Do you have the manual from the LKB 2141 to tell you the output of the
RS-232-C. The output on RS-232-C follows a standard but the manual may
give any additional connection requirements. If the port's output is
standard, then you should be able to communicate using standard commands.
For ease of use some programming would help. BASIC or C would be the most
common languages for programming simple communication sequences.
An alternative is purchasing software from National Instruments to build an
instrument interface program. With their new LabView program everything is
graphical and there is no code writing involved. National Instruments also
has lower cost boards for data acquisition. One can typically build an
interface with much less cost than buying a commercial package. However,
the time factor is something to consider.
Regards,
Damon.
At 01:24 PM 1/28/98 +0100, you wrote:
>Hello Abrf
>
> We have an old LKB (Pharmacia) 2141 spectrophotometer on a HPLC system
>from which we would like to computerize data retrieval. It has an
>RS-232-C output, so we were wondering if we could not read the data
>directly into a PC. Has anyone ever tries this with this or similar
>instruments? Are there freeware or shareware programmes available which
>can download spectrophotometric data via the serial interface? It could
>be an alternative to buying an analog/digital converter and commercial
>software, which usually is very expensive.
>
>Bye, Alex
>======================================================================
>Dr. Alessandro Tossi
>Antiinfective peptides group
>Dept. of Biochemistry, Biophysics and Macromolecular Chemistry
>University of Trieste
>Phone -- 39 40 6763673; Fax -- 39 40 6763691
>email: tossi@univ.trieste.it
> tossi@icgeb.trieste.it
>http://www.univ.trieste.it:80/~nirdbbcm/antimic.html
>=====================================================================
>
Damon C. Barbacci
Department of Chemistry
Texas A&M University
College Station, TX 77843-3255
phone: (409) 845-0613
fax: (409) 845-9485