MTS SWIFT 10 ATV Sensor - Manual (Page 82)

SWIFT 10 ATV Sensors 82
Road and Track Vehicles
Installing the Transducer
Collecting Data
After you zero the TI, you are ready to collect data.
Note If you turn off power to the TI boxes, the zero values will remain valid, but
after power is restored, the wheels should be rotated at least one full
revolution so that the encoder can detect the index pulse to properly
convert the rotating coordinates to stationary coordinates. The
transducer outputs will not be correct until this happens.
1. Spin the wheels twice to ensure that each TI can identify the index pulse.
Spinning the wheels after you have completed the zero process will ensure
that each encoder is correctly referenced to the index pulse. Otherwise, the
data collected during the first revolution will be flawed.
2. Remove the vehicle from the lift or jacks.
3. Secure the connector that attaches the signal cable to the top of the slip ring
with high quality duct or electrical tape.
This will prevent dust, dirt, and water from entering the connector and
causing wear on the pins and sockets.
4. Perform a final inspection of the SWIFT sensor and the electronics to ensure
that everything is secure and that the TI boxes are on (see the note above).
After the zeroing procedure, the settings are stored in non-volatile memory
in each TI box and will be retained when power is cycled. However, if the
environment temperature changes significantly, or the anti-rotate is
modified, rezeroing is recommended.
Note Rezeroing the transducer is good practice when thermal changes occur.
Rezeroing the transducer at conditions and temperatures closest to the
test conditions will provide a more accurate zero and reduce thermal
errors.
5. Turn on the data recorder.
6. Start data collection.
Important Before beginning data collection, read the cautions on the next
page.