GE M
EDICAL
S
YSTEMS
D
IRECTION
2392751-100, R
EVISION
3
V
IVID
™ 4 S
ERVICE
M
ANUAL
7-50
Section 7-3 - Performing Front End (FE) Diagnostics
3) Trackball to each of the following buttons in turn (in the order stated below) and press
Select
to
perform the specific test:
•
Normal channels:
Test the output channels from the input channels, as described in the
Normal Channels Diagnostic Tests
•
Expanded low channels:
Tests output signals in CW-Mode only, when the input channels are
connected to the output channels, as described in the
Expanded Low Channels Diagnostic
•
Expanded high channels:
Tests the output signals from the input of the high channels, as
described in the
Expanded High Channels Diagnostic Tests
•
Port Test:
Performs a general logic test, as described in the
•
Advanced board tests:
The advanced board tests are described in the
section, on page 7-59. This includes procedure instructions for performing the following tests:
•
•
•
•
•
•
7-3-9-2
Normal Channels Diagnostic Tests
Tests the output channels from the input channels. This test setting is used for all modes, except
CW-Mode.
The Normal Channels Diagnostic Tests check each amplifier output against the predefined output level.
This system test is performed in Phased Array Probe Simulation mode. The FEC board injects analog
signals to the Tx amplifiers inputs after the Tx switch. The test lasts approximately 4 minutes.
Note:
System re-boot is required if the tests are not being performed in the sequence described in the
Performing Front End (FE) Diagnostics
1) Disconnect all the probes.
2) Access the
F.B.
tab of the
FE Diagnostics
dialog box, as described in the
3) Trackball to
Pulser 1
(High Voltage Power Supply [HVPS] +/-80V) or
Pulser 2
(Low Voltage Power
Supply [LVPS] +/-40V) and press
Select
.
Trackball to the
Normal Channels Test
button and press
Select
. The normal channels diagnostic test
is performed, and the test results are displayed in the
Report
dialog box, as shown below:
