If you have a square wave at .5PPS and you connect a large series capacitor to
the coil of a quartz clock
(less battery) you get alternating seconds pulses drive to an analogue dial.
50 ohms will easily drive the about 1k coil.
Cheap quartz clocks make good slaves.
cheers,
Neville Michie
> On 29
Hi
If these are like the previous gear from the same designer, the parts (like the
OCXO)
that go in will vary quite a bit. In the past they seemed to be built by a wide
range of
people getting parts from a wide range of sources.
If there is any ID on the OCXO, it’s probably worth passing
A user on EEVBLOG asked his FA2 seller about the low pass filter. It is
apparently 150 kHz.
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This morning the drift rate is down to 0.001 Hz/day. It's settling in faster
than expected.
---
> The oscillator drifted at the rate of 0.00635 Hz / day, but the drift rate
> is slowing down (it's now around 0.005 Hz / day). It will be interesting to
> see how it
Didier FA2 is USBBert
In a message dated 9/29/2019 12:02:51 PM Eastern Standard Time,
shali...@gmail.com writes:
Android tablets support serial com via USB. You need an adapter which
should be easy to find (google Serial Adapter for Android). Of course you
will need the right software at the
DidierThank you for your response. I just bought an additional 7 inch tablet,
cheap, would like to use it as a readout and storage to transfer for further
processing.Attached what we are get with Serial.com on a PC.
In a message dated 9/29/2019 12:02:51 PM Eastern Standard Time,
OPTIONAL 1 PP2S OUTPUT
(EVEN-SECOND OUTPUT)
An even-second (1 PP2S) output is
available as an option to the 58503B.
The even-second output option
provides one pulse every other second,
synchronized to the even seconds in
GPS time. This is the reference time
used in CDMA base stations. GPS
I believe it's a CDMA thing. I have a Nortel GPSTM that came out of CDMA site.
It has the same thing.
---
(Mr.) Taka Kamiya
KB4EMF / ex JF2DKG
On Sunday, September 29, 2019, 9:36:55 AM EDT, Gregory Beat via time-nuts
wrote:
A new resident
To replace one?
On 2019-09-29 10:22, paul swed wrote:
On second thought (Pun intended)
Its a pendulum clock output. Have no idea why some one would use a
GPSDO to
drive a pendulum clock but that could be a reason for such a thing.
Paul
On Sun, Sep 29, 2019 at 12:02 PM Dana Whitlow
wrote:
I seem to recall there was a telecom application for a pulse per even second
output. Maybe for certain CDMA base stations ?
Mark S
m...@alignedsolutions.com
604 762 4099
> On Sep 29, 2019, at 5:56 AM, Gregory Beat via time-nuts
> wrote:
>
> A new resident arrived at the “Time Cave” this
On second thought (Pun intended)
Its a pendulum clock output. Have no idea why some one would use a GPSDO to
drive a pendulum clock but that could be a reason for such a thing.
Paul
On Sun, Sep 29, 2019 at 12:02 PM Dana Whitlow wrote:
> I can't speak for 1/2PPS, but at the Arecibo Observatory
Impulse stepper clocks. Though I will say a bit odd in that normally there
are two outputs.
Essentially even odd seconds across the stepper motor.
Regards
Paul
On Sun, Sep 29, 2019 at 9:36 AM Gregory Beat via time-nuts <
time-nuts@lists.febo.com> wrote:
> A new resident arrived at the “Time
I can't speak for 1/2PPS, but at the Arecibo Observatory we distributed
1PPS with every
10th second's pulse stretched to about twice the duration of the others. I
did find that to
be kind of handy every now and then, when troubleshooting things.
Dana
On Sun, Sep 29, 2019 at 8:36 AM Gregory
Android tablets support serial com via USB. You need an adapter which
should be easy to find (google Serial Adapter for Android). Of course you
will need the right software at the tablet end to do what you need.
IOs does not support serial com natively (at least did not when I checked a
year or
A new resident arrived at the “Time Cave” this weekend, the HP/Symmetricom
58503B. Just the plain front panel (4 LEDs) model, without Option 1 (VFD clock
display).
Acquired in USA, cheaper than current Asian exporter.
https://accusrc.com/uploads/datasheets/4975_58503b.pdf
Supposedly stored in
We use Serial com to interface with a PC It would be nice if some one could
find a way to transfer the data to a tablet.
Thanks Bert Kehren
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I did a test of the FA2 internal OCXO oscillator. The FA2 uses this as the
reference if you don't connect an external reference. You can adjust the
oscillator frequency with a small pot on the back panel. As shipped the
oscillator was 0.10 Hz off. I adjusted to be within 0.003 Hz (I didn't
Tammy Firefly:
> Hi All
>
> I was curious if anyone on this list has a meinberg downconverting antenna
> (gpsant) or a meinberg downconverter they’d part with? It is a 35.4 mhz
> downconverter.
Is this for private use?
I'm working at Meinberg, and I could see what I can do for you.
Martin
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