[time-nuts] A little quick advice, please

[Robert Atkinson]

Hi Bill,
It depends what you need/want. There are issues with the PC based 'scopes. Most obvious to the user is response time. It can be fustrating to have the screen change a second after the event happened! Other issues are sample rate and input voltage range. The Bitscope headlines "100MHz analog bandwidth" but you have to big a bit deeper to find "up to 40Ms/s". Seems like they are wasting most of the bandwidth if the have an anti-alising filter. This is really only usable to 20MHz single shot.
 I could not find the input sensitivity and ranges. I looked at the BitScope a while ago and decided it was overpriced at $600. I was lucky to find an HP 54645D for the same money. Unless you need the PC connnectivty and simple logic analyser (the 54645D gives both ;-), I'd look at a conventional 'scope. As you are considering a PC 'scope, have a look at the Pico Technolgy range, http://www.picotech.com/oscilloscope-specifications.html Their bandwith / sample rates make more sense. I've used their products and they work very well.

Robert G8RPI.

--- On Sun, 31/10/10, William H. Fite <omniryx at gmail.com> wrote:

From: William H. Fite <omniryx at gmail.com>
Subject: [time-nuts] A little quick advice, please
To: "PC Oscilloscope" <time-nuts at febo.com>
Date: Sunday, 31 October, 2010, 13:35

'morning, folks,

I was just on a verge of purchasing a Tek TDS1012 scope when a friend
suggested that I could save a chunk of change by buying a BitScope. Although
I've been aware of PC scopes, I never really looked into them.  The specs
look pretty good (the fact that I was looking at an entry-level Tek will
give you some idea of my needs).

Anyone have any experience with BitScope or other of the low-end PC scopes?

Thanks,

Bill

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