1786-FS20

1786-FS20

1786-FS20

d. 来自接地系统混乱时的干扰
接地是提高电子设备电磁兼容性（EMC）的有效手段之一。正确的接地，既能***电磁干扰的影响，又能***设备向外发出干扰；而错误的接地，反而会引入严重的干扰信号，使PLC系统将无法正常工作。
e. 来自PLC系统内部的干扰
主要由系统内部元器件及电路间的相互电磁辐射产生，如逻辑电路相互辐射及其对模拟电路的影响，模拟地与逻辑地的相互影响及元器件间的相互不匹配使用等。
f. 变频器干扰
一是变频器启动及运行过程中产生谐波对电网产生传导干扰，引起电网电压畸变，影响电网的供电质量；二是变频器的输出会产生较强的电磁辐***扰，影响周边设备的正常工作。

备货，备货，降降降，火火火，火火火……
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HP/Agilent 8722ES Network Analyzer,50MHz-?40GHz      
       
 HP/Agilent 8720ES Vector Network Analyzer 50MHz-20GHz      
       
 E8241A PSG-L Series Performance Signal Generator, 20 G      
      
 HP/Agilent 83630A Synthesized Swept-Signal Generator      
      
 E4405B ESA-E Series Spectrum Analyzer, 9 kHz to 13.2 G      
        
 ENI 5100L-NMR 1.5-400MHz 100W Power Amplifier      
        
 HP/Agilent 8753D Network Analyzer, 30 kHz to 6 GHz      
        
 HP/Agilent 8563E Spectrum Analyzer, 30 Hz to 26.5 GHz      
     
 HP/Agilent 4194A Impedance/Gain-?Phase Analyzer      
      
 5087-7281 Multiplier Amplifier Switch Splitter Assembly      
        
 HP/Agilent 8340A Synthesized Sweeper,10 MHz 26.5 GHz      
        
 HP/Agilent 8593E Spectrum Analyzer, 9 kHz to 22 GHz      
       
 HP/Agilent 8563A 9 kHz 22 GHz spectrum analyzer      
        
 HP/Agilent 8902A Measuring Receiver      
        
 HP/Agilent 85052B Standard Mechanical Calibration Kit      
        
 8560E Portable Spectrum Analyzer, 30 Hz to 2.9 GHz      
        
 HP/Agilent 8970B Noise Figure Meter, 10 MHz to 2047 MHz      
        
 HP/Agilent 8970B Noise Figure Meter, 10 MHz to 2047 MHz      
        
 HP/Agilent 85047A S-Parameter Test Set,300 kHz to 6 GHz      
        
 HP/Agilent 85047A S-Parameter Test Set,300 kHz to 6 GHz      
        
 HP/Agilent 5087-7277 TBR Mixer Brick 20 GHz      
        
 HP/Agilent 5087-7070 Yig Tuned Harmonic Mixer      
        
 HP/Agilent 5086-7884 YIG TUNED HARMONIC MIXER      
        
 HP/Agilent 5087-7031 Yig Tuned Harmonic Mixer      
       
 HP/Agilent 8648D Signal Generator,9 KHz - 4 GHz      
        
 HP/Agilent 5361B Pulse / CW Microw***e Counter, 40 GHz      
        
 HP/Agilent 11793A Microw***e Converter      
        
 HP/Agilent 8591C CABLE TV ANALYZER ,OPT 011 041 107 130      
HP/Agilent 8648D Signal Generator,9 KHz - 4 GHz       
        
 E4422B  ESG-A Series Analog RF Signal Generator, 4 GHz      
       
 E4422B  ESG-A Series Analog RF Signal Generator, 4 GHz      
        
 HP/Agilent 85331-60033 Transfer Switch      
        
 HP/Agilent E5071-66571 source board      
        
 HP/Agilent 11848A Phase noise interface for the 3048A      
        
 HP/Agilent 5086-7620 Source Module Mixer      
       
 HP/Agilent 85134F Flexible Cable Set, 2.4 mm to 3.5 mm      
       
 HP/Agilent 5087-7034 Yig Tuned Harmonic Mixer      
        
 HP/Agilent E4403-60074 3GHZ RF Assy, opt 1D5      
        
 HP/Agilent E4403-60073 3GHZ RF Assy      
       
 HP/Agilent 5086-6981 YIG TUNED HARMONIC MIXER      
        
 HP/Agilent 5086-7472 SWITCH/DOUBLER, 40GHz      
       
 HP/Agilent 70590A OPT Z40 RF SECTION RANGE 26.5 - 40GHz      
       
 HP/Agilent 5086-7589 Switch, 40 GHz      
       
 Ando AQ8423B Optical Amplifier Analyzer      
       
 HP/Agilent 85332-60003 UTG Microw***e Switch,0.045~40?G      
       
 HP/Agilent 83492A Optical clock recovery module      
      
 HP/Agilent 8971C Noise Figure Test Set,10MHz to 26.5GHz      
        
 HP/Agilent 5087?-7238 Reference Switch      
        
 HP/Agilent E5071-61015 TBR Module,carpente?r RCV RF      
       
 HP/Agilent 08719-60009 YIG TUNED OSCILATOR      
        
 HP/Agilent 5087-7081 YIG TUNED OSCILATOR      
      
 HP/Agilent 4xE5250A Low-leakage Switch Mainframe      
       
 HP/Agilent 4338B Milliohmmeter, 1 kHz      
        
 HP/Agilent 5086-7583 Low Band Microcircuit Assembly      
       
 5086-7465 TBR Microcircui     
        
 HP/Agilent 8720D/8722D Front Panel      
        
 HP/Agilent 85027B Directional Bridge, 10 MHz to 26.5 GH      
       
HP/Agilent 85046A S-Parameter Test Set       
        
 HP/Agilent 85046A S-Parameter Test Set      
       
 HP/Agilent 85046A-P S-Parameter Test Set      
        
 HP/Agilent E4440-60170 LO synth/ sampling osc assembly      
        
 HP/Agilent E4400-60718 Assembly Board Sampler      
        
 HP/Agilent 5086-7515 YIG Oscillator 2.0 - 7.5GHz