Fluke 2680A User Manual page 123

Unit Label
Used to identify the unit of measurement (for example VDC, Ohms, Hz, °C
or °F).
Function
Selects the type of measurement being performed.
Range
Amplitude range for the measurement. Use auto when you are unsure of the
range.
Alarm Type
Use Normal alarm type to generate an alarm if the measurement goes above or
below the Alarm 1 or Alarm 2 level. Use Band alarm type to alarm if the
signal falls between two levels.
The NetDAQ 2640A and 2645A instruments do not have the Band
alarm type.
Alarm 1 or Alarm 2
Each channel has two alarms. You can set the alarms to Off, Low, or High. A
Normal alarm condition occurs when a measurement falls below a low alarm
value (Low) or rises above a high alarm value (High). A Band alarm type
generates an alarm when the measurement value is between the two alarm
limit values. Fluke DAQ records all alarm conditions in an alarm database.
Each of the two Alarm limits (one for the Band type alarm) has a Digital
Output button to select Digital or relay outputs that go active when an alarm is
generated from the alarm limit. Use Channel Alarm Trigger Select if channel
reading will be used to provide alarm trigger.
Open Thermocouple Detection
Provides for notification if an open thermocouple is detected.
Factors (Mx+B)
Used to scale measurements with a slope-intercept linear equation. Mx + B
scaling multiplies a measurement by a multiplier (M) and then applies an
offset (B). For example, Mx+B scaling of 100x+50 applied to a measured
value of 1.15 would result in a reading of 100(1.15)+50=165.
Input and Scaled Range
You can enter the Input and Scaled ranges and click the Calculate M and B
from Ranges button to have and Fluke DAQ calculate the M and B values.
Using Fluke DAQ Software
Managing Your Network Using Fluke DAQ
Note
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