HN-591
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. Bases and remotes must be set to the same
mode.
Set Hopping Pattern
The HopNet has 32 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 three preset transmit power levels, 10mW (10dBm), 100mW
(20dBm) and 500mW (27dBm). 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.
©
2000- 2004 Cirronet
™
Inc
22
M-910-0012
Rev
A
