Difference between revisions of "Ribbon Cable Attenuation Measurements"

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[http://wiki.iac.isu.edu/index.php/PhotoFission_with_Polarized_Photons_from_HRRL Go Back]
 
[http://wiki.iac.isu.edu/index.php/PhotoFission_with_Polarized_Photons_from_HRRL Go Back]
 +
 +
=Attenuation of Ribbon Cable measurements=
  
 
==Experimental Set Up==
 
==Experimental Set Up==
  
−
[[File:IMG 0358.JPG | 600 px]]
+
{| border="1"  cellpadding="20" cellspacing="0"
 +
| setup without Ribbon Cable|| setup with Ribbon Cable
 +
|-
 +
| [[File:Setup before.JPG | 400 px]] || [[File:Setup after.JPG | 400 px]]
 +
|}<br><br>
  
 
==Measurements==
 
==Measurements==
  
 
{| border="3"  cellpadding="20" cellspacing="0"
 
{| border="3"  cellpadding="20" cellspacing="0"
−
|Pulse width ||<math>V_1</math> ||<math>V_2</math> ||Attenuation, % ||Comments
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|Pulse width ||<math>V_1</math>||<math>V_2</math>||Attenuation, % ||Comments
 
|-
 
|-
 
|<math>100\ \mu s</math> ||<math>5.0\ V</math> ||<math>4.5\ V</math> ||10 % ||
 
|<math>100\ \mu s</math> ||<math>5.0\ V</math> ||<math>4.5\ V</math> ||10 % ||
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|<math>10\ \mu s</math> ||<math>5.0\ V</math> ||<math>4.2\ V</math> ||16 % ||
 
|<math>10\ \mu s</math> ||<math>5.0\ V</math> ||<math>4.2\ V</math> ||16 % ||
 
|-
 
|-
−
|<math>1\ \mu s</math> ||<math>5.0\ V</math> ||<math>3.0\ V</math> ||40 % ||see pictures about pulse's shape change
+
|<math>1\ \mu s</math> ||<math>5.0\ V</math> ||<math>3.0\ V</math> ||40 % ||see pictures about change of pulse shape
 
|-
 
|-
−
|<math>100\ ns</math> ||<math>5.0\ V</math> ||<math>2.8\ V</math> ||44 % ||see pictures about pulse's shape change
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|<math>100\ ns</math> ||<math>5.0\ V</math> ||<math>2.8\ V</math> ||44 % ||see pictures about change of pulse shape
−
|-
+
|-  
−
|<math>30\ ns</math> ||<math>4.0\ V</math> ||<math>1.8\ V</math> ||55 % ||see pictures about pulse's shape change
+
|<math>30\ ns</math> ||<math>4.0\ V</math> ||<math>1.8\ V</math> ||55 % ||see pictures about change of pulse shape
 
|}
 
|}
  
−
==Pictures==
+
<math>V_1</math> - without Ribbon Cable
 +
<math>V_2</math> - with Ribbon Cable
  
−
<math>1\ \mu s</math> pulse width
+
==Pictures about change of pulse shape==
  
 
{| border="1"  cellpadding="20" cellspacing="0"
 
{| border="1"  cellpadding="20" cellspacing="0"
−
| <math>1\ \mu s</math> pulse width without Ribbon Cable|| <math>1\ \mu s</math> pulse with without Ribbon Cable
+
| <math>1\ \mu s</math> pulse without Ribbon Cable|| <math>1\ \mu s</math> pulse with Ribbon Cable
 
|-
 
|-
 
| [[File:1us before.JPG | 400 px]] || [[File:1us after.JPG | 400 px]]  
 
| [[File:1us before.JPG | 400 px]] || [[File:1us after.JPG | 400 px]]  
 
|}<br><br>
 
|}<br><br>
  
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  <math>100\ ns</math> pulse width
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{| border="1" cellpadding="20" cellspacing="0"
 +
| <math>100\ ns</math> pulse without Ribbon Cable|| <math>100\ ns</math> pulse with Ribbon Cable
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|-
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| [[File:100ns before.JPG | 400 px]] || [[File:100ns after.JPG | 400 px]]
 +
|}<br><br>
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 +
{| border="1"  cellpadding="20" cellspacing="0"
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| <math>30\ ns</math> pulse without Ribbon Cable|| <math>30\ ns</math> pulse with Ribbon Cable
 +
|-
 +
| [[File:30ns before.JPG | 400 px]] || [[File:30ns after.JPG | 400 px]]
 +
|}<br><br>
 +
 
 +
 
 +
=Signal Delay in Ribbon Cable measurements=
 +
 
 +
==Experimental Set Up==
  
 
{| border="1"  cellpadding="20" cellspacing="0"
 
{| border="1"  cellpadding="20" cellspacing="0"
−
| <math>100\ ns</math> pulse width without Ribbon Cable|| <math>100\ ns</math> pulse with without Ribbon Cable
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| setup without Ribbon Cable|| setup with Ribbon Cable
 
|-
 
|-
−
| [[File:100ns before.JPG | 400 px]] || [[File:100ns after.JPG | 400 px]]  
+
| [[File:Setup_2signal_before.JPG | 400 px]] || [[File:Setup_2signal_after.JPG | 400 px]]  
 
|}<br><br>
 
|}<br><br>
  
−
<math>30\ ns</math> pulse width
+
==Measurements==
  
 
{| border="1"  cellpadding="20" cellspacing="0"
 
{| border="1"  cellpadding="20" cellspacing="0"
−
| <math>30\ ns</math> pulse width without Ribbon Cable|| <math>30\ ns</math> pulse with without Ribbon Cable
+
| 2 pulses without Ribbon Cable|| 2 pulses with Ribbon Cable
 
|-
 
|-
−
| [[File:30ns before.JPG | 400 px]] || [[File:30ns after.JPG | 400 px]]  
+
| [[File:100ns delay before.JPG | 400 px]] || [[File:100ns delay after.JPG | 400 px]]  
 
|}<br><br>
 
|}<br><br>
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 +
We have about 170 ns delay of signal in Ribbon Cable for 100 ns pulse.
 +
For other pulse width the delay is about the same.
  
  
 
[http://wiki.iac.isu.edu/index.php/PhotoFission_with_Polarized_Photons_from_HRRL Go Back]
 
[http://wiki.iac.isu.edu/index.php/PhotoFission_with_Polarized_Photons_from_HRRL Go Back]

Latest revision as of 22:27, 19 January 2011

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Attenuation of Ribbon Cable measurements

Experimental Set Up

setup without Ribbon Cable setup with Ribbon Cable
Setup before.JPG Setup after.JPG



Measurements

Pulse width [math]V_1[/math] [math]V_2[/math] Attenuation, % Comments
[math]100\ \mu s[/math] [math]5.0\ V[/math] [math]4.5\ V[/math] 10 %
[math]10\ \mu s[/math] [math]5.0\ V[/math] [math]4.2\ V[/math] 16 %
[math]1\ \mu s[/math] [math]5.0\ V[/math] [math]3.0\ V[/math] 40 % see pictures about change of pulse shape
[math]100\ ns[/math] [math]5.0\ V[/math] [math]2.8\ V[/math] 44 % see pictures about change of pulse shape
[math]30\ ns[/math] [math]4.0\ V[/math] [math]1.8\ V[/math] 55 % see pictures about change of pulse shape 
[math]V_1[/math] - without Ribbon Cable
[math]V_2[/math] - with Ribbon Cable

Pictures about change of pulse shape

[math]1\ \mu s[/math] pulse without Ribbon Cable [math]1\ \mu s[/math] pulse with Ribbon Cable
1us before.JPG 1us after.JPG



[math]100\ ns[/math] pulse without Ribbon Cable [math]100\ ns[/math] pulse with Ribbon Cable
100ns before.JPG 100ns after.JPG



[math]30\ ns[/math] pulse without Ribbon Cable [math]30\ ns[/math] pulse with Ribbon Cable
30ns before.JPG 30ns after.JPG




Signal Delay in Ribbon Cable measurements

Experimental Set Up

setup without Ribbon Cable setup with Ribbon Cable
Setup 2signal before.JPG Setup 2signal after.JPG



Measurements

2 pulses without Ribbon Cable 2 pulses with Ribbon Cable
100ns delay before.JPG 100ns delay after.JPG 



We have about 170 ns delay of signal in Ribbon Cable for 100 ns pulse. 
For other pulse width the delay is about the same.


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