GE H
EALTHCARE
D
IRECTION
FQ091013, R
EVISION
1
V
IVID
I
N
AND
V
IVID
Q
N S
ERVICE
M
ANUAL
Chapter 7 - Diagnostics/Troubleshooting
7-13
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ACW Matrix Test
The ACW (Analog CW) Matrix Test checks the path of all 32 RX channels to all VCA outputs
on the TR32B board. A test signal shifted from the mixer frequency is generated and the
receive signal amplitude and frequency is then checked. The frequency should be matched
to the frequency shift of the input signal (shown on the Test report).
For test procedure instructions, see the
ACW Matrix Test section, page 7-64
.
-
ACW Delay Range Test
The ACW (Analog CW) Delay Range Test checks the path of VCA outputs to the Delay taps
in all three frequency ranges. The expected results are shown on the Test report.
For test procedure instructions, see the
ACW Delay Range Test section, page 7-68
-
ACW Pre-Mixer Gain Test
The ACW (Analog CW) Pre-Mixer Gain Test checks the PM Gain level. A test signal shifted
from the mixer frequency is generated and the test compares the 0db RMS to the levels of the
other Gains. The RMS level is expected to be lower than the selected Gain level (as shown
on the Test report).
For test procedure instructions, see the
ACW Pre-Mixer Gain Test section, page 7-72
.
-
ACW BPF Test
The ACW (Analog CW) BPF Test is used to check the operation of all the Bend Pass filters.
A test signal is shifted from the mixer frequency and then the test checks the filter response.
Attenuation of the filters in different frequencies should be within pre-defined limits (shown on
the Test report).
For test procedure instructions, see the
ACW BPF Test section, page 7-75
.
-
ACW HPF Test
The ACW (Analog CW) HPF Test is used to check the operation of the High Pass Filters
(300Hz and 600 Hz). A test signal is shifted from the mixer frequency and then the test checks
the filter response. Attenuation of the filters in different frequencies should be within
pre-defined limits (shown on the Test report).
For test procedure instructions, see the
ACW HPF Test section, page 7-80
.
•
Pencil Test
-
Pencil Rx Test
When performing the Pencil Rx Test, no probes or jig are connected to the system.
This test is performed to check the receive functions. During this test, signals are transmitted
through the circuitry. The received frequency should match the transmitted test frequency, as
shown in the Test report.
For test procedure instructions, see the
Pencil Rx Test section, page 7-83
7-2-4-3
Monitoring Tests
7-2-4-3-1
Full System Monitoring Test
The Full System Monitoring Test performs a full sequence of all monitoring tests (as described below).
For test procedure instructions, see the
Full System Monitoring Test section, page 7-86
7-2-4-3-2
Fixed Voltages Test
The Fixed Voltages Test is used to check the Power Supply unit and to ensure that voltages are within
the pre-defined limits.
Summary of Contents for FL000090
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