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Chroma 6310 Series Operation & Programming Manual

Programmable dc electronic load
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Programmable
DC Electronic Load
6310 Series
Operation & Programming
Manual
Version 1.4
March 2007
P/N A11 000078
www.valuetronics.com

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  • Page 1 Programmable DC Electronic Load 6310 Series Operation & Programming Manual Version 1.4 March 2007 P/N A11 000078 www.valuetronics.com...
  • Page 2 The information in this document is subject to change without notice. Chroma ATE INC. makes no warranty of any kind with regard to this manual, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose.
  • Page 3 Any recommendations made by Chroma for use of its products are based upon tests believed to be reliable, but Chroma makes no warranty of the results to be obtained. This warranty is in lieu of all other warranties, expressed or implied, and no representative or person is authorized to represent or assume for Chroma any liability in connection with the sale of our products other than set forth herein.
  • Page 4 “ ” indicates that the level of the specified chemical substance exceeds the threshold level specified in the standards of SJ/T-11363-2006 and EU 2005/618/EC. Chroma is not fully transitioned to lead-free solder assembly at this moment; however, most of the components used are RoHS compliant.
  • Page 5 CE-Conformity Declaration For the following equipment: Product Name: DC Electronic Load Model Name:6314, 6312, 63101, 63102, 63103, 63105, 63106, 63107, 63108, 63112 Manufacturer’s Name: Chroma ATE Inc. Manufacturer’s Address: 66 Hwa-Ya 1st Rd., Hwa-Ya Technical Park, Kuei-Shan Hsiang, Taoyuan Hsien, Taiwan...
  • Page 6 Failure to comply with these precautions or specific WARNINGS given elsewhere in this manual will violate safety standards of design, manufacture, and intended use of the instrument. Chroma assumes no liability for the customer’s failure to comply with these requirements.
  • Page 7 SAFETY SYMBOLS DANGER – High voltage. Explanation: To avoid injury, death of personnel, or damage to the instrument, the operator must refer to an explanation in the instruction manual. Protective grounding terminal: To protect against electrical shock in case of a fault. This symbol indicates that the terminal must be connected to ground before operation of equipment.
  • Page 8 June 2003 1.1 Correct the errors in CONFigure:VOLTage:LATCh for “CONGIFURE Subsystem” under “Language Dictionary”. May 2005 1.2 Change the address and phone no. of Chroma − Feb. 2006 1.3 Update the Short Circuit specifications for Model 63101, 63102, 63103, 63105, 63106, 63107, 63108 and 63112.
  • Page 9 Programmable DC Electronic Load 6310 Series Operation & Programming Manual Table of Contents PART 1: Operation General Information ....................1-1 Introduction ......................1-1 Description ......................1-1 Overview of Key Features.................. 1-2 Specifications ..................... 1-2 Installation ........................ 2-1 Introduction ......................2-1 Inspection ......................
  • Page 10 Programmable DC Electronic Load 6310 Series Operation & Programming Manual 4.2.6 Setting the Configuration ................. 4-11 4.2.7 Recalling Files..................4-15 4.2.8 Saving File/Default/Program..............4-15 4.2.9 Going To Local ..................4-15 4.2.10 Lock Operation..................4-16 4.2.11 Setting System and RS-232C Connection..........4-16 4.2.12...
  • Page 11 Programmable DC Electronic Load 6310 Series Operation & Programming Manual Channel Status....................8-3 Channel Summary ....................8-3 Questionable Status .................... 8-4 Output Queue ..................... 8-4 Standard Event Status ..................8-4 Status Byte Register ................... 8-5 Service Request Enable Register ............... 8-6 An Example of Use ....................
  • Page 12 www.valuetronics.com...
  • Page 13 PART 1 Operation www.valuetronics.com...
  • Page 14 www.valuetronics.com...
  • Page 15 This manual contains specifications, installation, operation, and programming instructions of 6314, 6312 electronic load mainframes as well as 63102, 63103, 63105 ... electronic load modules. Here “Load” means the electronic load modules of Chroma 6310 series while “Mainframe” the 6314, 6312 electronic load mainframes.
  • Page 16 Programmable DC Electronic Load 6310 Series Operation & Programming Manual Overview of Key Features A. Configuration • Flexible configuration using plug-in electronic load modules to mainframes. • Local operation on front panel keypad. • Remote control via GPIB or RS-232C interface.
  • Page 17 The specifications of DC current accuracy are tested after the input is applied for 30 seconds. The power of the load module of 6310 series is supplied from 6314/6312 mainframe. The typical temperature coefficient is 100ppm. The specifications of CR mode accuracy: v means 1/ohm.
  • Page 18 Programmable DC Electronic Load 6310 Series Operation & Programming Manual MODEL 63101 63105 200W 300W POWER CURRENT 0∼4A 0∼40A 0∼1A 0∼10A VOLTAGE 1∼80V 2.5∼500V 1.0V at 4A 1.0V at 40A 2.5V at 1A 2.5V at 10A MIN. OPERATING VOLTAGE (DC) CONSTANT CURRENT MODE 0∼4A...
  • Page 19 General Information MODEL 63102(100W*2) 63103 100W 300W POWER CURRENT 0∼2A 0∼20A 0∼6A 0∼60A VOLTAGE 1∼80V 1∼80V 1.0V at 2A 1.0V at 20A 1.0V at 6A 1.0V at 60A MIN. OPERATING VOLTAGE (DC) CONSTANT CURRENT MODE 0∼2A 0∼20A 0∼6A 0∼60A Range Resolution 0.5mA 1.5mA...
  • Page 20 Programmable DC Electronic Load 6310 Series Operation & Programming Manual MODEL 63107(30W,250W) 63106 250W 600W POWER CURRENT 0∼5A 0∼4A 0∼40A 0∼12A 0∼120A 1∼80V 1∼80V VOLTAGE 1.0V at 5A 1.0V at 4A 1.0V at 40A 1.0V at 12A 1.0V at 120A MIN.
  • Page 21 General Information MODEL 63108 63112 600W 120W 1200W POWER CURRENT 0∼2A 0∼20A 0∼24A 0∼240A VOLTAGE 2.5∼500V 1∼80V 2.5V at 2A 2.5V at 20A 1.0V at 24A 1.0V at 240A MIN. OPERATING VOLTAGE (DC) CONSTANT CURRENT MODE 0∼2A 0∼20A 0∼24A 0∼240A Range Resolution 0.5mA...
  • Page 22 www.valuetronics.com...
  • Page 23 Avoid touching the connector and the circuit board. The Chroma 6314 Mainframe has room for four single-width Loads (63102, 63103), or two double-width Loads (63106). Loads can be combined in the Mainframe in any order. The Chroma 6312 mainframe has room only for two single-width Loads or one double-width Load.
  • Page 24 Figure 2-1 Installing Modules in the Electronic Load WARNING If the Mainframe is not installed with all modules, the empty module position must be installed with the panel cover (Chroma part No: L00 000190) for safety and airflow. 2.3.1 Channel Number The channel number of a specific Load is determined by the location of that module in relation to the farthest left side of Mainframe.
  • Page 25 Installation Figure 2-2 Channel Number Example Installing the Mainframe The electronic Load can operate well within temperature range of 0 to 40 degree C. However, you must install the electronic Load in a location that has enough space at the top, four sides, and the rear of the unit for adequate air flowing through and escaping from the back.
  • Page 26 Programmable DC Electronic Load 6310 Series Operation & Programming Manual Figure 2-3 Line Voltage Switch 2.4.2 Turn-On Self-Test Before turning on the Load check the following things. The unit has been factory set to the correct line voltage. Refer to line voltage on the rear panel.
  • Page 27 63103 < --- Model Number 1.02 < --- F/W version Figure 2-4 Module Panel Self-test Display In case of failure return the Mainframe or Load module to Chroma sales or service office for repair. Application Connection 2.5.1 Load Connections WARNING To satisfy safety requirements, load wires must be heavy enough not to overheat while carrying the short-circuit output current of the device connected to the electronic Load.
  • Page 28 Programmable DC Electronic Load 6310 Series Operation & Programming Manual Figure 2-5 Load & Remote Sensing Connection 2.5.2 Remote Sensing Connections There are two sensing points for the electronic Load module. One is measurement at Load, terminal, and another is measurement at Vsense. The Load module will automatically switch to Vsense when Vsense terminals are connected to UUT, otherwise it will measure at Load terminals.
  • Page 29 Load to the controller or computer. The GPIB interface of the electronic load is optional. The 6310 series Remote Controller can control load through RS-232C port. Connect Remote Controller to the electronic Load before powering on. If you have not done thus, Load will shut down, or fuse for remote controller in Mainframe will be broken.
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  • Page 31 Operation Overview Introduction The Chroma 6314 and 6312 multiple electronic load mainframes are used for design, manufacturing, testing and quality assurance. The Mainframe contains four (two) slots for load modules. Load modules occupy either one or two slots. It depends on the power rating of the module.
  • Page 32 Programmable DC Electronic Load 6310 Series Operation & Programming Manual Figure 3-1 The Front Panel of Mainframe 6312 Rear Panel Description The rear panel of Mainframe includes an RS-232C connector, a GO/NG output port, an AC LINE socket, a fuse holder, an optional GPIB connector, and three cooling fans. Figure 3-2 shows the rear panel of Mainframe 6314.
  • Page 33 /dynamic, and load A/B or display selection R/L. Details of local operation are given in Chapter 4 Local Operation. Fundamentals of remote programming are described in the second part of this manual, Chroma 6310 Programming Manual. Modes of Operation There are three modes of operation: Constant Current (CC), Constant Resistance (CR), and Constant Voltage (CV).
  • Page 34 Programmable DC Electronic Load 6310 Series Operation & Programming Manual This ensures that there will be minimum overshoots in change of modes. The parameters in current, resistance or voltage mode can be programmed simply as the mode is presently selected.
  • Page 35 Operation Overview MODE SELECT Select Static Constant Current high range MODE SELECT Select Dynamic Constant Current low range CCDL MODE SELECT CCDH Select Dynamic Constant Current high range Select range by pressing ENTER key. The change of modes will affect the module, so will the change of range. Both cause the input to go through an off state.
  • Page 36 Programmable DC Electronic Load 6310 Series Operation & Programming Manual CCDL1:4A, CCDL2:2A, CCDL :1A/µS, CCDL : 1A/µS, CCDLT1:10mS, CCDLT2:10mS Current Load1 load2 Time 10mS 10mS 10mS 10mS Figure 3-5 Dynamic Current Waveform The STATic/DYNAmic functions can be also selected through...
  • Page 37 Operation Overview 3.5.2 Constant Resistance Mode Figure 3-6 Constant Resistance Mode In CR mode, the Load will sink a current linearly proportional to the input voltage in accordance with the programmed resistance. There is a double pole RC filter of input voltage, so high frequency parts will be removed.
  • Page 38 The voltage and current range of CR mode is high range. Load Synchronization The Chroma 6314/6312 multiple electronic load mainframes contain eight and four load channels respectively. The channel on/off or change of load timing is important. You can set module change synchronously through SYNC RUN in configuration setting. If a channel is set at SYNC RUN ON, it means that channel on/off or change of load level is synchronized with other Load modules.
  • Page 39 Operation Overview Measurements Each module measures current and voltage of the UUT. The sampling rate is about 12 mS. Voltage and current measurements are performed with a 15-bit resolution of full-scale ratings. Slew Rate & Minimum Transient Time Slew rate is defined as the change in current over time. A programmable slew rate allows a controlled transition from one load setting to another to minimize induced voltage drops on inductive power wiring, or control induced transients on a test device.
  • Page 40 Programmable DC Electronic Load 6310 Series Operation & Programming Manual Figure 3-8 Start Sinking Current (Von Non-Latch) Figure 3-9 Stop Sinking Current (Von Non-Latch) 3.10 Short On/Off Load module can simulate a short circuit at its input by setting the load on with full-scale current.
  • Page 41 Operation Overview Toggled on/off means pressing SHORT once to enable short circuit, and again to disable. Control by Key means pressing SHORT and holding it to enable short circuit, and releasing it to return to normal operation. The actual value of electronic short is dependent on the mode and range that are active when the short is turned on.
  • Page 42 Programmable DC Electronic Load 6310 Series Operation & Programming Manual The Load module will display oCP when overcurrent protection occurs. • Overpower The overpower protection circuit is set at a level slightly above the power range specified in the specifications of the Load. The overpower (OP) and power error (PE) status register bits are set when the OP condition occurs, and will remain set till they are reset.
  • Page 43 Operation Overview 3.14 Program The program feature is so powerful. It allows you to simulate various test conditions. There are ten programs in the electronic Load. Each program has ten sequences. The setting mapping of program sequence to file is one to one. It means that program 1, sequence 1 maps to file 1, and program 3, sequence 4 maps to file 24.
  • Page 44 www.valuetronics.com...
  • Page 45 Local Operation Local Operation Introduction This chapter describes how to operate the electronic load from the local panel in details. The descriptions include: Mainframe panel control, Module panel control and indicators. Local Operation of Load Mainframe In order to use the front panel keys to control the electronic load, local operation must be in effect.
  • Page 46 Programmable DC Electronic Load 6310 Series Operation & Programming Manual Figure 4-1 Front Panel of Mainframe Line switch Turn the ac power on/off. LCD display Display channel information normally. Channel indicator Indicate the active channel settings. Function keys CHAN To select a channel for settings.
  • Page 47 Local Operation function. CONF To select configuration data for editing. Entry keys ▲ ▼ They let you scroll through choices in a parameter list that is applied to a specific command. Parameter lists are circular. You can return to the starting position by pressing either of the keys continuously.
  • Page 48 Programmable DC Electronic Load 6310 Series Operation & Programming Manual Notice The eight operation modes of load module settings stored in the mainframe are independent. Changing any mode setting won’t affect others. Storing the settings to EEPROM (1-100) will store only one mode setting.
  • Page 49 Local Operation CCDLT1: 0.100mS CCDLT2: 0.200mS Notice If you press ENTER key, and the blinking data do not go to next, change configuration setting Enter Data Next to YES. Setting CR Values The CR values for the selected channel are programmed by pressing MODE, ▲ and ENTER keys.
  • Page 50 Programmable DC Electronic Load 6310 Series Operation & Programming Manual The following examples illustrate how to set CV values of Load module for model number 63103. Before observing the examples, select channel first. Select Range Press MODE and use ▲ or ▼ key to select CR followed by ENTER key.
  • Page 51 Local Operation Figure 4-3 CV Response Transfer Function (SLOW) 4.2.3 Setting the Program The electronic Load is able to select customized basic tests, and link them into a program test for automatic execution. The PROG key is used to select program, or recall program for local control. There are ten programs (1-10).
  • Page 52 Programmable DC Electronic Load 6310 Series Operation & Programming Manual Setting the Active Channels The LCD displays the active channels for the program to control. The LED channel indicators will be active if the channel is active. The channel can be active only when it exists and the mode of SYNC.
  • Page 53 Local Operation Setting the Sequence Mode There are three modes to control the method of sequence execution. SKIP : Skip the sequence. Load will not change input status. AUTO : Use ON/OFF time to control Load input on/off. When ON/OFF time passes, the Load will get to the next sequence automatically.
  • Page 54 Programmable DC Electronic Load 6310 Series Operation & Programming Manual ON/OFF It shows Load input status. It displays when MANUAL mode is active and waiting key input. PASS/FAIL It shows the test result compared with SPEC setting. When program is executed, the setting of sequence will recall files from EEPROM, and the SPEC function is always ON.
  • Page 55 Local Operation Press 5 , ENTER to set LOW level 5%. VOLTAGE SPEC. LOW Pcet: 5.0% The default setting of HIGH and LOW is 100%. The CENTER value is half of the range. For selection of the specifications set by Value or Percentage please refer to 4.2.6. 4.2.6 Setting the Configuration The electronic Load provides useful features such as Von point, Current limit, Sync run, etc.
  • Page 56 Programmable DC Electronic Load 6310 Series Operation & Programming Manual Figure 4-4 Von LATCH ON Current Waveform Figure 4-5 Von LATCH OFF Current Waveform Set CV mode CURR_LIMIT. This function will limit the current sinking of Load to protect UUT in CV mode. The default setting of current limit is the maximum Load current.
  • Page 57 Local Operation CV CURR_LIMIT CURRENT:20.000A Set sign of voltage for display. The electronic Load will show minus sign of the voltage if you select MINUS. It will not show any sign if you select PLUS. The default setting is PLUS. Selecting MINUS of SIGN OF VOLT. will occupy one digit. The displayed digits are four.
  • Page 58 Programmable DC Electronic Load 6310 Series Operation & Programming Manual AUTO LOADON 1:ON 2:OFF Select the load on mode of module if AUTO LOADON is ON. If LOAD is selected, the Load module will be active as DEFAULT setting. If PROG is selected, the module will be active as the program saved last time.
  • Page 59 Local Operation FRAME EXEC PROG. Version: 1.41 4.2.7 Recalling Files Press RECALL to recall files from 1 to 101. Files 1 to 100 are user data. File 101 is factor set state. After a file is recalled, the display will go to mode editor for you to edit or view the file. By pressing RECALL the display will show the file No.
  • Page 60 T×D Output Output Input Note: Pin 1 (+5V) is for 6310 series Remote Controller only. 4.2.12 Connecting the GO/NG Output Port The GO/NG output port on the rear panel of Mainframe is a 15-pin connector (DB-15, female connector). The GO/NG signals are TTL active low to indicate NG. They are defined as follows.
  • Page 61 Note: Pin 2, 4, 6, 10, 12, 14 are connected to GND. 4.2.13 Setting the GPIB Address Please refer to the second part of this manual, Chroma 6310 Programming Manual. GPIB address displays after RS-232C parameters in the system. You can use this feature to check GPIB address.
  • Page 62 Programmable DC Electronic Load 6310 Series Operation & Programming Manual 4.3.1 Local Operation of Single Channel/Module (Panel A) Figure 4-6 Single Channel/Module (Panel A) 7-segment LED Display It displays the measurement Voltage and Current. Each display has five digits. 7-segment Display Unit Indicators They indicate the 7-segment display measurement unit V and I.
  • Page 63 Local Operation will not respond if Load input is not enabled. The LOAD key controls the on/off of the Load module input. Its LED will be on when the Load input is enabled. Vsense Connectors These two connectors are Vsense measurement input. Refer to 2.5.2 for remote sense connections.
  • Page 64 Programmable DC Electronic Load 6310 Series Operation & Programming Manual 4.3.2 Local Operation of Double Channels/Module (Panel B) Figure 4-7 Double Channels/Module (Panel B) The double channels/module means that there are two channels for one module. Each channel of module is isolated from the other. One set of display/keypad for the module can control both channels.
  • Page 65 Local Operation when the check of any channel SPEC fails. It will be green when the check of both channels SPEC is all right. Keypad Indicators There are three LEDs indicating the keypad status. Each LED shows the key status. It has the same function as single channel/module.
  • Page 66 Programmable DC Electronic Load 6310 Series Operation & Programming Manual The Load can simulate a short circuit across the input. The short circuit can be enabled when SHORT is pressed, and Load input is active. When the input is shorted, the LED of short will be active.
  • Page 67 PART 2 Programming www.valuetronics.com...
  • Page 68 www.valuetronics.com...
  • Page 69 General Information for Programming Introduction This section describes how to program the 6310 series electronic load remotely from a GPIB controller or RS232C. The command set introduced here can be applied to all electronic loads of 6310 series, including 63101, 63102, 63103, etc. equipped with optional GPIB cards or standard equipment, RS232C.
  • Page 70 Programmable DC Electronic Load 6310 Series Operation & Programming Manual 0 1 1 0 0 28 1 1 1 0 0 0 1 1 0 1 29 1 1 1 0 1 0 1 1 1 0 30 1 1 1 1 0...
  • Page 71 General Information for Programming Device Clear The electronic load responds to the DCL, SDC Device Clear (DCL) and Selected Device Clear(SDC) interface commands. These cause the electronic load to clear any activity that may prevent it from receiving and executing a new command. DCL and SDC do not change any programmed settings.
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  • Page 73 If the keyword is incomplete, for example, “VOL” or “curre”, it will not be recognized. Numerical Data Formats The Chroma 6310 electronic load accepts the numerical data type listed in Table 6-1. Numeric data may be followed by a suffix that dimensions the data. A suffix may be www.valuetronics.com...
  • Page 74 Programmable DC Electronic Load 6310 Series Operation & Programming Manual preceded by a multiplier. The Chroma 6310 makes use of the suffixes listed in Table 6-2 and multipliers listed in Table 6-3. Symbol Description Example Digits with no decimal point. The decimal point is...
  • Page 75 Introduction to Programming Separators and Terminators In addition to keywords and parameters, GPIB program statements require the following: Data Separators: Data must be separated from the previous command keyword by a space. This is shown in examples as a space (CURR 3) and on diagrams by the letters SP inside a circle. Keyword Separators: Keywords (or headers) are separated by a colon (:), a semicolon (;), or both.
  • Page 76 Programmable DC Electronic Load 6310 Series Operation & Programming Manual (root):VOLT:L1: 30<nl> Starting a New Line returns to the Root. (root):SPEC:VOLT:H 30; :L 5;: (root):RES:L1 400; :RISE 1000;: www.valuetronics.com...
  • Page 77 Language Dictionary Language Dictionary Commands for operating the 6310 Electronic Load remotely are grouped into subsystems. Each command belonging to the same subsystem is arranged in alphabetic order. A syntax chart of the subsystem, which includes the commands belonging to the same group is given. Sub-systems are then ordered alphabetically according to their names in the following sections.
  • Page 78 Programmable DC Electronic Load 6310 Series Operation & Programming Manual <5> Operation Status Event register 2. Clear the Error Queue 3. If “Clear Status Command” immediately follows a program message terminator (<nl>), the “Output Queue” and the MAV bit are also cleared.
  • Page 79 6314 Model Always return zero 01.00 Revision level of the primary interference firmware customer’s version Return Example : CHROMA 6314,0,01.00,0 *OPC Operation Complete Command Type : Device Status Description : This command causes the interface to set the OPC bit (bit 0) of the Standard Event Status register when the Electronic Frame (6314) has completed all pending operations.
  • Page 80 Programmable DC Electronic Load 6310 Series Operation & Programming Manual Type : Device State Description This command forces an ABORt, *CLS, LOAD=PROT=CLE command. Syntax : *RST Parameters : nil *SAV Save Command Type : Device Status Description : This command stores the present state of the single electronic load and the states of all channels of the multiple load in a specified location in memory.
  • Page 81 Return Parameters : <NR1> Query Example : *STB? Return the contents of "Status Byte". Return Example : 20 Specific Commands The 6310 series products are equipped with the following specific GPIB commands. 7.2.1 ABORT Subsystem :ABORt ABORt Type : All Channel Description : Set all electronic loads as "OFF".
  • Page 82 Programmable DC Electronic Load 6310 Series Operation & Programming Manual 7.2.2 CHANNEL Subsystem < < < < CHANnel:[LOAD] Type : Channel Specific Description : Select a specific channel by which the coming channel-specific command will be received and executed. Syntax : CHANnel <NRf+>...
  • Page 83 : This query requests the module to identify itself. Query Syntax : ID? Return Parameters : <aard> Query Example : ID? String Information CHROMA Manufacturer 6310X Model Always return zero xx.xx Revision of the primary interface firmware Customer’s Version Return Example : CHROMA,63102,0,01.00,0...
  • Page 84 Programmable DC Electronic Load 6310 Series Operation & Programming Manual 7.2.3 CONFIGURE Subsystem :CONFigure :VOLTage <NRf> suffix <NR2> :RANGe <NRf> suffix <NR2> :LATCh ON/1 OFF/0 <NR1> :AUTO :LOAD ON/1 OFF/0 <NR1> :MODE LOAD/1 PROGRAM/0 <NR1> :SOUNd ON/1 OFF/0 <NR1> :REMote...
  • Page 85 Language Dictionary CONFigure:VOLTage:ON Type : Channel-Specific Description : Set voltage of sink current on. Syntax : CONFigure:VOLTage:ON <NRf> [suffix] Parameters : For valid voltage range refer to respective specification. Example : CONF:VOLT:ON 1 Set Von=1V. CONF:VOLT:ON 300mV Set Von=300mV. Query Syntax : CONFigure:VOLTage:ON? Return Parameters : <NR2>...
  • Page 86 Programmable DC Electronic Load 6310 Series Operation & Programming Manual CONFigure:AUTO:LOAD Type : All Channel Description : Set if the load module will do Auto Load On during power-on. Syntax : CONFigure:AUTO:LOAD ON CONFigure:AUTO:LOAD OFF Parameters : ON/1, OFF/0 Example...
  • Page 87 Language Dictionary Parameters : ON/1, OFF/0 Example : CONF:REM ON Set to remote control. CONFigure:SAVE Type : All Channel Description : Store the data of CONFigure into EEPROM. Syntax : CONFigure:SAVE Parameters : none Example : CONF:SAVE CONFigure:LOAD Type : All Channel Description : The value at the setting of load module as LOADON is the one changed by the rotary knob (UPDATED/1) or the original...
  • Page 88 Programmable DC Electronic Load 6310 Series Operation & Programming Manual 7.2.4 CURRENT Subsystem < < < < < < < < < < CURRent:STATic:L1/L2 Type : Channel-Specific Description : Set the Static Load Current of constant current mode. Syntax : CURRent:STATic:L1 <NRf+>...
  • Page 89 Language Dictionary Static Load L2. CURR:STAT:L1 MAX Set Constant Current = maximum value for Static Load L1. CURR:STAT:L2 MIN Set Constant Current = minimum value for Static Load L2. Query Syntax : CURRent:STATic:L1? CURRent:STATic:L2? CURRent:STATic:L1? MAX CURRent:STATic:L2? MIN Return Parameters : <NR2> [Unit=Ampere] Query Example : CURR:STAT:L1? Return set current value of the...
  • Page 90 Programmable DC Electronic Load 6310 Series Operation & Programming Manual CURRent:DYNamic:L2? MIN Return Parameters : <NR2> [Unit=Ampere] Query Example : CURR:DYN:L1? Return setting current in dynamic load L1. Return Example : 35.6 CURRent:DYNamic:RISE/FALL Type : Channel-Specific Description : Set the current slew rate of constant current dynamic mode.
  • Page 91 Language Dictionary 7.2.5 FETCH Subsystem < < < < < FETCh:VOLTage? Type : Channel-Specific Description : Return the real time voltage measured at the input of the load module. Query Syntax : FETCh:VOLTage? Return Parameters : <NR2> [Unit=Voltage] Query Example : FETC:VOLT? Return Example : 8.12...
  • Page 92 Programmable DC Electronic Load 6310 Series Operation & Programming Manual FETCh:ALLCurrent? Type : Channel-Independent Description : Return the real time current measured at the input of the all load module. Query Syntax : FETCh:ALLCurrent? Return Parameters : <aard> [Unit=Ampere] Query Example...
  • Page 93 Language Dictionary LOAD:[STATe] Type : Channel-Specific Description : The LOAD command makes the electronic load active/on or inactive/off. Syntax : LOAD:[STATe] ON LOAD:[STATe] OFF Parameters : ON/1, OFF/0 Example : LOAD ON Activate the electronic load. LOAD OFF Inactivate the electronic load. Query Syntax : LOAD:[STATe]? Return Parameters : <NR1>...
  • Page 94 Programmable DC Electronic Load 6310 Series Operation & Programming Manual Example : LOAD:PROT:CLE Query Syntax : LOAD:PROTection:CLEar? Return Parameters : <NR1> Bit Position 15 14 13 12 11 10 Condition 0 OT RV OP OV OC Bit Weight Query Example : LOAD:PROT? Return the electronic load status.
  • Page 95 Language Dictionary 7.2.7 MEASURE Subsystem < < < < < MEASure:VOLTage? Type : Channel-Specific Description : Return the voltage measured at the input of electronic load. Query Syntax : MEASure:VOLTage? Return Parameters : <NR2> [Unit=Voltge] Query Example : MEAS:VOLT? Return Example : 8.12 MEASure:CURRent? Type...
  • Page 96 Programmable DC Electronic Load 6310 Series Operation & Programming Manual MEASure:INPut Type : Channel-Specific Description : Select the input port of electronic load to measure the voltage. Syntax : MEASure:INPut? Parameters : UUT/1, LOAD/0 Example : MEAS:INP UUT MEAS:INP LOAD...
  • Page 97 Language Dictionary 7.2.8 MODE Subsystem < MODE Type : Channel-Specific Description : This command sets operational modes of the electronic load. Syntax : MODE CCL Set CC mode of low range. MODE CCH Set CC mode of high range. MODE CCDL Set CC dynamic mode of low range.
  • Page 98 Programmable DC Electronic Load 6310 Series Operation & Programming Manual 7.2.9 PROGRAM Subsystem < < < < < <NR1> < <NR2> < < < < < < < < < < 7-22 www.valuetronics.com...
  • Page 99 Language Dictionary PROGram:FILE Type : By program file Description : Set the program number. Syntax : PROGram:FILE <NRf+> Parameters : 1 to 10 Example : PROG:FILE 10 Query Syntax : PROGram:FILE? Return the active program number. Return Parameters : <NR1> Query Example : PROG:FILE? Return Example...
  • Page 100 Programmable DC Electronic Load 6310 Series Operation & Programming Manual Example : PROG:SEQ:SHOR:CHAN 3 Query Syntax : PROGram:SEQuence:SHORt:CHANnel? Return Parameter : <NR1> Query Example : PROG:SEQ:SHOR:CHAN? Return Example PROGram:SEQuence:SHORt:TIME Type : By program file Description : Set the short time of PROGRAM file SEQuence.
  • Page 101 Language Dictionary PROGram:ONTime Type : By program file Description : Set the load on time of program file. Syntax : PROGram:ONTime <NRf> Parameters : For valid value range refer to respective specification. Example : PROG:ONT 10 PROG:ONT 100mS Query Syntax : PROGram:ONTime? Return Parameters : <NR2>...
  • Page 102 Programmable DC Electronic Load 6310 Series Operation & Programming Manual PROGram:SAVE Type : By program file Description : Save the setting of program. Syntax : PROGram:SAVE Parameters : NONE Example : PROG:SAVE PROGram:RUN Type: By program file Description: Execute the program...
  • Page 103 Language Dictionary 7.2.10 RESISTANCE Subsystem < < < < RESistance:L1/L2 Type : Channel-Specific Description : Set static resistance level of constant resistance mode. Syntax : RESistance:L1 <NRf+> [suffix] RESistance:L2 <NRf+> [suffix] Parameters : For valid value range refer to respective specification. Example : RES:L1 20 OHM Set constant resistance = 20 ohm...
  • Page 104 Programmable DC Electronic Load 6310 Series Operation & Programming Manual Example : RES:RISE 2.5 Set CR rise slew rate as 2.5A/µS. RES:FALL 1A/µS Set CR fall slew rate as 1A/µS. RES:RISE MAX Set CR rise slew rate as the maximum programmable value.
  • Page 105 Language Dictionary SHOW:DISPlay LRI Parameters : L, R, LRV, LRI. Example : SHOW:DISP L Display the voltage and current values of channel L. SHOW:DISP R Display the voltage and current values of channel R. SHOW:DISP LRV Display the voltage value of channel L and channel R.
  • Page 106 Programmable DC Electronic Load 6310 Series Operation & Programming Manual Return Parameters : <NR1> Return Example SPECification:VOLTage? Type : Channel-Specific Description : Request GO-NG result reference to voltage specification. Query Syntax : SPECification:VOLTage? Query Example : SPEC:VOLT? Returns voltage GO-NG result to CC and CR modes.
  • Page 107 Language Dictionary SPECification:CURRent:L SPECification:CURRent:C Parameters : For valid value range refer to respective specification. Example : SPEC:CURR:H <NRf+> [suffix] SPEC:CURR:L <NRf+> [suffix] SPEC:CURR:C <NRf+> [suffix] Query Syntax : SPECification:CURR:H? SPECification:CURR:L? SPECification:CURR:C? Query Example : SPEC:CURR:H? Return Parameters : <NR2> [Unit=Current] Return Example : 4.75 SPECification:TEST...
  • Page 108 Programmable DC Electronic Load 6310 Series Operation & Programming Manual 7.2.14 STATUS Subsystem < < < < < STATus:CHANnel:CONDition Type : Channel-Specific Description : Return real time channel status. Query Syntax : STATus:CHANnel:CONDition? Return Parameters : <NR1> Bit Configuration of Channel Status register...
  • Page 109 Language Dictionary STATus:CHANnel:ENABle Type : Channel-Specific Description : Masks for selecting which bits in the Event register are allowed to be summed into the corresponding channel bit of the Channel Summary Event register. Syntax : STATus:CHANnel:ENABle Parameters : 0 ~ 65535 Example : STAT:CHAN:ENABl 24 Query Syntax...
  • Page 110 Programmable DC Electronic Load 6310 Series Operation & Programming Manual Bit Position 7 Channel Bit Weight 128 64 32 16 8 Example : STAT:CSUM:ENAB 3 Query Syntax : STATus:CSUMmary:ENABle? Return Parameters : <NR1> Query Example : STAT:CSUM:ENAB? Return the setting of Channel Summary Enable register.
  • Page 111 Language Dictionary Bit Position 15 14 13 12 11 10 9 Condition 0 0 0 TE RV PE VE CE Bit Weight 16 8 Example : STAT:QUES:ENAB 24 Query Syntax : STATus:QUEStionable:ENABle? Return Parameters : <NR1> Query Example : STAT:QUES:ENAB Return the setting of the Status Questionable Enable register.
  • Page 112 Programmable DC Electronic Load 6310 Series Operation & Programming Manual 7.2.15 VOLTAGE Subsystem < < < < < VOLTage:L1/L2 Type : Channel-Specific Description : Sets voltage of static load during constant voltage mode. Syntax : VOLTage:L1 VOLTage:L2 Parameters : For valid value range refer to respective specification.
  • Page 113 Language Dictionary Description : Set the current limit of constant voltage mode. Syntax : VOLTage:CURRent Parameters : For valid value range refer to respective specification. Example : VOLT:CURR 3 Set loading current limit as 3A during constant voltage mode. VOLT:CURR MAX Set loading current limit as the maximum value during constant voltage mode.
  • Page 114 www.valuetronics.com...
  • Page 115 Status Reporting Introduction This chapter discusses the status data structure of the Chroma 6310 series electronic load as shown in Figure 8-1(on the next page). The standard registers, such as the Event Status register group, the Output Queue, the Status Byte and Service Request Enable registers perform standard GPIB functions and are defined in IEEE-488.2 Standard Digital...
  • Page 116 Programmable DC Electronic Load 6310 Series Operation & Programming Manual CHANNEL STATUS (ONE CHANNEL) CONDITION PTR/NTR EVENT ENABLE CHANNEL SUMMARY EVENT ENABLE CHAN 1 N.U. 5-15 CHAN 2 CHAN 3 CHAN 4 CHAN 5 CHAN 6 CHAN 7 CHAN 8...
  • Page 117 Status Reporting Mnemonic Bit Value Meaning Overcurrent. When an overcurrent condition has occurred on a channel, Bit 0 is set and remains set until the overcurrent condition is removed and LOAD:PROT:CLE is programmed. Overvoltage. When an overvoltage condition has occurred on a channel, Bit 1 is set and remains set until the overvoltage condition is removed and LOAD:PROT:CLE is programmed.
  • Page 118 Programmable DC Electronic Load 6310 Series Operation & Programming Manual (CSUM bit) in the Status Byte register. Questionable Status The Questionable Status registers offer you one or more questionable status conditions, which indicate certain errors or faults have occurred on at least one channel.
  • Page 119 Status Reporting Operation Complete. This event bit generated is responding to the *OPC command. It indicates that the device has completed all selected pending operations. Query Error. The output queue was read when no data were present or the data in the queue were lost. Device Dependent Error.
  • Page 120 Programmable DC Electronic Load 6310 Series Operation & Programming Manual Service Request Enable Register The Service Request Enable register can be programmed to specify which bit in the Status Byte register will generate service requests. www.valuetronics.com...
  • Page 121 An Example of Use An Example of Use In this chapter a basic example of controlling electronic load are provided for use of GPIB. The GPIB used here is made by NI (National Instruments). Examples: #include “dec1.h” #include <stdio.h> #include <stdlib.h> #include <sring.h>...
  • Page 122 Programmable DC Electronic Load 6310 Series Operation & Programming Manual cmd[3] = LA + pad; ibcmd( bd, cmd, 4 ); ibwrt ( bd, cmdStr, _fstrlen( cmdStr ) ); ibcmd( bd, cmd, 2 ); static char rxBuf[ 64 ] static void Niread( int pad, char *queryStr ) char cmd[ 4 ];...
  • Page 123 An Example of Use Niread( 8, “LOAD OFF” ); // Stop sinking current. ibsic ( bd ); ibon1( bd, 0 ); ibsre ( bd, 0 ); For the above example please refer to Chapter 3, and add corresponding commands according to setting and control.
  • Page 124 Programmable DC Electronic Load 6310 Series Operation & Programming Manual www.valuetronics.com...

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