Hello,
I am using my GPS disciplined rubidium frequency standard with a fibre optic
transmitter and receiver. The Tx and Rx is connected between the antenna
and the frequency standard with a meter of fibre optic cable.
The Tx and Rx devices are especially designed for the GPS frequency and are
very low jitter types. The overall gain of the connection is 0 dB.
So I assumed my frequency standard would work as usual.
But I've noticed there is a frequency error if -3x10E-10 while using the
fibre optic link instead of the normal 1 x 10E-11 accracy (tau = 10
seconds).
Can anyone help here. Is the fibre optic devices messing up the timing??
I know Fluke's unit has fibre optic connection as standard, so how do they
do it.
Regards
Martyn
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