GE Medical Systems LOGIQ ?200, Service Manual, Page: 205 / 212

GE MEDICAL SYSTEMS
LOGIQ 200 SERVICE MANUAL
2138853
PERIODIC MAINTENANCE 7–11
REV 3
7–3–4 Probe Leakage Current Test (Continued)
Meter Procedure Using Probe Adapter
The Dale 600/600E provides a method for testing probes independently from the system. The meter utilizes a
probe adapter to apply a test potential commonly to all connector pins.
The probe’s imaging area is immersed in a saline solution along with a grounding probe from the meter to
complete the current path. Saline solution is a mixture of water and salt. The salt adds a free ion to the water,
making it conductive. Normal saline solution is 0.9% salt or 1/2 gram salt per 1 liter of water. If saline is not
available, a mixture of 1 quart water with one or more grams of table salt, mixed thoroughly, will substitute.
CAUTION
To avoid probe damage and possible electric shock, do not immerse probes into any liquid
beyond the level indicated in the probe users manual. Do not touch the probe, conductive
liquid or any part of the unit under test while the ISO TEST switch is depressed.
Follow these steps to test each transducer for leakage current.
1. Turn the LOGIQ 200 unit OFF.
2. Plug the unit into the test meter, and the meter into the tested AC wall outlet.
3. Connect the probe for test with the meter’s appropriate adapter (Refer to ILLUSTRATION 7–6).
4. Plug the saline probe into the meter’s ”CHASSIS” connector (Refer to ILLUSTRATION 7–6).
Ultrasound
Probe
Probe Adapter
with probe
connected
AC outlet
Nonconductive
Container
Saline
Probe
Saline Solution
TRANSDUCER SOURCE LEAKAGE CURRENT TEST
ILLUSTRATION 7–6