Typical applications and use
- Production-line testing of drivers, receivers, and microspeakers
- Measurements in confined spaces
The 40PK is very short and can therefore be used in confined spaces where its bigger equivalent, the 40PP cannot be used. Close manufacturing tolerances provide the 40PK with a high degree of interchangeability – a major advantage when used in production-line test setups.
The standard SMB connector of the 40PK ensures an easy-to-handle setup and supports the use of standard RG174 cable all the way from the microphone to the input module.
The integrated CCP (Constant Current Power) preamplifier requires a constant-current power supply, such as the G.R.A.S. 12AL 1-Channel CCP Power Module with A-Weighting filter, or any other CCP compatible power supply or input module. The built-in TEDS (Transducer Electronid Data Sheet, according to IEEE 1451.4) chip provides information about the microphone that can be used by systems designed for use with TEDS.
To fully benefit from its short length, the cable with an angled SMB connector should be choosen (see the tab Ordering info).
The functionality of TEDS is very useful for determining what microphone is connected to your respective input channels. However, it is not a check of whether the microphone is within specifications or not. For daily verification and check of your measurement setup we therefore recommend using a sound source like the G.R.A.S. 42AB Sound Level Calibrator.
For proper sensitivity calibration we recommend using a reference sound source like the G.R.A.S. 42AP Intelligent Pistonphone.
|Frequency range (±2 dB)||Hz||10 to 20 k|
|Dynamic range lower limit with G.R.A.S. preamplifier||dB(A)||< 25|
|Dynamic range upper limit||dB||143|
|Set sensitivity @ 250 Hz (±2 dB)||mV/Pa||18|
|Power supply (Constant Current Power)||mA||2 to 20|
|Output impedance||Ω||< 50|
|Temperature range, operation||°C / °F||–10 to 50 / 14 to 122|
|Influence of axial vibration @1 m/s²||dB re 20 µPa||50|
|TEDS UTID (IEEE 1451.4 )||27 v. 1.0|
|CE/RoHS compliant/WEEE registered||Yes/Yes/Yes|
|Weight||g / oz||3.5 / 0.12346|
Typical frequency response
|G.R.A.S. AA0082-CL||Microphone Cable, SMB-BNC connector|
|G.R.A.S. 12AL||1-Channel CCP Power Module with A-weighting filter|
|G.R.A.S. RA0096||Adjustable, high-quality, stainless-steel tripod adapters|
|G.R.A.S. AM0364||Windscreen for Array Microphones|
|G.R.A.S. 42AP||Intelligent Pistonphone, Class 0|
|G.R.A.S. 42AB||Sound Calibrator, Class 1|