This Programmable Function Generator uses direct digital
synthesis to provide high performance and extensive
facilities at a breakthrough price. It can generate a
variety of waveforms between 1mHz and 20MHz with a
resolution of 6 digits and an accuracy better than 10ppm.
Direct digital synthesis for accuracy & stability
Direct digital synthesis (DDS) is a technique for generating
waveforms digitally using a phase accumulator, a look-up
table and a DAC. The accuracy and stability of the resulting
waveforms is related to that of the crystal master clock.
The DDS generator offers not only exceptional accuracy and
stability but also high spectral purity, low phase noise and
excellent frequency agility.
A wide range of waveforms
High quality sine, square and pulse waveforms can be
generated over the full frequency range of 1mHz to 20MHz.
Triangle waveforms can also be generated but with
limitations as to the maximum useable frequency.
Variable symmetry/duty-cycle is available for squarewave and
All waveforms can be swept from 0.2Hz to their maximum
frequency in a single sweep at a rate variable between 50
milliseconds and 999 seconds. The sweep is fully phase
Sweep can be linear or logarithmic, single or continuous.
Single sweeps can be triggered from the front panel, the
trigger input, or the digital interfaces. A sweep marker is
External Amplitude Modulation is available for all waveforms.
FSK and Tone modes
Frequency Shift Keying provides phase coherent switching
between two selected frequencies; in Tone mode the output is
stepped asynchronously through a user-defined list of up to
16 frequencies. In both modes the switching source can be
the internal trigger generator, front panel, an external
signal or a remote command.
Easy and convenient to use
All of the main generator parameters are clearly displayed
together on a backlit LCD with 4 rows of 20 characters. Sub
menus are used to set the parameters for each function.
All parameters can be entered directly from the numeric
keypad. Alternatively most parameters can be incremented or
decremented using the rotary encoder.
This system combines quick and easy numeric data entry with
quasi-analogue adjustment when required.
Fully programmable via USB and Addressable RS-232
The generator has both USB and RS-232 interfaces which can
be used for remote control of all of the instrument functions.
As well as operating in conventional single instrument mode
the RS-232 serial interface can also be used in addressable
mode whereby up to 32 instruments can be linked to a single
PC serial port.