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Turning the Power ON and OFF
Perform the following steps to turn the power ON or OFF.
Turning the Power ON
Step 1. If the standby switch (
(
Step 2. Press the standby switch to put it in the depressed position (
This operation turns ON the power, and the E4991A 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. Use either of the following methods to turn the power OFF.
•
Press the standby switch (
pressed down (
•
Send the shutdown command from an external controller.
These operations will start the E4991A shutdown process (required software and hardware
processes for turning the power off), and the power will turn OFF after a few seconds.
NOTE
Under normal circumstances, always press the standby switch (
command from an external controller, to execute the E4991A shutdown process. Never cut
off the power supply directly by disconnecting the power cable plug from the rear
panel of the unit.
If the power supply is cut off directly by disconnecting the power cable plug from the
instrument or the AC outlet, the shutdown process is not carried out and there is a risk of
damage to the E4991A's software or hardware.
Chapter 2
) in the lower-left part of the front panel is in the depressed
) position, press it to put it in the popped up position (
) in the lower-left part of the front panel (now in the
) position) to put it in the popped up (
Installation Guide
Power Supply and Blown Fuses
).
).
) position.
), or send the shutdown
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