Activating The B-Scan - Olympus EPOCH 650 User Manual

DMTA-10055-01EN, Rev. A, February 2015
A scanner equipped with an internal encoder mechanism can provide transducer
location information (distance traveled) in addition to the thickness reading. This
feature increases the functional value of the B-scan as relative location in the material
is directly correlated with a thickness measurement at that location. The maximum
scan rate is 30 Hz.
The B-scan has three separate operating modes:
• Bidirectional Encoded Mode
This mode requires the use of a bidirectional encoder that records location
information as data is collected in both forward and backward directions.
• Unidirectional Encoded Mode
This mode requires the use of a bidirectional or unidirectional encoder and
records location information as data is collected in either the forward or backward
direction as if data is collected in one direction only.
• Manual (Timed) Mode
This mode does not record location information and does not require the use of
an encoder. This mode provides a continuous scan of thickness data with no
correlation to its location along the scan. Readings are collected at a maximum of
30 Hz and are not related to transducer movement.
11.9.7.1

Activating the B-Scan

Before activating the B-scan, you should create and open an inspection file in the
instrument data logger. For instructions on creating and opening an inspection file,
see "Data Logger" on page 187.
To activate the B-scan
1. Navigate to the B-Scan menu item (group 3/4) shown in Figure 11-44 on page 287.
2. Choose B-Scan (P2 key).
3. In the B-Scan setup page set the value of each field (see Figure 11-45 on page 289).
4. Press to return to the live screen.
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