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Related Flashcards
Cards In This Set
| Front | Back |
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What Rf Component is responsible for generating the AC signal
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Transmitter
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A point source that radiates signal equally in all directions is known as what ?
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Isotropic radiator
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When calculating the link budget and system operating margin of a point to point outdoor WLAN bridge link, what factors should be taken into account?
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Distance, Recieve sensitivity, Transmit Amplitude, Cable loss, Frequency
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The sum of all components from the transmitter to the antenna, not including the antenna, is known as what?
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IR, and Intentional Radiator
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The highest RF signal strength tha tis transmitted from an antenna is known as what?
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EIRP - Equivalent isotrpically radiated power
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Select the units of power
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Watt, MilliWatt, Dbm,
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Select the units of comparison(relative)
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Dbi, Decibel Dbd, Bell
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2 Dbd is equal to how many dbi
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4.14 dbi(add 2.14 to the dbd value)
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23 dbm is equal to how many mw
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200mw
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A wireless bridge is configured to transmit at 100mw. The antenna cable and connectors produce at 3 db loss and are connected to a 16 dbi antenna. What is the EIRP?
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2000 mw
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A WLAN transmitter that emits a 400 mw signal is connected to a cable with a 9db loss. If the cable is connected to an antena with 19dbi of gain, what is the EIRP?
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4,000 MW OR 4 WATTS
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WLAN vendors use RSSI threshold to trigger which radio card behaviors ?
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Roaming and Dynamic Rate Switching
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Recieved signal strength indicator (RSSI) metrics are used by 802.11 radios to define which RF Characterisitics
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Signal Strength
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Dbi is a measure of what?
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The signal increase caused by the antenna
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Which of the following are valid calculations when using the rule of 10's and 3's
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For very 3db of Gain double the abosolute power
For every 10db of loss divide the abosolute power by a factory of 10. |
