U2761A - KEYSIGHT TECHNOLOGIES

Agilent

U2761A USB Modular Function/Arbitrary Waveform Generator

Data Sheet

Overview

The Agilent U2761A is a 20 MHz USB modular function generator with Arbitrary

waveform and pulse generation capability. It can operate as a standalone or

modular unit when used with the U2781A USB modular instrument chassis.

Features

20 MHz Sine and Square •

waveforms

Sine, Square, Ramp, Triangle, •

Pulse and DC waveforms

14-bit, 50 MSa/s, 64 k-points •

Arbitrary waveforms

AM, FM, PM, ASK, FSK, and •

PSK modulation types

40 mVpp to 5 Vpp amplitude •

range (into 50 ohm load)

Pulse generation•

Easy-to-use bundled software•

Arbitrary waveform editor•

Command logger function•

Hi-Speed 2.0, USBTMC 488.2 •

standards

Various features of the U2761A

Latest DDS technology adoption for more stable and accurate •

output signal

Easy-to-use arbitrary waveform editor for easy customization of •

waveform generation

Built-in modulation capability eliminates the need for a separate •

modulation source

Pulse generation up to 5 MHz with variable period, pulse width, and •

amplitude that are ideal for wide variety of applications

Wide range of Application Development Environment (ADE) •

compatibility

Low start-up cost with standalone capability •

Flexibility in expanding your application when using •

it as modular unit with the U2761A

Command logger function offered in the•

bundled software allows easy command

conversion into VEE programs

tandalone capability

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Direct digital waveform

The U2761A adopts the latest direct

digital synthesis (DDS) technology that

digitally creates arbitrary waveforms

and frequencies from a single and

ﬁ xed frequency source. DDS offers

the precision of digitally controlled

logic—reducing the complexity of

the generator while increasing the

stability. Thus, allowing you to have

a stable, accurate output signal for

clean, low distortion sine waves and

square waves with fast rise and fall

time up to 20 MHz and linear ramp

waves up to 200 kHz.

Arbitrary waveform editor

With every purchase of the U2761A,

it is bundled with an easy-to-use

application software, the Agilent

Measurement Manager. This

application allows customization of

waveforms generation.

Pulse generation

The U2761A can generate pulses

from 500 μHz to 5 MHz. With variable

period, pulse width, and amplitude

parameters, the U2761A is ideally

suited to a wide variety of applications

requiring ﬂ exible pulse width signals.

Internal modulation

Internal AM, FM, PM, ASK, FSK,

and PSK modulation makes it easy

to modulate waveforms without

the need for a separate modulation

source. Linear and logarithmic sweeps

are also built in, with sweep rates

selectable from 1 ms to 500 s.

Quick and easy to begin with

The USB 2.0 interface provides easy

connectivity and setup that allows

automatic detection of the U2761A.

With quick and easy USB connectivity,

the U2761A is ideal for academic and

testing environment. The USBTMC

488.2 standard makes the U2761A

compatible with any system that

comes with USB ports.

Flexible standalone or modular

capability

The U2761A is uniquely designed

with ﬂ exibility to function standalone

or as a modular unit. The standalone

PC-based unit allows you to have low

start-up cost.

ADE compatibility

The U2761A is compatible with a

wide range of ADEs. This minimizes

development time because developers

can program directly using the SCPI

commands.

Listed below are the popular

development environments and tools

that the U2761A is compatible with:

• Agilent VEE and Agilent T&M Toolkit

• Microsoft® Visual Studio .NET,

C/C++ and Visual Basic 6

• LabView®

• MATLAB®

Easy-to-use AMM offers

command logger function

Better yet, Agilent Measurement

Manager application software provides

a quick and easy means to conﬁ gure

and control the device. This enhances

productivity because it allows users

to start performing measurement

promptly without needing to write any

programming codes.

The Agilent Measurement Manager

also comes with a command logger

function that lets you capture

commands that can be easily

converted to VEE programs for VEE

users.

Product Outlook and Dimensions

41.00 mm

Rear View

Front View

Top View

180.00 mm

117.00mm

15.00 mm

12 V, 2 A AC/DC Adaptor•

Power Cord•

USB Standard-A to Mini-B Interface Cable•

L-Mount Kit (used with modular instrument chassis)•

Agilent Automation-Ready CD (contains the Agilent IO Libraries Suite)•

Agilent USB Modular Products Quick Start Guide•

Agilent USB Modular Products Reference CD-ROM•

Agilent Measurement Manager Quick Reference Card•

Certiﬁ cate of Calibration•

1.5 m BNC Coax Cable•

USB Secure Cable•

Standard Shipped Item

Optional Accessories

REMOTE INTERFACE

Hi-Speed USB 2.0•

USBTMC 488.2 Class Device•

POWER CONSUMPTION

+12 VDC, 2 A•

Isolated ELV power source•

OPERATING ENVIRONMENT

Operating temperature from 0 °C to 50 °C•

Operating humidity at 20% to 85% RH (non-condensing)•

Altitude up to 2,000 meters •

Pollution degree 2•

For indoor use only•

STORAGE COMPLIANCE

Storage temperature from –20 °C to 70 °C•

Storage humidity at 5% to 90% RH (non-condensing)•

SAFETY COMPLIANCE

Certiﬁ ed with:

IEC 61010-1:2001/ EN61010-1:2001 (2nd Edition)•

Canada : CAN/CSA-C22.2 No. 61010-1-04•

USA: ANSI/UL 61010-1:2004•

EMC COMPLIANCE

IEC 61326-2002/ EN 61326:1997+A1:1998+A2:2001+A3:2003•

Canada : ICES-001:2004•

Australia/New Zealand: AS/NZS CISPR11:2004•

SHOCK & VIBRATION

Tested to IEC/EN 60068-2

IO CONNECTOR

BNC Connector

DIMENSION (WxDxH)

117.00 mm x 180.00 mm x 41.00 mm (with bumpers)•

105.00 mm x 175.00 mm x 25.00 mm (without bumpers )•

WEIGHT

528 g (with bumpers)•

476 g (without bumpers)•

WARRANTY

One year

PROCESSOR

1.6 GHz Pentium® IV or higher

OPERATING SYSTEM

Windows• ® XP Professional or Home Edition (Service Pack 1 or later), or

Windows 2000 Professional (Service Pack 4 or later)•

BROWSER

Microsoft® Internet Explorer 5.01 or higher

AVAILABLE RAM

512 MB or higher recommended

HARD DISK SPACE

1 GB

VIDEO

Super VGA 800×600 (1024×768 recommended)

PREREQUISITES

Agilent IO Libraries 14.2 or higher (version 15.0• 1 recommended)

Agilent T&M Toolkit 2.1 Runtime version 2.1• 2

Agilent T&M Toolkit Redistributable Package 2.1 patch• 2

Microsoft .NET Framework version 1.1 and 2.0• 2

1 Available in Agilent Automation-Ready CD.

2 Bundled with Agilent Measurement Manager application software installer.

System Requirements

Product Characteristics

and General Speciﬁ cation

Product Speciﬁ cations

and Measurement

Characteristics

WAVEFORMS

Standard Sine, Square, Ramp, Triangle, Pulse, DC

Built-in arbitrary Exponential Rise, Exponential Fall, Negative Ramp

WAVEFORM CHARACTERISTICS

SINE

Frequency range 1 μHz to 20 MHz (1 μHz resolution)

Amplitude ﬂ atness 1

(relative to 1 kHz)

<100 kHz 0.2 dB

100 kHz to 1 MHz 0.35 dB

1 MHz to 20 MHz 0.7 dB

Harmonic distortion 2Frequency range <1 Vpp ≥1 Vpp

DC to 20 kHz –70 dBc –60 dBc

20 kHz to 100 kHz –65 dBc –60 dBc

100 kHz to 1 MHz –50 dBc –45 dBc

1 MHz to 20 MHz –40 dBc –35 dBc

Total harmonic distortion2DC to 20 kHz 0.10%

Spurious (Non-harmonic) output 3 DC to 1 MHz –65 dBc

1 MHz to 20 MHz –65 dBc + 6 dB/octave

Phase noise (10 kHz offset) –115 dBc/Hz

(Typical)

SQUARE

Frequency range 1 μHz to 20 MHz

(1 μHz resolution)

Rise/Fall time <18 ns, 10 to 90% terminated load (50 Ω)

Overshoot <2%

Variable duty cycle 20% to 80% (up to 10 MHz)

40% to 60% (up to 20 MHz)

Asymmetry (@ 50% duty) 1% of period + 5 ns

Jitter (RMS) >50 kHz = 1 ns + 100 ppm of period

≤50 kHz = 10 ns + 100 ppm of period

RAMP, TRIANGLE

Frequency range 1 μHz to 200 kHz (1 μHz resolution)

Linearity <0.2% of peak output

Programmable Symmetry 0% to 100%

PULSE

Frequency range 500 μHz to 5 MHz (1 μHz resolution)

Pulse width (period ≤ 10 s) 40 ns minimum, 10 ns resolution

Overshoot <3%

Jitter (RMS) 300 ps + 0.1 ppm of period

ARBITRARY

Frequency range 1 μHz to 200 kHz (1 μHz resolution)

Waveform memory depth 64 kSa

Amplitude resolution 14 bits/sample (including sign)

Sampling rate 50 MSa/s

Minimum rise/fall time 35 ns

(Typical)

Linearity <0.2 % of peak output

Settling Time <250 ns to 0.5% of ﬁ nal value

Jitter (RMS) 10 ns + 30 ppm

COMMON CHARACTERISTICS

AMPLITUDE

Range 40 mVpp to 5 Vpp (Into 50 Ω load)

80 mVpp to 10 Vpp (Into open circuit)

Accuracy 1

(across 50 Ω load at 1 kHz)

±1% of setting ±5 mV (

±10 mV @ Hi-Z)

Units Vpp, Vrms. dBm

Resolution 4 digits

DC OFFSET

Range (peak AC

DC) ± 2.5 V (Into 50 Ω load)

± 5 V (Into open circuit)

Accuracy 1

(across 50

load)

±2% of offset setting

±1% of amplitude

±5 mV (±10 mV @Hi-Z)

Amplitude Limit Amplitude + Offset limit to witthin ±2.5 V range across 50 Ω

load or ±5 V across open circuit

MAIN OUTPUT

Impedance 50 Ω load (Typical)

Isolation At least 42 Vpk to earth

Protection Short-circuit protected, overload automatically disables main

output

INTERNAL FREQUENCY REFERENCE

Accuracy 4± 8 ppm in 1 year

EXTERNAL FREQUENCY REFERENCE

Input

Lock range

Amplitude level

Impedance

Lock time

10 MHz ±170 Hz

500 mVpp to 5 Vpp

50 Ω

AC coupled

<2 s

Output

Frequency

Amplitude Level

Impedance

10 MHz

632 mVpp (Typical)

Return loss 10 dB (Typical) at 10 MHz

Phase Offset

Range

Resolution

Accuracy

+360 ° to –360 °

0.01 °

20 ns

TRIGGER CHARACTERISTICS

TRIGGER INPUT

Input Level TTL compatible

Slope Rising and Falling, Selectable

Pulse width >100 ns

Input impedence >10 k

Ω, DC coupled

Latency <500 ns

Jitter (RMS) 6 ns (3.5 ns for Pulse)

TRIGGER OUTPUT

Output Level TTL compatible into ≥1 kΩ

Pulse width >400 ns

Output impedance 50

Ω (Typical)

Fanout 4 TTL

Rise time ≤20 ns

1 Add 1/10th of output amplitude and offset speciﬁ cation per °C for operation outside the range of 18 °C to 28 °C.

2 DC offset set to 0 V.

3 Spurious output at low amplitude is –70 dBm, typical.

4 Add 1 ppm/°C (average) for operation outside the range of 18 °C to 28 °C.

MODULATION

Modulation scheme Internal, AM, FM, PM, FSK, PSK, ASK