ITech IT-M3300 Series User Manual
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ITech IT-M3300 Series User Manual

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Regenerative DC Electronic
Load
IT-M3300 Series User Manual
Model: IT-M3300 Series
Version: V1.0/04,2020

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Summary of Contents for ITech IT-M3300 Series

  • Page 1 Regenerative DC Electronic Load IT-M3300 Series User Manual Model: IT-M3300 Series Version: V1.0/04,2020...
  • Page 2 CAUTION sign until the in- pose. ITECH shall not be held liable Manual Part Number dicated conditions are for errors or for incidental or indirect fully understood and met.

  • Page 3: Warranty

    Warranty ITECH warrants that the product will be free from defects in material and work- manship under normal use for a period of one (1) year from the date of delivery (except those described in the Limitation of Warranty below).

  • Page 4: Safety Symbols

    Failure to comply with these precautions or specific warn- ings elsewhere in this manual will constitute a default under safety standards of design, manufacture and intended use of the instrument. ITECH assumes no li- ability for the customer’s failure to comply with these precautions.
  • Page 5 This instrument is used for industrial purposes, do not apply this product to IT power supply system. • Never use the instrument with a life-support system or any other equip- ment subject to safety requirements. Copyright © Itech Electronic Co., Ltd.

  • Page 6: Environmental Conditions

    Make sure the vent hole is always unblocked. Environmental Conditions The instrument is designed for indoor use and an area with low condensation. The table below shows the general environmental requirements for the instrument. Copyright © Itech Electronic Co., Ltd.

  • Page 7: Regulation Tag

    The service life of the product is 10 years. The product can be used safely within the environmental protection period; otherwise, the product should be put into the recycling system. Copyright © Itech Electronic Co., Ltd.

  • Page 8: Waste Electrical And Electronic Equipment (Weee) Directive

    According to the equipment classifi- cation in Annex I of the WEEE direc- tive, this instrument belongs to the “Monitoring” product. If you want to return the unnecessary instrument, please contact the near- est sales office of ITECH. Copyright © Itech Electronic Co., Ltd.

  • Page 9: Compliance Information

    2. Connection of the instrument to a test object may produce radiations beyond the specified limit. 3. Use high-performance shielded interface cable to ensure conformity with the EMC standards listed above. Safety Standard IEC 61010-1:2010+A1:2016 Copyright © Itech Electronic Co., Ltd.

  • Page 10: Table Of Contents

    6 Protection Function ......................59 6.1 Set Over-Current Protection (OCP) ............... 59 6.2 Set Over-power Protection ..................60 6.3 Set Under-Voltage Protection ................61 6.4 Sense abnormal protection function ..............62 6.5 Over-Temperature Protection................63 Copyright © Itech Electronic Co., Ltd. VIII...
  • Page 11 9 Routine Maintenance ....................... 89 9.1 Instrument Self-Test....................89 9.2 Cleaning and Maintenance ..................89 9.3 Information Reference ................... 90 9.4 Contact of ITECH Engineers ................. 91 9.5 Return for Repair....................92 10 Technical Specification ....................94 10.1 IT-M3312......................94 10.2 IT-M3322......................

  • Page 12: Quick Reference

    Bidirectional energy flow between DUT and grid • 8 operating mode: CC/CV/CP/CR/CC+CV/CV+CR/CR+CC/CC+CV+CP • Programmable current rise and fall time • Battery discharge test • Support Von function • Various protection such as OCP,OPP,UVP System features: Copyright © Itech Electronic Co., Ltd.

  • Page 13: Front-Panel Overview

    Turn the synchronized operation feature on or off. When lit, indicates that the instrument is in synchronous. • In remote control, press [Shift]+[Link] keys to switch the instrument to local control mode. Power On/Off Turns instrument on or off. switch Copyright © Itech Electronic Co., Ltd.

  • Page 14: Keyboard Introduction

    The keyboard introduction of this series power supplies is shown as follows. Keys Description [V-set] Set the voltage value when the instrument in single mode, pressing the key also can switch to CV mode. [I-set] Set the current value Copyright © Itech Electronic Co., Ltd.
  • Page 15 Enter the Function menu. Used to set the list function, Battery test function.. [Shift]+[P-set](System) Enter the system menu. Used to set the system parameters. [Shift]+[R-set](Protect) Enter the protection menu. Used to set the protection parameters. Copyright © Itech Electronic Co., Ltd.

  • Page 16: Rear Panel Introduction

    Optional Optional interfaces: (Plastic plugs are inserted by expansion slot default when the user does not purchase the interface.) The optional interface as follows: • USB/LAN • GPIB • RS-232/CAN Copyright © Itech Electronic Co., Ltd.

  • Page 17: Home-Screen Overview

    Displays the present voltage setting value. In this value area, displays setting value according to present mode and is different under different mode. • Output status OFF: Output is disabled. • Displays the present output status when the output is enabled. Copyright © Itech Electronic Co., Ltd.

  • Page 18: Configuration Menu Reference

    Set the Von value Von Mode Set Von function Latch Latch mode Living Living mode On Delay Set the delay time to turn on the input. Off Delay Set the delay time to turn off the input. Copyright © Itech Electronic Co., Ltd.

  • Page 19: System Menu Reference

    When insert IT-E1206 communication board into USB+LAN expansion slot, the menu displays this information. USB communication interface. USB-TMC protocol Virtual serial port LAN communication interface. Lan Info View the LAN information. Status IP Mode Status IP Addr Sub Net Copyright © Itech Electronic Co., Ltd.
  • Page 20 Ping: Ping service state Telnet: telnet service state. Web: web service state. VXI-11: VXI-11 service state. Raw Socket: RAWSocket service state. Select whether to reset the LAN to the default settings or not. Restore Copyright © Itech Electronic Co., Ltd.
  • Page 21 When insert IT-E1209 communication board into expansion slot, the menu displays this information. Set the instruments to parallel operation mode. Parallel Single Set the instrument to single mode. Slave Set the instrument to slave mode. Copyright © Itech Electronic Co., Ltd.
  • Page 22 Remote interface trigger command, like *TRG Ext-Meter Set to the UUT temperature and total regenerative electric energy are Disp displayed on home screen. display on home screen. do not display on home screen. Copyright © Itech Electronic Co., Ltd.

  • Page 23: Models And Options

    Display the instrument running time. The alias of the instrument, which can be modified by the user to note Instr Alias information 1.8 Models and Options This series models include: Voltage(V) Current(A) Power(W) Model IT-M3312 IT-M3322 Copyright © Itech Electronic Co., Ltd.
  • Page 24 • Cabinet installation The IT-M series instruments can be mounted on a standard 19-inch cabinet. ITECH has prepared a special bracket for the user as a mounting kit. • Anti-reverse connection module The IT-M series instruments support the IT-E118 anti-reverse connection module to realize DC reverse connection protection, surge suppress, and sense reverse connection protection.
  • Page 25 485 to enable interface remote operation or external analog function, this option is the right choice. USB communication IT-E1209 When the user Optional interface needs to use USB interface to enable remote operation, Copyright © Itech Electronic Co., Ltd.
  • Page 26 After changing the communication card and analog card, you must re-start the instrument. It takes about 30 seconds for the instrument to automatically update the communication board before it is ready for use. Copyright © Itech Electronic Co., Ltd.

  • Page 27: Inspection And Installation

    System Bus interfaces between Multiple connection instruments in parallel operation, cables multichannel operation and synchronized operation features, this option is the right choice. Ex-Factory It is the test report of the instrument before Test Report delivery. Copyright © Itech Electronic Co., Ltd.

  • Page 28: Instrument Size Introduction

    The detailed dimension drawings of theIT-M3300series are as follows: (Unit: mm, allowable deviation value: ±1mm) 2.3 Rack Mounting This instrument can be installed on standard 19–inch rack. ITECH provides user with optional mount kit. The detailed information please refer to 1.8 Models Options, and the detailed operation please refer to the user manual of your purchased mount kit.

  • Page 29: Connecting The Power Cord

    The standard power cord types are as follows. Please select appropriate power cords appropriate to local voltage based on the specifications of power cords below. If purchased model fails to meet local voltage requirements, please contact distributor or factory for change. Copyright © Itech Electronic Co., Ltd.
  • Page 30 1. Make sure that the front-panel power switch is in the OFF position. 2. Connect the female end of the supplied line cord to the AC receptacle on the rear panel. 3. Connect the plug of the power cord to a grounded AC outlet. Copyright © Itech Electronic Co., Ltd.

  • Page 31: Connecting The Device Under Test (Dut)

    ON and cathode OFF are prohibited. • If you need to pull out the green output terminal, please lift it up and pull it out, otherwise it will damage the instrument. Copyright © Itech Electronic Co., Ltd.
  • Page 32 When the DUT consumes large current or the wires are too long, there is a voltage drop on the wires between DUT and output terminals of the power system. To maximize measurement accuracy, the power system provides the Copyright © Itech Electronic Co., Ltd.
  • Page 33 7. Power on the instrument. 8. Turn the sense function on. a. Press[Shift]+[P-Set](System) to enter into the system menu interface. b. Rotate the knob to select Sense and press [Enter] key to make the parameter in modification. Copyright © Itech Electronic Co., Ltd.

  • Page 34: Connect The Communication Interface

    2. Install the purchased communication card. Taking the LAN+USB interface card as an example, push the card into the slot and secure with the screws Copyright © Itech Electronic Co., Ltd.

  • Page 35: Usb Interface

    Take the USB+LAN communication card box as an example. If you install USB only, please refer to the actual interface position. 1. Refer to the USB connection diagram, connect the instrument and the computer using a cable with two USB interfaces (each end). Copyright © Itech Electronic Co., Ltd.

  • Page 36: Gpib Interface

    VCP: virtual serial port. Select this type, you need to install the corresponding driver (download from the ITECH website or contact ITECH agent). The device manager of PC will display ‘Prolific USB-to- Serial COM Port’ after installing. 6. After finishing the setting, press[Esc] to exit.

  • Page 37: Lan Interface

    PC, and the IP address should be at the same network segment with the PC’s IP address. • When the instrument and computer are connected to the router, an independent IP address must be assigned for the instrument. Copyright © Itech Electronic Co., Ltd.
  • Page 38 ♦ Position 2: When flashing, it indicates that the LAN port is receiving or sending a message. – Sub Net: This value is used to enable the instrument to determine if a client IP address is on the same local subnet. The same numbering Copyright © Itech Electronic Co., Ltd.
  • Page 39 When you set the IP address and the Gateway, if present display is one-digit as 192.168.200.1, you can press right and left keys to display 001 and modify the 1. 6. After setting, press [Esc] to exit. Copyright © Itech Electronic Co., Ltd.
  • Page 40 The first displayed menu item Lan Info Info is to view the LAN interface information. 4. Press [Enter] key to confirm. 5. Use left and right keys or rotate the knob to view the LAN interface 1.7 系统菜单表格 information. Refer to for more information. Copyright © Itech Electronic Co., Ltd.
  • Page 41 You must enable Web service if you wish to remotely control your instrument us- ing its built-in Web interface. Refer to LAN services setting for the detailed oper- ation procedures. • Up to six simultaneous connections are allowed. With additional connections, performance will be reduced. Copyright © Itech Electronic Co., Ltd.
  • Page 42 LAN Configuration: reconfigure the LAN parameters; • Security: change the password and control access to the Web interface; • Manual: go to the ITECH official website and view or download the relevant documents. • Logout: logout the Web interface. Copyright © Itech Electronic Co., Ltd.

  • Page 43: Interface

    The instruments allow up to six simultaneous socket connections to be made. ITECH instruments have SCPI socket services, which can be used to send and receive SCPI commands, queries, and query responses. All commands must be terminated with a newline for the message to be parsed. All query responses will also be terminated with a newline.
  • Page 44 5. Press [Esc] to exit. RS-232 Troubleshooting If you meet some problems when communicating with PC by RS-232 interface, please check the following items: • PC and power supply must have the same baud rate. Copyright © Itech Electronic Co., Ltd.

  • Page 45: Interface

    The user needs to configure the RS-485 interface parameters in the system menu before using the remote control. The RS-485 interface parameters are as follows. Name Description Baud rate Select the baud rate from the following options: 4800/9600/ 19200/38400/57600/115200 Data Bit 8(fixed) Copyright © Itech Electronic Co., Ltd.

  • Page 46: Can Interface

    CAN interface converter to connect to your computer according to the actual situation. Take the CAN to USB interface device as an example. Definition of CAN Pins The definition of CAN pins are as follows. Description TXD，transmit data RXD，receive data CAN_H IT-E1207 CAN_L Copyright © Itech Electronic Co., Ltd.
  • Page 47 The interface cable is correctly connected (CAN_H to CAN_H, CAN_L to CAN_L) • If the communication signal is poor or unstable, it is recommended to connect a 120 Ω terminating resistance. – The connection diagram of a single device is as below. Copyright © Itech Electronic Co., Ltd.
  • Page 48 Inspection and Installation – The connection diagram of multiple devices is as below. Copyright © Itech Electronic Co., Ltd.

  • Page 49: Getting Started

    The detachable power cord may be used as an emergency disconnecting device. Removing the power cord will disconnect AC input power to the unit. Copyright © Itech Electronic Co., Ltd.
  • Page 50 Wait until the power is turned off and then start again. If the problem still cannot be solved after restarting, please contact the ITECH engineer. Common error messages are shown in the following table:...

  • Page 51: Set Input Parameters

    Or, press the knob to set parameters. The pressing knob is introduced below. • Rotate the knob to set the data value at the cursor. The set value is in- creased with crosswise rotation, and decreased with counterclockwise Copyright © Itech Electronic Co., Ltd.

  • Page 52: Use The Front Panel Menu

    After entering the menu interface, the screen displays the optional menu. Rotate the knob or press left or right keys to view the menu items. When the number in front of the menu item is blinking, indicates this item is selected Copyright © Itech Electronic Co., Ltd.

  • Page 53: Output On/Off Control

    And displays the operating status such as CC/CV and so on. If the [On/Off] key light is off, indicates that the input is turned off. The VFD displays that the power supply state is OFF. Copyright © Itech Electronic Co., Ltd.

  • Page 54: Programming The Input

    CC mode and set the input current value. • When select a complex mode in Config menu, if you press [V-set]/[I-set]/[R-set]/[P-set] keys on front panel, the present mode can not be changed. Under this mode, the corresponding setting keys light Copyright © Itech Electronic Co., Ltd.

  • Page 55: Single Operation Mode

    Under CR mode, the electronic load is equivalent to a constant resistance and will give linear change of current with input voltage change. As shown in following figure. The CR mode ensures that the UUT voltage outputs remain stable when the load varies. Copyright © Itech Electronic Co., Ltd.

  • Page 56: Complex Operation Mode

    • The CV+CR mode can be applied to the LED simulation and test the LED power supply to get the LED current ripple parameters. Copyright © Itech Electronic Co., Ltd.

  • Page 57: Battery Simulation Mode

    4.4 Battery simulation mode This series load comes with a battery simulation mode, which is applicable to discharge function test for the charger. The user can directly select this mode in the configuration menu. Copyright © Itech Electronic Co., Ltd.

  • Page 58: Set I-Rise / I-Fall Slope

    You can set the input-on/input-off delay time within the range from 0 second to 10 seconds. • On Delay is from the time that a command to turn on the input is received until the input actually turns on. Copyright © Itech Electronic Co., Ltd.

  • Page 59: Enable The Input

    When [On/Off] key is lit, indicates the input is disabled, the VFD displays load state is OFF. Except front panel and SCPI OUTPut ON /OUTPut OFF, you also can control the On/Off state through the 8th–pin of analog interface ( optional ) . Copyright © Itech Electronic Co., Ltd.

  • Page 60: Advanced Function

    Select the number of edited List file. List=1/ List Setup Edit the attribute parameters of List file Mode Set the operation mode for list program. • CC: constant current mode; • CV: constant voltage mode. Copyright © Itech Electronic Co., Ltd.
  • Page 61 Delete all steps. Copy File Copy list file1 to file2. 1 to 2 During List editing, the instrument would automatically return to the main interface if there is no operation for a long period. Operation Steps: Copyright © Itech Electronic Co., Ltd.
  • Page 62 Taking the CV mode as an example, the interface display is as follows. The displayed voltage and current are different under different modes. 1:Mode= CV 2:End State= Last 3:Repeat= 01 Copyright © Itech Electronic Co., Ltd.
  • Page 63 1. In the List function setting interface, select “Recall”, and press [Enter] key for confirmation. 2. Rotate the knob to set the number of List file to be recalled. Press [Enter] key to enter the viewing interface. Copyright © Itech Electronic Co., Ltd.
  • Page 64 4. Conduct trigger based on the trigger mode set in the system menu, such as front panel trigger mode. Press [Shift]+[On/Off] (Trigger) key for triggering, and the instrument would output based on set sequence. 12.000V 5.0000A 100.00W Copyright © Itech Electronic Co., Ltd.

  • Page 65: Battery Discharging Test Function

    Edit the battery discharging test file. Edit Edit file=1/ Select desired battery test file number. Set the discharging current. Disch I Disch Set the discharging time. Time Cut Off Set the cut off voltage. Copyright © Itech Electronic Co., Ltd.
  • Page 66 3. Setting the parameters in turn. Press [Enter] to confirm. 1：Disch I = 1.00A 2：Disch Time = 60S 3：Cut Off V = 8.00V 4：Cut Off I = 5.00A 5: Cut Off Q = 10AH Copyright © Itech Electronic Co., Ltd.
  • Page 67 The user can press Stop to stop existing test and turn off the List function. Or, press Reset to restart a new test. Copyright © Itech Electronic Co., Ltd.

  • Page 68: Short-Circuit Analog Function

    When VON LIVING function is started, the load starts load test only when the power voltage rises and is higher than Von Point loading voltage. When the power voltage drops and is lower than Von Point unloading voltage, the load will unload. Copyright © Itech Electronic Co., Ltd.
  • Page 69 3. Use knob and left/right keys to set the voltage level of VON, press [Enter] to confirm. 4. Rotate the knob to select Von Mode and [Enter] to confirm. 5. Rotate the knob to select Living or Latch and press [Enter] to confirm. 6. Press [Esc] to exit. Copyright © Itech Electronic Co., Ltd.

  • Page 70: Protection Function

    Specifying an OCP delay lets the OCP circuit ignore these momentary changes during the specified delay period. Once the OCP delay time has expired and the over-current condition persists, the input will shut down. Copyright © Itech Electronic Co., Ltd.

  • Page 71: Set Over-Power Protection

    In most cases these momentary conditions would not be considered an over-power protection fault, and having an OPP condition disable the output when they occur would be a Copyright © Itech Electronic Co., Ltd.

  • Page 72: Set Under-Voltage Protection

    5. Rotate the knob to set the Delay time, press [Enter] to confirm. 6. Press [Esc] to exit. Delay time You can specify an UVP delay to prevent momentary output settings, DUT and status changes from tripping the over-power protection. In most cases these Copyright © Itech Electronic Co., Ltd.

  • Page 73: Sense Abnormal Protection Function

    The Sense Measure function is enabled in the Sestem menu. • On/Off is turned on; • The voltage difference between the local voltage measured by the instru- ment and the remote voltage exceeds the specification value internally set by the instrument; Copyright © Itech Electronic Co., Ltd.

  • Page 74: Over-Temperature Protection

    To clear the OTP and return to normal operation, firstly remove the conditions that caused the protection fault. Press [Esc] key (or send the command PROTection:CLEar) to clear the protection status. The prompt displayed in front panel is cleared and the instrument exits OTP status. Copyright © Itech Electronic Co., Ltd.

  • Page 75: System-Related Functions

    Under CC priority mode: voltage setting value, current setting value and power setting value. Config menu Priority mode Output Resistance The saved settings in load mode include the following parameters . Copyright © Itech Electronic Co., Ltd.
  • Page 76 2. Rotate the knob to enter the number 1 to 10 and set the storage location, press [Enter] to save. Recall Operation 1. Press the composite keys [Shift]+ (Recall) or long press to enter the recall parameter interface. Recall File = 1 12.000V 10.000A description: Copyright © Itech Electronic Co., Ltd.

  • Page 77: Local/Remote Mode Switch

    2. Rotate the knob to select Beep and press [Enter] to confirm. 3. Rotate the knob to select On or Off and press [Enter] to confirm. 4. Press [Esc] to exit menu interface. At this point, the beeper status takes effect immediately. Copyright © Itech Electronic Co., Ltd.

  • Page 78: Set The Power-On State

    4. Press the [Esc] key to exit. 7.4.4 Set the Communication Information This menu item is used to set the communication information between instrument and PC. There is no standard communication interfaces for this Copyright © Itech Electronic Co., Ltd.

  • Page 79: Select Trigger Source

    2. Rotate the knob to select System Reset and press [Enter]. 3. Rotate the knob to select Yes or No and press [Enter] to confrim. • No: default value, indicates cancels this menu setting. • Yes: indicates the instrument restores the factory default settings. Copyright © Itech Electronic Co., Ltd.
  • Page 80 Parallel Slave Group Parallel Master Group Parallel Master Total Link Mode On/Off Link Track Reference Ext Prog Chan Number Protect Menu OCP Mode OCP Level OCP Dealy 10.00S OPP Mode OPP Level OPP Delay 10.00S Copyright © Itech Electronic Co., Ltd.

  • Page 81: Observe The Dut Temperature And Total Historical Regenerative Power

    1. Press composite keys [Shift]+[P-Set](System) to enter the System menu. 2. Rotate the knob to select System Info and press [Enter] to confirm. 3. Rotate the knob and view the system information. Name Description Model The instrument model ArmVer The control board version Copyright © Itech Electronic Co., Ltd.

  • Page 82: Measuring The Dut Temperature

    • Re-Energy: the regenerative power information. • AHour: the capacity information of the present discharge or charge test, which is also cleared when the battery test mode or battery simulation mode is turned on. Copyright © Itech Electronic Co., Ltd.

  • Page 83: Uut Over-Temperature Protection

    When UUT OTP protection occurs, the instrument responds as follows: • Instrument output is off; • The buzzer sounds intermittently; • The interface displays “UUT Over Temperature” and flashes; • Status register, the UUT OT status bit is set to 1 Copyright © Itech Electronic Co., Ltd.

  • Page 84: External Analog Function (Optional)

    When the programmed signal frequency or amplitude ex- ceeds the output capacity, the instrument will automatically limit the output amplitude. When the input voltage exceeds 10V, the set value will be limited in the maximum rated value range. Copyright © Itech Electronic Co., Ltd.
  • Page 85 Under normal loading state, 5V is out- put; under non-loading state, 0V is output. Digital Indicate the instrument’s working output state: Under the CC mode, 5V is out- put; otherwise, 0V is output. Copyright © Itech Electronic Co., Ltd.
  • Page 86 0V is input, do not clear fault. 21, 24 Ground- Grounding of all digital signals, includ- ing pins: 8 (On/Off_In), 9 (Power), 10 (CC), 11 (ALM), 20 (ALM_Clear), 22 (CV), 23 (On/Off) Copyright © Itech Electronic Co., Ltd.
  • Page 87 (0V ~ 10V) can be used to monitor the existing voltage or current between 0 and full range. During parallel operation, the master unit analog interface can be used to program or monitor the voltage and current for programming of 0V ~ Copyright © Itech Electronic Co., Ltd.
  • Page 88 Voltage and current monitoring Through the analog interface, the existing output voltage/current or input voltage/current can be monitored. Connect a digital voltmeter between pin 14 (Vol_MON), pin 16 (Cur_MOM) and ground wire 3/4/5/6 (AGND) of the Copyright © Itech Electronic Co., Ltd.
  • Page 89 0V ~ 10V between the voltage setting pin 1 (Vol_Pro), current setting pin 17 (Cur/Vol_Pro) and ground wire 3/4/5/6 (AGND). Other analog input pins should also be connected correctly. The wiring method is shown in the figure below. Copyright © Itech Electronic Co., Ltd.

  • Page 90: Multi-Machine Operation

    Multi-channel systems can be composed of single units of the same series and different models. The following is a general introduction to these three functions: • Multi-channel operation: Copyright © Itech Electronic Co., Ltd.

  • Page 91: Multi-Channel Function

    Up to 16 * 16 channels, each instrument in the control system can be controlled independently in software, and each channel can be operated completely independently. Copyright © Itech Electronic Co., Ltd.
  • Page 92 0–16. Press [Enter] to confirm. d. Repeat steps a through c to set the channel number for other instrument. 2. Connect the instruments according to the above diagram. Please disconnect the power before wiring. Copyright © Itech Electronic Co., Ltd.

  • Page 93: Parallel Function (Parallel)

    In the parallel system, the master unit executes all features, but you need to connect all units output terminals to DUT due to the output terminals of a single unit can not deliver higher rated current. Copyright © Itech Electronic Co., Ltd.
  • Page 94 Use left and right keys or rotate the knob to select Parallel and press [Enter] key to make the parameter in modification. c. Rotate the knob to select Slave and press [Enter] key to confirm. d. Set Slave group to A and press [Enter] key to confirm. Copyright © Itech Electronic Co., Ltd.
  • Page 95 Rotate the knob to select Master and press [Enter] key to confirm. d. Set Master group to A and press [Enter] key to confirm. e. Set Master Total to 3 and press [Enter] key to confirm. Copyright © Itech Electronic Co., Ltd.

  • Page 96: Synchronized Function (Link)

    Before configuring the synchronized function, each instrument must be set to a separate channel number ranging from 1 to 16. refer to 8.1 Multi-Channel Function There are three synchronized modes as follows: Copyright © Itech Electronic Co., Ltd.
  • Page 97 You can set parameters such as synchronized mode or On/Off delay time. Take the synchronized relationship among single instrument and multiple parallel groups for instance, the detailed connection method and procedures are as follows. Copyright © Itech Electronic Co., Ltd.
  • Page 98 • Online: indicates the instrument is in the synchronized relationship. • Offline: indicates the instrument is not in the synchronized relationship. d. Rotate the knob to set Mode and press [Enter] key to confirm. Copyright © Itech Electronic Co., Ltd.
  • Page 99 Multi-Machine Operation • OnOff Only • Track→Reference • Duplicate Copyright © Itech Electronic Co., Ltd.

  • Page 100: Routine Maintenance

    To prevent electrical shock, disconnect the instrument from AC mains power and disconnect all test leads before cleaning. • Do not use detergent or solvents. • Do not disassemble the instrument and attempt to clean internally. Copyright © Itech Electronic Co., Ltd.

  • Page 101: Information Reference

    Sense Protect Over Temp Protect Line Drop Protect Reverse Protect Temp Sense Failure Fan Failure Power Down Soft Wdog Protect Undefine Prot The Key Is Locked! Remote Mode! RWT Mode! Save Successful Save Failed Copyright © Itech Electronic Co., Ltd.

  • Page 102: Contact Of Itech Engineers

    If there are still some problems, carefully read the Warranty and Limitation of Warranty in the preface of the manual. Confirm that your instrument complies with warranty service conditions. If after your warranty expires, ITECH offers repair services at competitive prices.

  • Page 103: Return For Repair

    4006-025-000 for technical support and services. 9.5 Return for Repair If your instrument fails during the warranty period, ITECH will repair or replace it under the terms of your warranty. After your warranty expires, ITECH offers repair services at competitive prices. Also you can purchase an extended maintenance service contract that exceeds the standard warranty period.
  • Page 104 Routine Maintenance ITECH recommends that you retain the original shipping carton for return shipments and always insure shipments. To ship the unit to ITECH for service or repair: 1. Download the ITECH maintenance service application from our website, complete it and place it in the box with the instrument.

  • Page 105: Technical Specification

    Min. operating voltage 1V at 30A Range 0-30A Setup Resolution 10mA Accuracy ≤0.1%+0.1%FS Range 0-60V Setup Resolution Accuracy <0.1% Umax Range 0.04-600Ω Resolution Min.0.001Ω Accuracy (1/Rmin)*2%: (0.04~60Ω), (1/Rmin)*5%: (60~600Ω) Range 0-200W Setup Resolution 0.1W Copyright © Itech Electronic Co., Ltd.
  • Page 106 Battery Test AH Range 0AH-300AH AH Measure- Accuracy 0.20% ment Resolution 0.001AH Protection range 210W Short circuit test Current External analog (optional) Current programming External 0V~10V is 0~30A Current monitoring External 0V~10V is 0~30A Copyright © Itech Electronic Co., Ltd.

  • Page 107: M3322

    (1/Rmin)*2%: (0.04~60Ω), (1/Rmin)*5%: (60~600Ω) Range 0-400W Setup Resolution 0.1W Accuracy <1.0% Pmax Rising slope 30A/ms Dynamic Falling slope 30A/ms mode Min. rise time Input Read-back Range 0-30A Read-back Resolution current Accuracy ≤0.1%+0.1%FS Range 0-60V Read-back Voltage Resolution Copyright © Itech Electronic Co., Ltd.
  • Page 108 External 0V~10V is 0~60V Voltage monitoring External 0V~10V is 0~60V AC parameters Voltage range 100VAC -240VAC 264VAC 90VAC Frequency 47Hz~63Hz Max. current (rms） 2Aac (AC220V) DC Offset -0.1A~+0.1A Environment Working temperature 0- 40 °C Copyright © Itech Electronic Co., Ltd.

  • Page 109: M3332

    Input Current 0-30A ( 0 ℃-40 Input Power 0-800W ℃) Min. operating voltage 1V at 30A Range 0-30A Setup Resolution 10mA Accuracy ≤0.1%+0.1%FS Range 0-60V Setup Resolution Accuracy <0.1% Umax Range 0.04-600Ω Resolution Min.0.001Ω Copyright © Itech Electronic Co., Ltd.
  • Page 110 Temperature Coefficient Voltage Temperature 100ppm/℃ Coefficient Temperature Coefficient Current Temperature 50ppm/℃ Coefficient Battery Test AH Range 0AH-300AH AH Measure- Accuracy 0.20% ment Resolution 0.001AH Protection range 810W Short circuit test Current External analog (optional) Copyright © Itech Electronic Co., Ltd.
  • Page 111 0.1℃ Efficiency Max. efficiency (Full-load） Communication（Optional） Communication interfaces RS232/USB/RS485/CAN/LAN/GPIB/Analog Mechanical parameters Size and weight 450mm*214mm*43.5mm Net weight Calculation method of resistance precision range in load mode: lower limit: 1/(1/ R+(1/R)*0.05+0.004) ; Upper limit: 1/(1/R-(1/R)*0.05-0.004) Copyright © Itech Electronic Co., Ltd.

  • Page 112: M3313

    Read-back Resolution current Accuracy ≤0.1%+0.1%FS Range 0-150V Read-back Resolution 10mV Voltage Accuracy <0.1% Umax Range 0.25-1500Ω Read-back Resolution 0.01Ω Resistance Accuracy (1/Rmin)*2%: (0.25~100Ω), (1/Rmin)*5%: (100~1500Ω) Range 0-200W Read-back Resolution 0.1W Power Accuracy <1% Pmax Copyright © Itech Electronic Co., Ltd.

  • Page 113: M3323

    Input Current 0-12A ( 0 ℃-40 Input Power 0-400W ℃) Min. operating voltage 2V at 12A Range 0-12A Setup Resolution Accuracy ≤0.1%+0.1%FS Range 0-150V Setup Resolution 10mV Accuracy <0.1% Umax Range 0.25-1500Ω Resolution Min.0.01Ω Copyright © Itech Electronic Co., Ltd.
  • Page 114 155V 410W Short circuit test Current 13.2A External analog (optional) Current programming External 0V~10V is 0~12A Current monitoring External 0V~10V is 0~12A Voltage programming External 0V~10V is 0~150V Voltage monitoring External 0V~10V is 0~150V Copyright © Itech Electronic Co., Ltd.

  • Page 115: M3333

    R+(1/R)*0.05+0.004) ; Upper limit: 1/(1/R-(1/R)*0.05-0.004) 10.6 IT-M3333 Parameter IT-M3333 V1.2 Load Parameter Input Voltage 0-150V Rated value Input Current 0-12A ( 0 ℃-40 Input Power 0-800W ℃) Min. operating voltage 2V at 12A Range 0-12A Copyright © Itech Electronic Co., Ltd.
  • Page 116 Accuracy (1/Rmin)*2%: (0.25~100Ω), (1/Rmin)*5%: (100~1500Ω) Range 0-800W Read-back Resolution 0.1W Power Accuracy <1% Pmax Temperature Coefficient Voltage Temperature 100ppm/℃ Coefficient Temperature Coefficient Current Temperature 50ppm/℃ Coefficient Protection range 12.5A 155V 810W Short circuit test Copyright © Itech Electronic Co., Ltd.
  • Page 117 0.1℃ Efficiency Max. efficiency (Full-load） Communication（Optional） RS232/USB/RS485/CAN/LAN/GPIB/Analog Communication interfaces Mechanical parameters Size and weight 450mm*214mm*43.5mm Net weight Calculation method of resistance precision range in load mode: lower limit: 1/(1/ R+(1/R)*0.05+0.004) ; Upper limit: 1/(1/R-(1/R)*0.05-0.004) Copyright © Itech Electronic Co., Ltd.

  • Page 118: M3314

    Resolution 0.1mA current Accuracy ≤0.1%+0.1%FS Range 0-300V Read-back Resolution 10mV Voltage Accuracy <0.1% Umax Range 1-3000Ω Read-back Resolution 1Ω Resistance Accuracy (1/Rmin)*2%: (1~300Ω), (1/Rmin)*5%: (300~3000Ω) Range 0-200W Read-back Resolution 0.1W Power Accuracy <1% Pmax Copyright © Itech Electronic Co., Ltd.
  • Page 119 Environment Working temperature 0- 40 °C Storage temperature -20- 70℃ Noise 60dB External temperature measurement Measurement range -20℃——120℃ Measurement accuracy ±1℃ Measurement resolution 0.1℃ Efficiency Max. efficiency (Full-load） Communication（Optional） RS232/USB/RS485/CAN/LAN/GPIB/Analog Communication interfaces Mechanical parameters Copyright © Itech Electronic Co., Ltd.

  • Page 120: M3324

    0-400W Setup Resolution 0.1W Accuracy <1.0% Pmax Rising slope 6A/ms Dynamic Falling slope 6A/ms mode Min. rise time Input Read-back Range 0-6A Read-back Resolution 0.1mA current Accuracy ≤0.1%+0.1%FS Range 0-300V Read-back Voltage Resolution 10mV Copyright © Itech Electronic Co., Ltd.
  • Page 121 Voltage range 100VAC -240VAC 264VAC 90VAC Frequency 47Hz~63Hz Max. current (rms） 2Aac (AC220V) DC Offset -0.1A~+0.1A Environment Working temperature 0- 40 °C Storage temperature -20- 70℃ Noise 60dB External temperature measurement Measurement range -20℃——120℃ Copyright © Itech Electronic Co., Ltd.

  • Page 122: M3334

    ≤0.1%+0.1%FS Range 0-300V Setup Resolution 10mV Accuracy <0.1% Umax Range 1-3000Ω Resolution Min.1Ω Accuracy (1/Rmin)*2%: (1~300Ω), (1/Rmin)*5%: (300~3000Ω) Range 0-800W Setup Resolution 0.1W Accuracy <1.0% Pmax Rising slope 6A/ms Dynamic mode Falling slope 6A/ms Copyright © Itech Electronic Co., Ltd.
  • Page 123 External 0V~10V is 0~6A Voltage programming External 0V~10V is 0~300V Voltage monitoring External 0V~10V is 0~300V AC parameters Voltage range 100VAC -240VAC 264VAC 90VAC Frequency 47Hz~63Hz Max. current (rms） 4Aac (AC220V) >0.98（Lead or Lag） Power factor PF Copyright © Itech Electronic Co., Ltd.

  • Page 124: M3315

    Input Voltage 0-600V Rated value Input Current 0-3A ( 0 ℃-40 Input Power 0-200W ℃) Min. operating voltage 10V at 3A Range 0-3A Setup Resolution Accuracy ≤0.1%+0.1%FS Range 0-600V Setup Resolution 10mV Accuracy <0.1% Umax Copyright © Itech Electronic Co., Ltd.
  • Page 125 Current Temperature 50ppm/℃ Coefficient Protection range 3.1A 610V 210W Short circuit test Current 3.3A External analog (optional) Current programming External 0V~10V is 0~3A Current monitoring External 0V~10V is 0~3A Voltage programming External 0V~10V is 0~600V Copyright © Itech Electronic Co., Ltd.

  • Page 126: M3325

    Calculation method of resistance precision range in load mode: lower limit: 1/(1/ R+(1/R)*0.05+0.004) ; Upper limit: 1/(1/R-(1/R)*0.05-0.004) 10.11 IT-M3325 Parameter IT-M3325 V1.2 Load Parameter Input Voltage 0-600V Rated value Input Current 0-3A ( 0 ℃-40 Input Power 0-400W ℃) Min. operating voltage 10V at 3A Copyright © Itech Electronic Co., Ltd.
  • Page 127 Resolution 1Ω Resistance Accuracy (1/Rmin)*2%: (4~600Ω), (1/Rmin)*5%: (600~6000Ω) Range 0-400W Read-back Resolution 0.1W Power Accuracy <1% Pmax Temperature Coefficient Voltage Temperature 100ppm/℃ Coefficient Temperature Coefficient Current Temperature 50ppm/℃ Coefficient Protection range 3.1A 610V 410W Copyright © Itech Electronic Co., Ltd.
  • Page 128 0.1℃ Efficiency Max. efficiency (Full-load） Communication（Optional） RS232/USB/RS485/CAN/LAN/GPIB/Analog Communication interfaces Mechanical parameters Size and weight 450mm*214mm*43.5mm Net weight Calculation method of resistance precision range in load mode: lower limit: 1/(1/ R+(1/R)*0.05+0.004) ; Upper limit: 1/(1/R-(1/R)*0.05-0.004) Copyright © Itech Electronic Co., Ltd.

  • Page 129: M3335

    Resolution 0.1mA current Accuracy ≤0.1%+0.1%FS Range 0-600V Read-back Resolution 10mV Voltage Accuracy <0.1% Umax Range 4-6000Ω Read-back Resolution 1Ω Resistance Accuracy (1/Rmin)*2%: (4~600Ω), (1/Rmin)*5%: (600~6000Ω) Range 0-800W Read-back Resolution 0.1W Power Accuracy <1% Pmax Copyright © Itech Electronic Co., Ltd.
  • Page 130 DC Offset -0.1A~+0.1A Harmonic THDI <5% Environment Working temperature 0- 40 °C Storage temperature -20- 70℃ Noise 60dB External temperature measurement Measurement range -20℃——120℃ Measurement accuracy ±1℃ Measurement resolution 0.1℃ Efficiency Max. efficiency (Full-load） Communication（Optional） Copyright © Itech Electronic Co., Ltd.
  • Page 131 Technical Specification RS232/USB/RS485/CAN/LAN/GPIB/Analog Communication interfaces Mechanical parameters Size and weight 450mm*214mm*43.5mm Net weight Calculation method of resistance precision range in load mode: lower limit: 1/(1/ R+(1/R)*0.05+0.004) ; Upper limit: 1/(1/R-(1/R)*0.05-0.004) Copyright © Itech Electronic Co., Ltd.

  • Page 132: Supplemental Characteristics

    Supplemental Characteristics Supplemental Characteristics Recommended calibration frequency: once a year Cooling style: fans Copyright © Itech Electronic Co., Ltd.

  • Page 133: A Appendix

    ♦ Specifications of Red and Black Test Cables A.1 Specifications of Red and Black Test Cables ITECH provides you with optional red and black test cables, which are sold indi- vidually and you can select for test. For specifications of ITECH test cables and maximum current values, refer to the table below.
  • Page 134 Larger diameter wire sizes will help minimize wire voltage drops. Twisting or bundling wires will help reduce transient voltage drops. Copyright © Itech Electronic Co., Ltd.
  • Page 135 Contact Us Thanks for purchasing ITECH products. In case of any doubts, please con- tact us as follows: 1. Visit ITECH website: www.itechate.com. 2. Select the most convenient contact method, for further information.

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