MTS Material Test Systems - Manual (Page 67)

7.7.0 Set Up the Program, Detectors, Counter,
and Data Acquisition
Following is a brief procedure to set up the program command. Detailed information on computer-controlled
set up can be found in the Series 793 Overview manual.
Caution:
The load and displacement signals will cut off (clip) a program signal that exceeds 100% of the
full-scale operating range.
Clipping a program signal could invalidate the test results.
When adjusting the Span and Set Point controls, ensure that the combined span and set point
percent of full-scale values do not exceed 100% of the full-scale operating range for the test.
1. Select program source.
2. Adjust program scaling.
Use the Setpoint and Span controls to adjust the program scaling for the desired test results.
3. Start the program.
4. Check program scaling.
To check the program scaling, select the desired signal (typically command or transducer feedback) for
readout. Adjust the Span and/or Setpoint controls for the desired results.
5. Check error detectors.
Once the program has started, actual error level can be monitored and the detectors set to the desired
tolerance above the greatest peak DC error. When the detector is properly adjusted, the error detector
interlock can be enabled.
6. Check limit detectors.
Monitor the upper and lower peaks of the transducer output. If the existing upper and lower limit settings
are correct for the test, enable the detector interlock.
If it is necessary to change the upper or lower limit detector levels, disable the limit detector interlocks and
adjust the upper and lower limit detector values to the desired levels. When adjustments are correct,
enable the detector interlock.
7. If desired, check and enable the underpeak detector.
Monitor the underpeak detector input signal. If the existing underpeak settings are correct for the test,
enable the detector interlock.
If it is necessary to change the underpeak detector levels, disable the underpeak detector interlock and
adjust the underpeak detector values to the desired levels. When adjustments are correct, enable the
detector interlock.
8. Stop the program.
MTS Material Test System Operation 67
7.0 Operation