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CH9720 Operation Manual

Chapter 3 Menu Operation

24

Load type

Press

【

Ent

】

to select

CC
CV
CR
CP

Load level

Press

【

Ent

】

to confirm

Delay

Input number and press

【

Ent

】

to confirm

，

unit is 0.1s

Comp Type

Off

：

not compare test data

In Volt

：

compare test data in voltage

In Curr

：

compare test data in current

In Pow

：

compare test data in power

Minimum

Input number to press

【Ent】to confirm

Maximum

Input number to press

【Ent】to confirm

Note

：

move cursor to enter test page after all data is finished

Note

：

enter test page to start test, the page displays the test and compare result of current test step.

Note

：

on test result page, the test data and compare result of each step is displayed

Summary of Contents for 9720BU

Page 1: ...OPERATION MANUAL CH9720 Series Programmable DC Electronic Load BEICH ELECTRONIC TECHNOLOGY CO LTD...

Page 2: ...e The latest version can be downloaded from our website http www beich com cn June 2017 1st Edition September 2017 2st Edition The descriptions contained in this manual may not cover all information a...

Page 3: ...HAPTER 2 DESCRIPTION 5 2 1 Product introduction 5 2 2 Technical parameter 6 2 3 Front panel 7 2 4 Rear panel 8 2 5 Display 8 CHAPTER 3 MENU OPERATION 10 3 1 Normal page 10 3 1 1Test operation in norma...

Page 4: ...ile List 18 Save and load 18 Save file to U disk 19 File list 20 3 2 5Battery Test Set 21 3 2 6 Tran test Dynamic Test 22 3 2 7 List Test 23 3 2 8LED Test 25 3 2 9 System Info 25 3 2 10 Calibration 26...

Page 5: ...Manual 1 Test report 1 1 2Power supply Inspect the following items Requirement Voltage 220 110 1 10 V AC Frequency 47 63Hz Max Power consumption 30VA 1 3 Fuse Specification 250V 1A Slow Blow 5 20mm Th...

Page 6: ...ially designed for decreasing noise jamming caused by the AC power input but it is also recommended to use it in the environment of low noise If noise cannot be avoided install a power filter please 5...

Page 7: ...comparator function with HANDLER interface can ensure the batch test and systemization test The load function is rich CC CV CP CR CR LED Simulate the characteristic of driver battery discharge functio...

Page 8: ...FS 0 1 500 5K 1 1 FS 1 CP mode when input voltage and current 10 FS 0 50W 0 1 0 1 FS 1 mW 0 150W 0 1 0 1 FS 10 mW 0 300W 0 1 0 1 FS 0 1 W Voltage test accuracy 0 9 9999V 0 05 0 03 FS 0 1mV 10 000 99...

Page 9: ...when data is recording Only available for CH9720BU 9720CU 4 LCD display Display test result condition and system information 5 Input Full functional numerical keyboard used to input data or character...

Page 10: ...witcher Switch 110V and 220V 4 AC input 1A fuse is inside of 5 Remote test and trigger input interface The configuration of pin is referred to appendix A 6 RS232C interface Communicate with external d...

Page 11: ...rnal temperature in device Display the monitored internal temperature 4 Limit alarm setting value Set the high and low limit in normal test model alarm when over the limit more details in 3 2 2 5 Syst...

Page 12: ...urrent Constant voltage CV Fixed The DC Load consumes enough current to fix the input voltage in the set value Flexible definition key The item is flexible which is decided by more options in menu Mor...

Page 13: ...lue and the number is displayed in status bar and press Ent to confirm Press Start or ON to start the load test E g Set current value to 1 2345A In CC mode input 1 2345 and press Ent to confirm In the...

Page 14: ...changed the load adjusts current to maintain the power V V1 Input voltage V2 Set power P V3 I1 I2 I3 I Load current In other load mode press More to enter menu to select power mode and use Start to s...

Page 15: ...set the parameter of CV 2 Press start to test if DC Load judges the current can be loaded to the set value then the DC Load is in CC mode if the source current can t be output to set value then turn...

Page 16: ...ote test terminal on the rear panel Voltage remote test Off turn off remote test the voltage is sampled from input terminal on the front panel Note the pin configuration of Sense interface is referred...

Page 17: ...d to 18V or 50V 60A system Note press ENT t o switch range Max Voltage There are 2 functions of setting the Max Input voltage 1 The set CV value Vs is limited below the Max Current 2 The DC Load alarm...

Page 18: ...te If the set value is 0 or closed to 0 the Min startup voltage is Off which means the function is off Rise rate Used to set the rise speed which to decrease the over current shock under some conditio...

Page 19: ...ed by Sense on the rear panel BUS Triggered by command via RS232C interface Language ENGLISH Comm mode RS232C USB CDC USB TMC Poweron set Default Last Local Addr Input number and press Ent to confirm...

Page 20: ...he setting parameter and system parameter Save the setting to internal ROM storage or external USB storage by means of file Save the screenshot to USB storage Save test result to USB storage Data reco...

Page 21: ...n t identify the U disk please use another one Note Beich is not responsible for the data loss caused by the USB device Save file to U disk After USB device is connected with USB HOST then use SAVE to...

Page 22: ...s numbered in the sequence of BEICH 000 BEICH 199 user can t appoint and revise the file name File list Test Setup file Test setup about the parameter for testing the parameter includes current page o...

Page 23: ...confirm directly in the default Unnamed to name Note File name here is actually the note of the test setup file DELETE Available when file existing delete the appointed setup file Confirm when deletin...

Page 24: ...d can switch 2 kinds of voltage or current which can test the dynamic feature of power supply Tran test procedure Step 1 Select tran load press ENT to select CC or CV Step 2 Select tran mode input num...

Page 25: ...e the test result PASS FAIL all test steps is passed then it is PASS any step is failed then it is FAIL In list test mode set the Min start voltage then it can test automatically in the whole procedur...

Page 26: ...e test data in voltage In Curr compare test data in current In Pow compare test data in power Minimum Input number to press Ent to confirm Maximum Input number to press Ent to confirm Note move cursor...

Page 27: ...y or shake caused by voltage and current in traditional CR mode then reflect the actually situation of LED driver with load Parameter Description LED Vo Output voltage reference value of LED power sup...

Page 28: ...rt the U disk to USB HOST interface Step 4 When U disk is installed select UPDATE on update page the firmware file is listed Max 10 files the file name is displayed by model and update time Note Only...

Page 29: ...mpling cables are via the Sense interface on the rear panel Turn on the remote test in setting A2External trigger There are 3 trigger modes of manual external and bus and the external trigger is on Se...

Page 30: ...4 and 9 is used for external start no any external power supply Pin 1 and 3 is used to output pass signal no any external power supply Pin 2 and 3 is used to output fail signal no any external power...

Page 31: ...t it is still applied in industry and PLC control The standard RS232 interface adopts 25 core connector Discontinued and 9 core connector As most serial interfaces the serial interface of CH9720 is al...

Page 32: ...ion conforms to USBTMC USB488 and USB2 0 protocols USB CDC Communication the tester is considered as COM Vcom which can realize the same communication way as RS232C USB TMC Test measurement the protoc...

Page 33: ...install every time USB TMC If you want to use USB TMC please download and install NI VISA from http www ni com china which the USB TMC driver is included when connecting to PC by USB cable the PC iden...

Page 34: ...STATUS BIN No format is as below DATA A and DATA B output test result DATAA is test result of primary parameter DATA B test result of secondary parameter displayed in the format of index and composed...

Page 35: ...CH9715 Operation Manual Appendix A Remote control 33...

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