NavCom RT-3020 Rev.A User Manual
Page 22
RT-3020 User Guide
3-20
The RT-3020M also can utilize an event input. This
input pulse can be used to synchronize any external
incident that requires precise
GPS
time tagging, such as
aerial photography. The action of a camera’s aperture
could send a pulse to the
Event
port of the RT-3020M
and have it output position information relative to the
time the photograph was taken. It requires input
impedance of 50 Ohms, a minimum High Level Input of
2.5V, and a minimum Low Level Input of 1.2V. The
propagation delay is less than 100nsec. The Event Input
latch can be configured to sync on the rising, or falling
edge of the event input pulse by using the appropriate
NavCom
proprietary command
. Connecting the shared
EVT MKR/CAN BUS port requires a five core 5mm
diameter cable fitted with a
LEMO
plug type
FGG.0K.305.CLAC50Z plus strain relief. This is available
as
P/N
94-310062-3003. Detailed specifications of the
Event
Input can be found on the NavCom website at