U1273A_技术文档

Keysight Technologies

U1270 Series Handheld

Digital Multimeters

Data Sheet

2 | Keysight | U1270 Series Handheld Digital Multimeters - Data Sheet

Be Ready for Winter

Features

Operational down to –40 °C

temperature

Increase productivity with Blue-

tooth^®wireless

connectivity

– OLED display with 2000:1 contrast

ratio and 160 degrees viewing angle^3,4

– 30,000-count resolution

– Measure up to 1000 V AC and DC

– Measure up to 10 A (20 A for 30 s)

– Resistance, diode test, temperature,

capacitance

– Low Impedance mode^2,3,4and Low

Pass Filter

– Peak detection of up to 250 µs

– Continuity test with beeper and back-

light^1,2

The U1273AX OLED handheld digital

multimeter, the latest addition to U1270

Series, is capable of operating in winter

weather down to –40°C temperature. Even

in frigid conditions, the U1273AX enables

you to achieve immediate and accurate

results without the need to warm up in

advance.

For wireless connectivity to smartphones

and tablets, the U1270 Series is compat-

ible with the U1177A infrared-to-Bluetooth

adapter for maximum efﬁciency and

productivity in completing measure-

ments tasks. Adding the optional U1177A

to a U1270 Series you can easily perform

remote monitoring and data

logging via Android devices or Windows-

based PC.

– Seven readings/s measurement rate

for voltage and current

– Smooth function for accurately stable

readings

– Up to 10,000 points internal memory

for data logging

– Bluetooth wireless connectivity with

optional U1177A Bluetooth

– PC connectivity with optional U1173A

IR-USB cable

– IP 54 certiﬁed – water and dust resis-

tant

– CAT III 1000 V, CAT IV 600 V safety

rating

– Up to 3000m operating altitude

– –40 to 55 °C operating temperature⁴

OLED for more display clarity

Designed with OLED display, you can ex-

perience crystal-clear measurement read-

ings with its outstanding 2000:1 contrast

ratio. The display also allows wider viewing

angles up to 160 degrees ensuring you get

the right readings at the ﬁrst glance even

in poorly lit environments.

1. U1271A

2. U1272A

3. U1273A

4. U1273AX

3 | Keysight | U1270 Series Handheld Digital Multimeters - Data Sheet

Key Functions

Water and dust resistance (IP54) High measurement rate at seven Up to 10,000 recording points

readings per second for Voltage

and Current

for manual, auto and event log-

ging

The series’ tightly sealed design helps

protect against water, dust and damage.

Each handheld DMM is certiﬁed with IP 54

ratings so that you can carry out tests and

measurements with conﬁdence, even in

harsh working conditions.

You can detect even the slightest change

in your sensitive signals (Voltage and Cur-

rent) with its high measurement rate capa- huge internal memory of up to 10,000

bility. By clicking the resettable smooth

function button, you may customize the

readings’ sensitivity suitable for various

tests.

Record measurements on-the-go and

transfer data to PC conveniently with the

recording points. The GUI Data Logging

software and optional U1173A IR-USB

cable are required to transfer data or per-

form real time data logging on a PC.

Operational up to 3000

meters altitude

For high altitude applications such as

wind farm maintenance, you can measure

with conﬁdence using the U1270 Series,

capable of measuring up to 3000 meters

above sea level.

Visual alert for continuity test

(for U1271A and U1272A only)

Built-in Low Pass Filter

The U1270 Series offers a 1 kHz LPF or

Low Pass Filter to provide accurate Vari-

able Frequency Drive (VFD) output mea-

surements. This function eliminates high

frequency noise and harmonics, ensuring

motor ﬁlter efﬁciency.

Continuity detection in noisy and dark

environments is made easy with U1270

Series’ loud beeper and ﬂashing backlight

that indicates continuity and thus im-

proves safety.

Figure 1. Comparison of voltage output from industrial motor VFD without and with Low Pass Filter functionality.

4 | Keysight | U1270 Series Handheld Digital Multimeters - Data Sheet

Key Functions

Low impedance mode

Peak detect at 250 µs

Stray voltages are usually found in non-

energized electrical wiring adjacent to

powered wires due to capacitive or induc-

tive coupling between these wires. The low

impedance mode serves to eliminate false

readings by dissipating these stray voltag-

es thus improves safety and measurement

efﬁciency during voltage measurement.

The peak detect function allows you to

capture the engine or motor startup tran-

sient as fast as 250 µs.

Figure 2. 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.

5 | Keysight | U1270 Series Handheld Digital Multimeters - Data Sheet

Front and Back Panel Description

OLED display with 2000:1

contrast ratio and 160

degree viewing angle

30,000 counts resolution

Smart Ω¹removes residual

Peak detect records tran-

sients as fast as 250 μs

voltage of up to 1000 mV

Measure up to

1000 V AC and DC

Auto diode¹automatically

determines diode polarity

Low Pass Filter (LPF)

removes unwanted high

frequency signals

Temperature measurement:

J type thermocouple

–210 to 1200 °C¹, K type ther-

mocouple –200 to 1732 °C

Z_LOW¹provides both high

and low impedance modes

to eliminate stray voltages

Measure up to 10 A

(20 A for 30 s)

Front panel

1. U1272A, U1273A and U1273AX only

Once connected to any HH DMM via Bluetooth adapter you are able to log and view measurements

graphically from smart phones and tablets.

6 | Keysight | U1270 Series Handheld Digital Multimeters - Data Sheet

Front and Back Panel Description

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

7 | Keysight | U1270 Series Handheld Digital Multimeters - Data Sheet

Choose Among These Four Models

U1271A

U1272A

U1273A

U1273AX

Basic Features

Display resolution

Display

30,000 counts

LCD

Yes

AC

LCD

OLED

N/A

OLED

N/A

Backlight

Yes

True RMS

AC + DC

Measurements

Voltage

Up to 1000 V AC, DC

0.05% + 2 counts

Up to 1000 V AC, DC

0.05% + 2 counts

Up to 1000 V AC, DC

0.05% + 2 counts

Up to 1000 V AC, DC

0.05% + 2 counts

Basic dcV accuracy

Up to 10 A

(20 A for 30 s)

Up to 10 A

(20 A for 30 s)

Up to 10 A

(20 A for 30 s)

Up to 10 A

(20 A for 30 s)

Current

Resistance

Up to 100 MΩ

Up to 300 MΩ

Frequency, capacitance,

temperature, continuity,

diode test

Frequency, capacitance,

temperature, continuity,

diode test

Frequency, capacitance,

temperature, continuity,

diode test

Frequency, capacitance,

temperature, continuity,

diode test

Other measurements

AC bandwidth

20 kHz

Yes

100 kHz

Yes

100 kHz

Yes

100 kHz

Yes

Low pass ﬁlter

Low impedance mode

Smart Ohm

—

Yes

Safety and Regulatory

Over-voltage safety

protection

CAT III 1000 V,

CAT IV 600 V

CAT III 1000 V,

CAT IV 600 V

CAT III 1000 V,

CAT IV 600 V

CAT III 1000 V,

CAT IV 600 V

General

Logging memory

200 points

10,000 points

Optional IR-USB and

Bluetooth

Optional IR-USB and

Bluetooth

Optional IR-USB and

Bluetooth

Optional IR-USB and

Bluetooth

Connectivity

Operating temperature

Altitude

–20 to 55 °C

3000 meters

–20 to 55 °C

3000 meters

–20 to 55 °C

3000 meters

–40 to 55 °C

3000 meters

Water and dust ingress

protection

IP 54

Up to 300 hours 4X AAA

Alkaline

Up to 300 hours 4X AAA

Alkaline

Up to 60 hours 4X AAA

Alkaline

Up to 100 hours 4X AAA

Lithium

Battery life

Warranty

3 years

8 | Keysight | U1270 Series Handheld Digital Multimeters - Data Sheet

General Speciﬁcations

Display

U1271A and U1272A: Liquid crystal display (LCD) (with maximum reading of 33,000 counts)

U1273A/U1273AX: Organic LED (OLED) display (with maximum reading of 33,000 counts)

Power consumption

Battery type

U1271A/U1272A: 460 mVA maximum (with backlight enabled)

U1273A/U1273AX: 180 mVA maximum (with maximum brightness)

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)

4 × 1.5 V Lithium battery (ANSI/NEDA 24LF or IEC FR03)

Battery life

U1271A and U1272A: 300 hours typical (based on new Alkaline batteries for DC voltage measurement)

U1273A/U1273AX:

Based on new Alkaline batteries for DC voltage measurement:

30/45/60 hours typical at High/Medium/Low brightness, respectively

Based on new Lithium batteries for DC voltage measurement:

50/100 hours typical at High/Low brightness, respectively

Low battery indicator will ﬂash when the battery voltage drops:

For non-rechargeable batteries: 4.4 V (approximately)

For rechargeable batteries: 4.5 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

Input impedance at off mode

Operating environment

1.67 kΩ (protected by positive temperature coefﬁcient resistor)

(U1272A, U1273A and U1273AX only)

Operating temperature:

U1271A/ U1272A/U1273A: –20 to 55 °C, 0% to 80% RH

U1273AX: –40 to 55 °C, 0% to 80% RH (using Lithium batteries)

Full accuracy up to 80% RH for temperatures up to 30 °C, decreasing linearly to

50% RH at 55 °C

Altitude up to 3000 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

CAT III 1000 V/CAT IV 600 V

Commercial limits compliance with EN61326-1

IP-54

Electromagnetic compatibility (EMC)

Ingress protection rating

Temperature coefﬁcient

U1271A/U1272A/U1273A: 0.05 × (speciﬁed accuracy)/°C (from –20 to 18 °C, or 28 to 55 °C)

U1273AX: 0.05 x (speciﬁed accuracy/ °C (from –40 to 18 °C, or 28 to 55 °C)

Common Mode Rejection Ratio (CMRR)

Normal Mode Rejection Ration (NMRR)

Dimensions (W x H x D)

> 120 dB at DC, 50/60 Hz ± 0.1% (1 kΩ unbalanced)

> 60 dB at 50/60 Hz ± 0.1%

92 × 207 × 59 mm

Weight

U1271A: 518 grams (with batteries)

U1272A: 520 grams (with batteries)

U1273A: 500 grams (with batteries)

U1273AX: 500 grams (with batteries)

Warranty

Three years for product

Three months for product’s accessories

Calibration cycle

One year

9 | Keysight | U1270 Series Handheld Digital Multimeters - Data Sheet

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 Z_LOWvoltage measurements, wait at least 20 minutes for thermal impact to cool before proceeding with any

other measurement.

10 | Keysight | U1270 Series Handheld Digital Multimeters - Data Sheet

Electrical Speciﬁcations

DC speciﬁcations for U1271A, U1272A, U1273A and U1273AX

Accuracy ± (% of reading +

counts of least signiﬁcant digit)

Test current/

Burden voltage

Function

Range

Resolution

U1271A

—

U1272A

0.05 + 20

0.05 + 5

0.05 + 2

U1273A/U1273AX

0.05 + 20

0.05 + 5

30 mV

300 mV

3 V

0.001 mV

0.01 mV

0.0001 V

0.001 V

0.01 V

—

0.05 + 5

0.05 + 2

0.05 + 5

30 V

0.05 + 2

300 V

1000 V

0.05 + 2

0.1 V

0.05 + 2

Voltage¹

Z_LOW(low

input

impedance)

enabled, ap-

plicable for

1000 V range

and resolu-

tion only

0.1 V

—

1 + 20

—

30 Ω

300 Ω

3 kΩ

0.001 Ω

0.01 Ω

—

0.2 + 10

0.2 + 5

0.6 + 5

1.2 + 5

—

0.2 + 10

0.2 + 5

0.6 + 5

1.2 + 5

—

0.65 mA

0.2 + 5

0.6 + 5

1.2 + 5

2.0 +10

0.0001 kΩ

0.001 kΩ

0.01 kΩ

65 µA

30 kΩ

300 kΩ

3 MΩ

6.5 µA

0.65 µA

Resistance²

0.0001 MΩ

0.001 MΩ

0.01 MΩ

93 nA/10 MΩ

30 MΩ

100 MΩ

2.0 + 10 @ < 100 MΩ

8.0 + 10 @ > 100 MΩ

2.0 + 10 @ < 100 MΩ

8.0 + 10 @ > 100 MΩ

300 MΩ

0.01 MΩ

—

93 nA/10 MΩ

300 nS

300 µA

3000 µA

30 mA

300 mA

3 A

0.01 nS

0.01 µA

0.1 µA

1 + 10

0.2 + 5

0.3 +10

1 + 10

0.2 + 5

0.3 +10

1 + 10

0.2 + 5

0.3 +10

93 nA/10 MΩ

< 0.04 V/100 Ω

< 0.4 V/100 Ω

< 0.08 V/1 Ω

0.001 mA

0.01 mA

0.0001 A

0.001 A

Current³

< 1.00 V/1 Ω

< 0.1 V/0.01 Ω

< 0.3 V/0.01 Ω

10 A

Approximately

1 to 2 mA

3 V

0.0001 V

0.5 + 5

—

0.5 + 5

Diode Test⁴

Approximately

0.1 to 0.3 mA

Auto

See notes on next page.

11 | Keysight | U1270 Series Handheld Digital Multimeters - Data Sheet

Electrical Speciﬁcations

Notes for DC speciﬁcations (previous page)

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 Z_LOWmeasurements, 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 measure-

ments 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).

– U1273AX only: The accuracy for all resistance ranges is speciﬁed after the Null function is used when measuring at temperatures

below –20 °C. 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 –40 to 18 °C or 28 to 55 °C).

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 measured time before

proceeding with low current measurements.

4. 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 diode 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.

12 | Keysight | U1270 Series Handheld Digital Multimeters - Data Sheet

Electrical Speciﬁcations

AC speciﬁcations for U1271A

Accuracy ± (% of reading + counts of least signiﬁcant digit)

Function

Range

Resolution

45 Hz to

65 Hz

30 Hz to

1 kHz

1 kHz to

5 kHz

5 kHz to

20 kHz

300 mV

3 V

0.01 mV

0.0001 V

0.001 V

0.01 V

0.7 + 20

1.0 + 25

2.0 + 25

—

2.0 + 40

—

30 V

True RMS AC

Voltage¹

300 V

1000 V

0.1 V

—

LPF (low pass ﬁlter) enabled,

applicable for all voltage

ranges and resolution

1.0 + 25 @ < 200 Hz

5.0 + 25 @ < 440 Hz

0.7 + 20

—

Accuracy ± (% of reading + counts of least

signiﬁcant digit)

Function

Range

Resolution

Burden voltage/Shunt

45 Hz to 2 kHz

300 µA

3000 µA

30 mA

300 mA

3 A

0.01 µA

0.1 µA

0.9 + 25

1.0 + 25

< 0.04 V/100 Ω

< 0.4 V/100 Ω

< 0.08 V/1 Ω

< 1.00 V/1 Ω

0.001 mA

0.01 mA

0.0001 A

0.001 A

True RMS AC

Current²

< 0.1 V/0.01 Ω

< 0.3 V/0.01 Ω

10 A

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.

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.

13 | Keysight | U1270 Series Handheld Digital Multimeters - Data Sheet

Electrical Speciﬁcations

AC speciﬁcations for U1272A/U1273A and U1273AX

Accuracy ± (% of reading + counts of least signiﬁcant digit)

Function

Range

Resolution

45 Hz to

65 Hz

20 Hz to

1 kHz

1 kHz to

5 kHz

5 kHz to

20 kHz

20 kHz to

100 kHz

30 mV

300 mV

3 V

0.001 mV

0.01 mV

0.0001 V

0.001 V

0.01 V

0.6 + 20

0.7 + 25

1.0 + 25

1.5 + 25

1.0 + 40

2.0 + 40

—

3.5 + 40

—

30 V

True RMS AC

Voltage¹

300 V

1000 V

0.1 V

—

1.0 + 25 @ <

200 Hz

5.0 + 25 @ <

440 Hz

LPF (low pass ﬁlter) enabled,

applicable for all voltage

ranges and resolution

0.6 + 20

2.0 + 40

—

2 + 40 @ < 440

Hz

Z_LOW1000 V

Accuracy ± (% of reading +

counts of least signiﬁcant digit)

Function

Range

Resolution

Burden voltage/Shunt

45 Hz to 65 Hz

20 Hz to 2 kHz

300 µA

3000 µA

30 mA

300 mA

3 A

0.01 µA

0.1 µA

0.6 + 25

0.8 + 25

0.9 + 25

1.0 + 25

< 0.04 V/100 Ω

< 0.4 V/100 Ω

< 0.08 V/1 Ω

< 1.00 V/1 Ω

0.001 mA

0.01 mA

0.0001 A

0.001 A

True RMS AC

Current²

< 0.1 V/0.01 Ω

< 0.3 V/0.01 Ω

10 A

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.

- Z_LOWimpedance: 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.

- U1273AX only: For all AC voltage ranges, the accuracy is speciﬁed at 2.5% + 25 counts when measuring below –20 °C for 20 to 45 Hz AC signals.

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.

- U1273AX only: The accuracy for the 300 μA range, 3000 μA range, and 30 mA is speciﬁed after the Null function is used when measuring at temperatures

below –20 °C. The Null function is used to subtract the test lead resistance and thermal effect (by shorting the test leads).

- U1273AX only: For all AC current ranges, the accuracy is speciﬁed at 2.5% + 25 counts when measuring below –20 °C for 20 to 45 Hz AC signals.

14 | Keysight | U1270 Series Handheld Digital Multimeters - Data Sheet

Electrical Speciﬁcations

AC + DC speciﬁcations for U1272A/U1273A and U1273AX

Accuracy ± (% of reading + counts of least signiﬁcant digit)

Function

Range

Resolution

45 Hz to

65 Hz

20 Hz to

1 kHz

1 kHz to

5 kHz

5 kHz to

20 kHz

20 kHz to

100 kHz

30 mV

300 mV

3 V

0.001 mV

0.01 mV

0.0001 V

0.001 V

0.01 V

0.7 + 40

0.7 + 25

0.8 + 45

0.8 + 30

1.1 + 30

1.1 + 45

1.1 + 30

1.6 + 30

1.1 + 60

1.1 + 45

2.1 + 45

—

3.6 + 60

3.6 + 45

—

True RMS

AC + DC Voltage¹

30 V

300 V

1000 V

0.1 V

—

Accuracy ± (% of reading +

counts of least signiﬁcant digit)

Function

Range

Resolution

Burden voltage/Shunt

45 Hz to 65 Hz

20 Hz to 2 kHz

300 µA

3000 µA

30 mA

300 mA

3 A

0.01 µA

0.1 µA

0.8 + 30

0.9 + 35

1.1 + 30

1.3 + 35

< 0.04 V/100 Ω

< 0.4 V/100 Ω

< 0.08 V/1 Ω

< 1.00 V/1 Ω

0.001 mA

0.01 mA

0.0001 A

0.001 A

True RMS

AC + DC Current²

< 0.1 V/0.01 Ω

< 0.3 V/0.01 Ω

10 A

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

- U1273AX only: For all AC+DC voltage ranges, the accuracy is speciﬁed at 2.5% + 30 counts when measuring below –20 °C for 20 to 45 Hz AC+DC signals.

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.

- U1273AX only: The accuracy for the 300 μA range, 3000 μA range, and 30 mA is speciﬁed after the Null function is used when measuring at temperatures

below –20 °C. The Null function is used to subtract the test lead resistance and thermal effect (by shorting the test leads).

- U1273AX only: For all AC+DC current ranges, the accuracy is speciﬁed at 2.5% + 30 counts when measuring below –20 °C for 20 to 45 Hz AC+DC signals.

15 | Keysight | U1270 Series Handheld Digital Multimeters - Data Sheet

Electrical Speciﬁcations

Temperature speciﬁcations^{1 - 4}

Accuracy ± (% of reading +

Thermocouple

as speciﬁed below)

Range

Resolution

type

U1271A

U1272A

U1273A/U1273AX

1% of reading

+ 1 °C

1% of reading

+ 1 °C

1% of reading

+ 1 °C

–200 to 1372 °C

–328 to 2502 °F

0.1 °C

0.1 °F

K

J

1% of reading

+ 1.8 °F

1% of reading

+ 1.8 °F

1% of reading

+ 1.8 °F

—

1% of reading

+ 1 °C

1% of reading

+ 1 °C

–210 to 1200 °C

–346 to 2192 °F

0.1 °C

0.1 °F

1% of reading

+ 1.8 °F

1% of reading

+ 1.8 °F

—

1. 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 pose a shock hazard.

4. The temperature calculation is speciﬁed according to the safety standards of EN/IEC-60548-1 and NIST175.

Capacitance speciﬁcations^{5, 6}

Accuracy ± (% of reading +

counts of least signiﬁcant digit)

Range

Resolution

U1271A

1 + 5

1 + 2

U1272A

1 + 5

1 + 2

U1273A/U1273AX

10 nF

100 nF

1000 nF

10 μF

0.001 nF

0.01 nF

0.1 nF

1 + 5

1 + 2

0.001 μF

0.01 μF

0.1 μF

100 μF

1000 μF

10 mF

0.001 mF

5. Overload protection: 1000 Vrms for short circuits with < 0.3 A current.

6. 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 ther-

mal effect (by opening the test leads).

16 | Keysight | U1270 Series Handheld Digital Multimeters - Data Sheet

Electrical Speciﬁcations

Frequency speciﬁcations^{1, 2}

Accuracy ± (% of reading +

counts of least signiﬁcant digit)

Range

Resolution

Minimum input frequency

99.999 Hz

999.99 Hz

9.9999 kHz

99.999 kHz

999.99 kHz

> 1 MHz

0.001 Hz

0.01 Hz

0.1 Hz

0.02 + 5

0.005 + 5

0.5 Hz

1 Hz

0.005 + 5

0.01 kHz

0.1 kHz

0.005 + 5

0.005 + 5 @ < 1 MHz

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 criti-

cal for minimizing measurement errors. Turning on the low pass ﬁlter may help you to ﬁlter out the noise and achieve a stable reading.

Duty Cycle³

Mode

Range

99.99%

Accuracy at full scale

0.3 % per kHz + 0.3 %

DC coupling

AC coupling

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.

Pulse Width⁴

Range

Resolution

0.01 ms

0.1 ms

Accuracy at full scale

999.99 ms

2000.0 ms

(duty cycle accuracy/frequency) + 0.01 ms

(duty cycle accuracy/frequency) + 0.1 ms

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.

17 | Keysight | U1270 Series Handheld Digital Multimeters - Data Sheet

Electrical Speciﬁcations

U1271A and U1272A frequency sensitivity for voltage measurements^{1, 2, 3}

Minimum sensitivity (RMS sine wave)

Trigger level for DC coupling

0.5 Hz to 200 kHz

Input range

15 Hz to

100 kHz

0.5 Hz to

200 kHz

Up to

1 MHz

U1271A

U1272A

5 mV

30 mV

300 mV

3 V

3 mV

6 mV

0.12 V

0.6 V

6 V

3 mV

8 mV

—

40 mV

0.4 V

2.6 V

—

10 mV

0.15 V

15 mV

0.15 V

0.2 V

30 V

0.8 V

1.5 V

300 V

1000 V

8 V @ < 100 kHz

50 V @ < 100 kHz

9 V @ < 100 kHz

90 V @ < 100 kHz

9 V @ < 100 kHz

90 V @ < 100 kHz

50 V

—

1. Maximum input for speciﬁed accuracy, refer to “AC speciﬁcations” on page 12.

2. 30 mV range applicable for U1272A only.

3. 200 kHz to 1 MHz range applicable for U1272A only.

U1273A/U1273AX sensitivity for voltage measurements⁴

Frequency sensitivity and trigger level

Minimum sensitivity (RMS sine wave) Trigger level for DC coupling

Input range

Maximum input for speciﬁed

accuracy, refer to AC voltage

15 Hz to

100 kHz

0.5 Hz to

200 kHz

Up to

1 MHz

0.5 Hz to 200 kHz

30 mV

300 mV

3 V

3 mV

7 mV

0.12 V

0.8 V

6.7 V

67 V

3 mV

8 mV

—

38 mV

0.48 V

3.5 V

—

5 mV

15 mV

0.12 V

0.15 V

30 V

0.8 V

1.5 V

300 V

1000 V

8 V < 100 kHz

67 V < 100 kHz

11 V < 100 kHz

110 V < 100 kHz

—

4. Maximum input for speciﬁed accuracy, refer to “AC speciﬁcations” on page 13.

Frequency sensitivity for current measurements⁵

Minimum sensitivity (RMS sine wave)

Input range

2 Hz to 30 kHz

U1271A/U1272A

100 µA

70 µA

U1273A/U1273AX

70 μA

300 µA

3000 µA

30 mA

300 mA

3 A

120 μA

1.2 mA

12 mA

0.12 A

10 A

1.2 A

5. Maximum input for speciﬁed accuracy, refer to “AC speciﬁcations” on page 12 and 13.

18 | Keysight | U1270 Series Handheld Digital Multimeters - Data Sheet

Electrical Speciﬁcations

Peak hold

Signal width

Accuracy for DC Voltage and Current

Speciﬁed accuracy + 400

Single event >1 ms

Repetitive >250 µs

Speciﬁed accuracy + 1000

Decibel (dB) for U1272A and U1273A^{1, 2, 3}

dB base

Reference

Default reference

1 mW (dBm)

1 V (dBV)

1 to 9999 Ω

50 Ω

1 V

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

Accuracy

Range

45 Hz to

65 Hz

20 Hz to

1 kHz

1 Hz to

5 kHz

5 kHz to

20 kHz

20 Hz to

100 kHz

Minimum

Maximum

30 mV

300 mV

3 V

–56.48

–36.48

–16.48

+3.52

–30.46

–10.46

+9.54

+29.54

+49.54

+60

0.06

0.07

0.09

0.14

0.1

0.32

—

0.19

—

30 V

300 V

1000 V

+23.52

+33.98

—

Measurement rate (approximate)

Times/second

Function

U1271A

U1272A/U1273A/U1273AX

ACV

DCV

7

Ω

14

Ω with offset compensation

Diode

-

3

14

Auto Diode

Capacitance

DCA

-

3

4 (< 100 µF)

7

ACA

7

Temperature

Frequency

Duty cycle

Pulse width

7

2 (> 10 Hz)

1 (> 10 Hz)

2 (> 10 Hz)

1 (> 10 Hz)

19 | Keysight | U1270 Series Handheld Digital Multimeters - Data Sheet

Ordering Information

U1271A

U1272A

U1273A

U1273AX

Standard shipped accessories

Standard test leads, test probes with 4-mm tips, K-type thermocouple and adapter, 4x AAA alkaline batteries (4x AAA lithium batteries for U1273AX only),

Certiﬁcate of Calibration, UK 6 (test report), Quick Start Guide

Optional accessories

Measuring accessories (non-temperature)

U1161A

Extended test

lead kit

Includes two test leads (red and black), two test probes, medium-sized alligator clips

and 4-mm banana plugs.

– Test leads: CAT III 1000 V, CAT IV 600 V, 15 A

– Test probes (4-mm tips): CAT III 1000 V, CAT IV 600 V, 15 A

– Medium-sized alligator clips: CAT III 1000 V/CAT IV 600 V, 15 A

– 4-mm banana plugs: CAT II 600 V, 10 A

U1162A

Alligator clips

– One pair of insulated alligator clips (red and black). Recommended for use with

Keysight standard test leads.

– CAT III 1000 V, CAT IV 600 V, 15 A

U1163A

– One pair of SMT grabbers (red and black). Recommended for use with Keysight

SMT grabbers

standard test leads.

– Rated CAT II 300 V, 3 A

U1164A

Fine-tip test

probes

– One pair of ﬁne-tip test probes (red and black). Recommended for use with

Keysight standard test leads.

– Rated CAT II 300 V, 3 A

U1168A

Standard test

lead kit

Includes two test leads (red and black), 4-mm test probes, alligator clips, ﬁne-tip test

probes, SMT grabbers and mini grabber (black).

– Test leads: CAT III 1000 V, CAT IV 600 V, 15 A

– Test probe (19-mm tips): CAT II 1000 V, 15 A

– Test probe (4-mm tips): CAT III 1000 V, CAT IV 600 V, 15 A

(highly recommended for CAT IV environment)

– Alligator clips: CAT III 1000 V, CAT IV 600 V, 15 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

U1583B

– Dual range: 40 A and 400 A

AC current clamp

– Rated CAT III 600 V

– BNC-to-banana-plug adapter provided for use with DMMs

– -40 to 55 °C operating temperature

20 | Keysight | U1270 Series Handheld Digital Multimeters - Data Sheet

Ordering Information

Optional accessories

Measuring accessories (temperature)

U1180A

Includes thermocouple adapter, thermocouple bead J-type and thermocouple bead

Thermocouple

adapter+lead kit,

J and K types

K-type.

– T/C adapter J/K-type

– T/C bead J-type: –20 to 200 °C

– T/C bead K-type: –20 to 200 °C

U1181A

Immersion tempera-

ture probe

– Type-K T/C for use in oil and other liquids

– Measurement range: –50 to 700 ºC

– Includes adapter U1184A for connection to DMM

U1182A

– Type-K T/C for use on still surfaces

Industrial surface

temperature probe

– Measurement range: –50 to 400 ºC

– Includes adapter U1184A for connection to DMM

U1183A

Air temperature

probe

– Type-K T/C for use in air and non-caustic gas

– Measurement range: –50 to 800 ºC

– Includes adapter U1184A for connection to DMM

U1184A

– Mini-connector-to-banana-plug adapter for use with DMM

Temperature probe

adapter

U1185A

– T/C adapter J/K-type

J-type thermocouple

and adapter

– T/C bead J-type: –20 to 200 °C

U1186A

– T/C adapter J/K-type

K-type thermocou-

ple and adapter

– T/C bead J-type: –20 to 200 °C

21 | Keysight | U1270 Series Handheld Digital Multimeters - Data Sheet

Ordering Information

Optional accessories

U1171A

For fastening the DMM to a steel surface so both hands are free

Magnetic hanging kit

U1173A

IR-to-USB cable

– For remote control and data logging to PC

– Maximum baud rate: 19,200 bits per second

U1174A

The convenient way to carry your DMM and essential accessories

Soft carrying case

– Dimension: 9 inches (H) x 5 inches (W) x 3 inches (D)

U1177A

Bluetooth Adapter

– Enables Bluetooth connection to Keysight handheld digital multimeters

– Support the U1230, U1240, U1250 and U1270 Series handheld multimeters

– Remote monitoring and data logging capabilities via Android devices or

Windows-based PC

– Recommended to use Lithium battery in lower than -20°C in temperature for

long hours of operation

22 | Keysight | U1270 Series Handheld Digital Multimeters - Data Sheet

For more information on Keysight

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This information is subject to change without notice.

Published in USA, May 24, 2016

5990-6425EN

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型号：	U1273A
厂家：	Keysight Technologies
描述：	U1270 Series Handheld Digital Multimeters
文件：	总22页 (文件大小：4252K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

U1273A [KEYSIGHT]

相关型号：

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U12C05

U12C05_05

U12C10

U12C15

U12C20

U12C20A

U12C20A_18

U12C20C

U12C20C_18

U12C20D

U12C20S