Instruction manual

MXS-EVO - MANUAL
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MXS-EVO – Manual – Rev 1.7 - 37 -
Statistics
The device stores some useful statistical informations to evaluate the proper functioning over time:
Holdover Num shows the number of times that the GPS radio has entered into holdover mode in response to
a problem (under optimal conditions should be low)
Holdover Max shows the duration of the longer hold-over (under optimal conditions should be low)
Quality Min indicates the smallest GPS antenna quality factor recorded (under optimal conditions should
be high)
PPS Dist Max indicates the maximum distance affected by the PPS generated by the GPS radio (under
optimal conditions should be low)
Pos Alarm Num indicates the number of times that there was a wrong geo-positioning under optimal
conditions should be low)
It's a good idea to reset the stats before a capture session, because some values may be spurious in the first
phase of synchronization or acquisition of satellites by the GPS radio.
Automatic Site Survey
In certain situations it may be convenient activate the Positioning Mode of GPS radio in Automatic Site
Survey. In this mode the radio privileges the accuracy of temporal information at the expense of that position
(as long as the antenna is not moved), so as to preserve signal integrity PPS in limited visibility conditions or
in the GPS constellation or in presence of potential sources of interference.
If there are problems or abnormalities during the first installation or after moving the unit in a distant
geographic location, GPS radio can be resetted by deleting the almanac and positioning information that is
saved by the appropriate entry in the GPS menu. Should be also necessary to reset the device in Automatic
Site Survey mode, since the radio, after completing the survey - which takes about 3 hours - automatically
returns to Position Hold mode.
POSITION HOLD