NavCom SF-2050 Rev.D - Manual (Page 25)

SF-2050 User Guide - Rev. D
The SF-2050M 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 SF-2050M
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
3V (not exceeds 6V), and a minimum Low Level Input
of 1.2V. The minimum pulse width is 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 NavCom P/N 94-310062-
3003. Detailed specifications of the
Event Input and
cable wiring can be found in Appendix D of this User
Guide.
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