Spectracom GSG-5 series, User Manual With Scpi Manual

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Looping : The scenario will be replayed infinite times, re-starting every time after its
set duration has expired.
For this mode, the trajectory should be
loop-shaped , i.e. have the same start/end point.
Otherwise, an error will likely be thrown once the receiver- under- test upon the first
replay is moved from the end point to the start point in an unrealistically short time.
Forever : The scenario will run infinitely (the duration time will be grayed out).
If your trajectory is loop-shaped , i.e. it has the same start/end point, the trajectory will
be followed over and over again (just like in the above-mentioned Looping mode), but
the simulation time will continue to elapse (contrary to the
Looping
mode, which will
re-
start the simulation time with every new scenario execution.
If your trajectory is
not
loop-shaped, in this mode the receiver will travel along the last
trajectory vector infinitely.
Note: The option Endless only works, if the ephemeris option is set to Down
load
. (See also: "Ephemeris" on page 44 )
One-Go : The scenario will be executed once, for the set duration.
Upon completion of the scenario execution, GSG will return to the Main menu.
3.5.3 Latitude, Longitude, Altitude
The position is specified using WGS84 (for more information on the
World Geodetic System
,
see
Wikipedia
).
Note that the use of the WGS standard also applies to the altitude (ellipsoid height), and that
this altitude is NOT the same as the MSL often output by receivers.
Select a different coordinate input format by pressing the +/– (format) key repeatedly. The
choices are:
decimal degrees
degrees-minutes
degrees-minutes-seconds
ECEF
(Earth-Centered, Earth-Fixed) format.
3.5.4 Trajectories
Note: This feature is not available in GSG-51/52/53.
In the context of GNSS testing, a trajectory is the predefined path a receiver is traveling during
the execution of a scenario. GSG-5/6 can be used to simulate virtually any user trajectory. You
can:
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CHAPTER
3
•
User Manual GSG-5/6 Series Rev. 26
3.5 "Select" Menu