LINK-TRACK 1395025 - Caterpillar

"GPS Information" Status
Illustration 13 g01363341
"GPS Information" Screen
The Product Link PL121SR "GPS Information" screen shown in Illustration 13 shows the current status of the Product Link GPS. Refer to Table 5 for an explanation of the GPS-related parameters.
Table 5
GPS Information Parameters
Status Description
PC Current Date/Time The current Date and Time of the host PC is displayed.
GPS Position Status Valid: The Product Link Module has previously calculated a valid fix.
Invalid: The Product Link Module has not calculated a previous fix.
GPS Time Stamp The time stamp from the last fix is displayed. The time can be compared to the Current Date/Time to verify that the time since the last position was calculated.
GPS Latitude The last valid GPS Latitude is displayed.
GPS Longitude The last valid GPS Longitude is displayed.
Number of GPS Satellites The number of GPS satellites currently in use by the GPS receiver.(1)
(1) Three or more satellites are needed to get an updated position fix."Satellite Information" Status
Illustration 14 g01450732
Satellite Information Screen
Note: Disregard the value of the "Average Wireless Communication Error Count" when satellite communication status value equals "Not Established". To have a "Average Wireless Communication Error Count" is normal, if communication with the satellite is not established.The "Satellite Information" screen for the Product Link PL121SR that is shown in Illustration 14 shows the current satellite communications status. Refer to Table 6 for an explanation of satellite communications status parameters.
Table 6
Satellite Communications Status Information
Communications Status Information System Description Notes
Satellite Communication Status PL121SR and PL321SR Established: The PLM has an active connection to a satellite.
Not Established: The PLM does not have an active connection to a satellite. This is not an error mode. Satellites move quickly. Often times a satellite has moved out of view of the antenna and another has not yet moved into view of the antenna.
Satellite Network Control Center Communication Status PL121SR and PL321SR Established: The satellite that the PLM is communicating with has a connection to a Network Control Center (ground station).
Not Established: The satellite that the PLM is communicating with does not have a connection to a Network Control Center (ground station). This is not an error mode. Satellites move quickly. Often times a satellite has moved out of view of the antenna and another has not yet moved into view of the antenna.
Average Wireless Communication Error Count PL121SR and PL321SR This value is an indication of the quality of the connection with the satellite used for troubleshooting satellite connections. The lower the number, with a minimum of 0, the better the signal strength. As the value increases, the amount of transmit time for signals increases.
Communications Satellite Identification Number PL121SR and PL321SR This value identifies the particular communications satellite that the PLM is tracking. If no satellite is in range, the indication will be "Conditions not met".
Communications Modem Signal to Noise Ratio PL121SR and PL321SR This value indicates quality of the communications signal expressed as a number. The higher the number, the better the signal. A value below 10 will typically cause no transmissions. The higher the value above 10, the better