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2450 connect with a photometer

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benjamin
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Joined: March 1st, 2016, 6:34 am
Country: United Kingdom

2450 connect with a photometer

Post by benjamin » March 1st, 2016, 8:30 am

Hello,
we are using a Keithley 2450 and we want to recorded the light output of OLEDs as the voltage increase.Therefore we connect the Keithley instrument to a digital Photometer L203 from IRRADIAN through the digital I/O port.
We would like to make sure that the photometer is recognised by the instrument and to know if it is possible to see it on KickStart ?

Thanks for any answer you can give us.

Joseph V
Keithley Applications
Keithley Applications
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Joined: July 1st, 2014, 10:31 am
Country: United States

Re: 2450 connect with a photometer

Post by Joseph V » March 2nd, 2016, 6:58 am

The digital I/O port is not a communication port and as such the 2450 is not going to recognize a connected instrument.
The kickstart software does not support third-party instruments.

benjamin
Posts: 2
Joined: March 1st, 2016, 6:34 am
Country: United Kingdom

Re: 2450 connect with a photometer

Post by benjamin » March 7th, 2016, 1:41 am

Thanks for answering.

Do you know if there is any way we could connect a photometer to the 2450 and be able to do this kind of measurement (even without using kickstart) ?

Andrea C
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Keithley Applications
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Re: 2450 connect with a photometer

Post by Andrea C » March 11th, 2016, 3:33 am

Benjamin,
I suspect the motivation for the connection between the photometer and the 2450 is for triggering or coordination of when each makes a reading.
You'll have to determine if the photometer has any sort of digital triggering feature. If yes, then it could be possible to interface that trigger input of the photometer to the trigger output of the 2450.
However, the DB9 on the photometer is an RS-232 communication port. You would connect this to a COM port on a computer.

Alternately, if photometer does not have any triggering feature, then from a custom software routine you can tell 2450 to source a voltage, measure the current and then over RS-232, tell the photometer to give you a reading. Then repeat at the next voltage if trying to generate an IV curve.

Andrea

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