Olympus Sonic 1200S/HR, Руководство пользователя

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Control Descriptions 45
DELAY Adjusts the time base delay from -1.16 to 185 inches in steel. Adjustment step size
varies from 0.001 to 1 unit. Refer to the VEL description for further Delay limits.
VEL Selects the material sound propagation velocity. The adjustment range is 0.0250 in/µs to
0.6000 in/µs. The allowable minimum and maximum values for range and delay are based on
the velocity setting.
If the instrument limits the adjustment for range, delay, gate position, or
gate width, it may be due to the current velocity setting .
MAX REP Adjusts the frequency of the square wave pulse applied to the transducer crystal.
The maximum rate is limited by the Range, Pulse Voltage, and Pulse Width settings.
Decreasing MAX REP may reduce the noise on the display.
4.14 Gate 1 Menu
The GATE 1 key calls up the gate 1 menu shown and is used to adjust the gate 1 parameters.
This menu sets up parameters such as polarity, position, width, and level for flaw gate 1. Gate
1 may also be used for thickness measurement by enabling the T-GAUGE control.
GAIN See GAIN parameter description in the Receiver menu section
GATE 1 Selections are “+”, “-”, and “OFF”; “+” signals a gate alarm when the signal
amplitude is above the threshold level, and “-” signals an alarm when the flaw amplitude is
below the threshold level. “OFF” turns off the flaw gate. If a gate is in the alarm state when the
thickness gauge is OFF, the amplitude is displayed under the associated gate bar in inverse
video.
POSN Adjusts the gate 1 start position from -1.160 to 185.0 inches in steel. The position is
displayed as the distance from IP in the selected units. Adjustment step size varies from 0.001
to 1 unit.
Refer to the VEL description for further Gate Position limits.
WIDTH Adjusts the width of gate 1 from 0.001 to 296.0 inches in steel. Adjustment step size
is 0.001 to 1 unit. Refer to the VEL description for further Gate Width limits.
LEVEL Sets the gate 1 threshold value in terms of % of full screen height (FSH) for the alarm.
Adjustable from 5% to 100% of FSH in 1% increments.
GATE 1