Re: [tuna-general] Re: TUNA NTP 服务重新上线了！

2017-02-10 文章 thulsr07 
GPS确实这点不好，好多机房用CDMA同步，但是CDMA授时模块比GPS贵多了。。

天线长点应该没事那还是个active antenna。但是当时那根好像略短

没有单独搞原子钟意义不大，一天能差40us的样子。至少一个月得和GPS对准一次。

On Friday, February 10, 2017 at 9:04:23 PM UTC-7, Justin Wong wrote:
> 机房在地下呢……
> 
> --
> Justin Wong
> 
> On Sat, Feb 11, 2017, at 12:01, Wang Kang wrote:
> > 引个天线甩到楼顶上?
> > 
> > 不过，GPS天线是不是不能过长? 会影响同步精度?
> > 
> > --
> > Wang Kang
> > 
> > On Sat, 11 Feb 2017, Justin Wong wrote:
> > 
> > > 那套 GPS 设备一直在我手上呢，可惜因为 GPS 的缘故，找不到地方 serve
> > >
> > > --
> > > Justin Wong
> > >
> > > On Sat, Feb 11, 2017, at 11:50, Wang Kang wrote:
> > >> TUNA的那套原子钟(铷钟还是铯钟我不记得了)就是陆四荣捐赠的... (大约四年前)
> > >> 貌似还有一套GPS模块，接到计算机的并口上，用硬件中断触发同步。
> > >>
> > >> 不过由于我没有努力工作(<---没错就是这个人)以及那段时间机房条件不太好，这套东西一直没有好好跑起来>_<
> > >>
> > >> --
> > >> Wang Kang
> > >>
> > >> On Sat, 11 Feb 2017, Xavier Yao wrote:
> > >>
> > >>> 是的，机房条件暂时不允许我们连GPS模块。
> > >>>
> > >>> --
> > >>> 姚沛然
> > >>> Peiran Yao
> > >>>
> >  From: thulsr07 
> >  Sent: Saturday, February 11, 2017 6:35:12 AM
> >  To: TUNA 主邮件列表
> >  Cc: Mirrors Administrators
> >  Subject: Re: TUNA NTP 服务重新上线了！
> > 
> >  很高兴看到NTP服务器重新上线！
> > 
> >  所以目前这个并没有直接连接GPS模块，而是一台stratum 2的中继对吗？因为我看到ntp的refid是一个境外的IP地址。
> > 
> > -- 
> > 
> > --- 
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Re: [tuna-general] Re: TUNA NTP 服务重新上线了！

2017-02-10 文章 Ray Song 

是啊，好有历史感。2013年6月由alick/scateu接手了？


因为我7月份就要毕业离开北京，有人对我架设的ntp服务器感兴趣并且希望继续做下去么？
目前现有软硬件设备如下：
Motorola Oncore GT+ GPS接收器一台，带pps，GPS有源天线，usb转串口线，略微修改过的支持oncore的ntp源代码。
PCI转并口卡一张，原生硬件中断，带有自己修改过的驱动代码可以支持pps(pulse per second)信号，用于精确计时。


On 2017-02-11, Wang Kang wrote:

TUNA的那套原子钟(铷钟还是铯钟我不记得了)就是陆四荣捐赠的... (大约四年前)
貌似还有一套GPS模块，接到计算机的并口上，用硬件中断触发同步。

不过由于我没有努力工作(<---没错就是这个人)以及那段时间机房条件不太好，这套东西一直没有好好跑起来>_<

--
Wang Kang
Blog: http://scateu.me
Fingerprint: 011F 0492 97D6 5D75 8AC4  6458 D43F 3CE2 3353 B7BD
HAM Callsign: BH1RLW

On Sat, 11 Feb 2017, Xavier Yao wrote:


是的，机房条件暂时不允许我们连GPS模块。

--
姚沛然
Peiran Yao

From: thulsr07 
Sent: Saturday, February 11, 2017 6:35:12 AM
To: TUNA 主邮件列表
Cc: Mirrors Administrators
Subject: Re: TUNA NTP 服务重新上线了！

很高兴看到NTP服务器重新上线！

所以目前这个并没有直接连接GPS模块，而是一台stratum 2的中继对吗？因为我看到ntp的refid是一个境外的IP地址。



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--
Ray
http://maskray.me

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Re: [tuna-general] Re: TUNA NTP 服务重新上线了！

2017-02-10 文章 Justin Wong 
机房在地下呢……

--
Justin Wong

On Sat, Feb 11, 2017, at 12:01, Wang Kang wrote:
> 引个天线甩到楼顶上?
> 
> 不过，GPS天线是不是不能过长? 会影响同步精度?
> 
> --
> Wang Kang
> 
> On Sat, 11 Feb 2017, Justin Wong wrote:
> 
> > 那套 GPS 设备一直在我手上呢，可惜因为 GPS 的缘故，找不到地方 serve
> >
> > --
> > Justin Wong
> >
> > On Sat, Feb 11, 2017, at 11:50, Wang Kang wrote:
> >> TUNA的那套原子钟(铷钟还是铯钟我不记得了)就是陆四荣捐赠的... (大约四年前)
> >> 貌似还有一套GPS模块，接到计算机的并口上，用硬件中断触发同步。
> >>
> >> 不过由于我没有努力工作(<---没错就是这个人)以及那段时间机房条件不太好，这套东西一直没有好好跑起来>_<
> >>
> >> --
> >> Wang Kang
> >>
> >> On Sat, 11 Feb 2017, Xavier Yao wrote:
> >>
> >>> 是的，机房条件暂时不允许我们连GPS模块。
> >>>
> >>> --
> >>> 姚沛然
> >>> Peiran Yao
> >>>
>  From: thulsr07 
>  Sent: Saturday, February 11, 2017 6:35:12 AM
>  To: TUNA 主邮件列表
>  Cc: Mirrors Administrators
>  Subject: Re: TUNA NTP 服务重新上线了！
> 
>  很高兴看到NTP服务器重新上线！
> 
>  所以目前这个并没有直接连接GPS模块，而是一台stratum 2的中继对吗？因为我看到ntp的refid是一个境外的IP地址。
> 
> -- 
> 
> --- 
> You received this message because you are subscribed to the Google Groups
> "TUNA 主邮件列表" group.
> To unsubscribe from this group and stop receiving emails from it, send an
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Re: [tuna-general] Re: TUNA NTP 服务重新上线了！

2017-02-10 文章 Wang Kang 

引个天线甩到楼顶上?

不过，GPS天线是不是不能过长? 会影响同步精度?

--
Wang Kang

On Sat, 11 Feb 2017, Justin Wong wrote:


那套 GPS 设备一直在我手上呢，可惜因为 GPS 的缘故，找不到地方 serve

--
Justin Wong

On Sat, Feb 11, 2017, at 11:50, Wang Kang wrote:

TUNA的那套原子钟(铷钟还是铯钟我不记得了)就是陆四荣捐赠的... (大约四年前)
貌似还有一套GPS模块，接到计算机的并口上，用硬件中断触发同步。

不过由于我没有努力工作(<---没错就是这个人)以及那段时间机房条件不太好，这套东西一直没有好好跑起来>_<

--
Wang Kang

On Sat, 11 Feb 2017, Xavier Yao wrote:


是的，机房条件暂时不允许我们连GPS模块。

--
姚沛然
Peiran Yao


From: thulsr07 
Sent: Saturday, February 11, 2017 6:35:12 AM
To: TUNA 主邮件列表
Cc: Mirrors Administrators
Subject: Re: TUNA NTP 服务重新上线了！

很高兴看到NTP服务器重新上线！

所以目前这个并没有直接连接GPS模块，而是一台stratum 2的中继对吗？因为我看到ntp的refid是一个境外的IP地址。


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Re: [tuna-general] Re: TUNA NTP 服务重新上线了！

2017-02-10 文章 Justin Wong 
那套 GPS 设备一直在我手上呢，可惜因为 GPS 的缘故，找不到地方 serve

--
Justin Wong

On Sat, Feb 11, 2017, at 11:50, Wang Kang wrote:
> TUNA的那套原子钟(铷钟还是铯钟我不记得了)就是陆四荣捐赠的... (大约四年前)
> 貌似还有一套GPS模块，接到计算机的并口上，用硬件中断触发同步。
> 
> 不过由于我没有努力工作(<---没错就是这个人)以及那段时间机房条件不太好，这套东西一直没有好好跑起来>_<
> 
> --
> Wang Kang
> Blog: http://scateu.me
> Fingerprint: 011F 0492 97D6 5D75 8AC4  6458 D43F 3CE2 3353 B7BD
> HAM Callsign: BH1RLW
> 
> On Sat, 11 Feb 2017, Xavier Yao wrote:
> 
> > 是的，机房条件暂时不允许我们连GPS模块。
> >
> > --
> > 姚沛然
> > Peiran Yao
> >
> > From: thulsr07 
> > Sent: Saturday, February 11, 2017 6:35:12 AM
> > To: TUNA 主邮件列表
> > Cc: Mirrors Administrators
> > Subject: Re: TUNA NTP 服务重新上线了！
> >
> > 很高兴看到NTP服务器重新上线！
> >
> > 所以目前这个并没有直接连接GPS模块，而是一台stratum 2的中继对吗？因为我看到ntp的refid是一个境外的IP地址。
> >
> 
> -- 
> 
> --- 
> You received this message because you are subscribed to the Google Groups
> "TUNA 主邮件列表" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to tuna-general+unsubscr...@googlegroups.com.
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Re: [tuna-general] Re: TUNA NTP 服务重新上线了！

2017-02-10 文章 Wang Kang 

TUNA的那套原子钟(铷钟还是铯钟我不记得了)就是陆四荣捐赠的... (大约四年前)
貌似还有一套GPS模块，接到计算机的并口上，用硬件中断触发同步。

不过由于我没有努力工作(<---没错就是这个人)以及那段时间机房条件不太好，这套东西一直没有好好跑起来>_<

--
Wang Kang
Blog: http://scateu.me
Fingerprint: 011F 0492 97D6 5D75 8AC4  6458 D43F 3CE2 3353 B7BD
HAM Callsign: BH1RLW

On Sat, 11 Feb 2017, Xavier Yao wrote:


是的，机房条件暂时不允许我们连GPS模块。

--
姚沛然
Peiran Yao

From: thulsr07 
Sent: Saturday, February 11, 2017 6:35:12 AM
To: TUNA 主邮件列表
Cc: Mirrors Administrators
Subject: Re: TUNA NTP 服务重新上线了！

很高兴看到NTP服务器重新上线！

所以目前这个并没有直接连接GPS模块，而是一台stratum 2的中继对吗？因为我看到ntp的refid是一个境外的IP地址。



--

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[tuna-general] Re: TUNA NTP 服务重新上线了！

2017-02-10 文章 Xavier Yao 
是的，机房条件暂时不允许我们连GPS模块。

--
姚沛然
Peiran Yao

清华大学 TUNA 协会
Tsinghua University TUNA Association

北京市海淀区清华园 1 号清华大学 100084
Tsinghua University, Haidian District, Beijing, 100084, P.R. China


From: thulsr07 
Sent: Saturday, February 11, 2017 6:35:12 AM
To: TUNA 主邮件列表
Cc: Mirrors Administrators
Subject: Re: TUNA NTP 服务重新上线了！

很高兴看到NTP服务器重新上线！

所以目前这个并没有直接连接GPS模块，而是一台stratum 2的中继对吗？因为我看到ntp的refid是一个境外的IP地址。

On Sunday, January 8, 2017 at 5:18:58 AM UTC-7, 陈晟祺 wrote:
> 补充一下，服务器的域名是 ntp.tuna.tsinghua.edu.cn
>
> 在 2017年1月8日星期日 UTC+8下午8:13:51，Mirrors Administrators写道：
> > Hi Tunars,
> >
> >
> >
> >最近 NTP Pool
> > 项目进行了中国区的建设，公开征集了一批 NTP 服务器。
> >
> > 作为对此行动的响应，TUNA
> > 重新上线了（关闭多年的） NTP 服务，并且加入了 NTP Pool。
> >
> >服务器地址：166.111.206.172 (IPv4)
> >
> > 2402:f000:1:416:166:111:206:172 (IPv6)
> >
> >各大主流操作系统均可以更改 NTP
> > 服务器，欢迎使用！
> >
> >P.S. 请不要将 TUNA NTP
> > 服务作为精确可靠的时间来源，我们不对此提供任何保证。
> >
> >
> >
> > ===
> >
> > 陈晟祺
> >
> > Shengqi Chen
> >
> >
> >
> > 清华大学 TUNA
> > 协会
> >
> > Tsinghua University TUNA Association
> >
> >
> >
> > PGP Fingerprint: F858 3EFA A9A9 1F3A A34B  3C92 CE11 A7B0 7B3A B946
> >
> >
> >
> >

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[tuna-general] Re: TUNA NTP 服务重新上线了！

2017-02-10 文章 thulsr07 
很高兴看到NTP服务器重新上线！

所以目前这个并没有直接连接GPS模块，而是一台stratum 2的中继对吗？因为我看到ntp的refid是一个境外的IP地址。

On Sunday, January 8, 2017 at 5:18:58 AM UTC-7, 陈晟祺 wrote:
> 补充一下，服务器的域名是 ntp.tuna.tsinghua.edu.cn
> 
> 在 2017年1月8日星期日 UTC+8下午8:13:51，Mirrors Administrators写道：
> > Hi Tunars,
> > 
> >  
> > 
> >    最近 NTP Pool
> > 项目进行了中国区的建设，公开征集了一批 NTP 服务器。
> > 
> > 作为对此行动的响应，TUNA
> > 重新上线了（关闭多年的） NTP 服务，并且加入了 NTP Pool。
> > 
> >    服务器地址：166.111.206.172 (IPv4)
> > 
> > 2402:f000:1:416:166:111:206:172 (IPv6)
> > 
> >    各大主流操作系统均可以更改 NTP
> > 服务器，欢迎使用！
> > 
> >    P.S. 请不要将 TUNA NTP
> > 服务作为精确可靠的时间来源，我们不对此提供任何保证。
> > 
> >  
> > 
> > ===
> > 
> > 陈晟祺
> > 
> > Shengqi Chen
> > 
> >  
> > 
> > 清华大学 TUNA
> > 协会
> > 
> > Tsinghua University TUNA Association
> > 
> >  
> > 
> > PGP Fingerprint: F858 3EFA A9A9 1F3A A34B  3C92 CE11 A7B0 7B3A B946
> > 
> >  
> > 
> >  

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