6Harmonics GWS-3000, Руководство по эксплуатации, Страница: 22 / 31

@2013 6Harmonics Inc. All Right Reserved 22
7.13 setchanlist command
The “setchanlist” is to set channel list. The following is to set channel list 14
15 35:
GWS Cmd > setchanlist 14 15 35
GWS Cmd >
Note1: For markets such as the USA, where the regulatory rules require the
node to access a database, the radio will only accept a channel list from an
approved database with whom it has registered.
Note 2: This command is intended for countries where a database is not
prescribed and allows the user to program the allocated channels into
memory. In this way, the node can only be tuned to a channel which is part
of the channel list, which will accelerate handoff and the scanning process
and will ensure that node does not attempt to transmit on a channel which is
not permitted. The software will only attempt to establish communication links
on a channel which is part of the “channel list” and the user will only be
permitted to change the channel, to a channel which is part of the “channel
list.”
7.14 getchanlist command
The “getchanlist” will return the current channel list stored in memory:
GWS Cmd > getchanlist
GWS Cmd >
14
15
35
If the radio has received the channel list from a white space database, then
this command can be used by the operator to determine which channels are
available. The command does not querry the database but produces the
channel list which was last provided by the database to be displayed.
7.15 getrxgain command
getrxgain to return the current rx gain in dbm:
GWS Cmd >getrxgain
Note: The rxgain which is reported is the gain of the White Space radio front
end, and does not include the baseband gain. The system provides
reasonably good performance with an rxgain of 12 dB. For short links where
RX sensitivity is not critical, the gain can be reduced accordingly. The
receive chain includes two attenuators, “rxatten0” and “rxatten1”.
“rxatten0” is situated after the LNA but before the downconverter and for
maximum sensitivity should be left at a value of 0. “rxatten1” is located at IF