Document No: DELTA SIGMA-USM
Version 4
Revision 3.94.2
Page: 22 / 32
2.9
IMPORTANT NOTES ON OPERATION OF THE DS SOFTWARE
2.9.1
Receiver is unable to AGC on signal – From the Bolt Info Screen
When the
MEASURE
Button is pushed and the receiver setting screen appears, then the
program returns to the main menu screen there is something wrong with the ultrasonic
connection. Check the Bolt Type File:
•
Make sure that the Approximate Length is correct
•
Check Cable connection
•
Check Bolt/Transducer contact and bolt end finish
2.9.2
Bolt length displayed is not within 2-4% of actual measured length:
Mode Conversion
This may be from a property common in long – slender bolts or studs with a solid shank or
stud section. The ultrasonic “beam” has a spread angle; this angle is a function of transducer
frequency and diameter. The Operational Discussion portion of the Measure Bolts section
covers how to move the scope window to re-trigger on the end echo packet that is always in
front of the mode conversion packet.
Materials Evaluation/44/April 1986, Glenn M.Light, Narayan R.Joshi, Soung-N.Liuc