MTS Series LX Laser Extensometer - Manual (Page 37)

Target Placement
LX Laser Extensometer Operation 37
Target Placement
Depending on the measurement mode selected, the laser extensometer measures
the distance between the front edges of targets T
1
and T
2
, or the distance between
the front edges of targets T
1
and T
2
, T
2
and T
3
, T
3
and T
4
successively during
each scan.
The target edges are labeled as follows:
• T
1
is the front edge of target 1
• T
2
is the front edge of target 2
• T
3
is the front edge of target 3
• T
4
is the front edge of target 4
In the T
2
- T
l
measurement mode, the targets T
1
and T
2
are positioned such that
the front edges are coincident with the gauge length. In the multisegment
measurement mode, the targets T
1
, T
2
, T
3
, and T
4
are arranged sequentially with
the front edges of T
1
and T
4
aligned with the gauge length.