NVP Series Thermal Imaging Riflescopes — User Manual

1.1Warnings

1.2Cautions

NVP series thermal imaging riflescopes are day-and-night sighting devices combining thermal observation, laser rangefinding and ballistic computation, intended for hunting, law enforcement and target observation. The device forms images from infrared radiation in total darkness, smoke, rain or fog; the built-in laser rangefinder acquires target distance and, together with ballistic parameters, computes the point of impact in real time to support precise shooting.

2.1Key Features

• High-sensitivity IR detector with six image palettes (White Hot, Black Hot, Red Hot, Fusion, Iron Red, Green Hot)
• Electronic zoom, picture-in-picture local magnification, four scene image modes
• Built-in laser rangefinder with single/continuous modes; LRF cursor position calibratable
• 20 zeroing profiles (A–T) for quick switching between rifle/ammunition combinations
• Ballistic functions: CALC mode computes the point of impact in real time; CALIBRATION mode uses shot-table data
• Selectable reticle type and color; electronic reticle offset adjustment
• Hotspot tracking automatically marks high-temperature targets
• Electronic compass and attitude sensors with automatic slope/cant compensation
• Photo, video recording and recoil-activated pre-record video
• Wi-Fi phone-app connection for live video and device management
• Image aids: PIP, freeze frame, defective-pixel correction, burn protection

2.2Model Coverage

This manual applies to all NVP series thermal riflescopes. Per the product specification, the series covers 384 and 640 detector platforms with three lens options (25–50 mm):

• Thermal imaging riflescope ×1
• 18650 battery (3400 mAh) ×1
• Charger / USB-C cable ×1
• Mounting ring (30 mm) / mounting accessories
• Lens cloth ×1
• Carrying case ×1
• User manual ×1
• Warranty card ×1

4.1Main Components

1. Objective lens (IR) and lens cap
2. Focus ring
3. LRF emitter/receiver windows
4. Power button (POWER)
5. Rangefinder/record button (LRF/REC)
6. Encoder (KNOB, rotate & press)
7. Eyepiece with diopter ring
8. Battery compartment cover
9. USB-C port (charging/data)
10. Mounting ring interface (30 mm)

4.2Controls Overview

5.1Battery & Charging

1. Open the battery cover, insert the 18650 battery observing polarity marks, and close the cover firmly.
2. Charge via the USB-C port (or the supplied charger) when low. A charging indicator appears in the status bar.

5.2Power On/Off

• Power on: long-press POWER; the observation screen appears after the splash.
• Sleep/wake: short-press POWER on the observation screen to sleep; press again to wake.
• Power off: long-press POWER for the confirmation dialog (in the dialog: short press = confirm, long press = cancel).

5.3Diopter & Focus

• Rotate the diopter ring on the eyepiece until on-screen text and reticle are sharp.
• Aim at the target and rotate the objective focus ring until the image is sharp.

5.4First-Time Setup

Open General Settings and configure:

1. Language: UI language (Chinese, English, German, French, Russian, Polish, Italian, Swedish, Spanish, Czech, Slovak, Portuguese, Hungarian, Korean, etc.).
2. Time: date and time.
3. Time Format: 24-hour / 12-hour.
4. Distance Unit: meters (m) / yards (yd).

Main elements of the observation screen after power-on:

• Top status bar: palette, zoom, LRF status, ballistic mode, recording, Wi-Fi, battery icons.
• Compass: azimuth scale at the top of the frame (N/E/S/W plus NE/SE/SW/NW — eight directions).
• LRF readout: shows target distance while ranging, in m or yd per the unit setting.
• Reticle: shows the selected type and color when zeroing is on.
• Ballistic info bar: with ballistics on and a valid range — "bullet drop xx cm" and "wind drift ±x cm".
• Impact marker: after computation — an X-shaped marker below the reticle plus a windage dot column.
• Off-screen impact warning: "Impact off screen" appears when the computed point leaves the field of view.
• Record timer: elapsed recording time while filming.
• PIP window: local magnification independent of the main zoom.

6.1OSD Icon Legend

Icons below are taken from the actual device interface:

Icon	Name	Meaning
	LRF indicator	Laser rangefinder active / continuous ranging
	Zoom indicator	Current electronic zoom level
	Wi-Fi	Hotspot enabled
	Compass indicator	Electronic compass/attitude display on
	Battery	Battery level (shown full)
	Charging	Device charging
	Recording	Video recording in progress
	Low battery warning	Battery running low
	Hotspot cursor	Marks hot areas when tracking is on
	HD indicator	HD mode on
	Freeze indicator	Frame frozen
	Ballistic cursor	Computed point of impact
	Pitch angle	Vertical angle from attitude sensor
	Azimuth	Azimuth scale marker
	Roll angle	Weapon roll angle
	Target cursor	Auxiliary cursor for target setting

7.1Buttons on the Observation Screen

7.2Common Menu Operations

The device menu is cyclic: rotating past the last item returns to the first.

Toggle items (PIP, clip-on, freeze, hotspot tracking, pre-record, Wi-Fi, burn protection, OSD, etc.) switch on/off with a short press or rotation when selected.

Long-press the encoder on the observation screen to open the main menu. Items in menu order:

8.1Brightness

Adjusts thermal image brightness, 1–5, default 3. Affects the sensor image channel, not the OLED backlight.

8.2Contrast

Adjusts image contrast, 1–5, default 3. Higher values increase target-to-background differentiation.

8.3Display Brightness

Adjusts the OLED display backlight, 1–10, default 5. Affects display brightness only, not imaging parameters.

8.4Picture-in-Picture (PIP)

When on, a local magnified window appears at the top of the screen, referenced to the reticle/frame center, with independent zoom. Useful for aim verification. Off restores the full view.

8.5Front Sight (Clip-on)

Clip-on working mode: the device acts as a thermal attachment in front of a day scope — the image area shrinks to match the front scope's field of view. In clip-on settings, adjust magnification and X / Y coordinates to align the thermal image with the host reticle.

8.6Sharpness

Adjusts image sharpness, 1–5, default 3.

8.7Scene Mode

Choose an image enhancement strategy for the environment:

• Plain: general observation in open terrain;
• Jungle Mode: dense vegetation with small temperature differences;
• Bird: small high-temperature targets;
• Stone: cold, low-contrast scenes.

8.8Zeroing Profile

Quickly switch the zeroing profile — letters A–T, 20 total. Each stores independently: zero range, zeroing curve points (distance+X/Y), reticle type, reticle color and shot-table calibration. Create profiles for different rifles, ammunition or shooters.

8.9Freeze

Freeze/unfreeze the live image. A frozen frame stays still, handy for inspecting the target or zeroing without changing framing.

8.10Zeroing

Opens the zeroing submenu — see Chapter 9.

8.11Ballistic Calculator

Switch the ballistic working mode:

• OFF: computation disabled, reticle only;
• CALC: computes the point of impact from parameters in real time;
• CALIBRATION: shows impact points from the shot table (see Chapter 10).

8.12Rangefinder

Set the laser rangefinder mode:

• Single: each short LRF press measures once and shows the distance;
• Continuous: readings refresh in real time; long-press LRF to exit.

Measured distances are also fed to the ballistic solver.

8.13Zoom

Adjusts electronic zoom (same as rotating the encoder), 1.0×–8.0×, step 1.0×.

8.14Hotspot Tracking

Automatically detects and marks hot areas in the frame to find heat sources quickly.

8.15Pre-record Video

When on, the device continuously buffers the image; on recoil (shot) detection it auto-saves a clip spanning the moments before and after the shot — "Recoil video enabled" is shown.

8.16Wi-Fi

Wi-Fi on/off. When on, the Thermal Kit app (Chapter 12) connects to the device hotspot for live video, media browsing and settings.

8.17Function Settings

Opens the function-settings submenu:

Item	Description
Burn Protection	On/off. When on, protects the detector from intense heat sources
Defective Pixel Correction	Manual repair of defective pixels: move X/Y onto the pixel and execute
OSD	On/off the on-screen information display
Shutter Mode	Auto / manual. Auto runs shutter calibration per device policy; manual uses POWER+LRF
Compass	Compass calibration: figure-8 swing (follow prompts) + flat calibration (rest on a level surface)
Laser Cursor Calibration	Aligns the LRF cursor with the actual laser spot on screen
Icon Color	OSD icon color scheme and brightness (25%/50%/75%/100%)

8.18General Settings

Item	Description
Language	14 interface languages
Time	Y/M/D/h/min settings
Time Format	24-hour / 12-hour
Distance Unit	meters / yards
Device Information	Model, firmware version, serial number
Format	Format internal storage (photos/videos are erased)
Factory Reset	Restore all parameters to factory defaults

8.19HD Mode

Enables super-resolution image processing for finer detail.

8.20CVBS Analog Video Output

Outputs the live image to an external monitor via the video-out interface.

Zeroing maps the reticle to the rifle's actual point of impact. Each profile stores its own set of zeroing data — switch profiles when changing rifles or ammunition.

9.1Zeroing Submenu

Main menu → Zeroing opens the zeroing screen with a cyclic submenu:

#	Menu item	Description
1	Ballistic Settings	Ballistic parameters/calibration panel (Chapter 10)
2	Profile	Select the profile A–T for this session
3	Distance	Set the zeroing distance, 10–500 m (shown in m/yd per unit)
4	Reticle Type	Select the reticle pattern
5	Reticle Color	Reticle color: auto-invert / black / white / red / green / blue / yellow
6	Zeroing Zoom	Frame zoom for zeroing: 1.0×/2.0×/4.0×/8.0×
7	Freeze	Freezes the frame to move the reticle onto the POI
8	Reticle Coordinates	Adjust reticle X/Y coordinates

9.2Zeroing Procedure

1. Select profile. Open "Profile" and rotate the encoder to pick one (A–T).
2. Set distance. In "Distance", enter the actual shooting distance (10–500 m; rotate = 1 m/step, hold+rotate = 5 m/step). This doubles as the "zero range" in ballistics.
3. Test fire. Following safety rules, fire a group (3 shots recommended) at the set distance and find the mean point of impact.
4. Freeze (optional). Freeze the frame so it stays still while moving the reticle.
5. Move the reticle. In "Reticle Coordinates": short-press toggles X / Y, rotate to adjust (hold+rotate = coarse). Move the reticle center onto the actual point of impact.
6. Save & exit. Long-press to save and quit. Confirm with another shot; repeat step 5 if needed.

9.3Zeroing Notes

• Reticle X/Y travel is limited to the central area (about 3/4 of the detector frame); the reticle stops at the boundary — normal.
• Zeroing zoom allows finer coordinate adjustment.
• Keep "Zero Range" in ballistic settings consistent with the zeroing distance; changing the zeroing distance updates it automatically.
• Zeroing data persists across power cycles, per profile.

10.1Function Overview

Ballistic functions have three levels — do not confuse them:

Both CALC and CALIBRATION rely on the laser rangefinder: the measured distance is automatically used as the current target range.

10.2Ballistic Settings

Menu → Zeroing → Ballistic Settings opens the parameter panel. Parameters are stored in Profile groups — 5 total (A–E), for different ammunition/rifles.

All panel parameters (rotate = focus, short press = edit, rotate = change, short press = save):

10.3Using CALC Mode

1. Zero first. Complete basic zeroing for the profile per Chapter 9.
2. Set parameters. In Ballistic Settings pick a group (A–E) and enter muzzle velocity, BC, drag model, sight height, zero range and bullet data accurately; enable atmosphere/wind/spin-drift corrections as needed.
3. Enable ballistics. Menu → Ballistic Calculator → CALC.
4. Range the target. The result feeds the solver automatically.
5. Read the impact. The screen shows in real time:
   • the X-marker position below the reticle;
   • the info bar "bullet drop xx cm / wind drift ±x cm";
   • the dot column for lateral drift;
   • if the computed point leaves the field of view, "impact off screen" appears — aim with the reticle center using the info-bar values, or check zero range and parameters.
6. Engage. Aim with the impact marker (not the reticle center); with reticle-style display, aim by the computed reticle position.

Slope & Cant

With compensations on, the device solves using live attitude angles: elevation (up/down slope) and cant (rifle roll) both shift the impact. Keeping the same hold as during calibration improves accuracy.

10.4CALIBRATION Mode (Shot Table)

Calibration uses no formulas: measured impact offsets at real distances are entered point by point, and during firing the table is looked up by measured range. Suited to ammunition lacking precise data or outside formula coverage.

Table structure: one table per profile; range 10–150 m; step 5 or 10 m; up to 29 points. Values are stored as offsets from the current zero — re-zeroing shifts the table with the reticle and it stays valid.

Entry: select "Calibration" in Ballistic Calculator, then Zeroing → Ballistic Settings — the calibration panel:

Calibration steps:

1. Complete basic zeroing of the profile at the zero range (short distance recommended, e.g. 50 or 100 m).
2. Set Ballistic Calculator = CALIBRATION, then Zeroing → Ballistic Settings → calibration panel.
3. Set the distance step (5 m is denser, 10 m is faster).
4. Fire a group at a real distance (e.g. 100 m) and find the mean point of impact.
5. Select that distance in "Distance", move the marker ("Reticle Coordinates") onto the actual POI, and save.
6. Repeat per distance to cover your working range.
7. After exiting (long press) the table takes effect: ranging shows the POI of the nearest calibrated point. Uncalibrated distances show no marker.

10.5Ballistic Display Elements

10.6Ballistic Notes

• Zero before ballistics. All ballistic output builds on the current profile's zeroing data — poor zero means poor impact.
• Honest parameters. Accuracy depends on inputs (velocity, BC, sight height) matching the real ammunition; measure actual velocity when possible.
• CALC vs CALIBRATION. Only one mode is active at a time.
• Range source. The marker uses the latest measurement; none without ranging.
• Units. Changing m/yd converts zeroing and ballistic distances automatically.
• Disclaimer. Ballistic computation is an aid, not a guarantee. Verify by live fire when changing ammunition, after large temperature swings, or after switching profiles.

Internal storage: 64 GB.

1. Main menu → turn Wi-Fi on.
2. Find and join the device hotspot on your phone (SSID like CNEV-********).
3. Open the companion app Thermal Kit (downloads below): live video, photo/video capture, settings and file management.

Thermal Kitv0.95.9iOS / Android

Official companion app: live video, remote photo/video capture, settings and media file management.

App Store ↗ Google Play ↗ Android APK ↗

• Clean objective and eyepiece with lens cloth/blower only — no organic solvents.
• Wipe the body with a slightly damp soft cloth; do not immerse — IP66 rated.
• Remove the battery for long-term storage; store in a dry, cool place.
• Fixed bright/dark pixels can be repaired via Function Settings → Defective Pixel Correction.
• For ghosting or vertical stripes, run a manual shutter calibration (POWER+LRF).
• If the compass reads wrong, run compass calibration (figure-8 + flat).
• If LRF readings and cursor position disagree, run Laser Cursor Calibration.

Series-wide specifications; model-dependent values are in §2.2 Model Coverage.

16.1Main menu (cyclic)

16.2Zeroing submenu (cyclic)

16.3Ballistic settings panel (list)

16.4Calibration panel (CALIBRATION mode)

16.5Function settings submenu

16.6General settings submenu