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Entry  Mon Oct 31 09:15:02 2011, Zhongwei Du, How to link PMT 
    Reply  Tue Nov 1 11:07:02 2011, Stefan Ritt, How to link PMT 
Message ID: 137     Entry time: Tue Nov 1 11:07:02 2011     In reply to: 136
Author: Stefan Ritt 
Subject: How to link PMT 

Zhongwei Du wrote:

I want to measure the signal from PMT . But it is a current signal, should i just put a series resistance, or use a amplifier to convert it to voltage signal before drs4?  

Can you give me some advice ? 

The evaluation board has a 50 Ohm termination resistor, which already converts your current into a voltage signal. If the resulting signal is too low (<20 mV) you can put in an amplifier or raise the HV of your PMT (inside the valid range given by its datasheet of course).

- Stefan 

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