User Manual Part 2

IS-900 User Guide Page 115 of 159
Tracking Statistics This option is used to display tracking status information for all
stations. G = Genlock indicator. It appears in the right lower
corner of the display if GENLOCK feature is on and working
properly. If the “G” is replaced with an “X”, this indicates the
GENLOCK feature in on, but a valid signal is not being
detected. See Appendix F for details about GENLOCK.
Row 1 (Stn) lists station numbers.
Row 2 (Status) displays the tracking status. Stations display
T when tracking position, and L (Lost) when position tracking
is not possible. If a station configuration is invalid or hardware
is not connected, X is displayed.
Row 3 (Meas) displays the number of range measurements
received by each station during the last cycle. A range
measurement is defined as an ultrasonic signal received by a
single microphone.
Row 4 (Rej) displays the number or range measurements
rejected by the system. This number should normally be zero.
Measurements can be rejected for one of the following
reasons:
o SoniDisc configuration (Constellation) is inaccurate
o Ultrasonic interference or reflections are creating false
measurements. Try increasing ultrasonic timeout. See
MU command in section 6.2.1.
o Extremely fast movements can sometimes cause some
measurements to be rejected.
Row 5 (TQ) displays the tracking quality of the station as a
percentage. It is a measure of the number of measurements a
station receives and the size of the range errors of the
measurements. 100% means that the station is tracking
perfectly and 0% means it is lost. To activate TQ display, right-
click and select option to enable.