DSM2500C IP to Analog Modulator User Manual
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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.
Users should make sure the 2 ends of grounding wire well electric conducted and be
antirust.
It is prohibited to use any other device as part of grounding electric circuit
The area of the conduction between grounding wire and device’s frame should be no less
than 25mm2.
2.2.4 Frame Grounding
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.
Electric Isolation, Dust Free
Volume resistivity of ground anti-static material: 1X107~1X1010,
Grounding current limiting resistance: 1M (Floor bearing should be
greater than 450Kg/㎡)
5~40℃(sustainable ), 0~45℃(short time)
installing air-conditioning is recommended
20%~80% sustainable 10%~90% short time
Installing rubber strip for sealing door-gaps and dual level glasses for
window
It can be covered with wallpaper, or brightness less paint.
Fire alarm system and extinguisher
Requiring device power, air-conditioning power and lighting power are
independent to each other. Device power requires AC power 220V ±10%
50/60Hz or 110V ±10% 50/60Hz. Please carefully check before running.
