OPERATING INSTRUCTIONS
DLM-260
DIGITAL LCR METER
SPECIFICATIONS
Display:
3
½
digit liquid crystal display (LCD) with a
maximum reading of 1999.
Polarity:
Automatic, positive implied, negative polarity
indication.
Overrange
: (OL) or (-OL) is displayed.
Zero:
Automatic.
Low battery indication:
The “
” is displayed when the
battery voltage drops below the operating level.
Measurement rate:
2.5 times per second, nominal.
Operating Environment:
0°C to 40°C at <70% R.H.
Storage Temperature:
-20°C to 60°C, 0 to 80% R.H.
with battery removed from meter.
Accuracy:
Stated accuracy at 23°C±5°C, <75% R.H.
Power:
Single standard 9-volt battery, NEDA 1604, JIS
006P, IEC 6F22.
Battery life:
60 hours typical with carbon-zinc.
Dimensions:
200mm (H) x 90mm (W) x 40mm (D).
Weight:
Approx. 14 oz. (400g) including battery.
Accessories:
One pair test leads, one spare fuse installed,
9V battery (installed) and Operating Instructions.
DC VOLTS
Ranges:
20V
Accuracy:
±(2.0%rdg + 1dgt)
Input impedance:
1M
Ω
Overload protection:
25V DC or AC rms
TEMPERATURE
Ranges:
-20°C to 750°C
Resolution:
1°C
Accuracy:
±(2.0%rdg + 3dgts) on -20°C to 500°C
±(3.0%rdg + 2dgts) on 500°C to 750°C
DIODE TEST
Including:
, continuity test
Test current:
1.0mA±0.6mA
Open voltage:
3.0VDC typical
Accuracy:
±(3.0%rdg +1dgt)
Continuity:
<30dgts
Display:
Forward junction voltage
Overload protection:
25V DC or AC rms
SIGNAL OUTPUT
Signal:
+3V, -0.5V square wave, 50% duty
Voltage:
Hi: +5V approx
Lo: -2V approx
Frequency:
2.5KHz square wave
Output impedance:
3.5K
Ω
Overload protection:
25V DC or AC rms
FREQUENCY
(Autoranging)
Ranges:
2KHz, 20KHz, 200KHz, 2000KHz, 15MHz
Accuracy:
±(0.1%rdg +1dgt)
Sensitivity:
1.0Vrms min (TTL signal)
Overload protection:
25V DC or AC rms
CAPACITANCE
Ranges:
200pF, 2nF, 20nF, 200nF, 2µF, 20µF, 200µF,
2000µF, 20mF
Accuracy:
±(2.0%rdg + 30dgts) on 200pF range
±(2.0%rdg + 10dgts) on 2nF to 20µF ranges
±(3.0%rdg + 10dgts) on 200µF to 20mF ranges
Test frequency:
1000Hz on 200pF to 20nF ranges
80Hz on 200nF to 2µF ranges
26Hz on 20µF range
10.5Hz on 200µF to 20mF ranges
Overload protection:
0.1A/250V fast blow fuse
Note: In lower range 200pF, 2nF subtract residual offset
reading from result with test leads opening.
RESISTANCE
Ranges:
200
Ω
, 2K
Ω
, 20K
Ω
, 200K
Ω
, 2000K
Ω
, 20M
Ω
,
200M
Ω
, 2000M
Ω
Resolution:
200
Ω
range 100m
Ω
Accuracy:
±(0.3%rdg + 3dgts) on 200
Ω
range
±(0.3%rdg + 1dgt) on 2K
Ω
to 2000K
Ω
ranges
±(2.0%rdg + 2dgts) on 20M
Ω
range
±[(5.0%rdg - 10dgts) + 10dgts] on 200M
Ω
to 2000M
Ω
ranges
Open circuit volts:
3.0VDC on 200
Ω
, 200M
Ω
, 2000M
Ω
ranges
0.3VDC on other ranges
Overload protection:
25V DC or AC rms
INDUCTANCE
Ranges:
200µH, 2mH, 20mH, 200mH, 2H, 20H
Accuracy:
±(5.0%rdg + 3dgts)
Test frequency:
1000Hz on 200µH to 20mH ranges
80Hz on 200mH to 2H ranges
26Hz on 20H range
Overload protection:
0.1A/250V fast blow fuse
Note: In lower range 200µH, 2mH subtract residual
offset reading from result with test leads being
shorted.
OPERATION
However, electrical noise or intense electromagnetic
fields in the equipment may disturb the measurement cir-
cuit. Measuring instruments will also respond to unwanted
signals that may be present within the measurement circuit.
Users should exercise care and take appropriate precau-
tions to avoid misleading results when making measure-
ments in the presence of electronic interference.
Voltage Measurements
1. Connect the red test lead to the DCV-DIODE-Hz “
+
”
jack and the black test lead to the DCV-DIODE-Hz “
−
”
jack.
2. Set the Function/Range switch to the DC 20V range.
3. Connect the test leads to the device or circuit being
measured.
4. For dc, a (
−
) sign is displayed for negative polarity,
positive polarity is implied.
Temperature Measurements
WARNING
Remove test leads being measured.
1. Set the Function/Range switch to the “°C” position.
2. Connect a type k thermocouple to the jack on the in-
strument. Place the probe or thermocouple tip on or in
the material to be measured and take the temperature
reading directly from the display.
Diode Tests and Continuity Measurements
1. Connect the red test lead to the DCV-DIODE-Hz “+”
jack and the black test lead to the DCV-DIODE-Hz “
−
”
jack.
2. Set the Function/Range switch to the
position.
3. Turn off power to the circuit under test.
4. Touch probes to diodes. A forward-voltage drop on
diode. Microwave diode about 0.6VDC typical.
5. Reverse probes. If the diode is good, display rending
“OL”.
6. If the junction is measured in a circuit and a low reading
is obtained with both lead connections, the junction may
be shunted by a resistance of less than 1k
Ω
. In this case
the diode must be disconnected from the circuit for ac-
curate testing.
7. If display reading <30dgts, the beeper sounds continu-
ously.
Signal Output
1. Set the Function/Range switch to the “
” position.
2. Connect the red test lead to the DCV-DIODE-Hz “+”
jack and the black test lead to the DCV-DIODE-Hz “
−
”
jack.
3. Connect the test leads to the points of signal input.
