3
3-5
IM 701830-01E
Before Starting Observation and Measurement of Waveforms
Turning the Power ON or OFF
Items to be checked before turning ON the power
Check that the instrument is installed correctly as instructed in Section 3.2 “Installing” (page 3-
2).
Check that the power cord is connected correctly as sown in Section 3.3 “Connecting the Power
Cord” (page 3-4).
Turning the power ON/OFF
Pressing the power switch on the left side of the instrument to the “ON( | )” side, turns the
power ON. Pressing it to the “OFF(O)” side turns the power OFF.
Response at Power ON
Self test and calibration start automatically when the power switch is turned ON. It takes
approximately 30 seconds; if the check results are satisfactory, the normal waveform display
screen will appear.
Note
If calibration does not start when the power is turned ON, or if the normal waveform display screen does
not appear, check the following points.
• Check that the power cord is plugged in properly.
• Check that the correct voltage is being supplied from the AC outlet. (Refer to page 3-4.)
• If the power switch is turned ON while the INITIALIZE key is pressed, all settings will be reset to the
factory settings. For details, refer to Section 4.2 “Initializing Settings” (page 4-3).
If there is still no power even after the above points have been checked, contact your nearest YOKOGAWA
representative as listed on the back cover of this manual.
For Accurate Measurement
Turn the power switches ON and allow the unit to warm up for at least 30 minutes.
After warm-up is complete, perform calibration. (Refer to Page 4-9.)
Response at Power OFF
Settings made prior to turning OFF the power are retained (even if the power cord is removed).
This allows display of waveforms using those saved settings the next time the power is turned
ON.
Note
The settings are backed up by a lithium battery. The battery lasts for approximately 5 years if it is used at
an ambient temperature of 23
°
C. When the battery voltage drops below the specified level, a message will
appear on the screen when the power is turned ON. If this message is displayed frequently, the lithium
battery needs to be changed quickly. The battery cannot be replaced by the user, so contact the nearest
YOKOGAWA representative listed on the back cover of this manual.
3.3 Connecting the Power Cord