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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:
In the ACQUIRE menu, activate the PULSER submenu using the joystick (
1.
2.
Use the joystick (
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.
USM Go Operator's Manual
) to select the function titled PRF MODE.
).
Chapter 2. Instrument Setup
41
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