HP 54645A, User'S And Service Manual

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Saving and Recalling the Configuration
With the HP 54645A/D Oscilloscopes, you can save traces and the
oscilloscope setup. Traces are stored in trace memories, and
front-panel setups are stored in setup memories.
Using memories to save and recall configurations
Trace memory
Two trace memories, also called pixel memories, are available in the
HP 54645A/D. These allow you to save the visible portion of the
acquisition—the displayed waveform—for later recall and comparison with
other measurements. To ensure repeatability of the measurement, should
you decide to repeat it after recalling a result from trace memory, the setup is
saved with the waveform, and can be independently recalled. The two setup
memories associated with the trace memories are independent of the 10
regular setup memories.
The normal application for trace memory is quick comparison of
measurement results. For example, you might make a measurement on a
known good system, save the result in trace memory, then make the same
measurement on a known bad system and recall trace memory to see the
differences.
Add an Interface Module to Make Memory Non-Volatile
Trace memory is normally volatile—saved data will be lost when you turn the
oscilloscope off. Adding an interface module, such as the HP 54650A HP-IB
Interface, or HP 54652A/B or HP 54651A RS-232 Interface, makes the trace
memory non-volatile—data is saved, even with the oscilloscope turned off.
The following figure shows the trace memory softkey menu on the
HP 54645D Mixed-Signal Oscilloscope with the Measurement/Storage Module
( HP 54659B) installed. Without the module, two trace memories are
available, and the softkey labels show Trace Mem 1 and Trace Mem 2.
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