PQ201 datasheet(4/42 Pages) PICO

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PicoScope® 6000E Series

What is FlexRes?

Pico FlexRes flexible-resolution oscilloscopes allow you to reconfigure the scope

hardware to optimize either the sampling rate or the resolution.

This means you can reconfigure the hardware to be either a fast (5 GS/s) 8-bit

oscilloscope for looking at digital signals, a 10-bit oscilloscope for general-purpose use

or a high-resolution 12-bit oscilloscope for audio work and other analog applications.

Whether you’re capturing and decoding fast digital signals or looking for distortion in

sensitive analog signals, FlexRes oscilloscopes are the answer.

FlexRes is included on the 8-channel PicoScope 6824E and the 4-channel

PicoScope 6424E, 6425E, 6426E and 6428E-D oscilloscopes.

Resolution enhancement—a digital signal processing technique built into PicoScope —

can further increase the effective vertical resolution of the scope to 16 bits.

FlexRes – how we do it

Most digital oscilloscopes gain their high sampling rates by

interleaving multiple 8-bit ADCs. This interleaving process

introduces errors that always make the dynamic performance

worse than that of the individual ADC cores.

The FlexRes architecture employs multiple high-resolution

ADCs at the input channels in different time-interleaved and

parallel combinations to optimize, for example, the sampling

rate to 10 GS/s at 8 bits or the resolution to 12 bits at

1.25 GS/s.

For simplicity, the diagram shows one bank of four channels;

the 8-channel PicoScope 6824E has two banks. The 4-channel

FlexRes models use one quad-ADC chip for each pair of analog

channels.

The PicoScope 6428E-D is able to interleave a pair of quad-ADC

chips at 8-bits to achieve 10 GS/s.

Coupled with high signal-to-noise ratio amplifiers and a low-

noise system architecture, FlexRes technology can capture and

display signals up to 3 GHz with a high sampling rate, or lower-

speed signals with 16 times more resolution than typical 8-bit

oscilloscopes.

* See technical specifications for channel and sampling rate combinations.

MULTI-CHANNEL*

Independent sampling on all

channels at 8-bit or 10-bit

resolution.

TIME-INTERLEAVED*

Maximum sampling rate in

8 or 10-bit mode.

PARALLEL*

Simultaneous sampling

in 12-bit mode at up to

1.25 GS/s on two channels.

ADC

1.25 GS/s

ADC

1.25 GS/s

ADC

1.25 GS/s

ADC

1.25 GS/s

ADC

1.25 GS/s

ADC

1.25 GS/s

ADC

1.25 GS/s

ADC

1.25 GS/s

n+1

n+2

n+3

ADC

1.25 GS/s

ADC

1.25 GS/s

ADC

1.25 GS/s

ADC

1.25 GS/s

TIMING

8 bits

10 bits

12 bits

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