Description
网络故障下的自动无扰切换。所有DCS通讯系统都具有在线监测功能,一旦工作通讯网络发生故障,系统将自动切换到处于热备状态的冗余网络上,保证整个系统的连续无扰运行,在有些系统中,冗余网络之间周期性地切换,以防止热备网络出现错误时未被及时发现,从而失去热备作用。
GENERAL RADIO 0-280V@ 0-8A DUAL METERED VARIAC LIKENEW!
45A ANODIZING ELECTRO PLATING ELECTROFORMING RECTIFIER
SIGMA VSS VIDEO AUDIO CAMERA WAVEFORM MONITOR SWITCHER
NEWBOX APS230 2CH HANDHELD DIGITAL STORAGE OSCILLOSCOPE
GVG TEN-XL VIDEO AUDIO CAMERA WAVEFORM MONITOR SWITCHER
HP 6428B 0-20V@0-45A VARIABLE REGULATED DC POWER SUPPLY
SORENSEN DCR40-25B 0-40V@ 0-25A METERED DC POWER SUPPLY
100AMP GOLD COPPER ZINC NICKEL CHROME PLATING RECTIFIER