U1270_技术文档

Agilent U1270 Series Handheld

Digital Multimeters

Shaped to ﬁt, tailored to perform, built to last

Data Sheet

Features

• Intelligent features:

Z_LOW*, 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

Continuity detection in noisy and dark places

Get a better grip on your

• 30,000-count dual display

• AC + DC capability*

is made easy with the U1270 series’ loud

beeper and Backlight Alert function which

DMM

flashes the backlight to indicate continuity

• CAT III 1000 V, CAT IV 600 V

safety rating

and improve safety.

The U1270 series is shaped perfectly to fit in

your hand, with or without gloves on. Its non-

slip 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.

When it comes to Variable Frequency Drive

(VFD) troubleshooting, the U1270 series has

Low Pass Filter to handle the job with ease.

• Easy maintenance – convenient

fuse access

• Easy connectivity to PC with

optional IR-USB cable

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.

• Internal memory for data logging

Improve productivity with

intelligent features

Designed for maximum efficiency and

productivity in industrial settings, these

DMMs offer convenient functions such as

* U1272A only

** U1271A only

Z

_LOWto 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.

Key functions

Low Impedance (Z_LOW

)

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

Z

_LOW** 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

* U1271A only

** U1272A only

Front panel

3

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

Basic Features

Display resolution

Auto/manual ranging

Analog bar graph

Backlight

30,000

Yes

30,000

Yes

AC bandwidth

True RMS

20 kHz

AC

100 kHz

AC + DC

Measurements

Range

300 mV to 1000 V

0.05% + 2 cnts

300 mV to 1000 V

0.7% + 20 cnts

45 Hz to 20 kHz

300 µA to 10 A

0.2% + 5 cnts

300 µA to 10 A

0.9% + 25 cnts

45 Hz to 2 kHz

30 mV to 1000 V

0.05% + 2 cnts

30 mV to 1000 V

0.6% + 20 cnts

45 Hz to 100 kHz

300 µA to 10 A

0.2% + 5 cnts

300 µA to 10 A

0.6% + 25 cnts

45 Hz to 2 kHz

Voltage DC

Voltage AC

Current DC

Current AC

Accuracy

Range

Accuracy

Bandwidth

Range

Accuracy

Range

Accuracy

Bandwidth

Range

300 Ω to 100 MΩ

0.2 % + 5 cnts

99.999 Hz to 999.99 kHz

0.005% + 5 cnts

30 Ω to 300 MΩ

0.2% + 5 cnts

99.999 Hz to 999.99 kHz

0.005% + 5 cnts

Resistance

Frequency

Capacitance

Accuracy

Range

Accuracy

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

Diode test

Yes

Data Management

Min/Max Recording

Display Hold

Yes

Peak Hold

Yes

Manual Datalogging

Null

Yes

PC Connectivity

% scale of 4-20 mA

IR-USB

Yes

IR-USB

Yes

5

Di

U1271A

U1272A

Special Features

Beep + Backlight Alert

Low Pass Filter (LPF)

Z_LOW- Low impedance mode

Smart Ω

Yes

-

Yes

-

Qik-V

Yes

Safety and Regulatory

Over-voltage safety protection

EN/IEC 61010-1:2001 compliance

General

CAT III 1000 V, CAT IV 600 V

Yes

CAT III 1000 V, CAT IV 600 V

Yes

Battery

4x AAA

Operating temperature

-20 °C to 55 °C, 0 to 80% R.H

Standard test leads, test probes with 19-

mm and 4-mm tips, K-type thermocouple

Standard test leads, test probes with 19-

mm and 4-mm tips, K-type thermocouple

Standard Accessories

and adapter, 4x AAA batteries, Certificate and adapter, 4x AAA batteries, Certificate

of Calibration, test report, Quick Start

Guide

of Calibration, test report, Quick Start

Guide

6

General Specifications

Liquid crystal display (LCD) (with maximum reading of 33000 counts)

460 mVA maximum (with backlight enabled)

Display

Power consumption

Battery Type

•

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)

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)

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 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

Battery Life

Fuse

Operating Environment

•

Altitude up to 2000 meters

Pollution degree II

–40 to 70 °C, 0 to 80% RH

Storage Compliance

Safety Compliance

•

CAN/CSA-C22.2 No. 61010-1-04

EN/IEC 61010-1:2001

ANSI/UL 61010-1:2004

CAT III 1000 V/ CAT IV 600 V

Measurement Category

Commercial limits compliance with EN61326-1

Electromagnetic Compatibility

(EMC)

IP-54

Ingress Protection Rating

Temperature Coefficient

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)

Common Mode Rejection Ratio

(CMRR)

>60 dB at 50/60 Hz 0.1%

Normal Mode Rejection Ration

(NMRR)

Dimensions (W x H x D)

Weight

92 × 207 × 59 mm

•

U1271A: 518 grams (with batteries)

U1272A: 520 grams (with batteries)

Three years for product

Warranty

Three months for product’s accessories

One year

Calibration Cycle

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.

7

Electrical specifications

DC specifications for U1271A and U1272A

Accuracy (% of reading +

Test current/

counts of least significant digit)

Function

Range

Resolution

Burden voltage

U1271A

U1272A

0.05 + 20

0.05 + 5

0.05 + 2

30 mV

300 mV

3 V

30 V

300 V

1000 V

0.001 mV

0.01 mV

0.0001 V

0.001 V

0.01 V

-

0.05 + 5

0.05 + 2

-

Voltage ^[1]

0.1 V

Z_LOW(low input impedance)

enabled, applicable for 1000 V

range and resolution only.

-

1 + 20

30 Ω

300 Ω

3 kΩ

30 kΩ

300 kΩ

3 MΩ

0.001 Ω

0.01 Ω

-

0.2 + 10

0.2 + 5

0.5 + 5

0.6 + 5

1.2 + 5

-

0.65 mA

65 mA

6.5 mA

0.65 mA

0.2 + 5

0.5 + 5

0.6 + 5

1.2 + 5

2.0 +10

0.0001 kΩ

0.001 kΩ

0.01 kΩ

0.0001 MΩ

0.001 MΩ

-

Resistance ^[2]

93 nA//10 MΩ

30 MΩ

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

10 A

3 V

Auto

0.01 nS

0.01 µA

0.1 µA

0.001 mA

0.01 mA

0.0001 A

0.001 A

0.0001 V

1 + 10

0.2 + 5

0.3 +10

0.5 + 5

-

1 + 10

0.2 + 3

0.3 +10

0.5 + 5

93 nA//10 MΩ

<0.04 V/ 100 Ω

<0.4 V/ 100 Ω

<0.08 V/ 1 Ω

<1.00 V/ 1 Ω

Current ^[3]

<0.1 V/ 0.01 Ω

<0.3 V/ 0.01 Ω

Approximately 1 to 2 mA

Approximately 0.1 to 0.3 mA

Diode Test ^[4]

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 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.

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 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

AC specifications for U1271A

Accuracy

Function

Range Resolution

45 Hz to

65 Hz

1 kHz to 5 kHz to

30 Hz to 1 kHz

5 kHz

2.0 + 25

-

20 kHz

2.0 + 40

-

300 mV

3 V

30 V

300 V

1000 V

0.01 mV

0.0001 V

0.001 V

0.01 V

0.7 + 20

1.0 + 25

True RMS AC

Voltage ^[1]

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

-

Accuracy

45 Hz to 2 kHz

Function

Range

Resolution

Burden voltage/Shunt

300 µA

3000 µA

30 mA

300 mA

3A

0.01 µA

0.1 µA

0.001 mA

0.01 mA

0.0001 A

0.001 A

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

<0.1 V/ 0.01 Ω

<0.3 V/ 0.01 Ω

True RMS AC

Current ^[2]

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.

9

AC specifications for U1272A

Accuracy

20 kHz

to 100

kHz

Function

Range Resolution

45 to 20 Hz to 1 1 kHz to 5 kHz to

65 Hz

kHz

5 kHz

20 kHz

30 mV

300 mV

3 V

30 V

300 V

1000 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 3.5 + 40

2.0 + 40 3.5 + 40

2.0 + 40

-

True RMS AC

Voltage ^[1]

0.1 V

LPF (low pass ﬁlter)

enabled, applicable for

all voltage ranges and

resolution

1.0 + 25 @

<200 Hz

0.6 + 20

2.0 + 40

-

5.0 + 25 @

<440 Hz

2 + 40 @

<440 Hz

Z_LOW1000 V

Accuracy

Burden

20 Hz

Function Range Resolution

voltage/

Shunt

45 to

to

65 Hz

2 kHz

300 µA

3000 µA

30 mA

300 mA

3A

0.01 µA

0.1 µA

0.001 mA

0.01 mA

0.0001 A

0.001 A

0.6 + 25 0.9 + 25 <0.04 V/ 100 Ω

0.6 + 25 0.9 + 25 <0.4 V/ 100 Ω

True RMS

0.6 + 25 0.9 + 25

0.8 + 25 1.0 + 25 <0.1 V/ 0.01 Ω

0.8 + 25 1.0 + 25 <0.3 V/ 0.01 Ω

<0.08 V/ 1 Ω

<1.00 V/ 1 Ω

AC Current

[2]

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.

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

20 kHz

to 100

kHz

Function

Range Resolution

45 Hz to 20 Hz to 1 kHz to 5 kHz to

65 Hz

2 kHz

5 kHz

20 kHz

30 mV

300 mV

3 V

30 V

300 V

1000 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

Voltage ^[1]

0.1 V

-

Accuracy

Range Resolution

45 Hz to 20 Hz to

Burden

voltage/

Shunt

<0.04 V/100 Ω

<0.4 V/100 Ω

<0.08 V/1 Ω

<1.00 V/1 Ω

<0.1 V/0.01 Ω

<0.3 V/0.01 Ω

Function

65 Hz

0.8 + 30

0.9 + 35

2 kHz

1.1 + 30

1.3 + 35

300 µA

3000 µA

30 mA

300 mA

3A

0.01 µA

0.1 µA

0.001 mA

0.01 mA

0.0001 A

0.001 A

True RMS

AC + DC

[2]

Current

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.

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

Accuracy

Range

Resolution

U1271A

U1272A

1% + 1 °C

1% + 1.8 °F

1% + 1 °C

1% + 1.8 °F

-200 to 1372 °C

-328 to 2502 °F

-200 to 1200 °C

-328 to 2192 °F

0.1 °C

0.1 °F

0.1 °C

0.1 °F

1% + 1 °C

K

J

1% + 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 poses a shock hazard.

4. Ensure that the ambient temperature is stable within 1 ꢀC 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

1% + 5

1% + 2

U1272A

1% + 5

1% + 2

10 nF

100 nF

1000 nF

10 µF

100 µF

1000 µF

10 mF

0.001 nF

0.01 nF

0.1 nF

0.001 µF

0.01 µF

0.1 µF

0.001 mF

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

99.999 Hz

999.99 Hz

9.9999 kHz

99.999 kHz

999.99 kHz

>1 MHz

Resolution

0.001 Hz

0.01 Hz

0.1 Hz

Accuracy

0.02% + 5

0.005% + 5

Minimum input frequency

0.5 Hz

1 Hz

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 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

99.99%

Accuracy at full scale

0.3 % per kHz + 0.3 %

DC Coupling

AC Coupling

0.3 % per kHz + 0.3 %

Pulse Width ^[4]

Range

999.99 ms

2000.0 ms

Resolution

0.01 ms

Accuracy at full scale

(duty cycle accuracy/frequency) + 0.01 ms

(duty cycle accuracy/frequency) + 0.1 ms

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)

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

Input range

U1271A

U1272A

30 mV

300 mV

3 V

30 V

300 V

1000 V

3 mV

6 mV

0.12 V

0.6 V

6 V

3 mV

8 mV

0.2 V

-

40 mV

0.4 V

2.6 V

-

5 mV

10 mV

15 mV

0.15 V

0.8 V

1.5 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 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]

Minimum sensitivity (RMS sine wave)

Input range

2 Hz to 30 kHz

300 µA

3000 µA

30 mA

300 mA

3 A

100 µA

70 µA

1.2 mA

12 mA

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

Single event >1 ms

Repetitive >250 µs

Accuracy for DC Voltage and Current

Specified accuracy + 400

Specified accuracy + 1000

14

Decibel (dB) for U1272A ^{[1] - [3]}

dB base

1 mW (dBm)

1 V(dBV)

Reference

1 to 9999 Ω

1 V

Default reference

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

Minimum Maximum 45 to 65 Hz

Accuracy

Range

20 Hz to 1 Hz to 5 kHz to 20 Hz to

1 kHz

0.07

0.09

5 kHz 20 kHz 100 kHz

30 mV

300 mV

3 V

30 V

300 V

1000 V

-56.48

-36.48

-16.48

+3.52

-30.46

-10.46

+9.54

+29.54

+49.54

+60

0.06

0.09

0.14

0.1

0.19

-

0.32

-

+23.52

+33.98

0.09

-

Measurement rate (approximate)

Function

Times/second

U1271A

U1272A

ACV

7

DCV

Ω

7

14

7

14

Ω with offset compensation

Diode

-

14

3

14

Auto Diode

Capacitance

DCI

-

3

4 (<100 µF)

7

ACI

7

Temperature

Frequency

Duty cycle

Pulse width

7

2 (>10 Hz)

1 (>10 Hz)

2 (>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).

U1161A Extended test lead kit

Includes two test leads (red and black), two test

probes, medium-sized alligator clips and 4-mm banana

plugs.

U1162A Alligator clips

• 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, 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

• 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

U1164A Fine-tip test probes

U1165A Test probe leads

• Rated CAT III 1000 V, 15 A

• One pair of SMT grabbers (red and black).

Recommended for use with Agilent standard

test 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.

16

Measuring Accessories (non-temperature)

U1169A Test probe leads

U1583B AC current clamp

U1168A Standard test lead kit

Includes two test leads (red and black), and a pair each

• Dual range: 40 A and 400 A

• Rated CAT III 600 V

• BNC-to-banana-plug adapter provided for use

with DMMs

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).

of 19-mm and 4-mm test probes.

• 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)

• 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

Measuring Accessories (temperature)

U1180A Thermocouple adapter+lead kit, J and

K types

U1181A Immersion 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

U1182A Industrial surface temperature probe

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

• Measurement range: –50 ºC to 400 ºC

• Includes adapter U1184A for connection to DMM

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

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

• T/C adapter J/K-type

• T/C bead J-type: –20 °C to 200 °C

with DMM

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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office. The complete list is available at:

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products and applications you select.

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ment’s lifetime. We share measurement

and service expertise to help you create

the products that change our world. To

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of ownership, and move us ahead of your

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Americas

Canada

(877) 894 4414

(11) 4197 3500

305 269 7500

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Latin America

Mexico

www.lxistandard.org

01800 5064 800

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connectivity. Agilent is a founding

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1 800 629 485

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Revised: July 8, 2010

Product specifications and descriptions

in this document subject to change

without notice.

Printed in USA, October 25, 2010

5990-6425EN


型号：	U1270
厂家：	HEWLETT-PACKARD
描述：	Agilent U1270 Series Handheld Digital Multimeters 安捷伦U1270系列手持式数字万用表
文件：	总19页 (文件大小：518K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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