KR356H DVB-S2 HD IRD User Manual
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2.2.2 Environment Requirement
Item
Requirement
Machine Hall Space
When user installs machine frame array in one machine hall,
the distance between 2 rows of machine frames should be
1.2~1.5m and the distance against wall should be no less
than 0.8m.
Machine Hall Floor
Electric Isolation, Dust Free
Volume
resistivity
of
ground
anti-static
material:
1X10
7
~1X10
10
, Grounding current limiting resistance: 1M
(Floor bearing should be greater than 450Kg/
㎡
)
Environment
Temperature
5~40
℃
(sustainable ), 0~45
℃
(short time)
，
installing air-conditioning is recommended
Relative Humidity
20%~80% sustainable 10%~90% short time
Pressure
86~105KPa
Door & Window
Installing rubber strip for sealing door-gaps and dual level
glasses for window
Wall
It can be covered with wallpaper, or brightness less paint.
Fire Protection
Fire alarm system and extinguisher
Power
Requiring device power, air-conditioning power and lighting
power are independent to each other. Device power requires
AC power 100-240V 50-60Hz. Please carefully check before
running.
2.2.3 Grounding Requirement
⚫
All function modules’ good grounding is the basis of reliability and stability of devices.
Also, they are the most important guarantee of lightning arresting and interference
rejection. Therefore, the system must follow this rule.
⚫
Coaxial cables outer conductor and isolation layer should keep proper electric
conducting with the metal housing of device.
⚫
Grounding conductor must adopt copper conductor in order to reduce high frequency
impedance, and the grounding wire must be as thick and short as possible.
