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Chapter II Functions & Features

ARRAY

If the load goes wrong, the input will be shut down with beeps, and the LCD will display the

detected conditions and the load will enter into the latched protection status. And the

corresponding state bit in the register will be set. Except some specific operations, the load will

not respond to other commands. For example: If an overtemperature condition has been detected,

the input will be turned off with beeps. And the OT will be shown in the lower right corner of the

LCD and the load will have no response to other operation commands.

2.12.1 Clearing Latched Function

When the load enters the latched protection state, it will not respond to any other commands. It wil

return to normal operation only after clearing the latched protection via compound keys

and

, or via the remote command: INPut:PROTection:CLEar. Of course the condition that

cause the latch protection must be cleared, otherwise it will cause the latched protection again

immediately.

In addition, when the software current protection function is enabled, if the overcurrent time does

not exceed the set protection time, the load will display PT to indicate, but the input will not be

turned off. At this time, user can reset the overcurrent time via compound keys

and

or via the remote command: INPut:PROTection:CLEar.

2.12.2 Overvoltage

The overvoltage alarm level is set at a predetermined voltage, which cannot be changed by the

user. When the voltage exceeds this predetermined voltage, the overvoltage protection will be

enabled, and the input is turned off with OV display. Meantime, the OV and VF status register bits

are set and remain until they are reset and the overvoltage condition is removed.

2.12.3 Overcurrent

The load allows the user to define a current protection limit. When the defined current limit is

exceeded, the input will not be turned off immediately but the overcurrent timer will start to time,

and the display will show PT to indicate the protection status. When the specified delay time is

Summary of Contents for 3750A

Page 1: ...Contents USER S MANUAL 375X SERIES ELECTRONIC LOAD ...

Page 2: ...1 6 7 Save Menu 19 1 6 7 1 Application Save Menu 19 1 6 7 2 Recall Save Menu 20 1 7 Remote Programming 20 Chapter II Functions and Features 21 2 1 Local Remote Control 21 2 2 Main Functions 21 2 3 Basic Test Functions 22 2 3 1 CC Test 22 2 3 1 1 Current Setting Range 23 2 3 1 2 Immediate Current Level 23 2 3 1 3 Triggered Current Level 23 2 3 1 4 Transient Current Vevel 24 2 3 1 5 Software Current...

Page 3: ...ion in CV Mode 41 2 7 4 Current Rising Rate 42 2 7 5 Current Falling Rate 42 2 8 Measurement Function 43 2 9 Saving and Recalling 43 2 10 Reading Remote Program Errors 45 2 11 Status Report 45 2 12 Protection and Alarm Function 45 2 12 1 Clearing Latched Protection 46 2 12 2 Overvoltage 46 2 12 3 Overcurrent 46 2 12 4 Overpower 47 2 12 5 Overtemperature 47 2 12 6 Reverse Polarity 48 Chapter III In...

Page 4: ...List 83 4 9 Saving and Recalling 84 4 10 Checking and Clearing Protection Setting 86 4 11 Trigger Operation 87 4 12 Main Menu 87 4 12 1 Buzzer 88 4 12 2 Encoder 88 4 12 3 Trigger 89 4 12 4 Calibration 89 4 12 5 Information 89 4 12 6 Safety Code 90 4 12 7 Date 91 4 12 8 Time 92 4 12 9 Language 92 4 12 10 System Default 93 Chapter V Remote Programming Operation 94 5 1 Communication Interface 94 5 1 ...

Page 5: ...ent Protection 99 5 6 CC Mode Example 99 5 7 CV Mode Example 100 5 8 CR Mode Example 100 5 9 Continuous Transient Operation Example 100 5 10 Pulsed Transient Operation Example 101 Specifications 102 Frame Diagram 110 Declarations 113 ...

Page 6: ...med for CAT I II and IV Measure Categories EN6100 1 2010 specifies the measurement categories and their requirements as follows The 375XA falls under category II Measurement category IV is measurement performed at the source of low voltage installation Measurement category III is for measurement performed in the building installation Measurement category II is for measurement performed on the circ...

Page 7: ... Pollution degree II Normally only non conductive pollution occurs Occasionally however a temporary conductivity caused by condensation must be expected Pollution degree III Conductive pollution occurs or dry non conductive pollution occurs which becomes conductive due to condensation which is expected In such conditions equipment is normally protected against exposure to direct sunlight precipita...

Page 8: ...and CP twelve basic working modes CCL CCH CVL CVH CRL CRH CP CCL CV CCH CV CRL CV CRH CV CP CV The 16 bit D A converters and 24 bit A D converters incorporated provide the equipment with greatly enhanced setting and measurement resolution The D A conversion rate can reach 500 KHz and the high speed performance is overall increased Minimum operating voltage is less than 1 8V at the load s full rate...

Page 9: ...ting SCPI and LabView and providing necessary PC software 1 2 Front Panel 1 Air Inlet Air inlet of the cooling air dust 2 LCD display To display the state test value and setting parameter of the instrument 3 Operation mode key To switch the operation mode of the instrument 4 Power Power ON OFF 5 Handle To handle the instrument 6 Number pad function keys To enter the numbers and the functions 7 Dir...

Page 10: ...cket fuse 7 Air outlet 8 Ground terminal to connect the earth during rack system installation 1 4 Keypad Function There are four types of keys function keys number keys alternative function keys and direction keys on the keypad On the alternative function compound key the black fond is the first function and the blue fond is the alternative function For example CV is the first function of key and ...

Page 11: ... Introduction ARRAY 6 Table 1 1 Key Explanation Number 0 Number 1 Number 2 Number 3 Number 4 Number 5 Number 6 Number 7 Number 8 Number 9 Dot Clear Epitope shift key Save key Recall key Input ON OFF key Confirmation key ...

Page 12: ...be on when the input being on Yellow light be on when the input being standby Left key Right key Upper key Down key Delete key Local key Error code display key I O port configuration key CC mode selection key CV mode selection key CR mode selection key CP mode selection key Alternative function shift key ...

Page 13: ...play the current voltage current and power value 4 Operation State To display the current operation mode and the input state 5 Current setting Value To display the current setting value 6 Soft K ey To indicate the function of the key below the screen Description of the Main Menu 1 6 1 Main Menu List Press dynamic key to enter the main menu as shown in the following diagram ...

Page 14: ...Calibration Methods Information To display the factory setting Security Code To set the security code for the instrument to avoid the error operation of the Calibration menu Date To adjust the current date of the system Time To adjust the current time of the system Language To swift the current language of the system Default Factory Value The current system can be returned to the default factory v...

Page 15: ...8400 57600 115200 Parity Bit Non Parity Even Parity Odd Parity Data Bit 8 Bit 9 Bit Stop Bit 1 Bit 2 Bit USB Interface USB GPIB Interface GPIB Address Address Value 1 6 3 Transient Operation Menu In basic mode press dynamic key to enter the corresponding transient operation menu The transient operation menu is as follows ...

Page 16: ... HighTime Time for transient high level 0 6s RiseTime Time for transient rising edge 0 01s FallTime Time for transient falling edge 0 01s Mode Continuous Cont Pulse Puls Toggle Togg Cont Notes Transient operation may be used in CC CV CR and CP modes 1 6 4 List Operation Menu In basic mode press dynamic key to enter the corresponding list operation menu The list operation menu is as follows ...

Page 17: ...ess this dynamic key to return to the main menu key Press this key to switch between CCL and CCH key Press this key to enter the transient operation key Press this key to enter list data edit mode In the list operation menu Select the function by or key and select the data edition or data modification function by knob or Then press dynamic key to enter the list data edition menu as follows ...

Page 18: ...nt of current programmed Regardless of the voltage the current will stay the same For more details on CC Mode please refer to Page 52 Voltage Value To display the current input terminal voltage Power Value To display the current power value Current Value To display the current value Mode CCH indicates constant current high range CCL indicates constant current low range ...

Page 19: ...Falling Rate To control the current falling rate when starting key Press this dynamic key to return to the main menu key Press this key to switch between CCL and CCH key Press this key to enter the transient operation key Press this key to enter list data edit mode 1 6 5 2 CR Mode Menu Description In Constant Resistance Mode the load units will maintain a constant resistive load by varying the cur...

Page 20: ...t enabled Res Limit To limit the minimum resistance level at the mode RiseRate To control the current rising rate when starting FallRate To control the current falling rate when starting key Press this dynamic key to return to the main menu key Press this key to switch between CRL and CRH key Press this key to enter the transient operation key Press this key to enter list operation 1 6 5 3 CV Mode...

Page 21: ...Start To set the start voltage of the load 0 indicates the function being not enabled Volt Limit To limit the maximum voltage level at the mode RiseRate To control the voltage rising rate when starting FallRate To control the voltage falling rate when stopping key Press this dynamic key to return to the main menu key Press this key to switch between CRL and CRH key Press this key to enter the tran...

Page 22: ...n shutdown or switch mode Para Set To set the constant power value unit W Start Voltage To set the start voltage of the load 0 indicates the function being not enabled Pow Limit To limit the minimum power level at the mode RiseRate To control the current rising rate when starting FallRate To control the current falling rate when stopping key Press this dynamic key to return to the main menu key No...

Page 23: ...tate ON OFF Run Time To display the time the load being ON reset when shutdown or switch mode Para Set To set the constant current value unit A Volt Start To set the start voltage of the load 0 indicates the function being not enabled Curr Limit To limit the maximum Current level at the mode RiseRate To control the current rising rate when starting FallRate To control the current falling rate when...

Page 24: ...tection state The above diagram is the display of the reverse voltage protection The load has the following alarm functions over current OC over voltage OV over power OP over temperature OT reverse voltage RV And the load has the following protection functions over current OC over power OP over temperature OT 1 6 7 Save Menu 1 6 7 1 Application Save Menu ...

Page 25: ...osition 0 9 totally 10 key Press this dynamic key to return to the main menu key Press this dynamic key to delete the data of the selected position 1 7 Remote Programming The commands are sent to the Eload via remote interface RS232 GPIB or USB decoded by the processor and then executed If there is any error to the commands the processor can detect the wrong command and the error type and can main...

Page 26: ... will be turned in remote control status Under remote control status all the operations of the keypads and knob except key are invalid All operations on the load are controlled by remote controller After receiving the return commands SYSTem LOCal the load will return to local control status and the on the LCD will disappear In remote control status you can retun the load to local control status vi...

Page 27: ...matically to avoid the potential impact of current The set value of the load will be effective immediately when the load is turned on If the input set value exceeds the allowed range it will be automatically limited at the maximum value or the minimum value 2 3 1 CC Test Constant current mode have two ranges the high range CCH and the low range CCL The high range provides wider test range while th...

Page 28: ...y Also of note is that the current set level may change with the current set mode and the changed value is the current value in current mode For example the original setting is CCH 150 000A When the load is switched from CCH to CCL the current set value will become the present current value 1A in CCL mode 2 3 1 2 Immediate Current Level The immediate current level is the current set value in CC mo...

Page 29: ...amming Guide 2 3 1 4 Transient Current Level In transient current operation mode the load can continuously toggle between the two levels the transient level and the immediate level The transient current level can be set in the transient operation menu or via the remote command CURRent TLEVel NRf 2 3 1 5 Software Cureent Level The load allows the user to set a protection current level the range is ...

Page 30: ...mote commands MODE CVL CVH VOLTage NRf Fig 2 2 CV Mode 2 3 2 1 Voltage Setting Range The setting ranges of the voltage for the load are listed as follows Model 375XA Voltage CVH 0 240V CVL 0 24V 2 3 2 2 Immediate Voltage Level The immediate voltage level is the voltage set value in CV mode which can be set in parameter set menu in voltage mode or can be set via remote command VOLTage NRf In CV mod...

Page 31: ...peration conditions which will be described in details in ARRAY 375XA Electronic Load SCPI Programming Guide 2 3 2 4 Transient Voltage Level In transient voltage operation mode the load can continuously toggle between the two levels the transient voltage level and the immediate voltage level The transient current level can be set in the transient operation menu or via the remote command VOLTage TL...

Page 32: ... level may change with the voltage set mode to be suitable for the new range For example the original setting is CRH 10 000Ω When the load is switched from CRH to CRL the voltage set value will become the minimum voltage value 0 0000Ωin CRL mode 2 3 3 2 Immediate Resistance Level The immediate resistance level is the resistance set value in CR mode which can be set in parameter set menu in resista...

Page 33: ...details in ARRAY 375XA Electronic Load SCPI Programming Guide 2 3 3 4 Transient Resistance Level In transient resistance operation mode the load can continuously toggle between the two levels the transient resistance level and the immediate resistance level The transient resistance level can be set in the transient operation menu or via the remote command RESistance TLEVel NRf 2 3 4 CP Test The co...

Page 34: ...directly be modified via or knob 2 3 4 3 Triggered Power Level The triggered power level is the preset power value in the load which will become the immediate power level automatically when a trigger is received In CP mode if the input of the load is ON the input power value will be updated immediately when a trigger occurs If it is not in CP mode the level will not affect the load until the CP mo...

Page 35: ...ways enter the voltage at the limit of the voltage If the input voltage is less than the limit voltage no matter how the input voltage changes the input current of the Eload will be always at the setting current 2 3 6 CR CV Test When CR CV mode is enabled if the input voltage is more than the limit voltage no matter how the input current is changed the Eload will always enter the voltage at the li...

Page 36: ...e setting power 2 4 Transient Operation In transient operation mode the load can continuously toggle between the two levels the transient high level LevelH and the transient low level LevelL which can be applied to test the dynamic features of the power source The transient operation can be executed in CC CV CR and CP mode and there are three operation statuses Continuous Pulse and Toggle Please m...

Page 37: ... considerate The improper parameter setting may cause the shut down of the input and thus interrupt the transient operation 2 4 1 Continuous Transient Operation In continuous transient operation the load periodically toggles between the high low levels This operation is not affected via the trigger signal The relevant parameters such as transient low level LevelL transient high level LevelH low le...

Page 38: ...ient current low level to 5A CURR TLEVel 10 To set the transient current high level to 10A TRAN LTIM 0 0005 To set the transient low level time to 0 00050s TRAN HTIM 0 0005 To set the transient high level time to 0 00050s TRAN RTIM 0 0002 To set the time for transient rising edge to 0 00020s TRAN FTIM 0 0002 To set the time for transient falling edge to 0 00020s TRAN MODE CONT To select continuous...

Page 39: ...e command SYSTem STATe TRANsient enter the transient operation mode CURRent NRf transient low level CURRent TLEVel NRf transient high level VOLTage NRf voltage at transient low level VOLTage TLEVel NRf voltage at transient high level RESistance NRf resistance at transient low level RESistance TLEVel NRf time for transient low level TRANsient HTIMe NRf time for transient high level TRANsient RTIMe ...

Page 40: ...ATe TRANsient To enter the transient operation CURR 5 To set the transient current low level to 5A CURR TLEVel 10 To set the transient current high level to 10A TRAN HTIM 0 0005 To s et t he t ransient hi gh l evel t ime t o 500us TRAN RTIM 0 0001 To s et t he t ime f or t ransient r ising e dge t o 100 us TRAN FTIM 0 0002 To s et t he t ime f or t ransient f alling e dge t o 10 0us TRAN MODE PULS...

Page 41: ... set through transient operation menu or via the followed remote command CURRent NRf To set the transient current low level CURRent TLEVel NRf To set the transient current high level VOLTage NRf To set the transient voltage low level VOLTage TLEVel NRf To set the transient voltage high level RESistance NRf To set the transient resistance low level RESistance TLEVel NRf To set the transient resista...

Page 42: ...or transient rising edge to 100us TRAN FTIM 0 0002 To set the time for transient falling edge to 200us TRAN MODE TOGG To select toggled operation mode INP ON To turn on the input INIT The initial operation before trigger Get the trigger by receiving an external trigger signal Figure 2 8 shows the current waveform of the load before and after being triggered After the input of the load is ON the lo...

Page 43: ...ined connection expanding the capacity of the list operation and implementing more complicated test task The load can store 10 lists which can contain 50 steps at most The associated parameters of the list operation can be edited and set through list operation menu or via remote command The load provides convenient list editing function When the user is inputting or editing the sequence step it is...

Page 44: ...ediately if the input of the load is on For other modes the preset levels will not be effective at the input terminal until the corresponding mode is active Triggering a transient pulse In pulse transient operation the trigger will generate a transient pulse in accordance with the present transient parameters Triggering a transient toggle In toggle transient operation the trigger will make the loa...

Page 45: ... will be ignored 2 7 Input Control 2 7 1 ON OFF of ELoad Input The input of the load can be turned on off via key or via the remote command INPut ON OFF If the load s input is in OFF state press key to turn on the input and the yellow indicator turns to green and the LCD displays ON If the load s input is in ON state press key to turn off the input and the green indicator turns to yellow Turning o...

Page 46: ...int is 0 the function is disabled Via setting the Volt Start Point and the Volt Start Latch the input of the load can be turned on off automatically which greatly simplifies the test operation The Volt Start Point can be set in main menu or via remote command VOLTage STARt NRf Fig 2 11 Von Point 2 7 3 Current Limit Function in CV Mode The current limit function is to limit the maximum set current ...

Page 47: ...1A us and the current set level is 20A then the current rising rate diagram is shown as in Figure 2 14 when the input is turned on Fig 2 14 Current Rising Rate 2 7 5 Current Falling Rate Curr Fall Rate is to set the current falling rate in CC mode It can be set in the main menu or via the remote command CURRent SLEWrate NEGative NRf If the current falling rate is 0 1A us and the current set level ...

Page 48: ...tly or be read via the remote commands MEASure VOLTage MEASure CURRent MEASure RESistance MEASure POWer 2 9 Saving and Recalling The load has EEPROM memory which can be used to save various parameters such as modes input status current voltage resistance transient settings protection levels etc The 375XA electronic load can save 10 groups of parameters All parameters relevant to saving and recalli...

Page 49: ...evel 2000Ω Power level Immediate Power Level 0W Transient Operation Transient Test Off Transient Mode Transient Mode Continuous Transient Htime Time for Transient High Level 0 00001s Transient Ltime Time for Transient Low Level 0 00001s Transient Rtime Time for Transient Rising Edge 0 00001s Transient Ftime Time for Transient Falling Edge 0 00001s Trigger Source Trigger Source External Latch Volta...

Page 50: ...he error messages exceed 20 the lass error in the error queue will be replaced with 350 Too many errors At this time the load will not save any additional error message unless the error messages are read or deleted Once the error message is read it will be deleted from the error queue 2 11 Status Report The load has a status reporting register from which various status conditions of the load can b...

Page 51: ...n must be cleared otherwise it will cause the latched protection again immediately In addition when the software current protection function is enabled if the overcurrent time does not exceed the set protection time the load will display PT to indicate but the input will not be turned off At this time user can reset the overcurrent time via compound keys and or via the remote command INPut PROTect...

Page 52: ...llowed range and send the overpower alarm Meantime the load will compute the present actual power No matter the hardware power limit circuit is enabled or the software test and compute when the overpower time exceeds 10S the overpower protection will be triggered When the overpower protection is enabled the display shows OP and the buzzer sends alarm Meantime the OP and PS status register bits are...

Page 53: ...oltage lines are connected with wrong polarity the reverse polarity alarm function will be triggered The input of the load will be turned off with RV display Meantime the RV and VF status register bits are set and remain until they are reset and the reverse polarity condition is removed ...

Page 54: ...CD ROM User s manual Programming Manual 1 7 Calibration Report 1 3 2 Environment Installation Location The load can run at its full power within the temperature range of 0 C to 40 C and at a decreased power from 40 C to 50 C otherwise the overtemperature protection will be caused Place the load in a location with good ventilation and keep a distance from the electromagnetic interference Do not pla...

Page 55: ...power on self test the error messages will be displayed The error messages are as shown in the followings Error Code Error Explanation 601 LCD self test error 603 System ADC test failed 607 Rundown too noisy 608 Keypad self test error 609 EEPROM checksum failed 630 Temperature test failed If there is no error being detected it will enter CCL mode interface as default and the input of the load is O...

Page 56: ...terminal Input to connect the being tested components 5 Voltage test terminal Remote sense the connecting port for remote test 6 AC input socket fuse holder the voltage toggle key 7 Earthing terminal to connect the system to the earth in rack mounting 1 AC Power Socket Fuse Holder AC power cable type needs to meet the local standard of us Fuse Specifications 250V T1A Voltage toggle key can select ...

Page 57: ...unnecessary to modify the parameter settings or change the hardware wiring in remote voltage test 4 Communication Interfaces RS 232 interface The load provides an RS 232 interface which is a standard DB9 pin connector and uses the DTR and DSR signals for flow control The RS 232 Connector Pins is as below Pin Input Output Description 1 No connection 2 Input RXD receive data 3 Output TXD transmit da...

Page 58: ...t be used by other devices on the BUS The factory default address of the load is set to 05 USB interface User needs to install the corresponding software in PC to communicate with the load 5 Earthing Terminal Connect the system to the earth in rack mounting 3 5 Connection on the Front Panel The connection terminals of 375XA electronic load on the front panel include the external trigger input term...

Page 59: ... Procedures 1 Turn off the power 2 Turn off the DUT power 3 Connect the load wires to the input terminal Connect the positive terminal on the load module to the high potential output of the DUT Connect the negative terminal on the load module to the low potential output of the DUT Wiring Wire Gauge AWG Before connecting the unit to the power source the wire gauge must be taken into account The loa...

Page 60: ... 05232 5 20864 41 13 1 8288 6 56984 35 14 1 62814 8 282 32 Load Line Inductance When using 375XA voltage drop and voltage generated due to load line inductance and current change must be taken into consideration Extreme changes in voltage may exceed the minimum or maximum voltage limits which may damage the 375XA load To determine the voltage generated the following equation can be used E L I T E ...

Page 61: ...wires together Current change can be limited by limiting the slew rate or response speed when switching in CR and CC mode Load Wire Connections The input terminal of the load is on the rear panel Strictly follow the procedure below for all the load connections to ensure the safety of the personal and the instrument Ensure the polarity is correct before proceeding with any connection Ensure the max...

Page 62: ...r supply The load will switch to the remote detecting state after the connection Remote sense can be used to help compensate for long cable length The longer the cable the higher the potential resistance and inductance therefore a short cable is best For large inductance wire twist the positive and the negative load wires together can help to reduce the induced inductance or use Vsense terminal to...

Page 63: ...Chapter III Installation 59 ARRAY ...

Page 64: ...re invalid except When the load receives a remote command SYSTem REMote via RS232 USB or GPIB the remote control goes into effect and the REM annunciator on the right upper corner turns on In remote control status all operations of the load is controlled via the remote control After receiving the return command SYSTem LOCal the load will return to local control and the REM annunciator will turns o...

Page 65: ...connecting the power supply and the electronic load press the key and the key to clear the RV protection status or restart the load The details will be described in Clearing Protection Settings as below 4 4 ON OFF of the Eload Input The load can be turned on and off by pressing key The key will be green when the load is ON and then key will be orange when the load is OFF 4 5 Basic Operation The op...

Page 66: ...mands of the above procedures should be as follows MODE CCH Set the mode CURR 80 Set the current level INP ON Turn on the load Example 2 In CCH mode set the current level to 16A the current rising rate to 0 1A us the current falling rate to 0 5A us the VON voltage to 10V and the current limit level 25A Turn on the load The procedures are shown as below Step 1 Switch to parameter setting menu via a...

Page 67: ... the number keypad press key to confirm Step 9 Switch to current falling rate option via and keys Step 10 Move the cursor to the digit position via the key then enter number 0 via the knob or the number keypad move the cursor to the tenth position via the key then enter number 5 via the knob or the number keypad press key to confirm Step 11 Press key to open the load Notes The knob changes the set...

Page 68: ...ommands of the above procedures should be as follows MODE CVL Set the mode CURR 50 Set the voltage level INP ON Turn on the load Example 2 In CVH mode set the voltage level to 60V the Volt Start to 20V the voltage limit to 100V the voltage rising rate 20V us and the voltage falling rate 24V us Turn on the load The procedures are shown as below Step 1 Switch to parameter setting menu via and keys S...

Page 69: ...rsor to the digit position via the key then enter number 0 via the knob or the number keypad press key to confirm Step 9 Switch to voltage falling rate option via and keys Step 10 Move the cursor to the ten position via the key then enter number 2 via the knob or the number keypad move the cursor to the digit position via the key then enter number 4 via the knob or the number keypad press key to c...

Page 70: ...rresponding SCPI commands of the above procedures should be as follows MODE CVL Set the mode VOLT 10 Set the voltage level INP ON Open the load 4 5 3 CR Mode CR mode has two ranges the high range CRH and the low range CRL Example 1 Take 3751A as an example in CV mode set the load as CRL mode the resistance level is 1 5Ω Turn on the load The procedures are shown as below Step 1 Press key to enter i...

Page 71: ... move the cursor to the digit position via the key then enter number 0 via the knob or the number keypad then press key to confirm Step 5 Switch to resistance limit option via and keys Step 6 Move the cursor to the ten position via the key then enter number 8 via the knob or the number keypad move the cursor to the digit position via the key then enter number 0 via the knob or the number keypad pr...

Page 72: ...rent rising rate 0 5A us CURR SLEW NEG 0 2 Set current falling rate 0 2A us VOLT STAR 15 Set VON voltage 15V RES LIM 80KR Set resistance limit 80KΩ INP ON Open the load Notes In CRH or CRL status the green or the green will be displayed at the lower right corner 4 5 4 CP Mode Example 1 Take 3751A as an example in CRL mode set the load to CP mode the power level is 1000W Turn on the load The proced...

Page 73: ...Switch to VON voltage option via and keys Step 5 Move the cursor to the ten position via the key then enter number 2 via the knob or the number keypad move the cursor to the digit position via the key then enter number 0 via the knob or the number keypad then press key to confirm Step 6 Switch to current limit option via and keys Step 7 Move the cursor to the ten position via the key then enter nu...

Page 74: ...CPI commands of the above procedures should be as follows MODE CP Set the mode POW 1000 Set the power level CURR SLEW POS 10 Set current rising rate 10A us CURR SLEW NEG 6 Set current falling rate 6A us VOLT STAR 20 Set VON voltage 20V POW LIM 1200 Set power limit level 1200W INP ON Open the load 4 6 CV Mode 4 6 1 CC CV Mode Example Take 3751A as an example in CCH mode set the load to CCH mode the...

Page 75: ...2 CR CV Mode Example 1 Take 3751A as an example in CRL mode set the resistance level to 1 5Ω the voltage limit to 20V Turn on the load The procedures are shown as belows Step 1 Switch to mode by pressing and key simultaneously Step 2 Switch to parameter setting menu via and keys Step 3 Enter the resistance level 1 5 by the number keypad or via knob with and keys Step 4 Press key to confirm Step 5 ...

Page 76: ...witch to mode by pressing and key simultaneously Step 2 Switch to parameter setting menu via and keys Step 3 Enter the current level 1000 by the number keypad or via knob with and keys Step 4 Press key to confirm Step 5 Switch to voltage limit option via and keys Step 6 Enter the voltage level 30 000 by the number keypad or via knob with and keys Step 7 Press key to confirm Step 8 Press key to ope...

Page 77: ... low level time the high time the rising time the falling time by the number keypad or via knob with and keys 5 Set the Mode level via knob or dynamic keys 6 Press key to confirm 7 Press key to open the load 8 If it is in pulsed transient operation or the toggled transient operation one trigger occurs when the signal at the trigger terminal TRIGIN is low level 4 7 1 Continuous Transient Operation ...

Page 78: ...m Step 3 Select H_Level via key or and keys enter the transient high level 150 by the number keypad or via knob with and keys then press key to confirm Step 4 Select LowTime via key or and keys enter the low level time 0 40000 by the number keypad or via knob with and keys then press key to confirm Step 5 Select LowTime via key or and keys enter the low level time 0 40000 by the number keypad or v...

Page 79: ...ient high level TRAN LTIME 400ms Set the low level time TRAN HTIME 200ms Set the high level time TRAN RTIME 10ms Set the time for rising edge TRAN FTIMR 20ms Set the time for falling edge TRAN MODE CONT Select transient operation mode INP ON Open the mode 4 7 2 Pulsed Transient Operation Example If the load is in external trigger mode set the voltage level periodically switch between 1A and 5A the...

Page 80: ...by the number keypad or via knob with and keys then press key to confirm Step 6 Select RiseTime via key or and keys enter the time for rising edge 0 00001 by the number keypad or via knob with and keys then press key to confirm Step 7 Select FallTime via key or and keys enter the time for falling edge 0 00001 by the number keypad or via knob with and keys then press key to confirm Step 8 Select Mo...

Page 81: ... set the resistance level periodically switch between 200Ω and 500Ω the time for rising edge to 10ms the high level time to 200ms the time for falling edge to 10ms and the low level time to 100ms The load is in toggle transient operation and executes one trigger simultaneously The procedures are shown as below Step 1 Press dynamic key to enter into transient mode and the parameter setting menu pre...

Page 82: ...me for falling edge 0 01000 by the number keypad or via knob with and keys then press key to confirm Step 8 Select Mode via key or and keys select Togg via knob or dynamic keys then press key to confirm Step 9 Press key to open the load Step 10 Send the load the trigger initial command INIT or INIT CONT Step 11 The signal at the trigger terminal TRIG IN is low and the load executes one trigger The...

Page 83: ...st operation mode and the parameter setting menu as shown in the following diagram 2 Select the Number via the number keypad or via the knob and then press key to confirm 3 Select Name via key and set the name 5 characters via the knob or the and keys then press key to confirm 4 Select Chain via key and select the sequence number or whether or not link ON means chained OFF means non chained via th...

Page 84: ...ing parameter via TAB key then make the selection via the and key or the knob and enter the value via the keypad then press key to confirm and save the data into the designed EEPROM 9 Press dynamic key to return to the list operation menu 10 Press dynamic key to start the list operation program 11 At starting status press dynamic key to stop the list operation program 12 In the list operation menu...

Page 85: ...ing diagram Step 2 Set the sequence Number to 0 via the keypad or via the knob and then press key to confirm Step 3 Select Name via key and set the name to Test0 via and keys and the knob Step 4 Select Chain via key and edit the chain option to OFF via and keys or the knob Step 5 Select Steps via key and edit the step quantity number to 5 via and keys or the knob Step 6 Select Loops via key and ed...

Page 86: ...Time option via TAB key set the value to 1 0000 via and keys or via the knob Step 10 Select Step 003 via and keys select Mode and set mode to CVH via the knob then select Value option via TAB key set the value to 10 000 via and keys or via the knob then select Time option via TAB key set the value to 1 0000 via and keys or via the knob Step 11 Select Step 004 via and keys select Mode and set mode ...

Page 87: ...e sequence numbered 0 LIST MEMO Test0 Name the sequence Test LIST EDIT 0 CCL 1A 1S LIST EDIT 1 CCH 20A 1S LIST EDIT 2 CVH 10V 1S LIST EDIT 3 CRL 1R 1S LIST EDIT 4 CP 200W 1S The above five commands are the sequence steps LIST COUN 10 Cyclic time LIST CHA OFF Close the chained sequence of the list LIST ON Start the list operation LIST OFF Stop the list operation 4 8 2 Starting Stopping the List Exa...

Page 88: ...enu as shown in the following diagram The saving and recalling operation procedures are as followings 1 Press SAVE key to enter into the saving menu as in the following diagram or press CALL key to enter into the recalling menu of the load 2 Press and keys or the knob to select the saving or recalling location 3 Press key to confirm The parameters will be saved into the EEPROM If the pointed locat...

Page 89: ...CH Set the load CCH mode CURR 2 Set the current level 2A INP ON Open the load SAV 0 Save the parameters to Location 0 in the EEPROM Example 2 Based on the above example set the load CV mode set the voltage be 40V Turn off the load Recall the values saved in Location 0 in EEPROM And the detailed operation procedures are as below Step 1 Set the load CV mode and the voltage 40V then turn off the load...

Page 90: ...he error that occurred after the last time the system had introduced 4 Press dynamic key to return to the system initial interface 5 If the errors have been ruled out the system will no longer display the next time you enter the error interface Example Clear RV protection of the load The detailed procedures are as below Step 1 Correctly re connect the power supply and the electronic load Step 2 Pr...

Page 91: ... in 4 8 1 The detailed procedures are as below Procedures Detailed Operation Step 1 Select List in main menu for the trigger function Please refer to 4 14 6 for details Step 2 Send initial command INT or INIT CONT Step 3 Trigger terminal TRIG IN receives the TTL falling edge The load s input will change according to the sequence parameters The corresponding SCPI commands of the above procedures sh...

Page 92: ...Select Buzzer via keys or keys and press key to confirm Step 3 The following diagram will be displayed Select Disabled via keys and then press key to confirm Step 4 Press dynamic key to exit the main menu 4 12 2 Encoder Example Encoder disabled The detailed procedures are as below Step 1 Press dynamic key to enter into the main menu Step 2 Select Encoder via keys or keys and press key to confirm S...

Page 93: ...s key to confirm Step 3 The following diagram will be displayed Select Disabled via keys and then press key to confirm Step 4 Press dynamic key to exit the main menu 4 14 6 Calibration Refer to 375XA Calibration Manual for details 4 12 5 Information Example Check device information The detailed procedures are as below Step 1 Press dynamic key to enter into the main menu Step 2 Select Device via ke...

Page 94: ...key to enter into the main menu Step 2 Select Secure via keys or keys and press key to confirm Step 3 The following diagram will be displayed Step 4 Press dynamic key to exit the main menu Example 1 Change the safety code to 123456 The detailed procedures are as below Step 1 Press dynamic key to enter into the main menu Step 2 Select Secure via keys or keys and press key to confirm ...

Page 95: ... enter into the main menu Step 2 Select Secure via keys or keys and press key to confirm Step 3 The above diagram will be displayed Step 4 Enter the system safety code 003751 the factory default safety code via the number keypad then press key to confirm Step 5 Press key to confirm directly without entering any character Then press dynamic key to exit the main menu 4 12 7 Date Example Check date i...

Page 96: ... Time via keys or keys and press key to confirm Step 3 The following diagram will be displayed Step 4 Select Hour Min and Sec via keys and regulate the level via the number keypad or the knob After pressing key the initial interface will display the set time Step 5 Press dynamic key to exit the main menu 4 12 9 Language The language of the system can be switched between English and Chinese The det...

Page 97: ...12 10 System Default This menu will help to restore the factory default settings The detailed procedures are as below Step 1 Press dynamic key to enter into the main menu Step 2 Select Recovery via keys or keys and press key to confirm Step 3 In the pop up dialog If Yes is chosen it will restore the factory default settings if No is not chosen it will not restore the factory default settings Step ...

Page 98: ...est SCPI commands For more detailed explanations please refer to ARRAY 375XA Electronic Load SCPI Programming Guide 5 1 Communication Interface 5 1 1 RS232 RS232 interface is the standard configuration of the load Correctly connect the load and the PC via the RS232 interface shipped with the load Select RS232 interface in the MENU and set the Baud rate parity data bit stop bit and so on correspond...

Page 99: ...ent GPIB address in PC software Input the legal SCPI commands in the PC software interface to operate the load Notes GPIB address 0 30 Maximum 15 devices altogether 20m cable length 2m between each device Unique address assigned to each device Pin Assignment Pin Signal Pin Signal 1 4 Data I O 1 4 13 16 Data I O 5 8 5 EOI 17 REN 6 DAV 18 Ground DAV 7 NRFD 19 Ground NRFD 8 NDAC 20 Ground NDAC 9 IFC ...

Page 100: ...ect the Baud Rate menu item via and keys set the parameter to 9600 via the knob and then press key to enter Step 4 Select the Data Bit menu item via and keys set the parameter to 8 via the knob and then press key to enter Step 5 Select the Polarity menu item via and keys set the parameter to None via the knob and then press key to enter Step 6 Select the Stop Bit menu item via and keys set the par...

Page 101: ... 2 Select GPIB communication port and set the address to 4 Step 1 Press key to enter into the I O configuration set menu as in the following diagram Step 2 Select the GPIB menu item via and keys then press key to enter Step 3 Set the parameter to 4 via the knob and then press key to enter Step 4 Press dynamic key to exit the GPIB menu Step 5 Press dynamic key to exit the I OConfig menu ...

Page 102: ...eration mode and operation parameters of the device for the load from the computer 5 4 Returning Data The load can return not only the parameters such as parameter setting level input voltage level input current level input power level and so on but also the internal information and the device identification to the computer For example the query command MEASure CURRent is to ask the load to return...

Page 103: ... and the associated mode is selected the corresponding programmed value will take effect at the input terminal 5 5 2 Transient Level The transient high level of CC CV or CR mode must higher that the respective low level or the transient operation will be disabled 5 5 3 Programmable Current Protection When the programmable current protection is enable and the programmed current limit and time delay...

Page 104: ...ance level to 10Ω and return back the computed power level l INP OFF Turn off the load s input 2 MODE CRL Select the CRL Mode 3 CURR PROT 10 Set the current protection level to 10A 4 CURR PROT DEL 10 Set the current protection delay time to 10s 5 CURR PROT STAT ON Active the current protection 6 RES 10 Set the resistance level to 10Ω 7 INP ON Turn on the load s input 8 MEAS POW Measure the input p...

Page 105: ...ulsed transient operation mode select the BUS as the trigger source and set a high level pulse with 1ms width 1 INP OFF Turn off the load s input 2 MODE CVL Select the CVL Mode 3 SYST STAT TRAN Open the transient operation function 4 TRIG SOUR BUS Select BUS as the trigger source 5 VOLT 0 5 Set the transient low level to 0 5V 6 VOLT TLEV 1 Set the transient high level to 1V 7 TRAN HTIM 1ms Set the...

Page 106: ... 40ºC 0 180A 0 240V 3000W at 40ºC 0 240A 0 240V 4000W at 40ºC 0 260A 0 240V 5000W at 40ºC Input Characteristics Constant Current Mode Low Range Resolution Accuracy 0 6A 0 1mA 0 2 5mA 0 6A 0 1mA 0 2 5mA 0 6A 0 1mA 0 2 5mA 0 6A 0 1mA 0 2 5mA 0 8A 0 1mA 0 2 5mA 0 8A 0 1mA 0 2 5mA 0 8A 0 1mA 0 2 5mA High Range Resolution 0 100A 1mA 0 100A 0 150A 1mA 0 100A 0 75A 1mA 0 75A 0 160A 1mA 0 100A 0 180A 1mA ...

Page 107: ...40V 1mV 0 100V 10mV 100 240V 0 2 10mV 0 240V 1mV 0 100V 10mV 100 240V 0 2 10mV 0 240V 1mV 0 100V 10mV 100 240V 0 2 10mV Constant Resistance Mode Low Range Resolution Accuracy I 6A 0 2Ω 240K 0 1mΩ 0 5 12mΩ 0 2Ω 240K 0 1mΩ 0 5 12mΩ 0 2Ω 240K 0 1mΩ 0 5 12mΩ 0 2Ω 240K 0 1mΩ 0 5 12mΩ 0 2Ω 240K 0 1mΩ 0 5 12mΩ 0 2Ω 240K 0 1mΩ 0 5 12mΩ 0 2Ω 240K 0 1mΩ 0 5 12mΩ High Range Resolution Accuracy I 6A 0 2KΩ 2 4...

Page 108: ...Resolution Accuracy 0 6A 0 1mA 0 1 6mA Vin 50KΩ 0 6A 0 1mA 0 1 6mA Vin 50KΩ 0 6A 0 1mA 0 1 6mA Vin 50KΩ 0 6A 0 1mA 0 1 6mA Vin 50KΩ 0 8A 0 1mA 0 1 6mA Vin 50KΩ 0 8A 0 1mA 0 1 6mA Vin 50KΩ 0 8A 0 1mA 0 1 6mA Vin 50KΩ High Range Resolution Accuracy 0 100A 1mA 0 100A 0 2 8mA Vin 50KΩ 0 150A 1mA 0 100A 10mA 100 150A 0 2 8mA Vin 50KΩ 0 75A 1mA 0 75A 0 2 8mA Vin 50KΩ 0 160A 1mA 0 100A 10mA 100 160A 0 2 ...

Page 109: ...00W 1mW 10mW 100mW 0 2 600mW 0 2000W 1mW 10mW 100mW 0 2 600mW 0 1000W 1mW 10mW 100mW 0 2 600mW 0 2400W 1mW 10mW 100mW 0 2 600mW 0 3000W 1mW 10mW 100mW 0 2 600mW 0 4000W 1mW 10mW 100mW 0 2 600mW 0 5000W 1mW 10mW 100mW 0 2 600mW Current Slew Rate Range 3 CCH CCL 2 1mA us 10A us 100uA us 600mA us 1mA us 15A us 100uA us 600mA us 1mA us 7 5A us 100uA us 600mA us 1mA us 16A us 100uA us 600mA us 1mA us 1...

Page 110: ...us 0 2 10us raise falling edge Resolution Accuracy 10us 10s 10us 0 2 10us 10us 10s 10us 0 2 10us 10us 10s 10us 0 2 10us 10us 10s 10us 0 2 10us 10us 10s 10us 0 2 10us 10us 10s 10us 0 2 10us 10us 10s 10us 0 2 10us List Operation Step Time Resolution Accuracy 10us 99999s 10us 0 2 10us 10us 99999s 10us 0 2 10us 10us 99999s 10us 0 2 10us 10us 99999s 10us 0 2 10us 10us 99999s 10us 0 2 10us 10us 99999s 1...

Page 111: ...10us TTL falling edge 10us TTL falling edge 10us TTL falling edge 10us Maximum DC Input Current Voltage 101A 242V 151A 242V 76A 242V 161A 242V 181A 242V 241A 242V 261A 242V Protection and Alarm Function OC OT OP OC OT OP OC OT OP OC OT OP OC OT OP OC OT OP OC OT OP Alarm Function OV RV OV RV OV RV OV RV OV RV OV RV OV RV Reverse Current Capacity Input OFF Input ON 90A 100A 120A 150A 60A 75A 120A 1...

Page 112: ...ge SCPI SCPI SCPI SCPI SCPI SCPI SCPI AC Input Voltage Frequency Input Power AC110V AC120V AC220V AC240V 10 48 to 63Hz 80VA AC110V AC120V AC220V AC240V 10 48 to 63Hz 80VA AC110V AC120V AC220V AC240V 10 48 to 63Hz 80VA AC110V AC120V AC220V AC240V 10 48 to 63Hz 80VA AC110V AC120V AC220V AC240V 10 48 to 63Hz 130VA AC110V AC120V AC220V AC240V 10 48 to 63Hz 130VA AC110V AC120V AC220V AC240V 10 48 to 63...

Page 113: ...linearly decrease from 100 to 75 between 40ºC to 50ºC 2 The current change rate is 600mA us in CCL mode 3 The transition time is defined as the time required for the input to change from 10 to 90 4 The transient frequency depends on the high low level time and the time for rising falling edge 5 Standard equipped RS232 and USB cable optional equipped GPIB card ...

Page 114: ...Chapter V Remote Programming Operation 110 ARRAY Frame Diagram Fig 1 ...

Page 115: ...ＣｈａｐｔｅｒＶＲｅｍｏｔｅＰｒｏｇｒａｍｍｉｎｇＯｐｅｒａｔｉｏｎ 111 ARRAY ...

Page 116: ...Chapter V Remote Programming Operation 112 ARRAY Fig 2 ...

Page 117: ...geneous materials for this part according to EIP A EIP B EIP C is below the limit requirement in SJ T11363 2006 Indicates that this toxic or hazardous substance contained in all the homogeneous materials for this part according to EIP A EIP B EIP C is above the limit requirement in SJ T11363 2006 Parts with in the above table containing lead because it is without mature replacement in instrumental...

Page 118: ...ate of the equipment The environmental protection period of the products in normal use will be up to 10 years After the environmental protection period please do a good classified work to the Recyclable and Unrecyclable items to protect the environment ...

Page 119: ...ＣｈａｐｔｅｒＶＲｅｍｏｔｅＰｒｏｇｒａｍｍｉｎｇＯｐｅｒａｔｉｏｎ 115 ARRAY RECORDS DATE REVISION EDITION DESCRIPTION ECO NO 2016 04 13 A0 0 INITIAL VERSION N A 2017 01 16 A1 1 ADD MODEL N A ...

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