IC227 Datasheet, PDF (14/22 Pages) IC-Haus GmbH – DUAL 11 GHz SAMPLING OSCILLOSCOPE

iC227
preliminary
DUAL 11 GHz SAMPLING OSCILLOSCOPE
Rev B1, Page 14/22
Figure 37: Measurement
The output of the iC212 Photoreceiver is connected
to ”TRIGGER IN”. ”SPLITTER OU1” is connected to
”SAMPLER IN1”. The trigger-output of the iC149 mod-
ule (5 V, Rout = 50 Ω → 2.5 V) is a little bit too high
for feeding it directly to the iC227 Oscilloscope. When
using the 10 dB attenuator, the level is reduced to
far below the maximum input of 2 V.
The amplitude measurement setup of the iC227 is
reading a value of 0.714 V in good correlation to the
above done estimation. To get the correct amplitude
values the ”Input Via Trigger” boxes must be checked.
2.5 V
∗
10^−
10
20
dB
dB
= 2.5 V ∗ 0.31 ≈ 0.77 V