MTS 709 Alignment System - Manual (Page 90)

709 Alignment System
Get Specimen Offset Values
Specimen Offsets 90
4. Establish the bent back offset reading.
Because load train components cannot be perfectly machined, some initial
offsets are inherent. Establishing bent back values allows the 709 Alignment
System to take this into account during the alignment adjustments.
A. Select the Bent Back tab.
B. Install and clamp the specimen in the standard orientation; that is
install the specimen such that gauges G4, G8, and G12 are facing
toward the back on the load unit with G4 being the top gauge.
C. Click the Read button to take a reading.
D. Click the Add button to save the values.
E. Unclamp and clamp the lower grip.
F. Repeat steps C, D, and E until you have saved three sets of bent front
values.
G. Unclamp and clamp the upper grip.
H. Click the Read button to take a reading.
I. Click the Add button to save the values.
J. Repeat steps G, H, and I until you have saved three sets of bent back
values.