GE
D
IRECTION
5573152-100, R
EV
. 2
LOGIQ E9 S
ERVICE
M
ANUAL
6 - 18
Section 6-4 - DC Offset Calibration
Section 6-4
DC Offset Calibration
6-4-1
Introduction
The DC offset calibration is performed to calibrate each ADC channel of the GRX inputs. The system
calibrates the ADC to zero output when there is no signal on the input. These bias voltages are stored
in the Back End Processor.
6-4-2
When to do a DC Offset Calibration
Do DC Offset Calibration:
•
when installing a new LOGIQ E9
•
after software has been updated or replaced
•
when DRX board(s) or a MRX board has been interchanged
•
when a DRX board(s) or a MRX board has been replaced
•
when the Back End Processor has been replaced
6-4-2-1
DC Calibration Procedure
1.) Disconnect all connected probes.
2.) Power on the LOGIQ E9.
3.) On the Touch Panel, select
Utility
->
Service
to access CSD.
4.) Log in, enter current password
5.) Select
Diagnostics
tab.
6.) Select
Service
->
Diagnostics
.
7.) Select the
“+”
before
Service Diagnostics
folder
to open the list of choices.
8.) Select
DC Offset Calibration
and then follow the on-screen instructions.
Summary of Contents for LOGIQ E9
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