EverFocus PALUN User Manual
Introduction
PoE Switch IP CameraPalun
Palun
1W
1W
RJ45
Coax
RJ45
Power Provider
Power Consumer
Class 1~4
C
0
C1+
Class 0
C0
C1+
Palun is a PoE-powered Video Balun which can transmit both power and digital IP video
signal over coaxial cable. With Palun, you can easily upgrade the surveillance system from
analog to IP, leveraging the existing coaxial infrastructure without re-cabling. Moreover, a
smart switch design enables Palun to better accommodate cameras of different class levels.
Please see all the detail information in this document.
How to Use the Switch on Palun?
The switch on Palun (the blue one only) is designed for adjusting the power output from
the PoE switch in order to better accommodate cameras of different class levels.
If the IP camera’s PoE type is Class 1~4, please switch it to C1+.
(If your IP camera’s class level is 1, Palun will advertise it as Class 2 to the PoE switch; if the
camera is Class 2, Palun will advertise it as Class 3 to the PoE switch, and so forth)
If the IP camera’s PoE type is Class 0, please switch it to C0.
1
Why to Use the Switch on Palun?
PoE Switch
Palun (without switch)
IP Camera
2W
4W / Port
4W
Class 1
Class 1
PoE Switch
Palun (C1+)
IP Camera
2W
7W / Port
4W
Class
1
Class 2
Class 2
Originally, if your camera is Class 1 and consumes 4W, the PoE switch detects the class
level and sends Class 1 guaranteed maximum 4W of power which is sufficient to power up
the camera. However, Palun also consumes 2 watts of power, so the total power
consumption (6W) of both Palun and IP camera exceeds the power (4W) delivered by the
PoE switch.
Now, if you switch Palun to C1+ (for Class 1~4 IP camera only), it will help to increase the
guaranteed power output from the PoE switch by advertising a higher class level.
Therefore, in our example above, even though the IP camera is Class 1, Palun will advertise
it as Class 2 to the PoE switch so that the PoE switch will reserve a Class 2 guaranteed
power (7W) for devices connected to this port. Then, it is now sufficient to power up both
camera and Palun.
Guaranteed Power at EverFocus PoE Switch
IEEE PoE Standard Class Guaranteed Power at PoE Switch
0 15.4W
IEEE802.3af
IEEE802.3at (Type 1)
1 4W
2 7W
3 15.4W
IEEE802.3at (Type 2) 4* 30W
Table 1
* Class 4 can only be used by IEEE802.3at (Type 2) devices.
2
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