Unit UTL8200 Series User manual

UTL8200 Series Electronic Load
User Manual

UTL8200 User Manua
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Preface
Thank you for purchasing this brand new product. In order to use this product safely and
correctly, please read this manual thoroughly, especially the safety notes.
After reading this manual, it is recommended to keep the manual at an easily accessible
place preferably close to the device, for future reference.
Copyright Information
Uni-Trend Technology (China) Co., Ltd. all rights reserved.
UNI-T is the registered trademark of Uni-Trend Technology (China) Co., Ltd.
UNI-T products are protected by patent rights in China and other countries, including
issued and pending patents. Uni-Trend reserves the rights to any product specification
and pricing changes.
Uni-Trend reserves all rights. Information in this manual supersedes all previously
published versions. No part of this manual may be copied, extracted or translated by any
means without the prior permission of Uni-Trend.
Warranty Service
The instrument has a warranty period of one year from the date of purchase. If the
instrument is damaged due to improper operation by the user during the warranty period,
the maintenance fee and the costs caused by the maintenance shall be borne by the user,
and the instrument shall be maintained by the company for life.
If the original purchaser sells or transfers the product to a third party within one year from
the date of purchase of the product, the warranty period of one year shall be from the date
of the original purchase from UNI-T or an authorized UNI-T distributor. Power cords,
accessories and fuses, etc. are not included in this warranty.
If the product is proved to be defective within the warranty period, UNI-T reserves the
rights to either repair the defective product without charging of parts and labor, or
exchange the defected product to a working equivalent product (determined by UNI-T).
Replacement parts, modules and products may be brand new, or perform at the same
specifications as brand new products. All original parts, modules, or products which were
defective become the property of UNI-T.
The “customer” refers to the individual or entity that is declared in the guarantee. In order
to obtain the warranty service, "customer" must inform the defects within the applicable
warranty period to UNI-T, and perform appropriate arrangements for the warranty service.

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The customer shall be responsible for packing and shipping the defective products to the
designated maintenance center of UNI-T, pay the shipping cost, and provide a copy of the
purchase receipt of the original purchaser. If the product is shipped domestically to the
location of the UNI-T service center, UNI-T shall pay the return shipping fee. If the product
is sent to any other location, the customer shall be responsible for all shipping, duties,
taxes, and any other expenses.
Guarantee Limit
This warranty shall not apply to any defects, malfunction or damages caused by
accidental, machine parts’wear and tear, using outside the product’s specifications,
improper use, and improper or lacking of maintenance. UNI-T under the provisions of this
warranty has no obligation to provide the following services:
a) Any repair damage caused by the installation, repair, or maintenance of the product by
non UNI-T service representatives;
b) Any damage caused by improper use or connection to an incompatible device;
c) Any damage or malfunction caused by the use of a power source not provided by
UNI-T;
d) Any maintenance on altered or integrated products (if such alteration or integration
leads to an increase in time or difficulty of product maintenance).
This warranty is written by UNI-T for this product and it is used to substitute any other
express or implied warranties. UNI-T and its distributors do not offer any implied
warranties for merchantability or applicability purposes. For violation of this guarantee,
UNI-T is responsible for the repair or replacement of defective products as the only and
complete remedy available to customers. Regardless of whether UNI-T and its distributors
are informed that any indirect, special, incidental, or consequential damage may occur,
the UNI-T and its distributors shall not be responsible for any of these damages.
Safety Information
Warning Danger: To avoid electric shock and personal injury, please follow
the following guidelines.
Disclaimer
Please read the following safety information carefully before using the instrument. UNI-T

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will not be liable for the personal injury and property losses caused by the user's failure to
comply with the following terms.
Correct connection of ground wire
To avoid electric shock, please use the provided cable to connect and make sure that the
product is properly grounded before use.
Operating voltage
Please ensure that the main supply does not exceed 10% of rated operating range to
prevent product damage.
Use the correct power cord
Only use the dedicated UNI-T power cord to connect the measured power supply and the
electronic load to ensure that there is no overheat by short-circuit current, otherwise
electric shock may occur.
Input voltage
Please notice the product symbols before connecting. The instrument supports 2 kinds of
AC input method: 110V and 220V. Please check if the switch of load matches with the
input power source and if the fuse is correctly installed.
Please do not use the instrument in inflammable and explosive environment.
Do not use or store the instrument in high temperature, high humidity, flammable,
explosive and strong magnetic field environments.
Safety symbols
Danger
Power on
Grounding
Power off
Protective grounding
Chassis
Signal ground
Warning
Environment-Friendly Use Period (EFUP)
Waste Electrical and Electronic Equipment (WEEE) Instruction 2002/96/EC
This product contains certain hazardous substances and
can be used safely during its environmental-friendly use
period (EFUP) of 40 years, as shown in the symbol on the
left. If the specified time is exceeded, the product should
be recovered.
Do not dispose the product and its accessories in trash bin.

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Table of Contents
Preface.................................................................................................................................2
Copyright Information ..........................................................................................................2
Warranty Service .................................................................................................................2
Guarantee Limit ...................................................................................................................3
Safety Information................................................................................................................3
1. Product Overview ............................................................................................................6
1.1 Product Series........................................................................................................6
1.2 Front Panel.............................................................................................................8
1.3 Rear Panel..............................................................................................................9
2. Inspection and Installation.............................................................................................10
2.1 Packing List..........................................................................................................10
2.2 Requirements of Power Supply............................................................................10
2.3 Operating Environment ........................................................................................11
2.4 Cleaning................................................................................................................11
3. Measurement Display Interface.....................................................................................11
3.1 Power on and Run................................................................................................12
3.2 Measurement Interface ........................................................................................12
3.2.1 Introduction of Screen Display...................................................................12
3.2.2 Measurement Interface Display.................................................................13
3.2.3 Status Information......................................................................................13
3.2.4 Running Indicator.......................................................................................13
4. Measurement Settings...................................................................................................13
4.1 Mode Setting and Test..........................................................................................14
4.1.1 Constant Current Test................................................................................14
4.1.2 Constant Voltage Test................................................................................15
4.1.3 Constant Resistance Test ..........................................................................16
4.1.4 Constant Power Test..................................................................................16
4.1.5 Dynamic Test..............................................................................................17
4.1.6 List Test......................................................................................................19
4.1.7 Battery Test ................................................................................................20
4.2 Short Circuit Test..................................................................................................21
4.3 Parameter Input and Operating Control...............................................................22
4.4 Alarm Prompts......................................................................................................22
4.5 Local/Remote .......................................................................................................23
5. System Configuration Page (Menu)..............................................................................23
5.1 System Configuration...........................................................................................24
5.2 Parameter Setting.................................................................................................25
5.3 File........................................................................................................................26
5.4 Instrument Info......................................................................................................26
6. Communication..............................................................................................................26
6.1 Communication Interfaces....................................................................................26
6.2 Communication Settings ......................................................................................27

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1. Product Overview
Product Series (Features and Technical Specifications)
Front Panel
Rear Panel
1.1 Product Series
UTL8200 series DC electronic load contains 2 models: UTL8211 and UTL8212.
Model
Channel quantity
Measurement range
Voltage
Current
Power
UTL8211
Single channel
0~150V
0~40A
0~400W
UTL8212
Dual channel
0~150V
0~20A
0~200W
The UTL8200 series electronic load has a 2.8 inch LCD display. It is convenient to operate,
stylish in appearance, and supports dual-channel independent testing. The electronic load
has a wide power measurement range, the voltage and current measurement speed is up
to 40 kHz, the test resolution can reach 1mV/1mA, and it has various test functions and
modes for users to choose. The instrument can be configured with RS232 communication
module to flexibly meet on-site test conditions, and is convenient to connect with
automated production lines and automatic test systems (ATS).
1.1.1 Features
Four basic test modes: CC/CV/CR/CP
High resolution of 1mV/1mA
Minimum rise time of dynamic current test: 500us
Voltage and current measurement speed up to 40kHz
Multi-mode battery discharge test
List mode, support automatic test
Independent short-circuit test function
Protections of over-voltage/ under-voltage/ over-current/ over-power/ overheat/ anti-
reverse connection
Support RS232 communication interface
Configured with upper computer software for remote control and monitoring
Power-off memory function
Intelligent temperature-controlled fan
Chinese/English interface

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1.1.2 Technical Specifications
Recommended calibration frequency: once/year
AC power input level: (the switch on the rear panel can choose 110V or 220V)
110V position: 110V±10% 50~60Hz
220V position: 220V±10% 50~60Hz
Range
Resolution
Precision
Voltage protection
≥Set value×1.1, immediate protection, max 165V
Temperature protection
≥95℃
Power readback
T1&T2
Precision
Slope
Range
Resolution
Precision
Range
Resolution
Precision
UTL8211
UTL8212
Model
Range
Resolution
Rated value
CV mode
CC mode
CR mode
Single channel
Range
0~150V
0~4A, 0~40A
400W
Channel quantity
Voltage
Current
Power
Range
Resolution
Precision
Range
Resolution
CP mode
400W
10mW
±(0.05%+0.1% FS)
0~2A, 0~20A
1mA, 10mA
± ( 0.05% + 0.05%FS )
16 bit
Precision
Precision
Dual channel
0~150V
0~2A, 0~20A
2×200W
0~18V, 0~150V
1 mV, 10 mV
Resolution
Precision
0.05Ω~7.5kΩ
0~4A, 0~40A
10mW
0.1% + 0.5%FS
0~18V, 0~150V
1mV, 10mV
0.1% + 0.5%FS
200W
0.001~0.15 A/μS
± ( 0.05% + 0.1%FS )
0~4A, 0~40A
0~2A, 0~20A
Dynamic current
100μS~3600S
5 μS±100 ppm
Dynamic mode
Voltage readback
Current readback
1mA, 10mA
± ( 0.05% + 0.1%FS )
400W
200W
10mW
± ( 0.1% + 0.5%FS )
Basic protection
Power protection
Current protection
≥Set value×1.01, delay protection, max 404W
≥Set value×1.1, immediate protection, max
≥Set value×1.01, delay protection, max 40.4A
≥Set value×1.1, immediate protection, max 44A
≥Set value×1.01, delay protection, max 202W
≥Set value×1.1, immediate protection, max 220W
≥Set value×1.01, delay protection, max 20.2A
≥Set value×1.1, immediate protection, max 22A
Product weight
≥Set value×1.01, delay protection, max 152V
3.6kg (net weight)
Product size (Width*Height*Depth)
88mm×174mm×300mm

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1.2 Front Panel
Figure 1-2 UTL8212 Front Panel (Dual Channel)
No.
Item
Description
①
LCD display
Channel 1
It is used to display the operating status, measurement
parameters and mode of channel 1.
②
LCD display
Channel 2
It is used to display the operating status, measurement
parameters and mode of channel 2.
③
Buttons
They are used to select test modes (CC, CV, CR, CP and more);
In other interfaces, follow the on-screen instructions to perform
specific operating functions
④
Pulse knob
It is used to adjust the parameters or move cursor in the menu.
⑤
Power button
Press it to power on/off.
⑥
Channel 1
Input terminals
They are used to connect power supply. Please do not inversely
connect to prevent damage.
⑦
Channel 2
Input terminals
They are used to connect power supply. Please do not inversely
connect to prevent damage.

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1.2.1 Buttons
Item
Description
Shift
Press to operate functions printed above buttons
Direction buttons
They are used to move cursor or adjust the selected value.
Enter
It is used to confirm/modify the selected items or parameters.
Local
Remote/Local: it is used to select local or remote control mode.
ESC
Return to the previous menu
Mode
It is used to set the operating mode.
CH
It is used to switch channel (UTL8212 only).
ON1/ON2
Load input control: ON/OFF
1.2.2 Shortcuts
The buttons on the panel can be used together with the Shift button to realize the
functions marked above the buttons. Press Shift first, and then press other buttons.
Buttons
Description
Shift+←(Save)
Save list files
Shift+↑(Manual)
Switch trigger mode
Shift+→(Short)
Short circuit test
Shift+ ESC (Delete)
Delete list files
Shift+ Enter (Result)
View list test results
Shift+ Mode (Menu)
System setting interface
Shift+↓(Trigger)
Manual trigger
1.3 Rear Panel

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No.
Item
Description
1
AC220/110V socket
AC power supply input socket (with fuse)
2
AC220/110V transfer switch
Voltage position switch of AC power supply
3
RS232 interface
External communication interface to realize
the remote control with the load
2. Inspection and Installation
Packing List
Requirements of Power Supply
Operating Environment
Cleaning
2.1 Packing List
Before using the instrument, please first:
1. Check whether the product’s appearance is damaged, scratched or has other defects;
2. Check whether the accessories are missing according to the packing list.
If it is damaged or the accessories are missing, please contact UNI-T Instrument Sales
Department or the distributor immediately.
Items
Quantity
Remarks
DC electronic load
1
The model is subject to the actual
order.
Power Cord
1
Use only a specified power cord
which is authorized in the country of
use.
250VA/0.5A spare fuses
2
Note: 110V input voltage only
User manual
1
Users can download it from UNI-T’s
official website.
2.2 Requirements of Power Supply
UTL8200 series can only be used in following conditions:
Parameters
Requirements
Voltage
AC 220/110 (±10%)V
Frequency
50/60Hz
Power
50W
Fuse
AC220V input voltage: 250V/0.25A
AC110V input voltage: 250V/0.5A