Delay Cable Attenuation
A test of the properties of the cable RU 87 has been performed, with two
cables of a total length of 90m, which corresponds to a delay of 450ns.
The attenuation of the cable to a square wave input signal is shown in Fig. 1.
The fraction of the output amplitude A1 to input amplitude
A0 as a function of the
frequency of the input square wave is plotted.
For frequencies around 50MHz, the attenuation is about 2.
Fig. 2 shows the comparison of a CsI signal before (black) and after the
delay of 450 ns (green). The risetime of the CsI pulse is rised from 5 to 8ns and
the falltime from 50 to 90 ns. The attenuation is 1.9
Ch. Broennimann, 19 May 1995