Cirs Doppler String Phantom 043, User Manual, Page: 8 / 32

5
Connecting the Controller
You are now ready to connect the controller to the motor and the power supply.
1. Before plugging in the controller make sure the power switch on the back is turned off.
2. Plug the motor cable into the Drive Motor receptacle on the back of the controller.
3. Plug the power cable into the AC Receptacle and into an AC power source. If using in a country other than
the United States you will need to connect the transformer as well. This can be purchased for an additional
price.
SPECIAL FEATURE
Using the ECG Output
The ECG (electrocardiogram) output is an output that the user can elect to use to synchronize the waveforms to
the ultrasound scanner. It is located on the rear panel of the phantom. This is a rarely used feature that can aid
ultrasound researchers as they test new ultrasound machines. Since most users of this phantom do not deal
with that aspect it may be simply ignored.
When used, this output will generate a signal pulse at the very beginning of each test or physiological waveform.
That pulse is 10 milliseconds long and rises from zero volts up to five volts and then back down. This may be
used to tell the ultrasound researcher exactly when the waveform started and is useful for internal adjustments to
the ultrasound scanner.
Figure 4: Scanhead clamp and articulated arm
About Scanning Angles:
The best angle for most Doppler
ultrasound scans is 60°.
The string target in the
Doppler String Phantom is set
at an angle, so that a scanhead
aimed straight down will be at
a 60° angle to the string. Of
course, you should scan at the
angle that is needed for your
tests.