San Jose Navigation GPS Mobile Locator GM-158-USB Manual de usuario descargar pdf (Pagina 14)

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3.2.2 Color

The colour scheme of the radargram can be

changed, between grey scale and two different

colour schemes. Grey scale is the default setting.

3.2.3 Soil type

Some general soil types are categorized in

the table displayed for soil type. The table is

factory set to suit your area on delivery but

note that there are local variations of soil

types.

Choose soil type that most closely matches what is observed at your

particular project site. The soil type selection allows adjustment of the

depth scale for differing soil conditions. This is a critical setting if accurate

depth information is required. It should be noted that soil conditions can

vary rapidly at any location. Therefore all depth information must be used

with caution.

3.2.4 Acquisition Mode

The trigger provides information to the horizontal

distance-scale about the length of the profile. The

internal trigger is placed in the left back wheel and is

connected to the control unit with the encoder cable.

Default setting is “Internal forward”. In rough terrain, it

may be easier to pull the Easy Locator backwards and

use the setting “Internal backward”.

The choice External is used for instance for the encoder wheel on the RTC

(see Section 2.1.3). Time triggering can be used in very rough terrain. If

using time triggering no horizontal distance information is available for the

profile.

3.2.5 Depth window

The depth window determines the depth

scale shown on the monitor, but the soil

setting also influences it.

Note that selection of a depth window does not influence the actual depth

penetration of the GPR signal but only the maximum amount of data that

can be viewed on the screen. Three depth ranges are available: shallow,

medium and deep.

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San Jose Navigation GPS Mobile Locator GM-158-USB Manual de usuario Pagina 14