Products > Test Equipment
x1 Oscilloscope Probe Shootout
2N3055:
Best way would be to go with coax from AWG output to a T that is connected directly on BNC on reference channel set to 50Ω. Then connect a probe to that T.
That creates 25Ω feed point directly on reference input channel.
That is optimal way for Bode and also for waveform comparisons...
It is not important what is on output of AWG but what the reference scope channel sees..
artur0089:
--- Quote from: 2N3055 on September 25, 2023, 08:28:19 am ---Best way
--- End quote ---
use of two generator channels.
The input capacitance of X1 probes is 50-120 pF.
Without interference and distortion, T-split operates up to 2 MHz.
artur0089:
--- Quote from: 2N3055 on September 25, 2023, 08:28:19 am ---to go with coax from AWG output to a T that is connected directly on BNC on reference channel set to 50Ω. Then connect a probe to that T.
--- End quote ---
:-//
2N3055:
--- Quote from: artur0089 on September 25, 2023, 08:49:48 am ---
--- Quote from: 2N3055 on September 25, 2023, 08:28:19 am ---Best way
--- End quote ---
use of two generator channels.
The input capacitance of X1 probes is 50-90 pF.
Without interference and distortion, T-split operates up to 2 MHz.
--- End quote ---
Bode plot works by comparing against reference chanel. It is differential measurement...
2N3055:
Output of AWG is connected to T in CH1. CH1 is set for 50Ω. in other side of T you connect probe and connect probe's BNC to CH3.
In Bode plot you setup CH1 as reference channel and CH3 as output.
Whatever distortion in amplitude and phase happens at T compared to output of AWG is irrelevant.
Bode plot measures phase between CH1 and CH3, not relative to AWG...
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