Oscium Oscilliscope

planet10 · 6th April 2011, 09:33 PM

Home | Oscium

A new 5Mz scope using iPad, iPhone iPod Touch for UI.

I know little about scopes... comments?

dave

cliffyk · 7th April 2011, 02:35 AM

An interesting toy...

The analog BW of 5MHz is bumping right up against the Nyquist limit of the sampling rate of 12MS/s. The usable bandwidth at best 1/5 of the sample rate or 2.4Mhz.

The real bummer is the 240 point sample depth which makes it sort of a Fisher-Price "My First Oscilloscope".

At $298 it is grossly overpriced, you can buy a real single channel 20Mhz scope with 6k points capture depth for $30 more...

cbdb · 7th April 2011, 02:54 AM

Or a dual 50mhz digital scope.

$339.99 - RIGOL DS1052E 5.6" TFT LCD 50MHz 2-Channel Digital Color Storage Oscilloscope - Professional Tools

stratus46 · 7th April 2011, 03:03 AM

Quote:

Originally Posted by cliffyk

An interesting toy...

The analog BW of 5MHz is bumping right up against the Nyquist limit of the sampling rate of 12MS/s. The usable bandwidth at best 1/5 of the sample rate or 2.4Mhz.

The real bummer is the 240 point sample depth which makes it sort of a Fisher-Price "My First Oscilloscope".

At $298 it is grossly overpriced, you can buy a real single channel 20Mhz scope with 6k points capture depth for $30 more...

FWIW the Tek TDS-3054 stays FAR away from Nyquist. 500 MHz samples at 5 GHz. I've been using them for 13 years.

G²

singa · 7th April 2011, 03:12 AM

Quote:

Originally Posted by cbdb

Or a dual 50mhz digital scope.

$339.99 - RIGOL DS1052E 5.6" TFT LCD 50MHz 2-Channel Digital Color Storage Oscilloscope - Professional Tools

I agree this is value for money. and fft feature which is good for checking
noise and frequency(speaker) spectrum plus other goodies.Very useful in deed.

cliffyk · 7th April 2011, 03:30 AM

Quote:

Originally Posted by stratus46

FWIW the Tek TDS-3054 stays FAR away from Nyquist. 500 MHz samples at 5 GHz. I've been using them for 13 years.

G²

Hardly in the same ballpark price-wise...

kevinkr · 7th April 2011, 03:40 AM

Quote:

Originally Posted by cliffyk

Hardly in the same ballpark price-wise...

No, but very good used TEK scopes can be purchased on eBay for a few hundred dollars. I've bought several over the years with no problems - just need to make sure you are buying one from someone who can confidently state that it is in working order. (I.E. Avoid the "it lights up" and "I have no way to test it" sellers..)

kevinkr · 03:48 AM

Quote:

Originally Posted by planet10

Home | Oscium

A new 5Mz scope using iPad, iPhone iPod Touch for UI.

I know little about scopes... comments?

dave

A toy, admittedly a cool one, but performance on analog waveforms is probably not going to be that good..

kevinkr · 7th April 2011, 03:49 AM

Quote:

Originally Posted by singa

I agree this is value for money. and fft feature which is good for checking
noise and frequency(speaker) spectrum plus other goodies.Very useful in deed.

Only 8 bit quantization, wait until you see what a good sinewave looks like..

stratus46 · 7th April 2011, 03:49 AM

Quote:

Originally Posted by cliffyk

Hardly in the same ballpark price-wise...

The price wasn't the point. The 10:1 bandwidth vs sample rate was. The 5MHz scope is more like 1-1.5 MHz with a 12 MHz sample rate.

G²

6th April 2011, 09:33 PM	#1
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	Oscium Oscilliscope Home \| Oscium A new 5Mz scope using iPad, iPhone iPod Touch for UI. I know little about scopes... comments? dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

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7th April 2011, 02:35 AM	#2
cliffyk diyAudio Member Join Date: Nov 2009	An interesting toy... The analog BW of 5MHz is bumping right up against the Nyquist limit of the sampling rate of 12MS/s. The usable bandwidth at best 1/5 of the sample rate or 2.4Mhz. The real bummer is the 240 point sample depth which makes it sort of a Fisher-Price "My First Oscilloscope". At $298 it is grossly overpriced, you can buy a real single channel 20Mhz scope with 6k points capture depth for $30 more...

7th April 2011, 02:54 AM	#3
cbdb diyAudio Member Join Date: Oct 2008 Location: Vancouver	Or a dual 50mhz digital scope. $339.99 - RIGOL DS1052E 5.6" TFT LCD 50MHz 2-Channel Digital Color Storage Oscilloscope - Professional Tools

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