Resetting The Gnss Receiver - Safran VersaSync User Manual

3.3 Managing References
The following formula can be used to calculate antenna cable delay:
D = ( L * C ) / V
Where:
D = Cable delay in nanoseconds
L = Cable length in feet
C = Constant derived from velocity of light: 1.016
V = Nominal velocity of propagation expressed as decimal, i.e. %66 = 0.66 Value is
provided by cable manufacturer.
When using Safran LMR-400 or equivalent coaxial cable, this formula equates to
approximately 1.2 nanoseconds of delay per every foot of cable. To calculate the
Offset value (cable delay), multiply the length of the entire cable run by "1.2" and
then enter this value into the Offset field.
E x a m p l e s
c a b l e d e l a y s :
100 feet of cable = 120 nanoseconds of cable delay
200 feet of cable = 240 nanoseconds of cable delay
300 feet of cable = 360 nanoseconds of cable delay
3.3.3.7

Resetting the GNSS Receiver

The Reset Receiver command causes the GNSS receiver to execute a cold start:
All data will be erased from the volatile receiver memory. Only non- volatile
memory is preserved.
Note that resetting the GNSS receiver is not the same as
Receiver Position" on the facing
To reset the GNSS Receiver:
208
o f L M R - 4 0 0
Caution: Resetting the GNSS receiver may become necessary in the
rare event of internal communication issues, and is typically ONLY
required if Safran Technical Support
command.
( o r e q u i v a l e n t )
advises you to execute this
page.
CHAPTER
c o a x
"Deleting the GNSS
•
3 VersaSync User Manual Rev. 12