AWA6063B electret tester (digital display)

Main technical indicators:

1. Test frequency: 70 Hz, 1 kHz, and 5 kHz. Each frequency can be set arbitrarily between 20 Hz and 8 kHz (step 10 Hz); Frequency accuracy ± 1%
2. Sensitivity measurement range: - 70 dB ~ - 20 dB (with 1 V / PA as reference); Resolution 0.1 dB
3. Test accuracy: ± 0.5 dB
4. Working current measurement range: 0 μ A～500 μ A. Three-digit digital display, resolution 1 μ A
5. The working voltage of the microphone under test: 1.0V ~ 6.0V, which can be adjusted in steps of 0.1V, and the voltage accuracy is ± 3%;
6. Load resistance: 680 Ω, 1 K Ω, 1.5 K Ω, 2 K Ω, 2.2 K Ω, 3 K Ω, accuracy ± 1%
7. Display: 128 × 128 dot matrix LCD digital display;
8. Sound source: metal diaphragm loudspeaker, power: 0.5 w
9. Sound pressure of sound source: 94 dB (0 dB = 2 × 10-5 PA), and each frequency can be adjusted separately within the range of 94 DB ± 10 dB
10. Harmonic distortion of sound source: < 2%
11. Startup measurement mode: automatic startup when the working current exceeds the limit or interface level control startup
12. Start measurement delay: 0s ~ 10.0s, adjustable in steps of 0.1s
13. Measurement time: continuous, 0.1s ~ 10.0s, adjustable in steps of 0.1s
14. Output: RS232C serial port outputs measured and set data values
15. Alarm indication: current overrun and frequency response overrun indicator light prompt
16. Power supply: 220 V ± 10%, 50 Hz / 60 Hz AC mains power, power consumption < 10 W.
17. Overall dimension: host (H) × W × D， mm)：144 × four hundred and twenty × 300, sound source: F60 × 36 mm
18. Weight: about 5 kg.
19. Operating temperature range: 0 ℃ ~ 40