East Tester ET5410 User manual

ET5410、ET5411 Single channel DC
electronic load
User's Manual
Hangzhou ZHO G CHUA G Electronics Co., Ltd.
Safety precautions
I

In order to avoid personal injury and prevent product damage, please use this product in
accordance with regulations. Don't go on until you fully understand and meet the following
warnings.
Safe grounding.Please ensure that the grounding terminal of the power
line of this product is reliably connected with the protective
grounding terminal, and insert the instrument into the grounded power
socket.
Use suitable fuse.To provide continuous fire protection, please use
only the specified type and rated fuse.
If the product is abnormal, please do not use it.Its protective
measures may have been damaged, do not install replacement parts or
unauthori ed adjustment of products. Please return the product to
repair or professional inspection to ensure its safety characteristics.
Never use this product in a flammable and explosive environment.
Environmental considerations
This product conforms to the requirements of the WEEE directive 2002/96/EC). The label
attached to the product see below) indicates that the electronic/electrical equipment shall not be
disposed of with household waste.
Some substances contained in this product may be harmful to the environment or human
health. To avoid releasing harmful substances into the environment or endangering human health,
it is recommended to recycle this product by appropriate methods to ensure that most of the
materials can be reused or recycled correctly. For processing or recycling information, please
contact the local authority.
Symbols on products
The following symbols may appear on the product:
II

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The ET54 series is a DC programmable electronic load, providing 1mV/10mV, 1mA/10mA
high resolution and precision, superior performance. Equipped with 12 common modes, complete
testing functions, can be widely used in charger, switching power supply, linear power supply,
battery and other industries production line testing.
Main features：
User friendly design：
The 2.8 inch TFT LCD display is rich in content and supports both
Chinese and English display.
The operation process is simple and convenient, with intuitive
interface display system, easy to get started.
With key lock function to prevent misoperation.
High performance load:
Provide basic measurement models for CC, CV, CR, CP, CC+CV and CR+CV.
Professional battery testing.
Provide professional LED testing.
Dynamic test mode, which can test the dynamic output performance of
power supply.
Scanning test mode can test the continuity of power output in a certain
range.
List mode, which can simulate multiple load status changes.
Short circuit test for simulating load short circuit.
Support external trigger input (select RS232).
Built in bu er alarm.
Power off to maintain data storage function.
Remote operation can be done through USB and RS-232 (optional)
interface.
With PS2 interface, support external keyboard to set data value.
Multiple security protection:
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It has the functions of over-voltage, over-current, over-power and
over-temperature protection. It can flexibly set the parameters of
over-voltage and over-current, and effectively protect the load.
With intelligent fan speed control function, effectively reduce fan
noise at work.
Reverse polarity protection with input polarity.
2


ET54Brief introduction of series products................................................................- 1 -
Catalog - 2 -
One、quick get start..................................................................................................- 3 -
1.1 Front panel LCD display.....................................................................................- 3 -
1.2 Front panel key....................................................................................................- 3 -
1.3 Key description....................................................................................................- 4 -
Two、Functional operation.......................................................................................- 4 -
2.1 Remote / local handover operation......................................................................- 4 -
2.2 System setup operation........................................................................................- 4 -
2.3 Load setup operation...........................................................................................- 5 -
2.4 Basic mode operation..........................................................................................- 5 -
2.4.1 Constant current measurement mode........................................................- 6 -
2.4.2 Constant voltage measurement mode........................................................- 6 -
2.4.3 Constant resistance measurement mode...................................................- 7 -
2.4.4 Constant power measurement mode..........................................................- 7 -
2.4.5 Constant current transfer voltage measurement mode.............................- 8 -
2.4.6 Constant voltage transfer voltage measurement mode.............................- 9 -
2.5 Dynamic test operation........................................................................................- 9 -
2.6 List test operation..............................................................................................- 11 -
2.7 Scan test operation.............................................................................................- 14 -
2.8 Battery test operation.........................................................................................- 15 -
2.9 LED test operation.............................................................................................- 16 -
2.10 Short circuit test operation...............................................................................- 17 -
2.12 Protection function..........................................................................................- 17 -
2.13 Trigger function...............................................................................................- 18 -
2.14 Qualification test operation.............................................................................- 18 -
2.15 Other system settings.......................................................................................- 19 -
2.15.1 Keyboard lock function..........................................................................- 19 -
2.15.2 xternal interface function....................................................................- 19 -
Four、technical specifications................................................................................- 20 -
3

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!"
Regular function keys Shortcut key
Mode Mode selection key Shift+Menu Parameter setting for non basic
mode
On/Off Channel opening key Shift+Utility System general settings
Esc Return key Shift+Local Remote local handover
Trigger Trigger key
Enter Confirmation key
◀ ▶ Cursor around moving
key
Shift Shift Reuse key
4

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In order to ensure the stability and safety of the load and the source to be tested, it is necessar
y to connect the load and the source to be tested according to the red positive and black, then turn
on the power output first, then turn on the load.
$%&'(
When the load works in remote operation mode, the top bar of the interface will have the corr
esponding icon display. At this time, the interface is locked, and the state and operation of the instr
ument can be controlled by the instructions of the host computer, and the local operation mode can
be switched back through the panel[Shift]+[▶] Local).
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Press the[Shift]+[Esc] Utility) key to enter the system menu interface as shown in Figure 2.2.
1, you can rotate the knob to select and enter the corresponding sub-menu. In the system settings i
nterface can complete the language, restore factory settings, boot settings and other operations, the
settings system interface as shown in Figure 2.2.2.
Operation description：1.Select the operation item by rotating the knob. 2.Press [Enter] to
enter the sub menu interface or switch the contents of the operation item. 3.Press the[Esc] key to
return to the next level.
Fig. 2.2.1 system menu interface Figure 2.2.2 system interface diagram
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Through the system menu, you can enter the load setup interface, as shown in Figure 2.3. Un
der this interface, we can complete the relevant settings about the range, limit value and delay turn
off of the load.
Operation description：1.Select the operation item by rotating the knob. 2.Non numeric
parameters switch settings according to[Enter]key. 3.Digital parameters, press the[Enter]key to
enter editing mode, select the appropriate number of digits by the direction key, then rotate the
knob to adjust the value,[Enter]key to confirm the input. 4.Return to the next level by[Esc].
Fig. 2.3 load setup interface diagram
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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), co
nstant current and constant voltage mode CC + CV), constant resistance and constant voltage mo
de CC + CR). The above six mode parameters can be set at the measurement interface. Among th
em, the arbitrary mode main interface can enter the mode selection interface according to the [Mo
de] key, as shown in Figure 2.4.
Operation description：1.Select the operation item by rotating the knob. 2. press [Enter] k
ey to confirm the selected mode. 3. press the [Esc] button to return to the next level interface.
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Fig. 2.4 mode selection interface
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Under constant current mode, the electronic load consumes a constant current no matter
whether the input voltage is changed or not.
Operation description：1.Select the operation item by rotating the knob. 2. set parameters.
Press the [Enter] key to enter editing mode, select the appropriate number of digits by the direction
key, and then adjust the value by a rotary knob, [Enter] or [Esc] key to exit editing. 3. press the cor
responding [On/Off ]startup mode.
Fig. 2.4.1 mode of constant current measurement
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In constant voltage mode, the electronic load will consume enough current to maintain the in
put voltage at the set voltage.
Operation description：1.Select the operation item by rotating the knob. 2. set parameters.
Press the [Enter] key to enter editing mode, select the appropriate number of digits by the direction
key, and then adjust the value by a rotary knob, [Enter] or [Esc] key to exit editing. 3. press the cor
responding [On/Off ]startup mode.
7

Fig. 2.4.2 mode of constant voltage measurement
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In constant resistance mode, the load is equivalent to a constant resistance, and the load consum
es a current that changes with the input voltage.
Operation description：1.Select the operation item by rotating the knob. 2. set parameters.
Press the [Enter] key to enter editing mode, select the appropriate number of digits by the direction
key, then adjust the value by the rotary knob, and the [Enter] and [Esc] keys exit editing. 3. press t
he corresponding [On/Off] startup mode.
Fig. 2.4.3 measurement mode of constant resistance
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In constant power mode, the load consumes a constant power. When the input voltage changes,
the load maintains the power consumption at a set value by adjusting the corresponding current.
Operation description：1.Select the operation item by rotating the knob. 2. set parameters.
Press the [Enter] key to enter editing mode, select the appropriate number of digits by the direction
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key, and then adjust the value by a rotary knob, [Enter] or [Esc] key to exit editing. 3. press the cor
responding [On/Off ]startup mode.
Fig. 2.4.4 mode of constant power measurement
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Constant current transfer voltage measurement mode is designed to prevent damage caused by
overcurrent discharge. In this mode, when the current value set by the load cannot be output by the
source to be measured, the current mode will be automatically switched from the constant current
mode to the constant voltage mode.
Operation description：1.Select the operation item by rotating the knob. 2. set parameters.
Press the [Enter] key to enter editing mode, select the appropriate number of digits by the direction
key, and then adjust the value by a rotary knob, [Enter] or [Esc] key to exit editing. 3. press the cor
responding [On/Off] startup mode.
Fig. 2.4.5 constant current transfer voltage measurement mode
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Constant voltage transfer voltage measurement mode is designed to prevent damage caused b
y overcurrent discharge. In this mode, when the source cannot output enough current to maintain t
9

he set resistance, the load will change from the constant resistance mode to the constant voltage m
ode.
Operation description：1.Select the operation item by rotating the knob. 2. set parameters.
Press the [Enter] key to enter editing mode, select the appropriate number of digits by the direction
key, and then adjust the value by a rotary knob, [Enter] or [Esc] key to exit editing. 3. press the cor
responding [On/Off] startup mode.
Fig. 2.4.5 voltage measurement mode with constant resistance
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Dynamic test operation can be repeatedly switched between two kinds of load setting current
or voltage, this function can be used to test the dynamic characteristics of power supply. Before st
arting the dynamic test operation, it is necessary to set the parameters related to the dynamic test.
The specific parameters include: dynamic load state, A value, A value pulse width time, B value p
ulse width time and dynamic test mode. The setting interface and test interface are shown in Figur
es 2.5.1 and 2.5.2, respectively.
Parameter setting interface operation instructions：1.After entering the main interface of
dynamic testing by the [Mode] key, press [Shift]+ [◀] to enter the parameter setting interface of
dynamic testing. 2. Select the operation by turning the knob; 3. Switch settings by pressing the
[Enter] key for non-numeric parameters; 4. For numeric parameters, press the [Enter] key to enter
editing mode, select the corresponding digits by the direction key, and then rotate the knob to
adjust the value, [Enter] or [Esc] key to exit the editing; 5. Press the [Esc] to return to the next
level. Interface
Test interface operation instructions：1.Press [On/Off] to start or close mode.
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Among them, the dynamic test mode can be divided into continuous mode, pulse mode,
trigger mode three, as follows:
Continuous mode: in this mode, after starting the test, the load can continuously switch
between the A value and the B value.
Pulse mode: In this mode, after starting the test, the load switches from A to B for each
trigger signal it receives, and after maintaining the pulse duration of B, it switches back to A
again.
Trigger mode: In this mode, after starting the test, the load switches between A and B values
for each trigger signal it receives. In this mode, setting pulse width will not work.
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Figure 2.5.1 dynamic setting interface
Fig. 2.5.2 dynamic test interface
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The list test function can conveniently test the working conditions of the source under differe
nt loading conditions, which is conducive to the automatic test of the production line. By pre-settin
g the steps of list testing, the testing steps and parameters of the source to be tested can be edited i
nto a list and a series of tests can be completed in sequence. Specific settings include: setting the n
umber of steps, step mode, cycle switch, each step load mode, load size, delay time, comparison s
witch, upper limit value, lower limit value
Press the [Shift]+ [◀] Menu) key to enter the list menu interface under the list test main
interface, adjust the knob to select the appropriate options, and press the [Enter] key to enter the
corresponding submenu
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Figure 2.6 list menu interface
The setup interface and test interface are shown in Figures 2.6.1 and 2.6.2, respectively, and
the test result interface at the end of the test is shown in Figure 2.6.3.
List test setup interface operation instructions：1.Select the operation item by turning the
knob; 2. Edit the parameters by switching to edit state through the direction key; press the [Enter]
key after selecting the previous page or the next page to turn over the page. Press the [Enter] key
when the direction key is selected and saved to enter the list test parameter saving interface; 3. No
n-digital parameters in editing state can be saved by pressing the [Enter] key. Press the [Enter] key
to switch settings; 4. Press the [Enter] key to enter the editing mode, select the corresponding digit
s by the direction key, then rotate the knob to adjust the value, [Enter] or [Esc] key to exit the editi
ng; 5. Press [Esc] to return to the upper interface;
Test interface operation instructions：Press [On/Off] to start or close mode.
Figure 2.6.1 list setup interface
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Figure 2.6.2 list test interface
Figure 2.6.3 list result interface
List test results save interface operation instructions.：1.Select files by rotating the knob;
2. Edit files by switching the direction key to the editing state; 2. Select the previous page or the n
ext page by pressing the [Enter] key to turn the page; 3. In editing state, select the operation of stor
ing, reading, deleting files by rotating the knob, press the [Enter] key to enter the file name. Interfa
ce, calling files, deleting files; 4. returning to the next level by [Esc].
Figure 2.6.4 file list to set parameter save interface
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Figure 2.6.5 file list results save interface
File naming interface operation instructions：1.The file can be edited by switching the
direction key to the editing state, and then the file can be saved by pressing the [Enter] key, and an
error will be reported if it is empty. 2. The character is selected by a rotary knob and the character
is typed by pressing the [Enter] key. 3. Press [Esc] to return to the upper interface.
Figure 2.6.7 named naming interface
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Scanning test can be used to detect the continuous operation of the source to be measured in a
certain range, and can easily capture the critical parameters of the source to be measured, such as p
rotection current, turning voltage and so on. Users can set parameters such as starting point, end p
oint, step quantity, step delay, threshold type, comparison type and so on. The end of the scan test
shows that the test results are qualified or not.
Parameter setting interface operation instructions：1.Press the [Shift]+ [◀
] Menu) key to enter the scanning settings interface under the scanning test main interface; 2.
Select the operation item by rotating the knob; 3. Switch the settings options by pressing the
[Enter] key for non-numeric parameters; 4. For numeric parameters, press the [Enter] key to enter
the editing mode, select the corresponding digits through the direction key, and then rotate the
spin. Button adjustment value, [Enter] or [Esc] key out of editing; 5. return to the next level by
[Esc].
Test interface operation instructions：1.Press [On/Off] to start or close mode.
15

Figure 2.7.1 scan test setup interface
Fig. 2.7.2 scan test interface
,
Battery test function is often used to test battery discharge performance, the electronic load ca
n work in a constant current or resistance mode, can be convenient to determine the discharge capa
city of the battery.
Parameter setting interface operation instructions：1.Press the [Shift]+ [ ◀
] Menu) key to enter the battery settings interface under the battery test main interface; 2.
Select the operation items by the rotary knob; 3. Switch the settings options by pressing the
[Enter] key for non-digital parameters; 4. For digital parameters, press the [Enter] key to enter the
editing mode, select the appropriate number of digits through the direction key, and then rotate the
spin. Button adjustment value, [Enter], [Esc] key quit editing; 5. press [Esc] to return to the next
level interface.
Test interface operation instructions：1.Press [On/Off] to start or close mode.
16

Fig. 2.8.1 battery test setup interface
Fig. 2.8.2.1 battery test CC interface
Fig. 2.8.2.2 battery test CR interface
-
CR-LED test can simulate the characteristics of the real LED lamp. By adding the diode on-
voltage setting in the traditional CR mode, when the load input voltage exceeds the diode on-
voltage, the load begins to work, which can truly reflect the load capacity of the LED driving
power supply.
Operation description：1.Select the operation item by rotating the knob. 2. set parameters.
Press the [Enter] key to enter editing mode, select the appropriate number of digits by the direction
17

key, and then adjust the value by a rotary knob, [Enter] or [Esc] key to exit editing. 3. press [On/O
ff] to start or close mode.
选项说明：
Option description Option content Option description
LED Vo：0---Vmax LED Stable working voltage of constant current source
carrying LED lamp
LED Io：0---Imax LED Constant current source output current
LED Coeff：0.01—1 The ratio of the voltage on the Rd to the total voltage in
the loop.
The above parameters can be used as follows: 1) 2) The conduction voltage and the
impedance of the LED can be obtained by two formulas. Vf is defined as the diode conduction
voltage and Rd as the Led impedance.
Rd = Vo / Io) * Coeff 1)
Vf = Vo * 1 - Coeff) 2)
Fig. 2.9 LED test interface
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The load can simulate a short-circuit circuit at the input end. Under short-circuit test, the
actual value of the load short circuit depends on the maximum output of the power supply.
Operation description：1.Select the operation item by rotating the knob. 2. set parameters.
Press the [Enter] key to enter editing mode, select the appropriate number of digits by the direction
key, and then adjust the value by a rotary knob, [Enter] or [Esc] key to exit editing. 3. press [On/O
ff] to start or close mode.
18