Precision Measurement Engineering, Inc.
Precision Measurement Engineering, Inc.
The Channel tab of the SCAMP Control Dialog allows users to set
SCAMP’s channel parameters. Users will not normally have to make changes on this tab
if PME supplies sensor calibrations, except in the case where a user must install a spare
sensor. The Channel tab is shown below.
Name
This is the name defined for the channel information displayed
elsewhere on this tab. Different channels can be selected from this drop-down box. The
user may not change channel names on this tab.
The user may change channel units by entering new units here. This
information will appear in *.TXT files and on Matlab plots but is informational only. It
is not used in any computations. PME strongly advises that Units not be changed since some
processing routines depend upon certain units for correct operation.
SCAMP has 32 channels numbered 0 to 31. This displays the channel
number.
ON channels appear in the data. OFF channels do not. This applies
only to the data stream. Channels operate electrically and consume power without regard to
their Status.
This is an informational string and is not used in processing. It
appears in *.TXT file outputs.
These boxes give the sensor position (in mm) relative to a datum on
the SCAMP. All sensors are measured relative to the same datum so sensor-sensor distances
can be computed without knowing the actual datum used.
SCAMP raw data are converted to engineering units by using the relation:
EU = C0 + C1 * CR + C2 * CR^2 + C3 * CR^3
Where EU is the engineering unit (deg C for a temperature
channel for example) and CR is the channel ratio observed. C0..C3 are supplied by PME for
sensors we calibrate. Users must supply their own C0..C3 if they perform calibrations.
These parameters show the scaling that SCAMP applies to channel outputs. Scaling is complex and modifications to these parameters should not be attempted by users.