4079B - B&K PRECISION CORPORATION

Arbitrary/Function Waveform Generators

4075B Series

Data Sheet

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Technical data subject to change

Features

■14-bit, 200 MSa/s, 16 Mpts arbitrary

waveform generator

■Generate sine waveforms up to 80 MHz

■Bright color LCD display

■Linear and logarithmic sweep

■AM/FM/FSK modulation

■Variable DC offset

■Adjustable duty cycle

■Output ON/OFF button

■Internal/external triggering

■Gate and burst mode

■Fully programmable markers

■Store/recall up to 49 instrument settings

■Standard USBTMC interface (all models) and

GPIB interface (50 MHz & 80 MHz models

only) supporting SCPI commands

■Closed case calibration

■Short circuit protection for resistive and

capacitive loads on outputs and overvoltage

protection on inputs

Point-by-Point Signal Integrity

The 4075B Series Arbitrary/Function Waveform

Generators are versatile high-performance

single- and dual-channel arbitrary waveform

generators with large arbitrary memory depth. The

instruments provide variable output voltages from

0 to 10 Vp-p into 50 ohms or up to 20 Vp-p into

open circuit and a continuously variable DC offset

that allows the output to be injected directly into

circuits at the correct bias level.

These generators combine the benefits of DDS

(direct digital synthesis) and true AWG (arbitrary

waveform generator) architectures without the

limitations of either. Standard waveforms such as

sine, square, and triangle are generated with a

DDS chip, delivering great frequency resolution at

a low cost. Custom arbitrary waveform generation

is implemented with a true point-by-point design,

offering improved signal integrity by producing

significantly less jitter and distortion compared

to a DDS-only architecture. This point-by-point

generation capability allows these instruments

to be used for simulating reliable clock signals,

generating triggers, or validating serial data

buses.

Additionally, these generators can be used with

B&K Precision’s waveform editing software

WaveXpress to create complex arbitrary

waveforms.

Extensive features such as internal or external

AM, FM, and FSK modulation along with

versatile sweep capabilities and variable edge

pulse generation make these generators suitable

for a wide range of applications.

Model 4075B 4078B 4076B 4079B 4077B 4080B

Channels 1 2 1 2 1 2

Sine frequency range 1 µHz – 30 MHz 1 µHz – 50 MHz 1 µHz – 80 MHz

Square frequency range 1 µHz – 30 MHz 1 µHz – 50 MHz 1 µHz – 60 MHz

Arbitrary waveform length 1 Mpts 4 Mpts 16 Mpts

For more information, visit www.bkprecision.com/WaveXpress

■ Both channels offer full functionality and all

parameters can be set independently

■ Synchronize the phase of both channels with

the push of a button

Dual-channel models

Applications

These generators are suitable for applications

such as electronic design, sensor simulation,

functional test, or generation of I/Q modulated

signals.

www.bkprecision.com

Arbitrary Waveform Generators

4075B Series

Color LCD display

Front panel Numeric

keypad

Rotary control

knob

Output On/Off

button

Channel outputs

Menu function

keys

Lin/Log

sweep key

Power button

Waveform

parameter keys

Channel selection key

(dual channel models only)

Modulation

key

Utility key

Intuitive user interface

Easily change all waveform parameters using the intuitive menu-driven front panel keypad, control knob, and easy-to-read LCD. Convenient waveform and range

selection buttons let users make quick and precise adjustments to the output signal.

Multi-unit/channel synchronization and external triggering

Use the built-in 10 MHz external reference input and output, external trigger input, and programmable marker output to synchronize multiple units or channels.

The generator can be connected with another generator or to an external 10 MHz clock for precise phase adjustment. The Sync output connector can be used to

generate a positive TTL pulse output on each waveform cycle. An external trigger input connector is also available to trigger the instrument via an external TTL

signal.

Rear panel

GPIB interface

(50 MHz & 80 MHz models only)

USB

interface

Chassis

ground

Cooling fan

External 10 MHz

reference input and output

Sync output

BNC

External trigger

BNC

Modulation

input BNC

Marker out

BNC

SCPI-compliant

programming

The generators can be

programmed remotely

via the USB and GPIB

interface using SCPI

commands.

Extensive modulation

functions

The generators provide AM,

FM, and FSK modulation

schemes along with combined

AM plus FM capabilities.

Users can also simulate

analog VCOs and VCAs by

inputting a voltage to the

external modulation input.

www.bkprecision.com

Arbitrary Waveform Generators

4075B Series

Versatile arbitrary waveform generation

The 4075B Series gives users more freedom

by allowing the flash memory to be allocated

via start address and length parameter setups.

For instance, a model 4080B user could

generate one large 16M-point waveform or

up to 49 different waveform setups totaling

16 Mpts in one memory bank. Up to eight

non-volatile memory banks are available to

store arbitrary waveforms with 14-bit vertical

resolution.

Easy noise generation

Conveniently add noise to your waveform directly

from the front panel and precisely adjust the

scale of the noise amplitude. This feature allows

you to choose between generating a noise

waveform and adding noise to an existing

waveform.

The 4075B Series provides fully programmable markers that allow you to generate a positive TTL level

output signal at the points specified by address and length up to 4000 points. It could be used for

applications requiring triggering at specific points in the arbitrary waveform for precise synchronization

between two signals, e.g. simulation of a real world 3-phase AC network where one of the phases is

degraded.

From the front panel, waveforms can be defined

from scratch by entering data point-by-point or

by loading and modifying predefined waveforms.

The WaveXpress waveform editing software is

also provided for users to easily generate, edit,

and upload custom arbitrary waveforms to the

generator via the remote interface. Create

waveforms in the software by importing a text

file or define via freehand, point draw, and

waveform math functions.

Programmable markersWaveform creation tools

Flexible memory management

WaveXpress software

Master unit 1 unit 2 unit

Multi-unit/channel synchronization

Marker Out to Trig In

Ref Out to Ref In

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Arbitrary Waveform Generators

4075B Series

Specifications

Model 4075B 4078B 4076B 4079B 4077B 4080B

Channels 1 2 1 2 1 2

Maximum frequency 30 MHz 50 MHz 80 MHz

Waveforms

Standard Sine, Square, Triangle/Ramp, Pulse

Built-in arbitrary Sine, Triangle, Square, Noise, Ramp Up, Ramp Down, Sine(X)/X, Exponential Up, Exponential Down, Gaussian

User-defined arbitrary 1 Mpts x 8 memory banks per ch 4 Mpts x 8 memory banks per ch 16 Mpts x 8 memory banks per ch

Operating Modes & Modulation Types

Operating modes Continuous, Triggered, Burst, Gated

Modulation types AM, FM, FSK

Sine

Frequency range 1 μHz to 30 MHz 1 μHz to 50 MHz 1 μHz to 80 MHz

Resolution 1 μHz, up to 12 digits

Amplitude flatness (relative to 1 kHz)

fOUT ≤1 MHz ± 0.2 dB

fOUT ≤50 MHz ± 1.0 dB

fOUT ≤80 MHz ± 2.0 dB

Harmonic distortion (typical)

fOUT ≤100 kHz (10 Hz -100 kHz) -65 dBc

fOUT ≤5 MHz (100 kHz - 5 MHz) -45 dBc

fOUT ≤80 MHz (5 MHz - 80 MHz) -35 dBc

Spurious

fOUT ≤1 MHz (DC - 1 MHz) -60 dBc

fOUT < 20 MHz (1 MHz - 20 MHz) -50 dBc

Phase noise (fOUT =10 MHz)

10 kHz offset -110 dBc/Hz

Square

Frequency range (Square) 1 μHz to 30 MHz 1 μHz to 50 MHz 1 μHz to 60 MHz

Rise & Fall time < 5 ns (10% to 90%) at full amplitude into 50 Ω

Duty Cycle

20% to 80% to 10 MHz,

40% to 60% to 30 MHz,

50% > 30 MHz

Asymmetry (50% duty cycle) 1% of period ± 5 ns

Aberrations < 5% + 50 mV

Jitter < 70 ps rms (typical)

Ramp & Triangle

Frequency range 1 μHz to 5 MHz

Resolution 1 μHz, up to 12 digits

Symmetry

1 uHz to 500 kHz: 0%-100%,

500 kHz to 2 MHz: 10%-90%,

50% > 2 MHz

Linearity <0.1% of peak output (1 µHz to 250 kHz)

Pulse

Frequency range 1 mHz to 25 MHz

Resolution 1 μHz

Pulse width 20 ns minimum, 10 ns resolution, 999 s max

Variable edge time <5 ns (Fast setting) to pulse period (1)

Jitter < 50 ps rms (typical)

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Arbitrary Waveform Generators

4075B Series

Specifications (cont.)

Sampling Rate 200 MSa/s, point execution rate adjustable from 5 ns – 100 s

Vertical Resolution 14 bits (16,384 levels)

Noise Add 1% to 100% to output arbitrary waveform

Bandwidth 100 MHz max (2-point waveform length)

Frequency Accuracy: ± 0.002%, Resolution: 4 digits or 1 ps

Rise and Fall Time < 5 ns (typical)

Jitter < 50 ps rms (typical)

Output Characteristics

Signal Output

Output Impedance 50 Ω (typical)

Output Protection Protected against short circuit or accidental voltage applied to the main output connector (2)

Amplitude

Range 10 mV to 10 Vp-p into 50 Ω

Resolution 4 digits (9,999 counts)

Units Vpp, Vrms, or dBm

Accuracy ± 1% ± 20 mV of the programmed output value from 1 V – 10 V,

± 1% ± 1 mV of the programmed output value from 50 mV – 999 mV

DC Offset

Range ± 4.99 Vpk into 50 Ω

Resolution 1 mV with 4 digits resolution

Units VDC

Accuracy ± 1% ± 10 mV into 50 Ω

Frequency

Accuracy ± 10 ppm for DDS waveform, ± 20 ppm for arbitrary mode

Phase -180 to +180 degrees with 0.1 degree resolution

Modulation Characteristics

Amplitude Modulation (AM)

Carrier Sine, Square, or Triangle

Source Internal, External

Internal Modulation 0.01 Hz - 20 kHz

Depth 0% to 100%

Frequency Modulation (FM)

Carrier Sine, Square, or Triangle

Source Internal, External

Internal Modulation 0.01 Hz - 20 kHz

Deviation 1 µHz to max frequency / 2

Frequency-shift Keying (FSK)

Carrier Sine, Square, or Triangle

Source Internal, External

Rate ≤1 MHz

Model 4075B 4078B 4076B 4079B 4077B 4080B

Arbitrary Waveform Characteristics

Waveform Length 2 points to 1,048,576 points 2 points to 4,194,304 points 2 points to 16,777,216 points

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6 www.bkprecision.com

Arbitrary Waveform Generators

4075B Series

Sweep Characteristics

Sweep Shape Linear and Logarithmic, up or down

Sweep Time 10 ms to 500 s

Sweep Trigger Internal, External, Continuous, or Burst

Burst Characteristics

Waveforms Sine, Square, Triangle, Pulse, Arb

Count 1-999,999 cycles

Trigger Source Manual, Internal, External

Inputs and Outputs

Trigger IN

TTL Compatible

Maximum rate: 20 MHz

Minimum width: 20 ns

Input impedance: 10 kΩnominal

Sync OUT TTL pulse at programmed frequency, 50 Ωimpedance

Modulation IN

5 Vp-p for 100% modulation

10 kΩinput impedance

DC to 50 kHz bandwidth

Marker OUT Positive TTL pulse, user programmable in arbitrary waveform, 50 Ωimpedance

External Reference OUT 10 MHz clock for synchronization, TTL, 50 Ω impedance

External Reference IN 10 MHz from an external source, >1 kΩ impedance

Internal Trigger

Repetition 1 μs to 100 s (0.01 Hz – 1 MHz)

Resolution 4 digits

Accuracy ± 0.002%

General

Display Resolution 400 x 240 dots

Storage Memory 50 full panel settings at power-off, including last working setup

Dimensions (W x H x D) 213 mm x 88 mm x 300 mm (8.4” x 3.5” x 12”)

Weight 3 kg (6.6 lbs)

AC Input 100 - 240 V ±10%, 50 - 60 Hz ±5% (<40 VA)

Temperature 0° C to +50° C (operating)

-20° C to +70° C (non-operating)

Humidity

95% RH, 0° C to 30° C

75% RH to 40° C

45% RH to 50° C

EMC According to EN55011 for radiated and conducted emissions

Electrical Discharge Immunity According to EN55082

Safety Specifications According to EN61010, CE approved

Three-Year Warranty

Included Accessories Power Cord, Manual on CD, USB Type A to Type B Cable, Certificate of Calibration

Model 4075B 4078B 4076B 4079B 4077B 4080B

(1) Depending on pulse width.

(2) Output turns off automatically when an overload is applied. The instrument can tolerate shorts to ground indefinitely.

Remote Interface USB (USBTMC-compliant) USB (USBTMC-compliant) and GPIB

Specifications (cont.)