3-6
IM 701510-01E
3.5
Turning the Power Switch ON/OFF
Points to be Checked before Turning ON the Power
Check that the instrument is correctly installed as described in Section 3.2
“Installing the Main Unit” (page 3-2).
Check that the SCSI cable is correctly connected as shown in Section 3.3
"Connecting the SCSI cable (for DL1520L with suffix code -C4)" (page 3-3).
Check that the power cord is correctly connected as shown in Section 3.4
“Connecting the Power Cord” (page 3-5).
Location of the Power Switch
The power switch is located on the front panel in the lower left corner.
Turning the Power ON/OFF
The power switch is a push-button type switch, and the power is turned ON and OFF
alternately as the switch is pressed.
OFF
ON
The Order in Turning the Power Switches ON/OFF
When peripheral devices are connected to the half pitch interface connector of the this
instrument, turn ON the power switches on all peripheral devices first, then turn ON the
power switch of this instrument. When turning OFF the power, reverse the order.
Response at Power ON
Calibration (correction of the ground level and gain etc.) starts automatically when the
power switch is turned ON. Front panel keys are not operative during calibration (which
lasts approximately seven seconds). When calibration has been completed, 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 3-5.)
• Check that the fuse is not blown. (Refer to page 15-8.)
• 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 4.3 “Initializing Settings” (page 4-4).
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 Observation and Measurement
Turn the power switches ON and allow the unit to warm up for approximately 30 minutes.
Just before starting observation/measurement, perform calibration. The ground level and
gain etc. will be corrected. For a description of the calibration method, refer to Section 4.5
“Performing Calibration” (page 4-6).
Response at Power OFF
Settings made prior to turning OFF the power are retained. This allows display of
waveforms using these 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 five years if it is used
at an ambient temperature of 23
°
C. When the battery runs out, an icon
Li
appears in the top left of the
screen. In this case, the battery needs to be replaced immediately. The battery cannot be replaced by the
user. Contact your nearest YOKOGAWA representative as listed on the back cover of this manual.
