A few years ago analogue oscilloscope is the only candidate desktop oscilloscope. Nowadays, cheap digital storage oscilloscopes (of), have introduced DSO for engineers offers dozens of alternative models.

DSO is attractive because it can be stored for signal waveform, on average, and support various trigger and analysis of options. But DSO is not are the same. Many DSO performance of only two complete to dc power supply signal acquisition, when the user to monitor the multiple test points along to bad luck.
Correct choice of oscilloscope became a challenging problem. This order according to the importance of choice to consider the oscilloscope list eight factors, so engineers make the right decision.

1 bandwidth
Oscilloscope should have enough bandwidth to capture and display the current and future application in the most rapid signal. Gm's experience is: at least is measured by oscilloscope bandwidth fastest three times the signal frequency.

2 the price
Every engineer all need YiTaiTai type oscilloscope. According to the company's size, this means to buy a few hundred sets or oscilloscope. For every engineer with a oscilloscope became a great investment.
Many companies want to use $2,500 or more money to buy an oscilloscope, unless this device can be Shared by a group of engineers. But if required every engineer must have an oscilloscope, how to spend at least is the most concern.

3 performance
Users want more is better performance, especially the design requirements as soon as possible. When using high-speed processor, the engineer must be able to test and reduce operating system will harm any emergent and transient events. This requires the support of the instantaneous speed oscilloscope event collection, advanced measurement and analysis ability, such as fast Fourier transform (FFT).
Higher prices higher performance, so the means to obtain the budget appropriation performance is more main objectives. The oscilloscope should choose four complete channel and the highest rate.
1G bit/SEC to sample the sampling rate can ensure the instrument can capture and show events, such as high-speed burrs and/or wobble. Must confirm the sampling rate of all channels, many of the sampling head of cheap DSO fold in a channel to get higher sampling rate. If all the channel, each channel can receive a portion of the sampling rate.
DSO should also support the real-time data acquisition, to capture the oscilloscope repeated signal characteristics. When the tracking of occasional pulse distortion and transient signal, the performance is very important.

4 trigger
Choose oscilloscope must consider when triggered, to confirm oscilloscope support basic edge and video trigger function, to quickly find certain signals.

5. Measurement and analysis
Automatic measurement period, such as frequency, average and peak, very useful signal peak - inspection and fault detection. In addition to more advanced analysis ability, such as signal average and FFT. Signal waveform display average can eliminate the extra noise oscilloscope, let users only check useful signal characteristics.

6 dimensions
Because the area is finite, so table size is necessarily all the oscilloscope, the biggest concern. Engineers are more small oscilloscope with love, because it is easy to carry. But not smaller is better, consider size not sacrifice performance or channel number.

7. Usability
Engineer quicker performance of master oscilloscope, the easier it will be to the measurement. Due to the engineer will often use this tool, so the friendly user interface, the efficiency of the engineer.