Keysight E4990A Installation Manual

Also see for E4990A: Help guide Troubleshooting guide Parts Replacement

Contents

Keysight E4990A Installation Manual Manual pdf 20 page image

20 Keysight E4990A Impedance AnalyzerIntroductionStarting the E4990A1-Step 2. Next, if necessary, turn OFF the power supply to the power cable receptacle(Line Switch) on the rear panel.Figure 1-4 Line switch (Always ON) and power cable receptacleDisconnection from Supply SourceThe power supply of the E4990A is cut off by disconnecting the plug of thepower cable (on either AC outlet side or E4990A side). When it is necessary todisconnect the power supply in order to avoid shock hazards, etc., pull out thepower cable plug from either the AC outlet side or the E4990A side.Under normal use, never d irectly interrupt the power supply to the powercable receptacle on the rear panel when the power supply is turned ON.Always keep the Line Switch ON and never turn it.If you directly interrupt the power supply to the power cable receptaclewhen the power supply is turned ON, or turn OFF the Line Switch, theshutdown process will not work. This could damage the software andhardware of the E4990A and lead to device failure.Turning ON the power supply after a faulty shutdown may cause thesystem to start up in a condition called "safe mode." If this occurs, firstshut down the system to set it to the standby state and then turn ON thepower supply again to start up the system in normal mode.