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1
Overview
1.1 Features
The U8793, MR8790, and MR8791 are Memory HiCorder units designed to output basic waveforms
such as sine waves and rectangular waves, user-created waveforms, logic patterns, and other
signals. (Models vary by the type of waveform they can output.) Since a single Memory HiCorder
can accommodate the U8793, MR8790, or MR8791 along with one or more measurement units, it
is possible to both measure and generate waveforms with one instrument.
U8793 Arbitrary Waveform Generator Unit
Isolated-channel
output
Each unit provides two channels of output. Since output channels are
isolated from the host Memory HiCorder’s chassis as well as from each
other, the instrument can be connected to other devices that operate at
a different potential. (The maximum rated terminal-to-ground voltage is
limited to 33 V AC RMS or 70 V DC.)
Maximum output
voltage of 15 V
The unit can output up to 15 V. This capability eliminates the need to
connect the unit’s output to an external ampli er prior to simulating
a signal from an automotive sensor or other device, enabling output
signals to be applied directly.
Channel synchronization
Phase can be set between channels on the same unit and between
channels on different units.
Sweep functionality
Sweep functionality is provided for frequency, amplitude, offset, and
duty (pulse waves only) for FG waveforms and arbitrary waveforms.
Program function
Up to 128 steps can be combined to create output sequences. Users
can set an output waveform (FG waveform, sweep waveform, or
arbitrary waveform) and a loop count for each step.
Observed
waveform output
The unit can load waveform data measured by the Memory HiCorder
and then output a waveform that is identical to the observed waveform,
enabling use in applications such as reproduction testing.
MR8790 Waveform Generator Unit
Isolated-channel
output
Each unit provides four channels of output. Since output channels are
isolated from the host Memory HiCorder’s chassis as well as from each
other, the instrument can be connected to other devices that operate at
a different potential. (The maximum rated terminal-to-ground voltage is
limited to 33 V AC RMS or 70 V DC.)
High-precision
DC output
Thanks to its ability to generate high-precision DC output with an output
accuracy of ±0.6 mV, the MR8790 can generate output simulating the
minuscule voltage variations of sensor output.
MR8791 Pulse Generator Unit
Multichannel
output
Each unit provides eight channels of output. Output channels are
isolated from the host Memory HiCorder’s chassis. (Output channels
are not isolated from each other.) (The maximum rated terminal-to-
ground voltage is limited to 33 V AC RMS or 70 V DC.)
Wide selection
of output modes
Depending on the con guration, each channel can generate
independent pulse output, or all channels can generate synchronized
pattern output. In addition, users can select either TTL level logic output
or open-collector output as the output type (for each channel).
1
Overview
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