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OPERATION
MANUAL
CH9720 Series
Programmable DC Electronic Load
CHANGZHOU BEICH Electronic Technology Co., Ltd
Страница 1: ...1 OPERATION MANUAL CH9720 Series Programmable DC Electronic Load CHANGZHOU BEICH Electronic Technology Co Ltd...
Страница 2: ...nge without notice The latest manual electronic documents can be downloaded from the official website of BEICH Electronics http www BEICH com cn August 2017 First edition November 2017 Second edition...
Страница 3: ...ns may damage the instrument Please use the same specifications when replacing the fuse Keep away from explosive gas environment Electronic instruments should not be used in flammable or explosive atm...
Страница 4: ...Introduction 6 2 2 Technical parameters 7 2 3 Front panel introduction 9 2 4 Rear Panel Introduction 10 2 5 Display area introduction 11 CHAPTER III MENU OPERATION 12 3 1 Load page 12 3 1 1 Normal pag...
Страница 5: ...all 23 Save the file to the U disk 23 File List 24 3 2 5 Battery Test Page 25 3 2 6 Dynamic Test Page 25 3 2 7 List Test Page 26 3 2 8 LED Test Page 27 3 2 9 System Information Page 27 3 2 10 Data Cor...
Страница 6: ...attached to the electronic load in the box for damage or defects 3 Check that all of the packing items included with the electronic load are the specified accessories or options Standard configuratio...
Страница 7: ...imilar box in a ventilated room with a temperature of 5 40 and a relative humidity of not more than 85 RH The air should not contain harmful impurities of the corrosion measuring instrument And avoid...
Страница 8: ...flexible soft and hard frame can meet the demand of group test so that to improve the test efficiency The smart fan control and excellent dispersion performance with the protection alarm steps like o...
Страница 9: ...resistance mode 0 05 5 0 2 0 2 FS 0 001 0 5 50 0 1 0 1 FS 0 01 5 500 0 1 0 1 FS 0 1 500 5K 1 1 FS 1 Rated power mode 0 50W 0 1 0 1 FS 1mW 0 150W 0 1 0 1 FS 10mW 0 300W 0 1 0 1 FS 0 1 W Voltage measur...
Страница 10: ...s recording Only available for CH9720BU 9720CU 4 LCD Display Screen Display test result condition and system information 5 Input key Full functional numerical keyboard used to input data or character...
Страница 11: ...rol of the instrumentless panel 2 5 Display area introduction The LCD display is divided into relatively fixed areas to display specific information for each page Order Name Description 1 Setting para...
Страница 12: ...efinition key This field is a flexible definition menu determined by the options of more menus More Press this button will pop up the optional function page the menu content has fixed resistance fixed...
Страница 13: ...ollow the changed value Constant voltage mode of operation CV In constant voltage mode the electronic load will consume enough current to keep the input voltage constant at the set point V set voltage...
Страница 14: ...constant current method to change the resistance setting value CC CV mode The CC CV mode is a constant current plus voltage mode The main function is to prevent damage caused by overcurrent discharge...
Страница 15: ...uracy of the electronic load When the load consumes a large current a voltage drop will be generated on the connection line of the tested power supply to the load To ensure measurement accuracy the lo...
Страница 16: ...to below this maximum current 2 In the case of CV CP CR and short circuit test when the load current exceeds the maximum current the instrument will alarm and display over current protection OC If it...
Страница 17: ...ut voltage is higher than the set voltage the list test starts and the test sequence is stopped after the completion of the test Shutdown voltage The minimum shutdown voltage can be applied to four ba...
Страница 18: ...page or Press the Back key to return to the main menu 3 2 3 System Settings Page In this interface you can set and change the instrument system style and application Press ENT to switch the menu cont...
Страница 19: ...directly and press the ENT key to confirm and move the cursor to the next item 3 2 4 File List Page Storage and call Through the store and recall functions parameters can be saved instantly measureme...
Страница 20: ...more for U disk storage the memory type will be displayed on the right side of the operation bar then enter the file code and press the save button to confirm the save U disk file structure After con...
Страница 21: ...out the U disk Otherwise the U disk or U disk file system may be damaged Note The data record files are numbered in the order of BEICH000 BEICH199 The user cannot specify and modify the stored file na...
Страница 22: ...ge serial number Use Internal RAM battery powered 0 File not visible instant save automatic call Internal FLASH 1 100 Store and call through file list External USB memory 101 550 Store and call throug...
Страница 23: ...ed settings file There is a confirmation action when deleting Exit Exit the file list and return to the page before the file list 3 2 5 Battery Test Page The discharge test can be operated in constant...
Страница 24: ...o enter the entire discharge curve 3 2 6 Dynamic Test Page Dynamic testing allows the load to be switched between two voltages or currents This feature can be used to test the dynamics of the power su...
Страница 25: ...can more fully understand the working characteristics of the tested products in various applications The instrument can set up up to 15 different types or sizes of loads single step automatic test ti...
Страница 26: ...ss the numeric keys to input the voltage value The system will automatically start the measurement when it is judged that there is higher than this voltage input generally set to 80 of the no load inp...
Страница 27: ...ing principle of the diode is completely simulated so that the test voltage and current reach a normal stable value and the voltage in the conventional constant resistance mode is avoided The current...
Страница 28: ...ess you can contact BEICH Electronics Co Ltd at any time Upgrade the firmware as follows Step 1 Download the upgrade file provided by the company The file name generally includes the instrument model...
Страница 29: ...ess the Upgrade function soft key Step 6 After confirming the upgrade operation the instrument verifies the upgrade file If the verification is correct the upgrade file is installed into the FLASH ROM...
Страница 30: ...A2 External trigger In the dynamic and list test it may be necessary to start the next load conversion by trigger The trigger has three types manual external and bus which are triggered externally on...
Страница 31: ...statistical analysis The instrument provides a wealth of program control commands through the RS232C interface the computer can perform almost all functions on the instrument panel RS232C Bus Althoug...
Страница 32: ...al Serial Bus remote control system controls the instrument through the USB interface This connection conforms to USBTMC USB488 and USB2 0 protocols USB CDC Communication the tester is considered as C...
Страница 33: ...tallation is succeed you can use RS232 to visit and control the tester no need to install every time but the computer may dynamically allocate serial passwords please go to the Device Manager to see U...
Страница 34: ...r DATA B test result of secondary parameter displayed in the format of index and composed by 12 ASCII codes SN NNNNNESNN S N 0 to 9 E index STATUS means test status the normal return is 0 other is err...
