PR8111、PR8112_user_manual_eng_20191015H.pdf - 第10页

Operati ng Precaut ions 7 How to install batteries: "Installing Alkaline Batt eries" ( p. 17) How to connect the adapter:"Connecting the AC adapter" (p. 18) If you con nect the AC ada pter while bat t…

Operating Precautions

Handling the Instrument

• Do not allow the instrument to get wet, and do not take measurements with wet

hands. This may cause an electric shock.

• Do not attempt to modify, disassemble or repair the instrument; as fire, electric

shock and injury could result.

• To avoid damage to the instrument, protect it from physical shock when transporting and

handling. Be especially careful to avoid physical shock from dropping.

• Do not slant the device or place it on top of an uneven surface. Dropping or knocking

down the device can cause injury or damage to the device. Install the instrument on a

level surface.

• Do not install the instrument with any side except the bottom facing down. This may

cause a fire or other malfunction in the instrument.

• Exercise care to keep water droplets from accumulating on or getting into the instrument.

Failure to do so may cause the instrument to malfunction.

Handling pens and recording paper

• Use only genuine Hioki pens and recording paper (p. 33).

• Do not touch pens while recording is in progress.

• Do not use damp recording paper. Doing so may cause the instrument to malfunction.

• Do not reuse recording paper. Doing so may cause the paper to misfeed.

When using fanfold paper

• Ink may run at fold lines. If this running is unacceptable, please use roll paper.

• Paper may not fold properly when used in a very hot, humid environment or when record-

ing waveforms that cover a large percentage of the page. It is recommended to use roll

paper for such applications.

This product 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.

Handling the Cords and Cables

• Avoid stepping on or pinching cables, which could damage the cable insulation.

• To avoid instrument malfunction or damage due to broken connections, do not bend or

pull on the power cord or cables at their base.

Operating Precautions

How to install batteries: "Installing Alkaline Batteries" (p. 17)

How to connect the adapter:"Connecting the AC adapter" (p. 18)

If you connect the AC adapter while batteries are installed in the instrument, the AC

adapter takes precedence.

Using the Batteries

• To avoid electric shock, turn off the POWER switch and disconnect the AC adapter

and connection cables before replacing the batteries.

• After replacing the batteries, replace the cover and screws before using the instru-

ment.

• Battery may explode if mistreated. Do not short-circuit, recharge, disassemble or

dispose of in fire.

• Handle and dispose of batteries in accordance with local regulations.

• Keep batteries away from children

• Do not mix old and new batteries, or different types of batteries. Also, be careful to

observe battery polarity during installation. Otherwise, poor performance or damage from

battery leakage could result.

• Use only the specified type of battery (six LR20 alkaline batteries).

• To avoid corrosion and damage to this instrument from battery leakage, remove the bat-

teries from the instrument if it is to be stored for a long time (for a month).

• After use, always turn OFF the power.

• You can check the remaining battery life with the LED on the left side of the instrument. (p.

10)

Using the AC Adapter

• Use only the supplied Model 9418-15 AC Adapter. AC adapter input voltage range is

100 to 240 VAC (with ±10% stability) at 50/60 Hz. To avoid electrical hazards and

damage to the instrument, do not apply voltage outside of this range.

• To avoid electrical accidents and to maintain the safety specifications of this instru-

ment, connect the power cord provided only to a 3-contact (two-conductor +

ground) outlet.

• Turn the instrument off before connecting the AC adapter to the instrument and to

AC power.

• Before turning the instrument on, make sure the supply voltage matches that indi-

cated on the AC adapter. Connection to an improper supply voltage may damage

the instrument or AC adapter and present an electrical hazard.

• For safety reasons, disconnect the power cord when the instrument is not used and

before connecting it to a device to be tested.

• To avoid damaging the power cord, grasp the plug, not the cord, when unplugging it from

the power outlet.

Operating Precautions

Connecting Cables

• The maximum input voltage is 250 VDC. Attempting to measure voltage in excess

of the maximum input could destroy the instrument and result in personal injury or

death.

• The maximum rated voltage between input terminals and ground is 300 VAC, DC.

Attempting to measure voltages exceeding 300 V with respect to ground could

damage the instrument and result in personal injury.

• To avoid electrical accidents, confirm that all connections are secure. The

increased resistance of loose connections can lead to overheating and fire.

• To avoid experiencing an electric shock or causing a short-circuit at the input ter-

minals, only insulated crimp contacts should be used on wires being connected to

input pins. (The input terminal pin diameter is M6.)