B&K Precision 4045B - Datasheet - Manual

20 MHz DDS Sweep Function Generator
with Arb Function
Model 4045B
Data Sheet
www.bkprecision.com Technical data subject to change
© B&K Precision Corp. 2014
The model 4045B is a high-performance
20 MHz DDS (direct digital synthesis) function
generator with arbitrary waveform capability.
Generating stable and precise sine, square,
triangle, and arbitrary waveforms, this instrument
provides variable output voltages from 0 to 10
Vpp into 50 Ω (up to 20 Vpp into open circuit),
linear and logarithmic sweep, AM/FM modulation,
a built-in counter, and a continuously variable DC
offset that allows the output to be injected directly
into circuits at the correct bias level. Separate
output amplitude and DC offset amplifiers let you
set a large DC offset (e.g. ± 4.99 V ) with a
small amplitude output signal (e.g. 10 mV), a
feature typically found in more expensive
generators.
The 4045B combines a traditional DDS and a
true arbitrary generator in one unit, giving users
the benefits of both technologies. Using DDS
technology, waveforms can be generated with high
frequency resolution at a low price. Due to the
inherent limitations of this architecture, not all
points from the waveform memory are used, and
points may be skipped at higher frequencies. This
leads to significantly more jitter and higher
Features & Benefits
■ 12-bit, 50 MSa/s, 1k point arbitrary waveform
generator
■ Sine and square waveforms up to 20 MHz
■ Triangle/ramp waveforms up to 2 MHz
■ Bright color display with waveform preview
■ Linear and logarithmic sweep
■ AM/FM modulation
■ Independent output and DC offset amplifiers
allow for small amplitude output signals with
large DC offsets
■ Low-jitter square wave generation
■ Adjustable duty cycle
■ Output ON/OFF button
■ Internal/external triggering
■ Gate and burst mode
■ Built-in counter
■ USB interface
■ SCPI-compliant command set
■ Arbitrary waveform editing software and
remote control application software provided
■ Short circuit and overvoltage protection on all
inputs and outputs
distortions on non-repetitive waveforms and
sometimes small details of the waveforms stored
internally will be missing from the output signal.
The true arbitrary waveform section generates
point by point waveforms with lower jitter, high
resolution, and true representation of the
required waveform.
Due to the arbitrary waveform capability of
the 4045B, the instrument is able to generate
low-jitter square waves with greater edge
stability. The improved signal integrity allows
these generators to be used for simulating
reliable clock signals, generating triggers, or
validating serial data buses.
This model is suitable for education and other
applications that require DDS function
generators with sweep, modulation, and arbitrary
waveform capabilities.