Leica Geosystems GPS System 500 - Technical Reference Manual - Manual (Page 252)

252 9. The CONFIG Key Technical Reference Manual-4.0.0en
Working Example 2
You need to complete a survey on
contaminated waste land and using a
gas analyser, you wish to measure
the level of different gasses at
various locations. When a button is
pressed on the gas analyser, it will
measure the level of 4 different
gasses and outputs the results as an
ASCII string. This ASCII string has
the following format:
$GS1 2.786<CR/LF>
$GS2 0.034<CR/LF>
$GS3 1.395<CR/LF>
$GS4 0.025<CR/LF>
where $GS1 to $GS4 is the Message
ID for the 4 different gasses followed
by the gas reading itself in ppm.
You wish that when a point is sur-
veyed, this ASCII string is split and
that each individual gas reading is
recorded as a separate annotation
such that annotation 1 would contain
the value 2.786, annotation 2 would
contain the value 0.034 etc.
To achieve this, each annotation
should be configured to accept only
one particular gas reading. The
Message ID line is used to “search”
the input for that particular gas
reading.
When each annotation is configured
for each particular gas reading the
CONFIGURE\ ASCII Input panel
should look as follows.
The waste land site can now be
surveyed. The co-ordinates of any
points can be measured and before
storing this point, the gas analyser is
activated to take a gas reading at
this point. The point can then be
stored and the 4 gas readings are
stored as individual annotations
along with this point.