Hi All.
What would be the best way to make a simple measurement of a 100MHz signal
with an oscilloscope.
I want to do some experimenting with some impedance matching circuits. I have a signal generator (50ohm)
and a scope (500MHz bandwidth). The problem that I am foreseeing is the loading effect of the scope
on the signal. The probe has a capacitance of 3.9pF , which is 397ohms @ 100Mhz.
If I'm trying to match 50 ohms to say 1K , how can I measure it without totally messing up the readings
by loading the circuit.
What would be the best way to tackle this with the available equipment?
Put some higher impedance voltage divider across the load and measure from that?
I'm sure there must be some standard way to tackle this issue :0)
Cheers
Rob
What would be the best way to make a simple measurement of a 100MHz signal
with an oscilloscope.
I want to do some experimenting with some impedance matching circuits. I have a signal generator (50ohm)
and a scope (500MHz bandwidth). The problem that I am foreseeing is the loading effect of the scope
on the signal. The probe has a capacitance of 3.9pF , which is 397ohms @ 100Mhz.
If I'm trying to match 50 ohms to say 1K , how can I measure it without totally messing up the readings
by loading the circuit.
What would be the best way to tackle this with the available equipment?
Put some higher impedance voltage divider across the load and measure from that?
I'm sure there must be some standard way to tackle this issue :0)
Cheers
Rob