Perhaps. The DS-1 signal has a pulse-mask which is not square. And
while the all "1"s AMI signal looks like 772 kHz, presumably the D4 or
ESF frame would require some zero's in the 193d bit position. But your
suggestion leads to a possible 2 stage solution. There are CSU/DSUs
which accept an external TTL level clock. So perhaps use the tapr board
to drive the CSU/DSU and let the CSU/DSU build the DS-1 frame.
Thanks,
J.D.
Poul-Henning Kamp wrote:
In message <[email protected]>, Stanley Reynolds write
s:
Couldn't you do the same thing much easier with the ICS525 chip ?
Neat and convenient:
http://tapr.org/kits_clock-block.html
Poul-Henning
I have a board that does this, I could send you.
See Pictures here:
www.n4iqt.com/fts4040/ds1
=A0
www.n4iqt.com/fts4040/ds1/FTSds1001.JPG
www.n4iqt.com/fts4040/ds1/FTSds1002.JPG
www.n4iqt.com/fts4040/ds1/FTSds1003.JPG
Stanley
----- Original Message ----
From: J.D. Schoedel <[email protected]>
To: Discussion of precise time and frequency measurement <[email protected]=
m>
Sent: Sun, July 4, 2010 11:57:44 AM
Subject: [time-nuts] DS-1 from 10MHz
All,
=A0 I would like to generate a DS-1 timing reference from 10 MHz, e.g a T-b=
olt.=A0 =
Thought someone here might be able to suggest a starting point.
Thanks,
J.D.
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