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1-Channel & 4-Channel

Preamplifier-CFD

Manual

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Summary of Contents for Preamplifier-CFD

Page 1: ...1 Channel 4 Channel Preamplifier CFD Manual ...

Page 2: ...6 29 email info surface concept de web www surface concept de All rights reserved No part of this manual may be reproduced without the prior permission of Surface Concept GmbH User Manual for the 1 Channel Preamplifier CFD R007 4 Channel Preamplifier CFD R011 Manual Version 2 3 Printed on 2020 10 20 ...

Page 3: ...ration 7 4 Technical Specification 9 4 1 Layout of Front Panel 9 4 2 Input Output Features 11 4 2 1 Input Features 11 4 2 2 Output Features 11 4 2 3 Measurement Parameters 11 4 3 CFD Adjustment 11 4 3 1 Adjustment of CFD Threshold 11 4 3 2 Adjustment of Zero Offset 11 4 3 3 Adjustment of the Asymmetry 12 4 3 4 Procedure for Walk Minimization 12 4 4 Power Requirements 12 5 List of Figure 13 1 Table...

Page 4: ...4 T h i s s i d e h a s b e e n l e f t b l a n k o n p u r p o s e ...

Page 5: ...ty for damages or injuries caused by an improper use of the Module due to negligence on behalf of the User 2 2 General Overview of the System The Surface Concept Preamplifier CFD devices are a combination of a preamplifier with variable gain typ 13dB to 30dB and a constant fraction discriminator CFD housed in a RF shielded stand alone R007 or 19 R011 housing The device accepts 1 analog negative or...

Page 6: ...6 T h i s s i d e h a s b e e n l e f t b l a n k o n p u r p o s e ...

Page 7: ...mming the original input signal to an inverted signal The original input signal is delayed but of full height while the inverted signal is attenuated The resulting signal is fed into a zero crossing comparator This allows obtaining precise timing information that eliminates any walk error which is induced by constant rise time and varying signal amplitudes ...

Page 8: ...8 T h i s s i d e h a s b e e n l e f t b l a n k o n p u r p o s e ...

Page 9: ...n 4 1 Layout of Front Panel Figure 1 Front Panel of 1 Channel Preamplifier CFD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Figure 2 Front Panel of 4 Channel Preamplifier CFD 1 Figure 3 Back Panel of 4 Channel Preamplifier CFD 2 3 4 5 6 7 9 10 11 12 13 14 15 16 17 ...

Page 10: ... with an oscilloscope 5 Regulator for the Asymmetry Asy 6 Regulator for the Zero Offset Z 7 CFD Threshold Th Regulator 8 5 PIN Power Connector 9 Lemo Output for CFD NIM Signal 10 BNC Output for CFD LVTTL Signal 11 CFD Operation Monitor LED 12 Monitor Output for the Zero Offset Z 13 Monitor Output for the Threshold Th 14 Monitor Output for Ground GND 15 Power Switch to turn the device ON OFF Lighte...

Page 11: ...e range and while ambient temperature varies less then 5K 6 5ns 4 3 CFD Adjustment The CFD Threshold can be adjusted manually by turning the corresponding potentiometer marked Th on the front panel The threshold is getting more sensitive when turning the potentiometer clockwise It can be monitored on the corresponding sockets no 13 14 on the front panel see Figure 1 2 4 3 1 Adjustment of CFD Thres...

Page 12: ... e g 600mV 3 Observe the CFD output signal with an oscilloscope and trigger on the falling edge of the output signal 4 Check the CFD walk by changing the amplitude of the input signal by around 50 e g changing between 300 and 600mV and minimize the CFD walk by adjusting the asymmetry 5 Decrease the amplitude of the input signal by at least 50 e g down to 300mV and check the CFD walk for small puls...

Page 13: ... Figure 1 Front Panel of 1 Channel Preamplifier CFD 9 Figure 2 Front Panel of 4 Channel Preamplifier CFD 9 Figure 3 Back Panel of 4 Channel Preamplifier CFD 9 Figure 2 View of 5 Pin housing connector of 1 Channel Preamplifier CFD from outside 12 ...

Page 14: ...nformity with the following standards or other normative documents where relevant EN 61000 6 2 2005 AC 2005 Electromagnetic compatibility EMC Generic standards Immunity for industrial environments EN 61000 6 4 2007 A1 2011 Electromagnetic compatibility EMC Generic standards Emission standard for industrial environments EN 61010 1 2010 Safety Requirements for Electrical Equipment for Measurement Co...

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