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参数资料
型号： 2532
厂商： B&K Precision
文件页数： 47/70页
文件大小： 0K
描述： OSCOPE 40MHZ DIGITAL STORAGE
产品目录绘图： 25xx
特色产品： DSO Series
标准包装： 1
系列： 2532
类型： 工作台 - 数字
带宽： 40MHz
通道： 2
显示器类型： LCD - 彩色
接口： USB
功能： 记录、回放、保存、趋势
探头类型： 无源 10:1（2）
采样率（每秒）： 500M
输入阻抗： 1M - 13pF
上升时间（标准值）： 8.8ns
电压 - 输入（最大）： CAT II 300V
电源电压： 100 ~ 240VAC
包括： 探针，软件，USB 线缆
其它名称： BK2532
Explanation of Figure 3-16:
In this example the position at the center graticule is 3kHz (Pos: 3.00 kHz), the frequency of the second
harmonic. The vertical scale is set to 100mVrms/Div and the horizontal scale is set to 12.5kHz (1.25kHz x
10 zoom factor).
The window type is Blackman
To use the Math FFT mode, you need to perform the following tasks:
1. Set up the source YT (time-domain) waveform.
●
●
●
Press AUTOSET to display a YT waveform.
Turn the VERTICAL POSITION knob to move the YT waveform to the center vertically (zero
divisions).
Turn the HORIZONTAL POSITION knob to position the part of the YT waveform that you want to
analyze in the center eight divisions of the screen.
The oscilloscope calculates the FFT spectrum
using the center 1024 points of the time-domain waveform.
●
●
●
Turn the VOLTS/DIV knob to ensure that the entire waveform remains on the screen.
Turn the Time/DIV knob to provide the resolution you want in the FFT spectrum.
If possible, set the oscilloscope to display many signal cycles.
To set up the FFT display, follow these steps:
- Push the MATH MENU button.
- Set the Operation option to FFT.
- Select the Math FFT Source channel.
2. Displaying the FFT Spectrum
Press the MATH MENU button to display the Math Menu. Use the options to select the Source channel,
Window algorithm, and FFT Zoom factor. You can display only one FFT spectrum at a time
3. Select an FFT window
Windows reduce spectral leakage in the FFT spectrum. The FFT assumes that the YT waveform repeats
forever. With an integral number of cycles ， the YT waveform starts and ends at the same amplitude and
there are no discontinuities in the signal shape A non-integral number of cycles in the YT waveform causes
the signal start and end points to be at different amplitudes. The transitions between the start and end
points cause discontinuities in the signal that introduce high-frequency transients.
There are 4 FFT windows. Each window has trade-offs between frequency resolution and amplitude
accuracy. Your source waveform characteristics along with your measurement priorities help determine
which window to use. Use the following guidelines to select the best window.
47
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