East Tester ET5300 User manual

ET5300/5301/5302/5303 Programmable
DC Electronic Load User Manual
Hangzhou Zhongchuang Electronics Co., Ltd.

Hangzhou Zhongchuang Electronics Co., Ltd.
Adress: NO. 3 Kangle Road, Gongshu District, Hangzhou,China
Postcode: 310015
Telephone: [phone] Fax: [phone]
Website: http://www.east-tester.com

Product Basic Function
ET53 series DC programmable electronic load provides 1mV/10mV, 1mA/10mA high resolution and
precision with superior performance. It is equipped with 12 common modes and complete test functions,
which can be widely used in charger, switching power supply, linear power supply, battery and other
production line testing.
Key Features:
User-friendly Design:
It adopts 3.5-inch TFT LCD screen with rich display contents;
The operation process is simple and convenient, and with visual interface display system, it is
easy to get started.
Key lock function to prevent misoperation;
High-performance load:
It provides CC, CV, CR, CP and CC+CV, CR+CV several basic measurement modes;
It provides professional battery test;
It provides professional LED test;
The Tran test mode can test the dynamic output performance of the power supply;
The scan test mode can test the continuity of power output within a certain range;
Support 4-wire measurement;
The list test mode can simulate a variety of loading status changes;
The short circuit test can be used to simulate load short circuit;
Support external trigger input;
Built-in buzzer alarm;
Maintain data storage in case of power failure;
Remote operation via USB, RS-232or 485 (optional) interfaces;
Multiple safety protection:
It provides overcurrent, overvoltage, overpower, over temperature protection. The overvoltage
and overcurrent parameters can be set flexibly, so as to effectively protect the load;
It has intelligent fan speed control function, which can effectively reduce the fan noise when it is
working.
With input polarity reverse prompt;
General technical specifications:
Power supply voltage: 220Vac±10%, 110Vac±10%, 45-65Hz
Display: 3.5-inch TFT LCD screen with resolution of 480×320
Operating temperature: 0℃to 40℃
Storage temperature: -10℃to 70℃
Relative humidity: < 80%
Interface: standard USB, RS232 o r 485(optional)
Size: 320mm×220mm×100mm (width × height × depth)
Standard accessories:
Three-core power cord 1
Powerfuse 2
Usermanual 1

Content
1. Quick Start Guide..................................................................................................1
1.1 Front panel LCD display......................................................................................1
1.2Front panel key ....................................................................................................1
1.3 Key Description...................................................................................................2
1.4 Numeric parameter settings..................................................................................2
2．Function operation...............................................................................................3
2.1 Remote/local switching........................................................................................3
2.2 System Setup .......................................................................................................3
2.3 Load Setup...........................................................................................................4
2.4 Basic mode ..........................................................................................................4
2.4.1 Constant current mode...............................................................................4
2.4.2 Constant voltage mode ..............................................................................5
2.4.3 Constant resistance mode...........................................................................5
2.4.4 Constant power mode................................................................................6
2.4.5 Constant current to constant voltage mode.................................................6
2.4.6 Constant resistance to constant voltage mode ............................................6
2.5 Tran Test..............................................................................................................7
2.6 List Test...............................................................................................................8
2.7 Scan Test ...........................................................................................................11
2.8 Battery Test .......................................................................................................12
2.9 LED Test ...........................................................................................................13
2.10 Short Circuit Test.............................................................................................14
2.12 Protection function...........................................................................................14
2.13 Trigger function ...............................................................................................14
2.14 Qualification test..............................................................................................14
2.15 Other system settings .......................................................................................15
2.15.1 Key-Lock Function................................................................................15
2.16 Communication port and External expansion port ............................................15
2.16.1 Communication port..............................................................................15
2.16.2 Expansion port ......................................................................................16
2.16.3 Current monitoring terminal ..................................................................16
Technical specifications...........................................................................................17

ET5301/5302/5303/5304 Programmable DC Electronic Load User Manual
Hangzhou Zhongchuang Electronics Co., Ltd.
1
1. Quick Start Guide
1.1 Front panel LCD display
MEAS DI SP
CC
PASS
10. 000
1. 000
SenseUnr eg
Set ：
1. 000
Of f Ti me：
10000 S
Li mi t ：
15. 000 V
3. 000 A
220. 00 W
V
A
W
10. 00
A
Icon bar: there are five types of icons on the electronic load interface
1.2Front panel key
Range-V
1 2 3 Mode
4 5 6 Enter
7 8 9 Local
0 . ESC Trigger
Range-IMenuUtilityOn/Off
It indicates keyboard lockout
It indicates remote control
It indicates fan failure
Unreg
It indicates not satisfy the set value
Sense
It indicates 4-wire measurement
PASS
It indicates PASS

ET5301/5302/5303/5304 Programmable DC Electronic Load User Manual
Hangzhou Zhongchuang Electronics Co., Ltd.
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1.3 Key Description
Key name
Function of the key
【On/Off】
Channel switch key, which is used to control the load channel status:
on/off.
【Mode】
Set the load mode.
【Utility】
For system general settings.
【Menu】
Parameter settings for non-basic mode.
【0】～【9】
Numeric key for entering numbers.
【.】
For entering the decimal point.
【ESC】
Back key or number deletion key.
【Enter】
Enter or select key. Long press for more than 3 seconds and the keyboard
will be locked. Under the locked state, some keys cannot be used.
【Local】
For switching to the local mode.
【Trigger】
Trigger key for manual trigger.
【 】、【 】
Keys used for moving the cursor left or right.
【Range-I】
Shortcut key for current range switching
【Range-V】
Shortcut key for voltage range switching
1.4 Numeric parameter settings
Numeric parameters can be set in two ways.
1. As shown in figure 1.4.1, ①Press【Enter】to enter the edit mode. ②In edit mode, press the arrow
keys【 】、【 】 to select the corresponding number of digits. ③Turn the knob to adjust the value.
④Press【Enter】o r 【Esc】to exit the edit mode. Numeric parameter setting is then completed.
Figure 1.4.1.
2．As shown in figure 1.4.2, ①press【Enter】to enter the edit mode. ②Press the numeric key to
enter the value. ③Press【Enter】to confirm and exit the edit mode. Parameter setting is then completed.

ET5301/5302/5303/5304 Programmable DC Electronic Load User Manual
Hangzhou Zhongchuang Electronics Co., Ltd.
3
When entering the value in step②: ④press【Esc】to delete the previous number until all the numbers are
deleted. ⑤When all the numbers are deleted, press 【Esc】again to exit the edit mode and end the
parameter setting.
Figure 1.4.2
2．Function operation
To ensure stable and safe operation of the load and the source to be measured, make sure that the load
and the source to be tested are connected in a red-positive and black-negative manner before using the
load to test the source to be measured. After that, first turn on the power output, and then turn on the load.
2.1 Remote/local switching
When the load is in remote operation mode, the corresponding icon will be displayed on the top of
the interface. At this time, the interface is locked, and the status and operation of the instrument can be
controlled through the commands of the upper computer, or switch back to the local operation mode by
pressing【Local】on the panel.
2.2 System Setup
Press【Utility】to enter the system menu interface, as shown in figure. 2.2.1. Rotate the knob to select
and enter the corresponding sub-menu. The operations of language setting, restore factory setting and start
settings can be completed in the system setting interface, as shown in figure 2.2.2.
Operating instructions: 1. Select the operation option by rotating the knob. 2. Press [Enter] to enter
the sub-menu interface or switch the contents of the operation option. 3. Press【Esc】to return to the
previous interface.
Figure. 2.2.1 System menu interface Figure 2.2.2 System setting interface

ET5301/5302/5303/5304 Programmable DC Electronic Load User Manual
Hangzhou Zhongchuang Electronics Co., Ltd.
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2.3 Load Setup
Load setup interface can be entered through the system menu, as shown in figure 2.3.The load range,
limit value, off-delay and other related settings can be completed in this interface.
Operating instructions: 1. Select the operation option by turning the knob. 2. Press【Enter】to switch
set options for non-numeric parameters. 3. As for the setting of numeric parameters, please refer to 1.4
Numeric Parameter Setting for details. 4. Press【Esc】to return to the previous interface.
Figure 2.3 Load setup interface
2.4 Basic mode
Electronic load can work in the following basic measurement modes: constant current mode (CC),
constant voltage mode (CV), constant resistance mode (CR), constant power mode (CP), constant current
to constant voltage mode (CC+CV), constant resistance to constant voltage mode (CC+CR). The
parameter settings for the above six modes can be done in the measurement interface. In addition, press
[Mode] on the main interface of any mode to enter the mode selection interface, as shown in figure 2.4.
Operating instructions: 1 Select the action item by turning the knob. 2. Press【Enter】to confirm the
selected mode. 3. Press【Esc】to return to the previous interface.
MEAS DI SP
CC
10. 000
1.000
Set ：
1. 000
Of f Ti me：
10000 S
Li mi t ：
15. 000 V
3. 000 A
220. 00 W
V
A
W
10. 00
A
02. CV01. CC
04. CR03. CP
06. CR+CV05. CC+CV
08. LI ST07. TRAN
10. SHORT09. SCAN
12. LED
11. BATTERY
01. CC
Figure 2.4 Mode selection interface
2.4.1 Constant current mode
In constant current mode, the electronic load consumes a constant current regardless of whether the
input voltage changes or not.
Operating instructions: 1 Select the operation option by turning the knob. 2. For parameter settings,
please refer to 1.4 Numeric Parameter Setting for details. 3. Press the corresponding【On/Off】to turn on
the load..

ET5301/5302/5303/5304 Programmable DC Electronic Load User Manual
Hangzhou Zhongchuang Electronics Co., Ltd.
5
MEAS DI SP
CC
0. 000
0. 000
Set ：
3. 000
Of f Ti me：
10000 S
Li mi t ：
15. 000 V
3. 000 A
220. 00 W
V
A
W
0. 00
A
Figure 2.4.1 Constant current mode
2.4.2 Constant voltage mode
In constant voltage mode, the electronic load will consume enough current to keep the input voltage
at the set voltage.
Operating instructions: 1 Select the action item by turning the knob. 2. For parameter settings, please
refer to 1.4 Numeric Parameter Setting for details. 3. Press the corresponding【On/Off】to turn on the
load..
MEAS DI SP
CV
0. 000
0. 000
Set ：
16.000
Of f Ti me：
10000 S
Li mi t ：
15. 000 V
3. 000 A
220. 00 W
V
A
W
0. 00
V
Figure 2.4.2 Constant voltage mode
2.4.3 Constant resistance mode
In constant resistance mode, the load is equivalent to a constant resistance, and the load will consume
a current that varies with the input voltage.
Operating instructions: 1 Select the action item by turning the knob. 2. For parameter settings, please
refer to 1.4 Numeric Parameter Setting for details. 3. Press the corresponding【On/Off】to turn on the
load..
MEAS DI SP
CR
Set ：
500.00
Of f Ti me：
10000 S
Li mi t ：
15. 000 V
3. 000 A
220. 00 W
Ω
0. 000
0. 00
0. 000
0. 00
V
A
W
Ω
Figure 2.4.3 Constant resistance mode

ET5301/5302/5303/5304 Programmable DC Electronic Load User Manual
Hangzhou Zhongchuang Electronics Co., Ltd.
6
2.4.4 Constant power mode
In constant power mode, the load consumes a constant power. When the input voltage changes, the
load will adjust the current accordingly to keep the consumed power at the set power value.
Operating instructions: 1 Select the action item by turning the knob. 2. For parameter settings, please
refer to 1.4 numeric parameter settings. 3. Press the corresponding【On/Off】to turn on the load..
MEAS DI SP
CP
0. 000
0. 000
Set ：
10.00
Of f Ti me：
10000 S
Li mi t ：
15. 000 V
3. 000 A
220. 00 W
V
A
W
0. 00
W
Figure 2.4.4 Constant power mode
2.4.5 Constant current to constant voltage mode
The constant current to constant voltage mode is to prevent the source to be measured from being
damaged by overcurrent discharge. In this mode, when the source to be measured cannot output the
current value set by the load, it will automatically switch from constant current mode to constant voltage
mode.
Operating instructions: 1 Select the action item by turning the knob. 2. For parameter settings, please
refer to 1.4 Numeric Parameter Setting for details. 3. Press the corresponding【On/Off】to turn on the
load.
Figure 2.4.5 Constant current to constant voltage mode
2.4.6 Constant resistance to constant voltage mode
The constant resistance to constant voltage mode is to prevent the source to be measured from being
damaged by overcurrent discharge. In this mode, when the source to be measured cannot output enough
current to maintain the set resistance, the load will switch from constant resistance mode to constant
voltage mode.