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“\dat” directory using the same name as chosen for the real-time data file but with
a “.gps” extension. See page 27 for
GPS test
directions.
Derived units may also be displayed. Please refer to the
Derived units
section
(p.30) in the
Configuration
menu for more details.
Enabling logging
Once the parameters have been set, the logger can be programmed by clicking
the
Enable logging
button. If any data are currently in the logger memory, a
dialog box will pop up providing a final chance to save before the memory is
cleared.
Auto-ranging sensors
Two auto-ranging sensors are supported by RBR, the Seapoint Fluorometer and
Seapoint Turbidity Sensor. These sensors allow the logger to change the gain
settings on the front-end amplifiers to define one of four pre-determined ranges.
For the fluorometer the ranges have full-scale values of: 5ug/l, 15ug/l, 50ug/l, and
150ug/l. For the turbidity sensor the ranges have full-scale values of: 25FTU,
125FTU, 500FTU, and 2500FTU. In full auto-ranging mode, these sensors will
be driven by the RBR Logger into the most appropriate range for the level of
property being measured. In a fixed gain mode, the user may lock the gain to
one of the ranges for the duration of the deployment.
On the
Setup
window, access to the auto-ranging sensors appears as a button in
the
Advanced features
area as shown. Pressing the button produces the
Range switching channel setup
window which allows the user to select
Auto-
ranging
or a
Fixed gain
. The
Setup
window shows the mode in that auto-
ranging is purple and fixed gain is green.
Although readings are taken with different front-end amplifier gains, the data are
stored in the logger referenced to the maximum full-scale range. Hence all
turbidity readings are referenced to 2500FTU. This means that the calibration
