HP 54750A, User Manual, Page: 452 / 478

How the Instrument Works
Figure 13-20.
Result of triggering the low speed gating pulse generator from the 10 Gb/s pattern generator .
Note that the number of false triggers is reduced but not completely
eliminated. This is because the inherent jitter of low speed pulse generators
makes it dicult to ensure that the gate enable edge is stable within a 10
Gb/s clock cycle . It may be possible , in some experimental setups , to generate
coherent and stable gate enable signals more directly from the trigger signal
and achieve better results .
While the 12 GHz/Gate mode allows triggering on complex and high speed
signals , care must be taken during experimental setups and when interpreting
the results .
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