Now I have the plan. Thanks !
I'll try to connect external OCXO to that 15-pin connector, then using
provided utility, I could switch to external oscillator.
I think here is settings for externally connected source of 10Mhz:
12. Select Clock Source ->
0. Internal
1. External
Probably I'll need to do some adjustment using so-called "Advanced
settings":
Advanced Menu:
1. Control Jam-Sync
2. Force Jam-Sync
3. Set Clock Value
4. Load D/A Converter
5. Set Disciplining Gain
6. Disconnect Battery to RTC Chip
0. Back to main menu
Regards,
V.P.
On 2014-02-07 13:39, gandal...@aol.com wrote:
My first card at least is a Datum card so quite old now, and that was
fine
doing what you want to do..
You really will need to read the manuals in some detail and I do
suggest
downloading the larger of the two files I uploaded, that will give you
the
latest versions of the Demo programs that allow adjustment of the card,
as
well as the earlier versions of the same and all the manuals
For some things, with earlier versions anyway, it's better to use the
BC635 version of the Demo software, as that comes with a built in help
section
which the BC637 version lacks.
I'll try and get a card installed so I can run the software properly
again
and if so will come back with more information later.
Regards
Nigel
GM8PZR
In a message dated 07/02/2014 18:25:22 GMT Standard Time,
t...@patoka.org
writes:
It seems I have first generation of that card. And I was thinking to
use
that card as a source of 1PPS and 10MHZ - not to feed it from another
reference. I though it is possible to do some "modding" to replace VCXO
by OCXO.
PCI Board Revision ID : 18 (0x12), Firmware Version : DT10041V11
On 2014-02-07 03:00, mike cook wrote:
Le 7 févr. 2014 à 00:18, d0ct0r a écrit :
Hello,
Does anybody seen any links to the information how to implement
external OCXO to Symmetricom PCI TFP BC635/BC637 ?
check the Symmetricom datasheets. You don't mention the version
you
are needing info for , IRIG/GPS.. Anyway, all that I glanced at
show an Exr. 10MHz ref input on pin 1 of the sub-D 15 connector.
Digital, 40% to 60% or sine, 0.5V to 8V p-p, > 10kOhm.
ex.
<http://www.symmetricom.com/resources/download-library/documents/datasheets/bc637pci-v2>
--
WBW,
V.P.
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--
WBW,
V.P.
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WBW,
V.P.
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