Orolia GSG-5 Series, User Manual With Scpi Manual, Page: 58 / 392

get into a conflict with the GLONASS time stamps and in this case the receiver will not out-
put any solution. This issue, especially with combined GPS+GLONASS scenarios, can be
avoided by simulating future dates.
3.5.2 Duration
The duration of the scenario replay can be set to a number of days, hours and minutes.
Any scenario can be run in three different modes:
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 Download . (See also: "Ephemeris" on page 47 )
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 Sys-
tem , 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
42 User Manual GSG-5/6 Series Rev. 27
3.5 "Select" Menu