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(1) Turn Shuttle Button up and down to select the lower limit in 5 BPM
steps and press the button to set it.
k. LIMIT-1 (Limit for 2MHz BEEP mode)
In case maximum or average blood velocity exceeds the limit, beep sound
will be heard.
(1) Turn Shuttle Button up and down to select the limit in 1 cm/s (0.1 kHz)
steps and press the button to set it.
l. LIMIT-2 (Maximum / Average for 2MHz BEEP mode)
(1) Press Shuttle Button to change the mode as follows:
• MAX:
Beeps when maximum velocity exceeds limit.
• AVE:
Beeps when average velocity exceeds limit.
m. OTHERS - LANGUAGE
(1) Turn Shuttle Button up and down to select the language you wish for
menus and messages, and press the button to set it.
n. OTHERS - UNIT (cm/s / kHz)
(1) Press Shuttle Button to change the unit of blood flow as follows:
• cm/s:
Blood flow velocity
• kHz:
Doppler-shifted frequency
o. OTHERS - FILTER (Arterial / Venous filter)
The high-pass filter cuts off Doppler signals with lower frequencies than
filtering frequency (200 or 80 Hz) for optimal audibility.
(1) Press Shuttle Button to change the filter as follows:
• ARTERIAL:
For arteries (200 Hz)
• VENOUS:
For veins (80 Hz)
p. OTHERS - SMOOTH (Smoothing filter)
(1) Press Shuttle Button to change smoothing frequency as follows:
• NORMAL:
For normal signals (10 Hz)
• LOW-PASS: For noisy signals (5 Hz)
