Envelope Mode - Olympus EPOCH 650 User Manual

DMTA-10055-01EN, Rev. A, February 2015
11.5.2

Envelope Mode

The simplest method for inspection of crack depth is using API 5UE in Envelope
Mode. This method allows the operator to collect all pertinent data with the press of a
single key and size potential defects in the most efficient manner.
11.5.2.1 Envelope Mode Calibration
Calibrating for API 5UE inspection in Envelope mode requires the activation of the
Peak Memory function.
To calibrate in Envelope mode
1. Press PEAK MEM to activate the Peak Memory function.
The letter P appears to the right of the live A-Scan display (see Figure 11-23 on
page 259).
2. Find the reflection from the calibration notch and press 2
bring this indication to 80 % FSH.
3. Adjust gate 1 so that it surrounds the indication.
4. Move the transducer forward and backward over the notch to draw a peak
envelope of the echo dynamics of the notch.
5. Press Collect (P1 key) to collect the A
Figure 11-23 on page 259).
6. Press P5 to move from calibration mode to Inspect mode.
258 Chapter 11
ND
, T , and T data from the envelope (see
max 1 2
F, (AUTO XX%) to