How to create a trigger with Labview

Hi all,
i've this strobo lamp Perkin Elmer MVS 4100
(http://pki8.mondosearch.com/cgi-bin/MsmGo.exe?grab_id=0&EXTRA_ARG=&host_id=42&page_id=20717&query=4100)
and it does have a 9pin connector for the External Trigger.
Do you think is possibile to connect it to the serial port of the pc
and create via Labview the Trigger?
The strobe needs a +5V, 20mA,10-100µsec pulse to be triggered.
THanks in Advance.

Hi COmpa,
Do you think is possibile to connect it to the serial port of the pc
and create via Labview the Trigger?
The strobe needs a +5V, 20mA,10-100µsec pulse to be triggered.
I think the 9-pin serial port on a PC swings between +/- 12V - if that's OK for your trigger, then a pulse of precise duration might be generated by configuring the port for serial output, a suitable baud-rate, careful selection of start or stop bit, and then sending a single byte byte where all bits are the same.  I've never done this, but I think it's possible!
If the +/- 12V is a show-stopper, then consider using a parallel-port instead.  Its pins swing between 0 and 5V.
http://zone.ni.com/devzone/conceptd.nsf/webmain/72C6FC6CE4AD4D1386256B1800794596
Also, a "quick and dirty" way to control pins on either the serial port or parallel port is by writing to a VISA property node:
Have fun!
Message Edited by tbd on 06-28-2006 11:52 PM
"Inside every large program is a small program struggling to get out." (attributed to Tony Hoare)
Attachments:
VISAProp.jpg ‏3 KB

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