Humboldt 5000 BLU Light Weight Deflectometer - Manual (Page 32)

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5. Test Execution ‘TERRATEST 4000 USB’ (for ‘TERRATEST 5000 BLU’ see page 38)
5.1 Preparing the Testing Point
Place the load plate on the ground, ensuring full and even contact between the
load plate and the ground. Create a smooth and level surface on the area where
the load plate will be placed. This can be done by moving the load plate back
and forth, or by using appropriate tools (such as a trowel). Remove any loose
soil from the area. In case of soil irregularities, spread a thin levelling layer of
fine-grained quartz sand. Make sure to add only a few millimetres; it should
compensate only for uneven patches under the load plate. Next, place the load
plate on top and move it back and forth to reduce the thickness of the sand
layer. Full contact between the load plate and the test area is essential.
5.2 Test Execution / Data Input Function
After preparing the testing point and placing the load plate on the ground, place the loading device in the
centre of the sensor dome on the load plate.
Connect the sensor dome of the load plate with the testing computer, using the measuring cable.
Press and hold the start button to turn on the testing computer. To activate the backlight of the graphic
display, press the start button for approximately three seconds, when turning on the device, until the start
screen switches automatically to ‘STATUS REQUEST’.
D I 3 0 / 0 6 / 1 3 1 5 : 5 0 : 2 2
OK
OK OK
GPS
6 , 3 V
D I 3 0 / 0 6 / 1 3 1 5 : 5 0 : 2 2
?
? ?
GPS
6 , 3 V
W e l c o m e t o T E R R AT E S T
0 . 1 7
T E R R A T E S T 4 0 0 0
DATA INPUT ?
YES NO
When turning on the testing computer with the backlight off, the start
screen will show the ‘TERRATEST 4000 USB’ logo and the firmware
version number for approximately three seconds, before it switches
automatically to ‘STATUS REQUEST’.
During ‘STATUS REQUEST’ the computer checks the sensor connection,
USB stick, GPS, and the current battery charge, and confirms that
everything is working correctly by showing ‘OK’. If one of these features
is unavailable, a ‘ ? ‘ will be shown instead. Checking the GPS connection
can take 2-3 minutes. If the sensor connection is not established, the
computer will not progress to the measuring mode and no test can be
performed. The current battery charge is shown as a small battery icon,
indicating the current level of charge.
If the USB stick is not recognised, turn the device off, insert the USB stick
again and turn the device back on. If the USB stick is still not recognised,
check that it has been formatted correctly. The USB stick can be formatted
on a PC by choosing ‘format...’ from the context menu which appears
when right-clicking on the drive icon.
By pressing the start button again you will be forwarded to the text input
function and ‘DATA INPUT?’ will appear on the screen.
You can now choose to perform the test with or without data input.
STATUS DISPLAY
DATA INPUT FUNCTION