PCB-HT378C20
| basic data | |||
| Nominal diameter of microphone | 1/2 " | ||
| application | diffuse-field | ||
| Sensitivity | 50 mV / PA | [2] | |
| sensitivity (±1. 5 dB) | -26 dB in relation to 1 V / PA | [2] | |
| frequency range (± 1 dB) | 6 … 6,300 Hz | ||
| (±2 dB) frequency range | 3.5 … 16,000 Hz | ||
| lower limiting frequency (-3 dB) | 1.0 … 2.75 Hz | ||
| Noise | < 32 dB in relation to 20 µPa | ||
| noise | < 17 dB(A) in relation to 20 µPa | ||
| Dynamic range | > 137 dB in relation to 20 µPa | ||
| TEDS Chip | integrated by default | [1] | |
| conditions of use | |||
| Temperature range (operation) | -40 … 257 ° F | -40 … 125 ° C | [3] |
| Temperature coefficient of sensitivity | 0,005 dB/°F | 0.009 dB / ° C | [2] [4] |
| Influence of static pressure | -0.01 dB/kPa | [2] [4] | |
| Humidity coefficient of sensitivity | ±0, 001 dB/% RH | [2] | |
| Influence by axial vibration | 63 dB in relation to 20 µPa | [4] | |
| technical characteristics | |||
| polarization voltage | 0 V | [5] | |
| Supply | 20 … 32 V DC | ||
| constant power supply | 2 … 10 mA | ||
| Bias voltage | 10 … 14 V DC | ||
| maximum output range | V ±7 PK | ||
| Output impedance | < 55 ? | ||
| physical properties | |||
| housing material | stainless steel alloy | ||
| Pressure | back | [6] | |
| electrical connection | BNC Jack | ||
| mounting thread(Amp) | 0,5 - 60 UNS | ||
| Size - diameter (with cap) | 0.52 in | 13.2 mm | |
| size - diameter (without protection cap) | 0.50 in | 12.7 mm | |
| size - height (with cap) | 3.88 in | 98.6 mm | |
| size - height (without protection cap) | 3.84 in | 97.5 mm | |
| mass | 1.74 oz | 49.2 grams | [4] |
| hints | |||
| [1] | TEDS memory in accordance with IEEE PP1451. 4 | ||
| [2] | based on 250 Hz | ||
| [3] | maximum 120 ° C at constant current > 4 mA | ||
| [4] | typically | ||
| [5] | Prepolarized | ||
| [6] | pressure compensation by the pre | ||
| [7] | Details: see PCBs Declaration of conformance PS064 | ||
| Equipment | |||
| ACS-42 | calibration of a microphone with pre-amplifier | -1 | |
| (TLD) TEDS memory in accordance with IEEE P1451. 4 | |||
| Accessories | |||
| ACS-63 | calibration microphone with pre-amplifier | -1 |
PCB-HT378C20
