GE Vivid 4 BT03 RFI Service Manual page 277

Table of Contents

2392751-100, R

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:

Note: If the RMS level is above or below the specified level, reboot the system, perform

calibration and repeat the test.

Figure 7-13 Ultrasound Scope Window

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.

Section 7-3 - Performing Front End (FE) Diagnostics