9-7
IM 701730-01E
Waveform Computation
9
Turning the Computed Waveform Display and Computed Waveform Label ON and
OFF
See section 9.1.
Operator
Select the binary computation operator Bin as the operator of Math1 and Math2. The
waveform to be computed can be converted to a digital waveform of 0s and 1s with
respect to the specified threshold level.
Waveform to Be Computed
The waveforms on which computation can be performed are as follows:
• For the DL1735E/DL1740E/DL1740EL
Computation Name
Source
Math1
One channel from CH1 to CH4
Math2
One channel from CH1 to CH4 or Math1
• On the menu, CH1 to CH4 may be indicated as C1 to C4 and Math1 as M1.
• Math1 and Math2 can be computed simultaneously.
• For the DL17420E
Computation Name
Source
Math1
CH1 or CH2
• On the menu, CH1 to CH2 may be indicated as C1 and C2.
Scaling
Scaling is not available in binary computation. You can select Auto or Manual on the
menu, but the computed result is not affected. The scaling level is fixed.
Unit of Computed Waveforms
The operation is the same as for addition, subtraction, and multiplication. See section 9.2.
Smoothing
The operation is the same as for addition, subtraction, and multiplication. See section 9.2.
Threshold Level for Binary Computation
You can set the level (voltage value if set to voltage) for setting the data values to 1 or 0
in binary computation for computed waveforms Math1 and Math2, separately (see the
figure above). The selectable range is eight divisions within the screen. The resolution is
0.01 divisions.
Thr Upper: Set the level used to switch from 0 to 1.
Thr Lower: Set the level used to switch from 1 to 0.
1
0
Thr Lower (level used to switch from 1 to 0)
Thr Upper (level used to switch from 0 to 1)
Waveform to Be Computed
Computed Waveform
Effects of Linear Scaling
Even when linear scaling is performed on the channel to be computed, it does not affect
the binary computation.
Maximum Record Length That Can Be Computed
The operation is the same as for addition, subtraction, and multiplication. See section
9.2.
9.3 Performing Binary Computation