GE MEDICAL SYSTEMS 
D
IRECTION 2392751-100, REVISION 3VIVID™ 4 SERVICE MANUAL
7-56 Section 7-3 - Performing Front End (FE) Diagnostics
7-3-9-4 Expanded High Channels Diagnostic Tests
Tests the output signals from the input of the high channels. If one channel is missing, the output will 
be -6db. The input signals come from either a 3S or a 7S probe.
Figure 7-31 Expanded High Channels Diagnostic Tests