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  • ProAssist is software for controlling the projector and adjusting the projection screen from a computer via a network.
    It allows necessary adjustments to be carried out smoothly when combining several projectors together to project a large screen in a classroom, meeting room, hall etc.

Main Features

  • Switching the input signal
  • Adjusting the quality and brightness etc. of the picture
  • Lens control
    Lens Shift and focusing etc. can be carried out and the adjustment values thereof can be saved.
  • Adjusting the color uniformity of the screen (Uniformity)(*1)
    It corrects the color non-uniformity that may occur locally on the projection screen. The color non-uniformity is reduced by gradually changing the colors in the selected range.
  • Adjusting the boundary of the screen (Edge Blending)(*2)
    It makes the screen boundary less distinct by adjusting the brightness, color density etc. of the area where the screens overlap.
  • Adjusting the intermediate tone colors between projectors(Gamma Tone)(*3)
    Adjust the RGB level for each gradation and set the gamma tone (gradation reproducibility) to make the screen uniform.
  • Correction of screen geometric distortion (Geometric Correction)
    Performs distortion correction when projecting onto a screen with a special shape such as a cylindrical or spherical surface etc.

Operating Environment

  • Windows 10 (32-bit version/64-bit version) Home / Pro / Enterprise / Education
Minimum resolution of screen
  • 1280x800

Supported Models

Supported Projector(MODEL NO.)
NP-PA803UL / NP-PA703UL (Firmware version 1.12 or later)
NP-PX803UL (Firmware version 1.11 or later)
NP-PX1004UL (Firmware version 1.07 or later)
NP-PX1005QL / NP-PH2601QL / NP-PH3501QL
(These models do not support functions *1:Uniformity, *2:Edge Blending and *3:Gamma Tone)

Starting ProAssist

  1. Download the ProAssist***.exe to your computer.
  2. Doubleclick ProAssist***.exe.
  • Proceed to the next step according to the message on the screen.


Version 1.1.0

file name file size

What's new

Version 1.1.0

  • Supported Geometric Correction.
  • Supported newer models.

User Manual

Language File name File size
English ProAssist_manual_ENG_v2.pdf 3.10MB
Simplified Chinese ProAssist_manual_CHI_v2.pdf 3.37MB


Language URL
English Start here
English Fine-tune color adjustments
English How to merge multiple pictures
English Picture adjustments
English Geometric correction


Q1Projector is not recognized
  • Is the projector that you are using compatible with ProAssist?
  • Are the computer and projector connected correctly to the network?
  • Have you turned on the projector?
Q2Picture is distorted
  • Are the projectors installed correctly?
  • To correct a distorted image, perform Geometric Correction.
Q3The brightness of the screen differs for each of the projectors in tiling projection
  • Adjust the brightness with the Light Mode and Light Adjust.
  • Adjust Ref. White Balance.
Q4The screens of the projectors differ in color in tiling projection
  • Adjust Gamma Tone.
Q5The color is not uniform locally on the projection screen
  • Adjust Uniformity.
  • If the projector is a LCD-type projector, the non-uniformity of the brightness of the LCD panel may appear as a non-uniform color on the projection screen. This is a characteristic of the LCD panel and is not a malfunction. The non-uniformity in color can be reduced by adjusting the Uniformity.
Q6I want to copy the registration details of the Projector List to another computer
  • You can export the registration details of the Projector List to the LIST file or import them into another computer.
Q7The projector will not respond when you perform menu selection or a variety of settings and adjustments successively
  • Much communications at a time may result in your waiting for a response from the projector. If this happens, wait until the process is finished.
Q8Communication error is displayed
  • Use the projector that has ProAssist installed to check for the network connected to the projector.
  • Refer to the projector’s user’s manual to check if your projector supports the function causing a communication error.

About Trademarks

  • ProAssist is a trademark of NEC Display Solutions, Ltd.
  • Windows is a registered trademark or trademark of Microsoft Corporation in the US and other countries.
  • Other manufacturer names and products names described in the user manual are registered trademarks or trademarks of the respective companies.

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