I once new a way of checking for an open relay by telneting into port 25 on the smtp server. I have since forgotten. Can anyone reffresh my memory as I dont want to leave my mail server open to ...

With its ease of configuration and its comprehensive range of facilities, including a variable-frequency voltage source with a continuous phase-shift function, Megger’s new self-contained SVERKER 780 ...

Traditional testing methods can still be used to test 61850 devices with the MPRT IEC 61850 is the new international communication standard for substations. The main goal of 61850 is to obtain ...

NASA and its commercial partners are conducting demonstrations of advanced satellite relay capabilities supporting near-Earth science missions as part of the Communications Services Project.

RF coaxial SPDT relays address signal-routing applications that demand a combination of high frequency, high power, and excellent RF performance. What role does an SPDT relay play in test applications ...

Anyone who assumes that passive or electromechanical components are simple is either naive or inexperienced. Even a basic, functionally simple component such as a high-power, milliohm current-sense ...