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产品名称：非接触式激光测振仪 产品型号：AT500 AT7500
产品简介：
The AT Series Laser Doppler Vibrometer can measure the vibration of an object without contact, by means of the optical heterodyne method. By FM-demodulating the difference in frequency between reference and measured light, the AT Series can detect the speed and frequency of an object's vibration, rendering microvibration measurement possible.
The wide range of AT Series applications includes pickups for DVDs, CDs, and HDDs, vibration analysis of audio equipment, as well as applications relating to the auto industry, general plant equipment, and micromachines.
Specifications of AT500
| Item | AT500-05 | AT500-20 | |
| Laser Portion | |||
| Laser output | He-Ne gas laser (wavelength 632.8nm) | ||
| Configuration | 1mW or less | ||
| Measuring range of distance | 90mm to 600mm from lens surface*1 | ||
| Focus function | Manual/Auto*2 | ||
| Shutter function | Electromagnetic system (Interlock and remote control) | ||
| Demodulation portion | |||
| Velocity output | Frequency characteristics | DC to 50kHz*3 | DC to 200kHz*3 |
| Velocity range | 10-3m/s/V | 10-2m/s/V | |
| Integrating | Frequency band | 10Hz to 20kHz | - |
| Displacement range | 1μm/V | - | |
| Phase | Phase compensation range | - | DC to 200kHz*4 |
| Output phase delay | - | Within ±5 deg*5 | |
| Filter*6 | H.P.F. | DC,10Hz,100Hz | DC,10Hz,100Hz |
| L.P.F. | 1kHz,10kHz,50kHz | 5kHz,50kHz,200kHz | |
| General | |||
| Remote functions | Input: Auto Focus, Shutter, CAL | ||
| Additional demodulation functions*7 | Output for light input signal BNC terminal | ||
| Environment | 5 to 35°C,30 to 80%R.H. | ||
| Power source | AC adapter: AC100V to 240V/50 to 60Hz | ||
| Power consumption | Approx. 50VA (AC) | ||
| External size [WxDxH] (Approx.) | 113 * 329 * 142 mm (excluding protruding portions) | ||
| Weight (Approx.) | 4.5kg | ||
Remarks
*1: Beam diameter20μ m/90mm 100μ m/600mm
*2: Detection is limited
*3: Within |3dB
*4: Both H.P.F. and L.P.F. are OFF
*5: At 100kHz
*6: Attenuation factor: -24dB/OCT
*7: For other demodulation unit
Specifications of AT7500
| Item | AT7500 | |
| Scan range | 40mm x 40mm | |
| Number of measurement points | 10,000 points (Max) | |
| Measurement speed range | 20μm/s to 3m/s | |
| The number of input channels | 2ch | |
| Measurement function | Speed measurement, displacement measurement (optional), acceleration measurement (optional) | |
| Measurement | Velocity measurement | AT3600: DC to 200kHz |
| Displacement measurement | 0.5Hz to 200kHz (Option) | |
| Acceleration measurement | 2Hz to 200kHz (Option) | |
| Measurement data length | 25,600 data/point (max) | |
| Minimum beam diameter | Minimum 20μm | |
| Return position accuracy | Within +/- 5μm (at the position of minimum beam diameter) | |
| Sampling frequency | 500Hz to 10MHz (Enables to set by 1, 2, and 5 steps) | |
| A/D resolution | 12 bits | |
| Judge function | Level, frequency level | |
| Measurement speed | Max 30 points/sec. (It varies with depending on measurement conditions.) | |
| Rated power supply | AC100V AC at 50Hz/60Hz*1 | |
Remarks
*1: Estimation except for AC 100V
