06 | Keysight | N4960A Serial BERT 17 and 32 Gb/s - Data Sheet
Choose the complement of stress sources you need
The controller is offered in two versions. The N4960A-CJ0 is the base model and is ideal
for many optical serial data applications, providing a single tone of sinusoidal jitter injec-
tion. Settable over a wide range of frequencies and modulation depth, it facilitates jitter
tolerance testing and general receiver characterization.
For applications which require a more complex “stress recipe”, the N4960A-CJ1 includes
two independent sources of sinusoidal along with broadband true random jitter sources.
The multiple stress generators allow you to build a low level base floor that is a mixture
of random and possibly sinusoidal jitter. In addition, all clock outputs can be modulat-
ed with spread spectrum, with a deviation settable up to 1.0 % of the clock frequency
(10,000 ppm).
SSC modulation
(N4960A-CJ1 only)
Stressed
clock
2.5 to 16 GHz
synthesizer
Periodic jitter
1 Hz to 17 MHz
Sinusoidal jitter 1
1 Hz to 200 MHz
Sinusoidal jitter 2
1 Hz to 200 MHz
Random
jitter
N4960A-CJ1 only
Figure 8. Stress sources.
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