At the mouth reference point (MRP), which is 25mm from the detachable lip ring (35mm from the mouth of the Type 44AB), the maximum continuous signal it can produce in 1/3-octave bands is 100dB re. 20µPa in the frequency range 100Hz to 16kHz. Its loudspeaker accepts an external signal directly via a BNC input.
Jigs are included for calibration according to CCITT P.51 and IEEE 269. These are for use with ¼" or ½" microphones. One jig holds the microphone at 0º incidence (¼" only) to the sound source, the other at 90º incidence (¼" or ½").
|Temperature range, operation||°C / °F||TBD|
|Humidity range non condensing||% RH||TBD|
|IEC standard||60318-1 & -2 (former 60318)|
|IEEE standard||269, 661|
|Maximum power, continuous||W||10|
|Maximum power, pulsed 2 sec.||W||50|
|Weight||g / oz||1000 / 35.274|