Orolia GSG-5 Series, User Manual With Scpi Manual, Page: 283 / 392

6.3.3.46 SOURce:SCENario:ADVLOG?
Function
The Advanced Log feature queries log records of the specified log. This feature is effect-
ive as of firmware version 6.7.1.
The following logs can be queried:
RSG log – contains realtime movement parameters of the object being modelled
along with time information;
SAT log – contains various data describing modelled satellites movement para-
meters along with time.
NAVMSG log – contains navigation data messages transmitted by simulated satellite
Command Syntax
SOURce:SCENario:ADVLOG? <logID>[,<filter1>,<filter2>,...,
<filterN>]
<logID>
– log identifier that specifies what log data to request
<filterX>
– optional filter expression that allows to include into response only specified
record types
Mechanism
When a scenario is running, the GSG unit internally creates log records at predefined time
intervals and puts them into a limited-size queue with a FIFO (First In – First Out) structure
where they remain for some time (several seconds). As the scenario continues to run, new
records get added into the log and old records get removed either automatically or by
request from the user. Each type of log features its own (independent) queue.
RSG log records are created every 100 ms. SAT log records are created every 1 second.
When requested using the
sour:scen:advlog?
command, log records are removed from
the queue starting with the oldest available records. They are returned as text lines con-
taining comma-separated fields. These lines can be easily processed by user-developed
software to extract specific fields, or they can be stored in a csv-file allowing for further ana-
lysis with spreadsheet software.
When the user does not request any log records, the latest log records remain in their
queues until the unit is requested to start a new scenario. Hence it is possible to get remain-
ing records even after a scenario was stopped.
One possible approach to using the advanced log feature is to periodically make a series of
repetitive queries, waiting for an empty response in each series. An empty response sig-
nifies that the most recent data have been received and no new data is available so far.
6.3 Command Reference
User Manual GSG-5/6 Series Rev. 27 267