MTS SWIFT 30 Sensor - Manual (Page 54)

SWIFT 30 Sensors 54
TISHUNT - Transducer Interface Shunt
Software Utilities
Setting Up Shunt Calibration Reference Values
The tishunt utility provides all of the necessary functions for setting up a
Transducer Interface with valid Shunt Cal Reference values.
Note This procedure should only be performed by qualified service personnel.
Before running the tishunt utility, connect the Transducer cable and Shunt cables
from the SWIFT TI to the SWIFT Transducer Assembly. Power up the SWIFT TI
and wait for the red Fail indicator on the TI front panel to go out (this indicates
that the TI is ready).
Note that it is not necessary to perform a System (Transducer) Zero prior to the
Shunt Cal.
Procedure
1. Launch the tishunt utility.
2. Using Option 2, enter the desired shunt tolerance.
3. Using Option 5, command a shunt cal, and wait for it to complete. This
causes the TI to apply and measure each shunt delta. These measured values
will be written as the Cal Reference values. The Shunt indicator on the TI
front panel should not blink (blinking indicates that the shunt cal
verification failed).
4. Using Option 1, read the current shunt parameters. It is not necessary to
save these to a file. Review the measured values and verify that they are
correct.
5. Using Option 6, write the last shunt measurements to a parameter file. This
sets up a file that contains the eight Set Shunt Cal Reference commands,
with the last measured values as the values for the commands. This step
does not download the values, but forces the generation of a shunt cal
reference parameter file.
Write down the filename that is generated, as it will be required later.
6. Using Option 3, restore shunt parameters from a file. Enter the filename
used in Option 6 (Step 5). The tishunt utility then downloads the shunt cal
reference values to the TI. These values are written into non-volatile
memory within the TI, and are automatically restored whenever the TI is
powered up.
7. Using Option 5, command another shunt cal, and wait for it to complete.
This provides a verification, showing that the values downloaded are valid.
The Shunt indicator on the TI Front Panel should not blink (blinking indicates
that the shunt cal verification failed).