Input Frequency Display; Temperature Calibration - Thermo Scientific 42i Instruction Manual

Operation
Service Menu

Input Frequency Display

Temperature Calibration

3-82 Model 42i Instruction Manual
Note The measurement system and the PMT are both shut off inside this
screen.
In the Main Menu, choose Service > Input Board Calibration >
●
Automatic Input Cal.
Press
●
INPUT BOARD CALIBRATION:

TO CALIBRATE
XXXXXX** WARNING
xTHIS ACTION MAY
xxRECALIBRATION OF
ENTIRE MEASUREMENT SYSTEM!
RANGE AVG DIAGS ALARM
The Input Frequency Display screen is used to manually adjust the input
board gain. This may be used as a troubleshooting tool to ensure that the
input board is working properly. The gain setting and test mode are reset
upon exiting this screen. (That is, no changes are saved.)
In the Main Menu, choose Service > Input Board Calibration > Input
●
Frequency Disp.
Press
●
Use
●
Use
●
INPUT BOARD CALIBRATION:

TO CALIBRATE
XXXXXX** WARNING
CONCENTRATION
xx IS HALTED
THIS SCREEN!
RANGE AVG DIAGS ALARM
The Temperature Calibration screen allows the user to view and set the
ambient temperature sensor offset, which basically adjusts the temperature
sensor so that it reads correctly. The temperature calibration is visible only
when the instrument is in service mode. For more information on the
service mode, see
▲
to leave warning screen and begin automatic calibration.
**XXXXXXX
REQUIRExx
THEXXXX
to leave warning screen.
and to toggle the test signal (between ON and OFF).
and to change the gain between 1, 10 and 100.
**XXXXXXX
CALCULATIONx
INSIDEXX XX
XX
"Service Mode" earlier in the chapter.
INPUT BOARD CALIBRATION:
** IN PROGRESS **
D/A = 2047
TARGET =
FREQ =
ZERO =
RANGE AVG DIAGS ALARM
INPUT GAIN TEST:
GAIN = 1
TEST = OFF
FREQ = 5000
 CHG GAIN 
RANGE AVG DIAGS ALARM
0
0 0
0 CNT = 1
TEST MODE
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