Agilent / HP / Keysight 58503B

This unit is a high quality source of precision time, time interval, and frequency in a lightweight compact package.

It ensures excellent accuracy and reliability, it delivers precise time and frequency virtually anywhere in the world.

When locked to the GPS signal, it provides a 10MHz signal with an accuracy of better than 1x10–12 using a 1 day average.

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p>A 1 pulse per second (1 PPS) signal with timing jitter of <750ps rms is provided.

Time accuracy relative to GPS of 20ns (1 Sigma, typical) can be obtained once the unit is properly installed and all systematic offsets have been compensated out.

If the GPS signal is interrupted, it enters an intelligent holdover mode, which ensures frequency is maintained to better than 1x10–10 per day (phase accumulation <8.6 µsec after 24 hours).