Table 1.
Transducer model RMV | 710B | 707B | 704 | 711 |
---|---|---|---|---|
Central frequency (MHz) | 25 | 30 | 40 | 55 |
Focal length (mm) | 15 | 12.7 | 6 | 6 |
Measured 3 dB band width (MHz) | 12–25 | 17–31 | 20–40 | 27–47 |
The central frequency and focal length measurements are defined by manufacturer’s literature. The 3 dB bandwidth was measured from the frequency spectrum.