I have a Soekris 4501 running with NanoBSD and have got as far as adding the
PPS/DCD/GPIO modifications to the hardware. NTPns itself is working, and
the red LED is flashing as expected.
I would now like to get NTPns working with that more precise timing which is
available, but as I don't
Hi Bob,
You are right. My analog circuit skill is so limited, I need to be
realistic. I will make some modification to the circuit according to the
suggestions from you guys when new board is going to make. I've sent the
MV89A board to the factory and got 2 3db attenuators from minicircuit.
Hi Charles,
In my circuit, the VCC is 5v. I've noticed my bias and emitter resistor
is something need to be changed. I will play with the resistors and see if
it improves. Thanks.
2014-12-27 6:42 GMT+08:00 Charles Steinmetz csteinm...@yandex.com:
Li Ang wrote:
RF pnp transistor is harder
Hi Bob,
Here is the data and test scheme.
It does not show much difference.
2014-12-26 22:12 GMT+08:00 Bob Camp kb...@n1k.org:
Hi
Don’t go to crazy on the front end. You can spend a year optimizing
something like this. The objective is to see if the front end is a big
problem now. It’s
Hi
(In reply to several posts. It’s easier for me this way)
Ok, that’s good news !!! (and useful data)
Your counter performance degraded a bit when you put in 5 db and not much when
you put in 8 db.
It’s also maybe *too* good news. I suspect that cross talk between the channels
may be
Hi
You can use a PPS from any “on time” source. The PPS driver is the place to
look / thing to use for this.
The gotcha is that unless the PPS is indeed pulsing at the right time, it will
not improve the performance of the NTP client / server on the box. Without
something like a GPS / WWVB /
Look at the bottom of this page refclock.htm
http://doc.ntp.org/4.1.0/refclock.htm for a list a clocks that NTP can
use. Some of them are GPS receivers. For example type 30 is the Oncore
line of receivers and Type 20 is any generic NMEA GPS receiver, with is by
far the most common type.
There
Look at the bottom of this page refclock.htm
http://doc.ntp.org/4.1.0/refclock.htm for a list a clocks that NTP can
use. Some of them are GPS receivers. For example type 30 is the Oncore
line of receivers and Type 20 is any generic NMEA GPS receiver, with is by
far the most common type.
There
On Sat, Dec 27, 2014 at 4:56 AM, David J Taylor
david-tay...@blueyonder.co.uk wrote:
I have a Soekris 4501 running with NanoBSD and have got as far as adding
the PPS/DCD/GPIO modifications to the hardware.
Did you replace the crystal?
I would now like to get NTPns working with that more
Hi
The last release I see of NTPns is from 2008. The notes are from 2005. That’s a
*long* time in Internet years. Is this the release you are trying to use?
There are a number of security (and otherwise) issues with NTP that have come
up over that time period …
PHK is in the middle of a
I have had a look at the NTPns package and I don’t think that you will be able
do what you want without something naming the seconds. As you have GPSDO’s to
give you UTC aligned seconds you may be able to use the voice time service TIM
to help you manually set the system clock to the nearest
On Sat, Dec 27, 2014 at 4:26 PM, Bob Camp kb...@n1k.org wrote:
Hi
The last release I see of NTPns is from 2008. The notes are from 2005.
There are a number of security (and otherwise) issues with NTP that have
come up over that time period ...
NTPns is essentially unrelated to ntp.org
While evaluating my LTE Lite and testing my buffer board, my 5335A started
acting goofy - random hangs/crashes etc..
This morning, the fan came on, but no display.
To make a long story short, the problem was exactly as described in Service
Note 5335A-26B. I found evidence of overheating on the
From: Paul
Did you replace the crystal?
I would now like to get NTPns working with that more precise timing which
is available, but as I don't have an Oncore or a DCF77 receiver I am
stuck.
I suspect you'd need to ask PHK. NTPns supports pps-api and it supposrts
ntpv4 as a time source so
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