Delta RMC101 - Manual (Page 87)

Basic Topics 3.4
Using RMCWin 3-37
7. Under First position, click Use Current, which copies the COUNTS on this axis being calibrated
to the Counts box under First position. You can also manually type a value in this box, but it is
easiest to use the Use Current button.
8. Move the axis to the second point. You may want to move the Scale/Offset Calibration dialog
box out of the way so that you can use the main RMCWin window.
9. Measure the physical distance to the second point on the axis in the position units that you intend
to use.
10. Under Second position, in the Actual position box, type the distance measured to the second
point in position units.
11. Under Second position, click Use Current.
12. Under Extend/Retract Limits, choose how you wish to have the limits set:
• If you had the extend and retract limits set correctly, click Use current limits, adjusted for
new Scale and Offset to adjust the limits for your new Scale and Offset.
• If the points you used for the two positions are your limits, click Set limits to above
positions .
• Otherwise, click Set limits to the following values and type the limits in the text boxes.
13. Click Apply, which sets the Scale, Offset, the Prescale Divisor bits of the Configuration word,
Extend Limit, and Retract Limit.
14. Click Done.
15. Issue a 'P' command for the axis to have the new parameters take affect.
3.4.20.3 MDT Scale/Offset Calibration Utility
For a description of all Scale/Offset Calibration Utilities, see Using the Scale/Offset Calibration
Utilities. To use the MDT Scale/Offset Calibration Utility:
1. Gather the following pieces of information for an axis:
• The gradient of the transducer and its units (e.g. 9.012µs/inch)
• The number of recirculations for the transducer
• The desired number of position units per inch or centimeter
• The transducer counts at your desired zero position
• Whether you wish to have your position units increase or decrease with increasing counts
2. Place the cursor in a field under the axis you wish to calibrate.
3. On the Tools menu, click MDT Scale/Offset Calibration.
4. Enter the above pieces of information.
5. Under Extend/Retract Limits, choose how you wish to have the limits set: