HN-591
Receive Only and Bi-Directional Transmissions
The Receive Only function displays the percentage success rate for receiving
transmissions from the base. This is an indication of how well the remote HopNet
radio “hears” the base. The Bi-Directional function provides a round-trip success rate.
That is, the base must successfully receive data from the remote and the remote must
successfully receive data from the base. In theory, this percentage should be the
square of the Receive Only percentage. If it is substantially less, it is an indication
that the base HopNet radio is having difficulty “hearing” the remote. Good RF links
will have the Receive Only percentage above 95% and the Bi-Directional percentage
above 90%. These functions operate with the Automatic Retransmit Request (ARQ)
disabled and as such provide an indication of link quality but do not provide an
indication of how often data will get through since in normal operation ARQ is
enabled and the radio automatically and transparently will resend data that was not
received on the first attempt.
NOTE: The Options menu allows for bar graph display (in addition to the pie chart
display) of the Receive Good Packets and Bi-Directional Good Packets data.
Received Signal Strength Indication
.
This function will display on a channel basis, the strength of the signal received from
the base by the remote. The values on the Y-axis are only approximate and should not
be used as absolute reading values.
©
2000- 2004 Cirronet
™
Inc
16
M-910-0012
Rev
A
