Hi! I have a quick question.
I have a 'box' that outputs two audio frequency signals, which I have semi-permanently connected to a dual channel scope. Output of the box is sine wave of the order of 10 mV to 1V, and about 20Hz to 20KHz. The outputs share a common ground with the box.
Rather than use the scope's probes, are there any problems with just adding a couple of BNC connectors to the 'box' and connecting those directly to the scope inputs with a meter of 50 ohm coax? I don't need the system to be ultra accurate so long as the two channels are comparable, but it would be nice to be flat over the audio region. I know there are cable capacitance issues at MHz frequencies, but my rough calcs show that I ought to be OK (1 meg input, about 100pF capacitance).
Thanks!
Stewart
I have a 'box' that outputs two audio frequency signals, which I have semi-permanently connected to a dual channel scope. Output of the box is sine wave of the order of 10 mV to 1V, and about 20Hz to 20KHz. The outputs share a common ground with the box.
Rather than use the scope's probes, are there any problems with just adding a couple of BNC connectors to the 'box' and connecting those directly to the scope inputs with a meter of 50 ohm coax? I don't need the system to be ultra accurate so long as the two channels are comparable, but it would be nice to be flat over the audio region. I know there are cable capacitance issues at MHz frequencies, but my rough calcs show that I ought to be OK (1 meg input, about 100pF capacitance).
Thanks!
Stewart