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Standard 15 . 4W
PoE PSE
Standard 15 . 4W
PoE PSE
PoE Device (≤10.9W)
100m
POR-1100
POR-1100
100m
100m
100m
100m
Power
Power
PoE Device (≤6.5W)
Despite of the power required by the PoE Repeater and the power loss from the cable, the further the distance from the PSE, then the greater the power
drops of.
The diagram shows a standard PoE Power Sourcing Equipment which supplies 15.4W of power. It can be seen that when repeated twice, there is more
drop of in the end power available for the PoE device.
This table shows the estimated power available at diferent distances when the PSE is a Standard 15.4W source.
Connect with Standard 15.4W PSE
End to End Distance
100m
200m
300m
400m
500m
Daisy-Chaining
0
1
2
3
N/A
( 1-Port PoE Repeater)
Power Available
12.9W
10.9W
6.5W
3.84W
Data only
No power
To overcome the power loss, we can extend the distance possibly by increasing the power input at the PSE.
LevelOne has a range of High Power PSE for this application, such as FSW-0513 PoE switch (48W), POI-4000 PoE
injector (40W), or POI-3000 Gigabit PoE Plus Injector (30W).
Due to the length and quality of cable, it is difcult to be certain that there is enough power available to power the
PoE device. So for the convenience of installers, LevelOne has a compact and portable PoE Power Measurement
device to examine and test the power status in real time. In essence, it guarantees that sufcient power will be
successfully delivered to the PoE device.
PPM-1000
PoE Power Measurer
- Ensure your PoE device works
correctly
- Measure available power (watts)
and voltage in a PoE line
- Portable and compact size
- LED display and indicators to
reveal the power status
- Built-in temperature sensor
- Replaceable external battery
pack for real portability
- Detachable neck strap
- Build-in temperature sensor and
LED indicator to inform user
overheat condition if high power
load test is applied
Connect with High-Power 30W PSE, POI-3000 / 40W PSE, POI-4000 (refer to page 8)
End to End Distance Daisy-Chaining
Power Available
( 1-Port PoE Repeater)
30W PSE (POI-3000)
40W PSE (POI-4000)
100m
0
-
-
200m
1
25.5W
28W
300m
2
21W
25.5W
400m
3
16.5W
21W
500m
4
12W
16.5W
600m
5
7.5W
12W
700m
6
3.84W
7.5W
800m
7
Data only No Power
3.84W
900m
8
-
Data only No Power
POR-0100