GE MEDICAL SYSTEMS PROPRIETARY TO GE
D
IRECTION 2294854-100, REVISION 3 LOGIQ™ 9 PROPRIETARY MANUAL
Chapter 7 Diagnostics/Troubleshooting 7-31
7-7-4-8System-Level Analog Diagnostics (cont’d)
• Loopback Diag: Tests the analog front end of the System.
This test utilizes the transmitter of one or more channels to generate a looped-back analog input
signal for the receiver of each channel. The entire system is required for this diagnostic. With this
setup (given a known-good digital signal path), analog front end component failures can be
isolated.
Figure 7-32 Example: Running Loopback Tests
Figure 7-33 Example: Loopback Test Failure
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