Opal DT-916N User manual

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English
OPERATING INSTRUCTION
AUTORANGING MULTIMETER DT-916N
SAFETY INFORMATION
The following safety information must be
observed to insure maximum personal
safety during the operation at this meter:
zDo not use the meter if the meter
or test leads look damaged, or if
you suspect that the meter is not
operating properly.
zNever ground yourself when taking
electrical measurements. Do not
touch exposed metal pipes, outlets,
fixtures, etc., which might be at
ground potential. Keep your body
isolated from ground by using dry
clothing, rubber shoes, rubber mats, or any approved
insulating material.
zTurn off power to the circuit under test before cutting,
unsoldering, or breaking the circuit. Small amounts of current
can be dangerous.
zUse caution when working above 60V dc or 30V ac rms. such
voltages pose a shock hazard.
zWhen using the probes, keep your fingers behind the finger
guards on the probes.
zMeasuring voltage which exceeds the limits of the multi-meter
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may damage the meter and expose the operator to a shock
hazard. Always recognize the meter voltage limits as stated on
the front of the meter.
zNever apply voltage or current to the meter that exceeds the
specified maximum:
Input Limits
Function Maximum Input
V DC or V AC 600VDC,
600V AC
mA DC/AC 400mA DC/AC
A DC/AC 10A DC/AC (30 seconds
max every 15 minutes)
Frequency,Resistance,
Capacitance,Duty Cycle, Diode
test, Continuity
250V DC/AC
Temperature 250V DC/AC
SAFETY SYMBOLS
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eter.
jury.
This symbol adjacent to another symbol, terminal or
operating device indicates that the operator must
refer to an explanation in the Operating Instructions to
avoid personal injury or damage to the m
This WARNING symbol indicates a potentially
hazardous situation, which if not avoided, could
result in death or serious in
This CAUTION symbol indicates a potentially
hazardous situation, which if not avoided, may result

damage to the product.
MA
X
This symbol advises the user that the terminal(s) so
marked must not be connected to a circuit point at
which the voltage with respect to earth ground
exceeds (in this case) 500 VAC or VDC.
This symbol adjacent to one or more terminals
identifies them as being associated with ranges that
may, in normal use, be subjected to particularly
hazardous voltages. For maximum safety, the meter
and its test leads should not be handled when these
terminals are energized.
CONTROLS AND JACKS
1. 4000 count Liquid Crystal Display with symbolic signs
2. Function switch
3. 10A (positive) input
jack for 10A DC or AC
measurements
4. COM (negative) input jack
5. Positive input jack
6. MODE pushbutton
7. Range pushbutton
8.
Data Hold/Back Light pushbutton
9. Relative pushbutton
10. Battery Cover
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SYMBOLS AND ANNUNCIATORS
Continuity DATA
HOLD
Data Hold
BAT Low Battery AUTO AutoRanging
Diode AC Alternating
Current or
Voltage
DC Direct
Current or
Voltage
SPECIFICATIONS
The instrument complies with: EN61010-1.
Insulation: Class2, Double insulation.
Overvoltage category: CATIII 600V.
Display: 4000 counts LCD display with function indication.
Polarity: Automatic, (-) negative polarity indication.
Overrange: “OL” mark indication.
Low battery indication: The “BAT” is displayed when the battery
voltage drops below the operating level.
Measurement rate: 2 times per second, nominal.
Auto power off: Meter automatically shuts down after approx. 30
minutes of inactivity.
Operating environment: 0 ℃to 50 ℃(32 ℉to 122 ℉at < 70
% relative humidity.
For inside use, max height: 2000m
Pollution degree: 2
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Power: One 9V battery , NEDA 1604, IEC 6F22.
Dimensions: 138 (H) x 68 (W) x 37 (D) mm
Weight: Approx.: 210g.
Accuracy is given at 18 ℃ to 28 ℃ (65 ℉ to 83 ℉ ), less than 70 % RH
Audible continuity
Audible threshold: Less than 150 Test current: <0.3mA
Overload protection: 250V dc or ac rms.
OPERATION
WARNING: Risk of electrocution. High-voltage circuits, both AC
and DC, are very dangerous and should be measured with
great care.
1.ALWAYS turn the function switch to the OFF position when the
meter is not in use. This meter has Auto OFF that automatically
shuts the meter OFF if 30minutes elapse between uses.
2.If “OL” appears in the display during a measurement, the value
exceeds the range you have selected. Change to a higher range.
NOTE: On some low AC and DC voltage ranges, with the test leads
not connected to a device, the display may show a random,
changing reading. This is normal and is caused by the high-input
sensitivity. The reading will stabilize and give a proper
measurement when connected to a circuit.
MODE BUTTON
To select Ohm/Diode/Continuity/Cap , DC/AC, Hz/%Duty
RANGE BUTTON

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When the meter is first turned on, it automatically goes into
AutoRanging. This automatically selects the best range for the
measurements being made and is generally the best mode for most
measurements. For measurement situations requiring that a range
be manually selected, perform the following:
1. Press the RANGE button. The “AUTO” display indicator
will turn off.
2.Press the RANGE button to step through the available
ranges until you select the range you want.
3.Press and hold the RANGE button for 2 seconds to
exit the ManualRanging mode and return to AutoRanging.
DATA HOLD BUTTON
The Data Hold function allows the meter to "freeze" a measurement
for later reference.
1.Press the DATA HOLD button to “freeze” the reading on the
indicator. The indicator “HOLD” will be appear in the display.
2.Press the DATA HOLD button to return to normal operation.
Backlight
Press and hold the HOLD key for >1 second to turn on or off the
display backlight function.
Note: The HOLD feature will activate when the Backlight is turned
on. Press the HOLD key again to exit Hold.
RELATIVE BUTTON
The relative measurement feature allows you to make
measurements relative to a stored reference value. A reference
voltage, current, etc. can be stored and measurements made in

comparison to that value. The displayed value is the difference
between the reference value and the measured value.
1. Perform any measurement as described in the operating
instructions.
2. Press the RELATIVE button to store the reading in the display
and the "REL" indicator will appear on the display.
3. The display will now indicate the difference between the stored
value and the measured value.
4. Press the RELATIVE button to return to normal operation.
Non-Contact AC Voltage Measurements
WARNING: Risk of Electrocution. Before use,
always test the Voltage Detector on a known live
circuit to verify proper operation
1. Touch the probe tip to the hot conductor or insert into the hot
side of the electrical outlet.
2. If AC voltage is present, the detector light will illuminate.
NOTE: The conductors in electrical cord sets are often twisted.
For best results, rub the probe tip along a length of the
cord to assure placing the tip in close proximity to the live
conductor.
NOTE: The detector is designed with high sensitivity. Static
electricity or other sources of energy may randomly trip
the sensor. This is normal operation
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DC VOLTAGE MEASUREMENTS
CAUTION: Do not measure DC voltages if a motor on the
circuit is being switched ON or OFF. Large voltage surges may
occur that can damage the meter.
1. Set the function switch to the V DC position .
2. Insert the black test lead banana plug into the negative (COM)
jack and the red test lead banana plug into the positive (V) jack.
3. Touch the test probe tips to the circuit under test. Be sure to
observe the correct polarity (red lead to positive, black lead to
negative).
4. Read the voltage in the display. The display will indicate the
proper decimal point and value. If the polarity is reversed, the
display will show (-) minus before the value.
AC VOLTAGE MEASUREMENTS
WARNING: Risk of Electrocution. The probe tips may not be
long enough to contact the live parts inside some 240V outlets
for appliances because the contacts are recessed deep in the
outlets. As a result, the reading may show 0 volts when the
outlet actually has voltage on it. Make sure the probe tips are
touching the metal contacts inside the outlet before assuming
that no voltage is present.
CAUTION: Do not measure AC voltages if a motor on the
circuit is being switched ON or OFF. Large voltage surges may
occur that can damage the meter.

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1. Set the function switch to the V AC position.
2. Insert the black test lead banana plug into the negative (COM)
jack and the red test lead banana plug into the positive (V) jack.
3. Touch the test probe tips to the circuit under test.
4. Read the voltage in the display. The display will indicate the
proper decimal point, value and symbol (AC, V, etc.).
DC CURRENT MEASUREMENTS
CAUTION: Do not make current measurements on the 10A
scale for longer than 30 seconds. Exceeding 30 seconds may
cause damage to the meter and/or the test leads.
1. Insert the black test lead banana plug into the negative (COM)
jack.
2. For current measurements up to 4000μA DC, set the function
switch to the μA position and insert the red test lead banana
plug into the (μA) jack.
3. For current measurements up to 400mA DC, set the function
switch to the mA range and insert the red test lead banana plug
into the (mA) jack.
4. For current measurements up to 10A DC, set the function switch
to the A position and insert the red test lead banana plug into
the 10A jack.
5. Press the AC/DC button until “DC” appears in the display.
6. Remove power from the circuit under test, then open up the
circuit at the point where you wish to measure current.
7. Touch the black test probe tip to the negative side of the circuit.
Touch the red test probe tip to the positive side of the circuit.