Search found 7 matches

by LarsW
Mon Dec 05, 2016 1:41 pm
Forum: USB PC Data Loggers
Topic: conversion and sampling time
Replies: 1
Views: 2331

conversion and sampling time

I use ADC-24 and I am have questions about conversion and sampling time: - Is there a limit on how many channels that can be measured with a certain combination of conversion and sampling time? So that, e.g., 5 channels with 660 ms conversion time and 5 s sampling rate is ok, but using 10 channels w...
by LarsW
Tue May 23, 2006 6:29 am
Forum: PicoLog
Topic: PLW file date format
Replies: 20
Views: 28908

Dear Guest. Thanks. However, I had to make some minor changes to lines 118-123 to make it run: t = zeros(1,param.no_of_samples); U = zeros(param.no_of_parameters,param.no_of_samples); for p=1:param.no_of_samples %here the samples are read t(p)=fread(fid,1,'uint')'; %time U(:,p)=fread(fid,param.no_of...
by LarsW
Wed Mar 29, 2006 9:05 am
Forum: PicoLog
Topic: ADC-11 logger. Diagram not correct after weekend
Replies: 5
Views: 5647

Now we have got the problem on a third computer also...and some new facts about it. It seems to be connected to the number of data logged. Previously we have seen the problem in the morning after having started logging the day before with 5 s interval. Changing to 1 s interval made the graphics cras...
by LarsW
Mon Mar 27, 2006 6:30 am
Forum: PicoLog
Topic: PLW file date format
Replies: 20
Views: 28908

Here is my program PLW2ML.m that converts PLW-files to MATLAB variables. On lines 59-69 you can see the differences I noted between the different versions 1, 2 and 3. Note that the param.PLS, which contains information about the run (for example the names given to the channels) had an initial part t...
by LarsW
Sat Mar 25, 2006 10:34 pm
Forum: PicoLog
Topic: PLW file date format
Replies: 20
Views: 28908

Some time ago I wrote a MATLAB-program to read PLW-files directly into MATLAB. I remember that the manual did not give the whole truth, but also that (if I remember correctly) different versions (I found three) were slightly different. So if you want a program that works for all PLW-files you need t...
by LarsW
Sat Mar 25, 2006 10:22 pm
Forum: PicoLog
Topic: ADC-11 logger. Diagram not correct after weekend
Replies: 5
Views: 5647

No, the file size is not the problem. I get this problem on two of my Pico-loggers (I have many more running without any problems) and the diagram goes strange after about one day collecting 8 channels @ 5 s (not much) every time I use these computers. I regularly collect for at least a week with th...
by LarsW
Thu Mar 23, 2006 10:56 am
Forum: PicoLog
Topic: ADC-11 logger. Diagram not correct after weekend
Replies: 5
Views: 5647

Same problem with diagrams as Malte J?

I seem to have the same problems as Malte Johansson described 31 January 2006 ("Diagram not correct after weekend"). I run at least 20 PLW applications in my lab (TC-08 serial, TC-08 USB and ADC-16) and some months ago the PLW running one of the TC-08:s lost the ability to show graphics correctly af...