استاندارد IEEE802.3af و IEEE802.3at در دوربین مداربسته چیست؟

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IEEE802.3af و IEEE802.3at در دوربین مداربسته در واقع دو استاندارد موجود برای تکنولوژی POE هستند. به کمک این دو استاندارد، که مختص به دوربین هایک ویژن تحت شبکه است، می توان از یک کابل، برای تامین برق و انتقال اطلاعات استفاده کرد.

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IEEE802.3at:

IEEE802.3at استاندارد پیشرفته تری است که اغلب با POE+ شناخته می شود. توان ارسالی در این استاندارد 30 وات است که تنها 25.5 وات از آن، مورد استفاده دوربین قرار می گیرد. شدت جریان در این استاندارد 600 میلی آمپر است. در جدول زیر می توان تفاوت های این دو استاندارد را با هم مقایسه کرد.

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IEEE802.3af:

IEEE802.3af اولین استاندارد POE است. توان تولید شده در این استاندارد، 15.4 وات است که تنها 12.95 وات آن به دوربین می رسد و مابقی انرژی آن اتلاف می شود. شدت جریان در این استاندارد حدود 350 میلی آمپر است.

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به طور کلی تمام دوربین های ساده و معمولی با مشخصه AP-105، دارای این استاندارد ها هستند اما در صورتی که از دوربین های پر مصرف مانند: دوربین اسپیددام هایک ویژن و یا PTZ استفاده می کنید می بایست از سوییچی سازگار با استاندارد IEEE 802.3at استفاده نمایید.

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