Weak Vibration Measurement Apparatus
The VM99-2 Double Grating Weak Vibration Measurement Apparatus is made for mechanics experiments. It analyzes tuning fork vibration and measures weak amplitudes or displacements. It also supports optical beat research. Students can draw the resonance curve of a tuning fork driven by an external force. This apparatus studies mechanical problems with optical methods. It gives a strong combination of mechanics, optics, and electronics. The unit comes in an all-in-one box structure. This makes it easy to carry, maintain, and manage.
Description
The VM99-2 Double Grating Weak Vibration Measurement Apparatus is made for mechanics experiments. It analyzes tuning fork vibration and measures weak amplitudes or displacements. It also supports optical beat research. Students can draw the resonance curve of a tuning fork driven by an external force. This apparatus studies mechanical problems with optical methods. It gives a strong combination of mechanics, optics, and electronics. The unit comes in an all-in-one box structure. This makes it easy to carry, maintain, and manage. Two gratings are included. The laser is a semiconductor type with a wavelength of 650nm. Its power is adjustable from 0 to 3mW and has two-dimensional adjustment. The VM99-2 Double Gratingproduct integrates a signal generator and a frequency meter into one unit.
Precise Measurements and Real-Time Recording
The built-in signal generator has a frequency range of 100Hz to 1000Hz. It uses a 3.5-digit digital display. The adjustment precision is 0.1Hz. Output power is 0 to 500mW. The integrated frequency meter covers 1Hz to 999.9Hz with 0.1Hz resolution and a 3.5-digit display. The tuning fork resonance frequency is 510Hz ±10Hz. Measurement accuracy is 5μm. Resolution reaches 1μm. This VM99-2 Double Grating Weak Vibration Measurement Apparatus allows you to change the tuning fork mass and its position. You can record how the resonance curve changes under different mass and distance settings in real time. A measurement port for an oscilloscope is provided. It lets you measure the driving power and study how the resonance curve changes when output power varies. The apparatus includes a built-in headphone and test components.
Expandable and User-Friendly Design
Three Q9 interfaces are available. There is also one two-channel headphone jack. The apparatus can demonstrate the Doppler effect with an optional Doppler effect accessory kit. The design is very suitable for physics labs in colleges and universities. The VM99-2 Double Grating Weak Vibration Measurement Apparatus gives students hands-on experience in combining optical and electronic methods for mechanical measurements. It helps to build a deep understanding of resonance, vibration analysis, and optical beating.
Specifications Table
| Parameter | Value |
| Number of gratings | 2 |
| Laser type | Semiconductor laser |
| Laser wavelength | 650nm |
| Laser power range | 0 – 3mW adjustable |
| Laser adjustment | Two-dimensional |
| Signal generator frequency range | 100Hz – 1000Hz |
| Frequency display | 3.5-digit |
| Frequency adjustment precision | 0.1Hz |
| Output power | 0 – 500mW |
| Frequency meter range | 1Hz – 999.9Hz |
| Frequency meter resolution | 0.1Hz |
| Frequency meter display | 3.5-digit |
| Tuning fork resonance frequency | 510Hz ±10Hz |
| Measurement accuracy | 5μm |
| Resolution | 1μm |
| Q9 interfaces | 3 |
| Headphone jack | 1 (two-channel) |
| Doppler effect demonstration | Optional accessory |
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