[time-nuts] Symmetricom TimeSource 2700

Charles P. Steinmetz charles_steinmetz at lavabit.com
Thu Nov 24 12:39:07 EST 2011


Frederick wrote:

>Thanks for that information.  I had assumed that it was obtained 
>from the cell towers
>
>I was hoping that there would be a TOD output.  Still the device is 
>very nice and useful as a frequency standard.

Symmetricom sold the TS2700 as a Stratum 1 source, so it is likely 
that TOD information is available from the unit -- my point was just 
that it does not seem to appear on the Craft output, which is used 
for monitoring the 2700.

p.21 of the manual describes the T1 outputs:  "The Ensemble Timing 
Generator provides the timing for the T1 timing signals available at 
the Output Span A and B connectors in a framed, all-ones format, 
which is selectable in either D4 or ESF framing. SSM is available 
with ESF framing."

p.21 also describes the 10 MHz output:  "The Ensemble Timing 
Generator provides the timing for the 10 MHz low-phase-noise timing 
signal, available at the 10 MHz Output connector, which can be used 
for local cellular frequency or testing purposes."  It seems clear 
that Symmetricom does not consider the 10 MHz output to be the 
TS2700's primary output.

Best regards,

Charles








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