Operation
Instrument Controls Menu
3-62 Model 42i Low Source Instruction Manual Thermo Electron Corporation
User Value The User Value screen allows the user to set the output value for the
corresponding input voltage for the selected table point in the conversion
table from -9999999 to 99999999. The default table is a two-point table
with point 1: 0.00 V = 000.0 U and point 2: 10.00 V = 10.0 U.
• In the Main Menu, choose Instrument Controls > I/O Configuration >
Analog Input Config > Select Table Point > User Value.
• Use and to move the cursor up and down.
• Press to save the new value.
Temperature
Compensation
Temperature compensation provides compensation for any changes to the
instrument's output signal due to internal instrument temperature
variations. The effects of internal instrument temperature changes on the
analyzer's subsystems and output have been empirically determined. This
empirical data is used to compensate for any changes in temperature. This
compensation can be used for special applications, or when operating the
instrument outside the recommended temperature range, even though the
Model 42i Low Source does not require temperature compensation for EPA
equivalency.
When temperature compensation is on, the display shows the current
internal instrument temperature (measured by a thermistor on the Interface
board). When temperature compensation is off, the display shows the
factory standard temperature of 30 °C.
• In the Main Menu, choose Instrument Controls > Temperature
Compensation.
•Press to toggle and set the temperature compensation on or off.
TABLE POINT 01 USER VAL:
CURRENTLY: 0.00
SET TO: 00000.00
§¨
MOVE CURSOR
©ª
CHANGE VALUE
SAVE
RANGE AVG DIAGS ALARM
To Next Page