GE M
EDICAL
S
YSTEMS
D
IRECTION
2392751-100, R
EVISION
3
V
IVID
™ 4 S
ERVICE
M
ANUAL
7-24
Section 7-3 - Performing Front End (FE) Diagnostics
Figure 7-13 Ultrasound Scope Window
6) Under
Auto Detect
, click the
Start
button. Checking of the test results commences and the light
adjacent to the button flashes green and continues to flash while
Auto Detect
is in progress. If a fault
is detected, the flashing light changes to red and an error log is displayed listing the channel/s on
which the test failed.
Alternatively, review the information manually, using the scroll arrows on the right of the
Ultrasound
Scope
window to select a vector between 0 and 63. The selected vector is displayed in the
Vector
#
field and its test results are displayed in the
Spectrum
area.
Check the test results for each vector, as follows:
•
Verify that the RMS level displayed in the
RMS
field is above 84 (in absolute value).
•
Verify that the amplitude at frequency 2.5 is within a range of -5 to -20.
•
Verify that the amplitude at frequency 5 is below -40.
•
Verify that the amplitude at frequency 7.5 is below -60.
Note:
If the RMS level is above or below the specified level, reboot the system, perform
calibration and repeat the test.