Spectrum Technologies SPAD 502DL Plus Data Logger Manual page 9

The data is separated into 4 fields: Latitude and Lon-
gitude (blank if a GPS unit was not connected),
SPAD and Other Info. The last 2 fields are the data
value and reading number respectively.
Relationship between the SPAD buttons and the
data logger
Logging sessions are started and completed by turn-
ing the meter on and off. The start of a logging ses-
sion is indicated by the data line "Logger Started." If
a GPS signal was found at the start of a logger ses-
sion, a time stamp is included on the "Logger
Started" line.
The data logger captures two pieces of information.
The data records sent by the SPAD meter following
a measurement and the accompanying GPS coordi-
nates (if the receiver has been correctly connected
and located, see p. 6). The SPAD data record con-
sists of only the sample number and the measure-
ment value. Pressing the AVERAGE button does
not prompt the SPAD meter to send a data record.
Pressing the 1 DATA DELETE button causes the
SPAD meter to move the sample number back to the
previous value. Only the most recent data point can
be deleted. The 1 DATA DELETE button does not
erase anything from the data file itself. However,
data points that have been deleted can be identified
by locating consecutive data records that have the
same sample number (see lines 13 and 14 in fig. 4).
Pressing the ALL DATA CLEAR button simply sets
the sample number back to 1. No data will be
cleared out of the data file as a result of hitting this
button.
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