GE M
EDICAL
S
YSTEMS
D
IRECTION
FC091194, R
EVISION
02
V
IVID
7 / V
IVID
7 PRO S
ERVICE
M
ANUAL
Chapter 7 - Diagnostics/Troubleshooting
7 - 65
7-4-5
Beamformer Calibration (Front End Alignment)
Beamformer Calibrations are performed to calibrate each ADC channel of the two Beam Former (BF)
board inputs. The system calibrates the Beamformer ADCs to zero output when there is no signal on
the input.
These bias voltages are stored on hard disk in Backend Processor.
7-4-5-1
When to Use this Procedure
This procedure should be performed;
•
when installing a new Vivid 7 / Vivid 7 PRO
•
after software has been updated or replaced
•
when BF boards have been interchanged
•
when a BF board has been replaced
•
when the Backend Processor has been replaced
7-4-5-2
Front End Alignment Procedure
1.) Disconnect all connected probes.
2.) Turn on the scanner.
3.) Press
CONFIG
and log in as
adm
4.) Click SYSTEM
5.) Click DC OFFS. CAL to start the DC Offset calibration of the Beam Formers (Front End Alignment).
Figure 7-60 Calibration Dialog
Channel Control
DC Offs. Cal
Cal. Reset
Show graph
