Fluke Biomedical 190M - Manual (Page 45)

Using the Scope and Meter
Making Automatic Meter Measurements (Model 190M-4)
1
35
Now the large reading is the actual input value minus the
stored reference value. The actual input value is displayed
below the large reading (ACTUAL: xxxx), see Figure 13.
Figure 13. Making a Relative Measurement
You can use this feature when, for example, you need to
monitor input activity (voltage, temperature) in relation to a
known good value.
Adjusting the reference value
To adjust the reference value, do the following:
5 F3
Display the Adjust Reference
menu.
6 F1 Select the applicable relative
measurement reading.
7 Select the digit you want to
adjust.
8 Adjust the digit. Repeat step 7
and step 8 until finished.
9
ENTER
Enter the new reference value.