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USER'S GUIDE - StanTronic Instruments

1. 2 Range 0 1W to measure the resistance 2 Press the keys and 0 1W or IW or 10W to set different measurement range of Milliohmmeter Picture 4 5 Milliohmmeter Measuring Electrical Resistance 22 Nanjing Maynuo Electronics Co Ltd 4 10 Voltmeter Function The voltage of the instrument under test can be measured if the wires are connected together just as the picture 4 6 O A Q SZ Picture 4 6 Measuring the Voltage of the Instrument under Test 23 M88 XX Series Programmable DC Power Suppliers Chapter 5 Remote Operation Mode The DB9 interface connector on the rear panel of the power supplier can be transferred to RS232 interface through the voltage level shift cable M 131 the following information will tell you how to use the computer to control the output of the power supplier Before carrying out the remote operation mode please use the voltage level shift cable M 131 provided by our company for M 131 can not only transform TTL voltage level into RS232 signal but also connect the DB9 interface connector with computer s serial interface 5 1 M 131Communication Cable The DB9 interface connector on the rear panel of power supplier is TTL voltage level you can use the communication cable M 131 to connect the DB9 interface connector of the power supplier and the RS 232 interface connector of computer for the communication Please refer to the following picture for M 131 Picture 5 1
2. Single step mode once repeat Edit File Format 8X25 Steps Setting list file as 8X25step 4X50 Steps Setting list file as 4X50step Exit 2X100 Steps Setting list file as 2X100 step 1 X200 Steps Setting list file as 1X200 step When accessing to the List Set item the following menu items will be displayed on the VFD display screen by pressing the keys A and V Load Atest File Edit Atest File Exit Timer State Off Default Closing output timer Timer Set Inputting the time Note When accessing to the menu item you can press es to exit the menu operation No matter which function the instrument is performing you can exit the function operation status by pressing the keyso 4 6 2 Menu Function Initiating the Output State gt Output Setup M88XX Series Programmable DC Power Suppliers This instruction can initiate the output state when the power supplier 1s powered on If you select the item On the power supplier will initiate the output to OFF state when the power supplier is powered on If you select the item Off the output will remain the same state as last time you turned off the power supplier Setting the Key Sound Key Sound Set This instruction can switch on off the buzzing sound when you press any key If you select the item On the buzzer will sound when any key was pressed If you select Off the buzzer will not sound when the keys were pressed Default setting 1s the item On the buzzer will sound when
3. then the command sent is VOLT MAX lt LF gt If the return command of a power supplier is 76 0000 then the maximum voltage value set of the power supplier is 76 0000V 3 If you want to query the minimum voltage value set then the command sent is VOLT MIN lt LF gt If the return command of a power supplier is 0 0000 then the minimum voltage value set of the power supplier is 0 0000V Command CURRent Value 1l This command is used to set the current value of the power supplier Parameters numerical value MA X MIN Unit A Return command none For example 30 Nanjing Maynuo Electronics Co Ltd 1 Command sent CURR 3 lt LF gt means the current current value of the power supplier 1s 3A 2 Command sent CURR MAX lt LF gt If the current maximum current value of the power supplier is 2 0000A then the current current value is the maximum current value 2 0000A 3 Command sent CURR MIN lt LF gt If the current minimum current value is 0 000V then the current current value is the minimum current value 0 000V 2 Related Command the command used to query the current value set the maximum value set or the minimum value set CURR MAXIMIN Return command parameters numerical value For example 1 If you want to query the current value set then the command sent is URR LF If the return command of a power supplier is 1 0000 then the current value set of the power supplier is 1 0000A 2 If you want to q
4. NAME RNC setting Value Resolution Readback Value Resolution ERA RUNE Readback Value Accuracy Periodic And Random Deviation 0 12V Accuracy 0 02 2mV 0 50V Accuracy 0 0299 5mV Voltmeter Accuracy 10W 0 1000mQ Accuracy 0 29693 mQ 1000 10000 mQ Accuracy 0 2 6 mQ 2 2 Supplemental Characteristics Milliohmmeter Accuracy State Storage Memory 50 user configurable stored states Recommended Calibration Interval Once Year AC Input Ratings selectable via switch on the rear panel Option 01 220VAC 10 47 to 63 Hz Option 02 110 VAC 10 47 to 63 Hz Cooling forced cooling Operating Temperature 0 to 40 C Nanjing Maynuo Electronics Co Ltd Storage Temperature 20 to 70 C Environmental Conditions Designed for indoor use with pollution degree 2 environment Designed to operate at maximum relative humidity of 95 2 3 M88XX Power Suppliers Dimension The dimension of M881X Series is 256mmW x 108mm H x 365mm L Please refer to the following figure 214 365 ao a Figure 2 1 M881X Power Suppliers Dimension Figure The dimension of M885X Series is 428mmWx103 5mmHx453 5mmL Please refer to the following figure Figure 2 2 M885X Power Suppliers Dimension Figure 5 M88 XX Series Programmable DC Power Suppliers Chapter 3 Quick Start This chapter mainly focuses on the brief introduction of the surface appearance and basic functions of M88XX Series power suppliers so that both experienc
5. and load terminals In order to guarantee the measurement accuracy remote measurement terminals is installed at the rear panel of the power supplier Users can measure the output terminals voltage of the instrument under test by these terminals 21 M88XX Series Programmable DC Power Suppliers Before performing the remote measurement function you need to set the power supplier as the remote measurement mode Please refer to the picture 4 4 for the trigger terminals and measurement terminals S S TRO TRI GND Piccture4 4 Remote Measurement Terminals S and S are remote measurement terminals TRQ and TRI are trigger terminals the last two terminals are ground terminals The output of power supplier will be turned off when testing out the change in voltage level from high to low from TRQ port which is under the latched mode of the remote control function As a multifunction extended port TRI port is designed for future expanded 4 9 Milliohmmeter Function Source Meter provides the four line electrical resistance measurement just as showed in following picture 4 5 which can measure accurately the low resistance and the maximum measurement resistance is 10Q In order to avoid the damage of the resistance under test please make sure the resistance under test is within the measurement rang Three measurement ranges can be optional 0 1 W 1W 10W Operation Method 1 Press the keys and V m 2 VED display screen shows m
6. delivery Maintenance Service This product must be returned to maintenance department designated by our company for repairing Customer shall prepay shipping charges and shall pay all duty and taxes for products returned to the supplier for warranty service Except for products returned to customer from another country supplier shall pay for return of products to customer Limitation of Warranty The foregoing warranty shall not apply to 1 Defects resulting from improper or inadequate maintenance by the Customer 2 Customer supplied software or interfacing 3 Unauthorized modification or misuse 4 Operation outside of the environmental specifications for the product or improper site preparation and maintenance 5 Defects resulting from the circuit installed by clients themselves Attention No inform will be given for any changes in the content of the user s guide 35
7. power supply including manufacture product model number serial number and version number Return command return parameter contains four fields separated by commas Example Send command IDN lt LF gt the corresponding expressed as a hexadecimal is 0x2A 0x49 0x44 Ox4E Ox3F 0x0A meanwhile return command for power supply is MAYNUO M8812 881201096006118000 V1 0 And MAYNUO manufacture M8812 product model number 881201096006118000 product serial number V1 0 software version number 6 2 2 Command specified by M8800 software This command is ordered arrangements of tree constructs Each command contains a number of strings mnemonic Layers separated by a colon At the top of the command in the command tree known as the root shell or simply root Access to the next command you must specify a 26 Nanjing Maynuo Electronics Co Ltd path Ordered tree 1s structured as follows AA BB CC DD EE FF GG HH JJ In the above table AA represents the root path BB CC DD represents the root path of the direct sub path EE FF GG said that the path 1s a sub sub path under the BB HH JJ said that the path 1s a sub sub path under DD Command description 1 AA CC means the current root path for the AA visit the AA under the CC 2 AA BB FF means the current root path for the AA visit the AA path to the root path of the sub BB under the FF 3 AA DD HH means the current root path for the AA visit the A
8. the list operation include the name of the list file which are input input single step numbers 200steps at most single step duration time 1mS at least and the setting value of every single step When list operation is under continuous mode the power supplier will begin the list operation until the list operation is finished or until receiving the next trigger signal Before editing the list if you want to change the file storage format please operate as the following steps 1 Press the keys Shift and Menu to access to the menu function 2 When VFD display screen shows the item Config press the key Wto select the item List Set press the key Enter to confirm 3 When VFD display screen shows the item Load ListFile Press the key Wtwice select the item 18 Nanjing Maynuo Electronics Co Ltd Edit File Format press the key Enter to confirm 4 When VFD display screen shows 8 25 Steps Press the key V twice select a list mode you want from 1 200 Steps 2 100 Steps 4 50 Steps 2 100 Steps means to set a twol00 steps of list file 1 200 Steps means to set a one 200steps of list lie 8 25 Steps means to set an eight 25 steps of list file 4 50 Steps means to set a four 50 steps of list file 5 Press V to select the item Edit List File press the key Enter to confirm 6 When VFD display screen show the item Edit List File 1 press the key A and V to select sequential number you want to edit press the key Enter to c
9. used to set the trigger mode of the power supplier Parameter there are three trigger modes IMMediate means the trigger mode is keyboard trigger mode EXTernal means the trigger mode is external signal TTL voltage level mode BUS means the trigger mode 1s communication command trigger mode Return command none For example command sent TRIG SOUR IMM lt LF gt means the power supplier is set as triggering by the keyboard located in the front panel 34 Nanjing Maynuo Electronics Co Ltd Quick Reference Safety Please donot install any spare or repair the instrument without permission In order to make sure the normal work of the instrument please have it mended in the maintenance department designated by our company Pease review the following safety precautions before operating our equipment Safety Symbols Please keep in mind the following items which may result in injuries on your body Connect it to safety earth ground using the wire recommended in the user manual High voltage danger Non professionals are forbidden to open the instrument N The symbol on an instrument indicates that the user should refer to the operating Instructions located in the manual Certification and Warranty M881X Series power suppliers meet its published specifications at time of shipment from the factory Warranty This instrument product 1s warranted against defects in material and workmanship for a period of one year from date of
10. you press any key Fast Recalling Function gt Fast Recall This instruction can help you recall the saved data very fast when it 1s set as On condition The detailed operations are as follows first you need to save several often used voltage value and current value then use the Recall key to recall those data Press the keys and to access to the menu function When VFD display screen shows the item Config press the key to confirm Press the keysA and Fto select the item Fast Recall and then confirm by pressing the key R Press the keys A and V to select the item On Press the N MN to exit the menu operation Press the keys and to set your favored voltage value and current value After you setting an output state CV value CC value and Maximum voltage press the key Save Use the numeric keys 0 to 9 or A and V keys to select the memory location the range is 1 to 50 which you want to store in Press key to confirm the memory location Press key Use numeric keys 0 to 9 or A and V keys to select the states which you want to recall Press key to confirm Then the saved settings will come out Overcurrent Protection 2OCP Set Nanjing Maynuo Electronics Co Ltd M8811 M8812 M8813 M8851 M8852 M8853 are not available of this function for while Setting the Baudrate gt Baudrate Set This instruction can change the communication baud rate of the power supplier the baud rate range is 4800b
11. A path to the root path of the sub DD under the HH Command specified by M8800 software also can send more than one order in a message and use a semicolon between each order Example AA BB EE FF GG lt LF gt means access to BB under the EE FF GG AA BB FF AA DD HH lt LF gt means access to BB under the FF and DD under the HH SCPI language mnemonic or keywords has a long format and short format Short format is actually short for long format It uses the following rules Short format mnemonic is the first four characters of long format mnemonic If the length of the long form mnemonic characters less than or equal 4 then the length of the mnemonic the same If the length is greater than the length of 4 mnemonic and the fourth character 1s a vowel short mnemonic will discard the fourth vowel characters and become the third characters Example short type mnemonic of ERRor is ERR rather than rather than the ERRO Some command needs parameters Setting command for example There is a space ASCII code is 32 between the command and the first parameter Example setting voltage value VOLT 12 000 lt LF gt There is a space ASCII code is 32 between 12 00 and VOLT System command Commands described in this section are SYSTem commands under the root path The following Commands are used short type mnemonic format 27 M88XX Series Programmable DC Power Suppliers Command SYSTem ERRor Command SYSTem ERRo
12. Continuous Mode and Step Mode Trigger Trigger Picture 4 2 Repeat Trigger with 2 Times Cyclical Pattern When the list operation is under the single step mode the power supplier will not be changed to next step until receiving a trigger signal Please refer to the following picture T ggeQ2 Trigges4 Picture 4 3 Single Step Trigger Automatic Test gt Atest Set You can check if the equipment is qualified by editing the automatic test files such as the value set comparison parameters delay time inputting the step No 50 steps at most 4 data of automatic test files can be edited How to edit automatic test files 17 When the VFD display shows Menu Config press the key Wto select the item Atest Set followed by pressing the key to confirm 18 When the VFD display shows the item Load item Edit List File followed by pressing the key 19 When the VFD display shows the item Edit Atest File 1 press the Enter and V and select the sequential number that need to be edited followed by pressing the key to confirm 20 When the VFD display shows Enor A xxx press the numeric keys to set the steps of list files followed by pressing the key to confirm 21 When the VFD display shows Step 1 Test Curr press the keys A and V to select one of the following testing types ile press the key W twice and choose the to confirm a Curr means to test the current b Volt means to test the output voltage c DV
13. M 131 Note It will not work if you connect the DB9 interface connector of the power supplier to the RS232 interface connector of computer directly by a standard RS232 cable Please use IT E131 to connect them 5 2 Communication between Power Supplier and PC The DB9 interface connector on the rear panel of the power supplier can be transferred to RS232 interface through the voltage level shift cable M 131 The following instructions can help you understand how to control the output of power supplier by PC 1 Communication Setting Before using the remote operation mode please make sure that the baudrate and 24 Nanjing Maynuo Electronics Co Ltd communication address in power supplier are the same as that in the computer software otherwise the communication will fail You can change the baud rate and communication address from the front panel or from computer 1 Baud rate 9600 4800 9600 19200 38400 which are selectable from the menu on the front panel 2 Data bit 8 3 Stop bit 1 4 Parity none even odd 2 DB9 Serial Interface DB9 Serial Interface The output of DB9 interface on the rear panel of the power supplier is TTL voltage level so the voltage level shift cable M 131 must be applied before connecting the DB9 interface with the serial interface on PC Power Supplier M 131 Voltage Level Shift Cable PC Note It will not work if you connect the DB9 interface connector of the power supplie
14. M means to test voltmeter input 22 When the VFD display shows Y I Time xxxxx S press the numeric keys to set the test delay time followed by pressing the ke to confirm Please note that the delay time range 1s 0 2S 25 5S If delay time is set as 25 58 the power supplier will be automatically in the pause mode and go on testing only when another trigger is input 20 Nanjing Maynuo Electronics Co Ltd 23 When the VFD display Enter fi I Volt xxxxx V press the numeric keys to set the voltage followed by pressing the key to confirm 24 When the VFD display peu I Curr xxxxx A press the numeric keys to set the current followed by pressing the key to confirm 25 When the VFD display shows Step 1 Max xxxxx X li Enor numeric keys to set the maximum value for the qualified test followed by pressing the key 26 When the VFD display shows Step 1 Min xxxxx X iiia minimum value for the qualified test followed by pressing the key 27 Repeat from step 21 to step 26 to set all the other steps to confirm numeric keys to set the to confirm 28 Repeat from step 18 to step 27 to edit other automatic test files according to your need 29 Press the key W to select the item Load Atest File followed by pressing the key Enter to confirm 30 Then the electronic load enter into the automatic test mode showing AUTOI at the right upper corner of the VFD display and OFF at the right lower corner of the VFD disp
15. USER S GUIDE Programmable DC power supplier Models M88XX Series Including M8811 M8812 M8813 M885 1 M8852 M8853 Nanjing Maynuo Electronics Co Ltd Content Chapter EIN CEOGUCU OM sistcscscecvesess ccescovesstcccscctcsccssssestes sevescowedssacceccscsosssssesues sesuscovecssccsesesssoocscacacweccneas 2 ChapterZ Technical Speciications 4 eeeeools eae eere ete eio eu euet o erue oae E e Ere eso eus uaa eeu Ee SERRE NEUSS 3 2 I Main Technical SpeetticalloTis ceat eot cet oe o D EHE EN AMEN E EID ad etfusbde 3 22 Supplemental C harade rents CS qud teeta dette dec a tado pa aede tet era Fact Ropbedeohansedeatonbedeotonsedeaontedente 4 2 5 MBSAEN POWER Supplier DIMENSION 2nd de e ted eap cepe ien dieto Ub eels 3 Chapter S QUICK SCALE ects e eese ier pee deis eee E Ini E 6 Sd TFrontpane land Rear palle ubsssstendqeithuafetne a rede dict tatio ees Condita eoa Dos obe EA E a e es uie 6 23 2 Preliminary TAS CO rr ng at a let t ien E m ntn ieu m ed Sate dei ice e sees LU EE lE fi 35 3 Ir the Power supplier Does Not Torn Oii tee oen vibes ere toco esee que tace eset queues esee ou deb emen e ee 7 2 4 How to Adi ust tne Carmine Ende suo iis tet see cea cates ete E Eee ERE cete etie e Pana d e ponite odiosa 8 3 9 How to Rackmount the Instrument 22 ume eter epi cata eris tad dantund ian Hi Pant CRI dou Ded dud Meenas 8 Chapter 4 Panel Operation secisssasteasedscsecctiassansecuisvesutustuacesssugecdiassasseaUiavssutusudsedesueectsnssatseetscvuenssauest
16. de or sequential list mode or milliohmmeter mode Parameter mode has three following modes FIXed command set mode LIST sequential list mode DRM milliohmmeter mode Return command None 20 M88XX Series Programmable DC Power Suppliers Send command MODE LIST lt LF gt the power mode is sequential list mode 2 Related command Query power working mode MODE Return command parameter lt mode gt Command VOLTage Value 1 This command is used to set the voltage value of power suppliers Parameters numerical value MA X MIN Unit V Return Command None For Example 1 Command sent VOLT 30 lt LF gt means the current voltage value of the power supplier 1s 30V 2 Command sent VOLT MAX If the current maximum voltage value of the power supplier is 76 000V then the current voltage value 1s the maximum voltage value 76 000V 3 Command sent VOLT MIN If the current minimum voltage value is 0 000V then the current voltage value is the minimum voltage value 0 000V 2 Related Command the command used to query the voltage value set the maximum value set or the minimum value set VOLT MAXIMIN Return command parameters numerical value For example 1 If you want to query the voltage value set then the command sent is VOLT lt LF gt If the return command of a power supplier is 10 0000 then the voltage value set of the power supplier is 10 0000V 2 If you want to query the maximum voltage value set
17. e trigger by keyboard is effective Remote Control Function gt Output Contr There are three modes under the remote control function LATCHED FOLLOW OFF 17 M88XX Series Programmable DC Power Suppliers LITCHED Mode The output of power supplier will be turned off when testing out the change in voltage level from high to low from TRQ port FOLLOW Mode M88XX series power suppliers are not available of this function for while OFF Mode The output status of M88XX series power suppliers are not affected by RI input level Fault Indication Function gt DFI Status DFI results from following five sources Quest OPER StEV Requ Off Setting Password for Function Keys gt Key Lock Set This instruction can set a password 1 through 4 digits to lock the function keys operation After setting the password all the function keys on the front panel will be locked except the key COn Of You must enter the correct password to unlock them and then you can continue to do the function key operation If you don t want to lock the function keys please don t press any number key when you enter the Key Lock Set item just press key to unlock it Note When shipped from factory there 1s no password and function keys The start bit of your desired password shouldn t be 0 List Operation gt List Set You can set every single step value and duration time by new list operation so as to get different output list The parameters of
18. ed and inexperienced users can be acquainted with the new products quickly Meanwhile the chapter also clarifies some preliminary checkout that should be made prior to operation to make sure the normal running of the products 3 1 Front panel and Rear panel The front panel layout of M881X Series power supplier is as follows Picture 3 1 The Front Panel of M881X Series Power Suppliers The upper half is black VFD display screen and knob The bottom half left side to right side is Numberic keys 0 9 ESC key Function keys Up Down keys Enter key Input terminall and Output terminal The rear panel layout of M881X is as follows CAT Il T 5 S 99184 ONO Q Picture 3 2 The Rear Panel of M881X Series Power Suppliers SIN UU D Cooling Window 2 Multifunction Interface Connector Nanjing Maynuo Electronics Co Ltd 3 9 Pin COM Interface 4 Power Switch Key 110V 220V 5 Power Socket 3 2 Preliminary Checkout The following steps help you verify that the power supplier is ready for use 1 Check the list of supplied items Verify that you have received the following items with your power supplier If anything 1s missing contact your nearest Sales Office o One power cord for your location o The user s manual o One CD o One certification of approval o One communication cable only when you have bought communication accessories o One testing line 2 Connect the power cord a
19. eration in detail from the following parts Voltage Set Operation Current Set Operation Saving and Recalling Operation Menu Operation Output ON OFF Operation Remote Measurement Function Milliohmmeter Function Voltmeter Function 4 1 Key Layout E aa ae EE Recall Multifunction Keys Picture 4 1 Operation Panel Picture Multifunction Keys Directions Numberic keyss Menu operation key List output operation Voltmeter and milliohmmeter switch button Choosing 0 1W power output operation when the instrument is used as 10 Nanjing Maynuo Electronics Co Ltd milliohmmeter Choosing IW power output when the instrument is used as milliohmmeter 10W Choosing 10W power output when the instrument is used as milliohmmeter Esc Esc key can be exited from any working condition Function Keys Direction Cv set_ Setting the voltage value T Setting the maximum current value Saving the current settings to a particular storage locations Save Recall Recalling the saved settings Menu Menu operation setting the parameter On Off Control the output state Shift Used together with multifunction key to perform diversity functions and applications for example shift Menu can perform menu function Up key choosing menu item in menu operation or to increase the output voltage Down key choosing menu item in menu operation or to reduce the output voltage Confirm
20. eries power suppliers are powered on Solution Two Stepl Power on the M88XX series instrument Step2 Press key Step3 Press the numeric keys 0 to 9 to enter the voltage value you wanted Step4 Press to confirm the value Close knob lock function when you in config menu also can use following two operations 1 Use upper revolving encoder directly to adjust voltage 2 Press V set button then use upper revolving encoder to adjust voltage 4 4 Constant Current Operation The constant current output range is from OA to the maximum current value of each type It is very easy for you to set the constant current output Step Power on the M88XX series instrument Step2 Press key Step3 Use the numeric keys 0 to 9 to enter the voltage value you wanted Step4 Press key to confirm the value IF you close knob lock function in config menu can use following operation Press V set button then use upper revolving encoder to adjust voltage 4 5 Saving and Recalling Operation You can store up to 50 different output states 1n storage register locations so that you can recall the saved settings quickly This kind of store operation can be performed by the keys C Save and 12 Nanjing Maynuo Electronics Co Ltd Recall ocated in the front panel When the fast recalling is activated you can press the numberic keys 0 to g to invoke the corresponding data Each output state includes 1 Constant voltage value 2 Constant current
21. file is set as 20 2 Related command query the single step count of the current list files LIST COUNt Return parameter lt count gt Command LIST MODE mode 1 This command is used to set the working mode of the list operation files Parameters there are three modes CONTinuous continuous mode STEP single step mode LOOP loop mode Return command none For example Command sent LIST MODE CONT lt LF gt means the working mode of list files are set as continuous mode 2 Related command query the setting mode in the current list files LIST MODE Return parameters lt mode gt Command LIST VOLTage lt count gt lt value gt 1 This command is used to set one appointed single step voltage value of a list operation file Parameter count is appointed single step count value is the voltage value set Unit V Return command none For example command sent LIST VOLT 1 5 lt LF gt means to set the voltage value of the first step of the list file as 5 000 V 2 Related command query the voltage value of the appointed step of the current list file LIST VOLTage count Return parameters value For example Command sent LIST VOLT 1 lt LF gt means to query the voltage value set of the first step of the current list file Command LIST CURRent count value 1 This command is used to set the current value of the appointed single step of list operation files Parameters coun
22. ies power suppliers are more cost effective M88XX Series power suppliers features Low Periodic And Random Deviation PARD and noise e High resolution and accuracy 0 1mV 0 01 mA nstalling a high accuracy 5 1 2 voltmeter and milliohmmeter e Supporting high accuracy and dynamic programming output e High luminance VFD screen and two lines amp four ways display e Smart fan will be automatically initiated according to the temperature e Supporting remote voltage compensation and multidata storage e Supporting external trigger input and output Power on self test software calibration and standard designed instrument stand e Supporting GPIB RS232 RS485 USB application Nanjing Maynuo Electronics Co Ltd Chapter2 Technical Specifications 2 1 Main Technical Specification M881X Series power suppliers technical specification table Input Rating Voltage 0 30V 0 75V 0 150V Voltage lt 0 01 0 5mV lt 0 01 0 5mV lt 0 01 0 5mV V Load Regulation 0 12V Accuracy 0 02 t2mV 0 50V Accuracy 0 02 5mV LOW 0 1000mQ Accuracy 0 2 3 mQ 1000 10000 mQ Setting Value Resolution Readback Value Resolution Setting Value Accuracy Readback Value Accuracy Periodic And Random Deviation Milliohmmeter Accuracy Accuracy 0 2 6 mQ Working Condition 0 40C 0 90 RH Power Required AC 110V 220V 10 50 60 HZ M88XX Series Programmable DC Power Suppliers MS85X Series power suppliers technical specification table
23. ing value Knob Lock Set Off Default The knob is unlocked and rotating the knob will cause change of the setting value Flemote Meas On Activating the remote meas mode Rear panel meas mode Off Default Activating the front panel meas mode Current Unit Set mA A Default Curren unit A Default 50HZ Match 50HZ 50HZ Default Match Power Off Default Match 50HZ 4800 Setting the baudrate as 4800bps 9600 Default Setting the baudrate as 9600bps 19200 Setting the baudrate as 19200bps 38400 Setting the baudrate as 38400bps Baudrate Set None Default Setting no parity bit Comm Parity Even setting comm parity as even parity bit Setting comm parity as odd parity bit Trigger Def Trigger mode Port Mode RUDFI fee Digital I O Digit port Key Lock Set Password Entering password and then pressing the key Enter to unlock the password Exit When accessing to System Set item the following menu items will be displayed on the VFD display screen by pressing the keys A and V setting the maximum output voltage 14 Max Volt Set Nanjing Maynuo Electronics Co Ltd Step Inputting the voltage step value and pressing Step Volt Set me c up down keys to change it Exit When accessing to the List Set item the following menu items will be displayed on the VFD display screen by pressing the keys A and V Load List File Read list Edit List File Continuous mode once repeat
24. key 4 2 Front panel Operation Overview EE The following section describes an overview of the front panel keys before operating your power supplier The power supplier 1s shipped from the factory configured in the front panel operation mode At power on the power supplier 1s automatically set to operate in the front panel operation mode When in this mode the front panel keys can be used When the power supplier 1s 1n remote operation mode you cannot use the front panel A change between front panel and remote operation modes will not result in any change in the output parameters You can change the front panel and remote operation modes by PC The output of the power supplier can be enabled or disabled from the front panel by pressing 1 M88XX Series Programmable DC Power Suppliers the key COn Off The VFD display shows the current operating status of the power supplier with annunciators When it is powered on the VFD will display two lines of data The first line shows the actual voltage value actual current value and power supplier s status while the second line shows the voltage value that can be measured by voltmeter and output setting value of the M88XX Series power suppliers 4 3 Constant Voltage Operation The constant voltage range is from OV to the maximum voltage value of each model It is very easy for you to set the constant voltage output Solution One Press the A and V keys to change the value when the M88XX S
25. lay That means to wait for a trigger 31 There are three trigger modes for automatic test d Press the key On Off to trigger e Press the key Shift 3 to trigger f Become the high voltage level to the low voltage level by Trig in at the rear panel and last more than 5mS 32 When the power supplier 1s having the automatic test the word Wait will be showed at the right lower corner of the VFD display When in pause mode the word Stay will be showed at the right lower corner of the VFD display When one test is finished the test result Pass or Fail will be showed at the right lower corner of the VFD display 33 When one test 1s finished users can press the up down keys to make one single step worked manually At the moment step n will be showed on the VFD display indicating the step which 1s working then Han is showed indicating that the load is in hand operated single step test state followed by the test results being showed at the right lower corner of the VFD display 4 7 Output On Off Operation When in front panel operation you can press the key QVOff to control the output on off state When in remote control you can send SCPI order Output ON OFF to control the output sate The current setting values will not be changed because of the output on off operation 4 8 Remote Measurement Function When the load consumes high current the power supplier will produce voltage drop in the connecting wire between power supplier
26. nd turn on the power supplier When you turn on the power supplier the VFD display screen will light up briefly and the power supplier performs its power on self test Please check if there 1s any stroke loss on VFD display Warning The power supplier 1s shipped from the factory with a power line cord that has a plug appropriate for your location Your power supplier 1s equipped with a 3 wire grounding type power cord The power supplier is grounded only when the power line cord is plugged into an appropriate receptacle Do not operate your power supplier without adequate cabinet ground connection 3 3 If the Power supplier Does Not Turn On Use the following steps to help solve problems you might encounter when turning on the instrument 1 Verify that there is AC power to the power supplier First verify that the power cord 1s firmly plugged into the power receptacle on the rear panel of the power supplier You should also make sure that the power source you plugged the power supplier into 1s energized Then verify that the power supplier is turned on 7 M88XX Series Programmable DC Power Suppliers 2 Verify the power line voltage setting The line voltage 1s set to the proper value for your country 110VAC or 220VAC when the power supplier is shipped from the factory Change the voltage setting 1f it s not correct 3 Verify that the correct power line fuse is installed If the fuse was damaged please see the table bel
27. onfirm 7 When VFD display screen show the item List x Steps xxx press numberic keys to set the total list steps x Press the key Enter to confirm 8 When VFD display screen show the item List File x Loop Mode press the key A and V to select operation mode Loop Mode means to looping execute list file Continuous means to execute all steps in the list file once a triggle Step Mode means one triggle one step 9 When VFD display screen show the item Step 1 Time xxxxx mS press numberic keys to set time for step 1 press the key Enter to confirm 10 When VFD display screen show the item Step 1 Volt xxxxx V press numberic keys to set voltage press the key Enter to confirm 11 When VFD display screen show the item Step I Curr xxxxx A press numberic keys to set current press the key Enter to confirm 12 Repeat step 9 10 11 to complete all steps in list file 13 Repeat step 5 to 15 to edit other list files 1f needed 14 Press V to select Load List File press the key Enter to confirm 15 Electronic load is in the LIST MODE VFD display screen shows OFF in the right when output is on VFD display screen shows List in the right when output is off Press key On Off to execute Press key Shift 2 or Esc to exit Press key Shift 2 direct to excute the last list file 16 Under loop mode electronic load looping executes automatically Please find the following table 19 M88XX Series Programmable DC Power Suppliers at
28. ot path The following Commands are used short type mnemonic format 28 Nanjing Maynuo Electronics Co Ltd Command MEASure VOLTage Command MEASure VOLTage is used to read output voltage Return command Numerical Return parameters Unit V Example Send command MEAS VOLT lt LF gt if return command is 12 560 it means the current voltage value is 12 560V Command MEASure CURRent Command MEASure CURRent is used to read output current Return command Numerical Return parameters Unit A Example Send command MEAS CURR lt LF gt if return command is 1 245 it means the current current value is 1 2454 Command MEASure DVM Command MEASure DVM is used to read input voltage of the voltmeter in the power supply Return command Numerical Return parameters Unit V Example Send command MEAS DVM lt LF gt if return command is12 560 it means the current current value is 12 560V 6 2 4 Setting Command Command OUTPut bool 0 Command OUTPut bool is used to set the output of the power to open or not Return command None Parameters bool type parameters 0 OFF 1 ON Example send command OUTP 1 lt LF gt Power output is set to open 1f successful 1 Related command Query power output status Return command parameter 1s bool Command MODE mode 1 Command MODE mode is used to select the power operating mode That is command set mo
29. ow to replace the fuse for your power supplier Fuse Description 110VAC Fuse Description 220VAC M8811 TSA 250V T3 15A 250V M8812 TSA 250V T3 15A 250V M8813 TSA 250V T3 15A 250V M8851 TIOA 250V T6 3A 250V M8852 TIOA 250V T6 3A 250V M8853 TIOA 250V T6 3A 250V 4 How to replace the power line fuse Open the plastic cover which locates at below the power input socket in the rear panel of the power suppliers by screwdriver then you will see the fuse Please replace the damaged fuse with the matched fuse 3 4 How to Adjust the Carrying Handle To adjust the position grasp the handle by the sides and pull outward Then rotate the handle to the desired position There are following three positions for you to choose Picture 3 3 M88XX Series Power Suppliers Viewing Positions 3 5 How to Rackmount the Instrument Nanjing Maynuo Electronics Co Ltd The power supplier can be mounted in a standard 19 inch rack cabinet and be easily applied to your testing system If you want to rackmount the M88XX Series please buy MRO1 rack kit Note Remove the carrying handle the rubber coating and the foot on the rear panel before rackmounting the instrument DDDCOJCO C23 LDJDDOJC3 C3 LIIDIDLDICO C Of esi e C D E psisesis looo BARERA Picture 3 5 To Rackmount Two Instruments Side by Side M88 XX Series Programmable DC Power Suppliers Chapter 4 Panel Operation This chapter mainly introduces the front panel op
30. ps 9600bps 19200bps 38400bps Before the communication you must make sure that there 1s same baud rate between the power supplier and the host computer Default baud rate is 9600bps Setting Address gt Sour Address This instruction can set the communication address of each power supplier The address range 1s from 0 to 30 Before the communication you must make sure that there is same address between the power supplier and the host computer Default address is 0 Operation steps Press the keys CShift and to access to the menu function When the VFD display screen shows the item Config press the key to confirm Press the keys A and V to get the item Sour Address then press the key to confirm When the VFD display screen shows Address choose the number keys from 0 to 9 to set the address followed by pressing the key to confirm Press the key esc twice to exit the menu operation Port Mode gt Port Mode M8811 M8812 M8813 M8851 M8852 M8853 are not available of this function for while Trigger Operation Shift Trigger Just as described above the trigger operation can also be applied to the list output operation There are three trigger modes for the power supplier Before performing the trigger function users need to select one trigger mode Trigger by keyboard pressing the keys C Shift and riggen The trigger operation will be initiated once when pressing the keys and under the condition that th
31. r is used to read the power of the error code and error message Return command Error Code error message Example send command SYST ERR lt LF gt Power supply return command 0 No Error or 50 Error Para Count or 70 Invalid Command etc Command SYSTem REM Command SYSTem REM is used to set remote control mode that 1s the PC control mode Return command None After sending successful the power has been in the remote control mode when REM appears in the right corner front panel Otherwise the previous operation is not valid Please switch to the power supply front panel controls by pressing Shift the number 7 key or send the command SYST LOC lt LF gt Command SYSTem LOC Command SYSTem LOC is used to set the power control mode for the panel Return command None Example In the remote control PC mode Send command SYST LOC LF After sending successful the power has been in the front panel control mode when REM disappears from the right corner of front panel Command SYSTem SENSe bool Command SYSTem SENSe bool is used to check the power is under remote measurements Return command None Parameters bool type parameters 0 OFF 1 ON Example send command SYST SENS 1 lt LF gt If successful Power supply is in the remote measurement 6 2 3 Measurement Command Commands described in this section are MEASure commands under the ro
32. r to the RS232 interface connector of computer directly by a standard RS232 cable Please use IT E131 to connect them 25 M88XX Series Programmable DC Power Suppliers Chapter 6 SCPI Communication Protocal 6 1 Communication command introduction M88 series programmable DC power supply support SCPI communication protocol SCPI communication protocol is a standard commands for programmable iInstruments which defines a standard set of communication commands Command for M88 series power supply can be divided into two categories basic commands IEEE 488 2 Common Command Set and command specified by M8800 software SCPI is case insensitive namely commands are not case sensitive and each command has an EOI end Instruction end lt LF gt that ASCII code character n that 1s line breaks decimal ASCII code 10 hex 0x0A Note All of the following commands to send back all require add lt LF gt The following statement appears in represents a semi colon the character can be written in commands or you can not write 6 2 Commomly used relevant command description 6 2 1 Basic command IEEE 488 2 Common Command Set Basic command inclues all IEEE 488 2 includes all general functions in IEEE 488 2 These functions are usually applied to support the IEEEA488 2 standard measuring instruments The group command with an asterisk started and no hierarchy Command IDN Command IDN is used for read the relative information of
33. radu dsdt 26 6 2 Commomly used relevant command description ssssssssssssss rer rennen 26 6 2 1 Basic command IEEE 488 2 Common Command Set ccccccccccccsssssssssseeeeeeecccceeeeeeeeesaaaeeeeeses 26 6 2 2 Command specified by MS800 SOTEWAEG irre E e oC Cnt oC te Gr ec tete 26 6 2 9 M asurement COMAN s eqs anions t Pp totu Cpu tO ORNA tee pn TOR CUR OR ERUNT NH E AG 28 6 24 Setting Command eben tantes ao eb OR be adu in hata diga Gti tuia taxed dias datio Mtt 29 6 25 List Operation CLIST Related Command seo ettet tpa Pete et t etit tee s 32 Occ ROTOR OIC ocn co FEE EH o EEAEIE REN DEDI IERI AREEN CENE S IER EE EPA REO DUMAS EYE OPER REIS ERE ONE ERI UR NN NOSE E PQIE RERUM 35 M88XX Series Programmable DC Power Suppliers Chapter 1 Introduction M88XX Series power suppliers are high performance single output programmable DC power suppliers with communication interface possessing the character of fast rise time speed The rise speed of M8811 power supplier can be less than 10mS and that of M8851 can be less than 20mS The combination of bench top and system features in these power suppliers provides versatile solutions for your design and test requirements The M88XX Series can not only be programmed through the keyboard on the panel but also be functioned as voltmeter and milliohmmeter which will bring great convenience to the users As a regeneration product of ordinary programmable power suppliers M88XX Ser
34. s 10 AM TRC Ve TAY ON dna erento rette ceti tian deen aceuasdnaasnscie bagunsd E todanislbanaetacaiedatan Con monum E anita 10 2 2 hront panePODerFattoRi O VOLVIGW zich ai oh teac nat aaa ualiclatcateuatahasedlataestouatahasadstetutouatadatadetetuteuatatenatcbensetebaeast 11 Ao Cons ant VoH Opera Oa E E EE EA T A N 12 4A Constant Current Operation seirena E E A a E 12 4 5 Saving and Recalling Operatioti usen ice a rt Nen eoe ed ert ex od E E ads ae 12 AO Meni OPETI Oar tpe HP tp Dep MI Ma eU M I M LE e 13 209 Mise BIS SL HB Natasa ER 13 Ao 2 Menm FUNE ON en E o E m Tr Xr 15 Tr output Onsott Operation a echte patte a igen M LR D MEI LI RUM a 21 4 5 RenoteMedasuremeht MUNGO aeaea aa E E E Catari reab quc rre lina rime IUe GE ote eu aD dE DUREE RES 21 TINON r AC HOD Cre oce petiam aa ree ahah eutadeiiwe Eotastet teed iae dioe Eon tov Redi renes d idea fra die Reden 22 AO Vol meter Fut LON urge te itii ero oh tiem E adit names Ead acte atte Seien Le dde 23 Chapter Remote Operation Mode pP E A E REOR ae 24 So MESES Te omiriumcation C ableccsedeien dba that m dta ees tuor dea cadat dese Ufo E MEdRu Seu n EO e ae tU Cd 24 3 2 Communication between Power Supplier and PC eet e teet tete rom o e OS Et tr pri ds 24 Chapter 6 SCPI Communication Protocal ccce e eee eee eee ee eee e esee e eese esses ss sssssaas 26 6 1 Communication command IDCOGQUCLIOTL secos und deos Qu needing eti oet edi aiat donee bn esa tel t
35. s 20 000 then the upper limit of the current voltage 1s set as 20 000V 2 Command sent VOLT PROT MAX lt LF gt If the return command of the power supplier is 76 000 then the maximum voltage value of the power supplier which can be set is 76 000V 6 2 5 List Operation LIST Related Command Command LIST AREA num 1 This command is used to set the list location division mode Parameter 1 2 4 8 1 Set the list operation as 1 200 steps 2 Set the list operation as 2 100 steps 3 Set the list operation as 4 50 steps 4 Set the list operation as 8 25 steps For Example Command sent LIST X AREA 8 lt LF gt means the list operation is set as 8 25 steps 2 Related command query the location division mode of the list operation LIST AREA Return parameters lt num gt Command LIST RCL num This command 1s used to recall the saved files from a certain location so as to make them executed in the list Parameter 1 8 Return command none For example Command sent LIST RCI 2 lt LF gt Means to recall the list file from the storage register location2 and make the file executed Commandqd LIST COUNt count 1l This command is used to set the single step count of list operation files Parameter the range of count is 17 200 Return command none For example Command sent LIST COUN 20 lt LF gt 32 Nanjing Maynuo Electronics Co Ltd Means the single step count of the list operation
36. t is the appointed single step count value is the current value set Unit A Return command none For example command sent LIST CURR 1 2 lt LF gt means to set the current value of the first step of the list file as 2 000A 2 Related command query the current value of the appointed single step of the current list file LIST CURRent count 33 M88XX Series Programmable DC Power Suppliers Return parameter lt value gt For example Command sent LIST CURR 1 lt LF gt Means to query the current value set of the first step of the current list file Command LIST WIDTh lt count gt lt time gt 1 This command is used to set the delay time of the appointed single step of the operation files Parameters count 1s the appointed single step count time 1s the delay time set Unit mS Return command none For example command sent LIST WIDT 1 2000 lt LF gt means to set the delay time of the first single step of the list file as 2000mS 2 Related command query the delay time of the single step of the current list files LIST WIDTh count Return parameters lt time gt Command TRIGger When the trigger source is set as communication command trigger mode this command will give out a trigger signal which function can also be realized by pressing the keys Shift 3 located in the front panel Return command None For example command sent TRIG lt LF gt Command TRIGger SOURce mode This command is
37. uery the maximum current value set then the command sent is CURR MAX lt LF gt If the return command of a power supplier is 2 0000 then the maximum current value set of the power supplier 1s 2 0000A 3 If you want to query the minimum current value set then the command sent is CURR MIN lt LF gt If the return command of a power supplier is 0 0000 then the minimum current value set of the power supplier 1s 0 0000A Command VOLTage PROTection Value 1l This command is used to set the upper limit of the power suppliers that is the maximum voltage value Parameters numerical value MAX MIN Unit V Return command none For example 1 Command sent VOLT PROT 30 lt LF gt means the upper limit of the current voltage value of the power supplier is 30 000V 2 Command sent VOLT PROT MAX lt LF gt means the maximum voltage value of the power supplier is set as the upper limit of the current voltage value of the power supplier 3 Command sent VOLT PROT MIN lt LF gt means the minimum voltage value of the power supplier is set as the lower limit of the current voltage value of the power supplier 2 Related command query the upper limit of the current voltage of the power 3l M88XX Series Programmable DC Power Suppliers supplier VOLTage PROTection MAX Return command parameters numerical value For example 1 Command sent VOLT PROT lt LF gt If the return command of the power supplier i
38. value 3 Maximun voltage setting value 4 Maximum output voltage value Stepl After you setting an output state CV value CC value and Maximum voltage press the key Step2 Use the numeric keys o to 9 or A and V keys to select the memory location the range is 1 to 50 which you want to store in Step3 Press to confirm the memory location Step4 Press key Step5 Use numeric keys 0 to 9 or A and V keys to select the states which you want to recall Step6 Press key to confirm Then the saved settings will come out 4 6 Menu Operation 4 6 1 Menu Description Press the key to access to the menu function and at the moment theVFD display screen shows the menu items You can select the menu items by pressing the A and V keys or by rotating the knob and then press the key to enter in the menu item you wanted Or you can press the key Eso to get back to the higher level menu The first level menu includes Config System set List Set Auto test Output Timer When accessing to Config item the following menu items will be displayed on the VFD display screen by pressing the keys A and V MN NU dE iN power supplier is powered on off the power supplier M88XX Series Programmable DC Power Suppliers On Default The buzzer will sound when any key was Key Sound Set pressed Off the buzzer will not sound when any key was pressed On The knob is locked and rotating the knob will not cause any change of the sett

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