Starting The E4990A; Turning The Power On And Off - Keysight Technologies E4990A Installation Manual

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Installation

Starting the E4990A

Turning the Power ON and OFF

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This section describes how to turn ON/OFF the E4990A
power and how to cut off the power supply in the case of
emergency.
The standby switch can turn ON/OFF the E4990A. The color
on the button shows the status, as indicated below:
Indicator Color
Green
Orange
Red
Perform the following steps to turn the power ON or OFF.
Turning the Power ON
Step 1.
Confirm if the Line Switch on the rear panel is
turned ON. The switch should always be turned ON.
Step 2.
Press the standby switch once. It changes to green
color.
This operation turns ON the power, and the E4990A starts
the self- test.
Step 3.
Confirm that the self- test indicates normal
operation.
Normal operation is confirmed by the self- test if no error
message appears.
Turning the Power OFF
Step 1.
To turn OFF the power of the E4990A, first, press
this standby switch or send a shutdown command from the
external controller to activate the shutdown process (the
process of software and hardware necessary to turn OFF the
power supply). This puts the E4990A into the standby state
and the button changes to orange color.
Description
Normal power on status
Standby status
Illegal power on status
Impedance Analyzer