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Keysight EL30000 Series, Service Manual

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Keysight EL30000 Series Service Manual Download Page 7

1

Service and Maintenance

Specifications and Characteristics

General Information

Troubleshooting

Self-Test Procedures

User Replaceable Parts

Battery Replacement

Disassembly

This chapter provides the specifications and service information on
cleaning, troubleshooting, repair, and replaceable parts of the EL30000
Series. This chapter also explains how to assemble and disassemble the
EL30000 Series.

Keysight EL30000 Series Service Guide

7

Summary of Contents for EL30000 Series

Page 1: ...Service Guide EL30000 Series DC Electronic Loads ...

Page 2: ...emoving Installing the knob 12 Installing the strap handler 12 Removing Installing the GPIB module EL34143A and EL34243A only 12 2 Verification and Adjustments 13 Performance Verification 14 Recommended test equipment 14 Test considerations 14 Measurement techniques 15 Verification Test Setup 15 Constant Voltage CV verification 16 Constant Current CC verification 17 Constant Resistance CR verifica...

Page 3: ...Saving calibration data 32 Calibration auto save 32 Calibration Test Setup 32 Calibration procedure 33 Save the calibration data 37 Keysight EL30000 Series Service Guide 3 ...

Page 4: ...TTED BY APPLICABLE LAW KEYSIGHT DISCLAIMS ALL WARRANTIES EITHER EXPRESS OR IMPLIED WITH REGARD TO THIS MANUAL AND ANY INFORMATION CONTAINED HEREIN INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE KEYSIGHT SHALL NOT BE LIABLE FOR ERRORS OR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES IN CONNECTION WITH THE FURNISHING USE OR PERFORMANCE OF THIS D...

Page 5: ...ed from all providers of commercial computer software pursuant to the FAR and the DFARS and are set forth specifically in writing elsewhere in the EULA Keysight shall be under no obligation to update revise or otherwise modify the Software With respect to any technical data as defined by FAR 2 101 pursuant to FAR 12 211 and 27 404 2 and DFARS 227 7102 the U S government acquires no greater than Li...

Page 6: ...ta Do not proceed beyond a CAUTION notice until the indicated conditions are fully understood and met A WARNING notice denotes a hazard It calls attention to an operating procedure practice or the like that if not correctly per formed or adhered to could result in personal injury or death Do not proceed beyond a WARNING notice until the indicated con ditions are fully understood and met 6 Keysight...

Page 7: ...s User Replaceable Parts Battery Replacement Disassembly This chapter provides the specifications and service information on cleaning troubleshooting repair and replaceable parts of the EL30000 Series This chapter also explains how to assemble and disassemble the EL30000 Series Keysight EL30000 Series Service Guide 7 ...

Page 8: ...tain the original shipping carton for return shipments Repackaging for shipment Ensure the following to ship the unit to Keysight for service or repair Attach a tag to the unit identifying the owner and indicating the required service or repair Include the model number and full serial number Place the unit in its original container with appropriate packaging material Secure the container with stro...

Page 9: ...rials from the immediate work area Troubleshooting Before troubleshooting or repairing the instrument make sure the failure is in the instrument rather than any external connections Also make sure that the instrument was accurately calibrated within the last year see Calibration Adjustment Procedures Calibration Interval for details Perform the following verifications if the unit is inoperative Ve...

Page 10: ... ten years Note that battery life will be reduced if the instrument is stored for a prolonged period at temperatures above 40 degrees Celsius The battery type is Panasonic CR 2032 Replacing the Battery 1 Remove the front panel 2 The battery is located at the front panel PC board 3 Use a flat bladed screwdriver and carefully pry up on the side of the battery 4 Install the new battery Make sure that...

Page 11: ...ving the front panel Steps Instructions Visual 1 Remove the side trims from the front panel 2 Remove four Pozi screws from the front panel using a Pozi M4 bit 3 Pull out the front panel 4 To install back the front panel perform the above steps in reverse order Keysight EL30000 Series Service Guide 11 ...

Page 12: ...ob Installing the strap handler Steps Instructions Visual 1 Insert the stainless steel belt into the PVC strap 2 Insert the stainless steel gaskets to both side of the stainless steel belt 3 Cover both side with the plastic cap 4 Secure both side of the strap handle with 2 M5 10 screws Removing Installing the GPIB module EL34143A and EL34243A only Refer to the EL30000 Series User s Guide for detai...

Page 13: ...ocedures This chapter contains the performance verification procedures which verify that the EL30000 Series is operating within its published specifications This chapter also provides information on adjustments performed after a performance verification fails Keysight EL30000 Series Service Guide 13 ...

Page 14: ...t monitor 10 A 1 Ω TC 4 ppm C 100 A 0 01 Ω TC 4 ppm C Guildline 9230A 10 Guildline 9230A 100 Power Supplies 150 V 60 A 350 W minimum Keysight N7977A 160 V 12 5 A and Keysight N7971A 20 V 100 A Test considerations Ensure that the calibration ambient temperature is stable at 23 C 5 C Ensure ambient relative humidity is less than 70 Allow a 30 minutes warm up period before verification or calibration...

Page 15: ...d leads and connections It has special current monitoring terminals inside the load connection terminals Connect the voltmeter directly to these current monitoring terminals Power Supply The power supply is used to supply power for both verification and calibration procedure Verification Test Setup Front panel connection Connect all leads to the input terminals as shown in the following figure The...

Page 16: ...inimum voltage 6 Program the load settings as described in the test record form for Voltage Programming Readback High range Maximum voltage 7 Record the voltage reading from the DMM and the voltage measured over the interface The readings should be within the limits specified in the test record form for the appropriate model under Voltage Programming Readback High range Maximum voltage Low range 8...

Page 17: ...igh range Maximum current 7 Divide the voltage drop DMM reading across the current shunt by the shunt resistance to convert to amps and record this value Iin Also record the current reading measured over the interface The readings should be within the limits specified in the test record form for the appropriate model under Current Programming Readback High range Maximum current Medium range EL3414...

Page 18: ...or the appropriate model under Current Programming Readback Low range Minimum current 14 Program the load settings as described in the test record form under Current Programming Readback Low range Maximum current 15 Divide the voltage drop DMM reading across the current shunt by the shunt resistance to convert to amps and record this value Iin Also record the current reading measured over the inte...

Page 19: ...ss the current shunt by the shunt resistance to convert to amps and record this value Iin 7 Calculate the resistance value as follows R Vin Iin Vin is the voltage measured by the second DMM Convert the input resistance R to Siemens by inverting the value S 1 R The value in Siemens should not exceed value listed in the test record under Resistance Programming Ultra High range Minimum resistance 8 P...

Page 20: ...Calculate the resistance value as follows R Vin Iin Vin is the voltage measured by the second DMM Convert the input resistance R to Siemens by inverting the value S 1 R The value in Siemens should not exceed value listed in the test record under Resistance Programming Medium range Minimum resistance 21 Program the load settings as described in the test record form under Resistance Programming Medi...

Page 21: ... reading across the current shunt by the shunt resistance to convert to amps and record this value Iin 29 Calculate the resistance value as follows R Vin Iin Vin is the voltage measured by the second DMM Convert the input resistance R to Siemens by inverting the value S 1 R The value in Siemens should not exceed value listed in the test record under Resistance Programming Low range Maximum resista...

Page 22: ...ed in the test record form 8 Divide the voltage drop DMM reading across the current shunt by the shunt resistance to convert to amps and record this value Iin Also record the current measured over the interface 9 Calculate the power as follows P Iin x Vin Vin is the voltage measured by the second DMM The readings should be within the limits specified in the test record form for the appropriate mod...

Page 23: ...n x Vin Vin is the voltage measured by the second DMM The readings should be within the limits specified in the test record form for the appropriate model under Power Programming Readback Low range Minimum power 19 Program the load settings as described in the test record form for Power Programming Low range Maximum power Program the power supply to the power supply settings described in the test ...

Page 24: ...t Current CC Tests Current Programming Readback High range Minimum current Current measured over interface Maximum current Current measured over interface Current Programming Readback Low range Minimum current Current measured over interface Maximum current Current measured over interface 0 49255 A Iin 7 45 mA 39 9728 A Iin 27 2 mA 0 049155 A Iin 0 845 mA 3 99718 A Iin 2 82 mA ________ ________ __...

Page 25: ...High Range Maximum current Current Programming Readback Low Range Minimum current Current Programming Readback Low Range Maximum current Resistance Programming High range Minimum resistance Resistance Programming High range Maximum resistance Resistance Programming Medium range Minimum resistance Resistance Programming Medium range Maximum resistance Resistance Programming Low range Minimum resist...

Page 26: ...current Current measured over interface Current Programming Readback Low range Minimum current Current measured over interface Maximum current Current measured over interface 0 4878 A Iin 9 8 mA 59 964 A Iin 33 6 mA 0 09796 A Iin 1 84 mA 5 9956 A Iin 4 2 mA 0 04985 A Iin 0 14 mA 0 59963 A Iin 0 36 mA ________ ________ ________ ________ ________ ________ ________ ________ ________ ________ ________...

Page 27: ...ck Low Range Minimum current Current Programming Readback Low Range Maximum current Resistance Programming Ultra High range Minimum resistance Resistance Programming Ultra High range Maximum resistance Resistance Programming High range Minimum resistance Resistance Programming High range Maximum resistance Resistance Programming Medium range Minimum resistance Resistance Programming Medium range M...

Page 28: ...current Current measured over interface Current Programming Readback Low range Minimum current Current measured over interface Maximum current Current measured over interface 0 4878 A Iin 9 8 mA 59 964 A Iin 33 6 mA 0 09796 A Iin 1 84 mA 5 9956 A Iin 4 2 mA 0 04985 A Iin 0 14 mA 0 59963 A Iin 0 36 mA ________ ________ ________ ________ ________ ________ ________ ________ ________ ________ ________...

Page 29: ...g Readback Low Range Minimum current Current Programming Readback Low Range Maximum current Resistance Programming Ultra High range Minimum resistance Resistance Programming Ultra High range Maximum resistance Resistance Programming High range Minimum resistance Resistance Programming High range Maximum resistance Resistance Programming Medium range Minimum resistance Resistance Programming Medium...

Page 30: ...ent process The following general procedure is recommended to complete a full calibration adjustment 1 Adhere to the test considerations See Performance Verification Test considerations for details 2 Perform the performance verification tests to characterize the instrument See Performance Verification for details 3 Unsecure the instrument for calibration See Calibration security for details 4 Perf...

Page 31: ...ery and the calibration count is not change by a power cycle or RST If Auto Save is enabled the count increments when you exit the calibration state To avoid double counting do not manually save the count with Auto Save enabled Calibration message You can use the CALibration STRing command to store a message of up to 40 characters in calibration memory For example you could store the last calibrat...

Page 32: ...es the calibration data to non volatile memory and increments the calibration count when you exit the calibration state To enable or disable the CAL auto Save feature send CAL ASAV ON or CAL ASAV OFF To query the CAL auto Save state send CAL ASAV Calibration Test Setup Front panel connection Connect all leads to the output terminals as shown in the following figure The following figures show the c...

Page 33: ...to 150 V with a current limit of 1 A Connect a DMM capable of handling 150 V in parallel with the unit s input see CV Cal Setup Turn on the output of the power supply Step Front Panel SCPI 1 Press Perform Calibration and select the input for calibration Press Cal Volt Select High range and press Next CAL VOLT LEV MIN chanlist 2 Measure the input voltage low point with the DMM Note Wait 3 minutes f...

Page 34: ...voltage low point with the DMM Note Wait 2 minutes for the voltage to stabilize before measuring the voltage with DMM 3 Enter the measured value and press Next CAL VOLT LOW reading channel 4 Measure the input voltage high point with the DMM Note Wait 3 minutes for the voltage to stabilize before measuring the voltage with DMM CAL VOLT LOW LEV MAX chanlist 5 Enter the measured value and press Next ...

Page 35: ...ize before measuring the voltage drop at the shunt resistor and calculate the shunt current I V R CAL CURR LEV POINT2 channel 5 Enter the calculated data and press Next CAL CURR reading channel 4 Measure the input current POINT 3 with the DMM Note Wait 5 minutes for the current to stabilize before measuring the voltage drop at the shunt resistor and calculate the shunt current I V R CAL CURR LEV P...

Page 36: ...l Save CAL SAVE Low range Allow the unit to sit with input ON for one minute before continuing EL33133A Set power supply to 3 V with a current limit of 4 A to prevent overcurrent to the DUT after cal ibration completed EL34143A EL34243A Set power supply to 3 V with a current limit of 0 6 A Turn on the output of the power supply Step Front Panel SCPI 1 Press Perform Calibration and select the input...

Page 37: ... Enter the calculated data and press Next CAL CURL reading channel 4 Measure the input current high point with the DMM Note Wait 1 minute for the current to stabilize before measuring the voltage drop at the shunt resistor and calculate the shunt current I V R CAL CURL LEV MAX channel 5 Enter the calculated data and press Next CAL CURL reading channel 6 Read DONE or FAIL on the display wait 30 sec...

Page 38: ...This information is subject to change without notice Keysight Technologies 2020 2021 Edition 1 February 4 2021 Printed in Malaysia EL34243 90008 www keysight com ...

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