User guide

DATA-LINC GROUP
30
PN 161-09889-001B
rev 3/2005 ver 6.33c
PLR580D / DA User Guide
Overall Rcv Rate (%)
The Overall Rcv Rate measures the percentage of data packets that were successfully transmitted from the Master to
the Remote on the first attempt without requiring retransmission. A number of 75 or higher indicates a robust link that
will provide very good performance even at high data transmission rates. A number of 25 or lower indicates a weak or
marginal link that will provide lower data throughput.
Number of Disconnects
If, during the course of performing a link test, the link between the master and the remote is broken, and the radios lose
carrier detect, the occurrence is recorded in the Number of Disconnects value. The value indicates the total number of
disconnects that have occurred from the time the link test started until the radio was put into config mode. Under normal
operating conditions, the number of disconnects should be 0. One or more disconnects may indicate a very weak link,
the presence of severe interference problems or loss of DC power to the Master or Repeater if one is present.
Note: a remote and/or repeater will record a disconnect if the system master is placed into configuration mode
or has power interrupted while the remote and/or repeater is linked to the master
Radio Temperature
The radio temperature value is the current operating temperature of the radio in degrees C (Celsius.) For proper
operation, PLR580 radio modems must be in the range of 0
0
to 60
0
C.
Multipoint Operation
In a multipoint system, a radio modem designated as a master is able to simultaneously be in communication with
numerous remotes. In its simplest form, a multipoint network functions with the master broadcasting its messages to
all
remotes and the remotes responding to the master as appropriate