Albedo xGenius - Measuring Optical Power; Measuring Poe; Poe+ Electrical Parameters

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User Guide
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3.2.Measuring Optical Power
The test unit reports the transmitted and received optical power if it is equipped with
SFP / SFP+ supporting this measurement (See section 2.2.2). The following
description assumes that the Connector setting is configured to Optical in the test ports
(See section 2.2.1). The test procedure is as follows:
1. From the Home panel, go to CONFIG,
The port configuration panel is displayed.
2. Select Mode to enter in the mode selection menu
3. Choose Ethernet endpoint, IP endpoint or IP through.
4. From the Home panel, go to RESULTS,
The port setup panel is displayed.
5. Select either Port A or Port B to enter in the port specific results menu.
6. Go to SFP information.
7. Check the results of TX optical power and RX optical power.
3.3.Measuring PoE / PoE+ Electrical Parameters
Power over Ethernet (PoE) is a technology that enables remote powering of devices
such as VoIP telephones or cameras through the electrical Ethernet interface,
commonly based in CAT 5 or CAT 6 UTP cable, so that these devices do not need any
other external power source.
PoE was defined in standard IEEE 8023af in 2003 and was improved in 2009 in the
standard IEEE 802.3at, known as PoE+. The first version of the standard was designed
to provide powers up to 15.4 W but IEEE 802.3at supports up to 25 W. Some current
commercial PoE+ devices can deliver much higher powers, however.
The PoE / PoE+ standard defines two devices, the Power Source Equipment (PSE)
and the Powered Device (PD). The PSE generates the power required to feed the PD
and it can be an Endspan or a Midspan. Endspans are usually Ethernet switches or
routers with PoE / PoE+ functionality. On the other hand, Midspans are devices
Wiring A cable could be designed to cross at the remote end the pairs
used for transmitting and receiving (crossover cable) or not
(straight cable). The wiring result checks whether a cable is
straight or crossover.
This test result depends on the local and remote MDI / MDIX
status and it can only be determined if the cable is connected
through test port A and B.
Table 3.4: Cable test results
Result Description