Author: RRi
Page - 9 -
Version 1.0
Date: 10-2019
BLANKOM-IPQAM-801_User_Manual_ENv1.0.docx
IPQAM-801 DVB-C A/C Modulator IP to QAM User Manual
2.4 Environmental Requirements
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: 1X107...1X1010
，
Grounding current
limiting resistance: 1M
(Floor bearing should be greater than 450Kg/
㎡
)
Environment
Temperature
5...40°C (sustainable )
，
0...45°C (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 110V±10%, 50/60Hz or AC 220V±10%, 50/60Hz.
Please carefully check before running.
2.5 Grounding Requirement
For safe function all modules’ or the Chassis should be grounded: That is the basis of
reliability and stability of devices. Also, they are the most important guarantee of lightning
arresting and interference rejection.
Grounding connection must be installed with a 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 are well electric conducted and not
corrosive.
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 19'' rack should
be not less than 16 better 25 mm
2
.
