POS MV V5 Installation and Operation Guide
POS-GPS
Timing
Copyright © Applanix Corporation, 2017
H-7
POS outputs data in NMEA and Binary formats in addition to the ICD format described. Not all formats
have a time field, the assumption being that they are output with minimal latency with respect to their
Time of Validity. For those formats that do incorporate a time field, POS will insert the Time of Validity of
the data in the appropriate time base.
Event Time Tagging
Event inputs can be used to capture any external event whose time or distance when the event occurred
is important for processing the mission data. The user must arrange for the external equipment to
generate a digital pulse. POS is configured to detect the event pulse from the POSView
Settings
–
Events
window. Upon detecting an event input pulse, POS will record the time and distance into an ICD
Event group, within 1
μ
s of the pulse edge. The time and distance types will be the same as configured
for all other ICD groups. These Event ICD groups can be output or logged in the same manner as other
ICD groups.
The Events pane of the POSView main window displays the last times and counts for events 1 and 2. To
view all the events, open the POSView
View
–
Event Data
window.
ICD groups 5, 6, 30 and 31 correspond to Events 1, 2, 3 and 4.