Technical Data / Information
7.12 Spectral Doppler
Working Modes: Pulsed Wave Doppler (Single Gate), PW
Continuous Wave Doppler, CW
Transmit frequencies: PW-Doppler: 1 - 16 MHz
CW-Doppler: 2 - 7.5 MHz
Pulse Repetition Frequency (PRF): 1.3 ...22 kHz
Sample Volume (Doppler Gate): Length: 1, 2.5, 6, 10, 15 mm
Position: 5 mm to B-scan end
Angle correction: - 85° … 0° ... + 85°
Power control range : 32dB
GAIN range: - 15 … + 15 dB
WMF (wall motion filter): 0...400 Hz
Zero line shift: ± PRF/2, ± 8 steps
Spectrum Analyzer: FFT (Fast Fourier Transformation)
Max. 512 channels, 255 amplitude levels
Display scroll speeds: 100, 150, 225, 300 SL/s (SL.. spectral lines/sec.)
Review (memory times): > 60 s
Measurable flow velocities:
Pulsed wave: 1cm/s.....3m/s (a = 0°, 3.5 MHz, max. zero shift)
1cm/s.....6m/s (a = 60°, 3.5 MHz, max. zero shift)
Continuous wave: 1cm/s...10m/s (a = 0°, 2.25MHz, max. zero shift)
1cm/s...20m/s (a = 60°, 2.25MHz, max. zero shift)
Signal processing: Reject: 6 steps
Dynamic range: 20 to 150 (step size = 5)
Measuring value display: kHz, cm/s, m/s
Image formats: D, 2D+D (three different formats 40/60, 50/50 and 60/40)
Simultaneous Mode: 2D/D, 2D/D/CFM and 2D/D/PD
Audio-Modes: Stereo (both directions separately in both channels)
Audio Volume, balance: Adjustable, control knobs
Voluson
®
730 - Instruction Manual
105838 Rev. 3 7-9
To Next Page
Loading...
