Spectracom SecureSync 1200 User Reference Manual page 198

3.3 Managing References
Normally, the onboard GNSS receiver will track and adjust the antenna position during the so-
called GNSS self survey , which is performed during initial commissioning of a SecureSync
unit, or when rebooting a unit after it had been powered down for some time ("cold start").
Depending on where your GNSS antenna is installed and thus, how good the reception is, the
self survey may be adequate for most applications.
Setting a Manual Position , however, i.e. manually applying your current geographic position
data (Latitude, Longitude, and Altitude) may be necessary if your GNSS receiver could not com
plete its survey due to poor reception.
In some cases, setting the position manually may also help to reduce the amount of time needed
for the initial position "fix", i.e. for SecureSync to synchronize with the satellites in view.
Note that this position will also be used if Apply A-GPS Data is checked.
To manually set your position:
1.
Determine your geographic position. For more information, see "Determining Your Pos
ition" on the facing page.
2.
Navigate to INTERFACES > REFERENCES: GNSS 0 . In the GNSS 0 status window, click
Edit in the lower left corner. The GNSS 0 window will open:
3.
Under Manual Position Set accurately enter latitude , longitude (both in decimal
degrees), and altitude (in meters [
use this data during the satellite tracking/adjustment process, which typically leads to a
quicker "fix". It is recommended to enter the position as accurately as possible.
182
Note: When manually setting a position, SecureSync must be in one of the sta
tionary modes, Standard
Mode" on page 172).
or Single Satellite (see "Selecting a GNSS Receiver
WGS 84 ]) of your GNSS antenna, SecureSync can
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3 SecureSync User Reference Guide Rev. 23