2.Precautions
© China Daheng Group, Inc. Beijing Image Vision Technology Branch 3
2.
Precautions
2.1.
Guideline for Avoiding EMI and ESD
You should consider the EMI (Electro Magnetic Interference) and ESD (Electro-Static discharge) problem
in the process of using the camera, to guarantee the camera to work in a relatively good electromagnetic
environment. The main measures are as follows:
1)
USB cables certificated by USB IF with lock screw are recommended.
2)
Using shielded cable can avoid electro-magnetic interface. Shielding layer of the cable should conduct
to ground nearby and not until stretched too long. When many devices need conduct to ground, using
single point grounding to avoid earth loop.
3)
Keep your cameras away from equipment with high voltage, or high current (such as motor, inverter,
relay, etc.). If necessary, use additional shielding.
4)
ESD (electro-static discharge) may damage cameras permanently, so use suitable clothing (cotton)
and shoes, and touch the metal to discharge the electro-static before operating cameras.
2.2.
Environmental Requirements
1)
Housing temperature during operation: 0°C ~ 45°C, humidity during operation: 10% ~ 80%.
Storage temperature: -20°C ~ 70°C.
2)
To avoid collecting dust in the optical filter, always keep the plastic cap on cameras when no lens is
mounted.
3)
PC requirement: Intel Core 2 Duo, 2.4GHz or above, and 2GB memory or above.
4)
USB3.0 host controller requirement: Intel controller integrated in mainboard is recommend. Select
Renesas controller if external frame grabber is needed.
5)
The cable must have a locking screw at the end of the device.
6)
Make sure that cameras are transported in the original factory packages.
2.3.
Camera Mechanical Installation Precautions
Camera installation requirements:
1)
The M3 screw and the camera should have a screw length between 2.5 and 2.7mm, and the M2 screw
and the camera should have a screw length between 3 and 3.3mm
2)
The M3 screw assembly torque ≤ 1N.M, and the M2 screw assembly torque ≤ 0.5N.M. If the screw
assembly torque is too large, it may cause the camera thread stripping.
