User`s manual

CR-SEB
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 CR-SEB
Informs CR-SEB 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 CR-SEB with the radio serial
number entered
Displays slaves currently registered with the CR-SEB
sync [help
disable
enable
master
override
settings
slave
wire]
(Master only)
Displays help screen for command
Turns sync off (default)
Turns sync on
Sets CR-SEB as sync master
Toggles master backup override
Displays synchronization settings
Sets CR-SEB 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 CR-SEB. Master only.
The
fcc command enables the FCC rules regarding synchronization of frequencies when
CR-SEB masters are co-located and synced using the sync signals. The sync signals
synchronize the CR-SEB 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 CR-SEBs 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 CR-SEB masters are deployed in
such a country, the
fcc disable command can be issued to allow synchronization in
frequency. The co-locate CR-SEB masters must have their sync ports connected for this to
have any affect. The default is
fcc enabled.
The parameter entered for
length is the decimal value of the number of 625 µsec ticks in
the desired dwell time. A value of 10 (decimal) corresponds to a hop dwell time of 6.8
 2000- 2004 Cirronet Inc 22 M-2410-0025 Rev A