User Manual

Appendix B Terminal Menu Reference
RFI-9256 Radio Modem User Manual Page 61 of 96
B.1.2 (3) Radio Characteristics Menu
*** Radio Characteristics Menu ***
Hopping Pattern = 0
Tx Power Level = 20 dBm
RSSI trigger level = -110
Frame Time = 20 milliseconds
Max Tx bytes per frame = 113
Directional Bias is Disabled
(H) Hopping Pattern
(P) Tx Power Menu
(R) RSSI trigger level
(F) Frame Time Menu
(B) Directional Bias Menu
(Esc) Previous Menu
Enter Choice:
Figure 29: Radio characteristics menu
 Hopping Pattern: There are 32 (0-31) hopping patterns available. The hopping pattern determines
how the radio hops through the frequency spectrum. Co-located master units should all use
different hopping patterns to minimise interference, and all units on the same network must have
the same hopping pattern.
 It is advised that the default hopping pattern not be used in order to minimise the change of
interference with other RFI-9256 in the area.
 Tx Power Menu: The transmit power menu allows the user to select the output power of the RFI-
9256. The options are:
(a) OFF
(b) 0 dBm
(c) +10 dBm
(d) +20 dBm
(e) +25 dBm
(f) +30 dBm
The total output power from the antenna must not exceed 1W EIRP (30dBm) noting that antennas
will usually provide gain, and cables and connectors produce a loss.
 RSSI trigger level: The RFI-9256 will only attempt to acquire data if the power on the channel
exceeds the RSSI trigger level. This can be configured between -120dBm and -50dBm, however