HD CMOS Camera Module with FH7440 Sensor
Highly recommended doorbell camera module ! Combined the advantages of good quality but cheap price, Auto AGC, BLC, 3.6mm lens, 6pcs 650 Led, size selectable
Description
Reviews
Product features
1.The lens circuit board is free from distortion, clean and free of dirt, no false soldering, soldering point, bright, all visible symbols are clearly visible, and the focal length is clear.
2. The image is clear, the colour reproduction is perfect, and there is almost no colour cast.
3. The brand-new digital exposure function can obtain good image effect in the case of different light and contrast.
4. High temperature resistance, dark level is very stable under high temperature work, and there is no black vertical bar or white bright line in night vision.
5. Anti-static interference circuit design, -20 ~ 70 ℃ working temperature range, fundamentally improve the equipment's environmental adaptability.
6. A grade plate, veneer immersion gold process, signal transmission is more stable and reliable.
7. Each product undergoes rigorous aging tests, and the materials of international brands are extremely stable.
FH7440 HD Doorbell Camera Module Model: MT8401-55
Structural size unit (mm)
1: PCB size :38mmX55mm (38mmX38mm available after cutting), back height with components assembled less than 2.5mm.
2: Circular hole with PCB aperture of φ3.0mm (four positioning holes)
3: 6pcs white LED
4: The distance from lens to PCB surface is 22mm±0.5mm.
5: The distance from top of the led to the surface of PCB is 22mm±0.5mm
Environmental and electrical parameters
1: Temperature: -20 ° C ~ +70 ° C
2: Working voltage: DC 8V~ 13V (Typ 12V)
3: Working currency: 33mA±5mA
4: The output impedance of the video interface should be 70Ω~80Ω (1Vp-p, 75Ω);
Image and lens specifications
1: Colours on the standard colour card should be distinguished through the camera image under the condition that the illuminance is greater than 0.2 LUX, and the colour from the monitor image should be consistent with the colour of the colour card.
2: The horizontal resolution of the camera is 600TVL.
3: Lens focal length 3.6mm, diagonal angle 90〬
4: Lens relative aperture 2.0
5: Lens effective pixel 2MP
6: Lens sensitivity wavelength 650nm
Specific parameters
Camera component: 1/4′′ CMOS FH7440 sensor
Image format: PAL/NTSC
PAL pixel: 652 (H) × 582 (V)
NTSC pixels: 652 (H) × 492 (V)
Synchronization mode: built-in synchronization
Horizontal resolution: 600TVL
Signal to noise ratio: >45dB
Minimum illumination: 1.0LUX
Backlight compensation: turn on
Electronic shutter: 1/50Sec-1/10000Sec
White balance: automatic
Gamma correction: >0.45
Video output: 1.0Vp-p 75ohm
Power required: DC12
Currency consumption: 33mA ± 5mA
Lens equipped: 3.6mm
Quality control method
1. The camera examination should meet requirement of NO.1;
2. Using the calliper to measure the size of the camera, positioning holes, lens height and others, which should meet the requirements of 2;
3. The camera is connected to the display module or the displayer for detection, and the image cant appear the phenomenon such as distortion;
4. When the camera is working, using the oscilloscope to measure the video output amplitude of the video signal: 0.8~1.2VP-P/75Ω;
5. When the camera is connected to the displayer, and the standard colour card is placed 0.8 meters in front of the camera, the image on the observation monitor should be consistent with the real scene;
6. High and low temperature test
The temperature is maintained at 70 ° C for 2 h, the normal energy is applied, and the temperature is negative at 30 ° C for 2 h, the power-on test can work normally;
7. There must be no vignetting around the image;
8. Stability test, continuous aging for 24 hours, no failure should occur;
9. Camera minimum illumination test, camera minimum illumination reaches 1.0LUX. (no LED)
Test equipments used
1. Calliper with an accuracy of ±0.02mm
2. 24-colour standard colour card, grayscale comprehensive test chart
3. Camera module
4. Digital multimeter
5. Oscilloscope
6. DC regulated power supply, 14-inch colour monitor, lens with 3.6mm lens.
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