頻閃儀是指控制光源發光，以特定頻率快速閃動的光學測量儀器。美國Checkline QB-LED頻閃儀本身可以發出短暫又頻密的閃光,當調節頻閃燈的閃動頻率,使其與被測物的轉動或運動速度接近或同步時,被測物雖然高速運動著,但看上去卻是緩慢運動或相對靜止,這種視覺暫留現象使人目測就能輕易觀測到高速運動物體的表面質量與運行狀況 ,而頻閃儀的閃光速度即為被檢測物體(例如:馬達 )轉速和運動頻率 (印刷袋 ) ,亦可以利用頻閃儀分析物體振動情況、 高速移動物體的動作以及高速攝影等。利用頻閃儀觀測檢驗技術在歐美已廣泛使用 ,隨著我國經濟的高速發展,越來越多的行業開始使用頻閃儀來幫助解決產品質量檢驗問題。

Check-Line QB-LED頻閃儀也叫頻閃靜像儀或轉速計 ,是能夠使作振動、 高速旋轉或周期運動構件變成“ 靜止不動 " 構件的一種光學測量裝置。

Flash range of 30 - 300,000 fpm (0.5-5000 Hz)

閃光范圍：30-300000FPM（0.5-500Hz）

The Check-Line QB-LED is a hand-held, battery-powered stroboscope featuring forty (40) extremely bright LEDs for the highest light output in its class. Designed for machinery observation, visual inspection and motion analysis, its robust design is suitable for use in the toughest industrial environments.

美國Checkline的QB-LED手持式頻閃儀集成了40顆高亮度輸出的LED燈，在同級別中性能優異。QB-LED是靠電池供電，為機械觀測，肉眼檢測和運動分析而設計，外殼堅硬，適應于苛刻的工業使用環境。

The QB-LED features a robust aluminum housing fitted with forty long-life, high performance LEDs providing a peak brightness of 5000 Lux and convenient adjustment of flash duration to easily select the optimal balance of brightness and image sharpness. A built-in Lithium Ion battery provides up to seven hours of continuous use on a single charge. It is supplied with a universal battery charger (100-240VAC) with USA, Euro and UK plug adapters.

QB-LED的外殼材質為鋁，裝載著40顆壽命長，性能好的LED燈，其亮度達5000 Lux，并且方便對持續閃光時間進行調整，輕松選擇平衡亮度和圖像清晰度。內置的鋰離子電池，充電一次可不間斷使用7小時，還提供通用充電器（100-240VAC），有美標，歐標和英標可供選擇。

The strobe is extremely easy-to-use, as functions such as flash rate and brightness adjustments are separated from the special functions that are found a separate menu. The special functions include phase shift, internal/external trigger selection, flash delay, divider and "Slow Motion" mode. "Slow Motion" Mode allows the user to offset the flash rate to put the "frozen" image into virtual "slow-motion".

QB-LED頻閃儀操作非常簡單，用戶可以在菜單上尋找特殊鍵，直接閃光頻率和亮度進行調整。這些特殊按鍵分別控制相移，內外觸發器選擇，閃光延遲，分配器和慢動作模式。

The QB-LED uses the "strobe effect" whereby when the flash rate is equal to the rotational speed, the target will appear "frozen". Typical applications include: motion and vibration analysis, balancing of rotating shafts, fans, cams, high speed motion analysis of speakers or ink-jet printing and more. Ideal for use in the textile, paper making, sheet metal production, automotive and printing industries.

QB-LED運用了閃光效應，當閃光頻率等同于旋轉速度時，被測物呈現出凍結狀態。經典應用有：運動與振動分析，轉軸平衡，風扇，相機，揚聲器和噴墨式打印機的高速移動分析。是紡織行業，造紙行業，鈑金生產加工，汽車和印刷行業的理想之選。