
1.3
×10
5
2.4
×10
5
7
×10
5
7
Particle Diameter Range
[0
,
0.5]
[0.6
,
1]
[1.1
,
3.0]
[3.1
,
5.0]
Number of Particles per Cubic Meter
Ensure that the specifications of the NVR1821 are complied with. For example, the operating
temperature for the NVR1821 must be within the range of -10°C to 55°C.
For the physical specifications of the NVR1821, see chapter 3 "Physical Specifications.”
2.2 Rear Panel
The following figure shows the rear panel of the NVR1821.
Installing the NVR1821
1 Preparations
1 .1 System Specifications
1 .2 Equipment Cleanliness
The following table provides the mapping between the particle diameter range and number of
particles per cubic meter
.
You must install the NVR1821 in an environment as free from dust and foreign conductive
material (such as metal flakes from construction activities) as is possible
.
RS-485
Alarm output
Alarm
input
Audio
input
USB ports
Power port
Ground
Ethernet ports
VGA output
eSATA port
Audio
output
HDMI output
A
C 1
0
0
-2
4
0
V
~
6
0
-5
0
H
z 2
.0
A
eSATA
2
1
.
4
×10
Содержание NVR1821
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