CH Precision T1 10MHz Time Reference

The problem is that as soon as you have more than one 
box (and one master clock) in the system – for instance, if 
you use a transport and DAC – then the errors can increase 
exponentially. The easiest solution is to synchronize the 
two clocks, designating one as the master and slaving 
the other to it. That’s exactly the solution provided by the 
Clock-Sync cards available for the CH Precision D1, C1 and I1, 
while the sophisticated software control incorporated into 
each of the units allows owners to designate master and 
slave according to circumstances and system topology. But 
what’s better than syncing two or more units to a single 
master clock? Syncing them all to a single, superior, external 
reference point – a reference like the T1 Time Reference 
external clock.
The T1 generates a super accurate, low-jitter signal that 
delivers measurably lower phase noise and more accurate 
transfer and conversion of digital signals. It is built around 
a high frequency 10MHz oven-controlled oscillator (OCXO), 
its core temperature and output further stabilized by 
encapsulation in a mechanically isolated billet aluminum 
block. Why not just use one of the popular and readily 
available Rubidium clock modules like everybody else? 
Because those Rubidium modules have a limited life 
span – generally between six and eight years – and they 
contain radioactive material. At CH Precision we expect us 
products to have a much longer working life than that, so 
incorporating components with a finite life is contrary to all 
our beliefs – especially if those components then present a 
serious disposal issue. 
By paying attention to the physical engineering and 
temperature control of our OCXO circuit, providing it with 
multiple buffers and a sophisticated power supply, we can 
match or exceed the performance of Rubidium clocks – 
without their associated issues. And to ensure the absolute 
accuracy of the oscillator output, you can sync the T1 to 
the GPS network, its satellites controlled by Cesium atomic 
clocks, the most stable and accurate time source known 
to man. Their 1Hz sync signal prevents any drift in the T1’s 
output, not just now but for years to come, ensuring that 
your digital signals are (and always will be) handled as 
accurately and carefully as humanly possible.