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IM 701240-01E
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App
Index
Explanation of Functions
Probe Attenuation or Current-to-Voltage Conversion Ratio «For procedures, see section 5.6.»
For voltage (current) measurement, a probe is normally used in connecting the circuit
being measured to the signal input terminal. Using a probe has the following advantages.
• Prevents disturbing the voltage and current of the circuit being measured.
• Inputs the signal with no distortion.
• Expands the measurable voltage (current) range of the SL1400.
When using a probe, the attenuation setting on the SL1400 must be set equal to the
probe attenuation or current-to-voltage conversion ratio so that the measured voltage
(current) can be read directly.
The SL1400 has the following attenuation settings: 1:1, 10:1, 100:1, 1000:1, 10A:1V,
*1
and
100A:1V.
*2
If you are using a probe other than the ones provided as accessories (sold
separately), set the attenuation ratio on the SL1400 according to the attenuation of the probe.
*1 Output voltage rate: 0.1 V/A
*2 Output voltage rate: 0.01 V/A
Note
Use a probe that matches the input capacity of each module. Otherwise, the capacity cannot be
adjusted.
Bandwidth Limit «For procedures, see section 5.7.»
A bandwidth limit can be applied for each module. By limiting the bandwidth, you can
eliminate high frequency components (such as high frequency noise) from the input
signal for waveform observation.
Linear Scaling «For procedures, see section 5.11.»
When measuring the voltage (current), strain, or frequency (number of rotations, period,
duty cycle, power supply frequency, pulse width, pulse integration, and velocity), there
are two methods of linear scaling: “AX+B” and “P1-P2.”
AX+B
Scaling is performed using the specified scaling coefficient A and offset B according to
the equation shown below. Cursor measurement values and automated measurement
values of waveform parameters are displayed using scaled values. You can also assign
a unit to the linearly scaled value.
Y = AX + B (where X is the measured value and Y is the scaling result)
P1-P2
Specify arbitrary scale values (P1:Y and P2:Y) for the measured values of two arbitrary points
(P1:X and P2:X). The conversion equation (y = ax + b) is derived from these four values.
Measurement range
P1
P2
P1:X
P2:X
P1:Y
P2:Y
y = ax + b
Measured value
Scale value
In addition, the current input value can be loaded into P1:X or P2:X.
2.2 Setting the Horizontal and Vertical Axes