342 Chapter 9
Analysis in Time Domain (Option 010)
Transformation to time domain
resolution and the measurement range.
Table 9-4 Effects of setting changes
Change in setting Response resolution Measurement range Sidelobe
Widening the sweep range Becomes smaller Becomes narrower Does not change
Setting the window type to maximum Becomes larger Does not change Becomes lower
Increasing the number of points Does not change Becomes wider Does not change
Setting the frequency range and the number of points
Operation
Step 1. Press (or ) to activate the channel you want to set.
NOTE The frequency range and the number of points are common to all of the traces in the
channel. If you want to use different settings, make them on another channel.
Step 2. - Press Sweep Type - Lin Freq to set the sweep type to “linear sweep.”
NOTE When the sweep type is set to other than the “linear sweep,” the time domain function is
not available.
Step 3. Use the following keys to set the sweep range.
Key stroke Function
Sets the start frequency
Sets the stop frequency
Sets the center frequency
Sets the frequency span
Step 4. - Press Points and then enter the number of points.
Step 5. When performing measurement in the low pass mode, press - Transform - Set
Freq Low Pass to adjust the frequency range so that it is appropriate for the low pass
mode. The frequency changes depending on the stop frequency as shown below.
Condition of stop frequency Frequency setting
> 300 kHz × the number of points Start frequency = stop frequency/number of points
< 300 kHz × the number of points Start frequency: 300 kHz
Stop frequency = 300 kHz × number of points
When the frequency settings satisfy the conditions shown above, the Set Freq Low Pass
key is displayed in gray.
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