SPEX DM302 P.C. ACQ. MODULE

[RGR-74]

Hello everyone,
I have a problem,few days ago, I have to be repaired
an interface called PC Acq. Mod DM302 manufactured by SPEX;
This card receives a signal from an optical part (which is directly
connected to a polarizer) and sends its output signal to the polarizer
(thus creating a feedback) some days no longer works;
The question is: anyone has any information on this card (DM302
manufactured by SPEX) for example, wiring diagrams and user manual.

Thanks to all
Joseph

www.baab.it/ik2umd/

 

[Hans-Christian Becker]

In article <ce0948e3-cc39-45ac-9b74-966693b73451@r31g2000vbi.googlegroups.com>,
RGR-74 <romano_74@libero.it> wrote:

Hello everyone,
I have a problem,few days ago, I have to be repaired
an interface called PC Acq. Mod DM302 manufactured by SPEX;
This card receives a signal from an optical part (which is directly
connected to a polarizer) and sends its output signal to the polarizer
(thus creating a feedback) some days no longer works;
The question is: anyone has any information on this card (DM302
manufactured by SPEX) for example, wiring diagrams and user manual.

I don't have schematics for the DM302, but I do know that it is a
preamplifier and discriminator for photon counting. Have you tried to
contact Spex/Jobin-Yvon?

--
Dr. Hans-Christian Becker
'96 VN750 SM5TLH KG6POK
Uppsala, Sweden

 

[Hans-Christian Becker]

In article <02b23405-29ed-42bc-ae52-1f8975657955@e31g2000vbm.googlegroups.com>,
RGR-74 <romano_74@libero.it> wrote:

I tried to contact the Spex, but I have not any response,
I am not surprised ...

Unfortunately the documentation of this interface has been lost;
At this point I will make other checks and later I expand to other
control devices.

The input (at least in the configurations I have seen) takes pulses
from a photomultiplier operating in photon counting mode. The discriminator
then removes virtually all "dark" counts, and the output should (I think) be
pulses of uniform height that are fed to a counter.
Good luck,
Hans

--
Dr. Hans-Christian Becker
'96 VN750 SM5TLH KG6POK
Uppsala, Sweden

 

[RGR-74]

On 24 Nov, 10:22, h...@fki030.fki.uu.se (Hans-Christian Becker) wrote:

In article <ce0948e3-cc39-45ac-9b74-966693b73...@r31g2000vbi.googlegroups..com>,

RGR-74  <romano...@libero.it> wrote:
Hello everyone,
I have a problem,few days ago, I have to be repaired
an interface called PC Acq. Mod DM302 manufactured by SPEX;
This card receives a signal from an optical part (which is directly
connected to a polarizer) and sends its output signal to the polarizer
(thus creating a feedback) some days no longer works;
The question is: anyone has any information on this card (DM302
manufactured by SPEX) for example, wiring diagrams and user manual.

I don't have schematics for the DM302, but I do know that it is a
preamplifier and discriminator for photon counting. Have you tried to
contact Spex/Jobin-Yvon?

--
Dr. Hans-Christian Becker
'96 VN750 SM5TLH KG6POK
Uppsala, Sweden

Hello Hans,
I tried to contact the Spex, but I have not any response,
Unfortunately the documentation of this interface has been lost;
At this point I will make other checks and later I expand to other
control devices.
Thanks again
Joseph