[time-nuts] Z3815A vs Z3816A

[Murray Greenman]

Alberto,

The Z3815A is certainly less common - except down here in VK/ZL. I have
one, and can try to answer your questions. The oscillator used in the
Z3815A is generally the HP E1938A, although mine is a more recent
Symmetricom version with a Milliren 260 OCXO adaptation. Power supply is
20 - 60V, and the units were built under licence by Chongho Industrial
in Korea.

No official documentation is available yet for the Z3815A, so all I have
was achieved by reverse engineering. The unit is compatible with Satstat
and Z38XX.

I have no experience of the Z3816A, although I have an HP Z3801A, a
Samsung GCRU-D and a Trimble NTGS50AA.

73,
Murray ZL1BPU