification and Adjustment Manual Before proceeding, make sure that the 2260B instrument is off. To perform voltage programming and measurement accuracy: 1. Connect the AC power supply to the 2260B. 2.

  • Page 13: Constant Voltage Line Regulation Verification

    Series 2260B Programmable Power Supplies Verification and Adjustment Manual Section 3: Constant voltage verification Before proceeding, make sure that the 2260B instrument is off. To perform CV load regulation verification: 1. Connect the AC power supply to the 2260B. 2. Connect the DMM on the PCS-1000 directly across the +S and -S terminals to an electronic DC load, as shown in the previous figure.
  • Page 14 Section 3: Constant voltage verification Series 2260B Programmable Power Supplies Verification and Adjustment Manual Before proceeding, make sure that the 2260B instrument is off. To perform CV line regulation verification: 1. Connect the AC power supply to the 2260B. 2. Connect the DMM on the PCS-1000 directly across the +S and -S terminals to an electronic DC load, as shown in the previous figure.

  • Page 15: Constant Voltage Ripple And Noise Verification

    Series 2260B Programmable Power Supplies Verification and Adjustment Manual Section 3: Constant voltage verification Constant voltage ripple and noise verification This test measures the DC output voltage with the (10:1) 50 Ω probe. Hazardous voltages may be present on all output and guard terminals. To prevent electrical shock that could cause injury or death, never make or break connections to any of the instruments used for this verification test while instruments are powered on.
  • Page 16 Section 3: Constant voltage verification Series 2260B Programmable Power Supplies Verification and Adjustment Manual Before proceeding, make sure that the 2260B instrument is off. To perform CV ripple and noise verification: 1. Connect the AC power supply to the 2260B. 2.

  • Page 17: Constant Current Verification

    Section 4 Constant current verification In this section: Constant current verification tests ..........4-1 Constant current (CC) verification tests There are four verification tests in this series. These tests verify display panel accuracy, verify programmed voltage, measure output voltage changes based on load or no load, measure output voltage based AC line voltage changes, and measure output noise.
  • Page 18 Section 4: Constant current verification Series 2260B Programmable Power Supplies Verification and Adjustment Manual Before proceeding, make sure that the 2260B instrument is off. To perform current programming and measurement accuracy: 1. Connect the AC power supply. 2. Connect the current input on the PCS-1000 across the +S and -S terminals through an electronic DC load, as shown in the previous figure.

  • Page 19: Constant Current Load Regulation Verification

    Series 2260B Programmable Power Supplies Verification and Adjustment Manual Section 4: Constant current verification Constant current load regulation verification This test measures the change in output current resulting from a change from full scale to short circuit. Hazardous voltages may be present on all output and guard terminals. To prevent electrical shock that could cause injury or death, never make or break connections to any of the instruments used for this verification test while instruments are powered on.

  • Page 20: Constant Current Line Regulation Verification

    Section 4: Constant current verification Series 2260B Programmable Power Supplies Verification and Adjustment Manual Constant current line regulation verification This test measures the change in output current that results from a change in AC line voltage from the minimum to maximum value within the line voltage specifications. Hazardous voltages may be present on all output and guard terminals.

  • Page 21: Verification Test Record Forms

    Series 2260B Programmable Power Supplies Verification and Adjustment Manual Section 4: Constant current verification Before proceeding, make sure that the 2260B instrument is off. To perform CC line regulation verification: 1. Connect the AC power supply. 2. Connect the PCS-1000 current input across the +S and -S terminals through an electronic DC load, as shown in the previous figure.

  • Page 22: Constant Current Noise Verification

    Section 4: Constant current verification Series 2260B Programmable Power Supplies Verification and Adjustment Manual Constant current noise verification This test measures the AC output voltage with the PCS-1000 and DMM. Hazardous voltages may be present on all output and guard terminals. To prevent electrical shock that could cause injury or death, never make or break connections to any of the instruments used for this verification test while instruments are powered on.

  • Page 23: Verification Test Record Forms

    Section 5 Verification test record forms In this section: 30 Volt verification test record ..........5-1 80 Volt verification test record ..........5-4 250 Volt verification record ............5-6 800 Volt verification record ............5-8...

  • Page 24: Volt Verification Test Record

    Series 2260B Programmable Power Supplies Verification and Adjustment Manual 30 Volt verification test record Print this page and record your verification results that can be used for reference in the future. Make sure to keep this record with your power supply.  2260B-30-36  2260B-30-72  2260B-30-108 Model...
  • Page 25 Series 2260B Programmable Power Supplies Verification and Adjustment Manual Section 5: Verification test record forms Constant current tests: Current programming Model Minimum Results Maximum specifications and measurement specifications Minimum current out 30-36 -30 mA +30 mA 30-72 -60 mA +60 mA 30-108 -100 mA +100 mA...
  • Page 26 Section 5: Verification test record forms Series 2260B Programmable Power Supplies Verification and Adjustment Manual 80 Volt verification test record Print this page and record your verification results that can be used for reference in the future. Make sure to keep this record with your power supply. ...
  • Page 27 Series 2260B Programmable Power Supplies Verification and Adjustment Manual Section 5: Verification test record forms Constant current tests: Current programming Model Minimum Results Maximum specifications and measurement specifications Minimum current out 80-13 -10 mA +10 mA 80-27 -30 mA +30 mA 80-40 -40 mA +40 mA...

  • Page 28: Volt Verification Record

    Section 5: Verification test record forms Series 2260B Programmable Power Supplies Verification and Adjustment Manual 250 Volt verification record Print this page and record your verification results that can be used for reference in the future. Make sure to keep this record with your power supply. ...
  • Page 29 Series 2260B Programmable Power Supplies Verification and Adjustment Manual Section 5: Verification test record forms Constant current tests: Current programming Model Minimum Results Maximum specifications and measurement specifications Minimum current out 250-4 -5 mA +5 mA 250-9 -10 mA +10 mA 250-13 -15 mA +15 mA...
  • Page 30 Section 5: Verification test record forms Series 2260B Programmable Power Supplies Verification and Adjustment Manual 800 Volt verification record Print this page and record your verification results that can be used for reference in the future. Make sure to keep this record with your power supply. ...
  • Page 31 Series 2260B Programmable Power Supplies Verification and Adjustment Manual Section 5: Verification test record forms Constant current tests: Current programming Model Minimum Results Maximum specifications and measurement specifications Minimum current out 800-1 -2 mA +2 mA 800-2 -4 mA +4 mA 800-4 -6 mA +6 mA...

  • Page 32: 2260B Adjustment Equipment

    0.4 A/μs or better. DC power supply Voltage resolution: 1 mV Keithley programmable dual-channel DC power Accuracy: <0.05% mV of reading supply 2220-30-01 Digital multimeter Voltage resolution: 0.1 mV Keithley DMM 7510 or equivalent Accuracy: <0.01% mV of reading...

  • Page 33: Analog Interface Adjustment

    Section 7 Analog interface adjustment In this section: Remove top cover ..............7-1 Confirm location of adjustment points ........7-2 Analog interface adjustment procedure ........7-3 Remove top cover Hazardous voltages may be present on all output and guard terminals. To prevent electrical shock that could cause injury or death, never make or break connections to any of the instruments used for this adjustment while instruments are powered on.

  • Page 34: Confirm Location Of Adjustment Points

    Before you can make adjustments on the instrument, you will need to remove the 2260B top cover. On the 360 watt models (2260B-30-36, 2260B-80-13, 2260B-250-4, and 2260B-800-01), note that there are nine screws that you will need to remove in order to remove the top cover (see next figure).

  • Page 35: Analog Interface Adjustment Procedure

    Series 2260B Programmable Power Supplies Verification and Adjustment Manual Section 7: Analog interface adjustment Make sure that you connect the following devices as indicated in the next figure. Also, make sure that you set the Model 2220-30-1 DC power supply, channel one and channel two to 10.00 V. Figure 11: Analog adjustment devices Analog interface adjustment procedure To start the adjustment procedure:...
  • Page 36 Series 2260B Programmable Power Supplies Verification and Adjustment Manual 4. Use the Current knob to select the appropriate password for the model that you are calibrating. Here's the list of models and passwords: Model number Password 2260B-30-36 3036 2260B-30-72 3072 2260B-30-108...
  • Page 37 (VR401) on the 2260B instrument (see Confirm location of adjustment points page 7-2)). Here's the list of models with adjustment ranges for point VR401: Model number minimum volts maximum volts 2260B-30-36 29.994 30.006 2260B-30-72 29.994 30.006 2260B-30-108 29.994 30.006...
  • Page 38 (VR400) on the 2260B instrument (see Confirm location of adjustment points (on page 7-2)). Here's the list of models with adjustment ranges for point VR401: Model number minimum current maximum current 2260B-30-36 35.9928 36.0072 2260B-30-72 71.9856 72.0144 2260B-30-108 107.9784 108.0216...
  • Page 39 Series 2260B Programmable Power Supplies Verification and Adjustment Manual Section 7: Analog interface adjustment 18. Press the Voltage knob to exit adjustment mode. The "x" in the diagram above indicates that the value is not fixed. 19. Turn off the 2600B instrument and put the top cover back on. Analog interface adjustment is complete.

  • Page 40: Constant Voltage Adjustment

    Section 8 Constant voltage adjustment In this section: Connect device equipment ............8-1 Constant voltage adjustment procedure ........8-2 Connect device equipment Hazardous voltages may be present on all output and guard terminals. To prevent electrical shock that could cause injury or death, never make or break connections to any of the instruments used for this adjustment while instruments are powered on.
  • Page 41 2. Rotate the voltage knob until it indicates "F - 00". 3. Use the Current knob to select the appropriate password for the model that you are calibrating. Here's the list of models and passwords: Model number Password 2260B-30-36 3036 2260B-30-72 3072 2260B-30-108...
  • Page 42 Series 2260B Programmable Power Supplies Verification and Adjustment Manual Section 8: Constant voltage adjustment 5. Use the current knob to enter "constant voltage" adjustment mode. To enter adjustment mode, rotate the current knob until "1" is displayed on the bottom display (C000:1). 6.
  • Page 43 Section 8: Constant voltage adjustment Series 2260B Programmable Power Supplies Verification and Adjustment Manual The "x" in the diagram above indicates that the value is not fixed. 12. Rotate the current knob to set the middle voltage value on the 2260B display so that it is the same as the reading on the PCS-1000 voltmeter.
  • Page 44 Series 2260B Programmable Power Supplies Verification and Adjustment Manual Section 8: Constant voltage adjustment The display will indicate "OK" when the adjustment is complete for approximately five seconds. Additionally, the output turns on and the CV indicator is lit. Also, the instrument automatically returns to C110 after the automatic OVP adjustment ends.
  • Page 45 Section 8: Constant voltage adjustment Series 2260B Programmable Power Supplies Verification and Adjustment Manual 22. Press the voltage knob to exit adjustment mode. The "x" in the diagram above indicates that the value is not fixed. Constant voltage adjustment is complete. 077104802 / November 2016...

  • Page 46: Constant Current Adjustment

    Section 9 Constant current adjustment In this section: Connect device equipment ............9-1 Constant current adjustment procedure ........9-2 Connect device equipment Hazardous voltages may be present on all output and guard terminals. To prevent electrical shock that could cause injury or death, never make or break connections to any of the instruments used for this adjustment while instruments are powered on.
  • Page 47 2. Rotate the voltage knob until it indicates "F - 00". 3. Use the Current knob to select the appropriate password for the model that you are calibrating. Here's the list of models and passwords: Model number Password 2260B-30-36 3036 2260B-30-72 3072 2260B-30-108...
  • Page 48 Series 2260B Programmable Power Supplies Verification and Adjustment Manual Section 9: Constant current adjustment 5. Use the current knob to enter "constant voltage" adjustment mode. To enter the adjustment mode, rotate the current knob until "1" is displayed on the bottom display (C000:1). 6.
  • Page 49 Section 9: Constant current adjustment Series 2260B Programmable Power Supplies Verification and Adjustment Manual 12. Press the voltage knob to set the half-scale current value (C124). The "x" in the diagram above indicates that the value is not fixed. 13. Rotate the current knob to set the half-scale current value on the 2260B display so that it is the same as the reading on the PCS-1000 current meter.
  • Page 50 Series 2260B Programmable Power Supplies Verification and Adjustment Manual Section 9: Constant current adjustment The display will indicate "OK" when the adjustment is complete. Additionally, the output turns on and the CC indicator is lit. Also, the instrument automatically returns to C120 after the automatic OCP adjustment ends.
  • Page 51 Section 9: Constant current adjustment Series 2260B Programmable Power Supplies Verification and Adjustment Manual The "x" in the diagram above indicates that the value is not fixed. Constant current adjustment is complete. 077104802 / November 2016...

  • Page 52: Adjustment Code Glossary

    Section 10 Adjustment code glossary In this section: Adjustment codes ..............10-2...

  • Page 53: Adjustment Codes

    Section 10: Adjustment code glossary Series 2260B Programmable Power Supplies Verification and Adjustment Manual Adjustment codes Voltage display Current display Description F-01 Power applied; Function key lights up F-00 0000 Enter adjustment mode C000 Password entered; instrument ready for adjustment C000 Enter constant voltage adjustment mode C000...

  • Page 54: Index

    Index 2260B Adjustment equipment • 6-1 Remove top cover • 7-1 250 Volt verification record • 5-6 Series 2260B available models • 1-2, 3-2, 3-3, 3-4, 30 Volt verification test record • 5-2 3-6, 4-2, 4-5, 4-6 80 Volt verification test record • 5-4 Verification equipment •...
  • Page 55 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 • 1-800-935-5595 • www.tek.com/keithley A Gr eater M easur e of C onfi dence...

This manual is also suitable for:

2260b-80-132260b-80-272260b-80-402260b-250-42260b-250-92260b-30-108 ... Show all

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