Hi,
I am new to embedded Liunx and to be honest, new to low level
programming (and low level problems :-) ) at all.
For my project, phase noise and attenuation measurements of microwave
links, I am looking for a flexible and reliable data acquisition
solution for in the field measurements.
The specificatons would be:
1. flexible sampling (59 simple samples a minunte and one timeslice of
or maybe less if we have to stay with the MAX197)
2. accessible via GRPS or best UMTS (the more bandwidth, the more data
can be uploaded to the ftp server)
3. accurate clock (There will be 6 boxes and sampling should take
place more or less simultaneous +-~100ms)
4. stable and small (has to fit in a small box and will be mounted on
a mast or something in the middle of nowhere, so at best runs for
month without problems)
Because of "flexible" and "stable" I considered a small linux machine
and thought of some daemons for communication, filetransfer and daq.
But there are still a lot of questions concerning the above points:
to 1.
-is it the best/easiest way will to use the TS-ADC16 with its shell
library?
-is the sample rate of 100ksps guaranteed for the TS-ADC16? I mean
like when I buy an NI card and use it with LabView I get the samples
as I want...
to 2.
-I toyed with the idea of using something like the Huawei E220
UMTS-USB-Stick from vodafone which is supported in linux kernels
>2.6.17. Will I have any additional problems because of the ARM9
architecture or because 2.6 is not standard for the TS-7250?
to 3.
-how big is the drift of the used onboard clock? I know that I can
sync them via ntp, but because of the jitter of the UMTS/GPRS network
I am still not sure how to accomplish that accurately enough. Maybe
with an additional radio clock...
Thanks in advance
christian
------------------------------------
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/ts-7000/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/ts-7000/join
(Yahoo! ID required)
<*> To change settings via email:
<*> To unsubscribe from this group, send an email to:
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
|