DNT Optics TNC225R Thermal Night Vision Compact 225 LRF

Safety Instructions

• DO NOT look directly into the INFRARED (IR) Illuminator to avoid eye damage.
• Switch off the IR Illuminator when not in use to prevent excessive heat generation. Avoid pointing it towards flammable objects.
• Do not point the device at strong light sources such as the sun or open flames, as this may damage the thermal sensor.
• Device operating temperature: -4°F to 122°F (-20°C to 50°C).
• Please contact customer support if any malfunctions occur. Do not attempt to disassemble the scope.

Description

The TNC225R is a Thermal and Night Vision multispectral digital scope that can be used 24/7 in all-weather conditions. Digital Night Vision combined with a thermal sensor enables faster target detection with the benefit of a high quality digital image for identification.

Package Content

• TNC225R Scope
• Eye Cup
• Mount Accessories
• USB Cable
• User Manual

Specifications

Features

• Three imaging modes: Day/Night mode, Thermal mode, and PIP with Day/Night & Thermal combined mode.
• Video recording resolution: 1024*768.
• Ultra HD image quality, Micro-OLED 1024*768 display.
• Full screen recording including on-screen display, reticle, LRF, etc.
• One shot zero.
• Picture-in-Picture (PiP).
• Reticle Zeroing in Picture-In-Picture mode.
• Digital image & thermal image alignment.
• Removable IR illuminator ?.
• 3-Axis Gyroscope.

Main Parts and Controls

The ThermNight scope features several controls and components:

• 1 Eye Cup: For viewing the display.
• 2 Ocular: The eyepiece lens.
• 3 Scope Diopter: Adjusts focus for individual eyesight.
• 4 Magnification Wheel: Adjusts zoom levels.
• 5 Record Button: Starts/stops video recording.
• 6 Color Mode Switch Button: Cycles through color palettes.
• 7 Picture-in-Picture/Brightness Button: Controls PiP display and screen brightness.
• 8 Menu Button: Accesses the device menu.
• 9 Power Button: Turns the device on/off or puts it in standby.
• 10 Digital Day/Night Focus Adjustment: Adjusts focus for the digital image.
• 11 Digital Day/Night Objective lens: The lens for the digital day/night camera.
• 12 Thermal Objective Lens: The lens for the thermal sensor.
• 13 Thermal Focus Adjustment: Adjusts focus for the thermal image.
• 14 Infrared Illuminator (IR Torch): Provides IR illumination for night vision.
• 15 Laser Rangefinder (LRF): Measures distance to the target.
• 16 Battery Compartment: Houses the 18650 battery.
• 17 Ranging Button: Activates the laser rangefinder.
• 18 Day/Night & Thermal Mode Toggle Button: Switches between imaging modes.
• 19 18650 Battery: The power source.
• 20 Battery Cap: Secures the battery.
• 21 USB-C Port: For data transfer and external power.
• 22 Side Cap: Protects the USB-C port.
• 23 Mount: For attaching the scope to a firearm or other equipment.

Power Supply

The device is powered by an external 18650 battery (flat-top), providing up to 5 hours of operation time (when the IR Illuminator is off). The TNC225R can also be powered using a USB power supply via the USB-C port. Note: The USB-C port does not charge the 18650 battery.

Installing the 18650 Battery

1. Unscrew the Battery Cap (20).
2. Insert the 18650 battery (19) into the battery compartment, positive side first.
3. Screw the Battery Cap (20) tight until the end of the thread.

USB-C Data Transfer

1. Turn on the TNC225R.
2. Remove the Side Cap (22).
3. Plug a USB-C cable into the TNC225R USB-C port (21). The TNC225R will connect to your computer as a USB drive.
4. Copy recorded videos to your PC or portable hard drive before browsing.

Note: When connected to a laptop/PC, find the DNT drive to check the video clips under its directory.

Removable Infrared Illuminator (IR Torch)

Rotate the IR Illuminator counter-clockwise to remove it from the TNC225R body. Rotate clockwise to re-install the IR Illuminator. The IR head can move in and out to adjust the beam size and intensity of focus.

Note: The scope is compatible with 850nm or 940nm wavelength IR Illuminators (14).

Control Description

Detailed control functions are available via short press, long press, or rotation of various buttons:

• Power Button (9): Off, Standby, Wake-up.
• Menu Button (8): Accesses menu, moves cursor up/left, enters menu interface.
• Record Button (5): Starts/stops recording, moves cursor down/right.
• Color Mode Switch Button (6): Switches color modes, exits menu without saving.
• Picture-in-Picture/Brightness Button (7): Controls PiP, adjusts brightness, confirms selections, saves and exits.
• Magnification Wheel (4): Increases/decreases magnification.
• Ranging Button (17): Activates ranging, shows distance, accepts distance for ballistic calculation, turns off LRF.
• Day/Night & Thermal Mode Toggle Button (18): Switches between Day/Night and Thermal modes, switches between main and PiP display.

On Screen Display

The on-screen display provides various indicators:

• 1 Recording indicator: Shows current recording duration.
• 2 Picture In Picture window: Displays secondary view (Night Vision or Thermal).
• 3 PIP reticle: Reticle within the PiP window.
• 4 Range distance display: Shows measured distance.
• 5 PIP Ballistic Calculation Point of Aim: Aiming point for PiP.
• 6 Current magnification: Displays current zoom level (e.g., 12x).
• 7 Storage status: Indicates storage issues.
• 8 IR icon: Indicates Night Vision mode (black/white image). Bars on the right show IR Illuminator status and brightness (Levels 1-5).
• 9 WiFi: Indicates WiFi status (on/off).
• 10 Bluetooth: Indicates Bluetooth status (on/off/connected).
• 11 Microphone: Indicates if audio is included in recording.
• 12 Battery status: Visual representation of battery level (1-4 bars) or USB Powered.
• 13 Inclinometer: Shows device tilt.
• 14 Reticle: The primary aiming reticle.
• 15 Current time: Displays the current time.
• 16 Level indicator: Shows device level.
• 17 Ranging reticle: The reticle used for ranging.
• 18 Primary display: Main view (Digital Night Mode or Thermal).

Menu List

Access the menu by long-pressing the Menu Button (8) for 2 seconds. There are 12 selections:

• [Screen Brightness]: Adjusts screen brightness (levels 1-5).
• [Connections]: WiFi and Bluetooth settings.
• [Reticle Zeroing]: Performs reticle zeroing.
• [Digital/Thermal Switch]: Selects between Thermal, Digital Day/Night, and Dual (PiP) modes.
• [Ballistic Calculation]: Configures aiming methods (Holdover, Dial-In, Real Time Calculation).
• [Color Enhancement]: Adjusts digital Day/Night screen to natural or color enhanced image.
• [Thermal Imaging Mode]: Selects between Natural, Enhanced, and High Brightness thermal modes.
• [Thermal Imaging Image Configuration]: Adjusts thermal image color mode, contrast, brightness, sharpness, hotspot tracking, and dead pixel correction.
• [Recoil Activated Recording]: Sets recoil activated recording function to auto or manual.
• [Audio NO/OFF]: Turns microphone ON/OFF for audio recording.
• [Function Setting]: Configures Auto Power Off time, loop recording time, PiP window position, Gyroscope, and range units (m/yds).
• [System Setting]: Adjusts screen shifting, time stamp, date/time, system languages, formats storage, restores default settings, shows available storage and firmware version.

Main Function Description - Zeroing The Reticle

Zeroing the reticle ensures accurate aiming. The process involves adjusting the reticle position to match the point of impact.

Digital Day/Night Vision Zeroing (Example)

1. Aim at the target at the preferred zeroing distance. Adjust the Objective lens (12) for focus. Align the reticle on the target. Fire one round.
2. Keep the TNC225R steady and the reticle aimed at the original point of aim. Short press the Power Button (9) to freeze the current image.
3. Use the PIP/Brightness Button (7) to highlight X. Press Menu Button (8) to move the reticle right; press Record Button (5) to move left. Adjust to the point of impact if visible.
4. Press PIP/Brightness Button (7) to highlight Y. Press Menu Button (8) to move reticle up; press Record Button (5) to move down. Adjust to the point of impact.
5. Long press Color Mode Switch Button (6) to exit without saving. Long press PIP/Brightness Button (7) to save and exit.

Thermal Zeroing (Example)

Follow similar steps as Digital Day/Night Vision Zeroing, using the Thermal Objective lens (12) and ensuring the reticle aligns with the point of impact in the thermal view.

Dual Mode Reticle Zeroing (Example)

Ensure the Picture-in-Picture function is on. Aim at the target, adjust the Objective lens (12) for focus, and align the reticle. Freeze the image with the Power Button (9). Use the PIP/Brightness Button (7), Menu Button (8), and Record Button (5) to adjust the reticle's X and Y coordinates to match the point of impact.

Note: Once both digital and thermal reticles are zeroed at a specific distance, the point of aim may differ for closer or farther targets due to ballistics and scope height over bore. Screen Shifting can help align these points.

Screen Shifting

To adjust for image drift, long press the Menu Button (8) to enter the menu, navigate to "System Setting" > "Screen Shifting", and short press the Picture-in-Picture Button (7) to enter the image drift interface. Use the Color Mode Switch Button (6) or Picture-in-Picture Button (7) to move the digital Day/Night screen. Long press the Picture-in-Picture Button (7) for 2 seconds to save the setting when the digital and thermal targets align.

Picture-in-Picture Function

The default size of the secondary PiP window is 10% of the main screen. The PiP window can be positioned in the upper left, center, or upper right of the main screen via the Menu: Function Setting > Position of small window in Picture-in-Picture > Left / Center / Right.

Dual Mode

In Dual Mode, short press the Day/Night & Thermal Mode Toggle Button (18) to switch between displays. Figure (1) shows the main screen with the thermal channel and the PiP window displaying digital night vision. Figure (2) shows the main screen with digital night vision and the PiP window displaying the thermal channel.

Day/Night Vision Mode & Thermal Mode

In this mode, the PiP window magnification defaults to 2 times that of the large window. Short press the Day/Night & Thermal Toggle Button (18) to switch between Figure (1) and Figure (2).

Range Finding

The Laser Rangefinder (LRF) measures distance. Ensure Ballistics Calculation is set to OFF for basic distance measurement.

• Short press the Ranging Button (17) to activate the distance measuring function. The Ranging Icon (17) will appear and display the current range distance (4). The device will continuously measure distance until the Ranging Button is pressed again.
• Another short press or a long press of the Ranging Button (17) for 1.5 seconds will turn off the distance measurement function. The Ranging Icon (17) and distance reading will disappear.

Ballistic Calculation

Real Time Calculation

Enter the menu, select "Ballistic Calculation" > "Ballistic Calculation" > "Real Time Calculation". Range your target using the Ranging Button (17). The device will calculate the ballistic drop based on the LRF distance and send it back. If "Hold Over" is set, a box will show where to aim. If "Dial-In" is chosen, the reticle will shift position.

Ballistic Table

Enter the menu, select "Ballistic Calculation" > "Ballistic Table". Ensure Bluetooth is on and connected to the device. Click the Send icon to update the APP Ballistic Table to the device. The TNC225R will then calculate ballistics without needing a constant Bluetooth connection.

Note: Ballistic Calculation requires creating a ballistic profile based on your rifle and ammunition.

Aiming Method - Holdover

Enter the menu, select "Ballistic Calculation" > "Aiming Method" > "Holdover". Activate ranging with the Ranging Button (17). Aim the Ranging Icon at your target. Press the Ranging Button again to accept the distance; the Ballistic Calculator will create an aiming solution. The Ranging Icon (17) will be replaced with the newly calculated point of aim. Align this with your target. Long press the Ranging Button for 1.5 seconds to turn off the LRF.

Aiming Method - Dial-in

Enter the menu, select "Ballistic Calculation" > "Aiming Method" > "Dial in". Activate ranging with the Ranging Button (17). Aim the Ranging Icon at your target. Press the Ranging Button again to accept the distance; the reticle will move to your newly calculated point of aim. Use this new position as your aiming point. Long press the Ranging Button to turn off the LRF; the reticle will return to its zeroed position.

Ballistic Calculation in Dual Mode

Ballistic Calculation in Dual Mode ensures that thermal and digital points are aligned when zeroed at the same target distance.

• Zero Digital Night Vision and Thermal at a distance of 30 meters.
• Aim at your target.
• Perform Ballistic Calculation and confirm the point of aim for Digital Night Vision and Thermal are the same.

FCC Warning

This device complies with part 15 of the FCC Rules. Operation is subject to two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.

If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

Compliance marks: CE, FCC, RoHS, UKCA.