Ultrasound Duty Cycle Test - Chattanooga Intelect Genisys 2776 Intelect Genisys 2782 Intelect Genisys 2792 Service Manual

5- TROUBLESHOOTING

5.9 Ultrasound Duty Cycle Test

This test is performed using only the 5 cm
A. Ultrasound Duty Cycle Test Procedures
1. Set up Ohmic Instruments UPM DT 10 or UPM DT
100 Ultrasound Power Meter per Operator's
Instructions and fill test reservoir with Degassed
Water.
! WARNING
USE ONLY DEGASSED WATER IN POWER METER FOR
TESTING ULTRASOUND APPLICATORS. USE OF OTHER
TYPES OF WATER WILL CAUSE FALSE TEST RESULTS. SEE
PAGE 10 FOR DEGASSED WATER RECIPES.
DO NOT AERATE WATER WHEN FILLING POWER METER.
2. Place an Applicator into the Power Meter retainer. As
per Ohmic Manual, make certain the Applicator's
aluminum face is submerged in the degassed water
and centered directly over the S.S. cone.
3. "Zero" the Power Meter.
4. Turn the Ultrasound Therapy System on.
5. Press the button until "Watts" appears in the
intensity area of the display.
6. Increase Intensity (
7. Press "Start".
8. Press the button until "10%" is displayed in the
Duty Cycle area of the display.
9. Compare Power Meter readings to Figure 5.7 for
each of the following Duty Cycle settings listed in the
chart.
10. Press the button until "3.3 MHz" is displayed in
the Frequency area of display. Repeat test and
compare readings to Figure 5.7.
B. Ultrasound Duty Cycle Test Results
1. Duty Cycles fall within the specified ranges as listed
in Figure 5.7.
a) Unit passed test
2. Readings fall outside specified ranges of Figure 5.7.
a) Possible bad Degassed Water in Power Meter.
b) Possible use of Power Meter other than Ohmic
Instruments UPM DT 10 or UPM DT 100
Ultrasound Power Meter.
c) Possible bad or out of calibration Applicator.
d) Check Ultrasound Board.
e) Check Control Board.
2 Applicator.
) to maximum.
®
Intelect /Genisys
DUTY CYCLE SPECIFICATIONS
APPLICATOR SIZE
5 cm 2
14
®
Ultrasound Therapy Systems
DUTY CYCLE OUTPUT RANGE
10% 0.8 - 1.2
20% 1.6 - 2.4
50% 4.0 - 6.0
100% (Continuous) 8.0 - 12.0
FIGURE 5.7