LW120 User Manual
Figure 1-4, ArbExplorer - FM Wave Composer
Description
Two Channels
Output Functions
Frequency
Detailed functional description is given following the general description
of the features, functions, and options available with the LW120.
The LW120 is a dual channel arbitrary waveform generator. Although
the two channels share a single sample clock source, each channel
can be controlled separately to generate different waveform, amplitude
and sequence. Having a single sample clock source is an advantage in
a dual-channel configuration because it allows tight control over inter-
channel synchronization and leading edge start phase where the initial
skew between the two channels is just a few nanoseconds.
Model LW120 is completely digital. There are no analog functions
resident in its hardware circuits. Data has to be downloaded to the
instrument for it to start generating waveforms. The instrument can
generate a few standard functions such as sine wave, triangular wave
and square wave. Each time that a standard function is required, the
instrument calculates its coordinates and places them in the waveform
memory. Therefore, every time a standard function is selected, minimal
time is required for the controller to compute the function and load its
data to the waveform memory.
Waveform frequency is programmed with 10 digits. Frequency
accuracy of the output waveform is determined by the clock reference.
The internal reference oscillator provides 100ppm accuracy and
1-4 Getting Started
