On Tue, 23 Dec 2003 13:04:47 -0500, Tim Hart wrote:

<snip>
>
>I just bought an O'Socpe and some places on the web show it to be 100 MHZ....and others show it to be 20 MHZ.
> I did some math and I agree with 20 MHZ.  It's a Tek 465 and the dial goes to .05 uS.  If .1 us is 10 MHZ....then .05
> should be 20 MHZ..  Am I missing something here?
>

Your 465 is spec'd at 100 MHz bandwidth.

See: http://www.jakehome.com.tw/spec/tek465-7ASP.html and undoubtedly
many other sites.

Applying that time calculation to your scope's bandwidth is mixing
apples and oranges (or, more accurately, horizontals and verticals).
While I don't know that it's correct to say that they're totally
independent, the bandwidth isn't determined by the max sweep speed.

The maximum sweep speed is determined by its horizontal drive
circuit's capabilities. The bandwidth is determined by the vertical
amplifier's frequency response.

Also, don't forget - that 0.05uS setting is the time *per division*.
There's room for a lot of cycles in each division. :=)


Regards, Bob

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads