User’s Guide
EL30000 Series
DC Electronic Loads
Notices 6
Copyright Notice 6
Manual Part Number 6
Edition 6
Published by 6
Warranty 6
Technology Licenses 6
U.S. Government Rights 7
Third Party Licenses 7
Waste Electrical and Electronic Equipment (WEEE) 7
Declarations of Conformity 7
Safety Information 8
Safety and Regulatory Information 9
Safety Considerations 9
Safety Symbols 12
Regulatory Markings 13
South Korean Class A EMC declaration: 13
Safety and EMC Requirements 13
Environmental Conditions 14
1 Getting Started 15
Product Introduction 16
Front panel at a glance (EL33133A/EL34143A) 18
Front panel at a glance (EL34243A) 19
Rear panel at a glance (EL33133A/EL34143A) 20
Rear panel at a glance (EL34243A) 21
Meter view 22
Data logger view 24
Scope view 25
Dimension diagram 26
Setup the instrument 26
Prepare Instrument for Use 27
Initial inspection 27
Standard shipped items 27
Documentation and firmware revisions 27
Recommended calibration interval 27
Load Operating Modes 28
CC mode 28
CV mode 29
CP mode 29
CR mode 30
Programming Ranges 31
Installation 33
Connecting the power cord 33
Connecting the inputs 34
Parallel connections (EL34243A only) 37
4-wire sense connection 39
Interface connections 41
Installing the optional GPIB interface (EL34143A and EL34243A only) 45
Rack mounting the instrument 46
Remote Interface Configuration 47
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Keysight EL30000 Series User's Guide
Keysight IOLibraries Suite 47
GPIB configuration 47
LAN configuration 48
Using sockets 52
More about IP addresses and dot notation 53
Remote Control 54
Web interface 54
Technical connection details 56
Use the Built-in Help System 57
View the help information for the front panel key 57
View the list of help topics 57
Firmware Update 59
Front Panel Menu Reference 60
2 General Operating Information 61
Turning the Unit On 62
Using the front panel knobs 63
View the error log 63
Controlling the Inputs 64
Step 1 - Select an input (EL34243A only) 64
Step 2 - Set the load operating mode 64
Step 3 - Set the input voltage, current, resistance, or power 64
Step 4 - Enable the input 65
Step 5 - View the input voltage and current 65
Using the Protection Function 67
Protection function 67
Configuring protection 67
Clears OVP, OCP and OPP Event 69
Specifying 2-Wire or 4-Wire Sense 70
Configuring the Input Turn-On/Turn-Off Sequence 71
Step 1 – Set the input voltage, current, power or resistance of the input channels: 71
Step 2 – Configure the turn-on turn-off delays: 71
Step 3 – Coupling selected inputs: 71
Step 4 – Use the AllInputs On and Off keys: 71
Specifying the Load Operating Mode 73
Configuring the Load Settings 74
Operating modes 74
Specifying the Operation Mode (EL34243A only) 78
Using the Digital Control Port 79
Bi-directional digital IO 79
Digital input 81
Fault output 81
Inhibit input 82
Fault/inhibit system protection 83
Trigger input 84
Trigger output 85
Input couple controls 86
Using the Sequencer Function (EL34143A and EL34243A only) 88
LIST mode 88
Step 1– Add/remove steps to/from the LIST 88
Step 2 – Configure the input sequence 89
Step 3 – Run the input sequence list 91
Keysight EL30000 Series User's Guide 3
Continuous mode 93
Step 1– Configure the sequence properties 93
Step 2 – Run the input sequence 94
Pulse mode 96
Step 1– Configure the sequence properties 96
Step 2 – Run the input sequence 97
Toggle mode 99
Step 1– Configure the sequence properties 99
Step 2 – Run the input sequence 100
Using the Data Logger Function 101
Logging data 101
Step 1 — Set the load operating mode to CC 101
Step 2 – Program the input current values 101
Step 3 – Program the sequence for the input channels 101
Step 4 – Configure the data logger traces 102
Step 5 – Configure the data logger properties 102
Step 6 – Configure and enable the DUT output accordingly 103
Step 7 – Turn on Input 1, start the sequencing and log the data 103
Step 8 – Export the data 103
Data logger view 105
Data logger marker view 106
Using the knob in data logger view 107
Data logger properties and waveform settings 108
Save the data log 112
Using the Scope Function 115
Making measurement 115
Step 1 — Set the load operating mode to CC 115
Step 2 – Program the input current values 115
Step 3 - Configure the input turn-on sequence 115
Step 4 - Configure the Scope View traces 116
Step 5 – Configure the Scope properties: 116
Step 6 – Configure and enable the DUT output accordingly 117
Step 7 – Turn on the inputs and measure the current: 117
From the remote interface: 117
Scope View 118
Scope marker view 120
Using the knob in scope view 121
Scope properties and waveform settings 122
Scope marker properties 125
Save the scope data 125
Locking/Unlocking the Front Panel 126
Capturing a Screen 126
Utilities Menu 127
Utilities Menu - Store and Recall State 127
Store Settings 128
Recall Settings 129
Power On Setting 130
Set to Defaults 130
Utilities Menu - I/O Configuration 131
LAN Settings 131
Digital IO 132
GPIB (optional) 132
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Keysight EL30000 Series User's Guide
Utilities Menu - Test / Setup 133
Calibration 133
Self-Test 133
User Settings 134
Low Range 135
Help 135
Utilities Menu - Error 137
Utilities Menu - Manage Files 138
Action 138
Browse 139
File Name 139
3 Characteristics and Specifications 140
Keysight EL30000 Series User's Guide 5
Notices
Copyright Notice
© Keysight Technologies 2020
No part of this manual may be reproduced in any form or by any means (including electronic storage and retrieval or
translation into a foreign language) without prior agreement and written consent from Keysight Technologies as
governed by United States and international copyright laws.
Manual Part Number
EL34243-90000
Edition
Edition 1, November 15, 2020
Published by
Keysight Technologies
Bayan Lepas Free Industrial Zone
11900 Bayan Lepas, Penang
Malaysia
Warranty
THE MATERIAL CONTAINED IN THIS DOCUMENT IS PROVIDED “AS IS,” AND IS SUBJECT TO BEING CHANGED,
WITHOUT NOTICE, IN FUTURE EDITIONS. FURTHER, TO THE MAXIMUM EXTENT PERMITTED 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 DOCUMENT OR OF ANY INFORMATION CONTAINED HEREIN. SHOULD KEYSIGHT AND
THE USER HAVE A SEPARATE WRITTEN AGREEMENT WITH WARRANTY TERMS COVERING THE MATERIAL IN THIS
DOCUMENT THAT CONFLICT WITH THESE TERMS, THE WARRANTY TERMS IN THE SEPARATE AGREEMENT
SHALL CONTROL.
Technology Licenses
The hardware and/or software described in this document are furnished under a license and may be used or copied
only in accordance with the terms of such license.
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Keysight EL30000 Series User's Guide
U.S. Government Rights
The Software is “commercial computer software,” as defined by Federal Acquisition Regulation (“FAR”) 2.101.
Pursuant to
government acquires commercial computer software under the same terms by which the software is customarily
provided to the public. Accordingly, Keysight provides the Software to U.S. government customers under its
standard commercial license, which is embodied in its End User License Agreement (EULA), a copy of which can be
found at http://www.keysight.com/find/sweula. The license set forth in the EULA represents the exclusive authority
by which the U.S. government may use, modify, distribute, or disclose the Software. The EULA and the license set
forth therein, does not require or permit, among other things, that Keysight: (1) Furnish technical information
related to commercial computer software or commercial computer software documentation that is not customarily
provided to the public; or (2) Relinquish to, or otherwise provide, the government rights in excess of these rights
customarily provided to the public to use, modify, reproduce, release, perform, display, or disclose commercial
computer software or commercial computer software documentation. No additional government requirements
beyond those set forth in the EULA shall apply, except to the extent that those terms, rights, or licenses are explicitly
required 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 Limited Rights as defined in FAR
27.401 or DFAR 227.7103-5 (c), as applicable in any technical data.
FAR 12.212 and 27.405-3 and Department of Defense FAR Supplement (“DFARS”) 227.7202, the U.S.
Third Party Licenses
Portions of this software are licensed by third parties including open source terms and conditions. For more
information, please contact Keysight support, http://www.keysight.com/find/assist.
Waste Electrical and Electronic Equipment (WEEE)
This product complies with the WEEE Directive marking requirement. The affixed product label (see below) indicates
that you must not discard this electrical/electronic product in domestic household waste.
Product category: With reference to the equipment types in the WEEE directive Annex 1, this product is classified as
“Monitoring and Control instrumentation” product. Do not dispose in domestic household waste.
To return unwanted products, contact your local Keysight office, or see
about.keysight.com/en/companyinfo/environment/takeback.shtml for more information.
Declarations of Conformity
Declarations of Conformity for this product and for other Keysight products may be downloaded from the Web. Go
to https://regulations.about.keysight.com/DoC/default.htm. You can then search by product number to find the
latest Declaration of Conformity.
Keysight EL30000 Series User's Guide 7
Safety Information
A CAUTION notice denotes a hazard. It calls attention to an operating procedure, practice, or the like that, if not correctly performed or adhered to, could result in damage to the product or loss of important data. Do not proceed beyond a CAUTIONnotice
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 performed or adhered to, could result in personal injury or death. Do not proceed beyond a WARNING notice until the indicated conditions are fully understood and met.
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Keysight EL30000 Series User's Guide
Safety and Regulatory Information
Safety Considerations
The following general safety precautions must be observed during allphases of operation, service, and repair of this
instrument. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates
safety standards of design, manufacture, and intended use of the instrument. Keysight Technologies assumes no
liability for the customer's failure to comply with these requirements.
BEFORE APPLYING POWER
– Verify that the product is set to match the available line voltage and all safety precautions are taken. Note the
instrument's external markings are described under Safety Symbols.
- Ensure the mains supply voltage fluctuation do not exceed ±10% of the nominal supply voltage.
GROUND THE INSTRUMENT
This product is a Safety Class I instrument (provided with a protective earth terminal). To minimize shock hazard, the
instrument chassis and cover must be connected to an electrical ground. The instrument must be connected to the
AC mains through a three-conductor power cable, with the third wire firmly connected to an electrical ground (safety
ground) at the power outlet. Any interruption of the protective(grounding) conductor or disconnection of the
protective earth terminal will cause a potential shock hazard that could result in personal injury.
DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE OR WET ENVIRONMENTS
Do not operate the device around flammable gases or fumes, vapor, or wet environments.
DO NOT OPERATE DAMAGED OR DEFECTIVE INSTRUMENTS
Instruments that appear damaged or defective should be made inoperative and secured against unintended operation
until they can be repaired by qualified service personnel.
DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT
Because of the danger of introducing additional hazards, do not install substitute parts or perform any unauthorized
modification to the instrument. Return the instrument to a Keysight Technologies Sales and Service Office for service
and repair to ensure that safety features are maintained. To contact Keysight for sales and technical support, refer to
the support links on the following Keysight website: www.keysight.com/find/assist (worldwide contact
information for repair and service).
USE THE POWER CORD PROVIDED
Use the device with the power cord provided with the shipment.
USE THE DEVICE AS SPECIFIED
If the device is used in a manner not specified by manufacturer, the device protection may be impaired.
DO NOT BLOCK VENTILATION HOLES
Do not block the rearventilation hole and keep at least 130 mm free space from the rear panel.
OBSERVE ALL DEVICE MARKINGS BEFORE CONNECTING TO DEVICE
Observe all markings on the device before connecting any wiring to the device.
TURN DEVICE OFF BEFORE CONNECTING TO INPUT TERMINALS
Turn off the device power before connecting to the input terminals.
Keysight EL30000 Series User's Guide 9
ENSURETHEREARMATINGCONNECTORIS FIRMLYSCREWED
Ensure the rear mating connector is firmly screwed to the rear input terminal. This connector comes together with the
instrument and is connected to the rear input terminal.
DONOT REMOVEREAR MATING CONNECTOR
- Do not remove the rear mating connector as it acts as safety cover to the rear input terminal.
- Rear input terminal connection must be performed with the presence of mating connector.
ENSURE COVER IS SECURED IN PLACE
Do not operate the device with the cover removed or loosened.
TURN DEVICE OFF ANDREMOVEALL CONNECTIONS BEFORE INSTALLING THEGPIB INTERFACE
Turn off the power and remove all connections, including the power cord, from the instrument prior installation of
the GPIB interface.
ENSURE PROPER AWG CABLE IS USED
Use a cable with the correct voltage and AWG rating based on the intended setup when operating the EL30000
Series DC electronic loads.
DO NOT TOUCH CABLES DURING OPERATION
Do not touch the cable while the instrument input is operational to prevent electric shock hazard and burn hazard.
DO NOT CONNECT FRONT AND REAR INPUT TERMINAL CONCURRENTLY
Do not connect the front and rear input terminal concurrently for the same input channel. Failing to observe the
connection requirement could potentially raise a fire hazard if the input current exceeding 60 A.
LETHAL VOLTAGES ANDCURRENTS
- Keep away from live circuits. This instrument operates up to 150 VDCand 60 ADCat its input terminals and
sense terminal.
- SHOCK HAZARD. Floating voltage must not exceed 240 VDC. The total voltage on the input terminal and the floating
voltage must not be more than 240 VDCfrom chassis ground.
- The input terminal is designed for DC application. Ensure that transient voltages do not exceed 480 VPKor
480 VDC.
- The connector screw terminals will be at hazardous potential when in operation.
- Personal injury on contact may result if these terminals are touched when equipment is in operation.
- To avoid injuries, always disconnect power, discharge circuits, and remove external voltage sources before any
installation.
- Installation procedures must be performed by a qualified and trained personnel on this equipment.
DONOTREMOVETHEINSTRUMENT COVER
Operating personnel must not remove instrument covers. Component replacement and internal adjustments must be
made only by qualified service personnel.
CLEANING
To prevent electric shock, unplug the unit before cleaning.
COIN BATTERY REPLACEMENT
- Be sure to use battery (KPN 1420-0942) for the coin battery replacement.
- Incorrect battery type and battery polarity used during the battery replacement can cause damage to the instrument.
- Refer to
by qualified service personnel.
EL30000 Service Guide
for coin battery replacement procedures. Battery replacement must be made only
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Keysight EL30000 Series User's Guide
CLEAN WITH DRY CLOTH
Clean the outside of the instrument with a soft, lint-free, dry cloth. Do not use detergent, volatile liquids, or chemical
solvents.
Keysight EL30000 Series User's Guide 11
Safety Symbols
Symbol Description
Caution, risk of danger (refer to the manual for specific Warning or Caution information)
Caution, risk of electric shock
Protective earth (ground) terminal.
Earth ground
Frame or chassis (ground) terminal.
Standby supply. The instrument is not completely disconnected from AC mains when switch is off.
Alternating current (AC).
Plus, positive polarity.
Minus, negative polarity.
A WARNING sign denotes a hazard. It calls attention to a procedure, practice, or the like, which, if not correctly performed
or adhered to, could result in personal injury or death. Do not proceed beyond a WARNING sign until the indicated
conditions are fully understood and met.
A CAUTION sign denotes a hazard. It calls attention to an operating procedure, or the like, which, if not correctly performed
or adhered to, could result in damage to or destruction of part or all of the product. Do not proceed beyond CAUTION sign
until the indicated conditions are fully understood and met.
A NOTE sign denotes important information. It calls attention to a procedure, practice, condition or the like, which is
essential to highlight.
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Keysight EL30000 Series User's Guide
Regulatory Markings
Symbol Description
The RCM mark is a registered trademark of the Australian Communications and Media Authority.
The CE mark is a registered trademark of the European Community. This CE mark shows that the product
complies with all the relevant European Legal Directives.
ICES/NMB-001 indicates that this ISM device complies with the Canadian ICES-001.
Cet appareil ISM est conforme a la norme NMB-001du Canada.
ISM GRP.1 Class A indicates that this is an Industrial Scientific and Medical Group 1 Class A product.
This symbol indicates the time period during which no hazardous or toxic substance elements are expected to
leak or deteriorate during normal use. Forty years is the expected useful life of the product.
This symbol is a South Korean Class A EMC Declaration. This is a Class A instrument suitable for professional use
and in electromagnetic environment outside of the home.
The CSA mark is a registered trademark of the Canadian Standards Association.
South Korean Class A EMC declaration:
Information to the user:
This equipment has been conformity assessed for use in business environments. In a residential environment this
equipment may cause radio interference.
– This EMC statement applies to the equipment only for use in business environment.
사 용 자 안 내 문
이 기기는 업무용 환경에서 사용할 목적으로 적합성평가를 받은 기기로서 가
정용 환경에서 사용하는 경우 전파간섭의 우려가 있습니다.
– 사용자 안내문은 “업무용 방송통신기자재”에만 적용한다.
Safety and EMC Requirements
This electronic load is designed to comply with the following safety and EMC (Electromagnetic Compatibility) requirements:
- Low Voltage Directive
- EMC Directive
Keysight EL30000 Series User's Guide 13
Environmental Conditions
The EL30000 Series is designed for indoor use. The table below shows the general environmental requirements for
this instrument.
Environmental condition Requirement
Temperature Operating condition: 0 °C to 40 °C
Storage condition: –40 °C to 70 °C
Humidity Operating condition: Up to 85% RH at temperature up to 40 °C (non-condensing)
Storage condition: Up to 90% RH (non-condensing)
Altitude Up to 2000 m
Pollution degree 2
Installation category II (for AC input)
Mains voltage (rms) 100 VAC to 240 VAC ±10%
Mains frequency 50/60 Hz
Acoustic noise declaration Sound pressure: Lρ < 65 dB(A) at operator position, Lρ < 70 dB(A) at bystander position
Sound power: Lw < 70 dB(A)
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Keysight EL30000 Series User's Guide
1 Getting Started
Product Introduction
Prepare Instrument for Use
Load Operating Modes
Programming Ranges
Installation
Remote Interface Configuration
Remote Control
Using the Built-in Help System
Firmware Update
Front Panel Menu Reference
This chapter gets you started with the EL30000 Series DC electronic
loads.
Keysight EL30000 Series User's Guide 15
Product Introduction
The EL30000 Series DC electronic loads are designed with superior performance in compact bench form factor.
Ideal for design/verification of consumer power supplies, batteries, battery modules, solar panels, LED drivers, as
well power converters.
The series includes single and dual inputs models:
– EL33133A: Single Input DC Electronic Load; 150 V, 40 A, 250 W
– EL34143A: Single Input DC Electronic Load; 150 V, 60 A, 350 W
– EL34243A: Dual Input DC Electronic Load; 2 x 150 V, 60 A, 300 W (total 600 W)
Features:
Clean, reliable load
– 250350 to 600 W, 0 to150 V, 0 to 60 A
– Four modes: constant voltage (CV), constant current (CC), constant power (CP), and
constant resistance (CR)
– Excellent programming/readback accuracy
– High resolution
– 2-wire or 4-wire remote sense
– Over voltage, over current, and over temperature protection
Convenient benchtop capabilities
– Dynamic transient response up to 100 kHz
– Thermal-control fan speed for lower acoustic noise
– Input parallel connections (EL34243A only)
– Front and rear input terminal
Intuitive and easy to use interfaces
– 4.3-inch LCD color display
– Color-coded channels
– Individual knobs for voltage and current input
– LAN (LXI), USB, and GPIB (optional)
Advance characterization
– Scope view
– Data logging
– Input sequencing
– Low range current measurement
– Adjustable voltage slew rate
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Keysight EL30000 Series User's Guide
The model-specific features are shown below.
Feature EL33133A EL34143A EL34243A
Power input 250 W 350 W 300 W per input, total 600 W
IO interface USB USB/LAN standard,
GPIB optional
Maximum operating voltage/current 150 V/40 A 150 V/60 A 150 V/60 A
Digital IO
Scope view
Input-parallel mode
Input sequencing
Low range current measurement
Data logging
BenchVue software
P P P
P P P
P P P
P P
P P
P P
USB/LAN standard,
GPIB optional
P
Keysight EL30000 Series User's Guide 17
Front panel at a glance (EL33133A/EL34143A)
Item Description
1 Information-packed, high contrast 4.3-inch LCD color display; easily viewable even from sharp angles
2 Vertical and Horizontal knobs
Use Vertical knob to set the input value for input 1. These knobs are active in Meter View, Scope View, Data Logger View, and
Settings page.
3 Meter View, List Run/Stop, and Scope/Datalog keys
– [Meter View] turns on the meter view for the selected input.
– [List Run/Stop] runs or stop input sequencer list on all channels simultaneously.
– [Scope/Datalog] toggles between Scope view and Data Logger view.
4 Navigation keys.
– Navigate through the control dialog windows; press [Enter] key to select a control.
5 Numeric keypad
– Enters numeric values. Press [Enter] key to complete the entry.
– Deletes the values entered into the dialog using the back key.
6 Input On key
Turns the input On or Off; input is on when the key is lit.
7 Sense terminals
8 Input terminals
9 Power key and LED indicator
Turns on the instrument. If the LED is amber, the instrument is in standby mode with AC inlet power connected, and if it is green, the
instrument is on.
10 Softkeys
Accesses the soft front panel menu.
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Keysight EL30000 Series User's Guide
Item Description
11 USB port
Allows an external USB drive to be connected to the instrument.
Front panel at a glance (EL34243A)
Item Description
1 Information-packed, high contrast 4.3-inch LCD color display; easily viewable even from sharp angles
2 Input selection keys
Selects an input to control. The lit key indicates the selected input.
Tip: When this key is selected, pressing this key again will toggle between multiple and single input view.
3 Vertical and Horizontal knobs
Set the input value for input 1 and input 2. These knobs are active in Meter View, Scope View, Data Logger View, and Settings page.
4 Meter View, List Run/Stop, and Scope/Datalog keys
– [Meter View] turns on the meter view for the selected input.
– [List Run/Stop] runs or stop input sequencer list on all channels simultaneously.
– [Scope/Datalog] toggles between Scope view and Data Logger view.
5 Navigation keys.
– Navigate through the control dialog windows; press [Enter] key to select a control.
6 Numeric keypad
– Enters numeric values. Press [Enter] key to complete the entry.
– Deletes the values entered into the dialog using the back key.
7 Input On key
Turns individual inputs On or Off; inputs are on when the key is lit.
8 Input terminals
Keysight EL30000 Series User's Guide 19
Item Description
9 Power key and LED indicator
Turns on the instrument. If the LED is amber, the instrument is in standby mode with AC inlet power connected, and if it is green, the
instrument is on.
10 All input on/off key
Turns all inputs On and Off according to the specified turn-on and turn-off delays.
11 Softkeys
Accesses the soft front panel menu.
12 USB port
Allows an external USB drive to be connected to the instrument.
Rear panel at a glance (EL33133A/EL34143A)
Item Description
1 AC inlet
2 GPIB port (EL34143A only – Option GPIB)
3 USB port (EL34143A only)
4 LAN port (EL34143A only)
5 Digital I/O terminal port (EL34143A only)
6 Fan ventilation hole
7 Input 1 terminal port with mating connector
8 Input 1 sense terminal port
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Keysight EL30000 Series User's Guide
Rear panel at a glance (EL34243A)
Item Description
1 AC inlet
2 GPIB port (Option GPIB)
3 USB port
4 LAN port
5 Digital I/O terminal port
6 Fan ventilation hole
7 Input 1 and input 2 terminal ports with mating connectors
8 Input 1 and input 2 sense terminal ports
Keysight EL30000 Series User's Guide 21
Meter view
The electronic load's front panel features a high contrast 4.3-inch LCD color display.
Press [Meter View]. This key toggles between multiple (EL34243A only) and single input view.
EL33133A/EL34143A EL34243A
Item Description
1 Input identifier (EL34243A only)
When an input is selected, the background becomes highlighted.
2 Load operating mode identifier.
Displays the selected operating mode.
CV mode: Constant voltage mode
CC mode: Constant current mode
3 Input range
Displays the input range setting.
4 Remote sense status
2wire or 4wire indicates that 2-wire or 4-wire sensing measurement is in use.
5 Input status
OFF: The input is off
CV: The input is in constant voltage mode
CC: The input is in constant current mode
UR: The input is unregulated
OV: Over-voltage protection is tripped
OC: Over-current protection is tripped
OT: Over-temperature protection is tripped
6 Interface status
: The instrument is connected to USB.
: The instrument is connected to LAN.
(blinking): The instrument is under identification mode via
remote interface.
CP mode: Constant power mode
CR mode: Constant resistance mode
CP: The input is in constant power mode
CR: The input is in constant resistance mode
CP+: Positive power limit condition has disabled the input
OV-: Negative over-voltage protection is tripped
UVI: Under-voltage inhibit protection is tripped
Inh: The input is inhibited by an external INHibit signal
SH: The input terminals are shorted
: The instrument is not connected to LAN.
(blinking): The LAN connection is at fault.
7 Slew rate
Displays the rising slew and falling slew rate
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Keysight EL30000 Series User's Guide
Item Description
8 Input delay
Displays the Over-protection delay and Input On/Off delay status/values.
9 Soft front panel menu
10 Input settings
Displays the present input value settings in voltage, ampere, ohms and watts. Use the numeric keypad or turn the front panel knob to
adjust these settings.
11 Input short indicator
Displays when input short is enabled.
12 Input meters
Displays the actual input voltage. current and power.
Keysight EL30000 Series User's Guide 23
Data logger view
Press [Scope/Data Log]. This key toggles between Data Logger view and Scope view.
Item Description
1 Data bar and time elapsed
Displays the progress of the data logger. The yellow bar indicates the visible data. Numbers to the left indicate time elapsed/total
duration.
2 Data traces
Voltage, current, or power traces. Voltage traces V1 and V2 is shown. Press Auto Scale to auto scale all traces.
3 Time/Div
Indicates the horizontal time-base setting.
4 Offset time
Indicates the time that the right gridline is offset or away from the end of the data log.
5 Grid time
Displays the time on the gridline.
6 Filename
Indicates the file to which the data is being logged.
7 Status
Indicates whether the Data Logger is logging data, done logging, or is empty.
8 Trigger Source
Indicates the trigger source for the data logger.
9 Trace controls
Identifies the voltage or current trace that will be displayed. Dashes (----) indicate that the specified trace is turned off. Select the
trace and press [Enter] to turn it on or off.
10 m1 marker
Measurement Marker 1 enabled. This can be adjusted using the Vertical knob after pressing Knob Mrk.
11 m2 marker
Measurement Marker 2 enabled. This can be adjusted using the Horizontal knob after pressing Knob Mrk.
12 Intersect point
Shows where the measurement markers intersect the waveform.
13 Measurements
Shows the calculations of the waveform data between Marker 1 and Marker 2.
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Keysight EL30000 Series User's Guide
Scope view
Press [Scope/Datalog]. This key toggles between Data Logger view and Scope view.
Item Description
1 Data bar
The highlighted area shows how much of the entire measurement is actually shown on the display.
2 Scope traces
Voltage, current, or power traces. Voltage traces V1 and V2 is shown for EL34243A. Press Auto Scale to auto scale all traces.
3 Time/Div
Indicates the horizontal time-base setting. This can be adjusted using the Horizontal knob after pressing Knob Scale.
4 Offset time
Indicates the time from the trigger point indicator to the horizontal reference. Negative values indicate horizontal reference is to the
left of the trigger point. Positive values indicate the horizontal reference is to the right of the trigger point.
5 Trigger level
Identifies the trigger level through which the waveform must pass before the scope will trigger.
6 Ground
Identifies the ground reference level for the trace. The initial vertical offset of each trace is set to a different level to prevent the traces
from overlapping.
7 Scope status
Indicates whether the scope is idle, running, or waiting for a trigger.
8 Trigger source
Identifies the trigger source and trigger level. V1 indicates a voltage level on input 1 is the trigger source.
9 Trigger mode
Identifies the trigger mode setting. This can be selected by pressing Properties > Settings.
10 Trace controls
Identifies the voltage, current, or power trace that will be displayed. Dashes (----) indicate that the specified trace is turned off. Select
the trace and press [Enter] to turn it on or off.
11 m1 marker
Measurement Marker 1 enabled. This can be adjusted using the Vertical knob after pressing Knob Mrk.
12 m2 marker
Measurement Marker 2 enabled. This can be adjusted using the Horizontal knob after pressing Knob Mrk.
Keysight EL30000 Series User's Guide 25
Item Description
13 Intersect point
Shows where the measurement markers intersect the waveform.
14 Measurements
Shows the calculations of the waveform data between Marker 1 and Marker 2.
Dimension diagram
Setup the instrument
Place the instrument's feet on a flat, smooth horizontal surface. Connect input to the front panel or connect input
and sense leads to the rear panel, being careful not to short the leads together. Attach the power cable to the rear
panel, then plug it into main power. Connect LAN, USB, or GPIB cables as desired, and you may also secure the
instrument with a security lock cable.
Before disconnecting cables and cords from the instrument, turn the instrument off using the front-panel [Power]
key and disconnect from the supply source by unplugging the detachable power cord.
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Keysight EL30000 Series User's Guide
Prepare Instrument for Use
Initial inspection
When you receive your instrument, inspect it for any obvious damage that may have occurred during shipment. If
there is damage, notify the shipping carrier and nearest Keysight Sales and Support Office immediately. Refer to
www.keysight.com/find/assist.
Until you have checked out the instrument, save the shipping carton and packing materials in case the unit has to
be returned. Check the list under Standard Shipped Items and verify that you have received these items with your
instrument. If anything is missing, please contact your nearest Keysight Sales and Support Office.
Standard shipped items
– Keysight EL33133A/EL34143A/EL34243A DC electronic load
– AC power cord
– Certificate of calibration
Shipped with the EL34143A models:
– One 10 A, 3.5 mm female 4-pin terminal I/O block connector
– One 8 A, 3.5 mm 2-pin terminal sense block connector
– One 85 A, 12 mm 2-pin mating connector
Shipped with the EL34243A model:
– One 10 A, 3.5 mm female 4-pin terminal I/O block connector
– Two 8 A, 3.5 mm 2-pin terminal sense block connector
– Two 85 A, 12 mm 2-pin mating connector
Documentation and firmware revisions
The Keysight EL30000 Series documentation listed below can be downloaded for free through our website at
www.keysight.com/find/el30000.
– Keysight EL30000 Series DC Electronic Load User's Guide. This manual.
– Keysight EL30000 Series DC Electronic Load Programming Guide
– Keysight EL30000 Series DC Electronic Load Service Guide
For the latest firmware revision and firmware update instruction, go to www.keysight.com/find/el30000.
Recommended calibration interval
Keysight Technologies recommends a one-year calibration cycle for the EL30000 Series DC electronic load.
Keysight EL30000 Series User's Guide 27
Load Operating Modes
The load operating modes for Keysight EL30000 Series DC electronic load are:
– Constant current (CC) mode
– Constant voltage (CV) mode
– Constant power (CP) mode
– Constant resistance (CR) mode
When programmed to a mode, the electronic load remains in that mode until the mode is changed or until a fault
condition, such as an overpower or over-temperature occurs.
CC mode
In this mode, the load unit willsink a current in accordance with the programmed value regardless of the input
voltage.
The heavy solid vertical line illustrates the locus of possible operating points as a function of the load current. A CC
(constant current) status flag indicates that the load current is at the specified setting. A voltage limit is not
programmable in CC mode. Also, if the DUT imposes a voltage that is above 110% of the rated input voltage, the
overvoltage protection will trip and the load's input willturn off.
Current may be programmed in one of three overlapping ranges, a Low, Medium and a High current range. The low
range provides better programming and measurement resolution at low current settings.
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Keysight EL30000 Series User's Guide
CV mode
In this mode, the load unit willattempt to sink enough current to maintain the input voltage at its programmed
value.
The heavy solid line illustrates the locus of possible operating points as a function of the load voltage. Note that in CV
mode, a current limit can be imposed. As shown by the horizontal portion of the line, the input voltage remains
regulated at its programmed setting as long as the input current remains within the current limit setting. A CV
(constant voltage) status flag indicates that the input current is within the limit settings.
When the input current reaches the current limit, the unit is no longer in constant voltage operation and the input
voltage is no longer held constant. Instead, the load unit willnow regulate the input current at its current limit
setting. A CL (current limit) status flag is set to indicate that a current limit has been reached. If the input voltage
increases until it exceeds 110% of the rated input voltage, the overvoltage protection will trip and the load's input
will turn off
Voltage may be programmed in one of two overlapping ranges, a Low and a High range. The low range provides
better programming and measurement resolution at low voltage settings.
CP mode
In this mode, the load unit willregulate the power being drawn from the DUT according to the programmed
constant-power value.
Keysight EL30000 Series User's Guide 29
The load unit regulates the input power by measuring the input voltage and current and adjusting the input power
based on data streamed from the measurement ADCs.
Power may be programmed in one of three overlapping ranges, a Low, Medium and a High power range. The low
range provides better programming and measurement resolution at low power settings. The load unit have a builtin over-power protection function that will not let you exceed 110% of the power rating of the load module (the Max
Power Contour).
CR mode
In this mode, the load unit willsink current proportional to the input voltage in accordance with the programmed
resistance.
The heavy solid line illustrates the locus of possible operating points as a function of the resistance. Resistance may
be programmed in one of three overlapping ranges - a Low, Medium, and a High resistance range. The lower ranges
provide better programming and measurement resolution at lower resistance settings. The load unit automatically
selects the resistance range that best corresponds to the resistance value that you program. If the resistance value
falls in a region where ranges overlap, the load selects the range with the highest resolution for the resistance value.
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Keysight EL30000 Series User's Guide
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