Fluke Biomedical 945A - Manual (Page 36)

To display a setpoint, rotate the FUNCTION switch to one of the positions shown in Table 4-2 and press
the ENTER button. The setpoint will be displayed in exponential format with the leftmost digit flashing.
Pressing the ENTER button enters whatever is displayed into the non-volatile set point memory.
To change a setpoint, the DIGIT button is pressed and released until the digit to be changed is flashing.
Then the VALUE button is pressed and released until the desired value appears. This process is
repeated for all digits to be changed. The sign of the exponent can assume the values "E" or "-". The
former represents a positive power of 10 and the latter represents a negative power of 10.
When all digits and the exponent have been changed to their desired values, the ENTER button is
pushed to enter the new value into memory. Setpoint entries not accepted by the UDR are indicated by
the error code E0002 being displayed.
Table 4-2. Setpoints
Function Switch
Position
Description Default Values Units
0 HIGH Alarm Limit 1.00E5 mR/h
1 WARN Alarm Limit 1.00E3 mR/h
2 Overrange Limit 1.00E7 mR/h
3 Underrange Limit 1.00E-1 mR/h
4 Analog Full Scale 1.00E7 mR/h
5 Calibration Factor 1.00E2 percent
7 Analog Low Scale 1.00E-1 mR/h
Setpoint Descriptions
HIGH Alarm Limit
If the display dose rate is above the HIGH alarm limit, then the HIGH alarm is tripped. The HIGH alarm
limit must be greater than or equal to the WARN alarm and the underrange limit. It must be less than or
equal to the overrange limit.
WARN Alarm Limit
If the display dose rate is above the WARN alarm limit, then the WARN alarm is tripped. The WARN
alarm limit must be greater than or equal to the low scale value and less than or equal to the HIGH alarm
limit.
Overrange Limit
If the displayed dose rate goes above the overrange limit, the RANGE alarm is tripped. The overrange
limit must be greater than or equal to the HIGH, WARN, and Underrange setpoints.
4-12