Memorable 2008

This year the snow ,GHD Red Butterfly 2011, especially the big , father and mom, tin no work home . A team of bad people, apt scare the people , burned my school , smashing my flowers. The Lama, Jiliguala ,GHD Blue Butterfly 2011, long neb foreigners ,GHD Green Straighteners, masquerading blindness . Eiffel Tower , London police, hold the torch 's sister , cute boast. Whistle toot, tracks rushing , the exercise to heaven , not yet arrived. Long and corner over , the world collapsed , the classroom below the rubble, buried a fairy anecdote. Heavy wall, and the instructors pressure, we were in his body, are quite amenable . Have not penetrated as a long period , listened the spokesmen, outside there is a grandfather, and told me to not be terrified. Uncle 's hand ,GHD Purple Straighteners, hard to excavate , the PLA's helicopter , bringing me family. After a misadventure , I have grown up ,GHD Pink Limited Edition, will not forget , 2 thousand and eight ...
Premier Wen said: a small problem multiplied by 1.3 billion, ambition convert a important problem ; a magnificent Total , divided at 1.3 billion, will chance a small sum. Now we say: that a small kindness , multiplied by 1.3 billion, will become a adore of the sea ; a lot of difficulties , divided by 1.3 billion,GHD IV Straighteners, will become insignificant.

[g6jyu6ef]

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142911 2010 年 12 月 02 日 19:57 Reading (loading. ..) Comments (0) Category: Technical Documentation
surveillance video lines and control lines are mainly based on the selection of monitoring points to determine the distance to the host, because of the quality of all the different manufacturers of wire, the following conclusions apply only to the wire in my company, and there is no interference in the environment circumstances apply, use other company's cable customers, do not press the company's standard construction.
1, the video camera to monitor the host line
distance ≤ 100 m, with 75-3/64P video cable. distance of the camera to the monitoring host
≤ 200 meters,new balance 574, with 75-3/96P video cable.
camera to monitor the host distance ≤ 300 m, with 75-5/96P video cable.
camera to monitor the host distance ≤ 500 m, with 75-5/128P video cable.
camera to monitor the host distance ≤ 800 m, with 75-5-1/128P video cable.
2,枸杞摄生 - Qzone日记, PTZ control line
head and controller from ≤ 100 meters, with RVV6 × 0.5 sheathed cable.
head and controller from> 100 m, with RVV6 × 0.75 sheathed cable.
3, camera control lines
by RVV4 × 0.5 jacket line.
4, communication lines
decoder to control the host camera distance ≤ 200 m, should be shielded wire
RVVP2 × 0.5 camera to the monitoring host distance ≤ 500 m, should be used RVVP2 × 0.75 shield
5, camera power cord
power cord to the camera before they can be reasonably calculated the matching, the specific calculation method, which is not introduced there, I often do the following to select multiple thick wire works listed,new balance running shoes, we want to project help:
first introduced the camera under the common 12V power supply operating current:
ordinary bolt or Hemisphere: about 200 ~ 300mA operating current can select 500MA-1A power supply
Camera: about 350 ~ 400mA operating current can choose to 1A power
infrared camera: small medium work for the current option 1A :600-700MA power
large infrared camera operating current 1000MA-1200MA 2A power supply can choose
a monitoring system, the camera can be individually powered,new balance sneakers, can be more centralized power supply,new new balance shoes, power supply if it is more than the camera focus, the current number of cameras required current. Suppose a monitoring system to a unified common Dome Camera 10 a power supply, because the current one hemisphere is 300-400MA, so the current is 10 cameras 3000MA-4000MA, you should select the 5A or 6A of the power supply.

power cable diameter monitoring system choice: Suppose four cameras to monitor the distance of less than 40 meters: each camera individually cloth RVV2 × 0. 5 power cable to the monitoring host and use a small switching power supply,小腿酸胀，运动后加剧。坐下没症状, if the 4 hemisphere or bolt, you can choose 2 or a 12V2A 12V1A power supply,new balance shoes, four cameras to take power by way of parallel, more to save wire, if the larger number of cameras, 8 cameras, high-power 12V should be used centralized power supply DC power supply, this time the current is too large, we must consider the voltage drop across the power line,动物园~ - Qzone日记, under normal circumstances, 8 camera system, the distance does not exceed 40 meters, can the wire cloth RVV2 * 0.75 centralized power supply, if the concentration of power 16-way system, we must choose RVV2 * 1.0 of the power cord. Described above is the camera to monitor the host no more than 40 meters away from the choice of the power cord, if the distance from the camera to the host more than 40 meters, we must consider the use of centralized power supply 220V to the transformer into the camera side to the camera 12V supply, under normal circumstances, 220V power supply, as long as the system is not too large, 8 below, within 200 meters distance, you can select the wire RVV2 * 0.5, if 8 or more, are powerful infrared cameras to To consider the use of the power cord RVV2 * 0.75 power, the other if the distance is farther, in order to ensure safety, it is best to use RVV2 * 1.0 of the wire. selection and calculation of the power cord is complex and involves more aspects of the parameters, so that there would not be specific algorithm,new balance mens, the above conclusions are the practical applications of the lessons learned, is only for reference , the company responsible for any related liability. Select the camera monitoring system
label power line work