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2 Preparation for Measurements
2
Preparation for Measurements
2.1 Measurement Workflow
Before using the instrument, be sure to read “Usage Notes” (p. 10).
Installation and connection
Insert the batteries. (p. 26)
As necessary, have other optional items available and ready.
Perform the startup check. (p. 33)
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5
Measurement
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6
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5 2 measurement terminals. (p. 28)
(As necessary, perform zero adjustment. (p. 64))
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Connect the test leads to the measurement object.
(As necessary)
Hold the display of the measured value. (p. 57)
Save the measured value. (p. 65)
Black
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Red
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9
End of the measurement
Move the test leads away from the measurement object and then turn off the power.
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Inserting/Replacing Batteries
2.2 Inserting/Replacing Batteries
Before using the instrument first time, insert four LR6 alkaline batteries. Before measurements, check that the battery level is sufficient. When the battery charge diminishes, replace the batteries.
Nickel-metal hydride batteries
Nickel-metal hydride batteries can be used. However, the discharge characteristic of these batteries is different from that of alkaline batteries. Be aware that the remaining battery power display does not function properly.
WARNING
To avoid electric shock, disconnect the test leads from the object to be measured before replacing the batteries.
To avoid the possibility of explosion, do not short circuit, charge, disassemble, or incinerate batteries.
After battery replacement but before using the instrument, reattach and screw down the battery cover.
CAUTION
Poor performance or damage from battery leakage could result. Observe the cautions listed below.
• Do no mix new and old batteries, or different types of batteries.
•
• Be careful to observe the battery polarity during installation.
Do not use batteries after their recommended expiry date.
• Do not allow used batteries to remain in the instrument.
• To avoid corrosion from battery leakage and/or damage to the instrument, remove the batteries from the instrument if it is to be kept in storage for an extended period.
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Inserting/Replacing Batteries
• The indicator appears when the battery charge diminishes.
Replace the batteries as soon as possible.
•
• After use, be sure to turn off the instrument.
Handle and dispose of batteries in accordance with local regulations.
Screws
Rear
1 Have the following items available and ready.
• Phillips screwdriver
• Alkaline (LR6) battery or manganese (R6) battery × 4
2 Remove the test leads from the instrument.
3 Set the rotary switch to OFF.
4 Using a Phillips screwdriver, remove the screws (2 locations) from the battery cover on the rear of the instrument.
5 Remove the battery cover.
6 When replacing the batteries, remove all old batteries.
7 Insert 4 new batteries (LR6 or R6), being careful to the battery polarity.
8 Reattach the battery cover.
9 Secure the cover with the screws.
After the battery cover is removed, the fuse can be seen. When replacing the fuse, see “6.4
Replacing Fuses” (p. 106).
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Using Test Leads
2.3 Using Test Leads
The L9207-10 Test Lead supplied with the instrument are used for measurements.
Depending on measurement locations, use our optional measurement cables. For details on the optional items, see “Options
(sold separately)” (p. 2).
WARNING
• To prevent a short circuit accident, be sure to use the test leads with the sleeves attached when performing measurements in the CAT III and CAT
IV measurement categories. (For the measurement categories, see “Measurement categories” (p. 9).)
• If the sleeves are inadvertently removed during measurement, stop the measurement.
CAUTION
• To ensure safe operation, use only test leads specified by our company.
• When carrying out measurements with the sleeves in place, be careful to avoid damaging the sleeves.
• The tips of the metal pins are sharp and may cause injury. Do not touch the tips.
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Using Test Leads
L9207-10 Test lead
Black
Red
Barriers Sleeves
1
Plugs
Cables Metal pins
The plugs of the test leads are covered with the safety caps.
Before use, remove the caps.
Safety cap
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Metal pin Connect to the object to be measured.
4 mm or less (sleeve attached)
19 mm or less (sleeve removed)
Diameter φ approx. 2 mm
Sleeve
Barrier
Attach to the metal pins to prevent short circuit accidents.
Represents the safe handling distance from the metal pins.
During measurement, do not touch the area between the barrier and the tip of the sleeve.
Plug
Cable
Connect to the measurement terminals on this instrument.
Double sheathed cables (Length: approx. 900 mm, Diameter:
φ approx. 3.6 mm)
When the white portion inside the cable is exposed, replace with a new L9207-10 Test Lead.
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Using Test Leads
Removing and attaching the sleeves
Removing the sleeves Attaching the sleeves
Gently hold the bottom of the sleeves and pull the sleeves off.
Safely store the removed sleeves so as not to lose them.
Insert the metal pins of the test leads into the holes of the sleeves, and firmly push them all the way in.
Connecting to the instrument
1 Turn the rotary switch to the desired measurement function.
2 Connect the test leads to the relevant measurement terminals.
1
• Besides the current measurement
(excluding the clamp)
COM terminal
V terminal
Connect the black test lead.
Connect the red test lead.
2
• Current measurement
COM terminal Connect the black test lead.
µA/mA terminal Connect the red test lead.
A terminal (Only the DT4282)
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Installation in Measurement Location
2.4 Installation in Measurement Location
Using the instrument with the stand
Position the instrument with the stand at the rear.
CAUTION
• Do not position the instrument on an unstable table or inclined surface.
• When the instrument is set on the stand, do not apply a strong force above.
Doing so may damage the stand.
Hanging the instrument with the strap
Attach the optional Z5004 or Z5020 Magnetic Strap to the instrument and attach the magnet to the wall surface (with metal plate affixed).
Example: model Z5004
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Strap holes Magnet
Attach it to the wall surface
(with metal plate affixed).
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Installation in Measurement Location
DANGER
Those with medical electronics such as pacemakers should not use the Z5004 or Z5020 Magnetic Strap.
Nor should such persons approach the Z5004 or
Z5020. It is extremely dangerous. The electronics may not operate properly and the life of the operator may be put at great risk.
CAUTION
• Do not use the Z5004 or Z5020 in locations where it may be exposed to rainwater, dust, or condensation.
In those conditions, the Z5004 or Z5020 may be decomposed or deteriorated. The magnet adhesion may be diminished. In such case, the instrument may not be hung in place and may fall.
• Do not bring the Z5004 or Z5020 near magnetic media such as floppy disks, magnetic cards, pre-paid cards, or magnetized tickets. Doing so may corrupt and may render them unusable. Furthermore, if the Z5004 or
Z5020 is brought near precision electronic equipment such as PCs, TV screens, or electronic wrist watches, they may fail.
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