Changes between Version 11 and Version 12 of DSC/QandA


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Timestamp:
Feb 20, 2013, 1:39:43 AM (12 years ago)
Author:
seskar
Comment:

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  • DSC/QandA

    v11 v12  
    4141    A: Nodes are synchronized with the NTP server at boot time. However, once the testing starts the nodes can only talk to the packet server service over the Ethernet and thus NTP synchronization can't be maintained.
    4242 1. Q:'''How is noise being added to the environment?''' '''What is meant by: "received SNR might range from 0dB SNR to 10dB"?''' [[BR]]
    43     A: Real noise is being injected into the environment (i.e. affecting both ends of the link). The SNR range is being calculated relative to the maximum transmit power (measured by the receiver) of the SBX front-end (maximum transmit power for SBX is 100 mW).
     43    A: Real noise is being injected into the environment (i.e. affecting both ends of the link). The injected noise level will be adjusted so that SNR measured by the receiver varies from 0 dB to 10 dB when transmitter is transmitting at the maximum power (100 mW for SBX front-end) and will not be adaptive.
    4444 1. Q: '''How is 2.5 MHz bandwidth measured?''' [[BR]]
    4545    A: It is a 3 dB bandwidth (of 2.5 MHz max).