GE DMS Go Operator's Manual page 80

Chapter 2. Instrument Setup
2.4.2b Setting the Ultrasonic Detection Mode (PROBE & CAL - TG MODE)
The DMS Go performs all measurements in zero-crossing mode, at the point where the signal crosses the zero amplitude line. The available
modes will vary with the probe used.
IMPORTANT: Not all modes are available for all probes!
In the MAIN menu, scroll to the PROBE & CAL submenu using the joystick (
1.
2. Use the joystick (
•
S-IP — This mode indicates that a single-element type transducer is connected to the DMS Go. It starts ultrasonic detection from an
artificial point relative to the pulser firing (IP, initial pulse, or "T0") and ends with the last zero crossing before the first detected
flank crossing in gate-A. The corresponding TOF is compensated by the probe zero offset (P-delay), calculated automatically
during the calibration process. The DMS Go calculates and displays a thickness result value from the acquired data. It is used with a
single-element probe to test thickness in non-coated materials, especially those with smooth, parallel surfaces.
•
S-PEAK — This mode indicates that a single-element type transducer is connected to the DMS Go. It starts ultrasonic detection from
the last zero crossing before the peak in gate A and ends with the last zero crossing before the peak echo in gate-B. The DMS Go
calculates and displays a thickness result value from the acquired data. It is used with a single-element probe to test thickness in
coated materials, especially those with smooth, parallel surfaces.
58
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) to select the function titled TG MODE, and then to select the mode. Six options are available:
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