Racal Instruments 3162A/B, User Manual

Page: 21 / 144

User Manual 3162A/B
Getting Started 1-9
CPU circuit and re-routed to the bus on the backplane for direct memory
access by the host computer.
The Model 3162B has separate arbitrary waveform memories for each channel.
Each channel can be loaded with different waveforms. The only limitation is that
if you divide channel A memory into smaller segments, the same divider is
applied automatically to channel B.
Sequenced
Waveforms
The Model 3162B employs a sophisticated circuit that allows dividing the
memory into smaller segments, linking of the segments in user-defined order,
and repeating of each linked segment up to one million times. In addition, each
segment can be programmed with a unique clock rate. The sequence circuit
is useful for generating long waveforms with repeated sections. The repeated
waveform has to be programmed once, and the repeater will loop on this
segment as many times as selected. When in sequenced mode, there is no
loss of time between linked or looped segments. Figure 1-6 shows an example
of a sequenced waveform. Assume the waveforms in Figures 1-3 through 1-5
were placed in segments 1 through 3.
Figure 1-3, Segment 1 – Sin (x)/x Waveform