Effective Radiating Area Nominally 0.8 square cms +/- 20%
(1 cm head)
Nominally 5.0 square cms +/- 20%
(2.5 cm head)
Power/Intensity Display Accurate to +/- 10% of reading for
outputs in excess of 1 Watt.
ULTRASOUND MODULATION:
Modulation Modes Continuous
Pulsed
Pulsed Modulation
Pulse Frequency 100 Hz +/- 2%
Pulse Width 1.0, 2.0, 5.0 milliseconds +/- 2%
Pulse Duty Cycle 1:9 (10%), 1:4 (20%), 1:1 (50%)
respectively
BEAM NON-UNIFORMITY RATIO: 5:1 +/- 20%
TREATMENT TIMER:
Maximum Treatment Time 30 minutes +/- 2%
At Time Expiration Time display zeros and a 3 second
audible alarm sounds.
CONTACT CONTROL:
Function To detect poor acoustic coupling between the
ultrasonic treatment applicator and the patient.
On detection of contact loss The LED indicator on the selected applicator
handle turns red and, after a 2 second delay, the
treatment timer is halted. The ultrasonic output is
reduced to 0.2 Watts/cm
2
.
On detection of contact The treatment timer is restarted and the ultrasonic
output power is restored to the selected value.
The LED indicator on the applicator handle turns
green.
Purpose/Rationale Ensures the patient receives the required
ultrasound dose and prevents damage to the
ultrasonic treatment applicator by heat generated
in the transducer when it is operated unloaded at
high power levels.
Metron Accusonic Plus
__________________________________________________________________
Version 1.6 March 2002 Page 2 of 12
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