Ethernet | Qualifier
The Ethernet protocol is the basis for the pass/fail statement of the qualification devices. By means of tests that are based around the Ethernet transmission system, such as the determination of the signal-to-noise ratio and the delay time between the wire pairs of a transmission path, followed by a Bit Error Rate Test (BERT), qualifiers make their decision about suitable for Ethernet traffic, such as fast or not at all. In addition, there is the power-on test as you already know it from the high-quality wiring testers, such as acoustic cable viewfinders and simple link pulse generators to allow the link LEDs on the switches to flash. They then connect to the network, either via DHCP or fixed addressing. As soon as they are part of the active network, scan, ping and traceroute functions are available for commissioning and troubleshooting. Also important is the possibility to perform PoE load tests according to IEEE 802.3 af/at/bt to ensure the remote power supply of terminal devices.
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