Selecting The Pulser Width (Optional) - GE Ultrasonic USM Go Operator's Manual

Chapter 2. Instrument Setup

2.4.6 Selecting the Pulser Width (OPTIONAL)

The standard pulser shape is a spike, and there is also an optional square pulser shape available. If the PULSER TYPE option is activated
and a SQUARE wave is chosen, the user may specify the time-based width of the pulser. The pulser width generally varies from
30 to 500 nanoseconds. The pulse width value is expressed as half of the bipolar square wave pulse width. A recommended starting point
from which the width setting can be adjusted is found with the following equation:
For example, if a 2 MHz probe is used, the equation becomes:
44
PULSE WIDTH (nanoseconds)
PULSE WIDTH (nanoseconds)
1000
 
----------- - with f in MHz
=
2f
1000
= ----------- - = 250

2 2
USM Go Operator's Manual