B&K Precision 4078 Datasheet

Data sheet

25 MHz Arbitrary / Function Generators

Models 4075 & 4078

4075

Common Features & Benefits

■ 14-bit, 100 MSa/s, 400 k point Arbitrary

Waveform Generator

■ 25 MHz Sine / 25 MHz Square waveforms

■ Predefined Pulse, Ramp, Triangle, Noise, Sin

(X)/X, Exponential and Gaussian waveforms

■ AM, FM and FSK modulation

■ 10 mVpp to 10 Vpp into 50 Ω

■ Large graphical LCD shows a detailed output

waveform representation

■ Fully programmable markers

■ Fully protected output

■ Closed case calibration

■ Arbitrary waveform editing software included

■ SCPI compliant command set

■ Optional GPIB versions available

4078

Industry Leading Performance

Models 4075 and 4078 are versatile high performance function/arbitrary waveform generators with the
largest arbitrary memory depth in their class. The generators combine the ability to produce nearly any
conceivable arbitrary waveform with accuracy and precision and a DDS architecture offering easy to use
conventional function generator capabilities. Arbitrary waveforms have 14 bit amplitude resolution,
100MSa/s sample rate and up to 400,000 points length. Waveforms can be output in continuous, trig­gered, gated or burst modes. Front panel operation is straightforward and user-friendly. The instruments
can be remotely controlled using SCPI-compliant commands via RS232.

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 including electronic design, sensor simulation, functional test or generation of I/Q modulated signals.

Dual Channel Model 4078

■ Both channels offer full functionality. All wave

form parameters such as frequency, amplitude

and offset can be set independently

■ Synchronize both output signals to the same

clock signal (external or internal) and precisely

adjust the phase relationship between the two

signals

■ Economical baseband I/Q signal source

■ Saves cost and bench space

Options

Model 4075 with GPIB interface: Order model
number 4075GPIB
Model 4078 with GPIB interface: Order model
number 4078GPIB

Technical data subject to change
© B&K Precision Corp. 2010

wwww ww..bbkk pprreecc iissiioonn..ccoomm

Tel.: [phone]

25 MHz Arbitrary / Function Generators

odels 4075 & 4078

M

Front panel

▲

Intuitive user interface

These Waveform Generators use a menu-driven
front panel keypad and control knob along with
an easy-to-read graphical LCD to adjust all
waveform parameters, which are visible at one
glance. Arbitrary waveform editing and definition
is flexible and easy: Waveforms can be defined
from scratch by entering data point by point, by

Rear panel

▲

4078 only

Informative

LCD with detailed display of

waveform parameters

Easy-to-use keypad

allows efficient parameter

configuration

loading and modifying predefined built-in wave­forms or by downloading waveforms via the
remote interface, using either the included arbi­trary waveform generation software Wave-X or a
custom program. Standard function generator
waveforms sine, square, ramp and pulse can be
created by pressing a single button.

optional GPIB interface

Model 4078 allows for both

independent and phase synchro-

nized waveform generation

Flexible interface

Built-in 10 MHz external reference is included
at no extra cost (both models).
This input/output let’s you synchronize with
another 4075/4078 generator or to an
external 10 MHz Clock for precise phase
adjustment.

Connect the programmable marker Output to
the Trigger input of additional generators to
create complex polyphase scenarios.

4075 & 4078 10 MHz external reference

22 wwwwww..bb kk pp rreecc iissiioo nn..cc oomm

25 MHz Arbitrary / Function Generators

odels 4075 & 4078

M

Flexible memory management

Unlike other comparable generators, which
typically contain only a few fixed-size memory
locations for waveform storage, the 4075 and
4078 gives users more freedom - the 400000
point flash memory can be allocated to one large
waveform or up to 50 different waveforms, each
with a customizable length.

Versatile noise generation

In Arb mode you can conveniently add noise to
your waveform directly from the front panel and
precisely adjust the scale of the noise amplitude.
Unlike other generators that only produce a
noise waveform, this feature allows you to
choose between generating a noise waveform or
adding noise to an existing waveform.

Programmable Markers

Models 4075 and 4078 provide fully program­mable markers, allowing you to generate a
positive TTL level output signal at the points
specified by address and length up to 4000
points. This feature is available in Arbitrary mode
and can not be found in other comparable
waveform generators. It could be used for
applications requiring polyphase signal
generation, e.g. simulation of a real world 3
phase AC network where one of the phases is
degraded with spikes or noise.

Generate waveforms with ease

The included PC Software allows you to easily
generate, edit and download custom arbitrary
waveforms.
Generate waveforms by importing a textfile, or
define via freehand, point draw or waveform
math. Waveforms can also be uploaded from the
generator for documentation purposes.

33 wwwwww..bb kk pp rreecc iissiioo nn..cc oomm

25 MHz Arbitrary / Function Generators

odels 4075 & 4078

M

Specifications

models

4075 4078

Channels 1 Channel 2 Channels

FF rr eeqquuee nnccyy CChh aarr aacctt eerriissttiiccss

Sine 1 µHz to 25 MHz

Square 1 µHz to 25 MHz

Triangle, Ramp 1 µHz to 5 MHz

Pulse 1 mHz to 10 MHz

Accuracy 0.002 % (20 ppm)

Resolution 12 digits or 1 µHz

AArrbbiittrraa rr yy CC hh aarr aacctt eerriisstt iiccss

Built-in Waveforms Sine, Triangle, Square, Noise, Ramp Up, Ramp

Down, Sine(X)/X, Exponential Up, Exponential

Down, Gaussian

Waveform Length 2 points to 400,000 points

Vertical Resolution 14 bits (16,384 levels)

Noise Add 1% to 100% to output waveform

Sampling Rate 100 MSa/s, Point execution rate adjustable from 10 ns-50 s

Frequency Accuracy: 0.005% (50 ppm)

Resolution: 4 digits

OOuu ttpp uu tt CC hhaa rr aa cctteerr ii ssttiicc ss

Amplitude Range 10 mV to 10 Vp-p into 50 Ω

Amplitude Resolution 3 digits (1000 counts)

Amplitude Accuracy (1 kHz) ± 1% ± 1 mV

Flatness (relative to 1 kHz) ± 0.2 dB to 1 MHz

± 1 dB to 25 MHz

Offset Range ± 5 V into 50 Ω, depending on the

Amplitude setting

Offset Resolution 10 mV with 3 digits resolution

Offset Accuracy ± 1% ± 10 mV into 50 Ω 

Output Impedance 50 Ω typical

Output Protection The instruments output is protected against

short circuit or nominal accidental voltages

applied to the main output connector

WWaavvee ffoorr mm CChh aa rr aacc ttee rriiss tt ii ccss

Harmonic Distortion (sine) DC-20 kHz, -65 dBc

20 kHz-100 kHz, -60 dBc

100 kHz-5 MHz, -45 dBc

5 MHz-25 MHz, -30 dBc

Spurious (sine) DC-1 MHz < -60 dBc

Rise/Fall Time (square, pulse) < 12 ns (10% to 90%) at full amplitude into 50 Ω

Variable Duty Cycle 20% to 80% to 5 MHz (square)

40% to 60% to 10 MHz (square)

50% >10 MHz (square)

Variable Symmetry 10%-90% to 5 MHz (triangle)

Symmetry at 50% < 1 % + 5 ns

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

Pulse Width 20 ns to <(Period-20 ns)

(period 10 µs - 0.1 µs) 10 ns resolution

Variable Edge Time 100 ns to Width/0.625 (50 % duty cycle)

(period 100 µs - 0.16 µs) 10 ns resolution

OOpp eerraa tt iinngg MM oodd eess

Continuous Output continuous at programmed parameters

Triggered Output quiescent until triggered by an internal or

external trigger, at which time one waveform cycle is

generated to programmed parameters. Frequency of

Triggered waveform cycle is limited to 10 MHz in ARB mode

and 5 MHz in DDS mode.

Gate Same as triggered mode, except waveform is executed

for the duration of the gate signal. The last cycle

started is completed

Burst 2-999,999 cycles

Phase -180.0 to +180.0 degrees with 0.1 degree resolution

Trigger Source Trigger source may be internal, external or manual.

Internal trigger rate 0.01 Hz-1 MHz (1 µs – 10 s)

MM oo dd uull aatt iioonn CChh aarr aa cctt eerriisstt ii ccss

Amplitude Modulation

Internal 0.1 Hz-20 kHz sine , square or triangle waveform

variable modulation from 0% to 100%

External 5 Vp-p for 100% modulation, 10 kΩ input

impedance

Frequency Modulation

Internal 0.1 Hz-20 kHz sine wave, square or triangle

External 5 Vp-p for 100% deviation, 10 kΩ input impedance

SSwwee eepp CC hhaa rr aa cctteerr ii sstt iiccss

Sweep Shape Linear and Logarithmic, up or down

Sweep Time 20 ms to 500 s

Sweep Trigger internal, external, continuous or burst

II nnppuuttss aanndd OOuuttppuu tt ss

Trigger IN TTL Compatible

Maximum rate 10 MHz

Minimum width 50 ns

Sync OUT TTL pulse at programmed frequency, 50 Ω source

impedance

Modulation IN 5 Vp-p for 100% modulation

10 kΩ input impedance

DC to >50 kHz minimum bandwidth

Marker Out Positive TTL pulse user programmable in Arbitrary

waveform, 50 Ω source impedance

Reference IN-OUT 10 MHz, TTL compatible, input or output, for

external unit synchronization 50 Ω output impedance

and 1 kΩ input

II nnttee rrnn aall TTrr ii gg ggee rr

Repetition 1 µs to 100 s

Resolution 4 digits

Accuracy +0.002%

GGeenn eerr aall

Store Memory 50 full panel settings at power-off

Arbitrary Memory 400,000 points in flash memory

Dimensions 8.4(213) x 3.5(88) x 12(300) inches (mm) (WxHxD)

Weight Approx. 3 kg (6.6 lbs)

Power 100 VAC-240 VAC ± 10%, 50 VA max.

Temperature Operating 0 ºC to + 50 ºC

Non-operating -20 ºC to + 70 ºC

Humidity 95 % RH , 0 ºC to 30 ºC

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

Accessories

Supplied: CD containing user manual & Wave-X software, null modem serial

interface cable, power cord

44 wwwwww..bb kk pp rreecc iissiioo nn..cc oomm

v022310