pulseEKKO PRO
4-Running in Scope Mode
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4
Running in Scope Mode
Once the System Setup parameters have been set, data collection can begin by selecting
1 - Run
pulseEKKO GPR
from the main menu. The screen shown in Figure 4-1 will be visible.
Turn on the transmitter and receiver and ensure that they are fully powered and initialized by checking that
the Power LED on the top of the unit has stopped flashing.
Scope Mode
(described in this section) is used to check that the system is running correctly before
starting to collect and save survey data in
Collect Line Data
or
Collect Grid Data
mode (Section 5: P69).
Figure 4-1: The Run menu allows the operator to find the pulse and set up timezero in Scope mode, collect Line data, grid data or
collect data without saving. If data are to be saved, the data directory number is selected using the A and B buttons.
Scope
mode is used to make sure that connections are correct, all parameters are properly set and valid
data are being collected. Scope mode displays the radar trace in the traditional oscilloscope scan format
(see Figure 4-2). Scope mode should normally be run first, prior to data collection and storage. Data
cannot be saved in Scope mode. Once the user is satisfied that everything is working, they can switch to
Collect mode to begin data collection.
Scope mode serves two main functions:
a) to ensure that valid data are being collected properly, and
b) to set the location of the transmit pulse (which is the reference timezero or the first break).
Selecting
Scope Mode
from the main menu displays a screen with
EXIT
,
SCALE
and
START
.
START
begins data collection.
EXIT
returns the user to the Run menu shown in Figure 4-1.
SCALE
allows
the user to modify the maximum amplitude displayed on the graph scale. This parameter may take on any
value between 1 and 50 millivolts. The default value of 50 is rarely changed.
