Chapter 2 Technical Indices
2-5
Table 2.4-1 Temperature and Humidity Requirements
Item
Requirements
Environment temperature
0°C~+45°C
Transportation and storage temperature
-20°C~ +60°C
Relative humidity
10%~90% (35°C)
2.4.3 Cleanness Requirements
The cleanness requirements involve dust and corrosive gas in the air. The equipment
should work in an equipment room that meets the following cleanness requirements:
1. There should be no explosive, conductive, magnetic-conductive or corrosive
dust in the transmission equipment room.
2. The density of the dusts with a diameter greater than 5µm should be less or
equal to 3×10
4
particle/m
3
.
3. There should be no such gas as SO
2
or NH
3
that will corrode metal or damage
the insulator.
4. The equipment should be kept clean. Besides, the door and the windows should
be sealed.
2.4.4 Dustproof and Anti-corrosion Requirements
According to the application range of GB4798 and the ZXMP M600, the dustproof and
anti-corrosion requirements are as follows:
1. Storage environment: 1K5/1Z1/1B2/1C2/1S3/1M3; with the continuous storage
time being 180 days
2. Transportation
environment:
2K4P/2B2/2C2/2S3/2M3;
the
continuous
transportation time being 30 days
3. Operation environment: 3K5/3Z2/3Z7/3B2/3C2/3S2/3M3; the continuous
operation time being 20 years.
2.5 Working Wavelengths
The working wavelengths of the ZXMP M600 equipment are in strict compliance with
ITU-T Recommendation G.694.2. Specific central wavelengths and central frequencies
used in a multi-channel system are adopted.
