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IM DL850E-01EN
3 If you set the real time math channel to RMathX, you can select the RMath waveforms on channels up to
RMathX−1. If the real time math channel is RMath1, you cannot use any other RMath waveforms as math
source waveforms.
4
If you have turned logic sources on, select an input channel of a 720230 logic module. If logic sources
have been turned off, select an input channel of an analog waveform module.
5 The input channels of a 16-CH voltage input module (720220) or 16-CH temperature/voltage input module
(720221) cannot be selected.
Math Delay
The real time math delay is “1.4 μs + the digital filter delay + the math delay.”
The digital filter and math delays vary depending on the type of filter and math operation.
• If you are using the result of a real time math channel as the source waveform for another real time math
operation, the math delays accumulate.
• For details, see the appendix in the Real Time Math (/G3 option) User’s Manual, IM DL850E-51EN.
Internal Processing of Real Time Math
The math source waveforms are 16-bit binary data. If they are only 12 bits long, they are converted to 16 bits.
Internally, the waveforms are converted to floating-point numbers and calculated.
• The math results are converted to 16-bit data in relation to the range (value/div) and are then recorded in
acquisition memory.
• The basic display is 2400 LSB/div (the same as the 16-bit analog waveform module).
•
For details on the internal math expressions, see the appendix in the
Real Time Math (/G3 option) User
’s
Manual, IM DL850E-51EN.
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