MTS SWIFT 10 ATV Sensor - Manual (Page 48)

SWIFT 10 ATV Sensors 48
TI2SHUNT - Transducer Interface Shunt
Software Utilities
Setting Up Shunt Calibration Reference Values
The ti2shunt 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 ti2shunt utility, connect the Transducer cable 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 ti2shunt utility.
2. Using Option 2, enter the desired shunt tolerance.
3. Using Option 4, 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 5, 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 TI2Xfer option 2 to download the shunt parameters from a file to the
TI. Enter the filename used in Option 5 (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 4, command another shunt cal, and wait for it to complete.
This provides a verification, showing that the values downloaded are valid.
The Shunt indicators on the TI Front Panel should toggle indicating the shunt
calibration is in process.