Agilent Technologies U1253A Bedienungsanleitung
U1253A Quick Start Guide
Agilent U1253A True RMS OLED Multimeter
Quick Start Guide
The following items are included with your multimeter:
✔Silicone test leads and alligator clips
✔Printed Quick Start Guide
✔CD containing the User’s and Service Guide, application software, and
instrument drivers
✔Rechargeable 7.2 V battery
✔Power cord and AC adapter
✔Certificate of Calibration
If anything is missing or damaged, please contact the nearest Agilent
Sales Office.
WARNING
Ensure the terminal connections are correct for that particular measurement
selection before starting any measurement. To avoid damage to the device, do not
exceed the input limit.
Agilent Technologies
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U1253A Quick Start Guide
Performing Voltage Measurements
Performing Current Measurements
CAUTION
•If the current is ≤ 440 mA, connect the red and black test leads to input terminals
µA.mA (red) and COM (black).
•If the current is > 440 mA, connect the red and black test leads to input terminals
A (red) and COM (black).
Measuring AC voltage
1Set the rotary switch to .
For and mode,
press to ensure is
shown on the display.
2Connect the red and black test
leads to input terminals
V. mV (red) and COM (black)
respectively.
3Probe the test points and read
the display.
4Press to display dual
measurements. Parameter can
be switched consecutively.
Measuring DC voltage
1Set the rotary switch to
or . Ensure that is
shown on the display.
2Connect the red and black test
leads to input terminals
V. mV (red) and COM (black)
respectively.
3Probe the test points and read
the display.
4Press to display dual
measurements. Parameter can
be switched consecutively.
Measuring AC current
1Set the rotary switch to
or . Press to
ensure is shown on the
display.
2Connect the red and black test
leads to input terminals
µA.mA (red) and COM (black) or
A (red) and COM (black)
respectively.
3Probe the test points in series
with the circuit and read the
display.
Measuring DC current
1Set the rotary switch to
or . Ensure that is
shown on the display.
2Connect the red and black test
leads to input terminals
µA.mA (red) and COM (black) or
A (red) and COM (black)
respectively.
3Probe the test points in series
with the circuit and read the
display.
U1253A QSG.fm Page 2 Tuesday, September 23, 2008 9:44 AM
U1253A Quick Start Guide
Performing Resistance, Conductance, and Continuity
Measurements
Performing Capacitance and Temperature Measurements
1Set the rotary switch to .
2Connect the red and black test
leads to input terminals
Ω(red) and COM (black)
respectively.
3Probe the test points (by
shunting the resistor) and read
the display.
4Press to scroll through
audible continuity ( / ),
conductance ( ), and
resistance tests ( , , or
) as shown.
PRESS SHIFT
PRESS SHIFT
Audible
continuity
Capacitance
1Set the rotary switch to .
2Connect the red and black test
leads to input terminals
(red) and COM (black)
respectively.
3Connect the red test lead to
the positive terminal of the
capacitor, and the black test
lead to the negative terminal.
4Read the display.
Temperat ure
1Set the rotary switch to .
Press to select
temperature measurement.
2Connect the red and black test
leads to input terminals
(red) and COM (black)
respectively.
3Plug the thermocouple adapter
(with the thermocouple probe
connected to it) into input
terminals TEMP (red) and COM
(black).
4Touch the measurement
surface with the thermocouple
probe.
5Read the display.
U1253A QSG.fm Page 3 Tuesday, September 23, 2008 9:44 AM
U1253A Quick Start Guide
Frequency and Frequency Counter Measurements
Frequency Measurement
During AC/DC voltage or AC/DC current measurements, you can measure the signal
frequency by pressing at any time.
Frequency Counter Measurement
1Set the rotary switch to .
2Press to select the frequency counter ( ) function. The
default input signal frequency is divided by 1. This allows signals
up to a maximum frequency of 985 kHz to be measured.
3Connect the red and black test leads to input terminals V (red) and
COM (black) respectively.
4Probe the test points and read the display.
5If the reading is unstable or zero, press to select division of
input signal frequency by 100 ( will be shown on the display).
This accommodates a higher frequency range of up to 20 MHz.
6The signal is out of the U1253A frequency measurement range of
20 MHz if the reading is still unstable after Step 5.
Square Wave Output
1Turn the rotary switch to .
2Press to select duty cycle (%) on the primary display.
3The default square wave frequency is 600 Hz as shown by the
secondary display, with a 50% duty cycle as shown by the primary
display.
4Press or to scroll through the available frequencies (there are
28 frequencies to choose from).
5Press or to adjust the duty cycle. The duty cycle can be set
from 0.390625% to 99.609375%, in steps of 0.390625%. The displayed
duty cycle has a resolution of 0.001%.
WARNING
Use the frequency counter for low voltage applications. Never use the frequency
counter on AC power line systems.
U1253A QSG.fm Page 4 Tuesday, September 23, 2008 9:44 AM
U1253A Quick Start Guide
Functions and Features
Input Terminals and Overload Protection
Action Steps
Changes the OLED brightness Press .
Freezes the measured value Press .
Starts MIN|MAX|AVG|NOW
recording
Press and hold for > 1 s.
Offsets the measured value Press .
Changes the measurement
range
Press .
Turns on auto range Press and hold for > 1 s.
Turns on dual display Press .
Starts manual data logging Press and hold for > 1 s.
Views the logged data Press for > 1 s, press or
to scroll through the logged
data.
Clears the logged data Press for > 1 s, press
for > 1 s.
Measurement Functions Input Terminal Overload Protection
Voltage
COM
1000 Vrms
Diode
1000 Vrms
< 0.3 A short circuit current
Resistance
Capacitance
Te m p e r at u r e
Current (μA and mA) µA.mA COM 440 mA/1000 V 30 kA/fast-acting fuse
Current (A) ACOM 11 A/1000 V 30 kA/fast-acting fuse
U1253A QSG.fm Page 5 Tuesday, September 23, 2008 9:44 AM
Tilt Stand
Safety Information
Tilt stand at 60°Tilt stand at 30°
This meter is safety-certified in compliance with
EN/IEC 61010-1:2001, UL 61010-1 Second Edition and
CAN/CSA 22.2 61010-1 Second Edition,
Category III
1000 V, Pollution Degree II. Use with standard or
compatible test probes.
Safety Notices
A CAUTION notice denotes a hazard. It calls
attention to an operating procedure, practice, or
the like that, if not correctly performed or adhered
to, could result in damage to the product or loss of
important data. Do not proceed beyond a
CAUTION notice until the indicated conditions are
fully understood and met.
WARNING
A WARNING notice denotes a hazard. It calls atten-
tion to an operating procedure, practice, or the like
that, if not correctly performed or adhered to, could
result in personal injury or death. Do not proceed
beyond a WARNING notice until the indicated condi-
tions are fully understood and met.
Safety Symbols
CAT III
1000 V Category III 1000 V overvoltage protection
Double insulation
Earth ground
Caution, risk of danger
Caution, risk of electric shock
For further safety information details, refer to the Agilent U1253A True RMS OLED
Multimeter User’s and Service Guide.
© Agilent Technologies, Inc., 2008
First Edition, October 1, 2008
U1253-90011
Agilent Technologies
U1253A QSG.fm Page 6 Tuesday, September 23, 2008 9:44 AM
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