3-8
IM 2558A-01EN
3.4 Turning On and Off the Power Switch
Before Turning On the Power, Check That:
• The instrument is installed properly. → section 3.2, “Installing the Instrument”
• The power cord is connected properly → see section 3.3, “Connecting to the Power Supply”
Power Switch Location
The power switch is located in the lower left of the front panel.
Turning On and Off the Power Switch
The power switch is a push button. Press the button once to turn the instrument on and press it again
to turn the instrument off.
ON
OFF
2558A
Operations Performed When the Power Is Turned On
When the power switch is turned on, a self-test starts automatically. When the self-test completes
successfully, the instrument will be configured with the settings that were in use immediately before
the power was turned off. For the settings that are retained even when the power is turned off, see
appendix 5.
Before using the instrument, make sure that the self-test completes successfully.
Note
• After turning the power switch off, wait at least 10 seconds before you turn it on again.
When the Power-on Operation Does Not Finish Normally
• If the instrument does not operate as described above when the power switch is turned on, turn the power
switch off, and then:
• Check that the power cord is securely connected.
• Check that the correct voltage is coming to the power outlet. → section 3.3, “Connecting the Power
Supply”
• Initialize the instrument. See section 8.3.
• If the instrument still does not work properly, contact your nearest YOKOGAWA dealer for repairs.
• If an error code is displayed, check the information in section 15.2, and take the appropriate actions.
To Generate Accurate Output
• Allow the instrument to warm up for at least 30 minutes after turning on the power switch. If
the instrument has been stored in a hot-temperature, high-humidity environment, warm up the
instrument for at least a day before starting use.
• Keep the OUTPUT switch turned off during warm-up.
After warm-up is complete, turn the OUTPUT switch on.