Dell PowerConnect W-IAP3WN Dell Instant 6.2.0.0-3.2.0.0 User Guide - Page 102

Non Wi-Fi Interferer Fixed Frequency (Cordless Phones) Fixed Frequency (Video) Fixed Frequency (Other) Frequency Hopper (Cordless Base) Frequency Hopper (Cordless Network) Frequency Hopper (Xbox) Frequency Hopper (Other) Microwave Microwave (Inverter) Generic Interferer Description Some cordless phones use a fixed frequency to transmit data (much like the fixed frequency video devices). These devices are classified as Fixed Frequency (Cordless Phones). Video transmitters that continuously transmit video on a single frequency are classified as Fixed Frequency (Video). These devices typically have close to a 100% duty cycle. These types of devices may be used for video surveillance, TV or other video distribution, and similar applications. All other fixed frequency devices that do not fall into one of the above categories are classified as Fixed Frequency (Other). Note that the RF signatures of the fixed frequency audio, video and cordless phone devices are very similar and that some of these devices may be occasionally classified as Fixed Frequency (Other). Frequency hopping cordless phone base units transmit periodic beacon-like frames at all times. When the handsets are not transmitting (i.e., no active phone calls), the cordless base is classified as Frequency Hopper (Cordless Base). When there is an active phone call and one or more handsets are part of the phone conversation, the device is classified as Frequency Hopper (Cordless Network). Cordless phones may operate in 2.4 GHz or 5 GHz bands. Some phones use both 2.4 GHz and 5 GHz bands (for example, 5 GHz for Base-tohandset and 2.4 GHz for Handset-to-base). These phones may be classified as unique Frequency Hopper devices on both bands. The Microsoft Xbox device uses a frequency hopping protocol in the 2.4 GHz band. These devices are classified as Frequency Hopper (Xbox). When the classifier detects a frequency hopper that does not fall into one of the above categories, it is classified as Frequency Hopper (Other). Some examples include IEEE 802.11 FHSS devices, game consoles and cordless/hands-free devices that do not use one of the known cordless phone protocols. Common residential microwave ovens with a single magnetron are classified as a Microwave. These types of microwave ovens may be used in cafeterias, break rooms, dormitories and similar environments. Some industrial, healthcare or manufacturing environments may also have other equipment that behave like a microwave and may also be classified as a Microwave device. Some newer-model microwave ovens have the inverter technology to control the power output and these microwave ovens may have a duty cycle close to 100%. These microwave ovens are classified as Microwave (Inverter). Dualmagnetron industrial microwave ovens with higher duty cycle may also be classified as Microwave (Inverter). As in the Microwave category described above, there may be other equipment that behave like inverter microwaves in some industrial, healthcare or manufacturing environments. Those devices may also be classified as Microwave (Inverter). Any non-frequency hopping device that does not fall into one of the other categories described in this table is classified as a Generic Interferer. For 102 | Spectrum Monitor Dell PowerConnect W-Series Instant Access Point 6.2.0.0-3.2.0.0 | User Guide