[time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A, Z3811A, Z3812...
GandalfG8 at aol.com
GandalfG8 at aol.com
Sun Nov 2 18:25:10 EST 2014
It would seem that the hunt for 1PPS will need to be attempted by someone
with two units coupled together.
I don't know if there's some sort of handshake enablement but with just the
Ref-1 unit I've not been able so far to find 1PPS on the Interface
connector, either during the boot up sequence or when up and running.
The 1PPS on pin 6 of the RS422/1PPS connector is very easy to spot so I
don't think it's just a case of me missing it on the interface.
In a message dated 02/11/2014 23:03:34 GMT Standard Time, kb8tq at n1k.org
I bet (again the order of fries) that the ground on pin 13 that crosses
to is some sort of “other box plugged in” indicator.
The 15 pin cable is:
Pair End A End B
A 1 9
B 2 10
C 3 11 (short pin on 3)
D 4 12
E 5 13 (short pin on 13)
F 6 14
G 7 15
ground 8 8 (short pin on 8)
Pair B - CMOS signaling
Pair C - CMOS signaling
Pari D - one half of RS-422
Pair E - CMOS signal ? ground on pin 13
We have A, F, and G in the “to be discovered” category. One of those
should be the other half of D. Something in here should be a PPS.
> On Nov 2, 2014, at 5:48 PM, GandalfG8--- via time-nuts
<time-nuts at febo.com> wrote:
> Thanks Gotz
> 2 and 3 grounded works fine for me too, although I still have one unit
> insists on flashing the ON light rather than bringing it on solid. In
> other respects both units seem to match. Two more should be arriving
> sometime in the next couple of weeks so will see how they match up.
> Just for reference, pin 13 is also a ground connection so if just
> wires into the connector it might be convenient to use both grounds.
> In a message dated 02/11/2014 17:58:12 GMT Standard Time,
goetz at g-romahn.de
> Am 02.11.2014 15:08, :
>> Ooh err, whoops, and oh dear !!
>> Arthur, I've only just had a chance to look at your latest photos, and
>> unless I've really got my wires crossed, if you'll pardon the
>> your links on J5 are not shown on pins 2, 10, 12, and 15, but on pins
> 4, 6,
>> 11, and 13.
>> As far as I'm aware the numbering from the front of that connector as
>> starts in the top right hand corner and every row is numbered right to
>> That's certainly how mine are numbered anyway, and I wired them
>> accordingly, and it worked, so where the heck does that leave us
> thanks Nigel for detecting this glitch. I removed all jumpers now and
> tested some reasonable new/old combinations resulting in very simple
> it seems to be sufficient to connect pin2 and pin3 to pin8 (ground).
> Numbering as provided by Nigel and markings on my 15 pin-plug.
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