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Appendix C
Figure 44: An A/D per channel and a DC-to-DC converter for each A/D provides channel-to-channel
Input channel return references are effectively separate instruments when the inputs are
isolated. This individual isolation now allows the ground reference of each channel to
measure at the level of this common mode voltage, up to ±500 V. This capability allows some
new application ideas to flourish.
Measurement of two signals, as shown in
ground references: each signal input (signal 0 and signal 1) has a separate return reference;
additionally, the PC has a third ground reference. This scheme can be extended for many
signal inputs, such as 48 inputs in a single small measurement box, for a total of 49 different
ground references.
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isolation, where each signal can float to its own ground reference.
Figure
45, can now have essentially 3 separate
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