Afar AR-24010E, Руководство оператора

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pulsAR radio Operator's Manual
Network. The radios discard the packets that are known to be local, but forward all other
packets to remote radios. These are accounted separately in the report.
The “times” format indicates whether that entry is for a “multicast” (MC) address, shows the
time when the station was added to the table, and how long since that address has been seen.
When the “idle” time exceeds the time specified by the “ethernet” command, that entry is
deleted from the table.
econsole table
The unit broadcasts an e-console discovery packet on both its ports: Ethernet and RF, and then
reports all the replies. These include both gateways and radios that can be reached on either
port.
properties
Displays the properties of the radio hardware including the hardware version, clocks speeds,
CPU version, and RF characteristics.
sync-delays
Valid only at a radio that becomes the source of the heartbeat at a site with co-located radios
(see section 2.4). Use the command >
show status to identifies the radio that is currently the
source of the heartbeat. This table displays the measured transit times, over the local Ethernet,
to each of the co-located radios.
spectrum-analysis
antenna=a or b
display=graph or table
dwell-time-ms=1..1000
This command switches the radio to receive mode on the designated antenna (defaults to a ) and
performs a scan of all the channels in the band, dwelling on each channel for the specified
amount of time (defaults to 100 milliseconds). While on each channel it measures the RSSI for
that channel and stores its peak value. It then displays the data collected in a graphical or table
formats (defaults to
graph ).
Note that the RSSI value reported for each channel represents the total energy present in the
radio bandwidth centered around that channel (see appendix B for the RF bandwidth of each
model). Since adjacent channels “overlap” each other, a narrow band transmitter will show up
in this spectrum analysis as a lobe with energy present in several adjacent channels.
Conversely, you do not need to find a wide region in the spectrum analysis report to select a
quiet channel, i.e., any single channel sample that shows a low “noise” level, is a good
candidate to select as a receive channel.
Performing this function causes all RF links with this radio to drop momentarily. Once the
scan is complete the links will be restored. If you invoke this command remotely through an
RF link the radio waits at the end of the spectrum scan until the RF link is restored and then
sends the report to your terminal.
Wen you issue this command at a child radio specifying the antenna that receives from the
parent, you should see the transmission from the parent. However, if you do this at a parent
you will not see the transmissions from its children. This is because children only transmit over
RF if they are polled by a parent and when the parent is performing the spectrum analysis it
stops all RF polls of its children.
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