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please help me to buy oscilloscope

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omid:
Hello Dears
i want to buy a 100MHZ-1GS/s oscilloscope.
but i dont know rigol is better or GW instek or TDS1012-C-EDU Tektronix.
i need a low noise oscop to measure analog signals around mv amplitude with High accuracy and quality of measuring.
so whats your suggestion?
please help me.
thanks so much.

T4P:
If you really want to spend that much i rather you go for a DSOX2000

Galenbo:

--- Quote from: omid on June 02, 2012, 06:07:17 pm ---i need a low noise oscop to measure analog signals around mv amplitude with High accuracy and quality of measuring.

--- End quote ---

Then you schould specyfy how low noise, how high accuracy, and witch quality of measuring.

Often, in the same price class, both scopes fail or both pass your requirements.

free_electron:
The only scopes i know of that work in the mV domain are Rohde & Schwartz machines.
Other scopes mostly limited to the 10mV/div range and already show 1 div of noise....
The r/s has 1mV/div and will show about 1/5 div of noise there..

Or you have to start working with preamps ( active probes with gain )

omid:
unfortunatly i can just buy RIGOL brand or GW instek or Tektronix(old Models).
for example i want to measure a load cell output that has 10 mv Amplitude in full scale.
and i want to see the ripple amplitude on a dc level of my sensors.
so which model of these brands is good or better for this porpuse???
thanx again.

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