User`s guide

SEM2410
Radio Commands
Command Description
hop [help
fcc [enable|disable]
length <hoplen>
sequence [75|25]
set <pattern>
(Master only)
Displays help screen for command
Enable/disable FCC hop synchronization
Sets/displays hop dwell time in radio and SEM
Informs SEM of number of frequencies in radio hop
pattern
Sets/displays the hop pattern to be used. This is
required in countries with limited spectrum.
slave [ help
disconnect <id-id-id>
list]
(Master only)
Displays help screen for command
Disconnects slave SEM with the radio serial number
entered
Displays slaves currently registered with the SEM
sync [help
disable
enable
master
override
settings
slave
wire]
(Master only)
Displays help screen for command
Turns sync off (default)
Turns sync on
Sets SEM as sync master
Toggles master backup override
Displays synchronization settings
Sets SEM as sync slave
Sets synchronization mode to use RJ-11 wire ports
hop Used to set the hop dwell time or the number of frequencies in the hop pattern of the
radio in the SEM. Master only.
The
fcc command enables the FCC rules regarding synchronization of frequencies
when SEM masters are co-located and synced using the sync signals. The sync
signals synchronize the SEM masters such that they will transmit at the same time.
FCC rules in the US allow synchronization in time but not frequency. That is, the
master SEMs cannot by synchronized in such a way that they would never transmit
on the same frequency. While this only happens so infrequently that throughput is
not substantially impacted, FCC rules do not allow this mode of operation. Other
countries’ rules do allow spread spectrum radios to be synchronized in time and
frequency. If the co-located SEM masters are deployed in such a country, the
fcc
disable
command can be issued to allow synchronization in frequency. The co-
locate SEM masters must have their sync ports connected for this to have any affect.
The default is
fcc enabled.
© 2000- 2005 Cirronet™ Inc 26 M-2410-0018 Rev C