SNQ-38581F (EN781+IMX335) Technical Overview
6-in-1 Video Output 5MP Camera Module with Auto Focus & 120dB WDR
The SNQ-38581F is a high-end camera module engineered for integration into professional surveillance systems and OEM equipment. It leverages a Sony IMX335 STARVIS™ sensor to deliver 5MP resolution and superior low-light performance from a 1/2.8-inch optical format. Its defining characteristic is user-selectable video output across six major protocols: AHD, TVI, CVI, CVBS, HD-SDI, and EX-SDI. Advanced image processing includes WDR (120dB), Defog, and 3D-DNR, making it a robust solution for the most demanding security, traffic, and industrial monitoring applications.
In-Depth Technical Analysis
1. Multi-Format Output & Switching
The module's output is configurable via two methods: a DIP-switch on the control cable (SNQ-043) or a long-press of the confirmation button on another cable type (SNQ-034). This covers all modern analog HD formats (AHD, TVI, CVI), standard definition (CVBS), and digital outputs (HD-SDI, EX-SDI) for maximum integration flexibility. EX-SDI supports transmission up to 350 meters with appropriate cabling.
2. Optical Performance & Sensor
The Sony IMX335 is a 1/2.8-inch CMOS sensor with a 6.52µm large pixel size (post-binning for 5MP output), contributing to its exceptional sensitivity, achieving starlight-level imaging (0.00008 Lux). This is further enhanced by Frame Accumulation (Sens-Up) technology, which can be set from Off to X32. Electronic shutter control ranges from 1/25s to 1/12,800s.
3. Advanced Image Processing
-
Wide Dynamic Range (120dB): Utilizes multi-frame exposure processing to resolve critical detail in scenes with extreme contrast, such as entrances with bright backgrounds.
-
Advanced DEFOG Algorithm: Implements intelligent digital image enhancement to mitigate atmospheric scattering caused by fog, haze, and mist, ensuring reliable monitoring in adverse weather.
-
3D Digital Noise Reduction (3D-DNR): Employs temporal (frame-to-frame) and spatial noise reduction techniques to suppress noise in low-light footage, resulting in a cleaner, more usable image.
4. System Integration & Control
-
Auto Focus Driver: Integrated driver supports varifocal motorized lenses. Features Auto/Manual focus modes and an INITIAL function for calibration.
-
Comprehensive OSD Menu: Offers extensive parameter adjustment (Shutter, Gain, WDR, BLC/HLC, Privacy Masking, AF settings) accessible via coaxial control from compatible DVRs. Includes a hidden menu for setting factory defaults.
-
Standard Integration: The 38x38mm size with standard mounting holes and clearly labeled connectors (POWER, IR-CUT, FOCUS, ZOOM, RS-485, SDI) ensures easy integration into various housings and systems.
Detailed Technical Specifications Table
| Category |
Parameter |
Detail |
| General |
Model |
SNQ-38581F |
| |
Platform |
EN781 + IMX335 |
| |
PCB Dimensions |
38mm x 38mm x 1.6mm |
| Sensor |
Type |
1/2.8" Sony IMX335 CMOS |
| |
Total Pixels |
5.69 Megapixels |
| |
Effective Pixels |
5.14 Megapixels (2616x1964) |
| |
Scan System |
Progressive |
| Video |
Max Resolution |
2592 x 1944 @ 20fps |
| |
Video Output |
Switchable: AHD / TVI / CVI / CVBS / HD-SDI / EX-SDI |
| |
S/N Ratio |
>42 dB (AGC OFF) |
| Low Light |
Min. Illumination |
0.00017 Lux (Color), 0.00008 Lux (B/W) |
| |
Sens-Up |
Off, x2, x4, x8, x16, x32 |
| |
Day/Night |
Auto (ICR), Color, B/W, External (CDS) |
| Image Features |
WDR |
Yes, 120dB (Off / Low / Mid / High) |
| |
DEFOG |
Yes (Off / Low / Mid / High) |
| |
DNR |
3D-DNR (Off / Low / Mid / High) |
| |
Privacy Mask |
Up to 16 zones |
| Lens & Focus |
Control |
Auto & Manual Focus supported |
| Interface |
Control |
Coaxial OSD, RS-485 |
| Power |
|
DC 12V (±10%), <1.6W |
| Operating Temp. |
|
-20°C ~ +60°C |
