Dual channel, battery operated power supply for GRAS, Norsonic and other compatible preamplifiers with Lemo 1B 7-pin connectors.
- Overload indicators
- High pass filters
- Gain selectable between -20 dB, 0 dB, +20 dB and +40 dB in both channels.
- The polarization voltage = 0 V or 200 V.
- Frequency response = 4 Hz - 200 kHz or A-weighting.
- BNC outputs to analysers, DAT recorders etc.
- Mains unit available.
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Manufacturer's Specifications
Outdoor Microphone Systems
Ideal for use with GRAS 41AL Outdoor Microphone Systems when the sound level meter to be used does not have Lemo preamplifier inputs and / or polarization voltage supplies.
Sound Intensity
The GRAS 12AA also provides supplies and signal conditioning for the GRAS 50AI Sound Intensity Probe - requires a AA 0011 cable.
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| BSI approved for the hire of noise & vibration instruments |
