Hello, I am having trouble getting the signal from the detector to
appear on the computer (by using a DAQ board). So the experimental
setup consists of Dye laser (visible light), pumped by a ND:YAG laser
which initially triggers a SRS DG-535 pulse generator. The DG-535
then triggers the DAQ card (PCI-9812) and a gas sample separately (for
these purposes the gas triggering should not be important). The PMT
detector of laser light (Hamamtsu module H6780-04) is connected to the
same DAQ card, but the detector is not triggered at any time in the
sequence, so it is constantly "ON." When I run the experiment I do
not see a "laser" signal from the detector to the DAQ in the labview
program. If I connect the detector to an oscilloscope I do see a
signal, but it shows up before the initial laser triggering. The
laser signal seems to be too fast (10 ns) for the DAQ card (limit 50
ns or 20MHz), so is there any way to retard the signal and be able to
capture it with the current setup/DAQ card. thanks for any help.