240E CB G3.8
The Watec WAT-240E/CB (G3.8) is a compact 1/4-inch color CMOS camera with a built-in 3.8 mm miniature lens and composite BNC video output. It provides 648 × 488 effective pixels, progressive scanning, and horizontal resolution exceeding 480 TV lines at the center of the image.
Minimum illumination is 0.3 lx at F2.0 with AGC at 42 dB. The cylindrical camera measures approximately 18 mm in diameter and 54.6 mm long, weighs approximately 33 grams, and operates from a DC 5–6 V power supply.
The Watec WAT-240E/CB (G3.8) is a compact miniature color camera designed for installations where available space is limited. Its 1/4-inch CMOS image sensor provides 648 × 488 effective pixels, progressive scanning, and composite analog video through a BNC connection.
The cylindrical camera includes a built-in M12 miniature lens and is suitable for documented applications including general surveillance, embedded systems, and image-processing systems.
Color Imaging Performance
The WAT-240E uses an RGB primary-color Bayer mosaic filter and provides horizontal resolution exceeding 480 TV lines at the center of the image. Its signal-to-noise ratio exceeds 52 dB with AGC at 0 dB and gamma at 1.0.
Minimum illumination is 0.3 lx at F2.0 with AGC at 42 dB. Automatic gain control operates from 0 to 42 dB, while automatic tracking white balance covers a color-temperature range of 2500 K to 9000 K.
Composite Analog Video
The camera provides a 1.0 Vp-p, 75-ohm unbalanced composite-video signal through its BNC output. NTSC and PAL versions are documented. The NTSC automatic-exposure range is 1/60 to 1/100,000 second, while the PAL range is 1/50 to 1/100,000 second.
Automatic Imaging Controls
Automatic tracking white balance adjusts color reproduction across the documented 2500 K to 9000 K range. Backlight compensation is enabled, the gamma characteristic is approximately 0.45, and the video level is specified at 85 IRE.
Built-In Miniature Lens
The standard 3820BC-12 miniature lens has a 3.8 mm focal length and F2.0 aperture. The camera uses an M12 P=0.5 lens mount, and additional Watec M12 miniature lenses are available for other optical requirements.
Compact System Integration
The WAT-240E measures approximately 18 mm in diameter and 54.6 mm long and weighs approximately 33 grams. A ring holder is included for mounting the cylindrical camera. The optional H002 holder and MS50 miniature stand provide additional installation options.
The camera operates from DC 5–6 V and consumes approximately 0.66 W or 110 mA at 6 V. Its operating-temperature range is -10°C to +50°C, with operating and storage humidity of 95% RH or less without condensation. The WAT-240E is designed for indoor use and is not water-resistant or waterproof.
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Specifications
| Specification | WAT-240E/CB (G3.8) |
|---|---|
| Camera Type | Miniature analog color camera with built-in lens |
| Video Standards | NTSC and PAL versions |
| Image Sensor | 1/4-inch CMOS |
| Effective Pixels | 648 (H) × 488 (V) |
| Unit Cell Size | 5.6 µm × 5.6 µm |
| Imaging System | RGB primary-color Bayer mosaic filter on chip |
| Synchronization | Internal |
| Scanning System | Progressive |
| Video Output | BNC composite video, 1.0 Vp-p, 75 Ω unbalanced |
| Horizontal Resolution | More than 480 TV lines at image center |
| Minimum Illumination | 0.3 lx at F2.0, AGC at 42 dB |
| Signal-to-Noise Ratio | More than 52 dB with AGC at 0 dB and gamma at 1.0 |
| NTSC AE Range | 1/60 to 1/100,000 second |
| PAL AE Range | 1/50 to 1/100,000 second |
| White Balance | Automatic tracking white balance, 2500 K–9000 K |
| Automatic Gain Control | 0–42 dB |
| Gamma Characteristic | Approximately 0.45 |
| Video Level | 85 IRE |
| Backlight Compensation | On |
| Lens Mount | M12 P=0.5 |
| Standard Lens | 3820BC-12, 3.8 mm, F2.0 |
| Power Supply | DC 5–6 V |
| Recommended Voltage Range | DC 4.6–6.6 V |
| Power Consumption | 0.66 W / 110 mA at 6 V |
| Operating Temperature | -10°C to +50°C |
| Storage Temperature | -30°C to +70°C |
| Operating/Storage Humidity | 95% RH or less, without condensation |
| Dimensions | Approximately Ø18 × 54.6 mm |
| Weight | Approximately 33 g |
| Included Accessory | Ring holder |
| Environmental Use | Indoor use; not water-resistant or waterproof |
| EMC | NTSC: FCC Part 15 Class B; PAL: EN 61000-6-3 and EN 50130-4 |
FAQ
What is the WAT-240E?
The WAT-240E is a miniature analog color camera with a 1/4-inch CMOS sensor, built-in M12 lens, and composite BNC video output.
What resolution does the WAT-240E provide?
The camera provides 648 × 488 effective pixels and horizontal resolution exceeding 480 TV lines at the center of the image.
How sensitive is the WAT-240E in low light?
Minimum illumination is 0.3 lx at F2.0 with automatic gain control at 42 dB.
What video output does the WAT-240E use?
The camera provides a 1.0 Vp-p, 75-ohm unbalanced composite-video signal through a BNC connector. NTSC and PAL versions are documented.
What lens is supplied with the WAT-240E?
The standard 3820BC-12 miniature lens has a 3.8 mm focal length and F2.0 aperture. The camera uses an M12 P=0.5 lens mount.
How is the WAT-240E powered?
The camera operates from DC 5–6 V and consumes approximately 0.66 W or 110 mA at 6 V. A stabilized DC 6 V power adaptor with a current capacity greater than 300 mA is specified.
What are the dimensions and weight of the WAT-240E?
The cylindrical camera measures approximately 18 mm in diameter and 54.6 mm long. It weighs approximately 33 grams.
Can the WAT-240E be used outdoors?
The WAT-240E is designed for indoor use and is not water-resistant or waterproof. Outdoor and outdoor-like installations require a suitable camera housing.
What mounting accessories are available?
A ring holder is included. The H002 holder and MS50 miniature stand are available as optional mounting accessories.