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FILTER_n
Filter Select
Syntax:
FILTER_n <filter>
where n is either A or B
Parameters:
The parameter <filter> is an integer in the range 0 to 3 inclusive. 0 corre-
sponds to no filtering, 1 to analog filter only, 2 to digital averaging filter only,
and 3 to analog and digital filters combined.
Function:
This command selects a filter combination to be used to condition readings
taken from the detector. The choices are to have no filter at all, an analog
filter, digital averaging filter, and both the analog and digital filters. The digital
filter processes every signal reading by averaging it with the last 9 readings
taken.
All detectors signals are filtered to some extent even without the analog filter
feature. By enabling the analog filter the signal is filtered by a 5 Hz low pass
instead of the standard filter. The analog filter feature only applies to Low
Power detectors when not in P-P mode. For High Power and Energy detectors,
the analog filter feature is not available.
If an attempt is made to enable the analog filter for a detector that does not
support it, an execution error will occur.
Related Commands:
FILTER_n?
FILTER_n?
Filter Query
Syntax:
FILTER_n?
where n is either A or B
Parameters:
None
Function:
This query returns a value that represents the filter combination currently
being used to condition readings.
Returns:
<filter>
<filter> is of type <number> in a range of 0 to 3 with 0 corresponding to no
filter, 1 to analog filter only, 2 to digital averaging filter only, and 3 to analog
and digital filters combined.
This query will always return a 0 or 2 for High Power and Energy detectors
because the use of the analog filter is not allowed with these types of detec-
tors.
Related Commands:
FILTER_n
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