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EM61LX2 Data Logging System (DAS70-AR2)
GSA are received from GPS. The last label
Sat
and following number shows number of currently
tracked satellites. Refer to section 4 (Set Port for GPS), Appendix A, and to GPS manuals for more
information about GPS parameters.
Several available field options are listed at the bottom (in form of buttons) of the Stand By mode
window. They will be described in the following section 7.4.
7.3 Logging Mode
The Logging mode is enabled by tapping on the
GO
button (or the <
ENTER
> key if button
GO
is highlighted) in Stand By mode. After this button is pressed the list of buttons at bottom of the
screen will be replaced by one "Pause" button, label Stand By will be replaced by label
Logging
(at
the top of the display) and data will be logged in the mode corresponding to the selected EM61-
LX2 mode in the Survey Setup menu. All labels and parameters (with the exception of buttons
representing Stan By mode options) are the same as in Stand By mode and they are described in the
preceding section 7.2. The screen in Logging mode is presented below (please note red highlighted
background for channels LE and LL that indicates Alarm for Left Sensor).
After the screen changes to Logging mode the current station (label
Stn:
) is updated according to
the station interval. Similarly, if GPS Input was enabled, total number of GPS positions (label
Pos
) in the data file is incremented every time (usually once a second) GPS position is written to
the file. Profile curves (for channels selected in Display Options window) are updated after each
reading is written to the data file.
There is only one option available in the Logging mode - pause logging. After a Pause button is
tapped or Pause key (any key or other Pause Key selected in Logger Setup window) is pressed the
recording is stopped and the Logging mode returns to the Stand By mode. In Stand By mode the
EM61-LX2 data will be displayed with the update rate approximately 10 readings per second,
however data will not be saved in the log file and profile curves will be not updated.
Exit from the logging session and access to field options are available only from the logging window
in Stand By mode.
