TYPE 2669-L
½-inch microphone preamplifier, tapered, incl. cable, 7-pin LEMO connector
This ½" microphone preamplifier operates over a wide range of temperature, humidity and other environmental conditions.
問い合わせ・見積依頼This ½" microphone preamplifier operates over a wide range of temperature, humidity and other environmental conditions.
USE SCENARIOS
- Sound measurements with Brüel & Kjær 1/2" (1", 1/4" and 1/8" with adaptor) and compatible microphones
- General-purpose preamplifier and high-impedance input probe for Brüel & Kjær measuring instruments
FEATURES
- The preamplifier, cable and its connectors all fulfil electromagnetic compatibility (EMC) requirements
- Compact LEMO connector at preamplifier. Connector: lemo 0B 7 pin & lemo 0B to lemo 1B
- Patented charge-injection calibration technique for on-site calibration of the whole measuring channel including the microphone
- Wide dynamic range
- Very low inherent noise, high input impedance
- Low output impedance and high output current allows use with long extension cables
- Wide working temperature range
The preamplifier has a very high input impedance presenting virtually no load to the microphone. The high output voltage together with an extremely low inherent noise level gives a wide dynamic range. The preamplifier’s low output impedance allows the use of long extension cables without problems. You can connect ½" microphones directly and 1", ¼" and 1/8" types using adaptors.
You can verify the condition of the microphone, preamplifier and cable on-site using its patented charge injection calibration technique.- Diameter
- 1/2
- Optimised for
- Acoustical
- Connector at preamplifier
- LEMO 0B, 7-pin
- Connector at instrument/cable
- LEMO 1B, 7-pin
- Calibration facility
- Charge Injection Calibration
- Polarization voltage support
- Yes
- Supply voltage
- ± 14 to ± 60
- Max output voltage (peak)
- 55
- Max output current (peak)
- 20
- Frequency range
- 3 to 200000
- Attenuation
- < 0.35
- Noise A-weighted, typical
- 1.9
- Noise 22,4 Hz to 300 kHz, typical
- 8.2
- Input impedance
- 15||0.3
- TEDS UTID
- 1025 from serial number 2221155
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