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ITech IT8300 Series Programming Manual

Energy-regenerative dc electronic load
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See also: User Manual
Energy-regenerative DC
Electronic Load
Series IT8300 Programming Guide
Model: IT8311/IT8312/IT8321/IT8322/IT8331/IT8332/
IT8341/IT8342/IT8351/IT8352/IT8361/IT8362/IT8371
/IT8372/IT8381/IT8382/IT8391/IT8392
Revision: V1.0

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  • Page 1 Energy-regenerative DC Electronic Load Series IT8300 Programming Guide Model: IT8311/IT8312/IT8321/IT8322/IT8331/IT8332/ IT8341/IT8342/IT8351/IT8352/IT8361/IT8362/IT8371 /IT8372/IT8381/IT8382/IT8391/IT8392 Revision: V1.0...
  • Page 2 A CAUTION sign denotes a extent of laws, ITECH is not committed without prior permission and written to any explicit or implied guarantee for hazard. It calls attention to an consent from Itech Electronic, Co., Ltd.

  • Page 3: Warranty Service

    ITECH, and ITECH will be responsible for return freight.  If the product is sent to ITECH for warranty service from other countries, the customer will be responsible for all the freight, duties and other taxes. Limitation of Warranty...

  • Page 4: Safety Precautions

     Do not block the air vent of the equipment. Environmental conditions The IT8300 series electronic load can only be used indoors or in low condensation areas. The following table shows general environmental requirements for this instrument. Environmental conditions Requirement Copyright ©...

  • Page 5: Regulation Tag

    According to the equipment classification in Annex I of the WEEE directive, this instrument belongs to the “Monitoring” product. If you want to return the unnecessary instrument, please contact the nearest sales office of ITECH. Copyright © ITECH Electronics Co., Ltd.

  • Page 6: Compliance Information

    Connection of the instrument to a test object may produce radiations beyond the specified limit. Use high-performance shielded interface cable to ensure conformity with the EMC standards listed above. Safety Standard IEC 61010-1:2010/ EN 61010-1:2010 Copyright © ITECH Electronics Co., Ltd.

  • Page 7: Table Of Contents

    SYSTem:ERRor? ..............................26 SYSTem:CLEar............................... 26 SYSTem:LOCal ..............................26 SYSTem:REMote ..............................27 SYSTem:RWLock ..............................27 SYSTem:BEEPer:IMMediate ..........................28 SYSTem:BEEPer[:STATe] ............................. 28 SYSTem:KEY ................................. 28 SYSTem:COMMunicate:SELect ..........................29 SYSTem:COMMunicate:RS232:BAUDrate ......................29 SYSTem:COMMunicate:RS485:BAUDrate ......................29 SYSTem:COMMunicate:LAN:CURRent:ADDRess ....................30 Copyright © ITECH Electronics Co., Ltd.
  • Page 8 [SOURce:]PROTection:CLEar ..........................49 [SOURce:]CURRent[:LEVel][:IMMediate] ......................49 [SOURce:]CURRent:RANGe ..........................50 [SOURce:]CURRent:SLEW[:BOTH] ........................51 [SOURce:]CURRent:SLEW:POSitive ........................51 [SOURce:]CURRent:SLEW:NEGative ........................52 [SOURce:]CURRent:SLEWrate:STATe ......................... 53 [SOURce:]CURRent:PROTection:STATe......................53 [SOURce:]CURRent:PROTection[:LEVel] ......................54 [SOURce:]CURRent:PROTection:DELay ......................54 [SOURce:]CURRent:TRANsient:MODE ....................... 55 [SOURce:]CURRent:TRANsient:ALEVel ......................56 Copyright © ITECH Electronics Co., Ltd.
  • Page 9 *CLS - Clear Status ..............................80 *ESE <NRf> - Event Enable ........................... 80 *ESR? ..................................81 *IDN? ..................................81 *OPC ..................................81 *PSC ..................................82 *RCL ..................................83 *RST ..................................83 *SAV ..................................83 *SRE ..................................84 Copyright © ITECH Electronics Co., Ltd.
  • Page 10 IT8300 Programming Guide *STB? ..................................84 *TRG ..................................85 *TST? ..................................85 *WAI ..................................85 CHAPTER12 ERROR INFORMATION ......................87 Copyright © ITECH Electronics Co., Ltd. viii...

  • Page 11: Chapter1 Remote Control

     Use a semicolon to separate commands within a message.  Head paths influence how the instrument interprets commands. We consider the head path as a string which will be inserted in front of Copyright © ITECH Electronics Co., Ltd.
  • Page 12 A SCPI command word can be sent in its long-form or short-form version. The command subsystem tables in Section 5 provide the in the long-form version. However, the short-form version is indicated by upper case characters. Examples: Copyright © ITECH Electronics Co., Ltd.

  • Page 13: Message Type Of Scpi

    The simplest SCPI command is a single message unit consisting of a command header (or keyword) followed by a message terminator. The message unit may include a parameter after the header. The parameter can be numeric or a string. VOLTage 20<NL> Copyright © ITECH Electronics Co., Ltd.

  • Page 14: Response Data Type

    <CRD> Character Response Data. Permits the return of character strings.  <AARD> Arbitrary ASCII Response Data. Permits the return of undelimited 7-bit ASCII. This data type has an implied message terminator.  <SRD> String Response Data. Returns string parameters enclosed in double quotes Copyright © ITECH Electronics Co., Ltd.

  • Page 15: Command Format

    If you send more than one query command in the same program message (see the paragraph entitled, “ Multiple Command Messages “), the multiple response messages for all the queries is sent to the computer when the IT8300 series is addressed to talk. The responses are sent in the order that the query commands were sent and are separated by semicolons (;).
  • Page 16 Then, you may query count value by sending the following command: TRIG:COUN? You may also query the allowable minimum or maximum count as follows: TRIG:COUN?MIN TRIG:COUN?MAX Comma (,) If a command requires several Parameter, then a comma must be used to separate adjacent Parameter. Copyright © ITECH Electronics Co., Ltd.

  • Page 17: Data Type

     <Nrf+>: The extensible decimal form includes <NRf> and MIN MAX DEF, such as 273 273. 2.73E2 MAX. MIN and MAX are the minimum and maximum finite number. Within the range of the parameter Copyright © ITECH Electronics Co., Ltd.

  • Page 18: Scpi Command Complete

    Since your program can read this status bit on an interrupt basis, *OPC allows subsequent commands to be executed. Note The trigger system must be in the Idle state in order for the status OPC bit to be true. Copyright © ITECH Electronics Co., Ltd.

  • Page 19: Remote Operation

    GPIB command library for C or QuickBASIC. IOCLEAR (705) 1.9 Remote Operation IT8300 series have five standard communication interfaces: RS232, USB, RS485, LAN and CAN. The customer can choose any one according to his demands. 1.9.1 RS232 Interface Cable connection load with both ends of COM interface (DB9) and computer.

  • Page 20: Usb Interface

    (each end). All functions of the load can be programmed via USB. The functions of load USB488 interface are as follows:  The interface is 488.2 USB488 Interface.  The interface receives requests of REN_CONTROL, GO_TO_LOCAL and LOCAL_LOCKOUT. Copyright © ITECH Electronics Co., Ltd.

  • Page 21: Lan Interface

    The PC and load have same Baud rate. Appropriate interface pin or adapter is used, as described in CAN connector. The interface cable is correctly connected (CAN_H to CAN_H, CAN_L to CAN_L). Check whether 120 Ω terminal resistance is connected. Copyright © ITECH Electronics Co., Ltd.

  • Page 22: Rs485 Interface

    Output Queue - used to hold reading and response messages  Error Queue - used to hold error and status messages The IT8300 series status model shows how the two queues are structured with the other registers. Copyright © ITECH Electronics Co., Ltd.

  • Page 23: Status Byte And Service Request (Srq)

    Circulation power  Sending the *CLS command Note: The MAV bit may or may not be cleared. Service request enable register This register is programmed by you and serves as a mask for the status Copyright © ITECH Electronics Co., Ltd.

  • Page 24: Serial Poll And Srq

    TIMer: this generates triggers that are in synchronization with the electronic load's internal oscillator as the trigger source. The internal oscillator begins running as soon as this command is executed. Send TRIG:TIM to program Copyright © ITECH Electronics Co., Ltd.
  • Page 25 BUS: event detection is ended when a bus trigger (GET or *TRG) is received by the electronic load.  Delay: The user can set the timing trigger delay time, the time range 0 to 999999.999S. Copyright © ITECH Electronics Co., Ltd.

  • Page 26: Chapter2 Scpi Register

    Both bits remain set until the condition is removed and PROT:CLE is programmed. Protection Shutdown: The protection shutdown circuit has tripped because of an Over-current, over-power, or over-temperature condition. The bit remains set until PROT:CLE is programmed. Copyright © ITECH Electronics Co., Ltd.
  • Page 27 Request Service: During a serial poll, RQS is returned and cleared. Master Status Summary: For an *STB? query, MSS is returned without being cleared. OPER Operation Status Summary: Indicates if an operation event has occurred. Copyright © ITECH Electronics Co., Ltd.

  • Page 28: Condition Register

    The bits of an event register are logically ANDed with the bits of the corresponding enable register and applied to an OR gate. The output of the OR gate is applied to the status byte register. Copyright © ITECH Electronics Co., Ltd.

  • Page 29: Enable Register

    Circulationpower: Clear all the enable register.  :STATus: PREset clears the following enable registers: Operation event enable register Questionable event enable register Channel overview event enable register  *ESE 0 clears the standard event status enable register. Copyright © ITECH Electronics Co., Ltd.

  • Page 30: Chapter3 Essential Commands

    (QUES) of the status byte register. The bit (bit 3) is the logic OR of all query event register, is enabled by the quest status enable register. Command syntax STATus:QUEStionable:ENABle <NR1> Arguments 0 to 65535 Default value Example STAT:QUES:ENAB 32 Query syntax STATus:QUEStionable:ENABle? Returns <NR1> (register value) Copyright © ITECH Electronics Co., Ltd.

  • Page 31: Status:questionable:ptransition

    1 to 0, and the corresponding bit of positive change enable register is 1, then the corresponding bit of the quest event register is 1. Command Syntax STATus:QUEStionable:NTRansition <NR1> Parameters 0 to 65535 Default value Copyright © ITECH Electronics Co., Ltd.

  • Page 32: Status:questionable:condition

    This command query the query operation event register values. The event register is read-only register, which holds (latches) all value passed by the NTR and, or PTR filter. Read channel operation event register will clear it. Query Syntax STATus:OPERation[:EVENt]? Parameters None Examples STAT:OPER:EVEN? Copyright © ITECH Electronics Co., Ltd.

  • Page 33: Status:operation:enable

    Related Parameters STAT:OPER? STATus:OPERation:CONDition? This query returns the value of operation condition register. That is a read-only register that holds the real-time (unlatched) operational status of the electronic load. Query Syntax STATus:OPERation:CONDition? Parameters None Copyright © ITECH Electronics Co., Ltd.

  • Page 34: Status:preset

    Quest event enable register  Channel overview event enable register  Operation event enable register Note that the register not list above will not be affected by the command. Command Syntax STATus:PRESet Parameters None Examples STAT:PRES Copyright © ITECH Electronics Co., Ltd.

  • Page 35: Chapter4 System Commands

    This query returns the SCPI revision of the load used. The format is YYYY.V, where YYYY is the year and V is the revision number for that year. Query Syntax SYSTem:VERSion? Parameters None Examples SYST:VERS? Copyright © ITECH Electronics Co., Ltd.

  • Page 36: System:error

    This action is used to clear the error sequence information. Command Syntax SYSTem:CLEar Parameters None Examples SYST:CLE Related Commands SYST:ERR? SYSTem:LOCal The command sets the load to local mode when in RS232 mode. You can use the buttons on front panel to operate. Copyright © ITECH Electronics Co., Ltd.

  • Page 37: System:remote

    This command can set the load to remote mode , the entire button on front panel will lose function including LOCAL button. Use SYSTem:LOCal return to local mode. Command Syntax SYSTem:RWLock Parameters None Examples SYST:RWL Related Commands SYST:REM SYST:LOC Copyright © ITECH Electronics Co., Ltd.

  • Page 38: System:beeper:immediate

    Command Syntax SYSTem:BEEPer <bool> Parameters OFF|ON|0|1 Examples SYSTem:BEEP 1 Query Syntax SYSTem:BEEPer[:STATe]? Returned Parameters SYSTem:KEY This command is used to simulate the key pressing. Command Syntax SYSTem:KEY <NR1> Examples SYST:KEY 6 Query Syntax SYSTem:KEY? Copyright © ITECH Electronics Co., Ltd.

  • Page 39: System:communicate:select

    This command is used to set the baudrate of RS232. Command Syntax SYSTem:COMMunicate:RS232:BAUDrate<4800|9600|19200|38400|57600|11 5200> Parameters 4800|9600|19200|38400|57600|115200 Examples SYSTem:COMM:RS232:BAUD 4800 Query syntax SYSTem:COMMunicate:RS232:BAUDrate? Returns <NR1> SYSTem:COMMunicate:RS485:BAUDrate This command is used to set the baudrate of RS485. Command Syntax SYSTem:COMMunicate:RS485:BAUDrate<4800|9600|19200|38400|57600|11 Copyright © ITECH Electronics Co., Ltd.

  • Page 40: System:communicate:lan:current:address

    Command Syntax SYSTem:COMMunicate:LAN:CURRent:ADDRess <STR> Parameters <STR> Unit None *RST Value 192.168.0.125 Examples SYST:COMM:LAN:CURR:ADDR “192.168.0.125” Query Syntax SYSTem:COMMunicate:LAN:CURRent:ADDRess? Returned Parameters <STR> SYSTem:COMMunicate:LAN:CURRent:DGATeway This command is used to set gateway of electronic load. Command Syntax SYSTem:COMMunicate:LAN:CURRent:DGATeway Copyright © ITECH Electronics Co., Ltd.

  • Page 41: System:communicate:lan:current:smask

    This command is used to set the subnet mask of electronic load. Command Syntax SYSTem:COMMunicate:LAN:CURRent:SMASk Parameters <STR> Unit None *RST Value 255.255.255.0 Examples SYST:COMM:LAN:CURR:SMAS “255.255.255.0” Query Syntax SYSTem:COMMunicate:LAN:CURRent:SMASk? Returned Parameters <STR> SYSTem:COMMunicate:LAN:SOCKetport This command is used to set socket port of communication. Copyright © ITECH Electronics Co., Ltd.

  • Page 42: System:communicate:lan:macaddress

    Command Syntax SYSTem:COMMunicate:LAN:SOCKetport <NR1> Parameters <NR1> Unit None *RST Value 30000 Query Syntax SYSTem:COMMunicate:LAN:SOCKetport? Returned Parameters <NR1> SYSTem:COMMunicate:LAN:MACaddress? This command is used to return the MAC address of LAN communication. Command syntax SYSTem:COMMunicate:LAN:MACaddress? Parameters <STR> Copyright © ITECH Electronics Co., Ltd.

  • Page 43: Chapter5 Measure Commands

    Syntax FETch:VOLTage[:DC]? MEASure:VOLTage[:DC]? Parameters None Example FET:VOLT? MEAS:VOLT? Returns <NRf> FETCh:VOLTage:MAX? MEASure:VOLTage:MAX? This command returns the input maximum voltage stored in the communications buffer of the electronic load. Syntax FETCh:VOLTage:MAX? MEASure:VOLTage:MAX? Parameter None Copyright © ITECH Electronics Co., Ltd.

  • Page 44: Fetch:voltage:min

    This command returns the input current stored in the communications buffer of the electronic load. Syntax FETch:VOLTage[:DC]? MEASure:CURRent[:DC]? Parameter None Example FET:CURR? MEAS:CURR? Returns <NRf> FETCh:CURRent:MAX? MEASure:CURRent:MAX? This command returns the input maximum current stored in the communications buffer of the electronic load. Copyright © ITECH Electronics Co., Ltd.

  • Page 45: Fetch:current:min

    Syntax FETCh:CURRent:MIN? MEASure:CURRent:MIN? Parameter None Returns <NRf> FETCh:POWer[:DC]? This command returns the input power stored in the communications buffer of the electronic load. Syntax FETch:POWer[:DC]? Parameter None Example FET:POW? Returns <NRf> Copyright © ITECH Electronics Co., Ltd.

  • Page 46: Fetch:capability

    This command returns the integration time stored in the communications buffer of the electronic load. Syntax FETCh:TIME? MEASure:TIME? Parameter None Returns <NRf> FETCh:ACMeter:EACStage? This command is used to read the total regenerative energy in stages. Syntax FETCh:ACMeter:EACStage? Parameter None Returns <NRf> Copyright © ITECH Electronics Co., Ltd.

  • Page 47: Fetch:acmeter:eactotal

    Measure Commands FETCh:ACMeter:EACTotal? This command is used to read the total regenerative energy in history operation. Syntax FETCh:ACMeter:EACTotal? Parameter None Returns <NRf> Copyright © ITECH Electronics Co., Ltd.

  • Page 48: Chapter6 Trigger Subsystem

    TIMer The trigger will synchronize with the crystal within the electronic load. Once the command is executed a synchronous oscillator will start running. Use the TRIG: TIM to edit crystal cycle. Command Syntax TRIGger:SOURce <CRD> Parameters BUS|HOLD|MANUal|TIMer *RST Value MANUal Examples TRIG:SOUR BUS Copyright © ITECH Electronics Co., Ltd.

  • Page 49: Trigger:timer

    This command specifies the period of the triggers generated by the internal trigger generator. Command Syntax TRIGger:TIMer <NRf+> Parameters |MINimum|MAXimum|DEFault Units seconds *RST Value 0.01 Example TRIG:TIM 0.25 TRIG:TIM MAX Query Syntax TRIGger:TIMer? [MINimum|MAXimum|DEFault] Returned Parameter <NR3> Related Commands ABOR TRIG TRIG:SOUR TRIG:DEL Copyright © ITECH Electronics Co., Ltd.

  • Page 50: Chapter7 Trace Subsystem

    Query Syntax TRACe:FREE? Returned Parameters <NR1>, <NR1> Examples TRAC:FREE? TRACe:POINts This command is used to specify the size of the buffer. Command Syntax TRACe:POINts <NRf+> Parameters 2 to 2000|MINimum|MAXimum|DEFault Copyright © ITECH Electronics Co., Ltd.

  • Page 51: Trace:feed

    TRAC:POIN maximum values is 1000. Command Syntax TRACe:FEED <CRD> Parameters VOLTage|CURRent|TWO *RST Value Examples TRAC:FEED VOLT Query Syntax TRACe:FEED? Returned Parameters <CRD> Related Commands TRAC:POIN TRACe:FEED:CONTrol This command is used to select the buffer control. With NEVer selected, Copyright © ITECH Electronics Co., Ltd.

  • Page 52: Trace:data

    Query Syntax TRACe:DATA? Returned Parameters {<NR3>} TRACe:FILTer[:STATe] This command is used to select whether the data in cache is the data filtered. Command Syntax TRACe:FILTer[:STATe] <BOOL> Parameters 0|1|ON|OFF *RST Value Copyright © ITECH Electronics Co., Ltd.

  • Page 53: Trace:delay

    *RST Value Examples TRAC:DEL 1 Query Syntax TRACe:DELay? [MINimum|MAXimum|DEFault] Returned Parameters <NR3> TRACe:TIMer This command is used to select the interval of the cache. Command Syntax TRACe:TIMer <NRf> Parameters 0.00002 to 3600s|MINimum|MAXimum|DEFault UNIT S (second) Copyright © ITECH Electronics Co., Ltd.
  • Page 54 Trace Subsystem *RST Value Examples TRAC:TIM 0.1 Query Syntax TRACe:TIMer? [MINimum|MAXimum|DEFault] Returned Parameters <NR3> Copyright © ITECH Electronics Co., Ltd.

  • Page 55: Chapter8 Source Subsystem

    Related Commands *RCL *SAV [SOURce:]INPut:SHORt[:STATe] This command programs the specified electronic load module to the maximum current that it can sink in the present operating range. Command Syntax [SOURce:]INPut:SHORt[:STATe] <bool> Parameters 0|1|OFF|ON *RST Value Copyright © ITECH Electronics Co., Ltd.

  • Page 56: [Source:]Input:timer[:State]

    Command Syntax [SOURce:]INPut:TIMer[:STATe] <bool> Parameters 0|1|OFF|ON *RST Value Examples INP:TIM 1 Query Syntax [SOURce:]INPut:TIMer[:STATe]? Returned Parameters Related Commands INP:TIM:DEL [SOURce:]INPut:TIMer:DELay This command specifies the load on timer. Command Syntax [SOURce:]INPut:TIMer:DELay <NRf+> Parameters 1 to 60000s|MINimum|MAXimum|DEFault Copyright © ITECH Electronics Co., Ltd.

  • Page 57: [Source:]Remote:sense[:State]

    Parameters 0|1|OFF|ON *RST Value Examples REM:SENS 0 Query Syntax [SOURce:]REMote:SENSe[:STATe]? Returned Parameters <CRD> [SOURce:]FUNCtion These equivalent commands select the input regulation mode of the electronic load.  constant current mode  constant resistance mode Copyright © ITECH Electronics Co., Ltd.

  • Page 58: [Source:]Function:mode

    The regulation mode is determined by the FUNCtion or MODE command.  LIST The regulation mode is determined by the active list. Command Syntax [SOURce:]FUNCtion:MODE <mode> Parameters FIXed|LIST *RST Value FIXed Examples FUNC:MODE FIX Query Syntax [SOURce:]FUNCtion:MODE? Returned Parameters <CRD> Copyright © ITECH Electronics Co., Ltd.

  • Page 59: [Source:]Transient[:State]

    The input is then restored to the state it was in before the fault condition occurred. Command Syntax [SOURce:]PROTection:CLEar Parameters None Examples INP:PROT:CLE [SOURce:]CURRent[:LEVel][:IMMediate] This command sets the current that the load will regulate when operating in constant current mode. Copyright © ITECH Electronics Co., Ltd.

  • Page 60: [Source:]Current:range

    If the existing settings are within the new range: No adjustment is made. If the existing settings are outside the new range: The levels are set to the maximum value of the new range. Command Syntax [SOURce:]CURRent:RANGe <NRf+> Parameters 0 through MAX|MINimum|MAXimum|DEFault Copyright © ITECH Electronics Co., Ltd.

  • Page 61: [Source:]Current:slew[:Both]

    Related Commands CURR:SLEW:NEG CURR:SLEW:POS [SOURce:]CURRent:SLEW:POSitive This command sets the slew rate of the current for positive going transitions. MAXimum sets the slew to the fastest possible rate. MINimum sets the slew to the slowest rate. Copyright © ITECH Electronics Co., Ltd.

  • Page 62: [Source:]Current:slew:negative

    MAXimum sets the slew to the fastest possible rate. MINimum sets the slew to the slowest rate. Command Syntax [SOURce:]CURRent:SLEW:NEGative <NRf+> Parameters MINimum to MAXimum|MAXimum|MINimum|DEFault Unit A (amps per micro second) *RST Value MAXimum Examples CURR:SLEW:NEG MAX Query Syntax [SOURce:]CURRent:SLEW:NEGative? [MINimum|MAXimum|DEFault] Copyright © ITECH Electronics Co., Ltd.

  • Page 63: [Source:]Current:slewrate:state

    *RST Value Examples CURR:SLEW:STAT 1 Query Syntax [SOURce:]CURRent:SLEWrate:STATe? Returned Parameters <NR3> Related Commands CURR:SLEW [SOURce:]CURRent:PROTection:STATe This command enables or disables the over-current protection feature. Command Syntax [SOURce:]CURRent:PROTection:STATe <Bool> Parameters 0|1|OFF|ON *RST Value Examples CURR:PROT:STAT 1 Copyright © ITECH Electronics Co., Ltd.

  • Page 64: [Source:]Current:protection[:Level]

    Examples CURR:PROT 2 Query Syntax [SOURce:]CURRent:PROTection[:LEVel]? [MINimum|MAXimum|DEFault] Returned Parameters Related Commands CURR:PROT:DEL CURR:PROT:STAT [SOURce:]CURRent:PROTection:DELay This command specifies the time that the input current can exceed the protection level before the input is turned off. Copyright © ITECH Electronics Co., Ltd.

  • Page 65: [Source:]Current:transient:mode

    PULSe The transient generator puts out a single pulse upon receipt of a trigger.  TOGGle The transient generator toggles between two levels upon receipt of a trigger. Command Syntax [SOURce:]CURRent:TRANsient:MODE <mode> Parameters CONTinuous|PULSe|TOGGle *RST Value CONTinuous Examples CURR:TRAN:MODE TOGG Copyright © ITECH Electronics Co., Ltd.

  • Page 66: [Source:]Current:transient:alevel

    [SOURce:]CURRent:TRANsient:ALEVel <NRf+> [SOURce:]CURRent:TRANsient:BLEVel <NRf+> Parameters 0 through MAX|MINimum|MAXimum|DEFault Unit A (amperes) *RST Value ALEVEL MAXimum , BLEVel MINnum Examples CURR:TRAN:ALEV 5 CURR:TRAN:BLEV 0.5 Query Syntax [SOURce:]CURRent:TRANsient:ALEVel? [MINimum|MAXimum|DEFault] [SOURce:]CURRent:TRANsient:BLEVel? [MINimum|MAXimum|DEFault] Returned Parameters <NR3> Related Commands CURR Copyright © ITECH Electronics Co., Ltd.

  • Page 67: [Source:]Current:transient:awidth

    Returned Parameters <NR3> [SOURce:]CURRent:HIGH [SOURce:]CURRent:LOW This command sets the high and low level of the voltage when in constant current mode. Command Syntax [SOURce:]CURRent:HIGH <NRf+> [SOURce:]CURRent:LOW <NRf+> Parameters MINimum through MAX|MINimum|MAXimum|DEFault Unit V (volts) Copyright © ITECH Electronics Co., Ltd.

  • Page 68: [Source:]Voltage[:Level][:Immediate]

    *RST Value MAXimum Examples VOLT 5 Query Syntax [SOURce:]VOLTage[:LEVel][:IMMediate]? [MINimum|MAXimum|DEFault] Returned Parameters <NR3> Related Commands VOLT:RANG [SOURce:]VOLTage:RANGe This command sets the voltage range of the electronic load module. There are only one voltage ranges. Copyright © ITECH Electronics Co., Ltd.

  • Page 69: [Source:]Voltage[:Level]:On

    Related Commands VOLT [SOURce:]VOLTage[:LEVel]:ON This command sets the start load voltage of the load. Command Syntax [SOURce:]VOLTage[:LEVel]:ON <NRf+> Parameters 0 through MAX|MINimum|MAXimum|DEFault Unit V (volts) *RST Value MINimum Examples VOLT:ON 5 Query Syntax [SOURce:]VOLTage[:LEVel]:ON? [MINimum|MAXimum|DEFault] Copyright © ITECH Electronics Co., Ltd.

  • Page 70: [Source:]Voltage:latch[:State]

    Related Commands VOLT:ON [SOURce:]VOLTage:HIGH [SOURce:]VOLTage:LOW This command sets the high and low level of the current when in constant voltage mode. Command Syntax [SOURce:]VOLTage:HIGH <NRf+> [SOURce:]VOLTage:LOW <NRf+> Parameters MINimum through MAX|MINimum|MAXimum|DEFault Unit A (amps) Copyright © ITECH Electronics Co., Ltd.

  • Page 71: [Source:]Voltage[:Level]:On:hysteresis

    Unit V (volts) *RST Value MINimum Examples VOLT:ON:HYST 5 Query Syntax [SOURce:]VOLTage[:LEVel]:ON:HYSTeresis? [MINimum|MAXimum|DEFault] Returned Parameters <NR3> Related Commands VOLT:LATCh [SOURce:]RESistance[:LEVel][:IMMediate] This command sets the resistance of the load when operating in constant resistance mode. Copyright © ITECH Electronics Co., Ltd.

  • Page 72: [Source:]Resistance:range

    This command sets the resistance range of the electronic load module. Command Syntax [SOURce:]RESistance:RANGe <NRf+> Parameters MINimum through MAX|MINimum|MAXimum|DEFault Unit R(ohms) *RST Value MAXimum (high range) Examples RES:RANG 15 SOUR:RES:RANGE MIN Query Syntax [SOURce:]RESistance:RANGe? [MINimum|MAXimum|DEFault] Copyright © ITECH Electronics Co., Ltd.

  • Page 73: [Source:]Resistance:high

    [SOURce:]RESistance:HIGH? [MINimum|MAXimum|DEFault ] [SOURce:]RESistance:LOW? [MINimum|MAXimum|DEFault ] Returned Parameters <NR3> [SOURce:]POWer[:LEVel][:IMMediate] This command sets the power of the load when operating in constant power mode. Command Syntax [SOURce:]POWer[:LEVel][:IMMediate] <NRf+> Parameters MINimum through MAX|MINimum|MAXimum|DEFault Unit W (power) Copyright © ITECH Electronics Co., Ltd.

  • Page 74: [Source:]Power:range

    W (power) *RST Value MAXimum (high range) Examples POW:RANG 15 SOUR:POW:RANGE MIN Query Syntax [SOURce:]POWer:RANGe? [MINimum|MAXimum|DEFault] Returned Parameters <NR3> [SOURce:]POWer:HIGH [SOURce:]POWer:LOW This command sets the voltage high and low level in constant power mode. Copyright © ITECH Electronics Co., Ltd.

  • Page 75: [Source:]Power:protection[:Level]

    Note: Use POW:PROT:DEL command to stop the protection of instantaneous power, which is caused by stopping edit over power protection. Command Syntax [SOURce:]POWer:PROTection[:LEVel] <NRf+> Parameters 0 through MAX|MINimum|MAXimum|DEFault Unit W (power) *RST Value MAXimum Examples POW:PROT 100 Copyright © ITECH Electronics Co., Ltd.

  • Page 76: [Source:]Power:protection:delay

    Unit seconds *RST Value Examples POW:PROT:DEL 5 Query Syntax [SOURce:]POWer:PROTection:DELay? [MINimum|MAXimum|DEFault] Returned Parameters <NR1> Related Commands POW:PROT [SOURce:]POWer:CONFig[:LEVel] This command sets the hard power protection level. Command Syntax [SOURce:]POWer:CONFig[:LEVel] <NRf+> Parameters 0 through MAX|MINimum|MAXimum|DEFault Copyright © ITECH Electronics Co., Ltd.

  • Page 77: [Source:]Input:control

    This command is used to set the input control to be external or internal. Command Syntax [SOURce:]INPut:CONTrol <EXTernal/INTernal> Parameters EXTernal/INTernal Query Syntax [SOURce:]INPut:CONTrol? Returned Parameters EXTernal/INTernal [SOURce:]ACMeter:EACStage:CLEar This command is used to clear the total regenerative energy in stages. Command Syntax [SOURce:]ACMeter:EACStage:CLEar Parameters None Copyright © ITECH Electronics Co., Ltd.

  • Page 78: Chapter9 List Commands

    This command sets the number of times that the list is executed before it is completed. The command accepts parameters in the range 1 through 65535. Command Syntax [SOURce:]LIST:COUNt <NRf+> Parameters 1 to 65535|MINimum|MAXimum Examples LIST:COUN 3 Copyright © ITECH Electronics Co., Ltd.

  • Page 79: [Source:]List:step

    Returned Parameters <NR3> Related Commands LIST:LEV [SOURce:]LIST:SLOWrate[:STATe] <LOW|HIGH> This command is used to set the LIST mode: high speed or low speed. Command Syntax [SOURce:]LIST:SLOWrate[:STATe] <LOW|HIGH> Parameters LOW|HIGH Query Syntax [SOURce:]LIST:SLOWrate[:STATe]? Returned Parameters LOW|HIGH Copyright © ITECH Electronics Co., Ltd.

  • Page 80: [Source:]List:level

    MAXimum MINimum sets the slew to its slowest rate. LIST:SLEW? returns the number of points programmed. Command Syntax [SOURce:]LIST:SLEW[:BOTH] <NR1> ,<NRf> Parameters 1 to steps, MIN to MAX Unit NONE, NONE Examples LIST::SLEW1, 1.5 LIST:SLEW 2, MAX Query Syntax [SOURce:]LIST:SLEW[:BOTH]? <NR1> Copyright © ITECH Electronics Co., Ltd.

  • Page 81: [Source:]List:width

    Up to 7 files can be stored. File in saved in locations 1-7 are volatile, the data are nonvolatile, and the data will be saved when power is removed. Command Syntax [SOURce:]LIST:SAV <NR1> Parameters 1 to 7 Example LIST:SAV 3 Copyright © ITECH Electronics Co., Ltd.

  • Page 82: [Source:]List:rcl

    This command restores a list file that was previously stored in memory with a LIST:SAV command to the specified location. Command Syntax [SOURce:]LIST:RCL <NR1> Parameters 1 to 7 Example LIST:RCL 3 Related Commands [SOURce:]LIST:SAV Copyright © ITECH Electronics Co., Ltd.

  • Page 83: Chapter10 Calibration Commands

    Examples CAL:SEC 0, “8311” CAL:SEC ON Query Syntax CALibrate:SECure[:STATe]? Returned Parameters <NR1> Related Commands CAL:SAVE CAL:INIT CALibrate:INITial This command only be used in calibration mode. It re-saves the factory calibration constants in nonvolatile memory. Copyright © ITECH Electronics Co., Ltd.

  • Page 84: Calibrate:save

    P1, P2, P3, P4 for the host calibration, P1, P2 used in the host low current range, P3, P4 used in the host high current range. P5, P6 for slave calibration. Command Syntax CALibrate:CURRent:POINt <point> Parameters P1|P2|P3|P4|P5|P6 Examples CAL:CURR:POIN P2 Related Commands CAL:STAT CAL:SAV Copyright © ITECH Electronics Co., Ltd.

  • Page 85: Calibrate:current[:Level]

    Before you input this value, please select a calibration grade firstly (using the command CAL:CURR:METE:POIN). These constans do not exsist in the nonvolatile memory unless you send the command CALibrate:SAVE. Copyright © ITECH Electronics Co., Ltd.

  • Page 86: Calibrate:voltage:point

    (using the command CALibrate:VOLTage:POIN). These constans do not exsist in the nonvolatile memory unless you have sent the command CALibrate:SAVE. Command Syntax CALibrate:VOLTage[:LEVel] <NRf> Parameters <external reading> Copyright © ITECH Electronics Co., Ltd.

  • Page 87: Calibrate:voltage:meter:point

    CALibrate:VOLTage:POINt). All these constans do not exsist in the nonvolatile memory unless you have send the command CALibrate:SAVE to save them. Command Syntax CALibrate:VOLTage:METEr[:LEVel] <NRf> Parameters <external reading> Unit V (volts) Examples CAL:CURR 3.2223 Copyright © ITECH Electronics Co., Ltd.

  • Page 88: Calibration:string

    This information is a string of up to 24 characters long. Examples CAL:STR "2005-1-9 20:12" CALibration:STRing? Check the calibration information. Query Syntax CALibration:STRing? Returned Parameters The calibration information stored in the instrument. Examples CAL:STR? Copyright © ITECH Electronics Co., Ltd.

  • Page 89: Chapter11 Ieee488.2 Commands

    Read Status Byte Register *TRG Trigger Command Send a trigger to Load. *TST? Self-test query Performs a self-test and returns the result. *WAI Wait to continue command Wait until all previous commands are executed. Copyright © ITECH Electronics Co., Ltd.

  • Page 90: Cls - Clear Status

    The query reads the Standard Event Status Enable register. Command Syntax *ESE <NRf> Parameters 0 to 255 Powe-on Value see *PSC Examples *ESE 129 Query Syntax *ESE? Returned Parameters <NR1> Related Commands *ESR? *PSC *STB? Copyright © ITECH Electronics Co., Ltd.

  • Page 91: Esr

    All commands sent before *OPC have been executed. This includes overlapped commands. Most commands are sequential and are completed before the next command is executed. Overlapped commands are executed in parallel with other commands. Commands that affect trigger Copyright © ITECH Electronics Co., Ltd.

  • Page 92: Psc

    Command Syntax *PSC <bool> Parameters 0|1|ON|OFF Query Syntax *PSC? Returned Parameters Copyright © ITECH Electronics Co., Ltd.

  • Page 93: Rcl

    NOTE: *SAV does not save the programmed trigger values ([SOURce:]CURRent:TRIGGer, [SOURce:]RESistance:TRIGGer, [SOURce:]VOLTage:TRIGGer). Programming an *RCL or a *RST command causes the triggered settings to revert to their [IMMediate] settings. Command Syntax *SAV <NRf> Parameters 0 to 100 Copyright © ITECH Electronics Co., Ltd.

  • Page 94: Sre

    A serial poll also returns the value of the Status Byte register, except that bit 6 returns Request for Service (RQS) instead of Master Status Summary (MSS). A serial poll clears RQS, but not MSS. When MSS is set, it Copyright © ITECH Electronics Co., Ltd.

  • Page 95: Trg

    <NR1> 0 indicates the electronic load has passed selftest. Non-zero indicates an error code (see appendix C) *WAI This command instructs the electronic load not to process any further commands until all pending operations are completed. Pending operations are complete when: Copyright © ITECH Electronics Co., Ltd.
  • Page 96 All triggered actions are completed and the trigger system returns to the Idle state. *WAI can be aborted only by sending the electronic load a GPIB DCL (Device Clear) command. Command Syntax WAI? Parameters None Related Commands *OPC Copyright © ITECH Electronics Co., Ltd.

  • Page 97: Chapter12 Error Information

    (-221) Settings conflict [check current device state] (-222) Data out of range [e.g., too large for this device] (-223) Too much data [out of memory; block, string, or expression too long] (-224) Illegal parameter value [device-specific] Copyright © ITECH Electronics Co., Ltd.
  • Page 98 Equipment related errors from 100 to 32767 (Set bit 3 of standard event resgister) are explained as follows. RS-232 buffer overrun error RS-232 receiver framing error RS-232 receiver parity error RS-232 receiver overrun error Copyright © ITECH Electronics Co., Ltd.
  • Page 99 Lists inconsistent [lists have different list lengths] Too many sweep points Command only applies to RS-232 interface FETCH of data that was not acquired Measurement overrange Command not allowed while list initiated Corrupt update data Not Updating Copyright © ITECH Electronics Co., Ltd.
  • Page 100 Contact Us Thanks for purchasing ITECH products. In case of any doubts, please contact us as follows: 1. Refer to accompanying data disk and relevant manual. 2. Visit ITECH website: www.itechate.com. 3. Select the most convenient contact method for further information.

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