Sefram
CHAPITRE 3. GETTING STARTED
The Min and Max columns define the range measured by the channel. It has an impact on measurement
accuracy (see accuracy section for more details). The button
automatically centers zero between Min and Max
terminals (editable).
The
Measurement
column defines which measurements associated with the channel will be activated for vie-
wing and/or recording. Once validated, they appear in the left pane of the screen
(4)
. It is possible, for example, to
record both the direct voltage and the RMS value of the same channel signal.
By pressing
in the
configure
column, you open the complete page of channel parameters shown above.
By pressing directly on a measurement in the left pane
(4),
you can delete it, access the channel
parameters or access the recording frequency settings.
F
IGURE
3.6 : Page configuration
Field (1) corresponds to the channel name, and you can also add a full description in field
(2)
. In the same way
as above, define the physical quantity
(3)
you are going to measure, then the sensor used
(4).
To add a sensor
not present in the library, click on the "pencil" icon, and go to the sensor library section for more details. Define
the measurement range to be displayed, which will define the upper and lower limits for the on-screen graph, and
select the zero point.
ò
Please note that if the measured value is outside these limits, it will not be displayed on the screen.
Define the measurements to be displayed and/or recorded in frame
(6)
. Note that for the
frequency, counter and
PWM
measurement, you need to set a detection threshold. For the
derivative and integral
measurement, be sure
to define an integration period and amplitude
(7)
, which are essential for calculation. The
Average, Min and Max
measurements
(8)
plot the signal’s minimum and maximum average values over a defined time period. The drop-
down menu
(9)
lets you define a low-pass filter, which is ideal for attenuating/removing electronic noise induced
by external disturbances on your measurement. See "How to attenuate noise on my signal" for more details. Total
bandwidth depends on the type of filter used. To apply a cutoff frequency before 100Hz, use the keyboard to define
DAS
User manual
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