GE Ultrasonic USM Go, Руководство оператора

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Chapter 2. Instrument Setup
USM Go Operator’s Manual 41
2.4.3 Adjusting the Pulser Repetition Frequency (PRF)
The Pulser fires at a frequency which can be set either automatically or manually . To set the PRF mode and frequency level:
1. In the
ACQUIRE
menu, activate the
PULSER
submenu using the joystick ( ).
2. Use the joystick ( ) to select the function titled PRF MODE .
3. Press the function toggle to see the three available options:
•
AUTO HIGH
- The instrument calculates and sets the pulser firing rate at 75% of the maximum frequency possible, based on the
range and the material velocity.
•
AUTO MED
- The instrument calculates and sets the pulser firing rate at 50% of the maximum frequency possible, based on the range
and the material velocity.
•
AUTO LOW
- The instrument calculates and sets the pulser firing rate at 20% of the maximum frequency possible, based on the range
and the material velocity.
•
MANUAL
- Allows the user to set the pulser frequency. However, unacceptable PRF settings will cause a display prompt to appear.
Note:
The MANUAL option is available only if the CUSTOM PRF option is enabled.