IT6900A series user manual
Contents
1. SEC Setup single step delay time 0 1 9999 NEXT NES continue the edit of next step YES INO End up the list file edit REPET 1 65535 Set the cycle time of list file NO Unsave the current list file SAVE TE Save the list file to appointed document EXIT quit the system menu POWER INFO MODEL unit model VER the softvvare version SN 1 the first six number of SN SN 2 the middle six number of SN SN 3 the last six number of SN EXIT Quit the information menu EXIT MENU Out the main menu Note Pressing tuten can enable you to quit any function setting 2 menu functions Maximum voltage set MAX VOLT The range of setting voltage is from OV to rated voltage You can press GseD Menu button to enter the menu then press direction key to select gt MAX VOLT item Press button to confirm After you set the max voltage value the output voltage value can only be set less than the max voltage Our default max voltage value is the rated value Power on parameters set gt P MEN This item can set power on state of parameters If you select RESET item then all the parameters will be initialized to the factory setting Output voltage and current will always be OV OA Or the output value will be the same with last power off state The default setting is RESET item Power On Output State gt P OUT This item can set the power on output state If you select keep item that indicates the power on output state is the same with l2. Forbidden to connect DB9 connector in power supply directly with PC or other RS232 port Chapter7 Communication protocal 7 1 SCPI order table IEEE488 2common orders CLS ESE ESE ESR IDN OPC OPC PSC PSC RST SRE SRE STB TRG SAV RCL TST STATus QUEStionable EVENt STATus QUEStionable ENABIe STATus QUEStionable ENABle STATus QUEStionable CONDition System orders SYSTem VERSion SYSTem ERRor SYSTem REMote 28 SYSTem LOCal SYSTem RWLock SYSTem BEE Per SYSTem COMMunicate GPIB RDEVice ADDRess SYS Tem COMMunicate GPIB RDEVice ADDRess7 SYSTem INTerface Display relevant orders DISPlay WINDow STATe DISPlay WINDow STATe DISPlay WINDow TEXT DATA DISPlay WINDow TEXT DATA DISPlay WINDow TEXT CLEar Trigger orders TRIGgerfl IMMediatel TRIGger SOURce TRIGger SOURce7 Output orders SOURce OUTPut STATe SOURce OUTPut STATe SOURce JOUTPut TIMer STATe SOURce JOUTPut TIMer STATe SOURce OUTPut TIMer SOURce OUTPut TIMer Current control orders SOURce CURRent LEVel IMMediate AMPLitude SOURce CURRent LEVel IMMediate AMPLitude SOURce CURRent LEVel UP IMMediate AMPLitude SOURce CURRent LEVel DOWN IMMediate AMPLitude SOURce CURRent LEVel IMMediate STEP INCRement SOU
3. Order syntax SOURce VOLTage LEVel TRIGgered AMPLitude lt NRf gt parameters MIN to MAX unit V Query syntax VOLT TRIG MINimum MAXimum Return parameters lt NR2 gt VOLT PROTection lt volts gt MINimum MAXimum This order is used to set the upper limit of over voltage protection point lf the output voltage value is higher than the upper limit of OVP then we can assume that internal parts has been shorted Query state register OV bit has been set When power supply is protected then we can through order VOLT PROT CLE to clear the OVP state Order syntax SOURce VOLTage PROTection LEVel lt NRf gt parameters MIN to MAX unit V Query syntax VOLT PROT MINimum MAXimum Return parameters lt NR2 gt 43 VOLT PROTection STATe 0 1 OFF ON This order is used to open or close OVP function i e to set the state of OVP Order syntax SOURce VOLTage PROTection STATe parameters 0J 1JOFFJON query syntax VOLTage PROTection STATe Return parameters OI VOLT PROTection TRIPed This order is used to inquire the execute state of OVP If the return value is 1 this represents that the OVP circuit has been triggered and the OVP state does not be cleared If the return value is O then it represents the OVP circuit does not be triggered Order syntax SOURce VOLTage PROTection TRIPed Return parameters OI VOLT PROTection CLEar This order is used to clear the state of OVP After you excuting this or
4. When query status bit enable register the power will return a decimal number this number is the binary weighted of enable register Order syntax SRE lt NRf gt Parameter 0 255 Reset value Consult PSC order Example SRE 128 Quest syntax SRE Return parameter lt NR1 gt Reference Order ESE ESR PSC STB STB This order can read the data from status byte register This order is similar to a statistics of series but the equivalent of another instrument orders it returns the value the same as series statistics but after this order is executed the bit 6 value of status byte register is cleared while the status bit will not be cleared when system statistics implemented Quest syntax STB Parameter None Return parameter lt NR1 gt Reference order CLS ESE ESR TRG When the trigger mode of the power supply is BUS order trigger mode the order will Generates a trigger signal The function is the same as TRIGger IMMediate 36 Order syntax TRG Parameter none Reference order TRIG TRIG SOUR SAV This order can save the parameters of power supply to register These parameter contains CURR CURR STEP CURR TRIG CURR PROT DISP OUTP TRIG SOUR VOLT VOLT STEP VOLT TRIG VOLT PROT VOLT PROT STAT Order syntax SAV lt NRf gt Parameter 1 72 Example GAN 3 Reference order RCL RCL This order can recall the parameter you saved before from the register Order syntax RCL lt NRf gt Parameter 1 72 Exam
5. 5 6 Not 0 Always set to 0 Used 7 PON 128 Power On Power has been turned off and on since the last time the event register was read or cleared Query status register provide some information of the power such as over voltage over temperature over current you can also monitor the change of the constant current and voltage status via the register for example data bit 0 is the constant current mode of the power supply data bit 1 is constant voltage mode of the power supply and so on Bit Decimal Definition Value 0 Voltage 1 The power supply is was in the constant current mode 1 Current 2 The power supply is was in the constant 33 voltage mode 2 3 Not used Always set to 0 4 Over 16 The fan has a fault condition temperature 5 8 Not used 0 Always set to 0 9 Over voltage 512 The overvoltage protection circuit has tripped 10 Over Current 1024 The over current protection circuit has tripped 11 15 Not used 0 Always set to 0 Status byte register records the information of other registers The query data is temporally stored in the output buffer of the power supply and feedback to customer through BIT4 bit The data bits in Status byte group will not be latched when the information in event register is changed the correspoOnding bit in status byte register will subsequently be changed Bit Decimal Defin
6. CALibration VOLTage LEVel lt point gt parameters P1 P2 P3 P4 CALibration VOLTage DATA lt numeric value gt Return actual output voltage value of calibration point Order syntax CALibration VOLTage DATA lt NRf gt Parameters lt NRf gt Example CAL VOLT 30 0002V CALibration CURRent LEVel This order can set current calibration point P1 P2 must be calibrated orderly Order syntax CALibration CURRent LEVel lt point gt parameters P1 P2 CALibration CURRent DATA lt numeric value gt Return actual output current value to calibration point Order syntax CALibration CURRent DATA lt NRf gt parameters lt NRf gt examples CAL VOLT 3 0002A CALibration STRing Set the calibration information Order syntax CALibration STRing lt parameters gt parameters The longest length is a string including 24 letters i e related information the customer records during he running the calibration process such as the calibration time and number of times and so on Example CAL STR 2005 1 9 20 12 CALibration STRing Check original calibration information Query syntax CALibration STRing Return parameters calibration information saved in power supply CALibration INITital This order is used to reset parameters to factory default Order syntax CALibration INITital parameters none 48
7. GPIB RDEVice ADDRess Returned parameter lt NR1 gt SYSTem INTerface This order is used to switch the communication interface Order syntax SYSTem INTerface lt GPIB USB RS232 gt Display relevant orders DISPlay This order is used to turn on off the VFD display When the display is off the output and will not be displayed on the VFD at the same time all the LED except for ERROR led will not be off When the control mode is local the display will turn on automatically press LOCAL button can switch the control mode from remote to 39 local Order syntax DISPlay WINDow STATe lt bool gt Parameter O 1 OFFION Example DISPlay 1 quest syntax DISPlay Returned parameter 0 1 DISPlay TEXT lt Reference value gt This order is used to display a text on the VFD TA message can display up to 12 characters extra characters will be ignored Commas periods and semicolons will not be treated as a separate character but will be contained to the character before and display Order syntax DISPlay WINDow TEXT DTAT Quest syntax DISPlay TEXT DISPlay TEXT CLEar This order is used to clear the text displayed on the front panel Order syntax DISPlay WINDow TEXT CLEar Trigger orders TRIGger This order is used to generate a trigger signal vvhen trigger source is in BUS mode The function of this order is similar to TRG Order syntax TRIGger IMMediate parameters none related orders TRG TRIG SOUR TRIGg
8. Operate Event Event Register Enable Register o 0 mg Es ng le A no s used used not used Event register is read only register used to store the implementation status of the 32 power the data used in the event register latches in the form once the data is stored subsequent data will be completely ignored Even can t changed by re setting order RST or equipment restart but if query the data in event register or send clear order CLS clear status the event register will be automatically cleared The main content which the standard event register records is whether power output is turned on order syntax errors order execution errors self test or calibration errors query errors and so on Bit Decimal Definition Value 0 OPC 1 Operation Complete All orders prior to and including an OPC order have been executed 1 Not 0 Always set to 0 Used 2 QYE 4 Query Error The power supply tried to read the output buffer but it was empty Or new order line was received before a previous query had been read Or both the input and output buffers are full 3 DDE 8 Device Error A self test or calibration error occurred see error numbers 601 through 750 in chapter 5 4 EXE 16 Execution Error An execution error occurred see error numbers 211 through 224 in chapter 5 5 CME 32 Order Error A order syntax error occurred see error numbers 101 through 178 in chapter
9. appropriate for your location Your power supply is equipped with a 3 wire grounding type power cord the third conductor being the ground The power supply is grounded only when the power line cord is plugged into an appropriate receptacle Do not operate your power supply 3 2 Output Checkout The following procedures check to ensure that the power supply develops its rated outputs and properly responds to operation from the front panel m Voltage Output Checkout The following steps verify basic voltage functions without load 1 Turn on the power supply 2 Set the current value 20 1A 3 Enable the outputs PressOn O Key to let the ON annunciator and the CV annunciator turn on to light 4 turn on Meter mode press the METER key to light the button the Meter status Mark lights on the display is turned on Notice if the voltage value flash then the power supply is in Set mode Set mode means that the VFD display shows the setting output voltage and current Or the power supply is in Meter mode Meter mode means that the VFD display shows the actual output voltage and current 5 Set the voltage for the power supply Set different voltage values check the voltage value displayed on the VFD is close to the voltage value you set and to check if the VFD displayed current value is nearly zero 6 Ensure that the voltage can be adjusted from zero to the full rated value m Current Output checkout The following steps check basic curre
10. damage or loss of profit that might occur when using the electronic load Safety symbols Warning It reminds the user note some operating procedures practices conditions and other matters that may lead to human casualties Notes It reminds the user of some operating procedures practices conditions and other matters that may result in instrument damage or data lose for ever Connect it to safety earth ground using the wire recommended in the user manual The symbol on an instrument indicates that the user should refer to the operating instructions located in the manual A High voltage danger Certification and Quality Assurance IT6900A series programmable DC power supply fully meet all of the technical specification in the manual Warranty Our Company give one year warranty for the materials and manufacturing of the product since the date of shipment Warranty Service For the warranty service or repair the product the product must be returned to the designated maintenance units Return the product to us for warranty service the customer should pre pay the one way Freight to the maintenance department and our company is responsible for the return shipping cost If products are returned from other countries for maintenance service then the customer should pay all freight duties and other taxes Guarantee limit The guarantee does not apply to the damage caused by the following conditions Improper or inadequa
11. factory Change the voltage setting if it s not correct 3 Verify that the correct power line fuse is installed If the fuse was damaged please see the table below to replace the fuse for your 11 power supply Model Fuse Specifications Fuse Specifications 110VAC 220VAC IT6922A T4A 250V T2A 250V IT6932A T6 3A 250V T3 15A 250V IT6942A T12 5A 250V T6 3A 250V IT6952A T10A 250V IT6953A T10A 250V 4 How to exchange the fuse Open the small plastic cover below the power supply input socket on the back panel with a screwdriver and you can see the fuse in it please use the specifications in line fuse 2 System self check After power on normally the supply will enter self check test first About 1 second later If the EEPROM was damaged or the latest operation data in EEPROM was lost the VFD will display as below EEPROM FAIL If the last power status in EEPROM is lost then VFD will display information about 1 S as below SYST LOST If the calibration data in EEPROM is lost then VFD will display about 1S as below CAL LOST If the factory calibration data in EEPROM is lost and then the VFD will display about 1 S as below FACT LOST If the power supply is normal then VFD will display the output voltage and current status as below OFF 0 000V 0 0000A N Warning The power supply is shipped from the factory with a power line cord that has a plug
12. lt 0 01 3mV lt 0 01 5mV lt 0 01 8mV lt 0 01 15mV lt 0 01 15mV of current lt 0 05 2mA lt 0 05 4mA 0 05 6mA 0 1 10MA 0 05 10mA output offset Line regulation voltage lt 0 01 3mV lt 0 01 5mV lt 0 01 8mV 0 01 15mV 0 01 15mV of current lt 0 05 2mA lt 0 05 4mA 0 05 6mA 0 1 10mA 0 5 10mA output offset Setup voltage 1mV 1mV 1mV 1mV 1mV resolution current 0 1mA 0 1mA 0 1mA 0 1mA 0 1mA voltage 1mV 1mV 1mV 1mV 1mV Readback i 0 1mA lt 10A 0 1mA lt 10A resolution current 0 1mA 0 1mA 0 1mA 1mA gt 10A 1mA gt 10A Setup accuracy voltage lt 0 03 5mV lt 0 03 5mV lt 0 03 5mV lt 0 03 5mV lt 0 03 20mV within twelve months 290350 current lt 0 1 5mA lt 0 1 10mA 80 194415mA 80 194425mA 80 194425mA of output offset EE voltage lt 0 03 5mV lt 0 03 5mV lt 0 03 5mV lt 0 03 5mV lt 0 03 20mV resolution VV 25C25C current lt 0 1 5mA lt 0 1 10mA 80 194415mA lt 0 1 25mA lt 0 1 25mA of output offset Ripple voltage lt 5mVp p lt 8mVp p lt 15mVp p lt 20mVp p lt 50mVp p 20Hz 20MHz current lt 5mArms lt 6mArms lt 8mArms lt 15mArms lt 15mArms Sample rate 10HZ S Dimension SEN 214 5mmW x88 2mmHx354 6mmD 214 5mmW x88 2mmHx445mmD weight 7 7Kg 15Kg 4 2 supplementary characteristic State register capacity 9x8group operation state calibrationfrequency 1time year Radiating mode Fans suggested Op
13. parameters lt NR2 gt LIST SAVE This order is used to save the list file to specified memory region Order syntax SOURce LIST SAVE lt NR1 gt parameters 0 9 Example LIST SAVE 1 save the edited list file to the first set of memory region LIST LOAD This order can recall the list file saved before from specified memory region Sending query orders can inquire which group file you have recalled Order syntax SOURce LIST LOAD IMMediate lt NR1 gt parameters 0 9 example LIST LOAD 1 Query syntax LIST LOAD IMMediate LIST REPet This order can set the repeat count of LIST steps Order syntax SOURce LIST REPet lt NR1 gt Query syntax LIST REPet Calibration orders CALibration SECure STATe Set protection mode enable or disable when calibrating the power supply Order syntax CALibration SECure STATe lt ON OFF gt lt password gt parameters O 1 ON OFF 5811 Example CAL SEC 1 5811 CAL SEC OFF Query syntax CALibration SECure STATe parameters none CALibration INITital This order is used to reset the calibration parameters to default setting Order syntax CALibration INITital parameters none CALibration SAVe This order is used to save the calibration parameters in a nonvolatile memory Order syntax CALibration INITial 47 parameters none CALibration VOLTage LEVel This order can set voltage calibration point P1 P2 P3 P4 must be calibrated orderly Order syntax
14. parameters MIN to MAX unit V RST value MIN Query syntax VOLTage MINimum MAXimum 42 Return parameters lt NR2 gt Example VOLT STEP 0 01 set the stepping value to be 0 01V VOLT UP enable the output voltage increase one time VOLT STEP 0 02 set the stepping value to be0 02V VOLT DOWN enable the output value decrease one time VOLTage STEP lt value gt DEFault This order is used to service for VOLT UP and VOLT DOWN two orders It can set the stepping value of voltage Besides VOLT STEP DEF order can inquire the stepping resolution of voltage of this unit For example the stepping setting value is 0 01 it represents 10mV Order syntax SOURce VOLTage LEVel IMMediate STEP INCRement lt NRf gt parameters MIN MAX RST value the stepping resolution of voltage of this unit Query order VOLT STEP Return parameters lt NR2 gt VOLT TRIG lt volts gt MINimum MAXimum This order is used to set a voltage to be triggered At first this voltage value is saved and only when receiving a trigger signal will the power supply output with this voltage value Sending order VOLTage will not affect the setting value in this order Sending query order unit will return the previous setting value lf customer does not utilize order VOLT TRIG at the begining then the return parameters will be the value you set with order CURRent CURR TRIG MAX or CURR TRIG MIN orders will let you Know the max and min voltage you can set
15. syntax MEASure SCALar CURRent DC Return parameters lt NR2 gt FETCh CURRent This order is used to read the latest current to be processed from sampling buffer When you send this order then our unit will communicate with PC and sending the current data to PC This order will not affect our unit s setting or tigger the measurement operation lt only need the nearest reading it can get The returned readings will keep the old before it get a new data Order syntax FETCh CURRent DC Return parameters lt NR2 gt MEASure VOLTage This order can inquire the current output voltage value Order syntax MEASure SCALar VOLTage DC Return parameters lt NR2 gt FETCh VOLTage This order is used to read the latest preprocessed voltages from sampling buffer Order syntax FETCh VOLTage DC Return parameters lt NR2 gt MEASure POWer This order is used to measure the current output power value Order syntax MEASure SCALar POQWer DC Return parameters lt NR2 gt FETCh POWer This order can read the latest power value from the sampling buffer Order syntax FETCh POWer DC Return parameters lt NR2 gt MEASure DVM This order is used read the the latest measured value of DVM meter and return this value Order syntax MEASure SCALar DVM DC 45 Return parameters lt NR2 gt FETCh DVM This order is used to read the latest datas of DVM meter from the sampling buffer Order syntax F
16. the range DEF represents defaut value it also can be used to set value We can also send CURR UP and CURR DOWN orders to increase or decrease current the stepping value should be set with order CURR STEP If adjusted value has exceeded the current range then error information will be return error 222 Oder syntax SOUR CURR LE Vel IMMediate AMPLitude lt NRf gt parameters MIN to MAX unit A RST value MIN Query syntax CURRent MINimum MAXimum Return parameters lt NR2 gt Example CURR STEP 0 01 set the stepping value to be 0 01A CURR UP enable the output current increase value one time CURR STEP 0 02 set the stepping value to be 0 02A CURR DOWN enable the output current decrease value one time CURRent STEP This order is used to service for CURR UP and CURR DOWN two orders H can set 41 the stepping value of current Besides CURR STEP DEF order can inquire the stepping resolution of current of this unit For example the stepping setting value is 0 01 it represents 10mA Order syntax SOURce CURRent LEVel IMMediate STEP INCRement lt NRf gt parameters MIN MAX RST value the stepping resolution of current of this unit Query order CURRent STEP Return parameters lt NR2 gt CURRent TRIG lt current value gt MINimum MAXimum This order is used to set a current to be triggered At first this current value is saved and only when receiving a trigger signal will the power supply output with
17. this current value Sending order CURRent will not affect the setting value in this order Sending query order unit will return the previous setting value lf customer does not utilize order CURRent TRIG at the begining then the return parameters will be the value you set with order CURRent CURR TRIG MAX or CURR TRIG MIN orders will let you Know the max and min current you can set Order syntax SOQURce CURRent LEVel TRIGgered IMMediate INC Rement lt NRf gt parameters MIN to MAX unit A Query syntax CURRent TRIG MINimum MAXimum Return parameters lt NR2 gt Voltage control orders VOLTage lt volts gt MINimum MAXimum UP DOWN DEF CURRent lt current value gt MINimum MAXimum UP DOWN DEF This order is used to set the output voltage Nomatter what the voltage range you select currently the output voltage is subject to the newest setting value Besides MIN and MAX can be used as parameters MIN represents OV MAX represents the max value of the voltage range You may send VOLT MIN or VOLT MAX orders to quire the minmun and maximum voltage within the range DEF represents defaut value it also can be used to set value We can also send VOLT UP and VOLT DOWN orders to increase or decrease voltage the stepping value should be set with order VOLTage STEP If adjusted value has exceeded the voltage range then error information will be return error 222 Order syntax SOUR VOLTage LEVel IMMediate AMPLitude lt NRf gt
18. 0A CIT6922A IT6932A IT6942A power supply s size 214 5mmW x88 2mmHx354 6mmD refer to the Dimensions below Unit mm IT6900A CIT6922A IT6932A IT6942A power supply s dimensions 2 IT6900A CIT6952A IT6953A is Lengthened the size of it is 214 5mmW x88 2mmHx445mmD Chapter 2 Quick Start This chapter introduces the front panel the rear panel key functions and VFD display function of the power supply make sure that you can quickly know the appearance instruction and the key function before you operate the power supply Help you make better use of this series of power supply 2 1 The front and rear panel description OFF DN CG Beie Shift OVP OCP Timer Sense Ext Adrs Rmt Error Prot Lock MEIN E e gt oo o AN ON WAN VA P VA UN AL A AN TT H VFD display Rotary knob 3 Compound key the local switch key and power switch A Number keys and ESC Function keys UP DOWN LEFT and RIGHT key to move cursor output terminals H Cooling window 2 RS232 Communication cable interface 3 USB Communication cable interface 4 GPIB Communication cable interface 5 DVM input terminal Remote measurement terminal and the output terminal 6 ac power socket fuse contained Note the AC power switch is at the bottom of the power supply 2 2 Key introduction Key description see the table below Keys Name and the function Compound key co work with
19. 115200 You can enter the system menu from the front panel and then set the baud rate Data bits 8 Stop Bits 1 calibration none even odd EVEN 8 data bits have even parity ODD 8 data bits have odd parity NONE 8 data bits no parity Local Address 0 31 the factory default setting is 0 Parity None Start Bit 8 Data Bits Stop Bit 6 2 USB interface Use a Cable with two USB port to connect the power and the computer All power functions can be programmed via USB The USB488 interface functions of the power supply described as below interface is 488 2 USB488 interface Interface Receiver REN CONTROL GO TO LOCAL and LOCAL LOCKOUT request Interface receive MsgID TRIGGER USBTMC order information and will pass TRIGGER order to the functional layer Power USB488 device functions described as follows devices can read all of the mandatory SCPI orders device is SR1 enabled device is RL1 enabled device is DT1 enabled 6 3 GPIB interface First Connect the GPIB interface on the power supply and the GPIB card on computer via IEEE488 bus must be full access and tighten the screws Then set the address the address range of the power 0 to 30 can set by the function key on the front panel press the Let key to enter the system menu function find the GPIB address setting by ED button type the address GD key to confirm GPIB address is stored in nonvolatile memory line 27 Note
20. ETCh DVM DC Return parameters lt NR2 gt MEASure STATus This order is used to switch the display of VFD board between actual output state and DVM state Order syntax MEASure SCALar STATus lt DVM NORMAL gt List operation orders LIST FUNCtion This order is used to select the state of list mode Order syntax SOURce LIST FUNCtion lt 0 1 gt Query syntax SOURce LIST FUNCtion Return parameters OI LIST VOLTage This order is used to set the steps of list file and voltage of current step Order syntax SOURce LIST VOLTage lt NRf gt parameters MIN MAX unit V Example LIST VOLT 1 3V set the first step s voltage to be 3V Query syntax LIST VOLTage example LIST VOLT 1 inquire the first step s voltage Return parameters lt NR2 gt LIST CURRent This order is used to set the steps of list file and current value of current step Order syntax SOURce LIST CURRent lt NRf gt parameters MIN MAX unit A Example LIST CURR1 2A _ set the first step s current to be 3A Query syntax LIST CURRent Example LIST CURR 1 inquire the first step s current Return parameters lt NR2 gt LIST TIMEr This order is used to set the steps of list file and delay time of current step This order is used to set delay time of every steps Order syntax SOURce LIST TIMEr 46 parameters MIN MAX MIN MAX unit S example LIST TIME 1 3 Query syntax LIST TIMEr Example LIST TIME 1 Return
21. OVP Menu Save DVM Trigger shit ac y 99 Ch Local Local switch key switch from remote mode to local operation mode Power Power on key 0 9 Numeric keys OVP Voltage set key set the output voltage over voltage protection point for the power supply Mee Current set key set the output current menu function key to set the relevant Parameters for the power supply Save Callback key to call up a set value of system parameters already stored storage key to save system parameter settings DVM Meter key to switch from value set panel and the actual output value display voltage meter function keys to switch to the measure state of the voltage meter Trigger Enter key to confirm the number entered and operation trigger button which is used to trigger the List test Lock Output on off keys control power output state keypad lock function keys used to lock the panel buttons Calp Left and right movement keys used to set the value to adjust the cursor to the specified location AV Up and down keys used to select a item in the menu or increase decrease the output voltage or current values Cancel return keys 2 3 VFD Description char Function description char Function description OFF Output is off Timer Se on timer function is cv The power supply is in Sense No constant voltage mode cc The power supply is in E
22. Power supply can save some often used parameters in a nonvolatile memory capacity is 9 8 groups This function can make the operations more convenient Customer can save and recall parameters quickly GRP1 This indicates saving power supply parameters in 1 9 groups Press Save and the group number 1 9 can save the parameters in corresponding groups GRP2 This indicates saving the parameters in 10 18 groups Press kl Save saved group number 1 9 can save related parameters Note that the current number 1 represents parameters are saved in 10 groups Number 2 represents the parameters are saved in 11 groups 21 GRP3 GRP8 by parity of reasoning Timer Set gt TIMER SET This item is used to set the time on load function In ON mode the indicator light Timer will be lit on the VFD screen When output of power supply is opened timer will begin to work after reaching the definite time output will be off automatically If in OFF mode the timer function will not be enabled The default set is in OFF option Reset gt RESET This item is used to reset all items in the menu lf you select gt YES then unit will restored to factory setting lf you select gt NO all setting in the menu will remain unchanged List Mode gt List Set Before you edit a list file please set the trigger mode manual mode Press set button to enter the menu then press direction key to select gt SYST SET option after that please pu
23. R1 gt Reference order CLS ESE ESE OPC IDN This order can read information about power supply The parameter it returns contains 4 segments divided by comma Quest syntax IDN Parameter None Return parameter lt AARD gt For example ITECH Ltd IT6922A 0123456789AF 1 00 OPC When all orders before this order are executed OPC is 1 for the standard event status register Sending query order will return 1 to output buffer Order syntax OPC Parameter None Quest syntax OPC Return parameter lt NR1 gt PSC This order control if power supply send a query or not when it is reset 1 OR ON When power supply is reset operation event enable register query event enable register and standard event status register are all reset 0 OR OFF The data of status byte register operation event enable register quest event enable register and standard event status enable register is stored in nonvolatile register and is recalled when power supply is 35 reset Order syntax PSC lt bool gt Parameter 0 1 ON OFF Quest syntax PSC Return parameter 0 1 Reference order ESE SRE STAT OPER ENAB STAT QUES ENAB RST This order reset the power supply to default setting CURR CURR STEP CURR TRIG CURR PROT DISP ON OUTP OFF TRIG SOUR BUS VOLT OV VOLT STEP VOLT TRIG VOLT PROT VOLT PROT STAT ON Order syntax RST gt Parameter None SRE lt enabled value gt This order can set the parameter of standard event register
24. Rce CURRent LEVel IMMediate STEP INCRement SOURce CURRent LEVel T RIGgered IMMediate INCRement SOURce CURRent LEVel T RIGgered IMMediate INCRement Voltage control orders SOURce VOLTage LEVel IMMediate AMPLitude SOURce VOLTage LEVel IMMediate AMPLitude SOURce VOLTage LEVel UP IMMediate AMPLitude SOURce VOLTage LEVel DOWN IMMediate AMPLitude SOURce VOLTage LEVel IMMediate STEP INCRement SOURce VOLTage LEVel IMMediate STEP INCRement SOURce VOLTage LEVel T RIGgered AMPLitude 29 SOURce VOLTage LEVel T RIGgered AMPLitude SOURce VOLTage PROTection LEVel SOURce VOLTage PROTection LEVel SOURce VOLTage PROTection STATe SOURce VOLTage PROTection STATe SOURce VOLTage PROTection TRIPed SOURce VOLTage PROTection CLEar SOURce VOLTage LIMIT LEVel SOURce VOLTage LIMIT LEVel Compound control orders SOURce APPLy SOURce APPLy Calibration orders CALibrate SECure STATe CALibrate SECure STATe CALibrate INITital CALibrate SAVe CALibrate VOLTage LEVel CALibrate VOLTagel DATAT CALibrate CURRent LEVel CALibrate CURRent DATA CALibrate DVM LEVel CALibrate DVM DATA CALibrate STRing CALibrate STRing Measure orders MEASure SCALar CURRent DC FETCh CURRent DC MEASure SCALar VOLTage DC FETCh VOL
25. Repeat the steps from 5 to 8 and set the four steps voltage current and delay time separately VVhen screen display NEXTSYES in the fourth step edit process please press V to select NEXT gt NO press to confirm VFD display REPET 1 press number key to or rotary knob to set the repeat times press to confirm VFD display SAVE gt NO press to confirm in this circumstance the list file is not saved but can run for one time or you can press V button to select SAVE FILEO saving the list test file in FILEO FILE9 press to confirm You can recall the file in the follovving utilization If you do not save the list test file VFD will display LIST EDIT if you select to save the test file VFD will display SAVE DONE for three seconds and then display LIST EDITL Press A to select gt LIST STATE item press to confirm VFD display LIST gt OFF press V to select gt LIST gt ON press Ene to confirm Now button will be lit This indicates that list operation function has been opened VFD display gt LIST STATE pressing E button can quit the operation 23 16 Press button to open the output press Ente Trigger to give a trigger signal 17 If you have edited several list files you can select LIST LOAD item to recall the file you need And then press to quit this operation Press button to open the output Now you only need to press GED Trigger to give a trigger signal the list file can be ran 18 In LIST mo
26. Tage DC MEASure SCALar POWer DC FETCh POWer DC MEASure SCALar DVM DC FETCh DVM DC MEASure SCALar STATus List operation orders SOURce LIST FUNCtion SOURce LIST FUNCtion SOURce LIST LOADJ IMMediate SOURce LIST LOADJ IMMediate 30 SOURce LIST VOLTage SOURce LIST VOLTage SOURce LIST CURRent SOURce LIST CURRent SOURce LIST TIMEr SOURCce LIST TIMEr7 SOURce JLIST SAVE SOURce LIST RE Pet SOURce LIST REPet 7 2 SCPI status register IT6900A series power records variable instrument status via three kinds of status register the three kinds of registers are standard event register query status register and status bytes register Status byte register records the information of other status registers The below picture will give you more detailed information 31 Questionable Status Event Register Enable Register ve vu o amar meres a P OVERVOLTAGE 9 10 Output Buffer Status Byte Summary Register Enable Register not used STAT QUES STAT QUES ENAB lt value gt 3 oR STAT QUES ENAB 4 5 fat 6 Standard Event 7 Event Register Enable Register Serial Poll SRE lt value gt Execution Error OT Fe CW DN Command Error ESR ESE lt value gt ESE Operation Com Lucht 0 STB SRE F Query errorae Device Dependent error DDE I EXE no
27. USER S GUIDE Programmable DC Power Supply Model IT6900A Series Model IT6922A IT6932A IT6942A IT6952A IT6953A Copyright 2010 All Rights Reserved Ver1 0 NOV 2010 IT6900A 603 IT6900A Series Programmable DC Power Guppltes 3 SSO CUPINY EE 3 Security regulation RE 3 Safety SVMDOIS et ie deia thence aR eaten 3 Certification and Quality Assurance 3 r el e RE A Chapter Inspection and Installation AA 5 SN Wl Dieter DECH 5 1 2 To Rack Mount the Inetrumenmt A 6 1 3 The size of the power supphy ee eee eeeeeeeeeeeeeneeeeeaeeeeaeeeeeaeeeesaaeeeesaeeseeeeneeseeeeesaeeteas 7 Eege Uo Cho 6 g EE 8 2 1 The front and rear panel description 0 0 0 eee ce eeeeee cence sence eeeaeeeeeeeeeeeeetaeeeeaeeteaeeeteaeeeeaaes 8 2 2 Key INTOCUCTION siisii ainnean nenene ananake naraenia ainainen 9 Pe EA EIR A DOE ooa PEA AAAA A AAR T 10 Khaled eessen 11 S A sPOWSM OM PE CRECIC retat cane teint aint eebe Eegeregie dees 11 e Eu e EE 13 Chapter4 technical spechftcatton cece ee cece eeeeeeeeeeeeeeeaeeeeeeeeeeeeaeeeeeseeeeeeeeeeeeeneenaes 14 4 1 main technical parameters AA 15 4 2 supplementary characteristlC nnncnnennhnne EET TEI EE henna 15 Chapter5 Basic operation eege eege menes ee 16 5 1Local Remot Modes ox va sie Egea ie ge Ei ed Race els 16 52 NOM dE Se da rere bes i aeri aes ir dria ia Erra aeri a EC EA 16 DiS EIERE E deen Gegebenheeten ge 17 54 On Off Operation EE 17 5 5 Setup value Actual ae manteniments 17 5 6 Voltage Current Power
28. adlustment AA 18 5 7 Saving OPO Fem eege 18 is Ei delel lr IT 18 5 OME OPCIONS ES ES SS SS GE ESE REG EEES EEES 18 BLOM UCU SR a ES 24 SAU Kl MOC GE ei ITC III II II UD 24 5 12 Rear Chile le EE 24 Chapter6 Remote Operation Moche 25 d 2 92 Mena Ce etat aeri et telat PAPES A ete AATA RESAN E ARAA aaisan Riard aiani 25 E ALPES sc nnn rene pee Re Pe ar eet et 27 6 3 GPIB Sin 27 Chapter7 Communication pDrotocal 28 TN SOC PU OSI AOS Set co hase a EE EE 28 ESO ESTAS POISE St cise ct xe ceca eeben shat shot eben Zheng Beier Sheeran reene en 31 73 SGPlorderdescriptionimsienstamtmetsiasossteetamtstai atmetstmtmtmasiasosi s 34 IT6900A Series Programmable DC Power Supplies Security Please do not install replacement parts in the instrument or perform any unauthorized modification Please send the instrument to our company s maintenance department for maintenance to ensure its security features Please refer to the manual for specific information warning or precautions to avoid personal injury or equipment damage There is no part that the operator can maintenance If maintenance service is required please contact a trained service personnel Security regulation To prevent electric shock non authorized personnel is strictly not allowed to open the machine This equipment is strictly prohibited for use in life support systems or any other device with security requirements We cannot accept responsibility for any direct or indirect financial
29. ast power off output state If you select off item unit will automatically in off mode when you power on Default setting is OFF item 20 Communication gt COMM Our unit has provided three standard communication interfaces RS232 USB GPIB In this option you can select the communication interface according to your demands The range of GPIB address is 0 30 Besides we have multi baudrate to be chosen in RS232 mode 4800 9600 19200 38400 57600 11 52K Data bit is 8 Check digit have three choices NONE ODD EVEN Before you begin to carry out communication please make sure the configure in our unit agrees with PC configure Key Sound Set gt BEEP ON This item can set the key sound state If in on mode then key sound will be there when you press buttons If in off mode the beeper will not make a sound The default set is in on mode Rotary Knob Set gt KNOB This item is used to set rotary knob state In on mode you can use this rotary knob to set the output value and overturn the menu items In lock mode this knob can t be used The default setting is in on mode Trigger mode gt TRIG Before you running a list file you need a trigger signal Thus you must set the trigger mode firstly in keyboard trigger mode or in external trigger mode In MANU trigger mode press e button can generate a trigger signal In BUS trigger mode you can only through sending orders to trigger The default set is MANU option Group Set MEM GROUP
30. de voltage set and current set button can t be used In LIST STATE item choose LIST gt OFF will enable you to quit list mode 5 10 OVP Function IT6900A series power supply provide OVP function press se button can enable you to set the over voltage protection value Over voltage may caused by internal defect or customer s incorrect operation such as output voltage rising or external voltage too high Once power supply is protected OVP the output will be off immediately and OVP indicator light will be lit the VFD display OVER VOLT Avoid external voltage that across the output terminals exceeding the 120 of rated voltage or it will damage out power supply When power supply in OVP state please check the external factors first after you exclude the external factors press ON OFF button to open output again If in communication state originally you should by sending order OUTP ON order to open output 5 11 Key Lock Press niom Lock button to set the key lock state If keyboard has been locked the indicator light LOCK will display on the VFD screen In addition when key board are lock all butttons can t be used but ON OFF Meter buton shift button Press this button once again will relieve key lock function 5 12 Rear pins function 24 7 output terminals the same with front pannel output terminals S S remote sense pins Disconnect the wires between pins if you want to use remote sense functio
31. der the output value will be restored to the previous output and the upper limit of OVP will be keeped Of course before you sending this order you should enable the output voltage lower than the upper limit of OVP In addition please note that making sure to remove the external power supply before you sending this order Order syntax SOURce VOLTage PROTection CLEar VOLT LIMIT lt volts gt This order is used to set the upper limit of the output voltage Order syntax SOURce VOLTage LIMIT LEVel lt NRf gt parameters MIN MAX unit V Query syntax VOLTage LIMIT Return parameters lt NR2 gt Compound Control Order APPLy lt voltage value gt DEF MIN MAX lt current value gt DEF MIN MAX This order has combined two kinds of orders VOLTage and CURRent When sending this order to unit power supply will output voltage and current according to the current setting of this order Of course the precondition is the setting value is within the setted range lf not then a execution error will occur You can also use DEF MIN or MAX as the setting parameters DEF represents factory setting MIN will enalbe the voltage and current to be 0 MAX will enable the output to be the highest value in the range Order syntax ISOURce JAPPLy lt NRf gt parameters MIN MAX 44 unit V A Query syntax APPLy Return parameters lt NR2 gt Measurement orders MEASure CURRent This order is used to measure and return output current value Order
32. er SOURce This order is used to choose the soure of trigger signal Power supply can receive the signal from front pannel i e by pressing Trigger button Or receive a trigger signal by BUS When you execute order RST the trigger mode should be set in MANUAL Order syntax TRIG SOUR lt mode gt parameters BUS MANUAL Query syntax TRIGger SOURce RST value BUSJMANUAL Output orders OUTPut This order is used to open or close the output of power supply When output is off the voltage and current of power supply is OV 1mA Order syntax OUTP STATe lt bool gt 40 Parameters 0 1 OFF ON Query syntax OUTPut RST value O OFF OUTPut TIMer This order is used to set the state of output timer Order syntax OUTPut TIMer STATe lt bool gt parameters 0 1 OFF ON Query syntax OUTPut TIMer2 OUT Put TIMer DATA This order is used to set output timer s time Order syntax OUTPut TIMer DATA lt NRf gt parameters 0 99999 9 unit S Query syntax OUTPut TIMer DATA72 parameters lt NRf gt Output current orders CURRent lt current value gt MINimum MAXimum UP DOWN DEF This order is used to set the output current Nomatter what the current range you select currently the output current is subject to the newest setting value Besides MIN and MAX can be used as parameters MIN represents OA MAX represents the max value of the current range You may send CURR MIN or CURR MAX orders to quire the minmun and maximum current wthin
33. eration temperature 0to40 Storage temperature 20 to 70 Humidity Max humidity 80 Chapter5 Basic operation This chapter has several subdivisions Local remote mode Voltage setup Current setup on off operation Setup value actual value Voltage current power adjustment Saving operation Trigger operation Menu operation OVP protection function Key lock function DVM measure function 5 1 Local Remote Mode Local button can enable you switch mode from remote to local mode After you power on the power supply unit will default in local mode all the buttons can be used in this mode While in remote mode you can t operate through front panel directly Local and remote mode can be controlled through PC In addition the mode changing will not influence the output parameters 5 2 Voltage Setup You can set voltage within the range of rated voltage value When you press button the button will be lit This indicates that you can set voltage There are three ways to set output voltage through front panel The first way press Se adjust cursor location through Ga I button pressing A and V will enable you to adjust the setting voltage value The second way presse adjust cursor location through Gal button adjust rotary knob Cs to change the setting voltage value The third vvay press button and number rey D to to set voltage value 5 3 Current Setup You can set current within the range of rated cu
34. gher than the setting value then power supply will function in CC mode And the CC indicator light will be lit The output voltage and current value are also influenced by the upper limit of output power Take IT6932A 60V 10A 200W for example suppose you set the max power value to be 200W then when the setting output voltage and current is 25V 10A in fact the unit can only output 25V 8A 5 7 Saving Operation Customer can save some often used parameters in nonvolatile memory You can use the button RecalD Save button or SCPI order SAV RCL to achieve this function Saving parameters include setting voltage setting current Saving method Press D Recall save button and then input the group number you want to save through number key board Press enter button to confirm If you want to recall the saved parameters press button and corresponding group number number1 9 At last press enter button to confirm 5 8 Trigger operation You need to select the trigger mode from the menu before using this function After you edit a list file press Trigger to give a trigger signal During the running process Ente button will be lit all the time 5 9 Menu operation 1 Menu description Press Eset D Menu to enter the menu You will see a optional items on the screen through direction keys and rotary knob to upturn VFD display then the screen will display the following functions Press button will enter corresponding i
35. ile memory 4 800 960 019 200 3 840 057 600 115 200 RS 232 connection cable Use a RS232 cable with DB 9 interface RS 232 serial port can connect with the controller eg PC Do not use blank Modem cable Table 2 2 shows the plug pins If your computer is using a RS 232 interface with DB 25 connector you need a adapter cable with a DB 25 connector at one end and the other side is a DB 9 not blank modem cable 54321 RI 2 987 6 RS 232 plug pins Pin number Description 1 No connection TXD transfer date RXD receive data No connection GND ground No connection CTS clear transfer RTS ready to transfer OJCOI NI OD a amp WwW J P No connection RS 232 Troubleshooting If there is RS 232 connection problem check the following Computer and power supply must configure the same baud rate parity data bits and flow control options Note that the power configuration as a start bit and a stop bit these values are fixed As described before in RS 232 connector you must use the correct interface cable or adapter Note that even if the cable has the right plug the internal wiring may be wrong 26 Interface cable must be connected to the correct serial port on the computer COM1 COM2 etc Communication Settings Before communication you should first make the following parameters of power supply and PC matches Baud Rate 9600 4800 9600 19200 38400 57600
36. ition Value 0 2 Not used 0 Always set to 0 3 QUES 8 One or more bits are set in the questionable status register bits must be enabled in the enable register 4 MAV 16 Data is available in the power supply output buffer 5 ESB 32 One or more bits are set in the standard event register bits must be enabled in the enable register 6 RQS 64 The power supply is requesting service serial poll 7 Not used 0 Always set to 0 7 3 SCPI order description IEEE488 2 common orders CLS This order can clean the register as follows Standard event status register Quest condition register Operation event register Status byte register Error code Order syntax CLS Parameter None 34 ESE This order can set the parameter of standard event enable register Setting parameter can determine which bit value of standard event register is 1 and the byte will enable ESB of status byte register is 1 Order syntax ESE lt NR1 gt Parameter 0 255 Reset value Consult PSC order Example ESE 128 Quest syntax ESE Return parameter lt NR1 gt Reference order ESR2 PSC STB ESR This order can read the value of standard event status register After executing this order standard event status register is reset Bit definition of standard event status register is as the same as the standard event status enable register Quest syntax ESR Parameter None Return parameter lt N
37. le ENABle Return parameter lt NR1 gt Reference order PSC System order SYSTem VERSion This order can query the version of the SCPI order Returned value is a string like YYYY V In which the YYYY is the year of this version V is the version Order syntax SYST VERS Parameter None Return parameter lt NR2 gt Example 1 00 1991 1 SYSTem ERRor This order is used to query the error information of the power supply When the error LED lights on the front panel it tells us that there is one or more hardware or order syntax error happened There are at most 20 groups of error message Send the order once will read one error message from the error queue 1 Error messages follow the FIFO first in first out principle The first error will be returned first when you read all the error tips information in the error queue The ERROR led will turn off When error occur the buzzer of the power supply will beep once 2 If more than 20 errors occurred the last one stored in the queue will be replaced by 350 Meaning too many mistakes If the error messages in the error message queue are not read out the error following will not be saved to the queue If there is no error message when read error information it will return 0 meaning no error 3 If turn off the power supply or send CLS clear status order the error messages in the error queue will be cleared RST order will not clear the er
38. n Then lead a wire from S S pins and connect to the under test objects V V ithe output interface of a four semi digital voltmeter IT6900A series power supply has four semi digital voltmeter This DVM can measure 0 001V to 61 000V voltage Press Meier DVM button can enable the measured value display on the VFD screen Press any key to quit the display of this value Chapter6 Remote Operation Mode IT6900A series power supply three standard communication interface RS232 USB GPIB the user can choose to any one of them to implement a communication with the computer 6 1 RS232 interface There is a DB9 connector at the rear of the power supply when connect to computer you need to connect a cable with COM port on both side active connection you need to set the front panel composite key Va key configuration settings the same as computer configuration settings RS 232 interface can be used to program all of the SCPI orders Note The RS232 settings must match the settings in front panel system information If any change please press set key RS 232 data format RS 232 data is a 10 bit words which has a start bit and a stop bit The start bit and stop bit can t be edited However you can select the parity items with Ceset key on the front panel 25 Parity options are stored in nonvolatile memory Baud Rate The front panel TD button allows the user to select a baud rate which is stored in the non volat
39. nce with the standard voltage used in the region an operating manual a factory calibration report a certificate 3 The power input requirements there are two kinds of working voltage for the power supply 110V and 220V so please pay attention to the working input voltage There is a power cord which matches with your local power in the attachment If that does not match please do not hesitate to contact with our authorized dealer or service department AC input levels select by change the power switch on the rear panel Option Opt 01 220VAC 10 47 to 63 Hz Option Opt 02 110 VAC 10 47 to 63 Hz 1 2 To Rack Mount the Instrument You can mount the power supply in a standard 19 inch rack cabinet using the IT E151 rack mount kit Note Remove the carrying handle and the two plastic ears before rack mounting the instrument To remove the handle grasp the handle by sides and pull outwards and rotate it to a special position to let the arrow on the handle and the arrow on the plastic ears be in opposite directions then pull the handle outward After removing the handle you can use a screwdriver to remove the two plastic ears Side view of rack mounting a single instrument 9306 GG a DOOO O V SEL 9JOOOO HE v SEL To rack mount two instruments side by side order rack mount kit IT E151 you needn t to use the front cover panel 1 3 The size of the power supply 1 IT690
40. nt functions with a short across the power supply s output 1 Turn on the power supply 2 Press nl Key to ensure that the output is disabled At the same time the OFF status mark is on the VFD 3 Connect a short across and output terminals with an insulated test lead use a wire sufficient to handle the maximum current Adjust the voltage value to 1V Turn on the power output Press key to ensure the output is enabled at the same time there is CC status sign on the VFD Turn on METER function key Press METER key to light it and the METER status sign is on the VFD Adjust the current value Set some different current values check whether the voltage value on VFD EE 2 is near Ov and the current on it is close to the value you set 8 Make sure that the current can be adjusted from 0 to full rated value 9 Turn off the output of the power supply and remove the short wire Chapter4 technical specification This chapter will introduce the main technical parameters of IT6900A such as rated voltage current povver and so on Besides we will introduce the working environment and storage temperature 4 1 main technical parameters Parameters IT6922A IT6932A IT6942A IT6952A IT6953A voltage 0 60V 0 60V 0 60V 0 60V 0 150V Rated values current 0 5A 0 10A 0 15A 0 25A 0 10A 0 C 40 power 100W 200W 360W 600W 600W Load regulation voltage
41. ple RCL 3 Reference order SAV STATus QUEStionable EVENt This order can read the parameter from quest event register the power supply will return a decimal number which is corresponding to the binary weighted sum of each bit of the register these bits have been latched After executing quest event register is reset Quest syntax STATus QUEStionable EVENt Parameter None Return parameter lt NR1 gt Reference order STATus QUEStionable ENABle STATus QUEStionable CONDition This order can be used to read the value of query condition register and to get the status of the power if it is CC or CV The power supply will return a decimal number corresponding to the binary weighted sum of each bit of the register These bits are not latched If 0 is returned then the output status of the power is OFF or uncertain If 1 is returned then the status is CC mode if 2 is returned then the status is CV If 3 is returned then there is error occurred Quest syntax STATus QUEStionable CONDition Parameter None Return parameter lt NR1 gt STATus QUEStionable ENABle lt enabled value gt This order can set the parameter of quest event enable register The power supply 37 will return a decimal number which is the binary weighted sum of the enable register Order syntax STATus QUEStionable ENABle lt NRf gt Parameter 0 255 Reset value Consult PSC order Example STATus QUEStionable ENABle 16 Quest syntax STATus QUEStionab
42. ror messages in the error queue SYSTem REMote This order is used to set the power supply to remote control mode through the RS232 interface Except for the Local key on the front panel other keys are locked and can t be used Send or receive orders without first sending the order to configure the remote control may cause unpredictable results 38 Order syntax SYST REM Parameter None Quest syntax None SYSTem LOCal This order is used to set the power supply to panel control mode through the RS232 interface After execute this order all the buttons on the front panel can be used Order syntax SYST LOC Parameter None Quest syntax None SYSTem RWLock This order is used to set the power supply to remote control mode through the RS232 interface and LOCAL is not available too Executing this order will set the power supply to remote control mode the same result as order SYST REM function the only difference is this order will lock all the buttons on the front panel including LOCAL button Order syntax SYST RWL Parameter None SYSTem BEEPer This order is used to test the beeper after execute this order the power supply will issue a beep sound Order syntax SYSTem BEEPer IMMediate Example SYST BEEP SYSTem COMMunicate GPIB RDEVice ADDRess This order is used to set the GPIB communication address Order Syntax SYSTem COMMunicate GPIB RDEVice ADDRess lt NR1 gt Parameter 0 30 Quest syntax SYSTem COMMunicate
43. rrent value When you press button the button will be lit This indicates that you can set current There are three ways to set output current through front panel The first way press FS adjust cursor location through Ga I button push A and V will enable you to adjust the setting current value The second way press Cl set adjust cursor location through Gal bution adjust rotary knob Cs to change the setting current value The third vvay press button and number Key to to set current value 5 4 On Off Operation button is used to control the output state of power supply When button is lit this indicates the output is in on mode When output is open the working state indicator light CV CC will be lit Note make sure you have connected power supply well then press button 5 5 Setup value Actual value You can switch the display between setting value and actual value by pressing MeteD button When this button is lit screen displays actual output value and the indicator light meter will be lit on the VFD board In other words when the button is not lit the front panel displays setting value 5 6 Voltage Current Power adjustment The output current value is determined by output voltage of power supply and electronic load s resistance Only when the actual current value is lower than the setting current value can power supply work in CV mode and the will CV indicator light be lit If output current is hi
44. s and provide multi purpose solutions Convenient bench top features e High visibility vacuum fluorescent display VFD e Digital keyboard operation e High accuracy and high resolution e Low ripple and low noise e Intelligent fan control energy conservation noise reduction e Standard communication interface RS232 USB GPIB e Can be monitored by computer software e Output voltage and current values accordance with procedure e Can use the knob to adjust the voltage and current e Can adjust the numbers steps using the cursor e Rich SCPI orders to facilitate the formation of intelligent test platform e Can set the output timer 0 1 99999 9 s V 60 40 20 IT6922A output curve figure Chapter1 Inspection and Installation Power supply is a high level safety equipment there is a protected ground terminal Before Installation or operation please read the safety signs and instructions in this manual 1 1 Inspection After received the power supply follow these steps to check it 1 Check for damage in the equipment during transport If it is the frame panel damaged or abnormal working ext Please contact immediately with our authorized dealer or service department Do not return the instrument before positive response has not been got 2 Check the attachment Make sure you receive the power and the following components at the same time if any missing please contact your nearest dealer a power cord in accorda
45. sh button to confirm At last please press direction key to select gt Trig MANUAL and push button to confirm You can make the output change order by editing every step value of list operation The parameters you need to edit includes single step voltage single step current single step delay time and whether to go on the next step Besides you also need to set the repeat times and save list sequence file After you finish the editing process at this time if you receive a trigger signal povver supply will begin to work according to the sequence steps you ve edited Now we take five steps for an example Operation steps 1 Press Tt Menu button to enter the menu 2 VFD display MAN VOLT press V to select gt LIST SET press to confirm 3 VFD display gt LIST STATE press V to select gt LIST EDIT press to confirm 4 VFD display gt TIME SEC pressCEnter to confirm go to the next step you 22 5 6 7 8 9 10 12 13 14 15 can also through V button to select gt TIME MIN time unit press to confirm VFD display gt VSET 0 000 press number key to or through rotary knob to set voltage after that press to confirm VFD display ISET 0 0000 press number key to or rotary knob to set the single step current press to confirm VFD display SET 0 1 press number key to Dor rotary knob to set single step delay time press to confirm VFD display NEXT gt YES press to confirm
46. te maintenance to the products by customer Customers use their own software or interface Unauthorized modification or misuse Operate this product not in the specified environment or at the wrong place configuration and maintenance Damage from Customer self installation of circuit or defects due to customers use their products Product model or serial number of the fuselage has been altered deleted removed or made illegible Damage caused by accidents including but not limited to lightning water fire abuse or neglect Notice If the contents of this manual is subject to change we will not notice additionally Introduction IT6900A series power supplies are high performance single output programmable DC power supplied with communication interface This series of programmable DC power supply can output the maximum voltage or current with a fixed power for customers Take IT6922A 60V 5A 100W for example when you select 60V for the output voltage the output power of IT6922A is 100W so in this case the maximum output current is 100VV 60V 1 66A When you select 20V for the output voltage the maximum output current 100W 20V 5A but when the output voltage is down to 10V due to IT6922A maximum current is 5A so in this case the maximum output current is 5A IT6900A series power comes with a standard communication interface RS232 USB GPIB both desktop and system based features can be designed and tested according to your need
47. tems Press button will return to previous menu MAX VOLT Set the max output voltage SYST SET P MEN Reset Power is restored to factory setting RESET Keep Set the power on state as the last power off state OFF Enable the power on output state to be off mode P OUT OFF Set the power on output state to be the last Keep power off output state GPIB ADDR Address can be set within 0 30 4800 9600 BAUD 19200 38400 57600 1152 COMM GPIB RS232 5200 NONE 8BIT NONE 8BIT EVEN 8BIT ODD 8BIT SIGNAL MODE MUX ADDR Address can be set within 0 30 USB FF BEEP ON O Close the key sound ON Open the key sound LOCK Lock the rotary knob function KNOB ON 7 ee ON Unlock the rotary knob function MAN i TRIG MANUAL U Local keyboard trigger BUS External trigger MEM GROUP1 IGRP1 8 Save and recall operation OFF Close the timer function TIMER SET ON Open the timer operation the time can be set within 0 1 99999 9s RESET NO keep the original setting YES restore the factory setting EXIT Quit the menu setting LIST SET LIST STATE OFF Close list test function ON Open list test function LIST LOAD Recall the saved list file FILEO FILE9 LIST EDIT TIME SEC second SEC MIN minute VSET Setup the single step voltage ISET Setup the single step current 19
48. xt No constant current mode 8 CUSB GPIB light when the ES Adra address match or RS232 received order e E The power supply is in Meter Meter on state Rmt remote mode Shift Use compound keys Error Pae PONOT SUPPY Has arar or fault OVP OVP function state on Prot OVP OTP Protection OCP No Lock Key operation is locked by Password Chapter 3 power on check This chapter will introduce the procedure of power on check including pre check and output check to make sure the power supply can power on and work normally on the original state 3 1 power on Pre check Power on pre check includes two parts power on the supply and system self check 1 Power on the supply If Power Supply Does Not Turn On Use the following steps to help solve problems you might encounter when turning on the instrument If you need more help refer to chapter 6 for instructions on returning the instrument to the supplier for service 1 Verify that there is AC power to the power supply First verify that the power cord is firmly plugged into the power receptacle on the rear panel of the power supply You should also make sure that the power source you plugged the power supply into is energized Then verify that the power supply is turned on 2 Verify the power line voltage setting The line voltage is set to the proper value for your country 110VAC or 220VAC when the power supply is shipped from the
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