Reflection of T0C/NTC cable

Nov/29/01

 We have checked the T0C signal reflection at the following case.

Some reflection was found.

The reflection at ~140nsec from pulse peak is

about five percent of pulse height.

So , we should replace the only RG 8 cable

after we set cable length for timing.

And we determine that the threshold is more than five percent

of the pulse height not to measure the reflection at the next clock.

Case 1

Case 2

Case 3

Case 4

Reflection / Pulse height ~  5 %

Created by Hiroshi Tsuruoka < tsuru@bnl.gov >  Nov/29/2001