HN-1010/1510
Enable Global Network Mode
For networks with multiple base stations, remotes are ordinarily only able to link to
one base station, set by the hopping pattern. Mode 1 enables the global mode that
allows remotes to link to any base station they can hear, acquiring whatever hop
pattern is required. In this mode a remote can only change base stations once it is no
longer registered with a base station. Mode 2 enables seamless roaming where a
remote will seamlessly register with a new base station based on received signal
strength before it has lost registration with the old base station. To implement
seamless roaming without the potential for data loss, synchronization between base
stations is required. This feature is available in the SNAP2410 family of products
only. Bases and remotes must be set to the same mode.
Set Hopping Pattern
The HopNet has 64 preprogrammed hopping patterns (also referred to as network
numbers). By using different hopping patterns, nearby or co-located networks can
avoid interfering with each other’s transmissions. Even if both networks tried to use
the same frequency, on the next hop they would be on different frequencies.
Set Transmit Power
The HopNet has two preset transmit power levels, 10mW (10dBm) and 100mW
(20dBm). Control of the transmit power is provided through this command. Default
is 100mW.
Read Receive Signal Strength Indicator (RSSI)
This command reports the relative signal strength averaged over the last 10 hops.
This command returns a one byte value that is proportional to received signal strength
and can range from
00H
to
FFH
. Typical values range from
30H
to
80H
where the
lower the number the lower the received signal strength and the higher the number the
higher the received signal strength. This is a relative indication and does not directly
correspond to a field strength number. This is available only at the remotes as the
base station is the only source that transmits on a regular basis. Plus, in a point-to-
multipoint network the base will receive different signal strengths from each remote.
Set Point-to-Point Direct Mode
Sets point-to-point mode that is recommended for point-to-point applications,
especially where the remote radio is mobile and may leave and re-enter the range of
the base. This mode fixes the remote handle assignment to always be 30H and
improves the re-registration process. Must be set in both base and remote radios.
©
2000- 2004 Cirronet
™
Inc
41
M-2410-0010 Rev A
