Olympus EPOCH 1000 Series - Interface Gate; Option Activation; Figure 11-25 Active if Gate with if Gate Submenu

910-269-EN, Rev. B, June 2011
234 Chapter 11
11.5 Interface Gate
The EPOCH 1000 Series offers a third gate, the interface gate, as a software option.
This interface gate is principally used in immersion applications where the water path
distance between the front surface of the test material and the transducer face is
continuously changing. The application may involve an “on-line” type approach with
the test material moving steadily past a stationary transducer (or vice versa). If the
front surface of the test material is not uniform, a slight difference in the water path
distance may result. The interface gate option tracks the position of the reflection from
the interface of the water path and test piece and compensates for the variance in this
reflector’s position. The interface gate is also commonly used with captive water
column transducers.
11.5.1 Option Activation
When the interface gate option is activated, the 2/6 > IF Gate submenu becomes
available. The interface gate status, positioning and alarm conditions are controlled
via the same methods described in chapter
6 on page 109.
Figure 11-25 Active IF gate with IF Gate submenu
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