• High precision universal 4-channel LED controller with external trigger and 0.1mA current resolution


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    Gewu Optics has developed a series of computer-controlled multi-channel universal LED drivers that can be used to drive any type of LED in any of three (3) modes: "normal" (or "constant current"), "strobe", and/or external "trigger" modes. Each unit is equipped with PC based software with a user-friendly GUI, allowing users to drive LEDs without writing any code. In addition, a powerful SDK is provided for users to write their own software and integrate Goptica's LED drivers into their own systems. In addition, the driver has built-in safety features that allow users to limit the LED driving current and voltage.


    This data sheet covers four (4) product series (i.e. FA, FV, XA, and XV series) of high-precision universal 4-channel LED controllers with external triggers and 0.1mA current resolution, currently including four models. All FA/FV/XA/KV LED controllers have a current resolution of 0.1mA, with a maximum current of 100mA in DC mode and 350mA in pulse mode.





    characteristicapplication

    Drive current up to 100mA in DC mode and up to 350mA in pulse mode, with overcurrent protection

    - Current resolution 0.1mA

    - Computer control

    - USB and RS232 interfaces

    - Universal - Suitable for any LED

    - Capable of driving variable loads

    - User friendly application software with GUI

    - Includes SDK and rich RS232 command set, suitable for custom applications

    - Each channel has normal, strobe, and trigger modes

    - Programmable constant current, pulse width modulation, and/or arbitrary waveform

    - Each channel has an output voltage of up to 23.5V

      Programmable rising edge or falling edge external trigger

    - Built in non-volatile memory, can be used without a PC




    - machine vision

    - Monitor

    - Microscope

    - Semiconductor equipment

    - Testing instruments

    - Medical devices

    - Lighting




  • Product specifications and parameters

    Product manual:   格物PDF.png

    ParameterSLC-XAxx-xxSLC-XVxx-xxSLC-FAxx-xxSLC-FVxx-xxUnit
     Power input voltage,V dc9~24V
     Power input current< 4,000mA
     Drive voltage for each channel(maximum)1(Vdc - 0.5)V
     Drive current for each channel0 ~ 100(“Normal”mode)mA
    0 ~ 350(“Flashing” or“Trigger” Mode)mA
     Output current resolution0.1mA
     Linearity of output current+/-0.4(or +/-0.5%)mA
     Repeatability of output current+/-0.1(or +/-0.2%)mA
     Trigger input high level4.5 ~ 10.0V
     Trigger input low level0.8(maximumV
     Forward voltage monitoring accuracyNot Applicable+/-10Not Applicable+/-10mV

    Note:

    1. The maximum output voltage is 0.5V lower than the input voltage of the power supply. For example, if the input voltage of the power supply is Vdc=24V, the maximum output voltage Vmax is Vdc-0.5V=23.5V.

    2. Each output channel can be individually configured to operate in one of the following three (3) modes and controlled through PC software with GUI. In all three modes, an overcurrent limit can be set:

    Normal: Output a constant current at any value between 0mA and 100mA with a 12 bit resolution.

    Trigger: External trigger signals can be used to open each individual channel, generating driving currents with any user-defined waveform. Alternatively, each output channel can operate in "follower" mode, where the current output follows the waveform of the trigger input;

    Strobe: The internal strobe generator can generate a frequency of up to 25KHz. The strobe signal (i.e. current level, duty cycle, and strobe frequency) can be set through software. For the AA and AV series, the strobe signal can be any user-defined waveform with 128 data points.

    3. Any waveform. Using the accompanying application software or SDK or RS232 command set, users can define any waveform using 128 data points.


    Time sequence specification:

    ParameterSLC-XAxx-xxSLC-XVxx-xxSLC-FAxx-xxSLC-FVxx-xxUnit
    Number of data points defined by waveform20μs
    Number of data points defined by waveform1282
    Trigger pulse width100(minimum)μs
    Maximum trigger delay25μs


    What is“arbitrary waveform”?
    – For certain LED controller models, up to 128 pairs of [current (mA), duration (μ s)] data points can be used to define the "shape" of the waveform. This will allow the definition of "arbitrary waveform" for LED driving current, thereby defining the light output of the LED. Please refer to the following figure for details.



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