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Symmetricom XLi IEEE 1588 Verifying the Site, Mounting the GPS Antenna

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16 XLi IEEE 1588 Clock

997-01510-03, Rev. C, 12/12/2006

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Blocked signals and multipath cancellation significantly increase GPS acquisition time. Multipath

cancellation is caused by reflected signals that reach the antenna out of phase with the direct signal.

Multipath cancellation and blocked signals are typically caused by vertical reflective objects positioned to

the side and above the antenna. To solve these problems, mast mount the antenna at least 1 meter

away from and above the reflecting surface.

Verifying the Site

Verify that the length of cable from the GPS antenna site to the XLi does not exceed the maximum GPS

antenna lengths recommended to meet the GPS signal strength requirements. When calculating the

total antenna cable length, include cable that is needed to meet safety and regulatory requirements,

such as lightning arrestors and building code requirements for running coaxial cable from the exterior to

the interior of a building.

If possible, test the GPS signal reception of a particular site before mounting the antenna and running

the cable indoors. Some sites may turn out to be unsuitable due to interference.

Notes:

• The XLi requires a 12-volt compatible antenna. Antennas not rated for 12 V will be damaged.

• Use a splitter, not a BNC “T” connector, when connecting an antenna to multiple receivers.

• The L1 GPS antenna is designed to operate with up to 150 ft. (45.72 m) of RG-59 coax cable.

•A line amplifier is available for cable runs between 150 - 300 ft. (46 - 91 m) in length (RG-59).

•A down-converter kit is available for cable runs of 1,500 ft. (457.2 m) in length (RG-58).

Mounting the GPS Antenna

Mount the GPS antenna on an antenna mast (recommended) or on the peak of a building. For the mast,

use 2-inch (5.08-cm) diameter PVC pipe or conduit that is rigid enough to withstand high winds without

flexing. Use guy wires to stabilize masts longer than 10 ft. (3.048 m). Avoid mounting the antenna on a

tower, which requires a specialist to maintain.

Contents

Main Notices Table of Contents 1: Overview and Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2: System Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3: Installation and Set-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4: User Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 5: Function Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35 Page 9: XLi-Generated Messages 137 A: Using F100 Configuration 141 B: Upgrading System Firmware 145 C: SNMP 151 E: Time Code Formats 189 Page 1: Overview and Features Overview Description Standard Configuration 1588-Related Specifications IEEE 1588 card Page GPS C/A Receiver (87-8028-2) Standard TCVCXO Oscillator Standard 110 VAC Power Supply Clock Architecture Figure 1: Functional Timing Block Diagram Figure 2: Interface Architecture Block Diagram 2: System Specifications Mechanical/Environmental AC Power Supply System Time & Frequency Accuracy GPS Receiver Chassis Aux Ref Input Note: Standard Inputs and Outputs Serial I/O Port Note: NET Network Port J1 Input Time Interval - Event Time Note: Note: Note: J2 Output Rate Out J3 Input Auxiliary Reference Auxiliary Reference (Aux Ref): See F113 J3 Input Configuration (Aux Ref) on page104. 1 PPS Pulse Per Second Output CODE Time Code Output Certifications 3: Installation and Set-up Installing the GPS Antenna Selecting a GPS Antenna Site Verifying the Site Mounting the GPS Antenna Page Note: Making Additional Connections and Powering Up Warning: Configuring Network Settings Configuring the XLi Configuring the IEEE 1588 Card(s) Note: PTP Mas ter Note: PTP Sla ve Note: Rack Mounting the XLi Page Page 4: User Interfaces Alarm Status LED 200:21:24:09 Keypad/Display Interface Time Display Status Display Menu Display Keypad Operation Keypad Examples The following examples show how to use the keypad effectively. To open a function using ENTER: Other ways to abandon new settings in a function: To open a function using MENU: To change the settings in a function, and not save them: Command Line Interface Logging In Logging Out Changing Username and Password Session Timeout and Priority Web Interface User Privileges Sessions User Names and Passwords Logging In Navigating Submitting Changes Logging Out Notes Page 5: Function Reference Function Summary Page Page F1 Time Zone Offset F2 12/24 Hour Format Note: F3 Time & Date Page F4 Serial Port Configuration Note: F5 Time-Quality Setup Page Note: F6 Keypad Lock F8 - Continuous Time Once-per-Second The Format of the F8 Output String While Synchronizing to a Reference Source After Loosing a Reference Source F9 - Time On Request F11 - Time Output Format Note: F13 Time Error F18 Software Version Request F27 FTM III Configuration F42 Multicode Output Configuration F44 N.8 Frequency Synthesizer F50 GPS Receiver LLA/XYZ Position Page F51 GPS Antenna Cable Delay Page F52 Distribution Cable Delay F53 GPS Operation Mode Page F60 GPS Receiver Satellite List XLi responds with approximately 32 lines that use the following format: For example, to display the complete GPS satellite list, enter: XLi responds: Similarly, to display a list of the current or tracked satellites, enter: Or F66 Daylight Saving Time (DST) Mode Page F69 Time Mode Page F71 Oscillator Statistics F72 Fault Status F73 Alarm Control / Status Page Page Page Page Page Note: Page F74 Clock Source Control F90 Code Output Configuration Page F100 Network Port Configuration & XLi Firmware Page F100 EA Ethernet Address F100 IP IP Address Note: F100 SM Subnet Mask Note: F100 G Gateway Note: F100 IC Network Port Settings F100 BASET 10/100 BASE- T F100 L/LOCK/UNLOCK Remote Lockout Warning: F100 L Remote Lockout F100 ST Self Test Status F100 BH Burn Host F100 BUB Burn BootLoader F100 BU Burn F100 BF Burn File System F100 BUFP Burn FPGA Firmware F100 CONFIG Configure NTP & SNMP Note: F100 J Factory Mode Jumper Warning: F100 K I L L Reboot F100 P Change User Password F100 PI PING F100 PN Change User Name F108 Oscillator Configuration F110 J1 Input (TIET) Note: Page Or For example, enter: The XLi responds (example): F111 J2 Output (Rate) Page F113 J3 Input Configuration (Aux Ref) Page F116 Display Brightness Level Note: F117 Factory Configuration F118 Option Board Configuration For a summary of all the option bays, exclude bay number (B<N>) from the command and enter: F119 GPS Receiver Configuration Note: Page Page F120 - N.1 Frequency Synthesizer F123 Have Quick Input/1 PPS Sync Configuration F126 Options Key Entry F128 Have Quick Output F130 - Precision Time Protocol Status Note: PTP CLOCK ID - GPS To obtain the status of the PTP card, send a command using the following format: For example, enter: The XLi responds (example): If this option card is a PTP SLAVE, the following information will be provided: Page F131 - Precision Time Protocol Network Config Note: Option bay location of the IEEE 1588 cards Static IP address, subnet mask and default gateway for the network port DHCP enabled/disabled Note: DHCP-assigned IP address, subnet mask and default gateway for the network port PTP Sync message interval PTP burst mode enabled/disabled PTP network port enabled/disabled PTP subdomain same Reset PTP settings to factory defaults PTP initialize to user entered values PTP Master or Slave (PRI/SEC/STBY) PTP Slave Synchronization Threshold PTP Preferred Master Configuration Keypad (plus factory defaults and settings) Page Page Request a summary of the PTP card configuration Set Internet Configuration settings Set the IP Address Set the Subnet Mask Set the Default Gateway Setting the Internet Configuration Note: Enable/Disable DHCP Get PTP Protocol settings Request the PTP Subdomain Name Set the PTP Subdomain Name Reset the PTP Parameters to the Factory Default settings Initialize the PTP Protocol to User-entered Values Configuring the PTP Reference Clock Settings Note: Request the PTP Slave Synchronization Threshold Set the PTP Slave Synchronization Threshold Note: Request the PTP Preferred Master Clock Configuration Enable or Disable the PTP Preferred Master Clock Configuration Request PTP Network Parameter Status Page Page 9: XLi-Generated Messages Error Messages Page Informational Messages Page A: Using F100 Configuration Configuring SNMP Parameters Overview of Steps Set up the FTP Server Get the IP Address of the FTP Server/Workstation Copy the Configuration Files to the FTP Server Note: Edit the Configuration Files Note: Move the Configuration Files Back to the XLi Page B: Upgrading System Firmware Caution: Overview of Procedure Note: Set up the FTP Server Upgrade the Firmware Do the same for the firmware (.bin) file: For example: Then enter: Then do the same for the file system (.fs) file: Trou ble sho ot ing Message: >Can't set the burn host - wrong IP address Message: >Can't open file: 192-####.## Message: >Wrong File type Message: Unit hangs on Burning Boot message. FAQ How does one check the units firmware version number? Page C: SNMP SymmetricomTtm-SMIv2.mib Page Page Page Page Page Page Page Page Page xliMainCard-SMIv2.mib Page Page Page xli-SMIv2.mib xliSystem-SMIv2.mib Page Page Page Page Page Page Page Page Page Page Editing snmp.conf SNMP Private Enterprise MIB Structure SNMP Addressing New Top Level Structure of Enterprise MIB for XLi Additional Products Additional Option Cards Page The XLi Fault Group Page XLi Traps Future Expansion Glossary of SNMP-Related Terms Configuring and Testing SNMP Materials Needed HP OpenView Configuration Note: Page XLi Configuration Tes t P roc ed ur e Page Page E: Time Code Formats Overview IRIG Introduction IRIG Code Format NASA 36 Introduction NASA 36 Code Format Page Page Page Page Page H: Sales and Customer Assistance Page Page Page Index