Watec Camera Monochrome High Resolution EIA WAT-902B

Watec EIA Camera Monochrome High Resolution WAT-902B

Description

The Watec WAT-902B is a compact, high-sensitivity monochrome CCD camera designed for low-light imaging applications. It utilizes a 1/2-inch interline transfer CCD sensor and delivers high horizontal resolution with low noise performance. The camera supports EIA (NTSC) video output and is commonly used in industrial inspection, surveillance, scientific imaging, and machine vision environments where reliable grayscale imaging and high sensitivity are required.

Key characteristics include ultra-low minimum illumination capability, automatic gain control (AGC), electronic iris/shutter control, and backlight compensation. The unit outputs standard composite video and is compatible with CS-mount lenses, making it adaptable to a wide range of optical setups.

Core Specifications (EIA version)

Image Sensor & Format

• Sensor type: 1/2" interline transfer CCD
• Total pixels: 811 (H) × 508 (V)
• Effective pixels: 768 (H) × 494 (V)

Scanning & Synchronization

• Scanning system: 2:1 interlace
• Synchronization: Internal

Resolution & Video Output

• Horizontal resolution: >570 TV lines (center)
• Video output: Composite video, 1.0 Vp-p, 75Ω (unbalanced, RCA/BNC depending on version)

Sensitivity / Illumination

• Minimum illumination:
  • 0.003 lux (F1.4, AGC high)
  • 0.03 lux (F1.4, AGC low)

Signal Quality

• Signal-to-noise ratio: >50 dB (AGC off, γ=1.0)

Electronic Control Functions

• Electronic iris (AE mode):
  • 1/60 sec to 1/100,000 sec (EIA)
• Flickerless mode: 1/100 sec
• AGC:
  • High: 5–32 dB
  • Low: 5–20 dB
  • Off: fixed 10 dB
• Gamma correction: γ ≈ 0.45 (ON), 1.0 (OFF)
• Backlight compensation: ON/OFF selectable

Lens & Interface

• Lens mount: CS-mount (C-mount via adapter)
• Iris control: Video auto-iris
• Connectors: Video out, power input, auto-iris

Electrical

• Power supply: DC 12V ±10%
• Power consumption: ~1.74 W (approx. 145 mA)

Environmental

• Operating temperature: −10°C to +40°C
• Storage temperature: −30°C to +70°C
• Humidity: ≤95% (non-condensing)

Physical

• Dimensions: approx. 35.5 × 36 × 58 mm
• Weight: approx. 90 g

Summary

The WAT-902B (EIA) is a high-performance analog monochrome camera optimized for low-light conditions, delivering >570 TVL resolution and exceptional sensitivity down to 0.003 lux. Its combination of compact form factor, robust analog output, and flexible exposure/gain controls makes it suitable for demanding industrial and surveillance imaging systems requiring reliable grayscale performance.

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