07-30-2014, 09:37 AM
Brenda
Yes, FM is that way. The rest of them, FM/AM IF and AM RF are fully sinewave.
The scope impedance (I used both hi-Z probe 10MOhm and straight coax to 50 Ohm) in fact did not change the wave shape much.
What I was wondering is if anyone has a similar Sencore and could look at the wave shape.
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Warren
No, actually the scope is not that great. It is a digital, it is the very first digital scope I worked with (exact same model) and i bought it as it is good enough for me and was $200 in fully working shape, but its 500 MHz claim is a bit artificial, it is a sampling scope with the sampling rate of 20 Mbit/sec so even though the front bandwidth is 500MHz, it only can show a repetitive signal of such a frequency, otherwise for single events it is good for up to 20MHz (or actually even to 10MHz if you go strict Nyquist here).
Yes, FM is that way. The rest of them, FM/AM IF and AM RF are fully sinewave.
The scope impedance (I used both hi-Z probe 10MOhm and straight coax to 50 Ohm) in fact did not change the wave shape much.
What I was wondering is if anyone has a similar Sencore and could look at the wave shape.
----
Warren
No, actually the scope is not that great. It is a digital, it is the very first digital scope I worked with (exact same model) and i bought it as it is good enough for me and was $200 in fully working shape, but its 500 MHz claim is a bit artificial, it is a sampling scope with the sampling rate of 20 Mbit/sec so even though the front bandwidth is 500MHz, it only can show a repetitive signal of such a frequency, otherwise for single events it is good for up to 20MHz (or actually even to 10MHz if you go strict Nyquist here).
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