Models 296 and 295
50 MS/s Synthesized Multichannel Arbitrary
Waveform Generators
Up to 4 Independent Channels
10 Standard Functions (sine to 20 MHz, square to 25 MHz)
Up to 50 MS/s Sampling with 12-Bit Vertical Resolution
Waveform Sequencing of up to 4,096 Segments (Model 296 only)
Frequency Control of Individual Sequence Segments (Model 296 only)
16-Bit Digital Output to 50 MS/s (Model
296 only)
Optional 100 Vpp Output
Versatile Interchannel Triggering, Summing and Phase Control
Frequency Sweep
Amplitude and Suppressed Carrier Modulation
Graphical User Interface
Front Panel Waveform Creation/Editing Tools
Floppy Disk Drive
GPIB and RS-232 Interfaces
Compatible with Waveform DSP
SCPI Compatible
Models 296 and 295 combine sophisticated performance with ease of use in a way previously not available in
arbitrary waveform generators. Model 295 is the basic model. Model 296 adds advanced waveform sequencing capability up to 4,096 waveform segments for complex waveform generation. It also provides a 16 bit digital output on each channel.
Both models can contain up to four separate channels. When run independently, each channel is essentially a stand-alone arbitrary waveform generator. When in master/slave mode, phase relationships between channels can be set by the user. Each channel outputs 15 Vp-p (into 50 Ω load) at 50 MS/s sampling frequency maximum or can output 100 volts peak-to- peak when Option 007 is installed. Each channel has a high-speed clock output that runs at a maximum of 100 MHz.
Arbitrary waveforms can be created and stored to nonvolatile RAM or on the standard MS-DOS™ compatible 3.5-inch, high-density disk drive. In addition, ten commonly used synthesized functions are built in.
The graphic user interface greatly simplifies creating and editing waveforms, which can be viewed on an oscilloscope. A mouse (provided) is used to draw on a scope when creating waveforms and to make selections on the graphical interface when setting up the instrument.
Arbitrary waveforms may be created from
the front panel using the mouse and any of four modes: free hand, line draw, line list, and mathematical expressions. In addition, extensive waveform editing tools enable the user to control waveform shapes precisely. The editing tools make it easy to modify existing waveforms. This is particularly useful in such applications as characterization testing. For instance, amplitude may be modified continually in order to characterize performance of the unit under test. For more complex applications, waveform linking, looping and sequencing allow users to create long, complex waveforms.
Versatile interchannel capabilities are provided. An internal summing bus allows waveforms from multiple channels to be summed together. Other interchannel capabilities include setting phase shift between channels, linking waveforms together and triggering one channel from another.
Waveforms, sequences, and entire instrument set-ups can be stored in the internal nonvolatile 60 kB RAM or on disk via the disk drive.
It’s Easy to Create Any Waveform. Models 296 and 295 take the limits off your ability to simulate the signals you are faced with in the real world.
Built-in features make interactive control of complex waveforms and instrument set-up simple. Waveforms can be created, copied, edited, downloaded, and sequenced, all with a few clicks of the mouse. The 296 and 295 provide a complete set of tools that enables you to specify all kinds of waveforms in a number of ways, from precise mathematical description to “what-if” freehand sketching. And modifying waveforms is a snap with tools such as Vertical Resize and Vertical Move. The sophisticated user interface gives you access to all the power of the 296 and 295, with a flexibility in waveform creation never before
5
Model 296
Typical math expression screen.
Amplitude modulated signal generated by the expression shown on the math expression screen above.
Scope Edit screen.
Scope shows waveforms created with Line Draw/Line List (top) and Freehand Draw (bottom).
Summing screen.
Scope illustrates summing. Top: Clean square wave. Middle: Noise. Bottom: Summed waveform (square wave with noise).
available.
An internal memory of 60 kB is provided for storing the waveforms you create. Storing waveforms created or captured elsewhere is no problem either. Simply download waveforms over the GPIB or RS-232 interface or through the standard 3.5-in disk drive. You can download waveforms generated in Wavetek’s WaveForm DSP arbitrary waveform creation software or directly from a DSO (with Option 005). Or use the disk drive to load ASCII files generated from spreadsheet programs such as Microsoft Excel® or Borland’s Quattro Pro®.
Use Math Expressions. You can create waveforms with mathematical precision by entering math expressions using the numerical keys on the front panel.
Use Line Draw/Line List and Freehand Draw. For waveforms with straight lines, as in pulse or digital applications, Line Draw allows you to use the mouse to draw the lines on an oscilloscope. Lines may also be created using Line List, which allows you to enter the vertices of each line with ampli-
tude and time value. For other kinds of applications, Freehand Draw gives the flexibility of using the mouse to draw a waveform on the oscilloscope in much the same way as with a pencil on paper. This makes tasks like inserting spikes on waveforms easy.
Sum Multiple Channels to Create Complex Waveforms. With the internal analog sumbus, you can sum waveforms from two channels together and output the sum as a complex or modulated waveform. The optional high voltage and external summing module allows three channels and an external signal to be summed.
Create Long, Complex Waveforms with Linked Sequence Operation. Up to 4,096 waveforms can be linked together with the Model 296. Up to 4 waveforms can be linked together with the Model 295. Loop count and advance conditions for each waveform are user programmable.
Trigger Operation. Each channel has its own internal trigger generator and external trigger input. Multiple channel triggering and versatile interchannel triggering are also
provided.
More Tools Make Editing Easy. Models 296 and 295 give you easy ways to modify waveforms you’ve created. For example, you can copy and insert portions of existing waveforms, move individual waveform points, and increase or decrease the amplitude of all or part of the waveform.
Digital Output (296 only). Each channel provides a 16-bit digital output programmable to 50 MHz.
Specifications
NOTE: Specifications apply after a 20-minute warm-up.
Standard Waveforms
Sine, square, triangle, pseudo-random noise, positive ramp, negative ramp, positive haversine, negative haversine, sin x/x and DC.
6
Loading...