D
IRECTION FR091521, REVISION 1 VIVID S60N/VIVID S70N BASIC SERVICE MANUAL
10-26 Section 10-3 - Why Perform Maintenance Procedures?
PRELIMINARY
NOTE: Follow manufacturer’s recommendations for handling saline solution. Refer to their Material Safety Data
Sheet (MSDS) for more information.
NOTE: Each probe will have some amount of leakage current, dependent on its design. Small variations in
probe leakage currents are normal from probe to probe. Other variations will result from differences in
line voltage and test lead placement.
The ultrasound probe’s imaging area is immersed in the Saline solution along with a grounding probe
from the test meter to complete the current path.
NOTE: The Saline solution is a mixture of water and salt. The salt adds free ions to the water, making it
conductive. Normal saline solution is 0.9% salt and 99.1% water. If ready-mixed saline solution is not
available, a mixture of 1 quart or 1 liter water with 9 or more grams of table salt, mixed thoroughly, will
substitute.
Figure 10-218 Set Up for Probe Leakage Current
Figure 10-219 Test Set Up with Meter
1. Ultrasound System
2. Tester
3. Neutral Switch
4. Ground Switch
5. Polarity Reversing Switch
6. Meter
7. Isolator
8. Ultrasound Probe
9. Saline Probe
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