Description
接地系统混乱对PLC系统的干扰主要是各个接地点电位分布不均，不同接地点间存在地电位差，引起地环路电流，影响系统正常工作。例如电缆屏蔽层必须一点接地，如果电缆屏蔽层两端A、B都接地，就存在地电位差，有电流流过屏蔽层
90 Day Warranty – Free Shipping!
Alcatel 7750 HSPS 90-7336-01 1P OC48/STM16 SR Card
90 Day Hardware Warranty – Free Overnight Shipping!
Alcatel 7670 HSPS 90-7336-02 OC48c IR STM16 IR Card
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Cyclone Microsystems Front End Processor SS7
30 Day warranty, Many SS7 Units in Stock
