Home > Products > Discontinued Products > Arbitrary Waveform Generators > Model 8025

 

Was replaced by Model WW1071   Single-channel 100 MS/s waveform generator   Multi-Instrument synchronization   14 Bit vertical resolution, 18-bit offset resolution   1 Meg word waveform memory, 4 Meg word memory, optional   1 ppm clock accuracy and stability   Extensive modulation capabilities AM, FM, Arbitrary FM, FSK, Ramped FSK and Sweep   Waveform sequencing with up to 4096 segments   10 Built-in popular standard waveforms   DDS technology delivers extremely low phase noise signals   GPIB and RS-232 interfaces   ArbConnection software for easy waveform creation & control

100 MS/s Sample Rate The 100 MS/s sample rate allows the vertical accuracy to be converted into excellent performance at high frequencies. This opens up many applications in communication, video and television, telecommunication, radar, and ultrasonics, for example.

14 Bit Resolution The 14-bit resolution provides 16,384 output levels. This means that even audio waveforms can be generated with excellent fidelity. It also allows video - and other complex waveforms - to be generated with small details superimposed on large signals, in order to test the response of receiving systems.

Bench Operation Looking at the instrument as a simple function generator, there are eleven basic waveforms with adjustable parameters. These are sine, triangle, square, pulse, ramp, sinc, Gaussian, exponential up, exponential down, noise, as well as DC. All are accessible from the front panel.

4 Meg Memory The 8025 offers 1 Meg word (4 Meg word optional) memory for arbitrary waveforms. Given the 14-bit resolution, the generator offers enormous power. In addition, the memory can be divided into as many as 4096 segments, which can be looped and linked in many different ways. Using 1 Mword at 25 MS/s to generate a video signal, for example, the duration is 0.04 s, 25 Hz, even without any looping of repetitive elements.

Sequence Generator When the sequencing facilities are invoked, the 8025 becomes truly unique. The memory segments can be linked and repeated in any combination both manually and under programmed control. In the automatic advanced mode, the complete sequence runs continuously and automatically under the control of a pre-programmed table. In the stepped sequence-advance mode, the current segment is looped continuously until a trigger is received, when the next segment is invoked. The single sequence advance mode runs the current segment once only, and then idles until the next trigger is received. There is even a mixed sequence mode in which each segment can be preprogrammed to run under either automatic-advance mode or in stepped advance mode.

Fast Data Transfer Arbitrary waveform data may be quickly transferred to the 8025 via RS-232C or GPIB - IEEE 488.2 - using a very fast DMA mode.

Sample Clock Modulation One of the many attractive features of the 8025 is the sample clock modulation function. In a normal arbitrary waveform generator, to make a frequency modulated sinewave, you have to enter the complete mathematical function. Not so with the 8025: all you need to do is to generate the carrier signal, and then modulate the clock to obtain the required result. The sample clock modulation can be done by internal waveforms - sine, square, triangle, and ramp. Using downloaded arbitrary modulating waveforms, you can generate signals that would be difficult or impossible to define using an equation.

Frequency Shift Keying Frequency shift keying could be accomplished by using the facilities already mentioned, but the 8025 includes an FSK function to simplify operations. A TTL input is used to control the shifting. As a further refinement, the 8025 offers a ramped FSK function, in which the rate of change of frequency is controlled by the ramp time parameter.

Linear Logarithmic Frequency Sweep A linear or logarithmic frequency sweep is offered, and of course the FM functions can be used to define more complicated variations.

Triggering Facilities However versatile the waveform generation systems are made, the need for external control of generation is vital. The triggering facilities of the 8025 match the generation functions in versatility. In the simplest mode, signals are output continuously. The 8025 also offers the triggered mode, gated mode, external burst mode, and internal burst mode, all of which can use an external trigger signal or an internal trigger. The use of external sources to prompt the switching of segments has already been mentioned. Any point in a wave can be designated as a start point. On receipt of a trigger, the wave starts at this point, runs to the end, restarts seamlessly at the beginning, and stops at the point before the trigger point. Separate breakpoints are programmable in each channel, triggerable from SCPI commands via GPIB or RS-232C, or by signals at the trigger input.

ArbConnection Unlimited Source of Arbitrary Waveforms. With the ArbConnection software you can control instruments functions, modes and features. You can also create virtually an unlimited variety of test waveforms. Freehand sketch allows you to draw your own custom waveform for quick analysis of analog signals. You can use the built-in equation editor to create your own exotic functions. Add or subtract components of a Fourier series to characterize digital or analog filters or, inject random noise into a signal to test immunity to auxiliary noise.

Applications General purpose waveform generation. General purpose arbitrary generation. Ultrasonics. Ultrasonic NDT systems. Video and Television. Telecommunication. Communications signals. Radar chirped signals. Electronic drive for medical, chemical, and mechanical applications. Electronic drive for vibration tables. Automatic test systems.

Options
Name  Description  Option 1  4M memory
Accessories
Name  Description  Sync Cable  for Multiple Instrument Synchronization  S-Rack mount  19" Single Rack Mounting Kit  D-Rack mount  19" Dual Rack Mounting Kit  Case Kit  Professional Carrying Bag
Note: Options and Accessories must be specified at the time of your purchase.