Preamplifier Type 2669-C is designed to operate over a wide range of temperature, humidity and other environmental conditions.
- 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
- Full electromagnetic compatibility (EMC)
- Compact LEMO connector at preamplifier. Connector: LEMO 1B 7 pin.
- 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, cable and its connectors all fulfil EMC requirements. You can verify the condition of the microphone, preamplifier and cable on-site using its patented charge injection calibration technique.
The low output impedance and high output current capability means that you can use long cables between the preamplifier and your measuring instrument without loss of signal quality.
- Optimised for
- Connector at preamplifier
- LEMO 1B, 7-pin
- Calibration facility
- Charge Injection Calibration
- Polarization voltage support
- Supply voltage
- ± 14 to ± 60
- Max output voltage (peak)
- Max output current (peak)
- Frequency range
- 3 to 200000
- < 0.35
- Noise A-weighted, typical
- Noise 22,4 Hz to 300 kHz, typical
- Input impedance
- TEDS UTID
- 1025 from serial number 2221155