What Jitter Performance Can I Expect from AVX-DD-A1-PS and AVX-DD-A2-PS Digital Delay Generators?
The AVX-DD-A1-PS and AVX-DD-A2-PS are digital delay generators. The jitter, or short-term delay
uncertainty, is a function of the delay setting. The jitter is defined more precisely as one standard deviation of
an accumulated group of delay measurements. The specified jitter for both of these instruments is 40 ps + 0.0005%
of the delay.
The figure below shows the jitter performance of a dual-channel, high-resolution AVX-DD-A2-PS-TC-HR delay generator. The performance is representative of all members of the AVX-DD-A1-PS and AVX-DD-A2-PS families. The jitter has been measured using a Hewlett-Packard HP5370A Universal Time Interval Counter.
The measured jitter is well within the specified limits at long delays. At very short delays, the measured value is
a few picoseconds above the specified value, but this is due to the measurement system itself (the HP5370A), which
contributes 35 ps of jitter. If this contribution is factored out, the jitter of the delay generator is well within
the specified limits.
(version 1.0, November 29, 1999)
