Center frequency       kHz                     

40.0±1.0

Output sound pressure  dB@30cm/10V sine wave

≥100

   Receive sensitivity     dB / v / μbar

≥-74

   -6dB Directivity      deg.

Horizontal：60

Vertical：30

Ringing Time    ms

≤1.2

  Capacitance   pf   @ 120Hz  25℃

2000±10%

   Input voltage  Vp-p

≤140

   Operating Temperature      ℃

-40~+80

Signal specifications

75Ω-2

Signal length mm

2500±50