Master mechanic Security+ 642-2MM Manuel d'instructions télécharger pdf (Page 218)

Page 208 MultiRanger 100/200 – INSTRUCTION MANUAL 7ML19981FB06

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Parameters

P832 TVT Shaper Adjust

Allows manual adjustment of the TVT curve. Use this parameter in conjunction with

Dolphin Plus PC Software.

Use this feature to bias the shape of the TVT curve to avoid selecting false echoes from

fixed objects.

Adjustment to this parameter is best done while viewing the echo profile with Dolphin

Plus. Refer to the Dolphin Plus online help for details.

The TVT curve is divided into 40 breakpoints, accessible by enabling the point number as

the breakpoint index field. Each breakpoint is normalized to a value of 0, as displayed in

the parameter value field. By changing the breakpoint value, up or down, the intensity of

the bias applied to that breakpoint of the curve is respectively changed. By changing the

value of adjacent breakpoints, the effective bias to the shaper can be broadened to suit

the desired correction. In the case of multiple false echoes, shaping can be applied along

different points of the curve. Shaping should be applied sparingly in order to avoid

missing the true echo.

P833 TVT Start Min

Use this feature to adjust the TVT Curve height to ignore false echoes (or pick up true

echoes) near the start of the Echo Profile.

Enter the minimum TVT Curve start point (in dB above 1 uV RMS).

This feature should only be used if increased Near Blanking (P800) would extend farther

than desired into the measurement range.

Primary Index

Single Point Model Dual Point Model

Breakpoint Transducer and Breakpoint

Values

Range: -50 to 50

Preset: 0

Related • P831 TVT Shaper

Primary Index

Single Point Model Dual Point Model

Global Transducer

Values

Range: -30 to 225

Preset: 50

• P800 Near Blanking

• P834 TVT Start Duration

1 2 ... 213 214 215 216 217 218 219 220 221 222 223 ... 279 280

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Master mechanic Security+ 642-2MM Manuel d'instructions Page 218