User Manual

PRELIMINARY COPY Page 16 of 19 P/N 02-81011 v 2.2
All of the current day’s impacts are displayed in the Cumulative Impact window, with a
bar chart below displaying the magnitude of each. These data are associated with the
Current Impact player number. To examine a specific impact that an individual player
has experienced, click on the player’s circle in the Player List to enter History Mode. All
of that player’s impacts for the day will be shown in the Cumulative Impacts window. In
addition, a list of the impacts labeled with the time (HH:MM:SS:mSec) at which the
impact occurred will be displayed in the Past Impacts List window. Double click on a
specific impact in the Past Impacts List window to examine the details of that impact.
To return to Real-Time Mode, click on the “Return to Real-Time” button.
The Alarm Pager alerts the sideline staff if an impact or temperature event exceeds a
pre-defined threshold. Impact and temperature thresholds can be modified in the
Beeper.ini file – these thresholds will be applied to all MXEncoders. Alert messages
received by the pager have a simple format of “Player xx: Message type Event Value”
where Message type will either by Impact Thres, Temp Thres, or Crit Temp and
Event Value is the value associated with the alarm. Crit Temp is the temperature of the
MXEncoder that is 3 deg above the standard Temp Thres. Use Test Event Beeper
under the Tools menu item on the menu bar to test the Alarm Transmitter and Pager.
Once executed, a simple message (Player 0: FALSE ALARM 0.0) should be received by
the Alarm Pager within 5 secs.
The Impact Qualification menu option is used to activate/deactivate a neural-network
based algorithm to determine whether impacts are valid or invalid. The impact
qualification only takes place on data that is being sent to the Alert Pager to minimize
the occurrence of false impacts. The algorithm was developed using data collected by
Virginia Tech during the 2003 season. As more data are collected and analyzed, the
algorithm will get better. There may be times throughout the season where we may
need to upgrade the algorithm to provide a better service to our users.
In the unlikely event of wireless communication failure, impact data are still recorded
onboard the MXEncoder and can be retrieved later in an environment with “cleaner” air.
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