Re: 9037-002 sysplex timer connect with external source (GPS)
Thanks AL shing information On 12/9/06, Al Shing <[EMAIL PROTECTED]> wrote: On Fri, 8 Dec 2006 15:24:39 +0800, Tommy Tsui <[EMAIL PROTECTED]> wrote: >I Know someone use symmetricom as the external GPS time source. But what is >your plan if you using STP later . STP does not have the RS-232 port. >thanks > In the announcement letter for STP on October 10, 2006, IBM had a Statement of Direction that read: "Statement of general direction Enhanced Coordinated Server Time accuracy IBM intends to enhance the accuracy of initializing and maintaining Coordinated Server Time to an international time standard such as Coordinated Universal Time (UTC). The then current server is planned to have the capability of attaching to an external time source, such as a Global Positioning System (GPS) receiver. Network Time Protocol (NTP) client support IBM intends to enhance the STP design to provide Network Time Protocol (NTP) client capability, so that Coordinated Server Time may be initialized and maintained to time provided by an NTP server. The purpose of this function is to allow the same time across an enterprise comprised of heterogeneous platforms. All statements regarding IBM's plans, directions, and intent are subject to change or withdrawal without notice. Any reliance on these Statements of General Direction is at the relying party's sole risk and will not create liability or obligation for IBM." Either we just move the serial cable from the S100 to the z9, or we set up STP to use NTP from the S100. In any case, there is no rush since the z9 will work with the 9037s that we already have installed. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: 9037-002 sysplex timer connect with external source (GPS)
On Fri, 8 Dec 2006 15:24:39 +0800, Tommy Tsui <[EMAIL PROTECTED]> wrote: >I Know someone use symmetricom as the external GPS time source. But what is >your plan if you using STP later . STP does not have the RS-232 port. >thanks > In the announcement letter for STP on October 10, 2006, IBM had a Statement of Direction that read: "Statement of general direction Enhanced Coordinated Server Time accuracy IBM intends to enhance the accuracy of initializing and maintaining Coordinated Server Time to an international time standard such as Coordinated Universal Time (UTC). The then current server is planned to have the capability of attaching to an external time source, such as a Global Positioning System (GPS) receiver. Network Time Protocol (NTP) client support IBM intends to enhance the STP design to provide Network Time Protocol (NTP) client capability, so that Coordinated Server Time may be initialized and maintained to time provided by an NTP server. The purpose of this function is to allow the same time across an enterprise comprised of heterogeneous platforms. All statements regarding IBM's plans, directions, and intent are subject to change or withdrawal without notice. Any reliance on these Statements of General Direction is at the relying party's sole risk and will not create liability or obligation for IBM." Either we just move the serial cable from the S100 to the z9, or we set up STP to use NTP from the S100. In any case, there is no rush since the z9 will work with the 9037s that we already have installed. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: 9037-002 sysplex timer connect with external source (GPS)
On Thu, 7 Dec 2006 20:44:02 -0600, Paul Gilmartin <[EMAIL PROTECTED]> wrote: >"sysplex timer output"? Does this mean the S100 replaces the sysplex timer? >Did they reverse-engineer the protocol, which IBM considers a trade secret? >or does it connect to a 9037 via RS-232? Other (specify)? > Here's the blurb from the S200 brochure: "Sysplex Timer for Mainframe Sync A dedicated Sysplex timer port outputs serial time strings for IBM mainframe Sysplex systems. The Sysplex Timer provides a common time reference across all the members of an IBM Sysplex. The Sysplex Timer is a key component when systems on multiple CPCs share access to the same data." It uses the RS-232 interface to the 9037. >> Now, I never have to worry about it, and the sysplex timer is always in >> sync with the LAN NTS servers with 0 deviation. >> >Aw, c'mon; give an error bar -- 0 what? picoseconds? milliseconds? hours? Typically 0.0001 second deviation or less. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: 9037-002 sysplex timer connect with external source (GPS)
I Know someone use symmetricom as the external GPS time source. But what is your plan if you using STP later . STP does not have the RS-232 port. thanks On 12/8/06, Paul Gilmartin <[EMAIL PROTECTED]> wrote: On Thu, 7 Dec 2006 18:44:50 -0600, Al Shing wrote: > > We implemented GPS external time sources via the Symmetricom SyncServer > S100 last year. The current model is the S200, listed on www.sync-server.com > > Using the S100's sysplex timer output, our deviation from the atomic time > "sysplex timer output"? Does this mean the S100 replaces the sysplex timer? Did they reverse-engineer the protocol, which IBM considers a trade secret? or does it connect to a 9037 via RS-232? Other (specify)? > Now, I never have to worry about it, and the sysplex timer is always in > sync with the LAN NTS servers with 0 deviation. > Aw, c'mon; give an error bar -- 0 what? picoseconds? milliseconds? hours? -- gil -- StorageTek INFORMATION made POWERFUL -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: 9037-002 sysplex timer connect with external source (GPS)
On Thu, 7 Dec 2006 18:44:50 -0600, Al Shing wrote: > > We implemented GPS external time sources via the Symmetricom SyncServer > S100 last year. The current model is the S200, listed on www.sync-server.com > > Using the S100's sysplex timer output, our deviation from the atomic time > "sysplex timer output"? Does this mean the S100 replaces the sysplex timer? Did they reverse-engineer the protocol, which IBM considers a trade secret? or does it connect to a 9037 via RS-232? Other (specify)? > Now, I never have to worry about it, and the sysplex timer is always in > sync with the LAN NTS servers with 0 deviation. > Aw, c'mon; give an error bar -- 0 what? picoseconds? milliseconds? hours? -- gil -- StorageTek INFORMATION made POWERFUL -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: 9037-002 sysplex timer connect with external source (GPS)
On Wed, 29 Nov 2006 22:39:44 +0800, Tommy Tsui <[EMAIL PROTECTED]> wrote: >hi all, >Is there any shop use the 9037-002 sysplex timer with external source >(GPS)any referenceAlso is there a good time to invest on external >source. As I know only 9037-002 have a port to install external source GPS. >z-109 STP cannot connect to external source GPS like GPS. is that true? > We implemented GPS external time sources via the Symmetricom SyncServer S100 last year. The current model is the S200, listed on www.sync-server.com Using the S100's sysplex timer output, our deviation from the atomic time is 0. When we were using the dial-up modem, it always was at least .1 seconds off, and sometimes more. We always had to go in and test the modem to make sure it was still working. Now, I never have to worry about it, and the sysplex timer is always in sync with the LAN NTS servers with 0 deviation. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: 9037-002 sysplex timer connect with external source (GPS)
Purchase interlink cable(s) and software from IBM (sole source). I don't remember actual software name but your IBM Marketting Rep. can find it. Tommy Tsui wrote: Hi Rich, Thanks for your information. But I still have a litte question about the - 1 ) interlink cable - is it buy from IBM 2) what related software for PC do you have name? 3) where can I find the related software source...is it IBM approved software? thanks tommy On 12/5/06, Rick Fochtman <[EMAIL PROTECTED]> wrote: - > thank for your information. I am using 9037-002...can you give me more > detailed information. about the interface card and what does you mean > 9037-002 boxes.. > Since my boss ask me to connect the 9037-002 to PC server ..but I have no > ideas how to do it. > thanks rick --- Step 1: Buy the PC interface card from IBM, with the interlink cable and related software for the PC. Step 2: Install same in PC to be used as interface. Connect interlink cable(S) between PC and 9037-002 boxes as indicated in documentation. Step 3: Connect 9600B (or faster) modem to PC with appropriate cable. Also connect modem to telephone line. Step 4: Activate Sysplex Timer application on PC and follow on-screen instructions. Have the phone number handy for your external time source. I used ACTS, the Automated Computer Time Service from the National Institute of Standards and Technology, in Boulder, Colorado. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: 9037-002 sysplex timer connect with external source (GPS)
Hi Rich, Thanks for your information. But I still have a litte question about the - 1 ) interlink cable - is it buy from IBM 2) what related software for PC do you have name? 3) where can I find the related software source...is it IBM approved software? thanks tommy On 12/5/06, Rick Fochtman <[EMAIL PROTECTED]> wrote: - > thank for your information. I am using 9037-002...can you give me more > detailed information. about the interface card and what does you mean > 9037-002 boxes.. > Since my boss ask me to connect the 9037-002 to PC server ..but I have no > ideas how to do it. > thanks rick --- Step 1: Buy the PC interface card from IBM, with the interlink cable and related software for the PC. Step 2: Install same in PC to be used as interface. Connect interlink cable(S) between PC and 9037-002 boxes as indicated in documentation. Step 3: Connect 9600B (or faster) modem to PC with appropriate cable. Also connect modem to telephone line. Step 4: Activate Sysplex Timer application on PC and follow on-screen instructions. Have the phone number handy for your external time source. I used ACTS, the Automated Computer Time Service from the National Institute of Standards and Technology, in Boulder, Colorado. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: 9037-002 sysplex timer connect with external source (GPS)
thanks all your information.. thanks On 11/29/06, Tommy Tsui <[EMAIL PROTECTED]> wrote: hi all, Is there any shop use the 9037-002 sysplex timer with external source (GPS)any referenceAlso is there a good time to invest on external source. As I know only 9037-002 have a port to install external source GPS. z-109 STP cannot connect to external source GPS like GPS. is that true? Many thanks any comment will be appreciated.. Tommy -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: 9037-002 sysplex timer connect with external source (GPS)
Here's the doc from NIST: http://tf.nist.gov/service/pdf/computertime.pdf This document, on page 5, describes the algorithm for calculating a loop- back to calibrate the time signal. The 9037-002 Sysplex Timer utilizes this feature. On my Sysplex Timer, the most recent time synchronization message had the value 111.9 in the field msADV. Since this value starts at 45 ms, the 111.9 value is that measured by the loop-back calibration algorithm. Brian On Mon, 4 Dec 2006 16:00:07 -0700, Paul Gilmartin wrote: >Time was when ACTS counseled against using such a high speed modem >because buffering and DSP introduce unpredictable latencies. >Simpler is Better. At that time, they also documented that the OTM >was correct at the center of (I forget which) bit in the OTM character. >I no longer see such text in the ACTS doc. Perhaps it remains in >the help text that ACTS supplies on command. > -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: 9037-002 sysplex timer connect with external source (GPS)
In a recent note, Rick Fochtman said: > Date: Mon, 4 Dec 2006 11:07:59 -0600 > > Step 1: Buy the PC interface card from IBM, with the interlink cable and > related software for the PC. > > Step 2: Install same in PC to be used as interface. Connect interlink > cable(S) between PC and 9037-002 boxes as indicated in documentation. > > Step 3: Connect 9600B (or faster) modem to PC with appropriate cable. > Also connect modem to telephone line. > Time was when ACTS counseled against using such a high speed modem because buffering and DSP introduce unpredictable latencies. Simpler is Better. At that time, they also documented that the OTM was correct at the center of (I forget which) bit in the OTM character. I no longer see such text in the ACTS doc. Perhaps it remains in the help text that ACTS supplies on command. > Step 4: Activate Sysplex Timer application on PC and follow on-screen > instructions. Have the phone number handy for your external time source. > I used ACTS, the Automated Computer Time Service from the National > Institute of Standards and Technology, in Boulder, Colorado. -- gil -- StorageTek INFORMATION made POWERFUL -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: 9037-002 sysplex timer connect with external source (GPS)
- thank for your information. I am using 9037-002...can you give me more detailed information. about the interface card and what does you mean 9037-002 boxes.. Since my boss ask me to connect the 9037-002 to PC server ..but I have no ideas how to do it. thanks rick --- Step 1: Buy the PC interface card from IBM, with the interlink cable and related software for the PC. Step 2: Install same in PC to be used as interface. Connect interlink cable(S) between PC and 9037-002 boxes as indicated in documentation. Step 3: Connect 9600B (or faster) modem to PC with appropriate cable. Also connect modem to telephone line. Step 4: Activate Sysplex Timer application on PC and follow on-screen instructions. Have the phone number handy for your external time source. I used ACTS, the Automated Computer Time Service from the National Institute of Standards and Technology, in Boulder, Colorado. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: 9037-002 sysplex timer connect with external source (GPS)
Hi rick, thank for your information. I am using 9037-002...can you give me more detailed information. about the interface card and what does you mean 9037-002 boxes.. Since my boss ask me to connect the 9037-002 to PC server ..but I have no ideas how to do it. thanks rick tommy On 12/1/06, Rick Fochtman <[EMAIL PROTECTED]> wrote: - > Hi Rick, > How did you sync with PC? ar you using 9037-002 ? how can you connect > to PC > server? > thanks for your help -- We purchased the PC interface card so that the 9037 and PC were "connected"; there was software included with the card to provide a GUI. And yes, these were 9037-002 boxes. They worked just fine. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: 9037-002 sysplex timer connect with external source (GPS)
- Hi Rick, How did you sync with PC? ar you using 9037-002 ? how can you connect to PC server? thanks for your help -- We purchased the PC interface card so that the 9037 and PC were "connected"; there was software included with the card to provide a GUI. And yes, these were 9037-002 boxes. They worked just fine. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: 9037-002 sysplex timer connect with external source (GPS)
Hi Rick, How did you sync with PC? ar you using 9037-002 ? how can you connect to PC server? thanks for your help Tommy On 11/30/06, Rick Fochtman <[EMAIL PROTECTED]> wrote: --- > hi all, > Is there any shop use the 9037-002 sysplex timer with external source > (GPS)any referenceAlso is there a good time to invest on external > source. As I know only 9037-002 have a port to install external source > GPS. > z-109 STP cannot connect to external source GPS like GPS. is that true? --- We operated a matched pair of Sysplex Timers for a number of years. They were set-up to use a PC to dial the Automated Computer Time (ACT) service on a weekly basis for corrections. Connection was via a 2400baud Hayes modem and it worked just fine. The PC was one of our retired desktop machines. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: 9037-002 sysplex timer connect with external source (GPS)
--- hi all, Is there any shop use the 9037-002 sysplex timer with external source (GPS)any referenceAlso is there a good time to invest on external source. As I know only 9037-002 have a port to install external source GPS. z-109 STP cannot connect to external source GPS like GPS. is that true? --- We operated a matched pair of Sysplex Timers for a number of years. They were set-up to use a PC to dial the Automated Computer Time (ACT) service on a weekly basis for corrections. Connection was via a 2400baud Hayes modem and it worked just fine. The PC was one of our retired desktop machines. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
9037-002 sysplex timer connect with external source (GPS)
hi all, Is there any shop use the 9037-002 sysplex timer with external source (GPS)any referenceAlso is there a good time to invest on external source. As I know only 9037-002 have a port to install external source GPS. z-109 STP cannot connect to external source GPS like GPS. is that true? Many thanks any comment will be appreciated.. Tommy -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
