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301/302 User Manual

triggered, or may generate a counted burst of waveforms. A built-in

trigger generator, having a programmable period can be used as a

replacement of an external trigger source.

The Model 301/302 generates arbitrary waveforms with 12 bits of

vertical resolution. Any waveform it generates must first be

downloaded to waveform memory.

The arbitrary waveform memory is a bank of 12-bit words. Each word

represents a point on the horizontal waveform scale. Each word has a

horizontal address that can range from 0 to 4,191,280 (16,777,720)

with the 16 Meg option installed) and a vertical address that can

range from -2048 to +2047 (12 bits). Using a high speed clocking

circuit, the digital contents of the arbitrary waveform memory are

extracted and routed to the Digital to Analog Converter (DAC). The

DAC converts the digital data to an analog signal, and the output

amplifier completes the task by amplifying or attenuating the signal at

the output connector.

There is no need to use the complete memory every time an arbitrary

waveform is generated. Waveform memory can be divided into up to

4096 smaller segments and different waveforms can be loaded into

each segment. The various segments may then be loaded into a

sequence table to generate long and complex waveforms. The

sequence table can link up to 4096 segments, while each segment

can loop up to 1 million times. The model 301/302 can store up to 16

different sequence tables, then use these sequences for generating a

sequence of these 16 sequences.

The instrument must be used in conjunction with a host computer. All

of its functions, modes and parameters are fully programmable using

SCPI commands and syntax. There are three ways to program the

Model 301/302, the first being low-level programming of each

individual parameter using SCPI commands. The second alternative

is to use WaveWiz for high-level programming. WaveWiz is a

software package supplied with the 301/302 that simulates a

mechanical front panel. It has all the necessary push buttons, displays

and dials to operate the Model 301/302 in a similar way to using a

bench-top instrument. The third way to program the 301/302 is by

using either the LabVIEW driver.

The Model 301/302 must be programmed to generate waveforms.

Therefore, it is recommended that the user becomes familiar with its

basic features, functions and programming concepts as described in

this and the following chapters.

Options

There is only one option available with the model 301/302. This option

expands the waveform memory from 4 Meg to 16 Meg. The

instrument must be ordered with the 16 Meg option installed, it cannot

Getting Started

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