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Defi

  • ADC轉換器技術用語 (A/D Converter Defi

    ANALOG INPUT BANDWIDTH is a measure of the frequencyat which the reconstructed output fundamental drops3 dB below its low frequency value for a full scale input. Thetest is performed with fIN equal to 100 kHz plus integer multiplesof fCLK. The input frequency at which the output is −3dB relative to the low frequency input signal is the full powerbandwidth.APERTURE JITTER is the variation in aperture delay fromsample to sample. Aperture jitter shows up as input noise.APERTURE DELAY See Sampling Delay.BOTTOM OFFSET is the difference between the input voltagethat just causes the output code to transition to the firstcode and the negative reference voltage. Bottom Offset isDefined as EOB = VZT–VRB, where VZT is the first code transitioninput voltage and VRB is the lower reference voltage.Note that this is different from the normal Zero Scale Error.CONVERSION LATENCY See PIPELINE DELAY.CONVERSION TIME is the time required for a completemeasurement by an analog-to-digital converter. Since theConversion Time does not include acquisition time, multiplexerset up time, or other elements of a complete conversioncycle, the conversion time may be less than theThroughput Time.DC COMMON-MODE ERROR is a specification which appliesto ADCs with differential inputs. It is the change in theoutput code that occurs when the analog voltages on the twoinputs are changed by an equal amount. It is usually expressed in LSBs.

    標簽: Converter Defi ADC 轉換器

    上傳時間: 2013-11-12

    上傳用戶:pans0ul

  • HDMI一致性測試

      The high Defi nition multimedia interface (HDMI) is fastbecoming the de facto standard for passing digitalaudio and video data in home entertainment systems.This standard includes an I2C type bus called a displaydata channel (DDC) that is used to pass extended digitalinterface data (EDID) from the sinkdevice (such as adigital TV) to the source device (such as a digital A/Vreceiver). EDID includes vital information on the digitaldata formats that the sink device can accept. The HDMIspecifi cation requires that devices have less than 50pFof input capacitance on their DDC bus lines, which canbe very diffi cult to meet. The LTC®4300A’s capacitancebuffering feature allows devices to pass the HDMI DDCinput capacitance compliance test with ease.

    標簽: HDMI 測試

    上傳時間: 2013-11-21

    上傳用戶:tian126vip

  • DN427開關控制器故障保護電壓監測

      Have you had the exasperating experience of a laptop orPDA Defi antly not responding to your commands? Youfrantically press key after key, but to no avail. As hopeturns to anger (but just before you throw the company’slaptop through the window) you slam your fi nger againstthe on/off power button. Ten seconds later, your laptopfi nally surrenders and the screen goes black in a highpitched whimper.

    標簽: 427 DN 開關控制器 故障保護

    上傳時間: 2013-12-10

    上傳用戶:Vici

  • 低噪聲電壓基準的噪聲測量

      Frequently, voltage reference stability and noise Defi nemeasurement limits in instrumentation systems. In particular,reference noise often sets stable resolution limits.Reference voltages have decreased with the continuingdrop in system power supply voltages, making referencenoise increasingly important. The compressed signalprocessing range mandates a commensurate reductionin reference noise to maintain resolution. Noise ultimatelytranslates into quantization uncertainty in A to D converters,introducing jitter in applications such as scales, inertialnavigation systems, infrared thermography, DVMs andmedical imaging apparatus. A new low voltage reference,the LTC6655, has only 0.3ppm (775nV) noise at 2.5VOUT.Figure 1 lists salient specifi cations in tabular form. Accuracyand temperature coeffi cient are characteristic ofhigh grade, low voltage references. 0.1Hz to 10Hz noise,particularly noteworthy, is unequalled by any low voltageelectronic reference.

    標簽: 低噪聲 電壓基準 噪聲測量

    上傳時間: 2013-10-30

    上傳用戶:wxhwjf

  • //1602液晶顯示字屏為:TX-1C MCU GOTOYUNLONGDZ #include<reg52.h> #Define uchar unsigned char #Defi

    //1602液晶顯示字屏為:TX-1C MCU GOTOYUNLONGDZ #include<reg52.h> #Define uchar unsigned char #Define uint unsigned int

    標簽: GOTOYUNLONGDZ unsigned include Define

    上傳時間: 2014-11-14

    上傳用戶:caiiicc

  • QualNet Sensor Networks Library QualNet’s new Sensor Networks Library is a much awaited feature

    QualNet Sensor Networks Library QualNet’s new Sensor Networks Library is a much awaited feature set that supports the IEEE 802.15.4 standard, otherwise known as Zigbee. Zigbee networks are Wireless Personal Area Networks (WPANs) that are Defi ned by a low data rate, long battery life, and secure networking. Zigbee networks support automation and remote control

    標簽: Networks QualNet Library Sensor

    上傳時間: 2017-07-30

    上傳用戶:CSUSheep

  • Next+Generation+Telecommunications+Networks

    Never have telecommunications operations and network management been so important. Never has it been more important to move away from practices that date back to the very beginning of the telecommunications industry. Building and con- necting systems internally at low cost, on an as - needed basis, and adding software for supporting new networks and services without an overall architectural design will not be cost effective for the future. Defi ning operations and network manage- ment requirements at the 11th hour for new technologies, networks, and services deployments must also change. 

    標簽: Telecommunications Generation Networks Next

    上傳時間: 2020-05-31

    上傳用戶:shancjb

  • Smart+Grid

    The term “ smart grid ” Defi nes a self - healing network equipped with dynamic optimiza- tion techniques that use real - time measurements to minimize network losses, maintain voltage levels, increase reliability, and improve asset management. The operational data collected by the smart grid and its sub - systems will allow system operators to rapidly identify the best strategy to secure against attacks, vulnerability, and so on, caused by various contingencies. However, the smart grid fi rst depends upon identifying and researching key performance measures, designing and testing appropriate tools, and developing the proper education curriculum to equip current and future personnel with the knowledge and skills for deployment of this highly advanced system.

    標簽: Smart Grid

    上傳時間: 2020-06-07

    上傳用戶:shancjb

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