Measurement Microphone Preamplifier for Application-Focused Engineering
A measurement microphone capsule produces a high-impedance signal that should not be routed directly over a long cable. This preamplifier buffers that signal and presents a lower output impedance to the acquisition system. Therefore, it forms a critical part of the measurement chain and must be selected by capsule size, threaded coupling, connector, IEPE supply and available installation space.
Key Features and Benefits
- 1 Hz to 200 kHz (±0.2 dB) frequency response.
- BNC output connector.
- Compact 80 mm × 12.7 mm mechanical envelope.
- A-weighted noise <2.6 µV rms.
- IEPE constant-current power supply.
- Output impedance below 50 Ω.
- Total harmonic distortion below 0.1%.
- IEEE 1451.4 TEDS support where stated by the manufacturer.
Technical Specifications
| Specification | CRYSOUND CRY3501 |
| Compatible microphone format | 1/2-inch CRY3000 series |
| Frequency response | 1 Hz to 200 kHz (±0.2 dB) |
| Output impedance | <50 Ω |
| Total harmonic distortion | <0.1% |
| Power supply | IEPE, 2 mA to 20 mA |
| Nominal operating current | 4 mA |
| A-weighted noise | <2.6 µV rms |
| DC bias voltage | 12 V ±2 V |
| Connector | BNC |
| Operating temperature | -40°C to +80°C |
| Threaded coupling | 11.7-60 UNS |
| Dimensions | 80 mm × 12.7 mm |
Applications
- Laboratory acoustic measurement systems
- Product-noise and electroacoustic testing
- Microphone arrays and multi-channel acquisition
- Anechoic-room measurement
- Field measurement with extended cables
Integration and Configuration Considerations
Confirm that the selected measurement microphone uses the correct diameter and thread and that the data-acquisition system provides a compatible IEPE supply. The BNC connector determines the required cable. In addition, check TEDS support across the preamplifier, cable and acquisition channel if automatic sensor identification is required.
Selecting the Measurement Chain
Accurate acoustic measurement depends on the complete signal chain. Therefore, confirm the microphone field type, sensitivity, dynamic range, preamplifier, connector, cable, constant-current supply, data-acquisition input and calibration method as one system. Metromatics can help review these interfaces before quotation.
Why Source the CRY3501 Through Metromatics?
Metromatics can help Australian and New Zealand customers compare the CRY3501 with other CRYSOUND measurement options and review the intended sound field, level range, bandwidth, connector and acquisition requirements before quotation.
Contact Metromatics to discuss your application, confirm the correct CRY3501 configuration, obtain additional technical information or request pricing and a quotation.
