TD Mode
10.2.3 Quality
This control improves the Color Resolution by reducing the image frame rate alternatively it reduces
the Color resolution by increasing the image frame rate.
[Quality] control (flip switch)
There are three steps for the Color Quality:
high: higher Color resolution/ lower frame rate
norm: normal Color resolution/ medium frame rate
low: lower Color resolution/ higher frame rate
Remarks:
* The current quality status is displayed in the status area and on the screen [Qual ...].
* Changing the Quality is only possible in write mode!
10.2.4 Velocity Range (PRF)
The velocity range of the display is governed by the pulse repetition frequency PRF. The [PRF]
control changes the display range. As you increase the velocity range by that control, the PRF
increases. As the display scale increases, the maximum Doppler shift information that can be
displayed without aliasing also increases.
Use the [PRF] control to adjust the velocity range.
Switch upwards to increase the PRF.
Switch downwards to decrease the PRF.
Depending on the Box depth the possible maximum sampling frequency will be automatically
reduced. (If the sampling frequency is no more suitable for the selected depth.)
Changing the velocity range display unit from kHz to m/s or cm/s is to be done in the
TD Sub Menu
(chapter 10.3).
Remarks:
* The current sampling frequency is displayed on the screen [PRF ...]
* Changing the velocity range is only possible in write mode!
10.2.5 Invert
This function inverts the color display in relation to the direction of the flow.
The color of the color wedge inverts around the baseline.
key unlit Normal
key lit Inverted
Voluson
®
730Pro - Basic User Manual
105831 Rev. 0 10-5
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