• Feasa LED測(cè)試儀的使用Using the Feasa LED Tter(yser)：

 目前LED檢測(cè)的方法有分析儀和人工目測(cè)，儀器配置多、成本高、，對(duì)使用者的要求高，主要面對(duì)大型企業(yè)的研發(fā)部門；一些技術(shù)實(shí)力和資金有限的小型企業(yè)普遍采用人工目測(cè)的方法，其缺點(diǎn)顯而易見(jiàn)，對(duì)檢測(cè)人員的經(jīng)驗(yàn)有所要求，工作量大，容易視覺(jué)疲勞，導(dǎo)致漏檢和誤判，終導(dǎo)致效率低下。

Feasa LED測(cè)試儀可以充分發(fā)揮在PCBA組裝制程控制中的作用，在組裝有LED的PCBA生產(chǎn)過(guò)程中，通過(guò)對(duì)標(biāo)準(zhǔn)品PCBA的LED的顏色和亮度進(jìn)行學(xué)習(xí)，讀取一個(gè)相對(duì)值作為標(biāo)準(zhǔn)值，并設(shè)置標(biāo)準(zhǔn)值的上下限，然后批量讀取待測(cè)PCBA上的LED相對(duì)值與標(biāo)準(zhǔn)值進(jìn)行比對(duì)，從而判斷良品和不良品，地測(cè)試測(cè)，結(jié)合I在線測(cè)試和功能測(cè)試，不用增加測(cè)試工位，了效率，快速、全自動(dòng)化，避免人為漏判。

Feasa LED測(cè)試儀是一個(gè)測(cè)量系統(tǒng)，能夠?qū)崿F(xiàn)快速和自動(dòng)測(cè)試LED的顏色和亮度。每個(gè)LED分析儀能同時(shí)測(cè)量多達(dá)20個(gè)通道的不同顏色和強(qiáng)度的LED光源。從光纖 采集光源，進(jìn)行測(cè)量和分析。該裝置是專為L(zhǎng)ED和液晶顯示器等設(shè)計(jì)的自動(dòng)測(cè)試裝置。

The Feasa LED yser is a measurement system that allows fast and automatic tting of both the color and intensity (Brightns) of Light Emitting Diod (LEDs). tting of both the color and intensity (Brightns) of Light Emitting Diod (LEDs). Each LED yzer can simultaneously measure up to 20 different light sourc for Color and Intensity. Light from the LEDs is colleed by Plastic Optical Fibers (POF) and carried to the LED yzer board for measurement and ysis. The unit has been digned for tting LED's and other lighting devic such as LCD Displays automatically.

該分析結(jié)果可以通過(guò)并行接口、RS232串行接口或U接口讀取，讀回所需信息的時(shí)間小于1.5秒，這使得它適合集成在自動(dòng)測(cè)試設(shè)備（ATE）。對(duì)于過(guò)20個(gè) 通道的LED測(cè)量，可以串聯(lián)多個(gè)LED測(cè)試儀同時(shí)使用。

The rult of the ysis can be read out via the parallel interface, RS232 serial interface or U. The time needed to read back the information is ls than 1.5 seconds, which mak it very suitable to integrate in automatic tt equipment (ATE). For applications with more than 20 LEDs multiple LED ysers can be used together.

LED測(cè)試儀可用于功能測(cè)試 系統(tǒng)和I在線測(cè)試系統(tǒng)的應(yīng)用程序。測(cè)試的應(yīng)用范圍從LED的顯示器和移動(dòng)電話，汽車照明等，在電子行業(yè)生產(chǎn)線檢查系統(tǒng)中也被應(yīng)用于替代人工視覺(jué)。

The LED yser can be used for both Funional tting and for In-Circuit tt applications. The applications range from tting LED’s and Displays in mobile phon, lighting systems in the automobile industry or position checking of eleronics components in produion lin. It has also been implemented in artificial vision applications.

Feasa LED測(cè)試儀是一個(gè)大，高度，高重復(fù)性，適應(yīng)，使用方便，快速，全自動(dòng)化LED顏色和強(qiáng)度測(cè)量 儀器，廣泛應(yīng)用于PCB業(yè)界和測(cè)試設(shè)備。

In summary the Feasa LED yser is a powerful, highly accurate, highly repeatable, adaptable, easy to use, fast and fully automated LED color and intensity measurement sensor which has found many applications in the PCB industry on both funional and In-Circuit tt equipment.

• Feasa LED測(cè)試儀的優(yōu)勢(shì)Advantag of the Feasa LED yser

>該系統(tǒng)的設(shè)計(jì)了良好的重復(fù)性和顏色的判別。

The dign of the system ensur an excellent repeatability and color discrimination.

 >高度準(zhǔn)確地測(cè)量LED色彩。

Highly accurate reprentation of the LED color in different color space.

 >安裝方便。

Easy installation.

 >使用1mm的光纖（POF），可輕松地使用現(xiàn)成的工具。

Us 1mm plastic optic fiber (POF) which can be worked on easily using many off the shelf tools.

 >適合用在小空間。

Very suitable for applications where space is at a premium.

 >可以修改LED分析儀傳感器的靈敏度。

Possibility to modify the sensitivity of the LED yser sensor.

 >閃爍和PWM（脈寬調(diào)制），也可以進(jìn)行測(cè)試。

Blinking and PWM (Pulse Width Modulation) LEDs can also be tted.

 >串行RS232，I和U接口。

Serial RS232, I and U interfac available.

 >LED分析儀使用的系統(tǒng)，可以測(cè)量和測(cè)試類型LED的顏色和亮度。

All t, colors and brightns of LED's can be measured and tted using the LED yser system.

 >從2到20個(gè)通道，以適應(yīng)任何類型的應(yīng)用。

Different versions of the tter, featuring from 2 to 20 channels to adapt it easier to any kind of application

• Feasa LED測(cè)試儀的應(yīng)用Applications of the Led yser

• Feasa LED測(cè)試儀的參數(shù)SPECIFICATIONS

INTERFAC接口:

注：

1、U接口可以直接為L(zhǎng)ED測(cè)試儀供電，不需要額外提供外部電源。波特率達(dá)460800。

Uoffers a very simple interface to the LED yser with requirement for an additional power supply. Very high baud rat, up to 460800 baud, are available.

2、RS232串口波特率達(dá)115200，需要額外提供外部電源。

TheRS232 Serial Portis easy to use with a max baud rate of 115200. It requir the use of an external power supply.
 The 20pin I Port can be used in either Frequency Out or Synchrous Serial Mode.

3、Frequency Out應(yīng)用于RS232串口不能訪問(wèn)的情況下，用三個(gè)頻率表示LED的顏色與亮度。

The Frequency Out protocol can be used where accs to an RS232 Serial Port is t available. Three frequenci are used to reprent the Color and Intensity of the LEDs.

4、Synchrous Serial應(yīng)用于當(dāng)使用者的資源受限或者沒(méi)有其它端口可供選擇的情況下。

The Synchrous Serial protocol is suitable when tter rourc are limited or other options are available. 

5、Daisy Chain接口可以將多個(gè)LED測(cè)試儀使用菊花鏈連接器連接在一起，要一個(gè)RS232串行端口或U端口連接多達(dá)30個(gè)LED測(cè)試儀。

Multiple LED ysers can be conneed together using the Daisy Chain Conneors. Only one RS232 Serial Port or U Port is required to conne up to 30 LED ysers.

TT TIME測(cè)試時(shí)間:

測(cè)試速度取決于LED的亮度，亮度高的測(cè)試時(shí)間短，亮度低的測(cè)試時(shí)間長(zhǎng)。根據(jù)LED的光強(qiáng)（亮度）同時(shí)測(cè)試20個(gè)LED的時(shí)間快達(dá)1.2ms。從光纖中讀取數(shù)據(jù)，平均每根光纖大約5ms。見(jiàn)下面舉例：

The speed of the tt is dependent on the intensity of the LEDs being tted, i.e. Bright LEDs have a shorter Tt Time, Dimmer LEDs have a longer Tt Time. The capture (measurement) of up to 20 LEDs is done in parallel and can be achieved in tim as fast as 1.2ms depending on the Intensity (Brightns). The data is read back from each fiber sequentially and tak approximately 5ms per fiber, for example:

Ultra High Brigh LEDs:

1 LED    ---捕捉時(shí)間2ms加上數(shù)據(jù)讀取時(shí)間5ms，總共7ms。

1 LED    ---Capture Time is 2ms and Read Back is 5ms, Total 7ms

20LED's---捕捉時(shí)間2ms加上數(shù)據(jù)讀取時(shí)間100ms，總共102ms。

20LED's---Capture Time is 2ms and Read Back is 100ms, Total 102ms

Dim LEDs:

1 LED    ---捕捉時(shí)間650ms加上數(shù)據(jù)讀取時(shí)間5ms，總共655ms。

1 LED    ---Capture Time is 650ms and Read Back is 5ms, Total 655ms

20LED's---捕捉時(shí)間650ms加上數(shù)據(jù)讀取時(shí)間100ms，總共750ms。

20LED's---Capture Time is 650ms and Read Back is 100ms, Total 750ms

U、RS232端口測(cè)試捕捉時(shí)間   U / RS232 SERIAL PORT – TT CAPTURE TIM

每根光纖讀取時(shí)間一般保持在5ms時(shí)間左右。

The Read Back Time per fiber is always approximately 5ms.

I捕捉時(shí)間與U/RS232串口相同。但是，數(shù)據(jù)讀取時(shí)間取決于于被測(cè)量的頻率。使用安捷倫i3070的讀取的時(shí)間大約是400ms至700ms。

For I the Capture Tim are the same as U/RS232 Serial Port. However, the Read Back Tim are dependent on the frequenci being measured. Using an Agilent i3070 the Read Back Tim are 400ms to 700ms approximately.

OUTPUTS輸出:

DRIVERS/SOFTWARE驅(qū)動(dòng)及軟件：

Feasa provid a comprehensive suite of Drivers and Software for ease of use.

In addition, Feasa also provid a number of programm to allow for the most efficient and appropriate use of the yser.

MODEL型號(hào)：