low-level signal 中文意思是什麼
low-level signal
解釋
低位訊號-
Test open short no need oscilloscope and meter, because scope. very difficult to distinguish hi - level and vcc, and low - level and gnd signal
免電表和示波器，即可判定開短路;並且無示波器hi - level與vcc間， -
This dissertation only considers the signal ’ s distortion by interconnect, such as delay, reflection, discontinuity of microstrip, crosstalk and simultaneous switching noise, and so on. nowadays, there are some simulation software in pcb level, but they are lack of the well ability of modeling. in order to simulate the interconnect accurately, we have to make use of three - dimension full wave analysis method, whose disadvantage is low speed in computing, but is competent for developing rules in high - speed designs
目前也有一些針對這些噪聲的高速pcb板級模擬軟體，但它們都缺乏詳盡的建模能力，特別是當頻率逐漸提高和電路板日益復雜后，更是顯得無能為力，要精確地對互連結構進行分析，三維全波模擬器似乎不可缺少，其缺點就是速度慢，對整板模擬很難實現，但非常適用於規則開發，而這正好是本文除了建模與模擬方法研究外另一個重點。 -
The core of epiipc is the 51 series microcontrollers, which automatic detect the error signal of the circuit, like short circuit, overload, high voltage, low voltage, current leakage etc. meanwhile it monitors and tests the insulation level of high voltage cable, with convenience two variable key setting and full chinese version lcd display features
本次研製的保護器以高檔51系列單片機為核心，能自動判斷線路中出現的短路、過載、過壓、欠壓、漏電等故障，並對高壓電纜的絕緣水平進行實時監測，有方便的兩鍵參數設定和全中文液晶顯示功能。 -
Sectional specification : magnetic oxide ring cores for interference suppression and low level signal transformer applications ; german version en 125500 : 1996
分規范.消除干擾和低頻信號傳輸用鐵氧體磁環芯 -
One is to use fourier transformation to convert the source signal from time domain to frequency domain and to discard high frequency harmonious components upwards of 19 ( gb / t14953 - 93 d5. 3 demanding ), then to have static huffman coding to the quantized char array which is composed of reserved direct current component and basic wave and each high frequency " s amplitudes and angles. the other is to use discrete wavelet transformation to convert the source signal from time domain to frequency domain and to set the high frequency coefficients that its absolute value is smaller than the given threshold to zero, then to have dynamic huffman coding to the quantized char array which is composed of multiple, wavelet ' s level, datum length, low frequency coefficients and reserved high frequency coefficients. mass simulinks and analyses under the two circumstances have done to show that data compression ratio is small and the relative error is also small and within the permission of engineering and the compression problem can be solved in theory of measured datum of power system
第一種情況的壓縮方法為：採用傳統的傅立葉變換把原始信號從時間域變換到頻率域，舍棄20次及其以上的高次諧波成分（保證了gb / t14953 ? 93d5 . 3要求） ，然後對保留的直流分量、基波和各次諧波的幅值和相角數據量化后和量化時分別乘以的倍數系數構成一個數組，以字元形式保存，採用靜態huffman編碼對變換數據進行壓縮；採用離散小波變換把原始信號從時間域變換到頻率域，然後對分解得到的高頻系數進行閾值量化處理，對乘以的倍數系數、小波變換的階數、小波變換后的低頻、各級高頻以及原始數據長度、量化后的低頻系數以及保留的高頻系數大小、位置構成一個數組，以字元形式保存，採用動態huffman編碼對這個文件進行壓縮。 -
The lna is one of the most important and broad components in microwave communication system receiver, and is used to amplify the low level signal. as the first signal processing block after the antenna, the lna determines the noise figure and input voltage swr and greatly impacts the dynamic range
低噪聲放大器（ lna ）廣泛應用於微波接收系統中，是重要器件之一，主要用來放大低電平信號，由於是自天線下來第一個進行信號處理的器件， lna決定了整個系統的噪聲性能和電壓駐波比vswr ，並對動態范圍有著較大的影響。 -
In the implementation, main task is to produce the pumping signal. and the way to switch level and design analog low - pass filter are put forward in the design, too. plan using dsp is adopted in the design of the system
Ti的54xx系列dsp以其在數字信號處理上的優勢和先進的晶元性能可以比較容易的實現該設計的主要功能，完成系統中重要的內插和調制模塊，並可以通過其豐富的外設介面完成數據的輸入和輸出。 -
In the operation of the doubly salient permanent magnet ( dspm ) motor, some possible failures can occur, including the wrong connections of three armature windings, the wrong orders of three hall sensors, and the failures of hall sensor signals themselves, that is the hail sensor signal keeps the high level or the low level to be unchanged with the rotor position
摘要永磁雙凸極電機運行時，可能會出現以下常見故障：三相繞組線或和三相霍爾連接線的錯誤接線；霍爾信號自身的故障，即恆為高電平或低電平，其電平不隨轉子位置變化而變化。 -
Stcc and sstcc series capacitance transmitters have so many advantages such as new design, all specifications, easy installation, essence safety explosion - proof etc. they are famous for high accuracy, small, light, firm, convenient, good overload protection. stcc and sstcc series capacitance transmitters include pressure, difference of pressure, absolute pressure, flux, level and so on. the product whose options, signal, installation are according to the worldwide companies and price is very low observes domestic iec, so it is the best choice for the customer
Stcc及sstcc系列電容式變送器包括壓力差壓絕對壓力流量液位等品種，其選件信號制式安裝方式完全與世界其它公司產品一致，也與我國推行的「 iec 」標準要求相符，並且價格優勢明顯，是你理想的最佳選擇。 -
Electrical installations for open - cast mines and quarries - recommendations for winning, stacking and processing machinery, pumps and low signal level and communications systems
露天礦和採石場的電氣裝置.第4部分:開采層疊和處理機械設備泵和低信號級及通信系統推薦標準 -
Working voltage : 5 24v operating current : 10ma 24v static 0. 6ma output signal connection : examines outputs 1 second low level to a vibration sensitivity : continuously may move outlook size : 50 30 20mm
工作電流： 10ma24v靜態0 . 6ma輸出信號介面：檢測到一次振動輸出1秒低電平靈敏度：連續可調 -
We find that the noise level of the record is very low. even in weak ground motion condition the digital broad - band record has high signal - to - noise ratio when the period is as long as 20 sec. the signal - to - noise ratio of the velocity - type records is lower than that of the acceleration - type records
木義發現，數宇寬頻帶記錄的啪盧水平很低，在川朔k達205時，即仗在弱地震動的惰況下，還具有較高的信啪比，並且濁度型記錄的信噪比禾廠加讓度型門錄的信噪比。 -
Sectional specification : magnetic oxide ring cores for interference suppression and low level signal transformer applications
分規范:干擾抑制和低水平信號變壓器應用的磁化氧化環芯 -
Harmonized system of quality assessment for electronic components - sectional specification : magnetic oxide ring cores for interference suppression and low level signal transformer applications
電子元器件質量評定協調體系.分規范:干擾抑制和低級信號傳輸用環形氧化物磁芯
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