I recently needed to synchronize a Windows XP machine with GPS time. One of the requirements was sub-millisecond accuracy, which is no small thing for non-RTOS computers. David Hart to the rescue! He has written an driver for the NTP (network time protocol) service to incorporate a PPS (pulse per second) signal. The PPS signal, coming from a GPS, is highly accurate after sufficient time has elapsed for the GPS to sync with the satellites. I’ve received a lot of help from David Taylor; thanks again, David! So, without further ado, here’s an example of how to proceed with the installation:
[UPDATE: from David Hart – “I’ve posted a new serialpps-20091228.zip which should correct that [install.bat bug]. The (huge) debug build of serialpps-ppsapi-provider.dll is also added, along with a tiny bit of instructions in install.bat regarding PPSAPI_DLLS.”]
1. Configure hardware.
Connect the PPS signal to the DCD pin on the RS232 connector.
2. Install Meinberg NTP software.
Keep all defaults.
Create and use a special NTP account. (I always had problems using anything else)
Account name: ntp (use whatever you want)
Account pass: ntpntp
3. Stop NTP.
Run “C:\Program Files\NTP\bin\stopntp.bat”. There are alot of useful utils in the \bin directory.
4. Replace ntpd.exe with altered version.
Extract “ntpd.exe” from “ntp-4.2.4p6-DLH-QPC-20090315-bin.zip”
Copy to “C:\Program Files\NTP\bin”, replacing previous ntpd.exe.
5. Install SerialPPS.
Extract all from “serialpps-20090606.zip“.
Edit “install.bat”
On line 6, remove ‘if “x86″==”%PROCESSOR_ARCHITECTURE” ‘
Remove line 7 and 8 (you can just put “REM ” in front and they will be ignored, almost like a comment)
Run “install.bat”
Ensure that “serialpps.sys” was copied to “C:\Windows\system32\drivers”
Copy “serialpps-ppsapi-provider\x86\serialpps-ppsapi-provider.dll” to “C:\”
Right-click “My Computer”, go to properties.
Click “Advanced” tab
Click “Environment Variables” button
Under “System variables”, Click “New” button
Name: PPSAPI_DLLS
Value: C:\serialpps-ppsapi-provider.dll
6. Configure GPS (for Garmin)
Run “SNSRCFG.exe”
Connect to GPS
Configure
Set baud rate to 4800
Enable “Pulse Per Second”
Press F7
Enable GPRMC, disable others
Send config to GPS
7. Configure NTP
Edit “C:\Program Files\NTP\etc\ntp.conf”
Remove all entries, add the following
driftfile “C:\Program Files\NTP\etc\ntp.drift”
enable stats
statsdir “C:\Program Files\NTP\etc\”
statistics loopstats
server 127.127.22.1 minpoll 4 #PPS
server 127.127.20.1 iburst prefer minpoll 4 maxpoll 7 #GPS
#fudge 127.127.20.1 time1 0.4 refid GPS #uncomment and change time1 as needed
8. Ensure GPS is connected to serial port 1
9. Restart computer
10. Unplug GPS and disable Microsoft Ball-mouse (if listed)
Go to device manager: My Computer->Properties->Hardware->Device Manager
Under “Mice and other pointing devices”, right-click and disable “Microsoft Serial BallPoint”
11. Reconnect GPS Restart computer
12. Start NTP server
Run “C:\Program Files\NTP\bin\startntp.bat”
13. Monitor NTP server
Run “C:\Program Files\NTP\bin\ntpstatus.bat”
Both GPS and PPS should show up. After the GPS gets a lock, NTP should sync to the servers.
Refer to online documentation for help.
Alternatively, use “NTP Time Server Monitor” from Meinberg
To Uninstall PPS driver, run “uninstall.bat”.
March 1, 2021 at 6:17 am
Kolagit obat diabetes alami yang terbuat dari rempah olahan gula tebu berbentuk serbuk. Jadi, apa lagi yang Anda tunggu? Segera pesan Kolagit sekarang juga di website kami yang men- jual kolagit
March 9, 2021 at 3:01 am
Download film sub indo 1080p Google Drive
March 2, 2021 at 9:59 pm
Kami akan mewujudkan keinginan kamu agar alis kamu terlihat cantik dan natural, dengan sulam alis surabaya
March 3, 2021 at 3:08 am
thanks for your good site
March 3, 2021 at 3:28 am
thanks for your good site
March 3, 2021 at 3:30 am
thanks for your good site.
March 3, 2021 at 7:37 pm
It was an interesting study, I am waiting for the continuation.
March 3, 2021 at 8:43 pm
socigames – Download Games Crack, Repack PC Game , Cracked PC Game, Codex, Plaza, CPY, Gog, Elamigos, Torrent, Repack, Skidrow, Google drive.
March 4, 2021 at 12:42 pm
pinbahis betting site has started its activity in 2018, and with its popular casino games, it has been able to bring many users to this site with a great deposit in a short time. Pinbahis site has a variety of poker games such as: dice, backgammon, mines and high low and.. On this site you can compete live and play a variety of casino games. pinbahis is available in English, Istanbul Turkish and Persian. It has most users from Iran and Turkey. Pin Bahis offers its services to users in the sections of sports prediction, casino game betting, live fantasy sports, virtual sports, online fantasy games. Nowadays, with the advent of fraudulent betting sites, Pin Bahis can be the best option for investing with a small amount and earning the highest possible level, because this site has an international license, in which case the site can not do anything. Cheat or defraud your user.
March 4, 2021 at 12:43 pm
pinbahis betting site has started its activity in 2018, and with its popular casino games, it has been able to bring many users to this site with a great deposit in a short time. Pinbahis site has a variety of poker games such as: dice, backgammon, mines and high low and.. On this site you can compete live and play a variety of casino games. pinbahis is available in English, Istanbul Turkish and Persian. It has most users from Iran and Turkey. Pin Bahis offers its services to users in the sections of sports prediction, casino game betting, live fantasy sports, virtual sports, online fantasy games. Nowadays, with the advent of fraudulent betting sites, Pin Bahis can be the best option for investing with a small amount and earning the highest possible level, because this site has an international license, in which case the site can not do anything. Cheat or defraud your user.
March 4, 2021 at 12:44 pm
Betting site with direct banking portal is one of the topics searched by betting users on the Internet and is one of the most searched words by Google site in the field of betting. Many betting sites have been established in Iran and their number is increasing day by day, but choosing a reputable betting site that easily covers the banking portal with direct deposit of Iranian currency is a difficult task. But in this article, we have prepared a list of all Iranian betting sites in order of their validity, and we have explained to you about each of these sites, and in the following, you can read and make a good choice for betting Have Iranian forecast sites.
March 4, 2021 at 10:19 pm
Berdasarkan uji laboratorium ternyata teh bajakah memiliki anti oksidan ribuan kali lipat di bandingkan dengan tanaman lainnya
March 5, 2021 at 1:55 am
Link Nonton Download dunia21 Terbaru 2020 Kualitas HD Dari ns21 Stranger Things Sampai Insanitarium Subtitle Bahasa Indonesia.
March 5, 2021 at 1:56 am
Jangan berkecil hati, kami sajikan situs ns21 film online pengganti yang bisa kamu tonton secara gratis dan menggunakan subtitle bahasa Indonesia.
March 5, 2021 at 2:53 am
Thanks for sharing this quality data with me. i actually enjoyed reading. i’ll certainly be planning to share this uniform resource locator with my friends.
March 5, 2021 at 2:54 am
Apple pays users can receive money by following instant tips. However, they might have to look for the tips in the initial time. This is so because most often, they have no idea about the real-time solution. For knowledge and help at a reliable level, they can talk to the deployed Apple pay users to know about how to receive money from apple pay to cash app within the stipulated time.
March 5, 2021 at 2:54 am
Choosing the working methods is the best way to manage the transaction system through the apple pay to cash app. It is believed that for the proper use of Apple pay, having accurate knowledge is the most vital aspect. Thus, users should immediately talk to the Apple pay experts who can help them to understand the methods and let them easily carry the transactions.
March 5, 2021 at 9:20 pm
make up artist surabaya ini memulai awal karirnya dengan otodidak, dijaman yang serba modern ini kamu tidak perlu bingung untuk mengasah hobi kamu
March 6, 2021 at 8:07 am
دوره های آنلاین آیلتس
March 6, 2021 at 8:09 am
دوره های آموزشی آیلتس
March 6, 2021 at 8:10 am
online ielts learning
March 7, 2021 at 4:05 pm
یکی از مهمترین دلایلی که باعث می شود خط فک شما وضوح خود را از دست بدهد، افزایش سن و همچنین جاذبه است.
March 14, 2021 at 9:33 am
Thank you my friend
March 14, 2021 at 11:21 am
Fap Nation, fap nation games, fap nation android
FAP-Nation is a free website Download Games, Comics and more. Download Games For Android, Windows, Mac.
March 14, 2021 at 11:22 am
, fap nation games, fap nation android
FAP-Nation is a free website Download Games, Comics and more. Download Games For Android, Windows, Mac.
March 14, 2021 at 7:50 pm
JURAGANFILM Situs Nonton Film Sub Indo IndoXXI LayarKaca21 Movie CinemaIndo LK21 Movie CinemaXXI Ganool Streaming Online Watch Movies Download Film Subtitle Indonesia Lengkap Hanya Di Sini Juragan Film.
March 15, 2021 at 8:18 pm
manfaat daun mengkudu untuk lovebird
March 16, 2021 at 2:43 am
If you want to know how to delete cash app account, tap the app on iPhone. Although, if you have a newer version of the iPhone, you will need to click on “Reorder Apps” when it appears. Once you choose this, your apps will start shaking on the screen. When you shake, the exclusion fields will appear. On the other hand, click on the one associated with the Cash app and it will uninstall the app. Please visit our website for more details related to cash app.
March 21, 2021 at 9:42 am
Türkiye’nin en büyük sesli ve kameralı sohbet odalarına sizlerde ücretsiz olarak katılabilirsiniz. Bay ve bayan yüzlerce kullanıcıyla canlı şekilde sohbet etmenin keyfini çıkartın.
March 28, 2021 at 8:59 am
thenks admin http://wslikserverler.net turkyenin en kaliteli wslik taıtım sitesi
March 28, 2021 at 1:57 pm
Bandar MPO Deposit Pulsa 24 Jam online tanpa Non-Stop, Serta bonus rollingan terbaik
April 4, 2021 at 5:55 am
مزوتراپی مو چیست؟
می توان گفت که مزوتراپی درمان ریزش مو شامل تزریق دوزهای بسیار کمی از ترکیبات دارویی، مواد مغذی ، ویتامین های موثر ، تنظیم کننده های هورمونی ، اسیدهای آمینه ، گشاد کنندهای عروق و غیره در داخل پوست است که سبب تحریک رشد مو می شود. بنابراین به عنوان یک بهترین روش و درمان برای پیشگیری از طاسی و ریزش مو استفاده می شود.
مزوتراپی مو
April 4, 2021 at 8:29 am
solusi jasa pembuat website murah di bali
April 4, 2021 at 8:30 am
solusi perawatan kulit berminyak
May 6, 2021 at 8:10 am
my website : “thenewsnexus”
May 6, 2021 at 11:25 am
خرید آپارتمان در شهرک اندیشه کرج
May 7, 2021 at 11:48 pm
woooow
May 8, 2021 at 5:03 am
امروزه عمل بینی گوشتی فانتزی با بهکارگیری تکنیکهای جدید انجام میشود که نتیجه منحصر به فردی به همراه دارد. در گذشته عمل بینی گوشتی فانتزی با مشکلات فراوانی همراه بود که احتمال برگشتن نتیجه عمل و تغییر فرم بینی وجود داشت.
May 8, 2021 at 9:00 pm
sopbet adalah situs portal olah raga yang hadir di musim new normal saat pandemi Corona, kami berupaya memberikan berita bola yang akurat kebenarannya
May 9, 2021 at 1:13 pm
thank you adminn
May 9, 2021 at 9:31 pm
asentogel hadir untuk pencinta permainan togel online ataupun tebak nomor berhadiah. Dengan system enkripsi tingkat tinggi menjamin keamanan dan kerahasian data dari member-member kami.
May 10, 2021 at 2:28 pm
Nice Article – You ought to be a part of a contest for one of the finest sites on the internet. I will recommend this web site
May 11, 2021 at 6:32 am
Cloakersız reklam olmaz
May 12, 2021 at 4:11 am
Portal berita lampung utara terupduate dan terpecaya
May 14, 2021 at 6:24 pm
iyi web sitesi, paylaşım için teşekkür ederiz.
May 14, 2021 at 9:43 pm
wacthing and download for free JAV HD
May 15, 2021 at 2:16 am
We are a top rated University of Derby Assignment Help Online service here with experts specializing in a wide range of disciplines ensuring you get the assignments that score maximum grades.
May 15, 2021 at 7:51 pm
Cara daftar ataupun Login Binomo Indonesia terdiri dari 2 jenis tergantung pada pengguna komputer maupun handphone
May 16, 2021 at 3:09 pm
Thanyou for the article! dont forget visit my site! Surgawin
May 16, 2021 at 8:23 pm
gabile chat yöntemi ile bizleri ziyaret edebilirsiniz.
May 17, 2021 at 12:19 am
data sdy adalah situs pengeluaran result togel sidney terpercaya dari waktu ke waktu yang selalu memberikan informasi keluaran nomor yang terbaik