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1. Hint You can change the device name to one convenient for your site preferably one that helps you to later identify the exact physical location of the device Administrative Hub Note the Administrative Hub configuration item is reserved for future use ND Clocks User Manual Rev 2 0 1 Sep 08 12 Symmetricom Inc Device Settings Each network clock can be configured to display time or date in the format that you prefer using time zone offsets and DST settings to completely customize it relative to UTC time The device settings window will display the title NTP Clock Configuration in the title bar of the window Any changes made in this window will not be applied until you click the OK button to exit the window or the Apply button to immediately see the changes The top right section of the Window shows a snapshot of the ND display constantly updated This update is not precise but is meant to give you a view of the clock display for troubleshooting and maintenance purposes Network Time Protocol NTP Parameters Allows for setting the NTP mode and parameters of the SNTP client in the network clock These settings are located in the upper left hand section of the device settings window The Primary Source information must be configured in order to acquire time from an NTP source Enter either the IP address or Internet address URL for the NTP source If available enter a Secondary Source for backup The
2. European Union button select the convenient Current Windows Setting button to apply the DST rules as currently configured for your current Windows OS Daylight Savings lime Configuration Daylight Savings Time Configuration Dash Bist Daybght Biss jo 00 00 Bins is negative Disable de lime ow wet zn Disable dyg time fight jo 00 00 zr Bins is negative Tene relerence lor daybghl savings ne felt Tene relerence lor daybghl savrigs tare shall Use UTC wetead of local tme V Use UTC metead ol local lame Daylight savings time start Daylight savings time end Daylight savings time start Daylight savings time end C fiit 6 Fut C Fe C Fen E Second C Second C Second C Second C Thad C Thad C Thid C Thad C Fourth C Fourth C Fourth C Fourth C Last C Last 5 Last G Last C Abrohte C Abrohte C Absokte C Absokte Day ol vend Sunday Day of vemm Sunday Day ol vemm Sunday joo Day of vmm Sunday Month March Month November X Month Maich Month October ho Day of month 8 Day of month Day of month Day of month Tae 02 00 00 ET Time no 00 no Time m o0 oo p Time or 00 00 p US Canada Standard US Canada Standard ETIN EE SEN ME GEN Careri Windows Setting Cancel Current Windows Setting Cancel US Canada DST standard adopted Spring 2007 EU DST standard Click OK to close the Window The DST rules will be applied when you click OK or Apply on the main Configuration window Telnet Option T
3. Dynamic Host Configuration Protocol is a mechanism for automating the configuration of networked devices that use TCP IP When DHCP is enabled DHCP configuration acquisition will overwrite any manual configuration items A precursor to DHCP is BOOTP The ND can obtain configuration from a BOOTP server when no DHCP server is present Factory default DHCP enabled The following RFC2132 defined optional configuration items are when available used by the ND clock for configuration purposes Option No Comments Time Offset 2 The value provided will be used for the time zone offset configuration unless it is defined as zero in which case it will be ignored and the ND will rely on internal configuration Note this option does not provide information appropriate for dynamic daylight savings time use Router 3 The first IP address provided will be used for router gateway configuration Domain Name Server 6 Up to two server IP addresses may be specified ND clock will treat addresses as primary and secondary DNS servers Network Time Protocol Server 42 Up to two server IP addresses may be specified ND clock will treat addresses as primary and secondary NTP servers Important Note A network clock will not function properly if configured to use DHCP services when no DHCP server is present on the network Device Name DHCP Name Registration All ND network appliances can be provided with a device name By
4. Power Requirements oer teo Toten nire NT ees teer ete tte tene TOI 37 Operating Storage Temperature amp Humidity esses eene nennen nn rennen enint nennen nennen 37 Compliance te deese tere ede vasa ic esed DR GEH URS ETE 38 Limited Md ide 39 Lamitationiof Liability 3 eene etes qued ec i eise pede e e REIR EHE USER HT 39 Proprietary Notice coe e o PEE A duce Due ER EINER EUST RENE RU ER RES ORENSE per 39 Appendix A WinDiscovery Global Password Feature sese ener enne erre 40 Enabling Global Password esie ree dese ie ER ERR ER EU de Ree EINER LR CERES ALAS Red 41 Disabling the Global Password iia 41 Changing the Global Password ii ia 42 ND Clocks User Manual Rev 2 0 1 Sep 08 Symmetricom Inc Introduction Network Time Display ND is a series of versatile multi featured Network Time Protocol NTP driven digital clock displays These devices have a built in SNTP Simple Network Time Protocol client and are designed to display time referenced to either an internal or Internet provided NTP server using SNTP The ND network clocks can be configured to display local time for any time zone worldwide by enabling time zone offset and automatic DST Daylight Saving Time adjustments This device allows for maintenance free reliable quiet operation The ND series II consists of the following ND 2 and ND 4 6 digit display members DisplayType Six Digit Digital Time Date 12 h
5. 408 428 7907 worldwide ND Clocks User Manual Rev 2 0 1 Sep 08 35 Symmetricom Inc Specifications Model ND 2 ND 4 Dimension LED Height inches cm 2 3 5 8 4 10 DA Time hh mm ss hh mm ss E Disp 12 24 hour mode e A Sitti AM PM indicator A Date US mm dd yr e Date European dd mm yr Color Options Red Desktop Shelf Mounting an Keyhole Bracket Wall a BR46 option Rackmount p Weight Ibs kg 4 1 8 8 2 3 7 a 19 48 3 w e rackmount Width inches cm ears 25 25 64 1 O Dimensions 17 43 2 without Height inches cm 3 5 8 9 7 63 19 4 Depth inches cm 6 5 16 5 4 25 10 8 Color Black e A 100 240VAC Z Voltage 10 Q Alternating 90 264 VAC E Current Frequency 47 63 Hz o iii Power lt 15W A Standard ni IEC male Connector A 5 jack A Power Over Voltage 48VDC 5 Ethernet to Power lt 12 95 W a E IEEE 802 3af class 0 POE option Connector RJ45 Battery A Maintenance Free Rechargeable Manganese Lithium Coin Cell 3V 17mAh Panasonic ML1220 MODEL Battery 3V 17 mAh Coin Cell ND 2 bid ND 4 Rechargeable Manganese Lithium Panasonic ML1220 V1A ND Clocks User Manual Rev2 0 1 Sep 08 36 Symmetricom Inc Communications Protocol e DHCP enabled by default configuration or via Static IP mode entry o Network configuration IP address Netmask o Gateway
6. Automatic daylight savings time is disabled You must enable and configure the settings to display local time with DST ND Clocks User Manual Rev 2 0 1 Sep 08 6 Symmetricom Inc NTP Addressing Modes Unicast Query The network clock supports the unicast method of NTP packets transfer Unicast method involves direct transfer of requested information from the NTP server to the NTP client based on a query or NTP time request The unicast method is supported simultaneously when either the broadcast or multicast modes are selected Broadcast The network clock supports the broadcasting of NTP packets This feature is useful in situation where network administration may wish to avoid the network traffic created by a large number of clients making periodic NTP requests or in situations where such periodic requests end up synchronized is such a manner as to exceed the NTP100 s ability to reply The broadcast mode is a widespread or open ended broadcast not intended for any specific IP address The ND clock listens for NTP UDP broadcasts using the broadcast address 255 255 255 255 Note some firewalls and routers will not forward UDP broadcasts by default Security configurations may need to be adjusted to allow the UDP broadcast packets to pass on the configured port Multicast The network clock also supports multicast addressing of NTP packets as a recently added feature As opposed to broadcast mode which is a widespread
7. DHCP server has issued new refreshed addresses Close the WinDiscovery application and restart 2 The discovery process was not complete before selecting clock s After selecting Discover button wait until the discovery status indicates 100 completion 3 Verify that the physical network cables and equipment and configuration for UDP have not changed 4 Verify that you are currently the only user accessing the clock via WinDiscovery or telnet 5 The network may currently be experiencing heavy traffic which is reducing bandwidth and or causing collisions with the UDP messages packets between the clock s and WinDiscovery Since delivery of UDP messages are not guaranteed this can cause WinDiscovery to not receive the latest configuration or status packets and thus show outdated or garbled information In some cases the clock may not be discovered and displayed in the WinDiscovery device tree In others previously discovered clocks may no longer be accessible or responding e Press the Discover button again and wait until the discovery process completes e Close the current WinDiscovery session and restart the WinDiscovery application e Take steps to increase the bandwidth and reduce network traffic e If this is an ongoing problem consider the Telnet configuration method or remove the clock system to an isolated LAN Problem Clock appears in RED text under WinDiscovery device tree Problem Clock is being assigned an IP a
8. To set the clock to receive multicast messages set the NTP multicast option to yes Enter the broadcast multicast port normally 123 Note If the clock is set to receive broadcasts or multicasts the clock will not query To return the unit to unicast query mode reply no for broadcast and multicast options Set NTP Client Parameters The ND clocks are set to query for NTP on a regularly scheduled basis factory set to 10 minute intervals To adjust the settings for query interval and additional broadcast multicast NTP client parameters select this option Note these settings are considered advanced settings and under most typical operating circumstances it is not necessary nor is it suggested to change the advanced settings options Please refer to the WinDiscovery Advanced Settings section for the default values Configure Telnet Interface Select this option to turn off the Telnet access If Telnet is allowed define the Telnet port normally 23 If turned off the Telnet session will be ended and the user must use WinDiscovery the RS232 access or the Reset button to regain access by Telnet ND Clocks User Manual Rev 2 0 1 Sep 08 26 Symmetricom Inc Ping Via Device Allows the network clock to ping an IP DNS address such as that of the NTP server This is useful in situations where the communication link path from the network clock to the NTP server is in question Note this feature is not available und
9. create a unique password for each clock You may enable the Remember this password for the session checkbox to eliminate typing the password for each configuration change WinDiscovery will not remember or store the password s after the session is closed It is important for the user system administrator to maintain passwords in a safe place If you enter the wrong password and selected the remember password checkbox you will receive an error upon selecting OK or Apply to any configuration changes You can close the WinDiscovery session to forget the password s however this will require entering the password again for each device Alternately you can remove the incorrect password entry during a WinDiscovery session by going to the right click menu for the device and selecting Forget memorized password option This option will be added to the right click list and will only be displayed if a password is memorized Properties Network Configuration Device Settings Set Password Set Time Date Status Reset Device Forget memorized password k Note the factory default password is public ND Clocks User Manual Rev 2 0 1 Sep 08 20 Symmetricom Inc Hint To remove password protection for a clock select the Set Password command You will be prompted to enter the old password Enter the old password Do not enter anything into the New Password or Confirm Password fields Click OK to save Upon you
10. date displayed on the clock The brightness control is a sliding bar to vary the brightness of the clock This feature is useful to accommodate lighting conditions and viewer needs The ND clocks can be configured to display time in 12 or 24 hour format or date in MM DD YY indicated as US or DD MM YY indicated as European format The network clock will flash its colons at a rate of 1 Hz once per second when it is not synchronized to an NTP server This is the default configuration for the display if it is not synchronized to an NTP time server It will continue to display time using its internal battery backed RTC real time clock while flashing its colons The network clock may be configured to display dashes to indicate that the unit is not synchronized to an NTP time server To enable this feature select the Enable displaying dashes checkbox of the Display dashes when not synced w NTP server category The time delay for displaying dashes can also be adjusted in hour increments Time Zone Settings The Time Zone button included in the right half of the window gives the clock complete flexibility to display any time zone First select the time zone by clicking the Time Zone button This opens a new window that gives you a list of time zones including descriptions to help with the selection Select the Time Zone and click OK to close the window Changes are not applied until you click OK or the Apply button on the main Confi
11. is saved and returned as an error to WinDiscovery This error status is available to the user via the Status window on WinDiscovery ND Clocks User Manual Rev 2 0 1 Sep 08 31 Symmetricom Inc e If static IP addressing is being used the original conflicting static IP address can be restored by doing a soft restart of the ND clock using either WinDiscovery or telnet prior to changing any other configuration parameters IMPORTANT NOTE if the configuration of the network clock is changed while a 169 254 xxx xxx is being used for example changing the Time Zone offset then the current 169 254 xxx xxx address will become the permanent static address and the original conflicting static address is lost At this point it is necessary to manually change the static IP address to a one that will not conflict or you may do a Reset Configuration to restore the system to factory default settings e If DHCP was selected and the ND fell back to a 169 254 xxx xxx address approximately every 10 depending upon the Advanced Settings values minutes the Ethernet interface will be reinitialized and the ND clock will attempt to get an IP address from the DHCP server If the ND is successful the error will be cleared and the new address from the DHCP server will be used If a discovery was done using WinDiscovery or telnet was used this initialization will be delayed by 2 hours Problem Clock is unable to find NTP reference either Primary
12. necessary to return the network clock to its factory default configuration A reset configuration button labeled RESET is located on the electronics cover on the rear of the network clock chassis to perform this function To reset configuration to factory default Depress and hold the reset configuration button on the rear of the clock Remove power from the device while continuing to hold the reset button down Apply power to clock and continue holding the reset button down for five seconds The network clock device configuration will now be reset including the password and the unit will need to be reconfigured Bee d Default Password The factory default password for the network clock is public ND Clocks User Manual Rev 2 0 1 Sep 08 8 Symmetricom Inc Configuration Methods Basic operation of the network clock is configured via the WinDiscovery software supplied with the clock or via Telnet if the IP address of the clock is known or via the RS 232 interface Only one configuration method should be used at a time WinDiscovery The WinDiscovery WD program is a Windows based program supplied with the network clock WinDiscovery is currently supported under Windows 2000 XP 2003 Server Vista operating systems To install the WinDiscovery program on your server workstation PC complete the following steps 1 Insert the software CD that shipped with your network clock 2 Run the setup exe application fr
13. option NOTE If you select this option you will be disconnected from the session upon completion whether you actually change any entries or not You have the choice of using DHCP for automatic IP Configuration or entering the data in these screens for Static IP addressing By factory default the clock is set to DHCP address mode If you select DHCP no other questions will be displayed you will be disconnected from the session and you will not be able to Telnet to this clock until you learn the DHCP provided IP address The WinDiscovery network device management tool can be used to determine the IP address of the clock To manually enter the static address IP information enter N for the DHCP or Enter for the default and enter the IP Netmask Gateway Primary DNS and Secondary DNS server Set NTP Server Parameters The network clocks support a Primary and a Secondary NTP source in static IP addressing mode Select this option to setup or change the NTP reference sources Enter the name or the IP address for the NTP reference server Enter the server port for each NTP reference source normally 123 Note that in DHCP addressing mode the DHCP server will provide this information Set NTP Unicast Multicast Broadcast Mode The ND clocks are set by default to unicast mode query for NTP on a regularly scheduled basis factory set to 10 minute intervals To set the clock to receive broadcasts set the NTP broadcast option to yes
14. status information specific to the analog stepper motor clock Note this menu items applies to analog stepper motor models only Enable Disable User Control of Digital Display The digital display clock may be used in a special user control mode allowing specific time date character information to be displayed other than the actual time display mode based on the NTP server time This mode is password protected Note this menu items applies to digital time display models only Enter X to exit the Telnet menu This will disconnect your Telnet session from the clock ND Clocks User Manual Rev 2 0 1 Sep 08 28 Symmetricom Inc RS 232 Terminal Configuration The recommended method of configuring the ND clock is via the network interface using either the WinDiscovery application or Telnet In addition the installer may opt to configure or update the firmware for the device using an alternate method than the standard Ethernet port A serial port interface has been included as a provision This item can be accessed on the rear of the chassis The RS 232 configuration interface behaves identically to the Telnet interface To communicate with the network clock in this manner connect any RS 232 terminal or PC serial port and serial terminal application such as Windows HyperTerminal to the 9 pin DB9 connector A standard straight through serial non null modem communication cable should be used The settings for the RS23
15. to re initialize its communication port and configuration Problem Clock display shows only dashes Possible Reasons solutions 1 The clock display is not synchronizing with an NTP server and the display has been configured to display dashes The time duration delay before displaying dashes has elapsed Verify the NTP server address is valid and or reconfigure the clock ND Clocks User Manual Rev 2 0 1 Sep 08 33 Symmetricom Inc Problem Colons are flashing for several seconds when I apply new configuration settings under WinDiscovery or Telnet Problem Colons are flashing for several seconds at random times Possible Reasons solutions 1 This is also normal behavior each time new configuration settings are downloaded to the clock and saved using either WinDiscovery or Telnet During this time the network clock will receive the new configuration settings and save them to its flash memory The network clock then re initializes soft restart and continues operation with the new settings The only time to be concerned is if the colons do not stop flashing after several seconds 2 This can occur if multiple users are using WinDiscovery Telnet or both on the network simultaneously Verify that you are the only current user of WinDiscovery or Telnet and or that only you can administer and or that you have password protection enabled 3 This is also normal behavior when the clock cannot reach the primary or secondary NTP time serv
16. user to remotely reset the unit This feature does not restore the unit to its factory default state Simply right click on the clock you are interested in a select Reset Device Soft Restarts A soft restart may periodically be performed automatically by the network clock to attempt to rectify a problem it may be experiencing A soft restart is essentially the same as performing a manual soft reset device as described above The ND clock will perform a soft restart under the following conditions e Ifthe clock is not receiving an NTP poll response or an NTP broadcast response depending on which mode the ND clock is in e Ifthe clock is set to use DHCP and no DHCP server can be found The timeout before doing a soft restart is no less than every 10 minutes Several factors can increase the time between these soft restarts e The soft restart will be delayed by two hours if a connection is made by telnet or a discovery by WinDiscovery e The soft restart is delayed if the user changes the default parameters for NTP poll retries timeouts or the NTP broadcast timeout For example if the NTP broadcast timeout is increased to 60 minutes the soft restart timeout will also be increased to 60 minutes ND Clocks User Manual Rev 2 0 1 Sep 08 23 Symmetricom Inc Telnet Terminal Configuration A terminal style configuration interface is available via Telnet To connect with the ND in this manner use any standard Telnet client application sp
17. 2 port are 9600 8 data bits no parity 1 stop bit None It may be necessary to restart the unit by recycling power to initiate the serial terminal configuration interface after the serial cable has been attached Once serial communications is initiated a banner will be displayed This banner message designates the clock model firmware version and IP address followed by a password entry The IP address may be announced as 0 0 0 0 This is normal operation The clock has not yet configured or been assigned its IP address under DHCP mode prior to announcing or making available its serial interface user menu You can reveal the IP address by refreshing the menu and announcement To reveal the IP address first enter the password Select the exit option X from the menu The initial clock announcement and the menu will re fresh and the actual IP address will be displayed if known Once connected press ENTER once to display the login menu screen Consult the section entitled Telnet Terminal Configuration for details on how to change configuration using the terminal interface ND Clocks User Manual Rev 2 0 1 Sep 08 29 Symmetricom Inc Troubleshooting Tips Important Note WinDiscovery uses bi directional UDP messaging on port 6163 for both the discovery process and to communicate configuration and status packets to and from the ND network clock s Delivery of UDP messages packets is not guaranteed If you experience intermittent prob
18. 216BE54 Model ND 2 Firmware 1 9 7 Network Configuration Ethemet 00 50 C2 16 BE 54 IP 10 0 100 138 Netmask 255 255 255 0 Gateway 10 0 100 5 DNS1 10 0 1005 DNS2 0 0 00 DHCP Yes Network Settings The network settings must be established for the clock to operate on the network You must be a network administrator or have their support to complete these functions Your network administrator determines the information for the Network Settings Network Configuration Demos Name ND 20050C216BESA Admirisiatiwe Huh f Aromatica obtain network configuration tom DHCP BOOTP IP address Netmask Gateway Pamay ONS Secondary DNS OK Cancel Note The default factory setting for network configuration is to use DHCP BOOTP Note If a DHCP server cannot be found on the network by the ND clock the IP address will be assigned a fallback IP address of 169 254 xxx xxx To utilize static IP addressing de select the checkbox for Automatically obtain network configuration from DHCP BOOTP You must enter the IP address Netmask Gateway Primary DNS and may enter a Secondary DNS Note The static IP address you enter must not be in use by another device on the network this includes IP address ranges reserved for use by the DHCP server If a static IP address is used which creates a ND Clocks User Manual Rev 2 0 1 Sep 08 11 Symmetricom Inc duplicate IP address condition the netwo
19. 26 Set NTP Unicast Multicast Broadcast Mode sese nennen nenne eere en enne s nano nro n e tres en terne een nnnns 26 Set NTP Client Parameters ot Ee Be TR aut uh EE RR Ere A E Re eere et 26 Configure Telnet Interface ont rere ec E OD RD s 26 Ping Via Device votre COR me ON Ee muse ENT 27 NIS M a a PM mL 27 Set Eime Zone Bias sss asec hs an aci 27 Set Daylight Saving Time Parameters crniiin iai E ER tee ee ere e se s e eda 27 Set Digital Display Intensity eese iz 27 Set Digital Display Type necessest iiie eren Hee uet neben de Ue de e PE ER HEAR RE Ne dU Reds 27 Set Digital Display Options cetus en ree ete eoe ne bee e d cu de e Poe t a E D TREE tas 27 Set Analog Clock Hourly Twice Daily Correction essere ener rr en rre en nennen 28 Soft Reset em ata ooi eect eye volti eod A RUN neha EORR P Ra PUR 28 Reset Config ratlon eee eee te vet eiie ai eee OI EP e ER Eres 28 Set stepper hand position analog clock en a dere Ede 28 Get Status stepper analog clock sees dades 28 Enable Disable User Control of Digital Display enne 28 R5 232 Terminal Configuration ene e eee did 29 Troubleshooting ir 30 ND Clocks User Manual Rev 2 0 1 Sep 08 Symmetricom Inc Specifications obs e Ete re e a tmm ep Rt ania 36 Physical ooo e om OD OR Oen aa e TIU Ie 36 Power Requirements oe t om aoo tutu eet 36 Communications Protocol 1 is 37 Communications I O ico ee deme io 37
20. 9 05 39 07 21 2008 To utilize the global password select the Global Password button on the main screen of WinDiscovery Note The global password information is saved in the registry and if enabled does not require the password to be entered during subsequent WinDiscovery sessions To maintain security for your system you may wish to disable the global password at the end of each session or only place WinDiscovery in a password protected user account or Administrator account which restricts access to the WinDiscovery application Note The global password being used must exactly match the existing password on all the devices being administered For example on any new system being installed the factory default password on all devices is public Therefore the global password must also be set to public To use a global password other than public the password for each device of the group must be changed using the Set Password command available on the right click menu of the item The global password does not overwrite the existing password for a device therefore any device with a different password cannot be administered ND Clocks User Manual Rev 2 2 1 Sep 08 40 Symmetricom Inc Enabling Global Password Global Password When enabled the global password is used For Windiscovery comunications with network devices Make sure all devices have the same password before enabling c ancel the glob
21. ND SERIES NETWORK TIME PROTOCOL CLOCK DATE DISPLAY Series IT USER MANUAL Y a Symmetricom CE Fe Santa Rosa CA 95403 Sep 08 Printed in USA DISCLAIMER The information contained in this document is subject to change without notice Symmetricom Inc hereinafter SYMMETRICOM makes no warranty of any kind with regard to this material including but not limited to the implied warranties of merchantability and fitness for a particular purpose SY MMETRICOM shall not be liable for errors contained here in or for incidental or consequential damages in connection with the furnishing performance or use of this material See important limited warranty at the end of this document Table Of Contents Introduction toas noite rita 1 Installationa and ee dad ao O cba tet ad de 2 Operating Environment adas 2 Pre Installation heeklist 35 85 e a ec O A ad 2 Static Networking Configuration c ccccccccccccccccesesesesenesssesesesesesesesesssesesessesesesessseseseseeescsesceceeseseseseneaesenensnseasseaeeeeeseeens 2 Dynamic Networking Configuration DHCP BOOTP o cccccccccccesssesesesesceeenseseseseseseseseseeeecseseseaeaeseeeeteneeseseeeees 2 NTP Addressing Mode 1 2 5 A ad as 2 Display Behavior eee i cca cade a tete ee vite ea ede e ten 4 Major Feature OVervlew xe ond RR dieti ei PER P cbe I eite ai i PERI cereis i el ss 5 DHCP BOOTP A to Configutration xci crt er e ri EE Er PES o E ESS 5 Device Name DHCP Name Regist
22. NTP reference The colons will flash until an NTP source is found The flashing colons are a ND Clocks User Manual Rev 2 0 1 Sep 08 3 Symmetricom Inc normal visual status indication alerting the user that the clock is not synchronized to the NTP server Note the ND series of clock displays are enabled with DHCP by default When configured to obtain network configuration through DHCP the display may hesitate on startup while DHCP is resolved At this time the clock can be communicated with over the local network using the WinDiscovery application WinDiscovery can find and identify clocks through the exchange of broadcast messages by using UDP broadcasts even when TCP IP networking parameters are not configured on the same network Note networks separated by physical routers will often block UDP broadcasts preventing WinDiscovery from locating devices on a remote network Under such circumstances WinDiscovery must be operated from a computer within the remote network or routers separating the networks must be configured to pass through both directions UDP broadcasts on port 6163 Once the clock has a valid network configuration and the IP address is known it can also be accessed via Telnet by computers in the same logical network In situations where providing basic network configuration via WinDiscovery application is not practical the clock can also be configured through an RS232 terminal interface To use this feature c
23. Router DHCP Option 03 o Primary and Secondary DNS Domain Name Server DHCP option 06 o Primary and Secondary NTP Servers Network Time Protocol Server DHCP Option 042 o Time Zone Offset Time Offset DHCP Option 02 Note not enabled by default e IPV4 SNTP NTP version 4 UDP port 123 default o Unicast Query default and broadcast multicast modes Telnet TCP port 23 default Control WinDiscovery protocol UDP port 6163 RS 232 ASCII 9600 baud 8 data bits one stop bit no parity UDP port 6165 RS 485 9600 baud 8 data bits one stop bit no parity UDP port 6166 Communications I O Ethernet IOmbps ier ee RJ45 10baseT Length of communication cable Cat5 5e 100 meters maximum RS 232 Programming Configuration Port DB9 male Length of communication cable ssssss 3 meters maximum use standard straight thru cable RS 485 Programming Configuration Port RJ11 Length of communication cable sssss 3 meters maximum use standard straight thru cable Power Requirements AC Input Voltage rias e ERR 100 240 VAC 10 90 264VAC 47 63 Hz AG Input Connector eerte rere Universal IEC input connector AC power consumption oocoooooccconocononnnonnnonnonnncnncco ener see table above for specific model s PrOfeCHOE i aa Built in fuse output power limiting ov
24. This can be changed as desired The ND clock can listen for NTP multicast broadcasts using the full class D group address range The ND clock does not restrict the use of the multicast address assignment and supports the full range of class D multicast addresses or groups from 224 0 0 0 to 239 255 255 255 These groups or class D address ranges for multicasting are defined and governed by RFC3171 JANA IPv4 Multicast Guidelines Typically the multicast address range 224 0 1 0 224 0 1 255 224 0 1 24 Internetwork Control Block is utilized for NTP traffic however please refer to the RFC3171 for your specific application and implementation Note While listening to NTP broadcasts multicasts the network clock cannot be configured to query the time server Note Some NTP SNTP clients will expect NTP servers to operate on port 123 and cannot be configured to utilize alternate ports The network clock can be configured to either listen to NTP multicast or broadcasts only or to query the NTP time server at a selected interval The default configuration is to query the NTP server at 10 minute intervals To configure the ND device to only listen to NTP broadcasts click the checkbox for Listen for NTP broadcasts only and enter a Broadcast timeout in minutes The default timeout is 60 minutes ND Clocks User Manual Rev 2 0 1 Sep 08 15 Symmetricom Inc Display Control The lower half of the window configures the time
25. ak G Tene thou C Tene 2440 C Date US C Date Furepean Displaying dashes when not synced w NTP server ND Clocks User Manual Rev 2 0 1 Sep 08 14 Symmetricom Inc The Broadcast Multicast timeout period in minutes is adjustable when this mode is selected Note While listening to NTP broadcasts the network clock cannot query the time server Note Some NTP SNTP clients will expect NTP servers to operate on port 123 and cannot be configured to utilize alternate ports Listen for NTP via Multicast Address The network clock can be set up to listen to NTP using multicast addressing by selecting the Listen for NTP via multicast address es checkbox NIP Clock Configuration Network Time Protocol NTP Display Snapshot Query NTP server for time n L Primary server 224011 Secondary server Time Zone Use NTP server s address provided by DHCP server i Multicast timeout 60 minutes Bn Savm UI Primary server 224 01 a y Telnet Option Secondary server 224 01 3 y Serial devices settings Listen for NTP via broadcast address 255 255 255 255 Broadcast timeout minutes Display Advanced Settings pd User Display Control Dim al Bright A Format Time 12 hour Time 24 hour C Date US C Date European When enabled the multicast class D group address may be specified as well as the frequency that multicast broadcasts will be issued
26. al password v Enable Global Password Enter Global Password p Enable the global password feature by selecting the Enable Global Password checkbox Enter the global password Select OK At this point the global password settings will be saved in the registry of the computer running WinDiscovery During this session and subsequent sessions of WinDiscovery you will not have to enter the password Disabling the Global Password Global Password when enabled the global password is used for Windiscovery comunications with network devices Make sure all devices have the same password before enabling CAM the global password Enable Global Password Enter Global Password se 77777 e Turn of the global password feature in WinDiscovery by deselecting the Enable Global Password checkbox e tis not necessary to delete the information from the global password field ND Clocks User Manual Rev 2 2 1 Sep 08 41 Symmetricom Inc Changing the Global Password Global Password When enabled the global password is used For Windiscovery comunications with network devices Make sure all devices have the same password before enabling CAS the global password Enable Global Password Enter Global Password llo e Disable the global password feature in WinDiscovery by deselecting the Enable Global Password checkbox e Use WinDiscovery to manually change the password for each device to
27. al use of this feature requires the clock to be removed from the network or for NTP server configuration to be left undefined Note for the purpose of maintaining its internal clock the network clock always assumes the time entered is UTC and saves this information as the internal UTC time Any configured time zone daylight time settings will then be applied to this internal time for the clock time display purposes ND Clocks User Manual Rev 2 0 1 Sep 08 21 Symmetricom Inc Status The Status window is a display only window that gives you the current information on the network clock s display and synchronization activity The status window shows a snapshot of the network clock display This status update is not precise but is meant to give you a view of the clock display for troubleshooting and maintenance purposes The Status also shows the active NTP server Primary or Secondary the current synchronization status and Time Adjustment information Time Adjustments may be caused by o loss of NTP o changing the NTP source or o changing Network Configuration settings o power loss or cycling The Ceiling Exceeded field describes the event where the time adjustment exceeded a value that will be set in the NTP Digital Clock Configuration Advanced Ceiling Note the statistics will reset if you change the NTP server Display Snapshot UTC ime 20 41 30 07 22 2008 Local tee 20 41 30 07 22 2008 Active server Prenx
28. ate no for the US Canada then you continue to configure the DST by entering the number of each option and completing the entries masks are provided for required format of data e DST and standard time bias hour with sign DST normal bias is 01 00 00 hour and standard time bias is normally 00 00 00 e DST start point can be set as absolute date i e 03 11 or floating day by entering Month such as 3 for March Day of week such as Sunday and week in Month 1 2 etc e DST end point can be set as absolute date or floating day Set Digital Display Intensity The digital clock display intensity is controlled with a scale of 1 to 14 with 14 being brightest Enter the value for the desired intensity setting Set Digital Display Type Allows configuration for time display 12 and 24 hour for 4 and 6 digit clocks or date display MM DD Y Y or DD MM Y Y for 6 digit clocks Set Digital Display Options The digital clock display special options may be adjusted This includes displaying dashes when an NTP timeserver is not present along with a delay function to display the dashes ND Clocks User Manual Rev 2 0 1 Sep 08 27 Symmetricom Inc Set Analog Clock Hourly Twice Daily Correction Note This menu item feature has been retained for backward compatibility with a discontinued model of analog clock with AC synchronous only This feature does not apply to the stepper motor analog clock or digital clocks Soft R
29. d The default password is public Problem Multiple error windows titled Bad Password continue to pop up each time a configuration setting is applied ND Clocks User Manual Rev 2 0 1 Sep 08 34 Symmetricom Inc Possible reasons solutions 1 2 E You have entered and remembered an incorrect password in the password windows This is now causing multiple error indication windows titled bad password to pop up for each portion of the configuration message that is being sent to the clock You must clear the memorized password using one of the two options below WinDiscovery only remembers the password for the current session close the WinDiscovery session and reopen All passwords will be forgotten by the WinDiscovery application As an alternative to closing the WinDiscovery session Right click on the device being administered in the main WinDiscovery window The right click pop up menu now contains an entry for Forget Memorized Password Select this option If using the global password feature the global password does not match the existing password of the device you are trying to manage Either change the device password to match that of the global password or change the global password to match that of the device s you are attempting to manage If these troubleshooting tips do not solve your problem contact customer service at support symmetricom com or call 888 367 7966 in the USA
30. ddress of 169 254 xxx xxx Problem Clock not maintaining its assigned IP address Problem Clock function is erratic Clock periodically resets itself Problem Clock is showing an Error field under the status window in WinDiscovery Possible reasons solutions 1 Incorrect network configuration may be causing the clock to receive a fallback IP address and or perform soft restarts Verify that the IP address configured for the clock is correct If you manually enter or DHCP assigns an IP address that already exists on the network this will create an IP address conflict The clock will reset its address fallback to one within the link local address space Determine the cause of fallback IP address and resolve issue View the error status field under the status window to help determine the cause of why the clock received a 169 254 xxx xxx Near the bottom of the Status window the error will be displayed If there is no error the text box will not be displayed Note Devices which have been assigned a fallback IP address of 169 254 xxx xxx will be displayed in the main WinDiscovery window with RED text indicating a problem with the configuration When the Ethernet interface is initialized the ND clock will verify that the IP address either static or assigned by DHCP is not being used by another device on the network If a conflict is found the ND clock will default to a 169 254 xxx xxx address The IP address that caused the error
31. default device names are the product name abbreviation followed by the last octet of the device s Ethernet address MAC address If a DHCP server is available on the network when the ND clock is installed the unit will be auto registered with the DHCP server The network system administrator can then view this DHCP name registration and the currently assigned IP address at the DHCP server The user or network system administrator may wish to designate device names relating to their own organizational requirements It is recommended that a robust naming scheme be developed before devices are installed to different locations within an organization ND Clocks User Manual Rev 2 0 1 Sep 08 5 Symmetricom Inc The device name may be changed from the factory default name by entering a unique name of up to 32 characters Hint You can change the device name to one convenient for your site preferably one that helps you to later identify the exact physical location of the device Up to 32 character device names are supported Note The IP address of the unit is required to configure the ND clock with Telnet Helpful Hint The DHCP server can be utilized to provide the IP address of the associated device name that is registered Time Zone Offsets All network clocks maintain time as UTC UTC is sometimes equated with or referred to as GMT internally A time zone offset or bias can be provided to adjust the time for display purpose
32. e West G 00 Medway Island Samos Static Networking Configuration IP address and netmask designation for device Primary and secondary DNS domain name servers Gateway router __ Primary and secondary NTP time sources ve fUS amp Caracal La Par Maraton New a La Paz Mara on Did ra 4 00 Mourtan Time US amp Canadal y Biss 00 00 00 H T Gigs is negative Dynamic Networking Configuration DHCP BOOTP Confirm that a DHCP BOOTP service is accessible on the local network __ Determine if DHCP server will provide NTP server configuration Determine if DHCP server will provide time zone configuration hiso ue time zone nbomation hare the DHCP veneer Ce NTP Addressing Mode Determine if the clock client will query the NTP server unicast mode listen for NTP broadcast messages broadcast mode or listen to NTP as part of a multicast group multicast mode All ND clocks can be provided with a verbose name The name is arbitrary and may be useful for organizing and managing devices once installed at a facility By default device names are the product name abbreviation followed by the device s Ethernet MAC address Customers may wish to designate names relating to their own organizational requirements It is recommended that a robust naming scheme be developed before devices are installed to different locations within an organization ND Clocks User Manual Rev 2 0 1 Sep 08 2 Symmetric
33. ecifying the IP address of the clock as the server with which to connect The factory default port is well known telnet server port 23 Configuration via Telnet may not be convenient for devices operating with a factory default configuration since the IP address is not known Use the WinDiscovery application or the RS 232 interface to establish first time networking configuration Helpful Hint If a DHCP server is available on the network The DHCP server can be utilized to provide the IP address of the associated device name that is registered The following sections provide basic descriptions of using the Telnet interface of the network clock Please refer to the previous Using WinDiscovery sections for additional details and important operational information regarding the special features and modes of the network clock Note for security purposes the Telnet interface can be disabled When disabled you will no longer be able to access the device with Telnet To re enable the Telnet feature one of the other configuration methods must be used or the clock must be reset to factory default configuration If you are not familiar with the Telnet application ask your network system administrator for assistance To initiate a Telnet session in Windows select the Run Command Line interface from the Start menu and enter the command telnet followed by a space and then the IP address of the unit Type the name of a program Folder docu
34. elnet the checkbox must be cleared using WinDiscovery or the unit must be RESET to factory default ND Clocks User Manual Rev 2 0 1 Sep 08 18 Symmetricom Inc Advanced Settings The Advanced button allows for the adjustment of additional network communication settings Under most typical operating circumstances it is not necessary nor is it suggested to change the advanced settings options Requer neos ribrecond 2000 Query rterval seconds 600 Retaram sequest interval milliseconds Request retry maaan attempts Delay between ververne conmachon stengt idliiecondi Connection sthempts belore ging up owtching savers 5000 z 10000 Radost eodeni imaa encore Maimam secaptabie ima chinga n seconds Deal accept 0 Lx wea Hint If the advanced settings have been altered for your clock and you begin experiencing difficulty in getting your clock to synchronize to the NTP time server or the clock begins acting erratically such as performing soft restarts try returning the advanced settings to the default values shown above User Display Control advanced feature The User Display Control button allows for the enabling and utilization of an additional special user mode control This special operational mode bypasses the display of time obtained from the NTP server and places user controlled alphanumeric characters on the display Under most typical operating circumstances it is not necessary nor is it su
35. er WinDiscovery Set Time Allows UTC time and date to be set directly into the clock This is useful in situation where NTP server synchronization is not available but reasonably correct time date is desired on the display When the ND has access to NTP servers information obtained via NTP will automatically overwrite any manually established time date Therefore practical use of this feature requires the clock to be removed from the network or for NTP server configuration to be left undefined Set Time Zone Bias The Time Zone Bias indicates the offset from UTC Enter the time in HH MM SS format as indicated including the plus or minus sign to indicate positive or negative bias Remember that this field can also be set from DHCP so check with your Network Administrator if you are getting inexplicable results Set Daylight Saving Time Parameters The DST configuration allows you to completely configure the DST summer hour settings for your location To configure the DST enter Y to Perform Daylights Savings Time Adjustments For sites requiring US Canada standard DST you can indicate yes to the next question and the DST will be configured for you automatically The new US Canada standard adopted in the spring of 2007 is 1 one hour positive bias starting at 2 00am on the second Sunday in March and ending at 2 00am on the first Sunday in November If you select the US Canada standard the configuration is complete If you indic
36. er during queries or the broadcast timeout has been exceeded If the Advanced Settings have been altered you may return them to there default values See Advanced Settings section of WinDiscovery Problem Clock display is frozen and is blank has strange characters or the time is not incrementing Possible Reasons solutions 1 The clock display may have been set using the User Control mode Disable the user control mode and restore the clock to normal operation mode Problem When using the serial port interface for configuration during initial power up or after a reset the clock announces its IP address as My IP address is 0 0 0 0 Possible Reasons solutions 1 This is normal operation The clock has not yet configured or been assigned its IP address under DHCP mode prior to announcing or making available its serial interface user menu You can reveal the IP address by refreshing the menu and announcement To reveal the IP address first enter the password Select the exit option X from the menu The initial clock announcement and the menu will re fresh and the actual IP address will be displayed if known Problem You have lost your password Possible reasons solutions 1 The password cannot be recovered if it is lost Reset the clock to the factory default configuration using the procedure described in the Configuration section After the clock has been reset to factory defaults the unit must be reconfigure
37. er voltage and short circuit protection A A Caution there are no user serviceable parts inside the ND display Please contact the factory if you require servicing or repair Power Over Ethernet Voltage eee per IEEE802 3af PoE standard 48VDC on spare pins 4 amp 5 Return on spare pins 7 amp 8 48VDC amp data on pins 1 amp 2 Return amp data on pins 3 amp 6 Power Consumption essere 12 95 W Class 0 device see table above Balli aiii see table above Operating Storage Temperature amp Humidity e Operating Temperature rs 0 to 50 C Relative Humidity nia Up to 90 non condensing 25 C e Storage Temperature siii 40 to 70 C e Relative Humidity gists apdexeserdsaaeuacaieceseerepaneies Up to 90 non condensing 25 C ND Clocks User Manual Rev 2 0 1 Sep 08 37 Symmetricom Inc Compliance FC Models ND 2 and ND 4 AC and POE versions This equipment has been tested and found to comply with the radiated and line conducted limits for a Class B digital device These limits are designed to provide reasonable protection against harmful interference in a commercial residential installation This device complies with part 15 of the FCC Rules Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operatio
38. eset The network clock may be restarted with a soft reset command to allow the device to clear its current communications buffer and re initialize its processing includes re requesting of a DHCP address This feature is intended to allow the user to remotely attempt to clear issues with the unit This feature does not restore the unit to its factory default state This command is essentially equivalent to the right click menu item Reset Device under WinDiscovery and the automatic soft restart built into the clock Reset Configuration The network clock may be reset from telnet Use this command sparingly as it will reset the unit to initialize and utilize DHCP IP addressing mode by default and will likely change the IP address of the unit making the communication via telnet impossible until the new IP address of the unit is configured or known If this command fails to clear an issue with the clock a hard reset may be in order to return the unit to its factory default state In certain rare instances it may become necessary to access the configuration reset switch to return the network clock to its factory default settings or to recover from a non responsive condition Consult the section Reset Factory Default Configuration under the Configuration section of this manual Set stepper hand position analog clock Note this menu items applies to analog stepper motor models only Get Status stepper analog clock Provides
39. esult of Symmetricom s breach of its one year Limited Warranty for defects in materials and workmanship or otherwise in connection with any claim respecting the product shall be limited to the repair or replacement of the product or a refund of the sales price of the product In no event shall the Buyer be entitled to recover consequential damages or any other damages of any kind or description whatsoever Proprietary Notice THIS DOCUMENT WHETHER PATENTABLE OR NON PATENTABLE SUBJECT MATTER EMBODIES PROPRIETARY AND CONFIDENTIAL INFORMATION IT MAY NOT BE REPRODUCED USED OR DISCLOSED TO OTHERS FOR ANY PURPOSE EXCEPT THAT FOR WHICH IT IS PURCHASED OR LOANED ND Clocks User Manual Rev 2 2 1 Sep 08 39 Symmetricom Inc Appendix A WinDiscovery Global Password Feature A significant feature has been added to WinDiscovery V2 6 0 and greater which allows for the use of global passwords Prior to the implementation of a global password feature a password was required to be entered for each device being administered during a WinDiscovery session With the global password feature enabled a single password may be entered once during an initial session All devices with that password may then be administered without entering the password for each device The global password information is saved in the registry of the computer running WinDiscovery lt Symmetricom Inc Network Device Discovery Known devices Exit Global Password 0
40. et LAN Verify that all network cables hubs etc are in proper working order Be sure that Ethernet crossover patch cables are not being used where inappropriate Problem Clock is not displaying the correct local time or date ND Clocks User Manual Rev 2 0 1 Sep 08 32 Symmetricom Inc Problem Clock did not properly negotiate the Daylight Savings Time to standard time or vice versa transition Possible reasons solutions 1 Time zone offset has been configured incorrectly Provide the correct time zone configuration 2 Daylight savings time has been configured incorrectly This is configured separately from the time zone configuration Provide the correct daylight time configuration by either manually entering the daylight saving time rules or selecting the single button configuration under WinDiscovery If using the convenient single button configuration for US Canada or EU DST be certain to use the latest version of WinDiscovery and apply it for each clock The latest version of WinDiscovery will have the latest DST rules for the US Canada and EU implemented Or you may enter the DST rules manually If using the Current Windows Setting button to apply the DST rules verify that the rules on the computer are correct 3 If using DHCP BOOTP for network configuration consult with your network system administrator to see if the optional Time Zone option has been changed This option as provided by DHCP can override manual setti
41. ggested to enable or utilize these settings OK Send to this clock only furicert Broadcast to ell clocks broadcast Display Digts Below Display Digts Below Nom Daplay Nosal Display The ability to set the digis to user Cusen dese selected value mait be enabled on HE 3 4 5 s each clock with ther button before beng uted the test tme Chck the baton below lo enabled at n Ges tosse Disable User Control of Display Digk W Tun Colora On Tun decimal pori on ND Clocks User Manual Rev 2 0 1 Sep 08 19 Symmetricom Inc Set Password The third option on the clock configuration pull down menu allows you to set a password for each individual device The password must be entered twice to confirm the entry The password is a maximum of 11 characters and a minimum of character and is case sensitive Click the OK button to save the password or cancel to discard the change Warning If the password is lost the user must reset the clock using the Reset button on the rear of the clock This will cause the clock to return all configuration to factory default settings Set Password Old password New password New password confirm Warning consult your product manual for information on the ramifications of setting then forgetting an appliance s password Change Password Cancel When a password is set for a clock each time you click OK or Apply for that clock you will be asked for the password You may
42. gt Set Date Time lt K gt Get Status stepper analog clock lt B gt Set time zone bias XL Enable Disable User Control of digital display lt 8 Exit session Enter the Number or Alpha Letter corresponding to the command desired and press the enter key Current configuration or default answers are displayed in brackets Depressing the Enter will retain the current entry default Get Status Info Select this menu option to query the device for parameters relating to the clock s current status This includes information regarding the clocks reference to UTC local time displayed time whether it is synchronized and its NTP server Set Device Name To set the device name select this menu option Enter the desired device name Set Reset Password To set change or remove the password select this option Bear in mind that a lost forgotten password cannot be recovered unless a reset to factory default settings 1s performed Note the factory default password is public Hint To remove password protection for a clock select the Set Password command You will be prompted to enter the old password Enter the old password Do not enter anything into the New Password or Confirm Password fields Click OK to save Upon you next session you will not be prompted for a password for the clock ND Clocks User Manual Rev 2 0 1 Sep 08 25 Symmetricom Inc Set IP Configuration To set the IP Configuration select this menu
43. guration window Time Zone Configuration Select a time zone description from the list box or configure a custom bias with the edit controls The edit controls represent the current configuration of the device Note daylight savings time is not configured here GMT 06 00 Saskatchewan GMT 06 00 Guadalajara Mexico City Monterrey New GMT 06 00 Guadalajara Mexico City Monterrey Old GMT 06 00 Central America GMT 06 00 Central Time US amp Canada GMT 05 00 Eastern Time US amp Canada GMT 05 00 Indiana E ast GMT 05 00 Bogota Lima Quito Rio Branco GMT 04 00 Santiago GMT 04 00 Atlantic Time Canada Bias 06 00 00 IV Bias is negative Also use time zone information from the DHCP server Cancel ND Clocks User Manual Rev 2 0 1 Sep 08 16 Symmetricom Inc Daylight Saving Time Settings The Daylight Saving Time button also included in the right half of the window give the clock complete flexibility to display any time zone and DST combination First select the time zone by clicking the Time Zone button as described above Next click the Daylight Savings Time button to configure the Daylight Savings Time if appropriate You may use either of the following options are available for setting the DST rules manually enter the daylight saving time rules select the convenient preset DST rules for US Canada Standard button select the convenient preset DST rules for EU Standard
44. he Telnet button adjusts Telnet configuration If Telnet is allowed the port must be defined The default Telnet port is 23 See your network administrator if you need additional information NIP Clock Advanced Configuration x T dom Telnet conta ation Toret por 23 UK Carcel ND Clocks User Manual Rev 2 0 1 Sep 08 17 Symmetricom Inc Serial Port Option Parameters future expansion The ND clock contains both an RS232 and RS485 serial port These ports are auxiliary ports may be used in conjunction with future supported serial port devices A Serial devices settings button is included for setting up the RS232 or RS485 serial port communications These ports are automatically configured as disabled by default at the factory for standard operation Note it is not necessary to enable configuration purposes The serial network clock the serial port interface to utilize the serial port for port interface will operate by default for configuration of the Serial devices settings Serial Port Configuration Port EEES Data bits Baud rate 1200 2400 4800 9600 RS232 e 8 19200 Parity C 38400 None Odd Even C 57600 Stop bit s e 1 e Attached Devices Note This will disable the serial terminal port Cancel Note Enabling serial port attached devices by selecting the checkbox will disable the serial port Telnet interface To re enable the serial port T
45. his mode is selected exclusively when neither the listen for NTP broadcast nor the listen for NTP multicast modes are selected Netwodk Time Protocol NTP Display napahot Query NTP server tee time Use NIP server s address provided by DHCP server Prrmary server 16 010026 Secondary server l 7 Usten for NTP via muticost addrezi i Closs D 224229 TeeZowe F Mulicadt timeout frire Primary server TDs Telnet Option Secondary server Se al device settings F Laster for NTP vis broadest address 255 255 265 265 Advanced Settings Broadcast timeout jnne Dispi User Display Control Om Bight Format E Imelo C Tene 24 hoxa C Dae US C Due Euopem Displaying dashes when not synced w NTP server WV Enable digiwing dashes Listen for NTP broadcasts The network clock can configured to listen to NTP broadcasts by selecting the Listen for NTP via broadcast address 255 255 255 255 checkbox Network Time Protocol NTP Display Snapshot Que NTP serves fec time Primary carver 100103 Y Listen for NTP via multicast address Class D 224223 x x Time Zone R Use NTE i Muissa timeout rrirntes A Tra Seccrday server z Serial devices setting IV Listen for NTP via broadest address 255 255 255 255 Advanced Seringe Brandenst timeout eo miratos Display User Display Control Om rn Form
46. ies is not water or moisture proof and is designed for indoor use only Treat it as you would any other delicate electronic device and do not expose it to water excessive heat or physical abuse See the Specifications section for details on the environmental operational conditions Pre Installation Checklist Before installing an ND one should be prepared with the following basic configuration information that the device will require It may be necessary to obtain some or all of this information from a network administrator in your organization Quy NIP ervey lon mm vt MIP verc aimes genii by CHCP mcm ERE Parar erm 5 Secondary see Device Name Luton for NTP v macat added Cis D 226 290 x mo Zone vm NTP smod bienes modd by OHCP vmm Adminitrative Hub a na SRP Lag Seng Tn P Tehet Option Audomaboally cbian network conigaabon hom DHCP BDOTP iecore mem Later o NTP v bosia adde CIS ZD ZDT IP acess Dr em Netmatk TE c M e Dugi Cort Gateway Ned fee leo Tene 2E hour Primary DNS Dev Owe Euwe Secondary DNS Puiuredste stem quand AIP caver 2 ratio deciaeng dae N han to mat deire decay imha DA D dvd and enm OK Cancel Select a ne zona descnphon hom the kt box or confiere custom bass wth the edi controls The edi contro regemert the cument configuration of the device Note daylight ravings tme not configured here mM T1 2 OD international Date Lin
47. lems with WinDiscovery try closing the current session and restart the application If this does not resolve the issue try the following trouble shooting tips or switch to an alternate method of configuration such as telnet Problem Unable to find discover the clock on the network with WinDiscovery Possible reasons solutions 1 The discovery process was not complete before selecting clock s After selecting Discover button wait until the discovery status indicates 100 completion 2 Verify that the clock is on the same physical network as the computer from which you are running WinDiscovery If the computer is separated from the clock by a router on a remote network or a firewall it is likely that the router firewall is blocking communication with the device Run WinDiscovery from a computer within the remote network or ask a network system administrator to configure the router firewall in question to pass through both directions UDP broadcasts on port 6163 Note If this does not resolve the detection problems you may additionally configure to pass through both directions UDP broadcasts on ports 6165 6166 and 6264 3 Verify that the hub router switch is capable of supporting the 10MB speed that the attached network clock requires 4 Verify that a DHCP BOOTP server is present on the network If the clock has been configured to use DHCP for network configuration but no DHCP BOOTP server is present the clock may not resp
48. ment or Internet resource and Windows will open it for you Open telnet 10 0 100 139 v Upon entering the network clock via Telnet the initial screen is shown below The clock displays its firmware version its name Ethernet address IP address and the IP address of the PC with which you are accessing it A login prompt is presented if a password has been configured for the device The configuration menu will be displayed when the correct password has been provided ND Clocks User Manual Rev 2 0 1 Sep 08 24 Symmetricom Inc Telnet 10 0 100 139 D 2 h w 1 2 version 1 9 rev 7 opyright lt c 2082 2888 Symmetricom Inc 1 y name is ND 2 88058C216BE5fR y ethernet address is 08 58 c2 16 be 5a P y IP address is 18 8 108 139 y Serial Number is 88198818 ello user at 10 0 100 181 Commands 1 lt i gt Get status info lt C gt Set daylight savings time 2 Set device name lt D gt Set digital disp intensity X3 Set reset password XE Set digital disp type lt 4 gt Set IP configuration lt F gt Set digital disp options lt 5 gt Set NIP server parameters lt G gt Set analog clock hourly or 6 Set NTP Unicast Multicast Broadcast twice daily correction gt Set NTP client parameters lt H gt Soft Reset lt 8 gt Configure telnet interface I gt Reset Configuration 9 Ping via device lt J gt Set hand pos stepper analog clock lt A
49. mp switches and other network devices which support the Internet Group Management Protocol IGMP In addition the IGMP mode must be enabled and configured for multicasting addressing to be implemented properly Please ensure ND Clocks User Manual Rev 2 0 1 Sep 08 7 Symmetricom Inc that your network system components are capable of and configured properly for IGMP before utilizing the multicast addressing feature Consult you IT network administrator for assistance in utilizing the multicast addressing feature Note You will need to check with your firewall vendor to determine how to enable multicast traffic through a firewall In addition you may want to read RFC 2588 IP Multicast and Firewalls Anycast The network clock does not currently provide anycast capability Configuration The network clock ships from the factory with most software configuration offset options in the OFF setting in order to display UTC time This factory default configuration is defined as DHCP BootP provided network configuration Enabled DHCP provided NTP server address entry Enabled Query Unicast NTP client Enabled Time zone offset Disabled Automatic Daylight Saving Time Adjustment Disabled Telnet access Enabled Display dashes when not synchronized to an NTP time server after 24 hrs default Enabled Q Qoo 0O 0 Oo O9 Reset Factory Default Configuration In some situations such as a lost password it may be
50. n CE Models ND 2 and ND 4 AC and POE versions Electromagnetic Compatibility 89 336 EEC 92 31 EC 93 68 EEC 2004 108 EC Tested and Conforms to the following EMC standards EN61000 3 2 2000 Harmonic Current Emission EN61000 3 3 1995 A1 2001 Voltage Fluctuations amp Flicker EN61000 4 2 2000 3 4 5 6 8 11 ElectroStatic Discharge RF Immunity Fast Transient CM Surge RF Injection CM Power Frequency Magnetic Field Voltage Dips EN61000 6 3 2001 EMC Emissions Generic Commercial EN55022 1998 A1 2000 A2 2003 CISPR22 Low voltage directive 2006 95 EC Tested and Conforms to the following Safety standards EN60950 1 2001 Safety of Information Technology Equipment Waste Electrical and Electronic Equipment Directive WEEE 2002 95 EC The ND models are considered WEEE Category 9 Monitoring and Control Instruments Equipment as defined by the WEEE Directive and therefore fall within the scope of the WEEE Directive For more information about Symmetricom s WEEE compliance and recycle program please visit the Symmetricom WEEE RoHS website at http www Symmetricom com rohs htm RoHS COMPLIANT by EXEMPTION Restriction of the Use of Certain Hazardous Substances Directive 2002 95 EC The RoHS directive covers the same scope of electrical and electronic equipment that are under the WEEE directive except that Category 8 Medical Devices and Category 9 Monitoring and Control Instr
51. next session you will not be prompted for a password for the clock Helpful Hint Use the global password feature to avoid entering and remembering individual passwords during each WinDiscovery session See the appendix for additional information Set Time The Set Time right click menu item is a special advanced feature designed to allow the user to manually set the time and date for the clock for use in the absence of an NTP time server Important Note DO NOT use this method for network clocks that will have access to an NTP time server This clock will self adjust to the UTC time reference provided by the NTP time server plus any Time Zone and DST offset settings that have been configured To configure the time displayed on the face of the clock refer to the previous sections for configuring the IP address NTP time server s Time Zone and DST settings The time can either be set to the time of the PC running WinDiscovery or a manual time and date may be entered The function may be most useful for lab situations as the clocks keep time via their internal precision oscillator when NTP is not present Set Time Date C UTC Time from PC clock Time Date Custom 12 30 15 4 1 2004 E Note the time date you are providing shall be treated as UTC referenced Cancel Note When the network clock has access to NTP servers information obtained via NTP will overwrite any manually established time date Practic
52. ngs 4 If you have used the Set Time function note that the clock assumes that you have entered UTC and will apply your Time Zone and DST configuration relative to the manually entered time 5 The NTP time server s is not available or the NTP server being used has the incorrect UTC time Verify the NTP time server is available and is providing the correct UTC time Problem Clock display appears to freeze momentarily Problem Clock appears to reset periodically Possible Reasons solutions 1 If DHCP is enabled Note DHCP is enabled by default and a DHCP server is not active on the local network the clock will hesitate periodically while attempting to resolve DHCP configuration To correct the problem switch to manual networking configuration or determine why the local DHCP server is not operating 2 Ifthe clock cannot resolve its DHCP address in DHCP mode the unit will periodically perform a soft restart to re initialize its communication port and DHCP configuration See the trouble shooting section on fallback IP address 3 Ifthe clock has not been configured with at least one valid DNS server or that DNS server is down hesitations similar to those described in 1 will occur At least one valid DNS server is required for operation 4 If the clock does not have at least one valid NTP server address configured primary NTP server or the server is unreachable for extended periods the clock will periodically perform a soft reset
53. om Inc AC Versions AC models of the ND clock are supplied with an IEC power cord o Insert the standard Cat 5 or Cat 6 network cable into the RJ45 connector on the rear of the unit o Insert the AC power cord into the IEC connector on the rear of the unit POE Versions Power Over Ethernet POE models will require an IEEE 802 3af compliant POE injector or switch with 48VDC output on spare pairs of the network cable conductor 4 amp 5 with corresponding 48 VDC returns on pins 7 amp 8 or by sharing the data pins and their returns o Insert the standard Cat 5 or Cat 6 network cable into the RJ45 connector on the rear of the unit o The other end of this network cable must be connected to an IEEE 802 3af compliant PSE Power Sourcing Equipment with 48VDC o This single network cable will carry both data and power Maximum distance is 100m 328ft Important Note the ND clock with an installed POE Power Over Ethernet option will obtain its power directly from a POE powered source using the spare wires of a standard network cable with RJ45 connector for input power The POE source must be a fully compliant IEEE 802 3af PSE operating at 48VDC POE sources not IEEE 802 3af compliant might damage the clock and void the warranty After application of power the network clock will go through an internal self test Time from the real time clock backup will then be displayed until the clock is configured to find an
54. om the CD Note if you have your Windows OS configured to autorun applications from a CD when installed this process will be automatic 3 By default the setup utility will suggest installing files to C Program Files Symmetricom WinDiscovery Another path may be selected if desired Using WinDiscovery Open the WD program by clicking the shortcut on your desktop or other fashion dictated by your installation Only one user should be using WD at a time and other methods should not be used to manage the network clocks while using WD Symmetricom Inc Network Device Discovery Known devices Discover 14 05 33 06 28 2007 Click the Discover button on the lower left of the screen All ND clocks accessible on the network will announce their presence The real time status bar will display the count of devices found When complete a list of device families and groups will be displayed in the left pane of the WD window ND network clocks are digital time display members of the Symmetricom Inc NTP Clocks family Click on the plus sign to the left of any family or group to open and view device types that were found ND Clocks User Manual Rev 2 0 1 Sep 08 9 Symmetricom Inc Symmetricom Inc Network Device Discovery Known devices zE Symmetricom Inc NTP Clocks ND 2 ND 4 Device Group ND 4 Global Password 09 47 59 07 21 2008 Clicking on any device gro
55. ond to discovery requests for up to twenty seconds after power on Note DHCP configuration is enabled as a factory default In addition the clock will reset its address fallback to one within the link local address space 169 254 xxx xxx when no DHCP server is present or is not able to be reached Reset the clock to initiate a new DHCP IP address request or use static IP address mode Consult your network system administrator to ensure that a DHCP server is present and accessible on your network and or to obtain a list range of available IP addresses Verify that the clock and the computer running WinDiscovery are attached to the network 6 Verify that all network cables hubs etc are in proper working order Be sure that Ethernet crossover cables are not being used where inappropriate CA Problem Clock was found using WinDiscovery but the status display is intermittent or not updating and or clock does not appear to be responding to configuration changes under the current WinDiscovery session Problem Clock s previously found during a recent session of WinDiscovery do not show up during the current session Problem The clock status or settings displayed under WinDiscovery show garbled characters Possible reasons solutions ND Clocks User Manual Rev 2 0 1 Sep 08 30 Symmetricom Inc 1 The WinDiscovery application has been open for too long and the clock configuration s has have changed For example this can occur if the
56. onnect an RS232 terminal or PC serial port to the DB 9 connector on the rear of the clock with a straight through 9 pin cable Use the communication settings 8 N 1 none Once connected press ENTER once to display the login menu screen Display Behavior The colons of the clock display will flash once per second when the device is unable to obtain time from an NTP source If this condition persists for 24 hours by default then dashes will be displayed When NTP time is available and valid the colons will remain steady on Normal preferred operation is a display with the colons steady on indicating that the clock is synchronized Note The flashing colons and or dashes are a normal visual status indication alerting the user that the clock is not synchronized to the NTP server PM Indicator If the ND is configured for a 12 hour time display mode an LED indicator will appear in the bottom right corner of the display during the PM hours ND Clocks User Manual Rev 2 0 1 Sep 08 4 Symmetricom Inc Major Feature Overview The network clocks can be configured using one of the following e WinDiscovery software application provided with your clock e Telnet once IP address is known or configured e RS 232 terminal style interface such as Windows HyperTerminal application Consult the section entitled Configuration for details on how to adjust settings through the aforementioned mediums DHCP BOOTP Auto Configuration DHCP
57. or Secondary Source Problem Colons are continuously flashing once per second Problem Status in WinDiscovery says Unsynchronized Possible reasons solutions l CA Verify that the NTP server s specified are reachable communicating and are not flagging their reported time as invalid Use a PC based SNTP client application to verify the server s 1f necessary Verify that a gateway router firewall has been configured that allows the clock to communicate outside of its local network Verify that the IP address configured for the clock is correct If you manually enter or DHCP assigns an IP address that already exists on the network this will create an IP address conflict The clock will reset its address fallback to one within the link local address space 169 254 xxx xxx If you see that the IP address starts with 169 254 obtain a new IP address for the clock or resolve the duplication Consult your IT Network Administrator for a list range of available IP addresses to avoid IP address conflicts If using DHCP mode consult your IT Network Administrator to ensure that your DHCP server is configured to automatically supply the NTP server address before selecting the Use NTP server s address provided by DHCP server checkbox If the DHCP server cannot automatically supply the NTP server address es then deselect this option and enter the NTP server s address es manually Verify that the clock is connected to the Ethern
58. or open ended broadcast of NTP packets whereby data is sent to every possible receiver client multicasting is useful because it conserves bandwidth It does this by replicating packets only as needed within the network to send them only to receivers clients that want them thereby not transmitting unnecessary packets The concept of a group and group membership is crucial to multicasting Every multicast requires a multicast group the sender or source transmits to the group address and only members of the group can receive the multicast data A group is defined by a Class D address The network clock does not restrict the use of the multicast address assignment and supports the full range of class D multicast addresses or groups from 224 0 0 0 to 239 255 255 255 These groups or class D address ranges for multicasting are defined and governed by RFC3171 JANA IPv4 Multicast Guidelines Typically the multicast address range 224 0 1 0 224 0 1 255 224 0 1 24 Internetwork Control Block is utilized for NTP traffic however please refer to the RFC3171 for your specific application and implementation The Internet Group Management Protocol IGMP is a protocol that controls group membership for individual hosts This protocol only operates in a LAN setting but is required if you wish to be able to join a multicast group on a host IGMP is defined in RFC 2236 Note Use of the multicast addressing method requires the use of routers a
59. our with PM indicator time e 24 hour time hh mm ss e MM DD YY date DD MM YY date Worldwide Time Zone Name Power Up Hons e Worldwide Automatic DST Part numbers ND 2 AC model 2 3 Characters 820 1442 AC Rackmount 2RU POE model 820 1442 POE ND 4 AC model 820 1444 AC 4 Characters Wallmount POE model Please refer to the Specifications section of this document for 820 1444 POE additional details regarding each model and available options The ND clock line includes the WinDiscovery Windows based network management software as well as a telnet interface for configuration and maintenance Other features include Time zone offsets to one second resolution support any biasing requirements Complete flexibility in daylight savings time configurations Real time clock backup retains time during loss of power and or NTP Primary and secondary NTP source with fault tolerant switching Supports NTP broadcast multicast and query unicast modes Fully configurable network settings including DHCP BOOTP support Security features include password protection of configuration encrypted communication and the ability to disable telnet management access Selectable Display formats Adjustable brightness e Status display to remotely view clock display through WinDiscovery application ND Clocks User Manual Rev 2 0 1 Sep 08 1 Symmetricom Inc Installation Operating Environment The ND ser
60. primary and secondary server information can automatically be configured by the DHCP server when selecting the Use NTP server s address provided by DHCP server provided your DHCP server is configured to do so Consult your IT Network Administrator to utilize this option Network Tine Protocol NTP Display Snapcher IV Query NTP server for time fV Use NIP servers address peoveted by DHCP serves Prmary teet 10 0 100 26 Secondary tarve 3 B PF Listen for NTP vis mulicait addvers r Class D 224229 x x x Tene Zone zj Datt Saving T Mukicast tect mirutes a m oos M Telnet Option Secondary server Se al devices settings 7 Unter lox NTP via broadest address 255 255 255 265 Advanced Settings Broadcast tect mextes Owota User Display Control Den Baga Format Tene l2hoe C Tene 24h C Date US C Due European Displaying dashes when not synced w NTP server Enable dupla dae 2s Hours to wat before ciplayeng dashes 0240 PN ND Clocks User Manual Rev 2 0 1 Sep 08 13 Symmetricom Inc The default well known port for NTP service is 123 This can be changed as desired using the Telnet application Note some NTP SNTP servers will expect NTP clients to operate on port 123 and cannot be configured to utilize alternate ports Query NTP server for time Unicast Mode for NTP By default the ND clock will operate only in Unicast Query mode using server port 123 T
61. rati iii RERO NET rie OE EP RUNE aE A ae 5 Time Zone Offsets m pa A hss bub obe thle sich Whe bets EE 6 Daylight Saving Time x i senate ei E RD A oet ter I ETAT a 6 NEP Addressing Modes s t as Raa EA Sen e de RE Lv te RS ette reser eo 7 Unicast QUY aie EO RE RO RS HES Bi Sn rise tU TH ATE na 7 Broad Cast EE 7 MulticaSticiai a AS DAS gdh as RA GSS ASK E R E 7 ANY CAS ici 8 Configuration s sto a hee eR se ee o I e e eG 8 Reset Factory Default Configuration ie Ie dG ROR A me e VR oh ERA TUR d e tete Pase Pe Corea 8 Default Password titi etel equ aan ire Ns Re RR IAM RUM UT IM UI EU MET 8 Configuration Methods ener e e e Eure ter Sons MEI As Qe teet tep Ute Fa ME RUN een eed 9 MERIDIE QM IEEE 9 Using WinDISsCOVery z iue eso Reed telle ae nate ORE ente Tie E CREDI vede dates 9 Propettles A o ERE cte Mee la tere RO EE Pt cu iene 11 Network Settings ii a Pan poh RENE vui tee Ner Wann sates iae ce eh 11 Device Settin gsited sera EE eae o do 13 SetsPass word DAA EE EEA it ha ek eR EUM I EM LI T LA rV I PUR TA Aa abe E T 20 Set bin yo sce tert Nene RE 21 Slats ence GUI A D mei be tUe A A Rees Menard ae ee nee ea iets 22 Telnet Terminal Confieuration rte A ee a pa ME ene 24 Get STATUS Info x ek se sess ao a A A i 25 Set Device NM LP 25 SeUReset PassWord ion nt ai acer 25 Set IP Confreuralion RT bmc me dem ue te RN 26 Set NTP Server Parameters mt eet REPE er RU Te UR UD De x utes a
62. rk clock will be re assigned a fallback IP address of 169 254 xxx xxx 169 254 xxx xxx IP fallback address DHCP is enabled by default If DHCP is enabled and no DHCP server can be found the ND clock will default to a 169 254 xxx xxx address In addition if an IP address conflict is determined when the Ethernet interface is initialized either DHCP or static the ND clock will default to a 169 254 xxx xxx address This 169 254 xxx xxx is a link local address range i e not allowed on the internet and is used by Microsoft when their DHCP clients cannot find a DHCP server To determine the cause of why the clock fell back to a 169 254 xxx xxx address the user should display the status of the clock Please see the Status section for details as to how to determine the cause of the fallback IP address Note Devices which have been assigned a fallback IP address of 169 254 xxx xxx will be displayed in the main WinDiscovery window with RED text indicating a problem with the configuration gt 5ymmetricom Inc Network Device Discovery Known devices Spteseinconm Inc NTP Clocks Nane ND 2 005CC2T EBE SA ND 2 0050 2168 SA ND4 ND 40050C 216BE 57 Doare ta Global Passant Xscovering network devices found 2 devices 05 complete 09 53 14 07 21 2008 Device Name Each clock is programmed at the factory with a factory device name This name includes the model name and a MAC address extension
63. s A bias can be set as a positive or negative value with a resolution of one second Note Factory default Time Zone Offset configuration for displaying local time is disabled You must enable and configure the settings to display local time Note It is highly suggested to utilize an NTP time server with UTC reference and configuring the offsetting for your time zone and DST in your local time display clock Daylight Saving Time A daylight savings time summer time adjustment can be configured separately and in addition to a time zone offset Network time displays provide flexible configuration options supporting most world daylight time standards Daylight time standards vary widely throughout the world Traditional daylight summer time is configured as one 1 hour positive bias The new US Canada DST standard adopted in the spring of 2007 is one 1 hour positive bias starting at 2 00am on the second Sunday in March and ending at 2 00am on the first Sunday in November In the European Union daylight change times are defined relative to the UTC time of day instead of local time of day as in U S European customers please carefully consult the section entitled Device Settings for details on setting daylight time To ensure proper hands free year around operation the automatic daylight time adjustments must be configured using the daylight time option and not with the time zone offset option Note Factory default
64. the new desired global password by using the Set Password command Available under the right click menu for each device Properties Network Configuration Device Settings Set Time Date is Status Reset Device e Enter the new password information and select the Change Password button Set Password Old password Ez New password aaa eR New password confirm Warning consult your product manual for information on the ramifications of setting then forgetting an appliance s password Change Password Cancel e Repeat for each device in the group that is to use the global password ND Clocks User Manual Rev 2 2 1 Sep 08 42 Symmetricom Inc Global Password When enabled the global password is used For Windiscovery comunications with network devices Make sure all devices have the same password before enabling the global password v Enable Global Password Enter Global Password k TEM e Re enable the global password featur by selecting the Enable Global Password checkbox e Enter the new global password ND Clocks User Manual Rev 2 2 1 Sep 08 43 Symmetricom Inc
65. uments which are under WEEE are excluded from the RoHS directive The time display products Models ND 2 and ND 4 AC and POE versions fall under the category of Monitoring and Control Instruments Equipment Category 9 as defined in Annex 1A of WEEE 2002 96 EC Directive which is excluded from the RoHS directive 2002 95 EC reference Article 2 paragraph 1 requirements These products are manufactured using lead in the soldering process as allowed for items excluded from the RoHS directive These units are RoHS Compliant only in that they are excluded from the RoHS directive under Category 9 Monitoring and Control Instruments ND Clocks User Manual Rev 2 2 1 Sep 08 38 Symmetricom Inc Limited Warranty Each new product manufactured by Symmetricom is warranted for defects in material or workmanship for a period of one year from date of shipment Limited Warranty Defects in material or workmanship found within that period will be replaced or repaired at Symmetricom s option without charge for material or labor provided the customer returns the equipment freight prepaid to the Symmetricom factory under this limited warranty Symmetricom will return the repaired equipment freight prepaid to the customer s facility Limitation of Liability By purchasing any product from Symmetricom the Buyer consents to and agrees that the Buyer s sole and exclusive remedy for any damages or losses incurred by the Buyer as a r
66. up will list in the right pane of the WD window all devices of that type found Only the devices shown in the right window can be managed To configure another device group click on the device name in the left window and the device names will then appear in the right window ready to be managed To configure and manage a device shown in the right window double click or right click the device name and a menu appears The choices are Properties Network Settings Device Settings Set Password Set Time Status Reset Device Symmetricom Ine Frown devices ynmeticon inc NIP Cocks ND2 ND 266 NDA NO4 lt 080C S Decover Ent Network Device Discovery Device Procertes Network Configuration Device Settings Set Password Sot Teal Haus Reset Device Global Pataword Clicking a menu choice opens a new window for that function When working in the management windows use the Apply and OK button to accept changes that you have made Use the Cancel button to exit the screen without applying changes NOTE Cancel does not undo changes that have been saved using the Apply button The following sections provide detailed information regarding the right click menu options ND Clocks User Manual Rev 2 0 1 Sep 08 10 Symmetricom Inc Properties The network configuration may be viewed in a summary form under the Properties selection Symmetricom Inc NTP Clocks ES Name ND 2 0050C
67. y NTP status Synchronaed Lost tene aduitmert 20 34 53 07 22 2008 UTC Lasgest time adjustment 10 milliecondi Aven sg lena adttmert 1 mlleecond Lera renes 0 Face mode Digia Note statistics are reset when NTP chant conhigaration is changed Troubleshooting Tip In addition to the standard status indications the network clock will display a special error indicator under the status window if either a DHCP server cannot be located or if the device has an IP address conflict due to either DHCP or Static IP addressing Under these conditions the unit will also be assigned a fallback IP address of 169 254 xxx xxx and appear in RED text under the main WinDiscovery window To determine the cause of why the clock received a 169 254 xxx xxx address the user should display the status of the clock Near the bottom of the Status window the error will be displayed If there is no error the error text field will not be displayed Error P address conflict 10 0 100 158 Error No DHCP Server found Note statistics are reset when NTP client configuration is changed Note statistics are reset when NTP client configuration is changed ND Clocks User Manual Rev 2 0 1 Sep 08 22 Symmetricom Inc Reset Device The network clock may be reset with a soft reset to allow the device to clear its current communications buffer and re initialize its processing includes re requesting of a DHCP address This feature is intended to allow the

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