GRAS 26AK-S1 1/2'' Preamplifier with Integrated Connector, Low Frequency
Freq range: 2.5 Hz to 200 kHz
Noise: 1.8 µV Gain: -0.25 dB
Special feature: Low frequency applications
Technology
Introduction
GRAS26AK-S1 is a preamplifier designed for general purpose in the laboratory and field and accommodates directly for all IEC 61094 standardized ½” externally polarized measurement microphones.
It is rugged and reliable and can handle microphone signals up to 50 Vpeak within 2 Hz to 200 kHz. The printed circuit board is made by use of thick-film substrate technology and optimized with respect to maximum suppression of microphonics and moisture rejection.
The high-quality, standard 7-pin LEMO male connector is integrated into the preamplifier and ensures that only one type of connector and cable is required for both connection and extension.
26AK-S1 is factory calibrated individually and delivered with a calibration chart stating its A-weighted and linear self-noise.
Compatibility
These preamplifiers are compatible with 1/2-inch microphones as defined in international standard IEC1094 Measurement Microphones, Part 4: Specifications for working standard microphones. The mounting thread (11.7 mm - 60 UNS-2) is compatible with other available makes of similar microphone preamplifiers.
GRAS 26AK-S1 is integrated with a 7-pin LEMO series 1B plug.
Specifications
Conditions: 23 °C Ambient temperature, ±60V/+120V power supply, 18 pF dummy microphone, 3 m output cable.
GRAS Sound & Vibration reserves the right to change specifications and accessories without notice.
Dimensions
Ordering info
Optional items
| GRAS AA0008 |
3 m LEMO 7-pin - LEMO 7-pin Cable |
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1/2" Microphone Holder, POM |
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1/2" Microphone Holder, Stainless Steel |
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Swivel head |
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Tripod |
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| GRAS RA0019 |
Adapter for 1/4" microphone and 1/2" preamplifier |
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Adapter for 1" microphone and 1/2" preamplifier |
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Right-angled (90º) Adapter for 1/2" Microphone and 1/2" Preamplifier |
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| GRAS RA0016 |
20 dB Attenuator for externally polarized 1/2" microphones |
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20 pF Preamplifier-input Adapter for 1/2" preamplifiers |
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2-Channel Power Module with gain, filters and SysCheck generator |
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2-Channel Universal Power Module with signal conditioning and PC interface |
GRAS Sound & Vibration reserves the right to change specifications and accessories without notice.
