ITech IT-M3131D User Manual
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ITech IT-M3131D User Manual

Dual-channel programmable dc power supply
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Dual-channel Programmable
DC Power Supply
IT-M3100D Series User Manual
Model: IT-M3131D/IT-M3141D/IT-M3132D/IT-M3142D
Version: V2.1 / 02，2023

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  • Page 1 Dual-channel Programmable DC Power Supply IT-M3100D Series User Manual Model: IT-M3131D/IT-M3141D/IT-M3132D/IT-M3142D Version: V2.1 / 02，2023...
  • 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 equipment 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; oth- erwise, 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

    4.1.5 Select Trigger Source(Trig Source)............. 46 4.1.6 Output Lock Control..................47 4.2 System-Related Operations................... 48 4.2.1 Set the Key Beeper..................48 4.2.2 Set the Power-on State ................48 4.2.3 Set the Communication Information ............49 Copyright © Itech Electronic Co., Ltd. VIII...
  • Page 11 6 Routine Maintenance ....................... 90 6.1 Instrument Self-Test ....................90 6.2 Cleaning and Maintenance ..................90 6.3 Contact of ITECH Engineers ................. 91 6.4 Return for Repair....................92 A Appendix .......................... 94 A.1 Specifications of Red and Black Test Cables ............94...

  • Page 12: Quick Reference

    High speed measurement capability • Intelligent fan control, saving energy and reducing noise • List function • Output-on/off delay function to customize test timing • 2-channel parallel operation function of a single instrument • Synchronized operation Copyright © Itech Electronic Co., Ltd.

  • Page 13: Front-Panel Overview

    • Pushing the knob acts like pressing [Enter] key to confirm an operation. Left, and right ar- Moves the cursor below the setting value or scrolls pages to view menu row keys items. Copyright © Itech Electronic Co., Ltd.

  • Page 14: Keyboard Introduction

    Moves the cursor below the setting value or scrolls pages to view menu items. Composite key [Shift], combined with other keys to realize functions marked above keys. The detailed functions are listed as follows. Copyright © Itech Electronic Co., Ltd.

  • Page 15: Home-Screen Overview

    Turn the keyboard lock on or off. 1.4 Home-Screen Overview IT-M3100D series power supplies run a self-test automatically when it is turned on. If the self-test finishes with no errors, the screen below is displayed. Copyright © Itech Electronic Co., Ltd.

  • Page 16: Prompt Information Reference

    Indicates the instrument is in remote control. Indicates the output is self-locked. Indicates the instrument is running the sys- System Selftest tem selftest. Indicates the instrument is switching to the Switch To Master Mode master mode. Copyright © Itech Electronic Co., Ltd.
  • Page 17 File is empty! Indicates the recalled file is empty. Indicates the list program is waiting for Waiting for Trigger trigger. Indicates the user needs to input the cali- Input Cal Code To Start: bration code Copyright © Itech Electronic Co., Ltd.

  • Page 18: Rear-Panel Overview

    Trigger signal terminals, when set to In, the terminals can receive (Lock±) high level pulse signal as a trigger source; when set to Out, if the trigger happens, the terminals can generate high level pulse signal. Copyright © Itech Electronic Co., Ltd.

  • Page 19: Front Panel Menu Reference

    Set the output-on delay time On Delay Range: 0.000~10; unit: second Set the output-off delay time Off Delay Range: 0.000~10; unit: second Set the sense function state. Sense • Off: Turn the sense function off. Copyright © Itech Electronic Co., Ltd.

  • Page 20: System Menu Reference

    Single mode. Configure the instrument to 2-channel parallel mode. Parallel Configure the instrument to 2-channel series mode. Series It is forbidden to output more than 100V voltage after two channels are connected in series. Copyright © Itech Electronic Co., Ltd.
  • Page 21 Manual: manually configure the ad- dress of the instrument by entering values in the following six fields. The following information only ap- pear when Manual is selected. • IP Addr • Sub Net • Gateway Copyright © Itech Electronic Co., Ltd.
  • Page 22 Display as the following format: baud rate_data bit_parity bit_stop bit. • Select the baud rate from the following op- tions: 4800, 9600, 19200, 38400, 57600, 115200. • The data bit, parity bit and stop bit are fixed: 8_None_1. Copyright © Itech Electronic Co., Ltd.
  • Page 23 When the pin inputs 0V low level, the On/Off light is off; when the pin inputs 5V high level, the On/Off light is on. System Select whether to restore the factory default settings or not. Reset Copyright © Itech Electronic Co., Ltd.

  • Page 24: Protect Function Menu Reference

    Level Delay Delay time. Over-current protection. Turn the OCP function off. Turn the OCP function on. Level Over-current limit. Delay Delay time. Over-power protection. Turn the OPP function off. Turn the OPP function on. Copyright © Itech Electronic Co., Ltd.

  • Page 25: Advanced Function Menu Reference

    1.8 Models and Options IT-M3100D series models Model Voltage Current Power IT-M3131D 200W IT-M3141D 400W IT-M3132D 200W IT-M3142D 400W Options You can purchase accessories for this series of instruments separately, includ- ing the following: Copyright © Itech Electronic Co., Ltd.
  • Page 26 Cabinet installation This series instruments can be mounted on a standard 19-inch cabinet. ITECH has prepared a special bracket for the user as a mounting kit. The detailed descriptions of the options are as follows. The following optional accessories from ITECH are sold separately. Users need to purchase separately.
  • Page 27 Power off the instru- ment before installing the communication card. After the communication card is installed, power on the instrument. At this time, the instrument takes about 30 seconds to update the com- munication board automatically. Copyright © Itech Electronic Co., Ltd.

  • Page 28: Inspection And Installation

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

  • Page 29: Instrument Size Introduction

    The detailed sizes are shown as below. 2.3 Rack Mounting This instrument can be installed on standard 19-inch rack. ITECH provides user with optional mount kit IT-E154. The detailed operation please refer to the IT- E154 User Manual of your mount kit.

  • Page 30: Connecting The Power Cord

    If purchased model fails to meet local voltage requirements, please con- tact distributor or factory for change. China United States & Europe England IT-E171 Canada & Japan IT-E173 IT-E174 IT-E172 Copyright © Itech Electronic Co., Ltd.

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

    ± output terminals. As shipped, the sense terminals are internally connected to the output terminals. This is referred to as Local measurement. If you need to use remote sensing, after making the connection, be sure to turn Copyright © Itech Electronic Co., Ltd.
  • Page 32 For specifications of test cables and maximum current values, refer A.1 Appendix→Specifications of Red and Black Test Lines for more information. Local Measurement The connection diagram and steps of local sensing are as follows. Copyright © Itech Electronic Co., Ltd.
  • Page 33 The connection diagram and steps of remote sensing are as follows. Copyright © Itech Electronic Co., Ltd.

  • Page 34: Connect The Communication Interface

    4.1.3 Set the Sense Function State for the detailed operations. 2.7 Connect the Communication Interface This series power supply has no standard-equipped communication interfaces. Users can purchase communication cards separately. Users can choose one of Copyright © Itech Electronic Co., Ltd.
  • Page 35 Use a small flat screwdriver to press the clip at the upper cover opening. b. At the same time, use another small flat screwdriver to stir the slots one by one from another opening of the upper cover, and push the plastic plug out. Copyright © Itech Electronic Co., Ltd.

  • Page 36: Usb Interface

    Please download the driver from the NI official website. After the driver is installed successfully, it will be recognized as the USB device address in the computer device man- ager. As below. Copyright © Itech Electronic Co., Ltd.

  • Page 37: Lan Interface

    • VCP: Virtual serial port. The Win7 version of the operating system needs to install the supporting driver. Please download the driver from the ITECH offi- cial website or contact the ITECH technical support personnel to obtain it. The operating system of Win10 and above does not need to install the driver.
  • Page 38 IP address every time it connects to the network. The user can view the related information of LAN interface or configure the communication parameters in system menu. • Automatically configure the address of the instrument.(Auto) Copyright © Itech Electronic Co., Ltd.
  • Page 39 IP Address. A value of 0.0.0.0 indicates that no default server is defined. – Socket Port: This field indicates the port number corresponding to the RawSocket service. The operation steps to configure are as follows. Copyright © Itech Electronic Co., Ltd.
  • Page 40 4. Use left and right keys or rotate the knob to select Lan Restore and press [Enter] key to confirm. • NO: indicates refuse to reset the LAN to the default settings. Copyright © Itech Electronic Co., Ltd.
  • Page 41 The following figure is just as an example and the Web interface of different models are different. The actual shown page shall be subject to the connected instrument. 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. 2.7.2.2 Using Sockets The instruments allow up to six simultaneous socket connec- tions to be made.

  • Page 43: Can Interface

    TXD, transmit data RXD, receive data CAN_H IT-E1207 CAN_L CAN Configuration The user needs to configure the CAN interface parameters in the system menu before using the remote control. The CAN interface parameters are as follows. Copyright © Itech Electronic Co., Ltd.
  • Page 44 If the communication signal is poor or unstable, it is recommended to con- nect a 120 Ω terminating resistance. – The connection diagram of a single device is as below. – The connection diagram of multiple devices is as below. Copyright © Itech Electronic Co., Ltd.

  • Page 45: Gpib Interface

    Use left and right keys or rotate the knob to select GPIB and press [Enter] key to confirm. d. Rotate the knob to adjust the GPIB address and press [Enter] key to confirm. e. After finishing the setting, press [Esc] to exit. Copyright © Itech Electronic Co., Ltd.

  • Page 46: Interface

    Definition of RS-232 Pins The definition of RS-232 pins are as follows. Description TXD, transmit data RXD, receive data CAN_H IT-E1207 CAN_L RS-232 Connection Directly connected to the computer, as shown below: Copyright © Itech Electronic Co., Ltd.
  • Page 47 4. Rotate the knob to set the baud rate. 5. After finishing the setting, 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: Copyright © Itech Electronic Co., Ltd.

  • Page 48: Interface

    Pin13 are the A and B pins for RS-485. Refer to Analog interface for more information. RS-485 Configuration 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. Copyright © Itech Electronic Co., Ltd.
  • Page 49 5. Use left and right keys or rotate the knob to select RS485 Addr and press [Enter] key to enter the RS485 address setting interface. 6. Rotate the knob to set the communication address and press [Enter] to confirm. 7. After finishing the setting, press [Esc] to exit. Copyright © Itech Electronic Co., Ltd.

  • Page 50: Getting Started

    AC input power to the unit. Power Switch Introduction The power switch is located in the lower left corner of the front panel. The power switch is a button, and pressing once indicates ON and pressing again indicates OFF. Copyright © Itech Electronic Co., Ltd.
  • Page 51 Wait until the power is turned off and then start again. If the problem still cannot be solved after restart- ing, please contact the ITECH engineer. Common error messages are shown in the following table:...

  • Page 52: Set The Output Voltage

    1. Press [Shift]+[V-set] (Config) to enter the configuration menu page. 2. Use the knob or press the left and right direction keys to select P-Set, press [Enter] to confirm, and enter the setting interface. Copyright © Itech Electronic Co., Ltd.

  • Page 53: Use The Front Panel Menu

    Press [Esc] to return to the previous menu. When performing any function key operation, press [Esc] key to exit the function operation state. Please refer to 1.7 Front Panel Menu Reference for the detailed map of the front panel menus. Copyright © Itech Electronic Co., Ltd.

  • Page 54: Output On/Off Control

    VFD screen shows that the power supply status is OFF. You can turn the output of the two channels on or off simultaneously through the ALL On/Off on the front panel. Copyright © Itech Electronic Co., Ltd.

  • Page 55: Functions And Features

    Voltage priority mode keeps the output voltage constant. In voltage priority mode, the output voltage should be set to the desired value. The output is controlled by a constant-voltage feedback loop, which maintains the output voltage at its programmed setting. Copyright © Itech Electronic Co., Ltd.

  • Page 56: Set The Output-On/Output-Off Delay Time

    IT-M3100D series power supplies support two connection methods between power supply and device under test (DUT): Local sensing and Remote sensing. The remote sensing is used for maximizing measurement accuracy. (Refer to 2.6 Connecting the Device Under Test (DUT) for more information.) Copyright © Itech Electronic Co., Ltd.

  • Page 57: Set The Bleeder State (Bleeder)

    3. Rotate the knob to select Off or On and press [Enter] key to confirm. 4.1.5 Select Trigger Source(Trig Source) This menu item is used to select the trigger source. IT-M3100D series power supply supports the following trigger sources: Copyright © Itech Electronic Co., Ltd.

  • Page 58: Output Lock Control

    DUT. The output can be re-enabled by remov- ing the jumper or shorting clip between the Lock+ and Lock– connectors. The figure below shows the short connection between the Lock± interfaces. Copyright © Itech Electronic Co., Ltd.

  • Page 59: System-Related Operations

    3. Rotate the knob to select the value from the following options. • Reset: default value, indicates when the power supply is powered on, the power supply will initialize some settings and output state. Copyright © Itech Electronic Co., Ltd.

  • Page 60: Set The Communication Information

    TRIG± interface can trigger the instrument. • Trig Out: When the trigger source is set to Keypad or Bus and the trigger happens, the TRIG± interface generates a high pulse trigger signal. Copyright © Itech Electronic Co., Ltd.

  • Page 61: Restore The Factory Default Settings

    The detailed default parameters are listed in the following table. Parameter Default Value The setting values on the front panel Voltage Current Config menu CV Priority Mode V-Rise Time 0.001 S V-Fall Time 0.001 S I-Rise Time 0.001 S Copyright © Itech Electronic Co., Ltd.
  • Page 62 CAN Baud rate 250k CAN Address EXT-Program 9600_8_None_1 RS–485 Single Parallel Mode Link Status Offline On/Off Only Link Mode Chan Number Trig Trig Source Keypad Protect menu U Max Level U Min Level 0.00 V Copyright © Itech Electronic Co., Ltd.

  • Page 63: View The System Information

    Display the main firmware version. Main Display the communication board version. Comm Display the version of the control board for Sub1 channel 1. Display the version of the control board for Sub2 channel 2. Display the serial number. Copyright © Itech Electronic Co., Ltd.

  • Page 64: Switch Local/Remote Mode

    The saved settings include the following parameters. • The voltage setting value; • The current setting value. You can do the save and recall operations by the following two methods. Copyright © Itech Electronic Co., Ltd.

  • Page 65: Multi-Machine Operation

    Function Introduction The multi-machine operation refers to connecting multiple instruments accord- ing to a fixed wiring mode through the System Bus interface to realize multi- channel and synchronous control functions. Copyright © Itech Electronic Co., Ltd.

  • Page 66: Multi-Channel Function

    PC, then the user can independently control each power supply of the system in the PC software. The following three power sup- plies are taken as an example to describe the connection and operation steps of multiple channels. Copyright © Itech Electronic Co., Ltd.
  • Page 67 Connect system bus interfaces. b. Connect the DUTs. Refer to 2.6 Connecting the Device Under Test (DUT) for more information about connection methods. c. Connect the power supply to PC. Copyright © Itech Electronic Co., Ltd.

  • Page 68: Synchronized Function (Link)

    Reference. • Duplicate: in this mode, the synchronized operations includes: output on/off synchronization, voltage/current setting value changing synchronization, Save/Recall synchronization, priority mode synchronization, voltage/current rising/falling synchronization and Protect menu function synchronization. Copyright © Itech Electronic Co., Ltd.
  • Page 69 In the synchronized status, you can set the On/Off delay time of each instru- ment to customize your test timing. Take the synchronized relationship among single power supply and multiple parallel groups for instance, the detailed connection method and procedures are as follows. Copyright © Itech Electronic Co., Ltd.
  • Page 70 Rotate the knob to set Mode and press [Enter] key to confirm. • OnOff Only • Track→Reference If you select Track mode, you need to set the Reference value of each unit in the System Bus link. • Duplicate Copyright © Itech Electronic Co., Ltd.

  • Page 71: Channel Parallel Function (Parallel)

    Save/Recall: When it is Single, after the two channels execute save and Parallel respectively, the recall voltage value is the CH1 voltage value, and the current is the sum of the current values of the two channels. When it is Copyright © Itech Electronic Co., Ltd.
  • Page 72 Rotate the knob, select Single, and press [Enter] to confirm. 2. After the parameter setting is completed, the instrument will restart automati- cally. After restarting, the device will enter the 2-channel independent mode. Copyright © Itech Electronic Co., Ltd.

  • Page 73: Channel Series Function (Series)

    Series, and the cur- rent is the corresponding current in Series mode. • PROTECT menu: After Series, the default is the parameters of CH1 chan- nel. When switching back to single, the two channels are Series parameters. Copyright © Itech Electronic Co., Ltd.
  • Page 74 3. Refer to the figure below to connect the DUT, and live wiring is prohibited. The connection method shown in the figure above is the wiring method when the Sense is turned on. Copyright © Itech Electronic Co., Ltd.

  • Page 75: Protection Function

    To avoid causing damage to the DUT, after you set the U-Max, U-Min, the set- ting value from the [V-set] key on the front panel can’t exceed the setting limit. The operation steps are as follows. Copyright © Itech Electronic Co., Ltd.

  • Page 76: Set Over-Voltage Protection

    3. Use left and right keys or rotate the knob to select On and press [Enter] key to confirm. 4. Rotate the knob to adjust the over-voltage limit Level and press [Enter] key to confirm. Copyright © Itech Electronic Co., Ltd.

  • Page 77: Set Over-Current Protection

    The buzzer sounds intermittently; • The interface displays “Over Current Protect” and flashes; • Status register, the OC status bit is set to 1. Enable OCP 1. Press [Shift]+[Esc] (Protect) to enter Protect menu interface. Copyright © Itech Electronic Co., Ltd.

  • Page 78: Set Over-Power Protection

    When over-power protection occurs, the instrument responds as follows: • Instrument output is off; • The buzzer sounds intermittently; • The interface displays “Over Power Protect” and flashes; Copyright © Itech Electronic Co., Ltd.

  • Page 79: Over-Temperature Protection

    If an over-temperature condition occurs, turn off the instrument and allow it to cool for 30 minutes. You cannot turn the output on until the instrument cools down. Press [On/Off] key to turn the output on. Copyright © Itech Electronic Co., Ltd.

  • Page 80: Set Foldback Protection

    Functions and Features When you return power to the instrument, verify that the cooling fan is running. If not, please contact ITECH. Leaving the instru- ment turned on with the failure message displayed or with an in- operative cooling fan may result in damage to the instrument.

  • Page 81: List Function

    Repeat Set the number of loops to run the List file, range: 1–65535. Set to 65535 to run in an infinite loop. Edit Step Edit parameters for each step. Copyright © Itech Electronic Co., Ltd.

  • Page 82: Edit List Program

    Copy File X Copy list program. to X 4.7.1 Edit List Program You can use the list program to perform a variety of output waveform simula- tions. The execution flowchart of list program is as follows. Copyright © Itech Electronic Co., Ltd.
  • Page 83 • If you need to delete steps, select Delete Step and press [Enter] key to confirm. Use knob to set the delete location and press [Enter] key. Copyright © Itech Electronic Co., Ltd.

  • Page 84: Copy List Program

    At this point, the inter- face displays all steps and automatically locates at the selected step. 8. Use knob or left and right keys to view all steps. Copyright © Itech Electronic Co., Ltd.

  • Page 85: Run List Program

    Remote monitoring of output voltage/current measurement and CC/CV mode • Remote monitoring of output On/Off state, load status and fault status • Clear the instrument malfunction • RS-485 communication interface, please refer to 2.7.6 RS-485 Interface detailed description about the interface Copyright © Itech Electronic Co., Ltd.
  • Page 86 Sends the signal that is used to indicate the operation mode of the power supply. When the power supply is in CC mode, the pin generates 5 V. When the power supply is in CV mode, the pin generates 0 V. Copyright © Itech Electronic Co., Ltd.
  • Page 87 Signal output for indicating the output On/Off status of the power supply. When the output is turned on, the pin gener- ates 5 V; If the output is turned off, the pin generates 0 V. Ground Ground for digital inputs and outputs. Copyright © Itech Electronic Co., Ltd.
  • Page 88 • On: indicates enable this function. Before enabling the external analog function, verify that pin 1 (Vol_Pro) and pin 15 (Cur_Pro) are connected correctly. 5. After finishing the setting, press [Enter] key to confirm. Copyright © Itech Electronic Co., Ltd.
  • Page 89 60 V. If the maximum rated value is 30 A, and if the voltage source is set to 5 V, the setting current should be approximately 15 A. • Voltage Monitoring and Current Monitoring This function can monitor and read the output voltage and current values. Copyright © Itech Electronic Co., Ltd.
  • Page 90 120 V, and if the pin 14 generates 2.5 V, the output voltage should be ap- proximately 30 V. If the maximum rated value is 30 A, and if the pin 2 gener- ates 2 V, the output current should be approximately 6 A. Copyright © Itech Electronic Co., Ltd.

  • Page 91: Specification

    This chapter will introduce the rated voltage, current, power and many other main parameters of IT-M3100 series power supplies. ♦ IT-M3131D ♦ IT-M3132D ♦ IT-M3141D ♦ IT-M3142D ♦ Supplemental Characteristics 5.1 IT-M3131D Parameter Model: IT-M3131D CH1 & CH2 Voltage 0～30V Current 0～15A Rated value Power 0～200W Resistance Voltage ≤0.02%+0.005%FS...
  • Page 92 Specification Parameter Model: IT-M3131D CH1 & CH2 Power ≤1% + 1%FS Ripple (20hz-20Mhz) ≤40mVpp(MAX: ≤60mVpp) Vrms ≤8mV Ripple (20hz-300Khz) Irms ≤10mA Voltage ≤0.005% + 0.5mV Setup Temperature Coefficient (％of Output+Offset)/℃ Current ≤0.005% + 0.5mA Voltage ≤0.005% + 0.5mV Read Back Temperature Coeffi- cient (％of Output+Offset)/℃...

  • Page 93: M3132D

    Specification Parameter Model: IT-M3131D CH1 & CH2 Isolation ( output to ground) 400Vdc Isolation (input to ground) 1500Vac Working Temperature 0～40℃ Fuse Specifications T15A Parallel Number ≤1 Series Number ≤1 Ingress Protection IP20 Production Compliance IEC 61010 Cooling Air cooling 　214mmW*43.5mmH*450mmD...
  • Page 94 Readback stability-30min (％of Output +Offset) Current ≤0.1% + 0.2%FS Voltage ≤0.01% + 0.015%FS Readback stability-8h (％of Output +Offset) Current ≤0.1% + 0.25%FS Efficiency Remote Sense Compensation Voltage ≤2V Command Response Time Power Factor 0.98 Copyright © Itech Electronic Co., Ltd.

  • Page 95: M3141D

    Model: IT-M3141D CH1 & CH2 Voltage 0～30V Current 0～15A Rated value Power 0～400W Resistance Voltage ≤0.02%+0.005%FS Line Regulation ±(％of Out- put+Offset) Current ≤0.05%+0.01%FS Voltage ≤0.01%+0.008%FS Load Regulation ±(％of Output+Offset) Current ≤0.05%+0.05%FS Voltage Setup Resolution Current Copyright © Itech Electronic Co., Ltd.
  • Page 96 Setup stability-30min (％of Output +Offset) Current ≤0.1% + 0.2%FS Voltage ≤0.01% + 0.015%FS Setup stability-8h (％of Output +Offset) Current ≤0.1% + 0.25%FS Voltage ≤0.01% + 0.01%FS Readback stability-30min (％of Output +Offset) Current ≤0.1% + 0.2%FS Copyright © Itech Electronic Co., Ltd.

  • Page 97: M3142D

    Cooling Air cooling 　214mmW*43.5mmH*450mmD Dimensions without legs and terminals (mm) 　234mmW*476mmD*52.9mmH Overall dimension (mm) Weight( net) (5±0.5)kg 5.4 IT-M3142D Parameter Model: IT-M3142D CH1 & CH2 Voltage 0～60V Current 0～10A Rated value Power 0～400W Resistance Copyright © Itech Electronic Co., Ltd.
  • Page 98 Rise Time( full load ) Voltage ≤30ms Fall Time( no load ) Voltage ≤500ms Fall Time( full load ) Voltage ≤30ms Transient Response Time Voltage ≤1ms Voltage 100Vac～240Vac (rated power) AC Input Frequency 50/60Hz Copyright © Itech Electronic Co., Ltd.
  • Page 99 0～40℃ Fuse Specifications T15A Parallel Number ≤1 Series Number ≤1 Ingress Protection IP20 Production Compliance IEC 61010 Cooling Air cooling Dimensions without legs and terminals (mm) 　214mmW*43.5mmH*450mmD 　234mmW*476mmD*52.9mmH Overall dimension (mm) Weight( net) (5±0.5)kg Copyright © Itech Electronic Co., Ltd.

  • Page 100: Supplemental Characteristics

    Specification 5.5 Supplemental Characteristics State storage capacity: 10 sets Recommended calibration frequency: once a year Cooling style: fans Copyright © Itech Electronic Co., Ltd.

  • Page 101: Routine Maintenance

    During self-test, errors may be induced by signals present on ex- ternal wiring, such as long test leads that can act as antennae. 6.2 Cleaning and Maintenance To ensure the safety function and performance of the instrument, please clean and maintain the instrument properly. 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 re- pair services at competitive prices.

  • Page 103: Return For Repair

    4006-025-000 for technical support and services. 6.4 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 re- pair services at competitive prices. Also you can purchase an extended mainte- nance service contract that exceeds the standard warranty period.
  • Page 104 ITECH recommends that you retain the original shipping carton for return ship- ments 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: 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 106 Larger diameter wire sizes will help minimize wire voltage drops. Twist- ing or bundling wires will help reduce transient voltage drops. Copyright © Itech Electronic Co., Ltd.
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This manual is also suitable for:

It-m3100d seriesIt-m3141dIt-m3132dIt-m3142d

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