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: | + | {| 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 | + | |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 % || | ||
| Line 14: | Line 20: | ||
|<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 | + | |<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 | + | |<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 | + | |<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== | |
{| border="1" cellpadding="20" cellspacing="0" | {| border="1" cellpadding="20" cellspacing="0" | ||
| + | | <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> | ||
| − | <math>100\ ns</math> pulse | + | {| border="1" cellpadding="20" cellspacing="0" |
| + | | <math>100\ ns</math> pulse without Ribbon Cable|| <math>100\ ns</math> pulse with Ribbon Cable | ||
| + | |- | ||
| + | | [[File:100ns before.JPG | 400 px]] || [[File:100ns after.JPG | 400 px]] | ||
| + | |}<br><br> | ||
{| border="1" cellpadding="20" cellspacing="0" | {| border="1" cellpadding="20" cellspacing="0" | ||
| − | | [[File: | + | | <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" | ||
| + | | setup without Ribbon Cable|| setup with Ribbon Cable | ||
| + | |- | ||
| + | | [[File:Setup_2signal_before.JPG | 400 px]] || [[File:Setup_2signal_after.JPG | 400 px]] | ||
|}<br><br> | |}<br><br> | ||
| − | + | ==Measurements== | |
{| border="1" cellpadding="20" cellspacing="0" | {| border="1" cellpadding="20" cellspacing="0" | ||
| − | | [[File: | + | | 2 pulses without Ribbon Cable|| 2 pulses with Ribbon Cable |
| + | |- | ||
| + | | [[File:100ns delay before.JPG | 400 px]] || [[File:100ns delay after.JPG | 400 px]] | ||
|}<br><br> | |}<br><br> | ||
| + | |||
| + | 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
Attenuation of Ribbon Cable measurements
Experimental Set Up
| setup without Ribbon Cable | setup with Ribbon Cable |
 |
|
Measurements
| Pulse width | Attenuation, % | Comments | ||
| 10 % | ||||
| 16 % | ||||
| 40 % | see pictures about change of pulse shape | |||
| 44 % | see pictures about change of pulse shape | |||
| 55 % | see pictures about change of pulse shape |
- without Ribbon Cable - with Ribbon Cable
Pictures about change of pulse shape
| pulse without Ribbon Cable | pulse with Ribbon Cable |
 |
|
| pulse without Ribbon Cable | pulse with Ribbon Cable |
 |
|
| pulse without Ribbon Cable | pulse with Ribbon Cable |
 |
|
Signal Delay in Ribbon Cable measurements
Experimental Set Up
| setup without Ribbon Cable | setup with Ribbon Cable |
 |
|
Measurements
| 2 pulses without Ribbon Cable | 2 pulses with Ribbon Cable |
 |
|
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.