Sensors & Software pulseEKKO, Руководство по эксплуатации продукта, Страница: 153 / 251

Collecting Data
141
White = No Data (too fast!): 0 stacks
Yellow = Moderate quality: 1-3 stacks
Light blue = Better quality: 4-7 stacks
Dark Blue = Highest quality: 8+ stacks
7.1.2 Back-up Indicator
Line Scan mode incorporates a back-up feature to enable you to accurately locate targets and
mark them on the ground. The back-up indicator is only available for a survey where the trigger
is set to
Odometer .
After acquiring some data on the screen, move the system backwards over the line (Figure 7-8).
During back-up mode, there will be two indicators:
•
Position Indicator : The red vertical line corresponds to the location at the center of
the GPR sensor. As you pull the system backwards, the Position Indicator moves to
mark the current location of the cart in the image. A box appears with the current
position, relative to the start of the line, listed as the top number.
Figure 7-8: Back-up Indicator and Depth Indicator shown
•
Depth Indicator : A short red horizontal line corresponds to the current depth value,
as shown in the bottom number in the box. To determine the depth of an object,
move the indicator up or down by touching and dragging the horizontal line to the
desired location. Alternatively, you can also use the
Up and Down arrows on the 4-
way directional keypad. Note: make sure you have calibrated for velocity to ensure
depth accuracy (
Section 7.1.8).