Tektronix 80A00, Technical Reference

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Optical Sampling Modules
c. Select Meas 4 , check On, and make sure the Source1 button is selected.
d. Select Main M1 (Math 1) as the source and Pulse as signal type in the
Source tab, and then choose Select Meas > Pulse – Amplitude > Pk-Pk.
e. Click the Region tab. Turn the gates on by checking the box next to On .
f. Adjust G1 and G2 as follows:
For 80C05 or 80C06, increase G1 until it is immediately to the left of
the peak of the fi rst rising edge, which should be approximately at the
second division. Move G2 until the time difference between G1 and
G2 is 5 times the rise time from the rising edge. See the following
table for the time difference between G1 and G2 for the different
bandwidth and
fi lter settings.
For 80C10, 80C10B, 80C10C, 80C15, or 80C25GBE, increase G1
until it is 15 ps after the 50% point of the rising edge. Move G2 until
the time difference between G1 and G2 is 10 times the rise time
from the rising edge. See the following table for the time difference
between G1 and G2 for the different bandwidth and
fi lter settings.
Table 10: Minimum limits
Optical sampling module Bandwidth/ fi lter setting Time difference
40 GHz G2-G1 = 65 ps (5 x 13 ps)
30 GHz G2-G1 = 85 ps (5 x 17 ps)
20 GHz G2-G1 = 125 ps (5 x 25 ps)
80C05
OC192 G2-G1 = 235 ps (5 x 47 ps)
80C06 50 GHz G2-G1 = 48 ps (5 x 9.6 ps)
65 GHz G2-G1 = 74 ps (10 x 7.4 ps)
30 GHz G2-G1 = 160 ps (10 x 16 ps)
OC768 G2-G1 = 120 ps (10 x 12 ps)
80C10
FEC43.02 G2-G1 = 112 ps (10 x 11.2 ps)
80 GHz G2-G1 = 60 ps (10 x 6.0 ps)
65 GHz G2-G1 = 74 ps (10 x 7.4 ps)
30 GHz G2-G1 = 160 ps (10 x 16 ps)
OC768 G2-G1 = 120 ps (10 x 12 ps)
FEC43.02 G2-G1 = 112 ps (10 x 11.2 ps)
80C10B, 80C10C
40GBase-FR G2-G1 = 119 ps (10 x 11.9 ps)
DSA8300 Performance Veri fi cation 239