How to chose an oscilloscope...
#1
Hey guys, I'm looking at buying one of these as a tool to basically test my amps to see if there clipping. Before learning how to use one I gotta learn how to pick one out. I'm looking for the cheapest one possible, what exactly do I look for in one? This is all new to me, thanks...
#5
Hello
If you don't care about physical size older Tektronix or HP scopes are hard to beat (until they need service). I have used a couple of PC based scopes and they worked well for testing audio, telephony and other low frequency stuff, the Handy scope and can't remember the name of the other one.
Key things to look for are </font>
I have had good success with Kenwood, Hitachi, Tektronix, Fluke, HP and Instek scopes. It is really a personal preferance. You may find one locally for $50-$400.
Good luck J
If you don't care about physical size older Tektronix or HP scopes are hard to beat (until they need service). I have used a couple of PC based scopes and they worked well for testing audio, telephony and other low frequency stuff, the Handy scope and can't remember the name of the other one.
Key things to look for are </font>
- Bandwidth - 20MHz as stated is perfect</font>
- Triggering - should be stable so the waveform will always appear to start at the same place on the display.</font>
- Sensitivity - This is the range of input signals the internal amplifier/attenuator can use without overloading (clipping) the signal to be displayed. Using 10:1 or 100:1 probes can extend this range greatly. Most scopes have 5mV/div to 5V/div range. You would need a 10:1 probe to test the output of an amp since they are generally over 50Vpp.</font>
- Channels - scopes are available from 1 to 32 (could be higher), 2 channel is mimimum I recommend but 4 never hurts. An external triggering input is also very handy for referencing.</font>
I have had good success with Kenwood, Hitachi, Tektronix, Fluke, HP and Instek scopes. It is really a personal preferance. You may find one locally for $50-$400.
Good luck J
#6
Guest
Posts: n/a
Nice reply Jaxom!
Yes, make sure you have 10:1 probes at least, I regularly get voltages well over what could be displayed at 1:1...
I've been toying with buying one of these, only so I can include graphs in my reviews in PAS.
http://www.qkits.com/serv/qkits/vell...ages/k8031.asp
Yes, make sure you have 10:1 probes at least, I regularly get voltages well over what could be displayed at 1:1...
I've been toying with buying one of these, only so I can include graphs in my reviews in PAS.
http://www.qkits.com/serv/qkits/vell...ages/k8031.asp
#7
#9
In class all we use is B+K Precision. These scopes are nice, I enjoy working on them. Dual channel etc...
Theres a few stores that sell them in the TO area, if your around mississauga, theres a couple stores on Matheson and Dixie that sell used electronic scopes and other pieces for decent prices.
Theres a few stores that sell them in the TO area, if your around mississauga, theres a couple stores on Matheson and Dixie that sell used electronic scopes and other pieces for decent prices.
Thread
Thread Starter
Forum
Replies
Last Post