San Jose Navigation GPS Mobile Locator GM-158-USB Manual de usuario descargar pdf (Pagina 15)

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How well the soil type selected matches the actual ground conditions

determines the accuracy of the depth scale. In poor soil conditions

selection of the deep depth scale may only yield GPR data to depths less

than a few feet/around 1 meter due to attenuation of the GPR signal.

Therefore, objects may exist but not be displayed on the screen because

they are well below the penetration depth of the signal. With experience the

operator can readily determine when the radargram is displaying

attenuated or noisy signals, which typically appear as snow (see Chapter

5).

3.2.6 Regional options

By choosing regional options there is a possibility to

change language or the measuring scale. Use the turn-

push button to select your choice and press. Save your

settings before closing the window.

3.3 Start

To start scanning just press and the following screen will

appear. The radar data will be shown on the black screen as the unit is

moved forward.

3.4 Stop

Selecting the profile is stopped and remains on the screen until a

new measurement is started or until the program is ended. There is no

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San Jose Navigation GPS Mobile Locator GM-158-USB Manual de usuario Pagina 15