PCB-HT378B20
| basic data | |||
| Nominal diameter of microphone | 1/2 " | ||
| application | diffuse-field | ||
| Sensitivity in the open circuit | 50 mV / PA | [3] | |
| sensitivity in the open circuit (±1. 5 dB) | -26 dB in relation to 1 V / PA | [3] | |
| Frequency range (± 1 dB) | 6 … 6,300 Hz | ||
| (±2 dB) frequency range | 3.5 … 12,500 Hz | ||
| lower limiting frequency (-3 dB) | 1.0 … 2.75 Hz | ||
| Noise (linear) | < 32 dB in relation to 20 µPa | ||
| noise | < 17 dB(A) in relation to 20 µPa | ||
| Dynamic range (for THD ≤ 3%) | > 137 dB in relation to 20 µPa | ||
| dynamic range (maximum without clipping) | 140 dB in relation to 20 µPa | [1 ] [2] | |
| TEDS Chip | integrated by default | [4] | |
| conditions | |||
| temperatureh (operating) | -40 … 248 ° F | -40 … 120 ° C | |
| Temperature coefficient of sensitivity (-10 … 70 ° C) | 0,004 dB/°F | 0.009 dB / ° C | [1] [3] |
| Influence of static pressure | 0.013 dB/kPa | [1] | |
| influence by humidity (0 … 100%, non-condensing) | -0.01 … 0.01 dB/% RH | [3] | |
| influence by axial vibration (0.1 g, 1 m/s²) | 66 dB in relation to 20 µPa | [1] | |
| technical characteristics | |||
| polarization voltage | 0 V | [5] | |
| supply | 20 … 32 V DC | ||
| constant power supply | 2 … 20 mA | ||
| Bias voltage | 10 … 14 V DC | ||
| output impedance | < 55 Ω | ||
| Maximum output range | ±7 V pk | ||
| physical properties | |||
| Housing material | stainless alloy | ||
| pressure | back | [6] | |
| electrical connection | BNC-Plug | ||
| Mounting thread (cap) | 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 | [1] |
| notes | |||
| [1] | typically | ||
| [2] | peak | ||
| [3] | based on 250 Hz | ||
| [4] | TEDS memory in accordance with IEEE PP1451. 4 | ||
| [5] | Prepolarized | ||
| [6] | pressure compensation by the pre | ||
| [7] | details: see PCBs Declaration of conformance PS065 | ||
| Accessories | |||
| ACS-42 | Calibration of a microphone with pre-amplifier | -1 | |
| (TLD) TEDS memory in accordance with IEEE P1451. 4 | |||
| Accessories | |||
| ACS-63 | calibration of a microphone with Vorverstä stronger | -1 |
PCB-HT378B20
