MR8740T_Quick guide_eng_20191016H.pdf - 第20页
14 Operation Precautions Handling storage devices CAUTION • Do not carry the instrument with a USB ash drive inserted. Damage could result. • Do not subject the instrument to extreme shock or vibration. Shock can cause …
13
Operation Precautions
IMPORTANT
• Install a blank panel over the slot with no module installed. If the measurement is performed
without the blank panel installed, the instrument may not work as specied because of
temperature instability within the modules.
• If any unexpected waveform is observed or a module is not recognized, send the instrument for
repair.
• Disconnect all cables and remove a USB ash drive before carrying the instrument.
• Waveforms can frequently uctuate even when no voltage is applied due to an induction voltage.
This, however, is not a malfunction.
• This instrument may cause interference if used in residential areas. Such use must be avoided
unless the user takes special measures to reduce electromagnetic emissions to prevent
interference to the reception of radio and television broadcasts.
Precautions during shipment
CAUTION
To avoid damage to the instrument, protect it from physical shock when transporting
and handling. Be especially careful to avoid physical shock due to dropping it.
• Store the packaging materials even after unpacking, because you will need them when you
transport the instrument.
• To ensure safe handling, when transporting the instrument, please use the original box and
packing materials,
but do not use if the box is damaged or warped, or if the packing materials are in poor condition
or incomplete.
If you nd any damage, contact your authorized Hioki distributor or reseller.
• When packing the instrument, make sure to disconnect the test leads and power supply cords
from the main device.
• When transporting, avoid dropping or other excessive impact.
CD precautions
• Exercise care to keep the recorded side of discs free of dirt and scratches. When writing text on a
disc’s label, use a pen or marker with a soft tip.
• Keep discs inside a protective case and do not expose to direct sunlight, high temperature, or
high humidity.
• Hioki is not liable for any issues your computer system experiences in the course of using this
disc.
14
Operation Precautions
Handling storage devices
CAUTION
• Do not carry the instrument with a USB ash drive inserted. Damage could result.
•
Do not subject the instrument to extreme shock or vibration. Shock can cause damage to
the built-in SSD unit.
• Do not insert a storage device upside down, backward, or in the wrong direction.
Doing so may damage the storage device or instrument.
Exercise care when using such products because static electricity could damage the
external storage device or cause a malfunction of the instrument.
IMPORTANT
• Do not extract any external storage device or turn off the instrument while the instrument is
accessing the storage device (while the green DIAG LED is lighting up). Data stored in the
device could be lost.
• No compensation is available for loss of data stored on the external storage device (USB ash
drive) or the built-in SSD unit of the instrument, regardless of the content or cause of damage
or loss. Be sure to back up any important data stored on the device (USB ash drive) and the
built-in SSD unit of the instrument.
• When the instrument is left powered off for a long period of time (about 1 year or more), the
data saved to the built-in SSD may be lost. Be sure to back up the data if the instrument is to
be left powered off for a long time.
• With some external storage device, the instrument may not start up if power is turned on while
the device is inserted. In such a case, turn off and cycle the instrument.
• The instrument supports not all commercially available USB ash drives.
• The number of times data can be written on external storage devices (USB ash drive) and the
built-in SSD unit of the instrument is limited by their ash memory. If data has been rewritten
many times, data reading and writing capabilities will be degraded. In that case, replace the
device.
• Model Z4006 USB Drive can be used to save data. Use the product available as Hioki’s option
only. (p. 5)
15
Operation Precautions
Built-in battery
The instrument contains a battery (sealed lead acid battery) to shut down Windows
®
in case power
is cut (power outrage or turning off a breaker). Since the battery has a limited life expectancy,
it must regularly be replaced. When replacing batteries, please contact your authorized Hioki
distributor or reseller.
Expected lifetime: About 2 years (Operated at an ambient temperature of
25°, when the instrument is turned off once a day)
About 4 years (Operated at an ambient temperature of
25°, when the instrument is turned off ve times a year)
CAUTION
• You have to charge the battery periodically even if you do not use the instrument.
Periodically charge the battery every three months at a storage temperature of 35°C;
every six months at a storage temperature of 25°C. Failure to do so may reduce the
battery life expectancy.
• Do not install the instrument in a sealed space or near a re. Doing so may cause an
explosion or re.
• Do not use the instrument at high ambient temperature. Do not use the instrument
with the end-of-life battery. Doing so may cause electrolyte leakage, resulting in a bad
inuence that includes a re at a worst. Make sure that you use the instrument within
the operating temperature range and inspect and replace the battery periodically.