Quatech Audio/Video Capture USB 2.0 Dokumentacja Pobierz pdf (Strona 369)

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101

z.one ultra and z.one ultra sp OPERATOR MANUAL 15-3



 Image too soft or hazy

• Increase Edge setting

• Decrease Persistence setting

 Image too much contrast

• Increase Dynamic Range setting

• Decrease Map setting

• Use Compounding mode

 Image grainy

• Decrease Edge setting

• Increase Frequency

• Increase Persistence setting

• Use Compounding mode

 Insufficient resolution

• Increase Frequency

• Zoom to area of interest

• Use Optimize sound speed correction (ZST)

• Use a higher frequency transducer for the application

 Insufficient penetration

• Decrease Frequency

• Use a lower frequency transducer for the application

 Lost part of image

• Make sure gel covers complete face of transducer

• Make sure transducer is in complete contact with patient

• If a transducer cover is used, remove air bubbles between cover and

transducer face

 No (or poor quality) B-Mode Image

• Make sure the brightness and/or contrast settings for the LCD Display have

not been altered from proper settings. For information about LCD Display

settings, see

page 2-6.

NOTE: To ensure the quality of the grayscale resolution of the LCD Display, use

the grayscale test pattern (via the Diagnostic menu) available on the

SmartCart/

SmartCart sp

. Ensure that all shades can be visualized, making small

adjustments to brightness and contrast from factory defaults, as required, to see

all intensities.

• Adjust the B-Mode Gain control.

• In the onscreen menu, adjust the A Output (acoustic power) level.

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