MTS SWIFT 40 Sensor - Manual (Page 30)

SWIFT 40 Sensors 30
Calibration
Hardware Overview
When you press the Shunt button, the associated Shunt LED lights. As the TI
automatically switches through the series of bridges, it verifies that the outputs
are within the accepted tolerance range. If all bridge shunt values fall within the
tolerance range, the Shunt LED on the front panel will go off (after several
seconds). If any bridge fails to fall within the shunt tolerance range, the LED will
blink, indicating that the shunt calibration has failed. See the chapter,
“Troubleshooting”, for more information on dealing with shunt calibration
failures.
Example of Calibration File Shunt Data
The above example shows shunt data from the calibration file. This data may be
transferred, using the TIXFER program, from the transducer interface RAM to a
computer or from a computer to the transducer interface RAM. Note that items
marked ShuntDeltaMeas are uploaded from RAM, but not downloaded from the
computer. (For more information on TIXFER, see the chapter, “Software
Utilities.”
Checking the
calibration
You can check the calibration of a transducer at any time by pressing the Shunt
switch. Subsequent shunt commands compare the current feedback values
against those stored in the TI. You may set the tolerance values for each TI by
editing the calibration file (see the chapter, “Setting up the Transducer Interface”,
for instructions).
If the current feedback values from a shunt calibration are outside the tolerance,
the Shunt LED blinks to indicate a failure.
ShuntTolerance=2
FX1ShuntDeltaRef=-3.91836
FX2ShuntDeltaRef=-3.91896
FY1ShuntDeltaRef=-3.92366
FY2ShuntDeltaRef=-3.91639
FY3ShuntDeltaRef=-3.91824
FY4ShuntDeltaRef=-3.92494
FZ1ShuntDeltaRef=-3.92282
FZ2ShuntDeltaRef=-3.92673
FX1ShuntDeltaMeas=-3.91854
FX2ShuntDeltaMeas=-3.9192
FY1ShuntDeltaMeas=-3.92412
FY2ShuntDeltaMeas=-3.91572
FY3ShuntDeltaMeas=-3.91815
FY4ShuntDeltaMeas=-3.92464
FZ1ShuntDeltaMeas=-3.9227
FZ2ShuntDeltaMeas=-3.92646