Related Manuals for Keysight U8001A
Summary of Contents for Keysight U8001A
- Page 1 Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - TestEquipmentDepot.com Keysight U8001A/U8002A Single Output DC Power Supplies User’s and Service Guide...
- Page 2 FAR 27.401 or DFAR 227.7103-5 (c), as applicable in any Do not proceed beyond a WARNING technical data. notice until the indicated conditions are fully understood and met. Keysight U8001A/U8002A User’s and Service Guide...
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Page 3: Safety Symbols
Earth (ground) terminal manual for specific Warning or Caution information. Protective conductor terminal Caution, hot surface. Out position of a bi-stable push Frame or chassis terminal control. Equipotentiality In position of a bi-stable push control. Keysight U8001A/U8002A User’s and Service Guide... -
Page 4: General Safety Information
Failure to comply with these precautions or specific warnings elsewhere in this manual violates safety standards of design, manufacture and intended use of the instrument. Keysight Technologies assumes no liability for customer’s failure to comply with these requirements. -
Page 5: Environment Conditions
–20 °C to 70 °C Operating Relative Humidity (max) Up to 95% Altitude Up to 2000 m The Keysight U8001A/U8002A single output DC power supplies comply with CAUTION the following safety and EMC requirements: – IEC 61326:2002/EN61326:1997+ A1:1998+A3:2003 – CISPR 11:1990/EN55011:1990 –... -
Page 6: Regulatory Markings
The CSA mark is a registered trademark of the Canadian Standards Association. A CSA mark indicates that the product is certified for Canadian markets, to the applicable Canadian standards. Keysight U8001A/U8002A User’s and Service Guide... -
Page 7: Waste Electrical And Electronic Equipment (Weee) Directive 2002/96/Ec
With reference to the equipment types in the WEEE directive Annex 1, this instrument is classified as a “Monitoring and Control Instrument” product. The affixed product label is as shown below. Do not dispose in domestic household waste. Keysight U8001A/U8002A User’s and Service Guide... - Page 8 THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight U8001A/U8002A User’s and Service Guide...
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Page 9: Table Of Contents
........34 Keysight U8001A/U8002A User’s and Service Guide... - Page 10 Appendix A: List of Error Codes ....... 80 Keysight U8001A/U8002A User’s and Service Guide...
- Page 11 ......61 Figure 5-4 Graph of load transient response ....69 Keysight U8001A/U8002A User’s and Service Guide...
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- Page 13 Table 5-2 List of equipment ......58 Keysight U8001A/U8002A User’s and Service Guide...
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- Page 15 Keysight U8001A/U8002A Single Output DC Power Supplies User’s and Service Guide Quick Start Preliminary Checkout Output Checkout If the Power Supply Does Not Turn On To Rack-mount the Instrument This chapter is intended for both the experienced and inexperienced users because it calls attention to certain checks that should be made prior to operation.
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Page 16: Quick Start
The following steps help you to validate that the power supply is ready for use. 1 Check the list of supplied item. Verify that you have received the following items together with your power supply. If anything is found missing, contact your nearest Keysight Technologies Sales Office. – Power cord –... -
Page 17: Output Checkout
5 Ensure that the voltage can be adjusted from zero to the full rated value by adjusting the knob. When the power supply is turned on, the last memory will be shown on the NOTE display. Keysight U8001A/U8002A User’s and Service Guide... -
Page 18: Current Output Checkout
6 Ensure that the current can be adjusted from zero to the full rated value. 7 Turn off the power supply and remove the short from the output terminals. Keysight U8001A/U8002A User’s and Service Guide... -
Page 19: If The Power Supply Does Not Turn On
If you need more help, refer to Chapter 5 for instructions on returning the instrument to Keysight Technologies for service. 1 Verify that there is AC power to the power supply. First, verify that the power cord is firmly plugged into the power receptacle on the rear panel of the power supply. -
Page 20: To Rack-Mount The Instrument
To rack-mount two instruments side-by-side, order lock-link kit, 5061-9694 and flange kit, 5063-9212. Be sure to use the support rails inside the rack cabinet. To install two instruments in a sliding support shelf, order support shelf, 5063-9255, and slide kit, 1494-0015. Keysight U8001A/U8002A User’s and Service Guide... - Page 21 Front Panel at a Glance Rear Panel at a Glance Display Annunciators Description Installation Output Connections This chapter provides general description of the instrument, front panel overview, rear panel overview, display annunciators and installation guidelines for U8001A/ U8002A single output DC power supplies.
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Page 22: General Information
Enables and disables the power supply output. Knob Increases and decreases the value of the flashing digit. Power On/Off To turn On/Off the power supply. Binding posts Positive, negative and ground binding posts for wire connections. Keysight U8001A/U8002A User’s and Service Guide... -
Page 23: Rear Panel At A Glance
Sets the line voltage to the proper values for different country based. Power-line module Combination of the AC inlet and power fuse-holder assembly. Physical lock mechanism Enables physical lock mechanism. Line Voltage Fuse Rating indicator Indicates the line voltage and line fuse rating. Keysight U8001A/U8002A User’s and Service Guide... -
Page 24: Display Annunciators
The display shows the limit values of voltage and current. The output of the power supply is disabled. The power supply is in constant voltage mode when the annunciator blinks. The power supply is in constant current mode when the annuciator blinks. Keysight U8001A/U8002A User’s and Service Guide... -
Page 25: Description
General Information Description The Keysight U8001A/U8002A single output DC power supplies are compact, general purpose bench supplies that are suitable for either bench or rack-mounted operations. These power supplies feature linear power supply performance and capable usabilities, making them ideal for power systems applications. - Page 26 Front panel bind ing posts are available to connect load wires for bench operation. Floating the power supply output more than ±240 Vdc from the chassis WARNING presents an electric shock hazard to the operator. Keysight U8001A/U8002A User’s and Service Guide...
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Page 27: Installation
Keep the original packing materials in case the power supply has to be returned to Keysight Technologies in the future. If you return the power supply for service, attach a tag identifying the owner and model number. Also include a brief description of the problem. -
Page 28: Cooling And Location
0 °C to 40 °C. Power supply loading is derated from 40 °C to 55 °C. A fan cools the power supply by drawing air through the sides and exhausting it out the back. Using a Keysight rack-mount will not impede the flow of air. Bench operation Your power supply must be installed in a location that allows sufficient space at the sides and rear of the power supply for adequate air circulation. -
Page 29: Output Connections
The voltage drops across the load wires should be limited to less than 2 V. Refer to the American Wire Gauge (AWG) standard to calculate the voltage drop for some commonly used AWG wire copper. Keysight U8001A/U8002A User’s and Service Guide... - Page 30 General Information THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight U8001A/U8002A User’s and Service Guide...
- Page 31 You have now learned how to install the power supply. You were also briefly introduced to the front panel keys and their functionality from previous chapter. This chapter shows you the operations and features for the U8001A/U8002A single output DC power supplies.
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Page 32: Operations And Features
3 Ad just for the desired output voltage. – Press on the “Voltage/Current” button. When seeing the voltage value, “V” blinks, turn the knob to adjust for the desired output voltage value. Keysight U8001A/U8002A User’s and Service Guide... - Page 33 Verify that the power supply is in constant voltage mode. Ensure that the NOTE constant voltage (CV) annunciator is on. If the constant current (CC) annunciator is on instead, choose a higher current limit. Keysight U8001A/U8002A User’s and Service Guide...
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Page 34: Constant Current Operation
4 Ad just for the desired voltage limit. – Press on the “Voltage/Current” button. When seeing the voltage value, “V” blinks, turn the knob to adjust for the desired voltage limit value. Keysight U8001A/U8002A User’s and Service Guide... - Page 35 Verify that the power supply is in constant current mode. Ensure that the NOTE constant current (CC) annunciator is on. If the constant voltage (CV) annunciator is on instead, choose a higher voltage limit. Keysight U8001A/U8002A User’s and Service Guide...
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Page 36: Memory Operations
Operations and Features Memory Operations For Keysight U8001A/U8002A single output DC power supplies, up to three operating states can be stored in non-volatile storage locations. The storage feature remembers the voltage and current limit value settings, OVP /OCP On/Off states, and OVP/OCP trip levels. The following steps show you how to store and recall an operating state. - Page 37 3 Press on the “Memory” button if you want to use the shown settings as the current operating settings – The M1, M2 and M3 annunciators will be turned off. To cancel the operation, allow the unit to idle for five seconds. NOTE Keysight U8001A/U8002A User’s and Service Guide...
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Page 38: Programming Over Voltage Protection
3 Press on the “Over Voltage” button again to end the ad justment and enable the OVP. – Display will show “donE”. – The OVP annunciator will be turned on. To cancel the operation, allow the unit to idle for five seconds. NOTE Keysight U8001A/U8002A User’s and Service Guide... - Page 39 SCR will continuously sink a large current from the source and possibly damaging the power supply. To avoid this, a diode must be connected in series with the output as shown in Figure 3-1. Keysight U8001A/U8002A User’s and Service Guide...
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Page 40: Figure 3-1 Recommended Protection Circuit For Battery
Operations and Features Figure 3-1 Recommended protection circuit for battery charging Keysight U8001A/U8002A User’s and Service Guide... -
Page 41: Programming Over Current Protection
3 Press on the “Over Current” button again to end the ad justment and enable the OCP. – Display will show “donE”. – The OCP annunciator will be turned on. To cancel the operation, allow the unit to idle for five seconds. NOTE Keysight U8001A/U8002A User’s and Service Guide... - Page 42 – The display will show “TRIP”. 2 To clear the OCP trip conditon, press on the “Over Current” button again. If OCP trip persists, decrease the current limit settings to clear the tripping. NOTE Keysight U8001A/U8002A User’s and Service Guide...
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Page 43: Keylock Operation
1 Press and hold down the “Lock/Unlock” button for three seconds. 2 When the “Lock/Unlock” button is being held down, the display will show “HOLD” until the keylock is disabled. 3 After the keylock is disabled, the LOCK annunciator will be turned off. Keysight U8001A/U8002A User’s and Service Guide... -
Page 44: Backlight Operation
To turn on the backlight 1 Press on the “Back Light” button. The backlight will be turned on. To turn off the backlight 1 Press on the “Back Light” button. The backlight will be turned off. Keysight U8001A/U8002A User’s and Service Guide... -
Page 45: System Related Operations
If the test fails, the display will show “Err” with the error code. See Appendix A: NOTE List of Error Codes for more information. Keysight U8001A/U8002A User’s and Service Guide... -
Page 46: Extending The Voltage And Current Range
This will happen until the output voltage equals the output of the other supply, and the other supply will remain in constant voltage operation; only delivering that fraction of rated output current that is necessary to fulfill the total load demand. Keysight U8001A/U8002A User’s and Service Guide... -
Page 47: Specifications And Characteristics
Keysight U8001A/U8002A Single Output DC Power Supplies User’s and Service Guide Specifications and Characteristics For the Specifications and Characteristics of the U8001A/U8002A Single Output DC Power Supplies, refer to the datasheet at http://literature.cdn.keysight.com/litweb/pdf/5989-7182EN.pdf. - Page 48 Specifications and Characteristics THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight U8001A/U8002A User’s and Service Guide...
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Page 49: Service Guide
Constant Current (CC) Verification Voltage Calibration Current Calibration This chapter contains service information for the U8001A/U8002A single output DC power supplies, including warranty information, general diassemble, verification steps to troubleshoot the connectivity and functionality, detailed calibration procedures for your power supply, related documentation and Keysight contacts. -
Page 50: Equipment Warranty
Types of service available If your instrument fails during the warranty period, Keysight Technologies will replace it under the terms of your warranty. After your warranty expires, Keysight offers repair by unit exchange service at competitive prices. Extended service contracts Many Keysight products are available with optional service contracts that extend the covered period after the standard warranty expires. -
Page 51: Repackaging For Shipment
Service Guide Repackaging for shipment If the unit is to be shipped to Keysight for service or repair, be sure to: – Attach a tag to the unit identifying the owner and indicating the required service or repair. Include the model number and full serial number. -
Page 52: Replacement Parts
The parts lists are divided into the following sections. – Parts are listed in alphanumeric order according to their reference designators – The parts lists include a brief description of each part with applicable Keysight part number. To order replaceable parts You can order replaceable parts from Keysight using the Keysight part number. -
Page 53: Troubleshooting
Fuse 4.0 A T for 100 Vac and 115 Vac 2110-0006 Fuse 2.0 A T for 230 Vac U8002A 2110-0722 Fuse 6.25 A T for 100 Vac and 115 Vac 2110-1425 Fuse 2.8 A T for 230 Vac Keysight U8001A/U8002A User’s and Service Guide... -
Page 54: Line Voltage Conversion
3 Remove the voltage selector 4 Replace the correct fuse and orientate the PCB based on the PCB using a flat-blade correct voltage. screwdriver. Keysight U8001A/U8002A User’s and Service Guide... -
Page 55: Orientation Of The Voltage Selector Ac Inlet
100 indication needs to be in this 115 indication needs to be in this orientation orientation 230 V 230 indication needs to be in this orientation Figure 5-1 Orientation of voltage selector AC inlet in different voltage selection Keysight U8001A/U8002A User’s and Service Guide... -
Page 56: Self-Test Procedures
Verify that the correct power-line voltage setting is selected. Also, ensure that all terminal connections are removed while the self-test is performed. Please refer to Appendix A: List of Error Codes for list of error codes. Keysight U8001A/U8002A User’s and Service Guide... -
Page 57: Performance Verification And Calibration
The calibration procedures show how to make voltage and current adjustment on the power supply. Keysight Technologies calibration services When your instrument is due for calibration, contact your local Keysight Service Center for a low-cost recalibration. Calibration interval One year interval is recommended for most applications. -
Page 58: Recommended Test Equipment
– Current range: 5 A response time – Open and Short switches – Transient On/Off AC Power Source Capable of supplying Keysight 6813B Functions as variable voltage transformer 90 Vac to 250 Vac Keysight U8001A/U8002A User’s and Service Guide... -
Page 59: Test Consideration
List of equipment (continued) Equipment Requirement(s) Recommended model Purpose Used Resistive Load (R – 10 Ω/90 W (for U8001A) Measures ripple and noise – 6 Ω/150 W (for U8002A) Current Monitoring – 0.01 Ω ± 0.1% ISOTEK Co. Current monitoring... -
Page 60: Measurement Techniques
Test setup Most tests are performed at the front terminals as shown below. Measure the DC voltage directly at the positive (+) and negative (–) terminals on the front panel. Figure 5-2 Test setups Keysight U8001A/U8002A User’s and Service Guide... -
Page 61: Figure 5-3 General Measurement
To avoid mutual coupling effects, each measuring device must be connected directly to the output terminals by separate pairs of leads. Figure 5-3 General measurement Keysight U8001A/U8002A User’s and Service Guide... - Page 62 Substitution of the electronic load requires minor changes to the test procedures in this chapter. Keysight U8001A/U8002A User’s and Service Guide...
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Page 63: Constant Voltage (Cv) Verification
13 When the power supply is in meter mode, record the voltage reading displayed on the front display of the power supply. This value should be within the limit of V ± 0.125 V. Keysight U8001A/U8002A User’s and Service Guide... - Page 64 5 Operate the electronic load in constant current mode and set its current to 3 A for U8001A and 5 A for U8002A. Ensure that the power supply is in CV mode. If not, adjust the electronic load so that the current drops slightly until the power supply is in CV mode.
- Page 65 6 Operate the electronic load in constant current mode and set its current to 3 A for U8001A and 5 A for U8002A. Ensure that the power supply is in CV mode. If not, adjust the electronic load so that the output current drops slightly until the power supply is in CV mode.
- Page 66 “sampling region” (50 ms time range) – Enable 20 MHz cut off frequency for better high frequency cut-off – AC coupling – Enable Auto-triggering 8 Allow the scope run for a few seconds to generate enough measurement points. Keysight U8001A/U8002A User’s and Service Guide...
- Page 67 11 Disconnect the oscilloscope and connect an RMS voltmeter in its place. Do not disconnect the 50 termination. Divide the reading of the RMS voltmeter Ω by 10. The result should not exceed the RMS limits of 1 mV Keysight U8001A/U8002A User’s and Service Guide...
- Page 68 7 Adjust the oscilloscope to display transients as shown in Figure 5-4. Note that the pulse width (t2–t1) of the transients at 15 mV from the base line is no more than 50 µs for the output. Keysight U8001A/U8002A User’s and Service Guide...
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Page 69: Figure 5-4 Graph Of Load Transient Response
Service Guide Figure 5-4 Graph of load transient response Keysight U8001A/U8002A User’s and Service Guide... -
Page 70: Constant Current (Cc) Verification
8 Disable the output. 9 When the power supply is in limit mode, program the output current to full rated value, i.e. 3 A for U8001A and 5 A for U8002A. 10 Enable the output. 11 Wait for a few seconds for the output of the power supply to settle. Make sure that the power supply is in CC mode. - Page 71 ) by its resistance to convert to amps and record this value (I ). This value should be within the limit of: – U8001A: 3 A ±30.5 mA – U8002A: 5 A ±37.5 mA 13 When the power supply is in meter mode, record the current reading displayed on the front display of the power supply.
- Page 72 3 When the power supply is in limit mode, program the output voltage to maximum programmable value and output current to full rated value, i.e. 3 A for U8001A and 5A for U8002A. 4 Enable the output. 5 Operate the electronic load in constant voltage mode and set its voltage to 30 V.
- Page 73 3 Power on the power supply. 4 When the display is in the limit mode, program the output voltage to maximum programmable value and output current to full rated value, i.e. 3 A for U8001A and 5 A for U8002A.
- Page 74 2 Power on the power supply. 3 When the display is in the limit mode, program the output voltage to maximum programmable value and output current to full rated value, i.e. 3 A for U8001A and 5 A for U8002A.
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Page 75: Voltage Calibration
– Use the knob to enter the reading obtained from the DVM. – Press the “Memory” button to save the changes and move to the next calibration point. You will be able to perform this if the power supply is in CV mode. Keysight U8001A/U8002A User’s and Service Guide... - Page 76 – Display will show “donE” for a few seconds and the power supply will enter the current calibration mode. If you do not wish to continue with the current calibration, you may now turn off NOTE the power supply to exit the calibration mode. Keysight U8001A/U8002A User’s and Service Guide...
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Page 77: Current Calibration
– Use the knob to enter the computed value (DVM reading divided by shunt resistance). – Press the “Memory” button to save the changes and move to the next calibration point. You will be able to perform this if the power supply is in CC mode. Keysight U8001A/U8002A User’s and Service Guide... - Page 78 – Turn off the power supply to exit the calibration mode. 8 Toggle between calibration modes – Along the calibration process, you can toggle between voltage calibration mode and current calibration mode by pressing the “Voltage/Current” button. Keysight U8001A/U8002A User’s and Service Guide...
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Page 79: Appendix
Keysight U8001A/U8002A Single Output DC Power Supplies User’s and Service Guide Appendix Appendix A: List of Error Codes... -
Page 80: Appendix A: List Of Error Codes
Descriptions Flash read/write failed Calibration failed for DAC CV Calibration failed for DAC CC Calibration failed for ADC CV Calibration failed for ADC CC Calibration failed for DAC OV Calibration failed for DAC OC Keysight U8001A/U8002A User’s and Service Guide... - Page 81 This information is subject to change without notice. Always refer to the Keysight website for the latest revision. © Keysight Technologies 2008-2017 Edition 8, September 2, 2017 Printed in Malaysia *U8001-90001*...
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