Figure 11-39 Incorrectly Triggered Measurement; Manual Gain Adjustment - Olympus EPOCH 650 User Manual

If this situation occurs, you can adjust the start position in time of the measurement
window by adjusting the start position of Gate 1.
To adjust the measurement window start position
 Press GATES and increase or decrease the gate 1 start position.
11.9.4.3

Manual Gain Adjustment

While Automatic Gain Compensation (AGC) is recommended when measuring in the
Corrosion Module, some applications may require manual adjustment of gain to
achieve optimal results. Often this requirement is related to transducer sensitivity. If
the transducer sensitivity is low, the default initial gain for the transducer may not be
sufficient to allow measurements in AGC mode. If the transducer is overly sensitive,
or the test material is highly transmissive, the default initial gain may be too high and
result in amplified noise or cross talk, causing incorrect measurements.
To manually adjust the gain parameter
1. Choose Corrosn Setup > AGC (group 3/4).

Figure 11-39 Incorrectly triggered measurement

DMTA-10055-01EN, Rev. A, February 2015
Software Features and Options 281