3-5
IM 704210-01E
Before Starting Measurement
3
3.4 Turning the Power Switch ON/OFF
Items to be Checked Before Turning ON the Power
• Check that the instrument is installed correctly as instructed in 3.2 “Installing the Instrument”.
• Check that the power cord is connected correctly as shown in 3.3 “Connecting the Power
Cord”.
Location of the Power Switch and Turning it ON/OFF.
The power switch is located at the lower left of the front panel. To turn the power ON, press the
switch once. To turn the power OFF, press it again.
OFF
ON
Power-ON Initialization
When the power is turned ON, the instrument executes the following initialization checks. Panel
keys remain disabled during these checks. When initialization is completed, the display format
screen (the screen which is displayed when the DISPLAY key is pressed) will be displayed.
• ROM Check: Checks the ROM.
• DRAM Check: Checks the DRAM.
• Backup Check: Checks the calibration data.
Note
If the instrument fails to start up as described, turn the power switch OFF and then check the following
points.
• Check whether the power cord is plugged in properly.
• Check whether the correct voltage is being supplied from the AC outlet. (Refer to 3.3)
• Check whether the circuit breaker is ON. (Refer to 11.7.)
If the above checks do not resolve the problem, contact your nearest YOKOGAWA representative listed on
the rear cover of this manual.
For Accurate Measurement
Turn the power switches ON and allow the unit to warm up for at least 30 minutes. Make sure
that the installation conditions given in 3.2 are met.
Power-OFF Operation
The set-up information made prior to turning OFF the power will be retained even if the power is
turned OFF. However, measured data will not be retained, so make sure that necessary data is
saved to a floppy disk before turning the power OFF.
Note
The set-up information is backed up by a lithium battery. The battery lasts for approximately 10 years if it is
used at an ambient temperature of 23ºC. When the battery approaches the end of its life, the instrument begins
to display incorrect dates or times, or may fail to save or recall measured data correctly. If any such problem
is noticed, execute a self-test as described in 11.4, “Executing the Self-test”. If “LOW BATTERY” warning
message is displayed during the self-test, the battery needs to be replaced immediately. The battery cannot be
replaced by the user, so contact the nearest YOKOGAWA representative listed on the rear cover of this
manual.