Shanghai New Rock Technologies, Inc.
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The temperature in the equipment room should be kept between 0 and 40 . Abnormal
℃
℃
temperature condition may cause problems to the gateway:
z
High temperature acceralets aging of electrical parts and insulation materials.
z
Low temperature, however, may destablize the operation of gateway.
1.2.2
Cleanliness
Dust is very harmful to the safe operation of the gateway. Dust that is adsorbed by static electricity
acts as insulator, which not only affects the service life of the gateway but also leads to
communication failure. Therefore, the room for the gateway must be kept clean.
To ensure adequate ventilation to keep the gateway from overheating, there should be adequate
clearance for the air intake and the air exhaust vents. Keep at least 6 cm clearance at the left and
right side of the chassis where the air intake is and at least 15 cm clearance at the rear of the chassis
where the exhaust vents located.
The rack for MX51, MX100-AG and MX120 should have a good ventilation system.
1.2.3
Power Supplier
Check the power supply system against the electrical specification of the gateway.
The electrical specification is listed in Table 1-2.
Table 1-2 Power Requirements of MX Gateway Series
Model
Rated Voltage
Input Voltage
Range
Power
Frequency
Range
Max Power
Consumption
MX8
DC 5V
5V
～
9V
DC 15W
MX51
110V or 220V
100V
～
240V 47Hz
～
63Hz
50W
MX100-AG
110V or 220V
100V
～
240V 47Hz
～
63Hz
75W
MX120 (Main
Chassis)
110V or 220V
100V
～
240V 47Hz
～
63Hz
75W
MX120 (Expansion
Chassis)
110V or 220V
100V
～
240V 47Hz
～
63Hz
50W
:
MX8 is equipped with an AC to DC adapter
。
1.2.4
Grounding
There is no ground tab on MX8 and it gets power from an AC to DC adapter. To maintain good voice
quality, proper grounding of the AC supply is critical to minimize the noise from the AC interference.
Therefore, the following conditions must be ensured:
z
The AC power outlet has a protection ground contact.
z
The ground contact of AC supplier must be grounded properly.
z
Avoid sharing the multi-outlet power strip with other devices that may generate elctrical
interference.
MX51, MX100-AG and MX120 are chassis based with ground tab.
In a site that can not provide ground for the chassis, you must make sure that the AC supply satisfies
the requirement described above for MX8.
In a site that can provide ground for the chassis, the ground tab at the rear panel of chassis for MX51,
MX100-AG and MX120 must be properly grounded.
1.2.5
Electromagnetic Environment
Any possible interference source, wherever it is from, impacts the gateway negatively. To resist the
interference, make sure that:
z
Keeping the gateway far from radio transimitting station, radar station, and high-freqency devices.
Use electromagnetic shielding when necessary.
z
The gateway is capable for secondary lighten protection on wires and cables that connected to
outside buildings.The site must provide the primary lighten protection.