|The last OMNIScanner left the factory back in July 2005. We regret to say service and support ended July 2009. It's replaced by the Versiv familly of testers. |
Make sure you have the latest firmware in your Omniscanner, as older versions of the firmware did not contain the Noise Detection facility. You can find the latest firmware by clicking here.
What is Impulse Noise?
Noise is undesirable electrical energy that falls within the typical Network frequency bands of operation. It interferes with the network's ability to transmit data reliability. Noise sources may include AC transmission lines, fluorescent light fixtures, industrial equipment, copy machines, etc. Noise problems also occur when other wire pairs in the same sheath are used for non-LAN applications (i.e. voice). This sort of noise is typically low frequency.
Testing for noise involves turning off all LAN devices and measuring for background electrical activity in the cabling. Often noise problems can be corrected by moving the cable away from the source or by removing the source itself. Different noise sources radiate at different frequencies. By knowing the frequency of the Noise Source, you are better able to pinpoint the cause of the Noise.
Impulse Noise Measurements are used for long term monitoring of the network. They indicate spikes of electrical activity that occur at random on the network.
Impulse Noise Testing with the OMNIScanner