Fluke Data Acquisition System/Data Logging System 2680A - Manual (Page 55)

Getting Started
Managing Your Network Using Fluke DAQ
45
Alarm 1 or Alarm 2
Each channel has two alarms. You can set the alarms to Off, Low, or High. An
alarm condition occurs when a measurement falls below a low alarm value
(Low) or rises above a high alarm value (High). Fluke DAQ records all alarm
conditions in a data file.
Open Thermocouple Detection
Provides for notification if an open thermocouple is detected.
Factors (Mx+B)
Used to scale measurements. 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 or Scaled Range
Use the M and B values to calculate the Input and Scaled range or you can
enter the Input and Scaled range and Fluke DAQ will calculate the M and B
values for you.
Configuring a Computed Channel
Computed channels provide a means to calculate values based on measurements.
For example, if Channel 1 measures dc V and Channel 2 measures dc I, you could
use a computed channel to calculate instantaneous power (Channel 1 x Channel 2).
For a computed channel to execute, it must be associated with the scanning of a
module. You need to choose a module in the Scan with Module area for this
association. The default is module 1.
To configure a computed channel
1. Highlight the Computed Channels icon in the TreeView panel and click the
Insert button.
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