DSA815 - TG spectrum analyzer contains 1.5 G digital spectrometer tracking source R
DSA815 - TG spectrum analyzer (including tracking source)
The digital intermediate frequency technology
9 kHz to 1.5 GHz frequency range
Shows the average noise level (DANL) - 135 dBm (typical)
Phase noise - 80 dBc/Hz (offset 10 kHz)
Whole range accuracy < 1.5 dB
Minimum resolution bandwidth (RBW) 100 Hz
The standard preamplifier
1.5 GHz tracking source (DSA815 - TG)
Equipped with abundant advanced measurement function
Equipped with EMI filter and peak detector
Pattern matching VSWR measurement suite
Rich interface: LAN, USB Host, USB Device and GPIB (optional)
8 "WVGA (800 x480) display, intuitive operation
Analog and digital oscilloscope in the observation of the details of the waveform, which has the advantage?
1.Which is more advantageous, analog or digital oscilloscope, in looking at the details of the waveform (e.g., looking at parasitic waveforms of less than 1% at zero and peak crossing)?
2. Digital oscilloscope generally provides online display of root mean square value, its accuracy is generally what?
Answer: 1) observe parasitic waveform of less than 1%. The observation accuracy is not very good either in analog oscilloscope or digital oscilloscope. The vertical accuracy of the analog oscilloscope may not be higher than that of the digital oscilloscope. For example, the vertical accuracy of the analog oscilloscope with a certain 500MHz bandwidth is ±3%, which is not more advantageous than that of the digital oscilloscope (usually the accuracy is 1-2%). Moreover, the automatic measurement function of the digital oscilloscope is more accurate than the manual measurement of the analog oscilloscope for details.
Under what circumstances should oscilloscope consider the sampling rate?
The bandwidth is dependent on the object under test. You want the minimum sampling interval (the inverse of the sampling rate) to capture the signal details you need, provided the bandwidth is satisfied. There are some empirical formulas about sampling rate in the industry, but basically they are all based on oscilloscope bandwidth, in practical application, it is best not to use oscilloscope to measure the same frequency signal. When selecting the type, the bandwidth of the oscilloscope should be more than 3 times that of the measured sinusoidal signal, and the sampling rate should be 4 to 5 times that of the bandwidth, which is actually 12 to 15 times that of the signal.For other waveforms, ensure that the sampling rate is sufficient to capture signal details. If you are using an oscilloscope, you can verify that the sampling rate is sufficient by stopping the waveform, amplifying the waveform, and if there is any change in the waveform (such as some amplitude), the sampling rate is insufficient, otherwise it will be ok. Point displays can also be used to analyze the adequacy of the sampling rate.