Experimental Set Up

setup without Ribbon Cable	setup with Ribbon Cable

Measurements

Pulse width	[math]\displaystyle{ V_1 }[/math]	[math]\displaystyle{ V_2 }[/math]	Attenuation, %	Comments
[math]\displaystyle{ 100\ \mu s }[/math]	[math]\displaystyle{ 5.0\ V }[/math]	[math]\displaystyle{ 4.5\ V }[/math]	10 %
[math]\displaystyle{ 10\ \mu s }[/math]	[math]\displaystyle{ 5.0\ V }[/math]	[math]\displaystyle{ 4.2\ V }[/math]	16 %
[math]\displaystyle{ 1\ \mu s }[/math]	[math]\displaystyle{ 5.0\ V }[/math]	[math]\displaystyle{ 3.0\ V }[/math]	40 %	see pictures about change of pulse shape
[math]\displaystyle{ 100\ ns }[/math]	[math]\displaystyle{ 5.0\ V }[/math]	[math]\displaystyle{ 2.8\ V }[/math]	44 %	see pictures about change of pulse shape
[math]\displaystyle{ 30\ ns }[/math]	[math]\displaystyle{ 4.0\ V }[/math]	[math]\displaystyle{ 1.8\ V }[/math]	55 %	see pictures about change of pulse shape

[math]\displaystyle{ V_1 }[/math] - without Ribbon Cable
[math]\displaystyle{ V_2 }[/math] - with Ribbon Cable

[math]\displaystyle{ 1\ \mu s }[/math] pulse without Ribbon Cable	[math]\displaystyle{ 1\ \mu s }[/math] pulse with Ribbon Cable

[math]\displaystyle{ 100\ ns }[/math] pulse without Ribbon Cable	[math]\displaystyle{ 100\ ns }[/math] pulse with Ribbon Cable

[math]\displaystyle{ 30\ ns }[/math] pulse without Ribbon Cable	[math]\displaystyle{ 30\ ns }[/math] pulse with Ribbon Cable

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.