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Input Board Calibration
Manual Input Calibration
Thermo Fisher Scientific
The Input Board Calibration menu is used to initiate a calibration of the
input A/D stages. The input board calibration menu is visible only when
the instrument is in service mode. For more information on the service
mode, see
"Service
Mode" earlier in the chapter.
Note This adjustment should only be performed by an instrument service
technician.
▲
In the Main Menu, choose Service > Input Board Calibration.
●
INPUT BOARD CALIBRATION:
>MANUAL INPUT CAL
AUTOMATIC INPUT CAL
INPUT FREQUENCY DISP
RANGE
AVG
The Manual Input Calibration screen is used to do a manual calibration of
the input board A/D stages per the following procedure:
Note The measurement system and the PMT are both shut off inside this
screen.
▲
1. In the Main Menu, choose Service > Input Board Calibration >
Manual Input Calibration.
2. Press
to leave warning screen.
3. Make a note of the frequency at gain of 1.
4. Use
and
5. Use
and
the frequency at gain 100 is equal to the frequency at gain 1.
6. Press
to save new input board calibration.
DIAGS ALARM
to change the gain between 10 and 100.
to increment or decrement the D/A counts so
Model 42i Trace Level Instruction Manual
Operation
Service Menu
3-79
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Troubleshooting
