HP U1270

Agilent U1270 Series Handheld
Digital Multimeters
Shaped to fit, tailored to perform, built to last
Data Sheet
Features
• Intelligent features:
ZLOW*, Smart Ω*, Low Pass Filter,
Qik-V**
• Visual (Backlight Alert) and
audible continuity indication in
noisy environments
• Ergonomic shape for better grip
• IP 54 certified – water and dust
resistant
• Easy-to-operate large knob and
buttons
• 30,000-count dual display
• AC + DC capability*
• CAT III 1000 V, CAT IV 600 V
safety rating
• Easy maintenance – convenient
fuse access
• Easy connectivity to PC with
optional IR-USB cable
• Internal memory for data logging
* U1272A only
** U1271A only
Get a better grip on your
DMM
The U1270 series is shaped perfectly to fit in
your hand, with or without gloves on. Its nonslip ergonomic shape enables you to carry
your DMM and perform measurements on the
go easily. Additionally, the controls are easy to
operate due to the large knob and buttons.
Improve productivity with
intelligent features
Designed for maximum efficiency and
productivity in industrial settings, these
DMMs offer convenient functions such as
ZLOW to eliminate stray voltages, Smart Ω
to minimize false readings due to leakage
current and Qik-V to determine existence
of AC and/or DC voltages.
Continuity detection in noisy and dark places
is made easy with the U1270 series’ loud
beeper and Backlight Alert function which
flashes the backlight to indicate continuity
and improve safety.
When it comes to Variable Frequency Drive
(VFD) troubleshooting, the U1270 series has
Low Pass Filter to handle the job with ease.
Water and dust resistant
The series’ tightly sealed design helps protect
against water, dust and damage. Each DMM
is IP 54 certified so that you can carry out test
and measurement with confidence, even in
harsh working conditions.
Key functions
Low Impedance (ZLOW)
The U1272A is a dual input impedance digital multimeter. The DMM’s high input impedance is preferred in most electrical
measurements because it would not load the circuit under test. However, to obtain accurate measurements on circuits
that may contain stray voltages, the U1272A’s 2 kΩ low impedance function comes in handy. Stray voltages are usually
found in non-energized electrical wiring adjacent to powered wires due to capacitive or inductive coupling between these
wires. When a pair of test leads is placed between the open circuit and neutral conductor, the circuit is then complete
and forms a voltage divider in conjunction with the input impedance of the multimeter. High input impedance multimeter
is sensitive enough to measure voltage coupled into the disconnected conductor, thus giving an inaccurate indication of
a live conductor. The low impedance function serves to eliminate false readings by dissipating the stray voltages, thus
improves safety and measurement efficiency during voltage.
Figure 1: U1272A helps you identify the presence of stray voltage on a disconnected wire running parallel with the wire
powering up the VFD to an industrial motor. The image on the right shows the U1272A in low impedance mode.
Low Pass Filter (LPF)
The U1270 series offers a 1 kHz LPF or Low Pass Filter to provide accurate Variable Frequency Drive (VFD) output
measurement. This function eliminates high frequency noise and harmonics. This ensures the efficiency of your motor
filter as well.
Figure 2: Comparison of voltage output from industrial motor VFD without and with Low Pass Filter functionality.
Smart Ω
The U1272A provides an additional 30 Ohm range for low resistance measurement. This Smart Ω function is available
for ranges of 30 Ohm to 300 kOhm. It enhances measurement accuracy with offset compensation by removing residual
DC voltages of up to 1000 mV induced by ground current and thermal EMF. This function also enables ‘live’ resistance
measurement without isolating the measurement circuit. With this, you will be able to obtain leakage current using the
secondary display.
2
Front and back panel description
Dual display
Backlight Alert flashes the
backlight to provide visual
indication in continuity test
30,000 counts resolution
Large buttons
Peak detect records
transients as fast as 250µs
Smart Ω** removes residual
voltage of up to 1000 mV
Low Pass Filter (LPF)
removes unwanted high
frequency signals
Auto diode** automatically
determines diode polarity
Temperature measurement:
J type thermocouple
-200 to 1200 °C**, K type
thermocouple -200 to 1732 °C
ZLOW** provides both high
and low impedance modes
to eliminate stray voltages
AC + DC** capability
Large knob for ease of use
Qik-V* allows AC+DC
measurement to quickly
check for energized voltage
Front panel
3
* U1271A only
** U1272A only
Hang hole
Probe holder/storage
IR-USB connectivity with
optional IR-USB cable
Slim, ergonomic design for
better grip
Easy fuse and battery
access from battery cover
beneath the stand
Back panel
4
Choose between these two models
Di
U1271A
U1272A
30,000
30,000
Yes
Yes
Basic Features
Display resolution
Auto/manual ranging
Analog bar graph
Yes
Yes
Backlight
Yes
Yes
20 kHz
100 kHz
AC
AC + DC
AC bandwidth
True RMS
Measurements
Voltage DC
Range
Accuracy
300 mV to 1000 V
0.05% + 2 cnts
30 mV to 1000 V
0.05% + 2 cnts
Voltage AC
Range
Accuracy
Bandwidth
300 mV to 1000 V
0.7% + 20 cnts
45 Hz to 20 kHz
30 mV to 1000 V
0.6% + 20 cnts
45 Hz to 100 kHz
Current DC
Range
Accuracy
300 µA to 10 A
0.2% + 5 cnts
300 µA to 10 A
0.2% + 5 cnts
Current AC
Range
Accuracy
Bandwidth
300 µA to 10 A
0.9% + 25 cnts
45 Hz to 2 kHz
300 µA to 10 A
0.6% + 25 cnts
45 Hz to 2 kHz
Resistance
Range
Accuracy
300 Ω to 100 MΩ
0.2 % + 5 cnts
30 Ω to 300 MΩ
0.2% + 5 cnts
Frequency
Range
Accuracy
99.999 Hz to 999.99 kHz
0.005% + 5 cnts
99.999 Hz to 999.99 kHz
0.005% + 5 cnts
Capacitance
Range
Accuracy
10 nF to 10 mF
1% + 2 cnts
10 nF to 10 mF
1% + 2 cnts
Range
Accuracy
K: -200 to 1372 °C
1% + 1°C
K: -200 to 1372 °C
J: -200 to 1200 °C
1% + 1 °C
Temperature
Continuity with beeper
Yes
Yes
Diode test
Yes
Yes
Data Management
Min/Max Recording
Yes
Yes
Display Hold
Yes
Yes
Peak Hold
Yes
Yes
Manual Datalogging
Yes
Yes
Null
Yes
Yes
IR-USB
IR-USB
Yes
Yes
PC Connectivity
% scale of 4-20 mA
5
Di
U1271A
U1272A
Beep + Backlight Alert
Yes
Yes
Low Pass Filter (LPF)
Yes
Yes
Special Features
ZLOW - Low impedance mode
-
Yes
Smart Ω
-
Yes
Yes
-
CAT III 1000 V, CAT IV 600 V
CAT III 1000 V, CAT IV 600 V
Yes
Yes
4x AAA
4x AAA
Qik-V
Safety and Regulatory
Over-voltage safety protection
EN/IEC 61010-1:2001 compliance
General
Battery
Operating temperature
-20 °C to 55 °C, 0 to 80% R.H
-20 °C to 55 °C, 0 to 80% R.H
Standard Accessories
Standard test leads, test probes with 19mm and 4-mm tips, K-type thermocouple
and adapter, 4x AAA batteries, Certificate
of Calibration, test report, Quick Start
Guide
Standard test leads, test probes with 19mm and 4-mm tips, K-type thermocouple
and adapter, 4x AAA batteries, Certificate
of Calibration, test report, Quick Start
Guide
6
General Specifications
Display
Power consumption
Battery Type
Liquid crystal display (LCD) (with maximum reading of 33000 counts)
460 mVA maximum (with backlight enabled)
• 4 × 1.5 V Alkaline battery (ANSI/NEDA 24A or IEC LR03), or
• 4 × 1.5 V Zinc Chloride battery (ANSI/NEDA 24D or IEC R03)
Battery Life
• 300 hours typical (based on new Alkaline batteries for dc voltage measurement)
• Low battery indicator will flash when the battery voltage drops below 4.4 V (approximately)
Fuse
• 10 × 35 mm 440 mA/1000 V 30 kA fast-acting fuse
• 10 × 38 mm 11 A/1000 V 30 kA fast-acting fuse
Operating Environment
• Operating temperature from –20 to 55 °C, 0 to 80% RH
• Full accuracy up to 80% RH for temperatures up to 30 °C, decreasing linearly to 50%
RH at 55 °C
• Altitude up to 2000 meters
• Pollution degree II
Storage Compliance
Safety Compliance
–40 to 70 °C, 0 to 80% RH
• CAN/CSA-C22.2 No. 61010-1-04
• EN/IEC 61010-1:2001
• ANSI/UL 61010-1:2004
Measurement Category
Electromagnetic Compatibility
(EMC)
Ingress Protection Rating
Temperature Coefficient
Common Mode Rejection Ratio
(CMRR)
Normal Mode Rejection Ration
(NMRR)
Dimensions (W x H x D)
Weight
CAT III 1000 V/ CAT IV 600 V
Commercial limits compliance with EN61326-1
IP-54
0.05 × (specified accuracy) / °C (from –20 to 18 °C, or 28 to 55 °C)
>120 dB at DC, 50/60 Hz ± 0.1% (1 kΩ unbalanced)
>60 dB at 50/60 Hz ± 0.1%
92 × 207 × 59 mm
• U1271A: 518 grams (with batteries)
• U1272A: 520 grams (with batteries)
Warranty
• Three years for product
• Three months for product’s accessories
Calibration Cycle
One year
Specification Assumptions
•
Accuracy is given as ±(% of reading + counts of least significant digit) at 23 °C ± 5 °C, with relative humidity less than 80% RH.
•
AC V and AC μA/mA/A specifications are ac coupled, true RMS and are valid from 5% of range to 100% of range.
•
The crest factor may be up to 3.0 at full- scale except for the 1000 V range where it is 1.5 at full scale.
•
For non- sinusoidal waveforms, add (2% reading + 2% full scale) typical, for crest factors up to 3.
•
After ZLOW voltage measurements, wait at least 20 minutes for thermal impact to cool before proceeding with any other measurement.
7
Electrical specifications
DC specifications for U1271A and U1272A
Function
Voltage [1]
Range
Accuracy ±(% of reading +
Resolution counts of least significant digit)
U1271A
U1272A
30 mV
0.001 mV
-
0.05 + 20
300 mV
0.01 mV
0.05 + 5
0.05 + 5
-
3V
0.0001 V
0.05 + 5
0.05 + 5
-
30 V
0.001 V
0.05 + 2
0.05 + 2
-
300 V
0.01 V
0.05 + 2
0.05 + 2
-
1000 V
0.1 V
0.05 + 2
0.05 + 2
-
-
1 + 20
ZLOW (low input impedance)
enabled, applicable for 1000 V
range and resolution only.
Resistance [2]
Current [3]
Diode Test [4]
Test current/
Burden voltage
30 Ω
0.001 Ω
-
0.2 + 10
0.65 mA
300 Ω
0.01 Ω
0.2 + 5
0.2 + 5
0.65 mA
3 kΩ
0.0001 kΩ
0.2 + 5
0.2 + 5
65 mA
30 kΩ
0.001 kΩ
0.2 + 5
0.2 + 5
6.5 mA
300 kΩ
0.01 kΩ
0.5 + 5
0.5 + 5
0.65 mA
3 MΩ
0.0001 MΩ
0.6 + 5
0.6 + 5
93 nA//10 MΩ
30 MΩ
0.001 MΩ
1.2 + 5
1.2 + 5
93 nA//10 MΩ
100 MΩ
-
2.0 +10
-
93 nA//10 MΩ
93 nA//10 MΩ
300 MΩ
0.01 MΩ
-
2.0 % + 10 @ <100 MΩ
8.0 % + 10 @ >100 MΩ
300 nS
0.01 nS
1 + 10
1 + 10
93 nA//10 MΩ
300 µA
0.01 µA
0.2 + 5
0.2 + 3
<0.04 V/ 100 Ω
3000 µA
0.1 µA
0.2 + 5
0.2 + 3
<0.4 V/ 100 Ω
30 mA
0.001 mA
0.2 + 5
0.2 + 3
<0.08 V/ 1 Ω
300 mA
0.01 mA
0.2 + 5
0.2 + 3
<1.00 V/ 1 Ω
3A
0.0001 A
0.3 +10
0.3 +10
<0.1 V/ 0.01 Ω
10 A
0.001 A
0.3 +10
0.3 +10
<0.3 V/ 0.01 Ω
3V
0.0001 V
0.5 + 5
0.5 + 5
Approximately 1 to 2 mA
Auto
0.0001 V
-
0.5 + 5
Approximately 0.1 to 0.3 mA
1. Notes for voltage specifications:
• The accuracy of the 30 to 300 mV range is specified after the Null function is used to subtract the thermal effect (by shorting the test leads).
•
For ZLOW measurements, autoranging is disabled and the multimeter’s range is set to 1000 volts in the manual ranging mode.
2. Notes for resistance specifications:
• Overload protection: 1000 Vrms for short circuits with <0.3 A current.
• Maximum open voltage is <+3.3 V
• Built-in buzzer beeps when the resistance measured is less than 25 Ω ± 10 Ω. The multimeter can capture intermittent measurements longer
than 1 ms.
• The accuracy of the 300 Ω to 3 kΩ range is specified after the Null function is used to subtract the test lead resistance and thermal effect (by
shorting the test leads).
• For the ranges of 30 MΩ and 100 MΩ, the RH is specified for <60%.
• The accuracy for ranges <50 nS is specified after the Null function is used on an open test lead.
•
The temperature coefficient of the 100 MΩ and 300 MΩ range is 0.1 × (specified accuracy)/°C (from -20 °C to 18 °C or 28 °C to 55 °C)
8
3.
Notes for current specifications:
• Overload protection for 300 μA to 300 mA range: 0.44 A/1000 V; 10 × 35 mm 30 kA fast-acting fuse
• Overload protection for 3 A to 10 A range: 11 A/1000 V; 10 × 38 mm 30 kA fast-acting fuse
• Specification for 300 mA range: 440 mA continuous.
• Specification for 10 A range: 10 A continuous. Add 0.3% to the specified accuracy when measuring signals >10 to 20 A for 30 seconds
maximum. After measuring currents >10 A, cool down the multimeter for twice the duration of the mea-sured time before proceeding with low
current measurements.
Notes for diode specifications:
• Overload protection: 1000 Vrms for short circuits with <0.3 A current.
• Built-in buzzer beeps continuously when the voltage measured is less than 50 mV and beeps once for forward-biased di-ode or semiconductor
junctions measured between 0.3 V and 0.8 V (0.3 V ≤ reading ≤ 0.8 V).
• Open voltage for diode: <+3.3 V DC
• Open voltage for Auto diode: <+2.5 V DC and > -1.0 V DC
4.
AC specifications for U1271A
Accuracy
Function
True RMS AC
Voltage [1]
Range
Resolution
45 Hz to
65 Hz
30 Hz to 1 kHz
300 mV
0.01 mV
0.7 + 20
1.0 + 25
2.0 + 25
2.0 + 40
3V
0.0001 V
0.7 + 20
1.0 + 25
2.0 + 25
2.0 + 40
30 V
0.001 V
0.7 + 20
1.0 + 25
2.0 + 25
2.0 + 40
300 V
0.01 V
0.7 + 20
1.0 + 25
2.0 + 25
-
1000 V
0.1 V
0.7 + 20
1.0 + 25
-
-
1.0 + 25 @ <200 Hz
5.0 + 25 @ <440 Hz
-
-
LPF (low pass filter)
enabled, applicable for
all voltage ranges and
resolution
Function
True RMS AC
Current [2]
1.
2.
1 kHz to 5 kHz to
5 kHz
20 kHz
0.7 + 20
Range
Resolution
Accuracy
45 Hz to 2 kHz
Burden voltage/Shunt
300 µA
0.01 µA
0.9 + 25
<0.04 V/ 100 Ω
3000 µA
0.1 µA
0.9 + 25
<0.4 V/ 100 Ω
30 mA
0.001 mA
0.9 + 25
<0.08 V/ 1 Ω
300 mA
0.01 mA
0.9 + 25
<1.00 V/ 1 Ω
3A
0.0001 A
1.0 + 25
<0.1 V/ 0.01 Ω
10 A
0.001 A
1.0 + 25
<0.3 V/ 0.01 Ω
Notes for voltage specifications:
•
Overload protection: 1000 Vrms. For millivolt measurements, 1000 Vrms for short circuits with <0.3 A current.
•
Input impedance: 10 MΩ (nominal) in parallel with <100 pF.
Notes for current specifications:
•
Overload protection for 300 μA to 300 mA range: 0.44 A/1000 V; 10 × 35 mm 30 kA fast-acting fuse
•
Overload protection for 3 A to 10 A range: 11 A/1000 V; 10 × 38 mm 30 kA fast-acting fuse
•
Specification for 300 mA range: 440 mA continuous.
•
Specification for 10 A range: 10 A continuous. Add 0.3% to the specified accuracy when measuring signals >10 to 20 A for 30 seconds
maximum. After measuring currents >10 A, cool down the multimeter for twice the duration of the measured time before proceeding with low
current measurements.
9
AC specifications for U1272A
Accuracy
Function
True RMS AC
Voltage [1]
Function
True RMS
AC Current
[2]
20 kHz
to 100
kHz
Range
Resolution
45 to
65 Hz
20 Hz to 1
kHz
30 mV
0.001 mV
0.6 + 20
0.7 + 25
1.0 + 25
1.0 + 40
3.5 + 40
300 mV
0.01 mV
0.6 + 20
0.7 + 25
1.0 + 25
1.0 + 40
3.5 + 40
3V
0.0001 V
0.6 + 20
1.0 + 25
1.5 + 25
2.0 + 40
3.5 + 40
30 V
0.001 V
0.6 + 20
1.0 + 25
1.5 + 25
2.0 + 40
3.5 + 40
300 V
0.01 V
0.6 + 20
1.0 + 25
1.5 + 25
2.0 + 40
-
1000 V
0.1 V
1 kHz to 5 kHz to
5 kHz
20 kHz
0.6 + 20
1.0 + 25
1.5 + 25
-
-
LPF (low pass filter)
enabled, applicable for
all voltage ranges and
resolution
0.6 + 20
1.0 + 25 @
<200 Hz
5.0 + 25 @
<440 Hz
-
-
-
ZLOW 1000 V
2.0 + 40
2 + 40 @
<440 Hz
-
-
-
Accuracy
20 Hz
45 to
to
65 Hz
2 kHz
Burden
voltage/
Shunt
Range
Resolution
300 µA
0.01 µA
0.6 + 25
0.9 + 25
<0.04 V/ 100 Ω
3000 µA
0.1 µA
0.6 + 25
0.9 + 25
<0.4 V/ 100 Ω
30 mA
0.001 mA
0.6 + 25
0.9 + 25
<0.08 V/ 1 Ω
300 mA
0.01 mA
0.6 + 25
0.9 + 25
<1.00 V/ 1 Ω
3A
0.0001 A
0.8 + 25
1.0 + 25
<0.1 V/ 0.01 Ω
10 A
0.001 A
0.8 + 25
1.0 + 25
<0.3 V/ 0.01 Ω
1. Notes for voltage specifications
•
Overload protection: 1000 Vrms. For millivolt measurements, 1000 Vrms for short circuits with <0.3 A current.
•
Input impedance: 10 MΩ (nominal) in parallel with <100 pF.
•
ZLOW impedance: 2 kΩ (nominal)
•
The input signal is lower than the product of 20,000,000 V×Hz.
•
For 20 to 100 kHz accuracy: Three counts of the LSD per kHz of additional error is to be added for frequencies >20 kHz and signal inputs <10%
of range.
2. Notes for current specifications
•
Overload protection for 300 μA to 300 mA range: 0.44 A/1000 V; 10 × 35 mm 30 kA fast-acting fuse
•
Overload protection for 3 A to 10 A range: 11 A/1000 V; 10 × 38 mm 30 kA fast-acting fuse
•
Specification for 300 mA range: 440 mA continuous.
•
Specification for 10 A range: 10 A continuous. Add 0.3% to the specified accuracy when measuring signals >10 to 20 A for 30 seconds
maximum. After measuring currents >10 A, cool down the multimeter for twice the duration of the measured time before proceeding with low
current measurements.
10
AC + DC specifications for U1272A
Accuracy
Function
True RMS
AC + DC
Voltage [1]
Function
Range
20 kHz
to 100
kHz
30 mV
0.001 mV
0.7 + 40
0.8 + 45
1.1 + 45
1.1 + 60
3.6 + 60
300 mV
0.01 mV
0.7 + 25
0.8 + 30
1.1 + 30
1.1 + 45
3.6 + 45
3V
0.0001 V
0.7 + 25
1.1 + 30
1.6 + 30
2.1 + 45
3.6 + 45
30 V
0.001 V
0.7 + 25
1.1 + 30
1.6 + 30
2.1 + 45
3.6 + 45
300 V
0.01 V
0.7 + 25
1.1 + 30
1.6 + 30
2.1 + 45
-
1000 V
0.1 V
0.7 + 25
1.1 + 30
1.6 + 30
-
-
Range
300 µA
True RMS
AC + DC
Current [2]
Resolution 45 Hz to 20 Hz to 1 kHz to 5 kHz to
65 Hz
2 kHz
5 kHz
20 kHz
Accuracy
Resolution 45 Hz to 20 Hz to
65 Hz
2 kHz
Burden
voltage/
Shunt
0.01 µA
0.8 + 30
1.1 + 30
<0.04 V/100 Ω
3000 µA
0.1 µA
0.8 + 30
1.1 + 30
<0.4 V/100 Ω
30 mA
0.001 mA
0.8 + 30
1.1 + 30
<0.08 V/1 Ω
300 mA
0.01 mA
0.8 + 30
1.1 + 30
<1.00 V/1 Ω
3A
0.0001 A
0.9 + 35
1.3 + 35
<0.1 V/0.01 Ω
10 A
0.001 A
0.9 + 35
1.3 + 35
<0.3 V/0.01 Ω
1. Notes for voltage specifications:
•
Overload protection: 1000 Vrms. For millivolt measurements, 1000 Vrms for short circuits with <0.3 A current.
•
Input impedance: 10 MΩ (nominal) in parallel with <100 pF.
•
For 20 to 100 kHz accuracy: Three counts of the LSD per kHz of additional error is to be added for frequencies >20 kHz and signal inputs <10%
of range.
2. Notes for current specifications:
•
Overload protection for 300 μA to 300 mA range: 0.44 A/1000 V; 10 × 35 mm 30 kA fast-acting fuse
•
Overload protection for 3 A to 10 A range: 11 A/1000 V; 10 × 38 mm 30 kA fast-acting fuse
•
Specification for 300 mA range: 440 mA continuous.
•
Specification for 10 A range: 10 A continuous. Add 0.3% to the specified accuracy when measuring signals >10 to 20 A for 30 seconds
maximum. After measuring currents >10 A, cool down the multimeter for twice the duration of the measured time before proceeding with low
current measurements.
11
Temperature specifications [1] - [6]
Thermocouple type
K
J
1.
Range
Resolution
-200 to 1372 °C
Accuracy
U1271A
U1272A
0.1 °C
1% + 1 °C
1% + 1 °C
-328 to 2502 °F
0.1 °F
1% + 1.8 °F
1% + 1.8 °F
-200 to 1200 °C
0.1 °C
-
1% + 1 °C
-328 to 2192 °F
0.1 °F
-
1% + 1.8 °F
The specifications above is specified after 60 minutes of warm-up time.
2. The accuracy does not include the tolerance of the thermocouple probe.
3. Do not allow the temperature sensor to contact a surface that is energized above 30 Vrms or 60 V DC. Such voltages poses a shock hazard.
4. Ensure that the ambient temperature is stable within ±1 ºC and that the Null function is used to reduce the test lead’s thermal effect and temperature
offset. Before using Null function, set the multimeter to measure temperature without ambient compensation (°C) and keep the thermocouple probe
as close to the multimeter as possible (avoid contact with any surface that has a different temperature from the ambient temperature).
5. When measuring temperature with respect to any temperature calibrator, try to set both the calibrator and multimeter with an external reference
(without internal ambient compensation). If both the calibrator and multimeter are set with internal reference (with internal ambient compensation),
some deviations may show between the readings of the calibrator and multimeter, due to differences in ambient compensation between the
calibrator and multimeter. Keeping the multimeter close to the output terminal of calibrator will help reduce the deviation.
6. The temperature calculation is specified according to the safety standards of EN/IEC-60548-1 and NIST175.
Capacitance specifications [7][8]
Accuracy
Range
Resolution
U1271A
U1272A
10 nF
0.001 nF
1% + 5
1% + 5
100 nF
0.01 nF
1% + 2
1% + 2
1000 nF
0.1 nF
1% + 2
1% + 2
10 µF
0.001 µF
1% + 2
1% + 2
100 µF
0.01 µF
1% + 2
1% + 2
1000 µF
0.1 µF
1% + 2
1% + 2
10 mF
0.001 mF
1% + 2
1% + 2
7. Overload protection: 1000 Vrms for short circuits with <0.3 A current.
8. The accuracy for all ranges is specified based on a film capacitor or better, and after the Null function is used to subtract the test
lead resistance and thermal effect (by shorting the test leads).
12
Frequency specifications [1][2]
Range
Resolution
Accuracy
99.999 Hz
0.001 Hz
0.02% + 5
999.99 Hz
0.01 Hz
0.005% + 5
9.9999 kHz
0.1 Hz
0.005% + 5
99.999 kHz
1 Hz
0.005% + 5
999.99 kHz
0.01 kHz
0.005% + 5
>1 MHz
0.1 kHz
0.005% + 5 @ <1 MHz
Minimum input frequency
0.5 Hz
1. Overload protection: 1000 V; input signal is <20,000,000 V × Hz (product of voltage and frequency).
2. The frequency measurement is susceptible to error when measuring low-voltage, low-frequency signals. Shielding
inputs from external noise pickup is critical for minimizing measurement errors. Turning on the low pass filter may help
you to filter out the noise and achieve a stable reading.
Duty Cycle [3]
Mode
Range
Accuracy at full scale
DC Coupling
99.99%
0.3 % per kHz + 0.3 %
AC Coupling
99.99%
0.3 % per kHz + 0.3 %
Pulse Width [4]
Range
Resolution
Accuracy at full scale
999.99 ms
0.01 ms
(duty cycle accuracy/frequency) + 0.01 ms
2000.0 ms
0.1 ms
(duty cycle accuracy/frequency) + 0.1 ms
3. Notes for duty cycle specifications:
•
The accuracy for duty cycle and pulse width measurements is based on a 3 V square wave input to the dc 3
V range. For ac couplings, the duty cycle range can be measured within the range of 10% to 90% for signal
frequencies >20 Hz.
•
The range of the duty cycle is determined by the frequency of the signal: {10 μs × frequency × 100%} to {[1 – (10
μs × frequency)] × 100%}.
•
The pulse width (positive or negative) must be >10 μs. The range of the pulse width is determined by the
frequency of the signal.
4. Notes for pulse width specifications:
•
The accuracy for duty cycle and pulse width measurements is based on a 3 V square wave input to the dc 3 V range.
•
The pulse width (positive or negative) must be >10 μs. The range of the pulse width is determined by the
frequency of the signal.
13
Frequency sensitivity for voltage measurements [1][2][3]
Minimum sensitivity (RMS sine wave)
Input range
15 Hz to 100 kHz
0.5 Hz to 200 kHz
Up to 1 MHz
Trigger level for dc coupling
0.5 Hz to 200 kHz
U1271A
U1272A
30 mV
3 mV
3 mV
-
-
5 mV
300 mV
6 mV
8 mV
40 mV
10 mV
15 mV
3V
0.12 V
0.2 V
0.4 V
0.15 V
0.15 V
30 V
0.6 V
0.8 V
2.6 V
1.5 V
1.5 V
300 V
6V
8 V @ <100 kHz
-
9 V @ <100 kHz
9 V @ <100 kHz
1000 V
50 V
50 V @ <100 kHz
-
90 V @ <100 kHz
90 V @ <100 kHz
1.
Maximum input for specified accuracy, refer to “AC specifications” on page 9.
2.
30 mV range applicable for U1272A only.
3. 200 kHz to 1 MHz range applicable for U1272A only.
Frequency sensitivity for current measurements [4]
Input range
Minimum sensitivity (RMS sine wave)
2 Hz to 30 kHz
300 µA
100 µA
3000 µA
70 µA
30 mA
1.2 mA
300 mA
12 mA
3A
0.12 A
10 A
1.2 A
4. Maximum input for specified accuracy, refer to “AC specifications” on page 9.
Peak hold
Signal width
Accuracy for DC Voltage and Current
Single event >1 ms
Specified accuracy + 400
Repetitive >250 µs
Specified accuracy + 1000
14
Decibel (dB) for U1272A [1] - [3]
dB base
Reference
Default reference
1 mW (dBm)
1 to 9999 Ω
50 Ω
1 V(dBV)
1V
1V
1. The reading of dBm is indicated in decibels of power above or below 1 mW, or decibels of voltage above or below 1 V. The
formula is calculated according to the voltage measurement and specified reference impedance. Its accuracy is
depended on the accuracy of the voltage measurement. See Decibel (dBV) accuracy table below.
2. Auto-ranging mode is used.
3. The bandwidth is according to voltage measurement.
Decibel (dBV) accuracy
dBV range
Range
Accuracy
20 Hz to 1 Hz to 5 kHz to 20 Hz to
45 to 65 Hz
1 kHz
5 kHz 20 kHz 100 kHz
Minimum
Maximum
-56.48
-30.46
300 mV
-36.48
-10.46
0.06
0.07
0.09
0.1
0.32
3V
-16.48
+9.54
0.06
0.09
0.14
0.19
0.32
30 mV
0.06
0.07
0.09
0.1
0.32
30 V
+3.52
+29.54
0.06
0.09
0.14
0.19
0.32
300 V
+23.52
+49.54
0.06
0.09
0.14
0.19
-
1000 V
+33.98
+60
0.06
0.09
0.14
-
-
Measurement rate (approximate)
Function
ACV
Times/second
U1271A
U1272A
7
7
DCV
7
7
Ω
14
14
Ω with offset compensation
-
3
Diode
14
14
Auto Diode
-
3
Capacitance
4 (<100 µF)
4 (<100 µF)
DCI
7
7
ACI
7
7
Temperature
7
7
Frequency
2 (>10 Hz)
2 (>10 Hz)
Duty cycle
1 (>10 Hz)
1 (>10 Hz)
Pulse width
1 (>10 Hz)
1 (>10 Hz)
15
Ordering Information
U1271A
U1272A
Standard Shipped Accessories
Standard test leads, test probes with 19-mm and 4-mm tips, K-type thermocouple and adapter, 4x AAA batteries, Certificate of
Calibration, test report, Quick Start Guide
Optional Accessories
Measuring Accessories (non-temperature)
U1160A Standard test lead kit
Includes two test leads (red and black), alligator clips,
fine-tip test probes, SMT grabbers and mini grabber
(black).
•
•
•
•
•
Test leads: CAT III 1000 V, 15 A
Alligator clips: CAT III 1000 V, 10 A
Fine-tip test probes: CAT II 300 V, 3 A
SMT grabbers: CAT II 300 V, 3 A
Mini grabber: CAT II 300 V, 3 A
U1161A Extended test lead kit
U1162A Alligator clips
Includes two test leads (red and black), two test
probes, medium-sized alligator clips and 4-mm banana
plugs.
• One pair of insulated alligator clips (red and black).
Recommended for use with Agilent standard test
leads.
• Rated CAT III 1000 V, 10 A.
•
•
•
•
Test leads: CAT III 1000 V, CAT IV 600 V, 15 A
Test probes: CAT III 1000 V, 15 A
Medium-sized alligator clips: CAT III 600 V, 10 A
4-mm banana plugs: CAT II 600 V, 10 A
U1163A SMT grabbers
• One pair of SMT grabbers (red and black).
Recommended for use with Agilent standard
test leads.
• Rated CAT II 300 V, 3 A.
U1164A Fine-tip test probes
U1165A Test probe leads
• One pair of fine-tip test probes (red and black).
Recommended for use with Agilent standard
test leads.
• Rated CAT II 300 V, 3 A.
• Rated CAT III 1000 V, 15 A
16
Measuring Accessories (non-temperature)
U1168A Standard test lead kit
U1169A Test probe leads
U1583B AC current clamp
Includes two test leads (red and black), 19-mm and
4-mm test probes, alligator clips, fine-tip test probes,
SMT grabbers and mini grabber (black).
Includes two test leads (red and black), and a pair each
of 19-mm and 4-mm test probes.
• Dual range: 40 A and 400 A
• Rated CAT III 600 V
• BNC-to-banana-plug adapter provided for use
with DMMs
• Test leads: CAT III 1000 V, CAT IV 600 V, 15 A
• Test probes (19-mm tip): CAT III 1000 V, CAT IV 600 V,
15 A
• Test probes (4-mm tip): CAT III 1000 V, CAT IV 600 V,
15 A (highly recommended for CAT IV environment)
• Alligator clips: CAT III 1000 V, 10 A
• Fine-tip test probes: CAT II 300 V, 3 A
• SMT grabber: CAT II 300 V, 3 A
• Mini grabber: CAT II 300 V, 3 A
• Test leads: CAT III 1000 V, CAT IV 600 V, 15 A
• Test probes (19-mm tip): CAT III 1000 V, CAT IV 600 V,
15 A
• Test probes (4-mm tip): CAT III 1000 V, CAT IV 600 V,
15 A (highly recommended for CAT IV environment)
Measuring Accessories (temperature)
U1180A Thermocouple adapter+lead kit, J and
K types
U1181A Immersion temperature probe
U1182A Industrial surface temperature probe
• Type-K T/C for use in oil and other liquids
• Measurement range: –50 °C to 700 ºC
• Includes adapter U1184A for connection to DMM
• Type-K T/C for use on still surfaces
• Measurement range: –50 ºC to 400 ºC
• Includes adapter U1184A for connection to DMM
U1183A Air temperature probe
U1184A Temperature probe adapter
U1185A J-type thermocouple and adapter
• Type-K T/C for use in air and non-caustic gas
• Measurement range: –50 ºC to 800 ºC
• Includes adapter U1184A for connection to DMM
• Mini-connector-to-banana-plug adapter for use
with DMM
• T/C adapter J/K-type
• T/C bead J-type: –20 °C to 200 °C
Includes thermocouple adapter, thermocouple bead
J-type and thermocouple bead K-type.
• T/C adapter J/K-type
• T/C bead J-type: –20 °C to 200 °C
• T/C bead K-type: –20 °C to 200 °C
U1186A K-type thermocouple and adapter
• T/C adapter J/K-type
• T/C bead J-type: –20 °C to 200 °C
17
Cable
U1173A IR-to-USB cable
U1174A Soft carrying case
• For remote control and data logging to PC
• Max. baud rate: 19,200 bits per second
The convenient way to carry your DMM and
essential accessories
• Dimension: 9” (H) x 5” (W) x 3” (D)
Hanging Kit
U1171A Magnetic hanging kit
For fastening of DMM to a steel surface so both hands
are free.
Probe Clip Light
U1176A LED Probe Clip Light
• 3 inches in length
• To be clipped onto test probes to increase visibility
• Comes with one AAA battery
18
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Revised: July 8, 2010
Product specifications and descriptions
in this document subject to change
without notice.
© Agilent Technologies, Inc. 2010
Printed in USA, October 25, 2010
5990-6425EN