100Mhz Data Acquisition

[[email protected]]

We are seeking a compact/low-power Data Acquisition device for
deployment in small sub ocean devices. We need to sample 10Mhz pulses
at better than 10 samples per pulse (e.g. ~ 100Mhz). The pulses arrive
at around 10mV.
At the moment we are using a rather large and cumbersome National
Instruments device. This works fairly well but is not compact or low
power (>30watts would be nice)

Does anyone have experience with a DAQ device that might meet our
specs. I am emailing a few vendors at this time as well

Thanks,
Fritz

 

[Phil Allison]

We are seeking a compact/low-power Data Acquisition device for
deployment in small sub ocean devices. We need to sample 10Mhz pulses
at better than 10 samples per pulse (e.g. ~ 100Mhz). The pulses arrive
at around 10mV.
At the moment we are using a rather large and cumbersome National
Instruments device. This works fairly well but is not compact or low
power (>30watts would be nice)

Does anyone have experience with a DAQ device that might meet our
specs. I am emailing a few vendors at this time as well

Thanks,
Fritz

** Despite the implausibility of this post it arrives from the :


Woods Hole Oceanographic Institution
OrgID: WHOI
Address: 266 Woods Hole Road
City: Woods Hole
StateProv: MA
PostalCode: 02543
Country: US



** What the heck generates 10MHz pulses under water ??

Dolphins using CB ???





......... Phil

 

[Phil Allison]

"Phil Allison"

** Despite the implausibility of this post it arrives from the :

Woods Hole Oceanographic Institution
OrgID: WHOI
Address: 266 Woods Hole Road
City: Woods Hole
StateProv: MA
PostalCode: 02543
Country: US

** This is our OP - complete with cute pic:

Frederick N. Sonnichsen

http://www.whoi.edu/scitechdir/staff.go?id=355


He works for:

http://www.whoi.edu/



Serious stuff .......




........ Phil

 

[[email protected]]

VHF Tunicates?
Naaaaaahhhh- seriously we are modulating a 10Mbs
ethernet transmitter using bright LEDs. I want to do some DSP and noise
analysis. We are using a nice "neutrino detector" PMT the size of a
basketball for a receiver.

We will deply below the ocean photosphere, beyond 1000 meters where it
is very dark. Typically we lilke to can up things in a Ti cylinder and
operate from batteries. Compactness, Power consumption, and Thermal
output are everything to us in Oceanography.

Cheers,
Fritz

 

[Phil Allison]

VHF Tunicates?
Naaaaaahhhh- seriously we are modulating a 10Mbs
ethernet transmitter using bright LEDs. I want to do some DSP and noise
analysis. We are using a nice "neutrino detector" PMT the size of a
basketball for a receiver.

We will deply below the ocean photosphere, beyond 1000 meters where it
is very dark. Typically we lilke to can up things in a Ti cylinder and
operate from batteries. Compactness, Power consumption, and Thermal
output are everything to us in Oceanography.

** You are on the WRONG newsgroup - Fritz.

There is nothing BASIC about your activity or question.

Try posting on " sci.electronics.design " instead.




.......... Phil

 

[Joerg]

Hello Fritz,

We are seeking a compact/low-power Data Acquisition device for
deployment in small sub ocean devices. We need to sample 10Mhz pulses
at better than 10 samples per pulse (e.g. ~ 100Mhz). The pulses arrive
at around 10mV.
At the moment we are using a rather large and cumbersome National
Instruments device. This works fairly well but is not compact or low
power (>30watts would be nice)

Does anyone have experience with a DAQ device that might meet our
specs. I am emailing a few vendors at this time as well

If you intend to do a circuit board look at the TI converter ADS5500.
14bits at 125MHz. That, plus a nice gain controlled preamp such as an
AD603 (Analog Devices) might be the ticket and it will be a lot lower in
power consumption than 30W.

Regards, Joerg

 

[[email protected]]

OK and thanks Joerg. I looked at the sheets for the ADS5500 -looks like
a good low power option-Also I really like the fact that they have an
eval board. The price is reasonable so I'll check it out-

Per Phil's comment I'll post in the "design" board next time-tough to
know where 'basic" begins and ends these days with all the technology
out there, especially for a guy that started on vacuum tubes

Cheers All and Thanks,
Fritz