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Guides for Microsoft Flight Simulator 2020
GTN 650 / GTN 750
GTN650 and GTN750 Gen2 Setup Guide for Microsoft Flight Simulator 2020
GTN650 and GTN750 Gen2 Setup Guide for Microsoft Flight Simulator 2020

Setup instructions for the RealSimGear GTN Devices in Microsoft Flight Simulator

Nick avatar
Written by Nick
Updated over a week ago

Last Updated: December 20, 2023

Package Inclusions

  • One: Quick Start Guide.

  • One: RealSimGear GTN650 or GTN750.

  • One: 12V 2.0 Amp DC Power Adapter with a 5.5mm x 2.1mm barrel connector. (North America socket pattern).

  • One: USB A to B cable .

  • One: 90 Degree HDMI adapter (included with the GTN650 only).

  • Four: M3 Self-tapping screws for plastic to secure your device to an appropriate desktop stand.

Before You Start

Before you begin the setup of your RealSimGear GTN 750 or GTN 650, you will need to complete the following items before connecting the device to your computer:

Install the RealSimGear Plugin

You will need to download and install the current version of the RealSimGear Device Interface for Microsoft Flight Simulator 2020.

Note: You will not need to install the optional touch screen drivers.

Note: By default the RealSimGear Device Interface for Microsoft Flight Simulator 2020 allows control of the PMS50 GTN software. If you are using the TDS Simulations GTNXi, you will need to update the default command mapping file to allow control of the TDS GTNXi buttons and knobs with your RealSimGear GTN650/750.

  • Download the CommandMapping.ini for MSFS (when using the TDS GTN650/750) - Version 4.4 - This is used for the RealSimGear Add-on version or newer on MSFS and is placed in the "C:\Program Files\RealSimGear MSFS Device Interface\Device Interface" folder.

Install 3rd party GTN software

If you have not done so already, you will need to purchase, download, and install the TDS Software GTNXi Avionics software for either the GTN750, GTN650 or Both devices.

Additionally, Microsoft Flight Simulator 2020 has a second option for GTN Software from PMS50. The PMS50 GTN software runs internally to Microsoft Flight Simulator 2020 and uses internal navigation data. It is also available as a free, basic version, or a premium Paid version.

Each version of the GTN software has its strengths and its weaknesses. For ease of integration into any aircraft in Microsoft Flight Simulator, RealSimGear recommends the TDS Simulation GTNXi Software.

Mounting your GTN to a RealSimGear Desktop Stand

The RealSimGear GTN 650 and GTN 750 can be mounted in a number of ways. The most common method of mounting will be through the use of a RealSimGear Desktop Stand (Sold Separately).

Included with your RealSimGear GTN, will be a small plastic bag containing four, M3 self-tapping screws. These four screws will be used to secure the GTN to the stand in the four holes depicted in the images below.

Note: Install the screws with a hand screwdriver (#2 Phillips Head). Overtightening the screws can strip the mounting holes or effect operation of the devices.

GTN 650

GTN 750

The images above show the GTN devices being mounted in a single device mount. If you have purchased a GTN combination mount, the method of installation will be the same, as the cutout patterns in the combo stands are the same as the single device stands.

Connect the cables (Covers both the GTN750 and GTN650)

Connect the cables in the following order:

  1. USB A to USB B: Connect the square Type B connector to the back of the GTN and the rectangular Type A connector to an available USB port on your PC or Powered USB hub.

  2. HDMI: You will need to supply one HDMI cable (not included with the GTN), to connect from the GTN to your PC's graphics card or RealSimGear USB3 to Dual HDMI Adapter. If you are connecting directly to the graphics card, it is acceptable to use a good quality DisplayPort to HDMI cable.
    Note for GTN650 Customers: You can use the 90 degree HDMI connection to allow proper cable management with the side mounted HDMI port.

  3. 12 Volt DC Power: Plug the barrel connector into the GTN unit, then plug the adapter into an available wall outlet.
    For international customers: you can use an outlet adapter to adapt the North American plug style to your local plug style. Additionally you can also purchase a dedicated DC adapter to your plug style from a local electronics retailer.
    Note for GTN650 Customers: The DC power port is located on the side of the GTN unit below the HDMI connector.

    Note: The spare USB Type A connector on the GTN750 (above and to the left of the HDMI port) is not used. Please refrain from plugging anything into this port.

Configuring the Display and Touch Screen

With your GTN now connected to your PC and powered on, you will need to configure the screen settings and let Windows know that these devices have a touch screen.

We have created a full guide on the process and steps needed to fully configure the display and touch screen in the article linked in the button below.

Note for the GTN650 Customers: Unlike the GTN750, you will not need to flip the display in Windows Display Properties. You will only need to set the (Recommended) display size which is 1920 x 1080 in Windows Display Properties, before activating your touch screen.

With the display configured and your touch screen mapped with Windows Tablet PC Settings you are now ready to proceed to Microsoft Flight Simulator 2020 and continue to configure your avionics.

Simulator Use

• By default, the GTN750 will appear as COM/NAV1 and the GTN650 as COM/NAV2 in the connected devices window of the RealSimGear Add-on. When you turn the knobs or press a button, the ‘message’ and ‘command’ sections will change accordingly. Button functions will display when pressed. When the button is released [Unmapped] will be displayed. This is normal behavior.

NOTE: If the GTN650/750 buttons and knobs are not working, please check to make sure the device shows up in the RealSimGear Add-on Device interface and that you have selected the correct GTN Device Type that matches how you have configured the TDSSim or PMS50 GTN. Additionally if you are using the TDS GTNXi, please ensure that you have installed the command mapping file as noted in the "Install RealSimGear Plugin" section above.

  • GTN 1 = Device Type COM1

  • GTN 2 = Device Type COM2

Touch screen control with MSFS Pop Out Panel Manager

Currently, Microsoft Flight Simulator 2020 does not have a method for direct manipulation of touch screen devices for it's avionics. This will effect your ability to control the G3000 GTC's, GTN 750/650, and G3X avionics in the simulator with your touch screen device.

Fortunately, a community member has stepped in, providing a free to use application for Microsoft Flight Simulator 2020 which will allow you direct control of touch enabled avionics. This program is: MSFS Pop Out Panel Manager

With the MSFS Pop Out Panel Manager you can have the mod automatically select, pop out, move, and make full screen all of the avionics in use with your RealSimGear hardware, this includes the G1000. Additionally this is the only way, presently, to use touch screen devices in MSFS until Asobo implements the feature.

  • You can get the most current release of the mod by hawkeye-stan directly from the authors GitHub page HERE

  • Support for the application is provided by the author on the official Microsoft Flight Simulator forums HERE

*Note: While we have fully tested the implementation and functionality of the mod, and confirm its compatibility with our devices, RealSimGear will not provide support for direct issues with the mod. This is to be done with the mod author through his discussion forum.

GTN Software for Microsoft Flight Simulator 2020

Presently, there are two options for GTN Avionics Software for Microsoft Flight Simulator 2020: PMS50 GTN or TDS Simulations GTNXi. Each package has it's own advantages over the other and both are compatible with the RealSimGear GTN hardware. RealSimGear recommends the TDS Simulations GTNXi for its ease of implementation into any aircraft in MSFS.

For more information on the PMS50 GTN Software package including purchase and installation details please follow this link:

For more information on the TDS Simulations GTNXi software package including purchase and installation details please follow this link:

If you have any questions, please send us an email to

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