13 | Keysight | N4917B Optical Receiver Stress Test Solution - Solution Brochure
N4917B Jitter Conformance And Performance Tests
Depending on the test setup and DUT capabilities, it is also possible to run fully automated
jitter tolerance measurements using built-in JTOL measurement within the M8070A System
Software.
This test is used when either:
a. the DUT can be put into loopback mode and a signal from the lane under test is fed back
to the BERT, or
b. the DUT can be controlled directly from the M8070A software using the DUT Contol
Interface (license required) to read the BER directly from the DUT internal error checker
counters.
The M8070A JTOL measurement can also be run as a compliance test with/without margin or a
tolerance test to find the limits of the DUT. It has several additional features such as a choice of
search algorithm, user definable BER depth, etc.
Figure 11. Jitter tolerance measurement result screen within M8070A system software.
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