Oscilloscope Probing for High-speed Signals
应用文章
If you want to make accurate oscilloscope measurements on high-speed signals, it is critical that you select your probes with care and use them properly. The probe is the dominant factor in determining the noise floor and response of your measurement system. Probe loading effects on the circuit under test are also a critical consideration.
This application note discusses active probes with bandwidths greater than 1 GHz.
When you choose a probe, you need to evaluate four aspects:
- Response, Vout/Vin
- Target loading at low and high frequencies
- Noise
- Adaptability and ease of use for probing various targets