• Liquid crystal cell is produced with delicate work from forming polarity to injection of liquid crystal. Vibration during a production process affects on product quality. Though yield ratio greatly affects on production cost, you cannot know performance of product until you actually power it on at the time of final inspection in many cases. In this example, the VC-3200 detects and judges by monitoring vibration during production process. This application helps to prevent Failure product or its outflow as well as stable production in quality.
   
• The VC-3200 can be setup three kinds of frequency bands and make Pass/Fail judgment of each band based on rms, peak or power averaging calculated value (same for all bands). Also it has the comparator delay time setting function and auto operation function. The comparator delay time setting function removes the unwanted signal at the time of starting measurement and the auto operation function can control the timing of judgment by inputting control signal from external device such as PLC^*.
   
• Connecting the VC-3200 to a PC via RS-232C interface enables storing the measured data and so on.
   
• By connecting a pair of commercially sold headphones to the VC-3200, it is possible to make hearing check of vibrating sound. Moreover, it can be used instead of conventional stethoscopic probe. Output signals are provided for each band, enabling an observation for vibration phenomenon on each frequency band.

* PLC: Programmable Logic Controller