Tektronix Series 2230 Triple-Channel Power Supplies Verification,Adjustment Manual User manual

Series 2230 Triple-Channel Power Supplies
Verification and Adjustment Manual
tek.com/keithley
2230-905-01 Rev. B A
pril 2022
*P2230-905-01B*
2230-905-01B
Triple-Channel Power Supplies
Series 2230
Verification and Adjustment Manual
© 2022, Keithley Instruments, LLC
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, LLC, is strictly prohibited.
These are the original instructions in English.
All Keithley Instruments product names are trademarks or registered trademarks of Keithley
Instruments, LLC. Other brand names are trademarks or registered trademarks of their respective
holders.
Microsoft, Visual C++, Excel, and Windows are either registered trademarks or trademarks of
Microsoft Corporation in the United States and/or other countries.
Document number: 2230-905-01 Rev. B April 2022

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 personnel who recognize shock hazards and are familiar with the safety precautions required to avoid possible injury. Read and follow all installation, operation, and maintenance information carefully before using the product. Refer to the user documentation for complete product specifications.
If the product is used in a manner not specified, the protection provided by the product warranty may be impaired.
The types of product users are:
Responsible body is the individual or group responsible for the use and maintenance of equipment, for ensuring that the equipment is operated within its specifications and operating limits, and for ensuring that operators are adequately trained.
Operators use the product for its intended function. They must be trained in electrical safety procedures and proper use of the instrument. They must be protected from electric shock and contact with hazardous live circuits.
Maintenance personnel perform routine procedures on the product to keep it operating properly, for example, setting the line voltage or replacing consumable materials. Maintenance procedures are described in the user documentation. The procedures explicitly state if the operator may perform them. Otherwise, they should be performed only by service personnel.
Service personnel are trained to work on live circuits, perform safe installations, and repair products. Only properly trained service personnel may perform installation and service procedures.
Keithley 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. Measurement Category II (as referenced in IEC 60664) connections require protection for high transient overvoltages often associated with local AC mains connections. Certain Keithley measuring instruments may be connected 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.
Exercise extreme caution when a shock hazard is present. Lethal voltage may be present on cable connector jacks or test fixtures. The American National Standards Institute (ANSI) states that a shock hazard exists when voltage levels greater than 30 V RMS, 42.4 V peak, or 60 VDC are present. A good safety practice is to expect that hazardous voltage is present in any unknown circuit before measuring.
Operators of this product must be protected from electric shock at all times. The responsible body must ensure that operators are prevented access and/or insulated from every connection point. In some cases, connections must be exposed to potential human contact. Product operators in these circumstances must be trained to protect themselves from the risk of electric shock. If the circuit is capable of operating at or above 1000 V, no conductive part of the circuit may be exposed.
Do not connect switching cards directly to unlimited power circuits. They are intended to be used with impedance-limited sources. NEVER connect switching cards directly to AC mains. When connecting sources to switching cards, install protective devices to limit fault current and voltage to the card.
Before operating an instrument, ensure that the line cord is connected to a properly-grounded power receptacle. Inspect the connecting cables, test leads, and jumpers for possible wear, cracks, or breaks before each use.
When installing equipment where access to the main power cord is restricted, such as rack mounting, a separate main input power disconnect device must be provided in close proximity to the equipment and within easy reach of the operator.
For maximum safety, do not touch the product, test cables, or any other instruments while power is applied to the circuit under test. ALWAYS remove power from the entire test system and discharge any capacitors before: connecting or disconnecting cables or jumpers, installing or removing switching cards, or making internal changes, such as installing or removing jumpers.
Do not touch any object that could provide a current path to the common side of the circuit under test or power line (earth) ground. Always make measurements with dry hands while standing on a dry, insulated surface capable of withstanding the voltage being measured.
For safety, instruments and accessories must be used in accordance with the operating instructions. If the instruments or accessories are used in a manner not specified in the operating instructions, the protection provided by the equipment may be impaired.
Do not exceed the maximum signal levels of the instruments and accessories. Maximum signal levels are defined in the specifications and operating information and shown on the instrument panels, test fixture panels, and switching cards.
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.
If you are using a test fixture, keep the lid closed while power is applied to the device under test. Safe operation requires the use of a lid interlock.
screw is present, connect it to protective earth (safety ground) using the wire recommended in the user documentation.
If a
The
symbol on an instrument means caution, risk of hazard. The user must refer to the operating instructions located in the
user documentation in all cases where the symbol is marked on the instrument.
The symbol on an instrument means warning, risk of electric shock. Use standard safety precautions to avoid personal contact with these voltages.
The
The
If this
symbol on an instrument shows that the surface may be hot. Avoid personal contact to prevent burns.
symbol indicates a connection terminal to the equipment frame.
symbol is on a product, it indicates that mercury is present in the display lamp. Please note that the lamp must be
properly disposed of according to federal, state, and local laws.
The WARNING heading in the user documentation explains hazards that might result in personal injury or death. Always read the associated information very carefully before performing the indicated procedure.
The CAUTION heading in the user documentation explains 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 minor injury or damage the instrument. Always read the associated information very carefully before performing the indicated procedure. Damage to the instrument may invalidate the warranty.
Instrumentation and accessories shall not be connected to humans.
Before performing any maintenance, disconnect the line cord and all test cables.
To maintain protection from electric shock and fire, replacement components in mains circuits — including the power transformer, test leads, and input jacks — must be purchased from Keithley. Standard fuses with applicable national safety approvals may be used if the rating and type are the same. The detachable mains power cord provided with the instrument may only be replaced with a similarly rated power cord. Other components that are not safety-related may be purchased from other suppliers as long as they are equivalent to the original component (note that selected parts should be purchased only through Keithley to maintain accuracy and functionality of the product). If you are unsure about the applicability of a replacement component, call a Keithley office for information.
Unless otherwise noted in product-specific literature, Keithley instruments are designed to operate indoors only, in the following environment: Altitude at or below 2,000 m (6,562 ft); temperature 0 °C to 50 °C (32 °F to 122 °F); and pollution degree 1 or 2.
To clean an instrument, use a cloth dampened with deionized water or mild, water-based cleaner. Clean the exterior of the instrument only. Do not apply cleaner directly to the instrument or allow liquids to enter or spill on the instrument. Products that consist of a circuit board with no case or chassis (e.g., a data acquisition board for installation into a computer) should never require cleaning if handled according to instructions. If the board becomes contaminated and operation is affected, the board should be returned to the factory for proper cleaning/servicing.
Safety precaution revision as of June 2018.

Table of contents

Introduction ............................................................................................................... 1-1
Welcome .............................................................................................................................. 1-1
Introduction to this manual ................................................................................................... 1-1
Extended warranty ............................................................................................................... 1-2
Contact information .............................................................................................................. 1-2
Performance verification .......................................................................................... 2-1
Introduction .......................................................................................................................... 2-1
Factory service ..................................................................................................................... 2-2
Test record ........................................................................................................................... 2-2
2230-30-3 test report ................................................................................................................. 2-3
2230-30-6 test report ................................................................................................................. 2-8
2230-60-3 test report ............................................................................................................... 2-13
Verification test requirements ............................................................................................ 2-18
Environmental conditions ........................................................................................................ 2-18
Warmup period ........................................................................................................................ 2-18
Line power............................................................................................................................... 2-19
Recommended test equipment ............................................................................................... 2-20
Verification test procedures ............................................................................................... 2-22
Check DC voltage setting and DC voltage readback accuracy ............................................... 2-22
Check DC voltage line regulation ............................................................................................ 2-24
Check DC voltage load regulation ........................................................................................... 2-25
Check DC current and DC current readback accuracy ........................................................... 2-27
Check DC current line regulation ............................................................................................ 2-29
Check DC current load regulation ........................................................................................... 2-31
Check voltage noise (20 MHz) ................................................................................................ 2-33
Check current noise (20 MHz) ................................................................................................. 2-35
Adjustment ................................................................................................................ 3-1
Introduction .......................................................................................................................... 3-1
Environmental conditions ..................................................................................................... 3-2
Temperature and relative humidity ............................................................................................ 3-2
Line power................................................................................................................................. 3-2
Warmup period ..................................................................................................................... 3-2
Recommended test equipment ............................................................................................ 3-3
General adjustment considerations ..................................................................................... 3-3
Initial instrument setup ......................................................................................................... 3-4
Connect the calibration equipment ............................................................................................ 3-4
Connect the remote communication .......................................................................................... 3-5
Calibration adjustment procedures ...................................................................................... 3-6
Configure the serial communication interface ........................................................................... 3-7
Calibrate voltage ....................................................................................................................... 3-9
Calibrate current ...................................................................................................................... 3-10
Contact information .................................................................. 1-2
In this section:

Welcome

Thank you for choosing a Keithley Instruments product. The Series 2230 Triple-Channel Power Supplies (Models 2230-30-3, 2230-30-6, and 2230-60-3) provide output power up to 195 W and 375 W. Each power supply has three isolated power channels, allowing you to power circuits with different references or polarities.
Section 1

Introduction

Welcome .................................................................................. 1-1
Introduction to this manual ....................................................... 1-1
Extended warranty ................................................................... 1-2
The Series 2230 supports remote sensing and has rear-panel connections to make automated test more convenient. Built in RS-232 and USB interfaces allow multiple communication methods. The Series 2230 power supplies cover a wide range of applications in a space-saving 2U half-rack size.

Introduction to this manual

This manual provides instructions to help you calibrate and adjust your Keithley Instruments 2230. In this manual, the term "calibration" refers to the process of verifying that the accuracy of the instrument is within its one-year accuracy specifications. The term "adjustment" refers to the process of changing the calibration constants so that the accuracy of the instrument is within its one-year accuracy specifications.
This manual presents calibration information, adjustment information, and command descriptions for the calibration and adjustment commands.
For additional command descriptions, refer to the Series 2230Triple-Channel Power Supplies User's Manual (part number 2230-905-01), which is available on the
page.
Product Support and Downloads web
Section
Verification and Adjustment Manual
1: Introduction Series 2230 Triple-Channel Power Supplies

Extended warranty

Additional years of warranty coverage are available on many products. These valuable contracts protect you from unbudgeted service expenses and provide additional years of protection at a fraction of the price of a repair. Extended warranties are available on new and existing products. Contact your local Keithley Instruments office, sales partner, or distributor for details.

Contact information

If you have any questions after you review the information in this documentation, please contact your local Keithley Instruments office, sales partner, or distributor. You can also call the Tektronix corporate headquarters (toll-free inside the U.S. and Canada only) at 1-800-833-9200. For worldwide contact numbers, visit tek.com/contact
.
1-2 2230-905-01 Rev. B April 2022
In this section:
Verification test procedures .................................................... 2-22
Introduction .............................................................................. 2-1
Factory service ......................................................................... 2-2
Test record ............................................................................... 2-2
Verification test requirements ................................................. 2-18

Introduction

Use the procedures in this section to verify that 2230 accuracy is within the limits stated in the instrument’s one-year accuracy specifications. Specifications and characteristics are subject to change without notice; refer to the Product Support and Downloads web page f specifications.
Section 2

Performance verification

or the most recent
You can use these calibration verification procedures to:
Make sure that the instrument was not damaged during shipment.
Verify that the instrument meets factory specifications.
Determine if adjustment is required.
Verify that adjustment is done properly.
The information in this section is intended for qualified service personnel only, as described by the types of product users in the Safety precautions. Do not attempt these procedures unless you are qualified to do so. Some of these procedures may expose you to hazardous voltages, which could cause personal injury or death. Use appropriate safety precautions when working with hazardous voltages.
If the instrument is still under warranty and its performance is outside specified limits, please contact your local Keithley Instruments office, sales partner, or distributor. You can also call the Tektronix corporate headquarters (toll-free inside the U.S. and Canada only) at 1-800-833-9200. For worldwide contact numbers, visit tek.com/contact
.
Section
Verification and Adjustment Manual
DC voltage accuracy
DC voltage readback accuracy
DC voltage line regulation
DC voltage load regulation
DC current accuracy
DC current readback accuracy
DC current line regulation
DC current load regulation
Voltage noise at 20 MHz
Current noise at 20 MHz
2: Performance verification Series 2230 Triple-Channel Power Supplies

Factory service

To return the instrument to Keithley Instruments for repair:
1. Call the Repair Department at 1-800-408-8165 or send an email to
RMAREQUEST@tektronix.com for a Return Material Authorization (RMA) number.
2. Carefully pack the instrument in the original packing carton.
3. Write ATTENTION REPAIR DEPARTMENT and the RMA number on the shipping label.

Test record

Model Serial number Procedure performed by Used as
Test Passed Failed
2-2 2230-905-01 Rev. B April 2022
Series 2230
Performance verification
0%
0.00000 V
0.5 A
–0.01000 V
0.01000 V
25%
7.5000 V
0.5 A
7.4878 V
7.5123 V
50%
15.0000 V
0.5 A
14.9855 V
15.0145 V
75%
22.5000 V
0.5 A
22.4833 V
22.5168 V
100%
30.0000 V
0.5 A
29.9810 V
30.0190 V
0%
0.0000 V
0.5 A
–0.01000 V
0.01000 V
25%
7.5000 V
0.5 A
7.4878 V
7.5123 V
75%
22.5000 V
0.5 A
22.4833 V
22.5168 V
100%
30.0000 V
0.5 A
29.9810 V
30.0190 V
0%
0.0000 V
0.5 A
–0.01000 V
0.01000 V
25%
1.2500 V
0.5 A
1.2396 V
1.2604 V
75%
3.7500 V
0.5 A
3.7389 V
3.7611 V
100%
5.0000 V
0.5 A
4.9885 V
5.0115 V
Triple-Channel Power Supplies Verification and Adjustment Manual Section 2:

2230-30-3 test report

2230-30-3 DC voltage accuracy
Instrument test
DUT voltage Test current Minimum Measured Maximum
voltage
Channel 1
Channel 2
50% 15.0000 V 0.5 A 14.9855 V 15.0145 V
Channel 3
50% 2.5000 V 0.5 A 2.4893 V 2.5108 V
2230-905-01 Rev. B April 2022 2-3
Section
Verification and Adjustment Manual
0%
0.00000 V
0.5 A
0.01000 V
25%
7.5000 V
0.5 A
0.01225 V
50%
15.0000 V
0.5 A
0.01450 V
75%
22.5000 V
0.5 A
0.01675 V
100%
30.0000 V
0.5 A
0.01900 V
0%
0.0000 V
0.5 A
0.01000 V
25%
7.5000 V
0.5 A
0.01225 V
50%
15.0000 V
0.5 A
0.01450 V
75%
22.5000 V
0.5 A
0.01675 V
100%
30.0000 V
0.5 A
0.01900 V
0%
0.0000 V
0.5 A
0.010000 V
25%
1.2500 V
0.5 A
0.010375 V
50%
2.5000 V
0.5 A
0.010750 V
75%
3.7500 V
0.5 A
0.011125 V
100%
5.0000 V
0.5 A
0.011500 V
0.00600 V
0.00600 V
0.00350 V
2230-30-3 DC voltage readback accuracy
2: Performance verification Series 2230 Triple-Channel Power Supplies
Instrument test voltage
Channel 1
Channel 2
Channel 3
DUT voltage Test current Measured
voltage
Voltage readback
Absolute difference
Maximum difference
2230-30-3 DC voltage line regulation
Instrument Minimum Maximum Nominal Nominal
minimum
Channel 1
Channel 2
Channel 3
2-4 2230-905-01 Rev. B April 2022
Maximum nominal
Larger Maximum
value
Series 2230
ance verification
0.00600 V
0.00600 V
0%
15 V
0.00000 A
–0.00500 A
0.00500 A
25%
15 V
0.75000 A
0.74425 A
0.75575 A
50%
15 V
1.50000 A
1.49350 A
1.50650 A
75%
15 V
2.25000 A
2.24275 A
2.25725 A
100%
15 V
3.00000 A
2.99200 A
3.00800 A
0%
15 V
0.00000 A
–0.00500 A
0.00500 A
25%
15 V
0.75000 A
0.74425 A
0.75575 A
50%
15 V
1.50000 A
1.49350 A
1.50650 A
75%
15 V
2.25000 A
2.24275 A
2.25725 A
0%
5 V
0.00000 A
–0.00500 A
0.00500 A
50%
5 V
1.50000 A
1.49350 A
1.50650 A
75%
5 V
2.25000 A
2.24275 A
2.25725 A
100%
5 V
3.00000 A
2.99200 A
3.00800 A
Triple-Channel Power Supplies Verification and Adjustment Manual Section 2: Perform
2230-30-3 DC voltage load regulation
Instrument Minimum Reference Maximum Reference
minimum
Channel 1
Channel 2
Channel 3
0.00350 V
2230-30-3 DC current accuracy
Instrument test
Test voltage DUT current Minimum Measured
current
Channel 1
Maximum reference
Maximum reference /0.98
current
Largest Maximum
value
Maximum
Channel 2
100% 15 V 3.00000 A 2.99200 A 3.00800 A
Channel 3
25% 5 V 0.75000 A 0.74425 A 0.75575 A
2230-905-01 Rev. B April 2022 2-5
Section
Verification and Adjustment Manual
0%
0.00000 A
0.00500 A
25%
0.75000 A
0.00575 A
50%
1.50000 A
0.00650 A
75%
2.25000 A
0.00725 A
100%
3.00000 A
0.00800 A
0%
0.00000 A
0.00500 A
25%
0.75000 A
0.00575 A
50%
1.50000 A
0.00650 A
75%
2.25000 A
0.00725 A
100%
3.00000 A
0.00800 A
0%
0.00000 A
0.00500 A
25%
0.75000 A
0.00575 A
50%
1.50000 A
0.00650 A
75%
2.25000 A
0.00725 A
100%
3.00000 A
0.00800 A
15 V
0.00330 A
15 V
0.00330 A
5 V
0.00330 A
2230-30-3 DC current readback accuracy
2: Performance verification Series 2230 Triple-Channel Power Supplies
Instrument test current
Channel 1
Channel 2
Channel 3
Test current Measured
current
Current readback Absolute
difference
Maximum difference
2230-30-3 DC current line regulation
Instrument Test
voltage
Channel 1
Channel 2
Channel 3
2-6 2230-905-01 Rev. B April 2022
Minimum Maximum Nominal Nominal
minimum
Maximum nominal
Larger Maximum
value
Series 2230
Performance verification
0.00330 A
0.00330 A
20 Ω
1.00 mV
3.0 mV
20 Ω
1.00 mV
3.0 mV
3.3 Ω
1.00 mV
3.0 mV
1 Ω 4.0 mA
1 Ω 4.0 mA
1 Ω 4.0 mA
Triple-Channel Power Supplies Verification and Adjustment Manual Section 2:
2230-30-3 DC current load regulation
Instrument Minimum Reference Maximum Reference
minimum
Maximum reference
Larger Maximum
difference
Channel 1
Channel 2
0.00330 A
Channel 3
2230-30-3 voltage noise at 20 MHz
Instrument Voltage test load R1 Measured RMS Maximum RMS Measured pk-pk Maximum pk-pk
Channel 1
Channel 2
Channel 3
2230-30-3 current noise at 20 MHz
Instrument Current test load R1 Measured RMS Maximum RMS
Channel 1
Channel 2
Channel 3
2230-905-01 Rev. B April 2022 2-7
Section
Verification and Adjustment Manual
0%
0.00000 V
0.5 A
–0.01000 V
0.01000 V
25%
7.5000 V
0.5 A
7.4878 V
7.5123 V
50%
15.0000 V
0.5 A
14.9855 V
15.0145 V
75%
22.5000 V
0.5 A
22.4833 V
22.5168 V
100%
30.0000 V
0.5 A
29.9810 V
30.0190 V
0%
0.0000 V
0.5 A
–0.01000 V
0.01000 V
25%
7.5000 V
0.5 A
7.4878 V
7.5123 V
75%
22.5000 V
0.5 A
22.4833 V
22.5168 V
100%
30.0000 V
0.5 A
29.9810 V
30.0190 V
0%
0.0000 V
0.5 A
–0.01000 V
0.01000 V
25%
1.2500 V
0.5 A
1.2396 V
1.2604 V
75%
3.7500 V
0.5 A
3.7389 V
3.7611 V
100%
5.0000 V
0.5 A
4.9885 V
5.0115 V
2: Performance verification Series 2230 Triple-Channel Power Supplies

2230-30-6 test report

2230-30-6 DC voltage accuracy
Instrument test
DUT voltage Test current Minimum Measured Maximum
voltage
Channel 1
Channel 2
50% 15.0000 V 0.5 A 14.9855 V 15.0145 V
Channel 3
50% 2.5000 V 0.5 A 2.4893 V 2.5108 V
2-8 2230-905-01 Rev. B April 2022
Series 2230
Performance verification
25%
7.5000 V
0.5 A
0.01225 V
50%
15.0000 V
0.5 A
0.01450 V
100%
30.0000 V
0.5 A
0.01900 V
0%
0.0000 V
0.5 A
0.01000 V
25%
7.5000 V
0.5 A
0.01225 V
50%
15.0000 V
0.5 A
0.01450 V
75%
22.5000 V
0.5 A
0.01675 V
100%
30.0000 V
0.5 A
0.01900 V
0%
0.0000 V
0.5 A
0.010000 V
25%
1.2500 V
0.5 A
0.010375 V
50%
2.5000 V
0.5 A
0.010750 V
75%
3.7500 V
0.5 A
0.011125 V
100%
5.0000 V
0.5 A
0.011500 V
0.00600 V
0.00600 V
0.00350 V
2230-30-6 DC voltage readback accuracy
Triple-Channel Power Supplies Verification and Adjustment Manual Section 2:
Instrument test
voltage
Channel 1
0% 0.00000 V 0.5 A 0.01000 V
75% 22.5000 V 0.5 A 0.01675 V
Channel 2
Channel 3
DUT voltage Test current Measured
voltage
Voltage readback
Absolute difference
Maximum difference
2230-30-6 DC voltage line regulation
Instrument Minimum Maximum Nominal Nominal
minimum
Channel 1
Channel 2
Channel 3
2230-905-01 Rev. B April 2022 2-9
Maximum nominal
Larger Maximum
value
Section
Verification and Adjustment Manual
0.00600 V
0.00600 V
0%
15 V
0.00000 A
–0.00800 A
0.00800 A
25%
15 V
1.50000 A
1.49050 A
1.50950 A
50%
15 V
3.00000 A
2.98900 A
3.01100 A
75%
15 V
4.50000 A
4.48750 A
4.51250 A
0%
15 V
0.00000 A
–0.00800 A
0.00800 A
25%
15 V
1.50000 A
1.49050 A
1.50950 A
50%
15 V
3.00000 A
2.98900 A
3.01100 A
75%
15 V
4.50000 A
4.48750 A
4.51250 A
100%
15 V
6.00000 A
5.98600 A
6.01400 A
0%
5 V
0.00000 A
–0.00500 A
0.00500 A
25%
5 V
0.75000 A
0.74425 A
0.75575 A
50%
5 V
1.50000 A
1.49350 A
1.50650 A
75%
5 V
2.25000 A
2.24275 A
2.25725 A
100%
5 V
3.00000 A
2.99200 A
3.00800 A
2: Performance verification Series 2230 Triple-Channel Power Supplies
2230-30-6 DC voltage load regulation
Instrument Minimum Reference Maximum Reference
minimum
Maximum reference
Maximum reference
Largest Maximum
value
/0.98
Channel 1
Channel 2
Channel 3
0.00350 V
2230-30-6 DC current accuracy
Instrument test current
Test voltage DUT current Minimum Measured
current
Maximum
Channel 1
100% 15 V 6.00000 A 5.98600 A 6.01400 A
Channel 2
Channel 3
2-10 2230-905-01 Rev. B April 2022
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