HDC-5016 IP to QAM Modulator User Manual
Date 29. Dezember 2017
BLANKOM-HDC-5016_IP2QAM-modulator-V1.1-RR-12-2017.docx
4
Connecting signal cables
Connecting communication port for WEB-IF
3.2.1 Environmental Conditions
3.2.2 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 25mm
2
.
3.2.3 Frame Grounding
All the machine frames should be connected with protective copper strip. The grounding wire
Item
Requirement
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/m
2
)
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
220V ±10% 50/60Hz or 110V ±10% 50/60Hz. Please carefully check
before running.
