| Impedance/Phase Angle vs. Frequency Tested under 1Vrms Oscillation Level | 
                 
                   
                    
                       
                         
                          | 125SR250 Impedance | 
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                          | 125SR250 Phase Angle | 
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                   Echo Sensitivity vs Frequency 
                    Tested under 20Vp-p, 40 bursts, 25cm, 20*20 cm Reflected Target | 
                  
                
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                  Echo Sensitivity / Ringing 
                    Tested under 20Vp-p, 40 bursts, 25cm, 124 KHz | 
                
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                  | Beam Angle: Tested under 125 KHz against a 200 x 200 mm (L x W ) flat target | 
                
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                  Sensitivity vs. Driving Burst Number 
                    Driving voltage 20Vp-p sine wave, Reflection target distance: 25cm @125KHz | 
                
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                  Bandwidth vs. Driving Burst Number 
                    Driving voltage 20Vp-p sine wave, Reflection target distance: 25cm | 
                
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