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Symmetricom XL-GPS GPS Receiver User Manual

1. ELCOME TO SYMMETRICOM NETWORK INTERFACE SER NAME operator ASSWORD ETWORK INTERFACE 192 8001 c 1998 2003 SYMMETRICOM RIGHTS RESERVED OGIN SUCCESSFUL Ud AS HPZ V 100 ic 100 IP 192 168 46 150 SM 255 255 255 0 G 192 168 46 1 Fh I gt NOTICE UTILITY MONITOR SESSION HAS TAKEN PRIORITY FROM THIS TELNET SESSION gt f100 ic NOTICE CANNOT RESPOND TO COMMAND BECAUSE UTILITY PORT SESSION 997 01530 01 Rev C 25 Jan 2008 HAS PRIORITY 31 5 Function Reference Function Summary The following summary lists all the XL GPS functions identifies the user interfaces from which each one is available and provides a brief description of the function Available from K keypad N Network Port Telnet S Serial Port Function Available Description From F1 Time Zone Offset K N S Set the time offset for Standard and Local time F2 12 24 Hour Format K N S Apply a 12 or 24 hour format to the Front Panel Display to F8 F9 and F90 F3 Time amp Date K N S Setthe time and date when not already provided by a reference source F4 Serial Port Configuration K N Configure the main serial port settings F5 Time Quality Setup K N S Setthe thresholds for each of the four time quality flags F6 Keypad Lock K N S Lock keypad access to the XL GPS s functions Wh
2. I RIGHTS RESERVED LASH FILE SYSTE OUNTED SOURCE FILE config symmetricom conf BYTES READ 1210 FILE SYSTE REV 4 1 80 SCAN FOR OPT CARD BEGINS FOUND ADDR 30004000H ID NUM 87H SCAN FOR OPT CARD ENDS INSTALL SMART OPTIONS BEGINS FOUND GPS CARD QTY 1 ID 8028 2H INSTALL SMART OPTIONS ENDS QUERYING FOR SYMM e H RICOM DEVICE PLEASE WAIT 997 01530 01 Rev C 25 Jan 2008 89 SYMMETRICOM GPS DEVICE XL GPS INITIALIZATION SUCCESSFULLY COMPLETED gt F100 P Change User Password Use function F100 P to change a user password In a network port session F100 P changes the password of the user you logged in as operator or guest In a serial port session F100 P changes the password of the operator user See Command Line Interface on page 29 Valid password size is from no characters to 64 characters If more than 64 characters are entered F100 P truncates the string to 64 characters When selecting a password use appropriate levels password security for the XL GPS s operating environment Examples include e Mixing random alpha and numeric characters Avoiding words or word combinations that can be found in a dictionary To change the user password enter F100 lt S gt P lt CR gt where F ASCII char
3. arm arm arm arm DatalpAddr 0 IpAddress DataTimeStamp 0 DataCode 0 Integer DataDescriptorstr 0 997 01530 01 Rev C 25 Jan 2008 D Network Time Protocol NTP As an option Symmetricom can factory configure the XL GPS to function as a Stratum 1 network time server Network time servers use Network Time Protocol NTP to synchronize computer clocks across a network Alternatively customers can upgrade a XL GPS unit in the field by purchasing the NTS option and installing a key to enable it Support for version 4 0 of the NTP RFC 1305 as well as the Simple Network Time Protocol SNTP RFC2030 is available In addition the XL GPS responds to TIME protocol requests RFC868 The Network Time Server responds to time synchronization requests from hosts using these User Datagram Protocol Internet Protocols UDP IP Type Protocol Port Number RFC NTP ver 4 0 UDP Port 123 RFC1305 SNTP UDP Port 123 RFC2030 TIME UDP Port 37 RFC868 NTP Packet Transmitted Timestamp Accuracy 10 milliseconds Editing ntp conf Note The XL GPS is a Stratum 1 NTP server Therefore it does not support NTP peering in which a time server gets time information by sending an NTP query to another time server Entering valid IP addresses for the server parameters e g server 216 210 169 40 in ntp conf does not enable peering in the XL GPS The current text of ntp conf is as follows XL GPS NTP CONF L
4. PING REMOTE HOST NOT FOUND lt CR gt lt LF gt F100 PN Change User Name Use function F100 PN to change a user name In a network port session F100 PN changes the name of the user you logged in as operator or guest In a serial port session F100 PN changes the name of the operator user See Command Line Interface on page 29 To change the user name enter F100 lt S gt PN lt CR gt 997 01530 01 Rev C 25 Jan 2008 91 where F ASCII character F 100 unit function number lt S gt space PN specify User Name command CR inputline terminator XL GPS responds ENTER NEW USER NAME When you enter a new user name XL GPS responds CONFIRM NEW USER NAME Enter the same new user name again to confirm the spelling If the same new user name has been entered twice XL GPS responds OK lt CR gt lt LF gt In this case the new user name will be used for the next login using the command line interface However if the new user name is entered differently the second time XL GPS responds ERROR USER NAMES DO NOT MATCH NEW USERNAME REJECTED lt CR gt lt LF gt In this case the old user name will be used for the next login using the command line interface If you have forgotten the operator or guest user name and or password use Bootloader Mode to change them In Bootloader Mode log in using the default user names
5. OK lt CR gt lt LF gt 997 01530 01 Rev C 25 Jan 2008 71 Use the SUPPRESS command to suppress all F73 faults from triggering alarms for a specified duration after the XL GPS power is turned on To check the SUPPRESS status enter F 73 lt SP gt SUPPRESS lt CR gt The XL GPS responds in the following format F73 lt SP gt POWER ON lt SEP gt MINOR lt SEP gt ALARM lt SEP gt SUPPRESS lt SEP gt lt seconds gt lt CR gt lt LF gt where F ASCII character F 23 function number seconds seconds from 0 to 86400 SP ASCII space character SEP one or more space characters either comma space or tab CR Carriage Return lt LF gt Line Feed To set the SUPPRESS enter a command using the following format F73 lt SP gt SUPPRESS lt SEP gt lt seconds gt lt CR gt The seconds can be set to any value from 0 to 86400 The XL GPS responds OK lt CR gt lt LF gt F90 Code Output Configuration Use function F90 to select AM or DC modulation of the IRIG B time code on the following outputs the CODE output on the Main CPU card e the J1 through J3 outputs on the Expansion Module The factory configuration for F90 is IRIG B AM Note For the Expansion Module the IRIG B modulation type is controlled by a hardware jumper setting and by F90 The four JP2 Output Header jumpers located on the Expansion Module individually set the modulation types on J1 J2 J3 and J4
6. 30 nS RMS Frequency Output Accuracy 1x 101 1 day Frequency Timing Allan 1x10 Q 1 sec Deviation Stability 3 x 10 40 sec 3x 10 100 sec 2 x 1071 1000 sec 1x10 1 day AM Code Output Accuracy 10 uS DC Level Shift Code Output 1 uS to the 1 PPS Accuracy 997 01530 01 Rev C 25 Jan 2008 AC Power Supply Input Input connector IEC 320 type Input voltage range Universal 90 260 VAC 110 300 VDC Input frequency range 47 Hz 63 Hz Standard I O The following specifications apply to the connectors on the Main CPU card RS 232 RS 422 Interface The standard serial data port is a bi directional EIA standard RS 232C interface The serial data port is configurable via the Keypad and Network Port Interface RS 232 RS 422 Data Rates 1200 2400 4800 9600 and 19200 bps Data Bits 70r8 Parity even odd or none for Data Bits 8 even or odd for Data Bits 7 Stop Bits 10r2 Connector Male 9 pin D subminiature Pin Assignment 1 N C 6 Rx RS 422 7 Rx RS 422 8 Tx RS 422 9 Tx RS 422 Factory settings for RS 232 9600 N 8 1 4 997 01530 01 Rev C 25 Jan 2008 Network Port 10 100 The Ethernet port interface is Type Frame format J1 Optional TVET Standard RJ 45 8 pin connector 10 Base T and 100 Base T standards IEEE 802 3 The TI ET configuration is via the Keypad Serial I O and Network port J1 accepts an external 1 PPS or Event input signal
7. 80 997 01530 01 Rev C 25 Jan 2008 where F ASCII character F 100 unit function number lt S gt space LOCK specify LOCK command CR input line terminator For example enter F100 LOCK lt CR gt To users on the serial port XL GPS responds OK lt CR gt lt LF gt Or to users on the network port XL GPS gives the following response and then closes the port GOODBYE lt CR gt lt LF gt To unlock remote lockout use the command line interface on the serial port to enter F100 UNLOCK lt CR gt Or use the keypad s F100 F100 L Remote Lockout Status Command Line Only Not available in keypad Use function F100 L to display the status of the remote lock For more information see F100 LOCK above To view the lock setting for remote access enter F100 L lt CR gt where F ASCII character F 100 unitfunction number lt S gt space L specify L command CR input line terminator 997 01530 01 Rev C 25 Jan 2008 81 XL GPS responds F100 L LOCKED lt CR gt lt LF gt or F100 L UNLOCKED lt CR gt lt LF gt F100 ST Self Test Status Use function F100 ST to display whether the Self Test Status parameters passed or failed The parameters include flash memory checksum test nonvolatile NV RAM Serial Port and version check To query the self test status enter F100 lt S gt ST lt CR gt where F ASCII character F 100 unitfunction number lt S gt space
8. GPS satellite The current position of the receiver The UTC leap second offset Following power up and initialization the receiver requires at least four concurrent good current satellites to resolve its current position In rare cases when a pair of good current satellites are on intersecting paths the receiver requires additional good current satellites or waits for the intersecting satellites to diverge before resolving the current position Once resolved the current position information is saved For additional information on GPS position information see F50 GPS Receiver LLA XYZ Position on page 49 While resolving its current position the GPS receiver also listens for the UTC leap second offset periodically transmitted by GPS satellites along with GPS time and position information Up to thirteen minutes may elapse from the time the receiver acquires its first good current satellite to the time it receives the UTC leap second offset Once received the UTC leap second offset is saved When the receiver has the current position the UTC leap second value and the current GPS time it starts providing valid time to the XL GPS system clock When the system clock is locked to the GPS time reference and is operating within specifications the system status is locked The interval from initialization to system status lock is typically under twenty minutes under nominal conditions This transition is illu
9. TRAP YES enables NO disables SNMP traps for a particular community ACCESS Read and write privileges to members of a community R sets read only privileges and W sets read and write privileges IP Provide the IP address of the SNMP management stations within that community These addresses are required in order for the management station to receive SNMP traps and to communicate with the XL GPS system using SNMP Note A special address of 255 255 255 255 grants any IP addressed unit access to the Enterprise MIB variables SNMP Private Enterprise MIB Structure This section describes the top level structure amp design of the XL GPS SNMP Private Enterprise MIB SNMP Addressing SNMP addressing is structured as a very large tree database A root node address is an integer value that ranges from 0 to some very large number Conceptually there are no limits to the numbers of sub nodes either SNMP addressing is written in doted decimal notation For example the address of Symmetricom s ntplnPkts Enterprise MIB variable is 1 3 6 1 4 1 1896 6 1 2 1 1 0 The address fragment 1 3 6 1 4 1 is fixed by the IANA Internet Assigned Number Authority and is the address of the SNMP Private Enterprise MIB s The 1896 is the address assigned by IANA to Symmetricom for our Enterprise MIB s Symmetricom assigns the addresses after that at our discretion and design New Top Level Structure of Enterprise MIB for XL GPS The former address s
10. 100 config snmp set host lt IP Address dir lt subdir gt lt CR gt To move the NTP and SNMP config files back onto the XL GPS type gt 100 config ntp snmp set host lt IP Address dir lt subdir gt Here s an example of a successful SNMP and NTP config file transfer gt gt f100 config set ntp snmp host 192 168 0 1 dir Host config ip 192 168 0 1 already configured Are you sure y N y Source file snmp conf bytes read 1275 Dest file Source file ntp conf bytes read 1166 Dest file etc ntp conf bytes written 1166 Source file ntp keys bytes read 44 config snmp conf bytes written 1275 Dest file etc ntp keys bytes written 44 Configuration files transferred successfully Resetting After XL GPS receives the configuration files it reboots and goes through the normal startup process F100 J Factory Mode Jumper Use function F100 J command to test the state of the factory mode jumper A value of 1 means the jumper is installed and a value of 0 means the jumper is not The factory mode jumper can be identified because it is the only three prong jumper on the Main CPU card and is labelled J3 Units are shipped to the customer with no jumper installed The jumper is used by Symmetricom technicians to test and configure the unit With this jumper installed the operation and integrity of the XL GPS are compromised Warning Do not run the XL GPS with the jumper unless specifically directed to
11. H Host ip configured successfully 113 HP OpenView Configuration 131 l IC 79 Informational Messages 113 Installation Configuration 13 installations 143 IP 76 IP Address 76 IRIG B 73 J J 88 J1 Input Time Code 93 J2 Output Rate 96 J3 Auxiliary Reference Input 6 J3 Input Aux Ref 100 148 997 01530 01 Rev C 25 May 2008 K KILL89 Keypad Examples 27 Operation 27 Keypad Lock 41 Keypad Display Interface 25 L L 81 Latitude Longitude and Altitude 49 LED 25 Alarm Status 25 LLA XYZ Position 49 Lock Keypad 41 LOCK UNLOCK 80 Logging In 29 Logging out 30 M MD5 136 Measure Frequency Input 100 Menu Display 26 Messages Informational 113 XL GPS Generated 111 MIB Structure 124 Mounting the GPS Antenna 13 N Network Configuring 16 Network Port Connecting to 19 Connecting to 19 Network Port amp XL GPS Software 74 Network Port Settings 79 NOTICE Cannot respond to command because Utility Port session has priority 113 NTP 9 135 Configure 87 Configure Parameters 114 ntp conf editing 135 O OK 113 Operator Login 29 Options 8 Expansion Module 87 8034 8 997 01530 01 Rev C 25 Jan 2008 149 NTP 9 Options Key Entry 108 order status 143 order status and scheduling 143 Oscillator Statistics 62 Oscillator Configuration 93 P P 90 Part Names 142 Password 29 Change 90 Changing 30 PI91 PING 91 Position 49 Power Supply 16 PPO 96 Private Enterprise MIB Structure 124
12. The modulation is AM when the jumper is set to AM regardless of the software setting in F90 If the jumper is set to DC F90 can be used set the output to either AM or DC In other words the F90 setting applies to all outputs unless the jumper setting is AM 72 997 01530 01 Rev C 25 Jan 2008 Although the factory configuration outputs UTC time in 24 hour format the following can be used to modify the code output of F90 for non standard applications F2 12 24 Hour Format on page 35 selects between a 12 or 24 hour time format F69 Time Mode on page 61 selects between the following timescales Local Standard GPS UTC and TAI Command Line To display the current settings enter F90 CR XL GPS responds using the following format F90 lt S gt IRIG B lt S gt lt TYPE gt lt CR gt where F ASCII character F 90 function number lt S gt Space IRIG B ASCII string indicating that the time code output is IRIG B lt TYPE gt AM DC lt CR gt carriage return character LE line feed character For example enter F90 CR XL GPS responds example F90 IRIG B AM lt CR gt lt LF gt To change the Code Output to DC enter F90 IRIG B DC lt CR gt To change the Code Output back to AM enter F90 IRIG B DC lt CR gt XL GPS responds OK lt CR gt lt LF gt 997 01530 01 Rev C 25 Jan 2008 73 F100 Network Port Configuration Y XL GPS Firmware F100 provides two grou
13. operator and guest and passwords See Using the Command Line Interface on page 18 Then use F100 PN and F100P to set the new user names and passwords Once this has been completed reboot the unit and log in using the new username or password See F100 P Change User Password on page 90 Bootloader Mode To enter Bootloader Mode when resetting a forgotten user name F100 PN or password F100 P Reboot the XL GPS using the F100 K L L Reboot command e Immediately press the MENU key on the keypad and hold down while the XL GPS is rebooting The XL GPS will display will hang while displaying BOOTING After a few moments release the MENU key Open a command line session with the XL GPS Use the F100 PN or F100 P commands as needed and then reboot the XL GPS again 92 997 01530 01 Rev C 25 Jan 2008 F108 Oscillator Configuration Use function F108 to display the type of oscillator being used TCXO a OCXO For oscillator specifications see Oscillators on page 11 Command Line The oscillator type is defined by the hardware configuration of the clock and is not configurable through the command line or keypad user interfaces To request the oscillator configuration enter F108 lt S gt lt CR gt XL GPS responds F108 lt S gt OSCILLATOR lt S gt CONFIG lt S gt lt OSC gt lt CR gt lt LF gt where F ASCII character F 108 Function number lt S gt ASCII space character one o
14. systemFaultConfigMasks group contains masks for each possible system alarm event When the status changes for example if the primary GPS becomes unlocked the associated mask is checked Only if the mask is enabled will a system alarm be generated The systemFaultHistory group contains latched status indicators for each of the system alarm events If a system alarm event goes into fault status even if this status is transient then the associated entry in the systemFaultHistory group will maintain a record of that fault occurrence until the latch is cleared using the configDataLatchClear object resetting all systemFaultHistory entries The XL GPS System Status Group xliSystem 1 systemFault systemStatus 1 2 systemStatus system Status General Detail 1 2 statusClockCurrent 1 statusPliSynthesizer 1 gt statusClockSource 2 statusLpnPIl 2 statusDescriptorStr 3 statusPrimaryGPS 3 statusSecondaryGPS 4 statusIRIG 5 statusAuxRef 6 statusPrimaryPower 7 statusSecondaryPower 8 statusRbOsc statusTimeErrorThreshold 10 statusClockLockStatus 11 statusOscillatorTuning 12 Note For the figures in this chapter substitute xlgps for xli The XL GPS systemStatus group is used to provide a current operational view of the system The systemStatusGeneralGroup gives on overview of the system status including the status of the clock and the re
15. the file Notepad WordPad Microsoft Word and Vim don t seem to have this problem The configuration files are automatically transferred to from the FTP server in binary format They retain the DOS or UNIX file conventions of the editor XL GPS works with either format Move the Configuration Files Back to the XL GPS Heboot Warning The following steps cause the XL GPS to reboot Using the XL GPS s command line enter one of the commands below replacing IP Adaress with the IP address of your workstation FTP server To move the NTP config files type gt 100 config ntp set host IP Address dir lt subdir gt To move the SNMP config file type gt 100 config snmp set host IP Address dir lt subdir gt To move the NTP and SNMP config files type gt 100 config ntp snmp set host IP Address dir lt subdir gt Here s an example of a successful SNMP and NTP config file transfer gt gt f100 config set ntp snmp host 192 168 0 1 dir Host config ip 192 168 0 1 already configured Are you sure y N y Source file snmp conf bytes read 1275 Dest file config snmp conf bytes written 1275 Source file ntp conf bytes read 1166 Dest file etc ntp conf bytes written 1166 Source file ntp keys bytes read 44 Dest file etc ntp keys bytes written 44 Configuration files transferred successfully 116 997 01530 01 Rev C 25 Jan 2008 Resetting If you get Error Can t open source file verify tha
16. time to enter DST in 24 hour format lt SEP gt one or more separator characters either space comma or tab characters For output strings this will be a single space character lt INWEEK gt which week to enter DST 1 2 3 4 or O for last lt INDAY gt day of week to enter DST 1 through 7 where Sunday is 1 lt INMONTH gt month to enter DST 1 through 12 where 1 is January lt OUTHOUR gt hour to exit DST in 24 hour format lt OUTWEEK gt which week to exit DST 1 2 3 4 or O for last lt OUTDAY gt day in to exit DST 1 through 7 where Sunday is 1 lt OUTMONTH gt month to exit DST 1 through 12 where 1 is January lt CR gt carriage return character lt LF gt line feed character For example enter F66 MANUAL 02 1 1 04 02 0 1 10 Meaning Manual settings are in effect The entry time is 02 a m week 1 first day 1 Sunday month 4 April The exit time is 02 a m week 0 last day 1 Sunday month 10 October To leave the value of any item unchanged insert a semicolon in its place For example to change the week DST begins enter F66 MANUAL 0 lt CR gt F66 responds to all changes with OK lt CR gt lt LF gt Meaning that Local time will enter DST on the last week of the month All other parameters remain unchanged The XL GPS automatically reboots when the user changes the DST entry exit times in F66 If any of the items in an input string
17. 2 are the key identifiers e M specifies MD5 authentication the only type available symmetricom and TTXL GPS are the arbitrarily chosen keys The first column is the key identification number which may range in whole positive numbers from 1 to 65 535 The second column is the type of key which is always set to the letter M when using MD5 authentication The third column is the private key that is ASCII text from 1 to 32 characters in length Up to eight MD5 can be established Editing MD5 keys on the NTP Client For NTP client authentication the line trustedkey 1 2 in the ntp conf file is required to enable the private keys 1 and 2 from the ntp keys file The line bclient is required for broadcast time packets to be processed by the NTP client In this case sample information from a client ntp conf file might look like trustedkey 1 2 bclient Network Time Protocol NTP does not permit comments in the ntp keys files Inserting comments will prevent the ntp keys files from being parsed correctly and turns off authentication at initialization Sample information in a client ntp keys file might look like 1 M symmetricom 136 997 01530 01 Rev C 25 Jan 2008 2 M TTXL GPS When you invoke the NTP client at the command line use the following options b to turn on broadcast reception k etc ntp keys to specify the name and location of the keys file d for debugging An example command line migh
18. 93 F11 Time Output Format 46 F110 J1 Input Time Code 93 F111 J2 Output Rate 96 F113 J3 Input Aux Ref 100 F117 Factory Configuration 103 F119 GPS Receiver Configuration 104 F126 Options Key Entry 108 F13 Time Error 48 F18 Software Version 49 F2 12 24 Hour Format 35 F3 Time amp Date 37 F4 Serial Port Configuration 38 F5 Time Quality Setup 39 F50 GPS Receiver LLA XYZ Position 49 F51 GPS Antenna Cable Delay 52 F52 Distribution Cable Delay 53 F53 GPS Operation Mode 55 F6 Keypad Lock 41 F60 GPS Satellite List 56 F66 Daylight Saving Time DST 17 F66 Daylight Saving Time DST Mode 58 F69 Time Mode 18 61 F71 Oscillator Statistics 62 F72 Fault Status 64 F73 Alarm Control Status 64 F8 Continuous Time Once per Second 42 46 F9 Time On Request 44 46 F90 Code Output Configuration 72 Factory Configuration 103 997 01530 01 Rev C 25 Jan 2008 147 Factory Mode Jumper 88 Fault Status 64 Firmware 74 Firmware Upgrade 118 Format Time Output 46 Freq Meas 6 100 Frequency Measurement 6 100 Function Reference 32 Function Summary 32 Future Expansion 129 G G 78 Gateway 78 Goodbye 113 GPS Antenna Cable Delay 52 M12 Receiver 109 Operation Mode 55 Receiver Configuration 104 Satellite List 56 Signal Strength Requirements 15 GPS Receiver LLA XYZ Position 49 Guest Login User Name Password 29
19. 997 01530 01 Rev C 25 Jan 2008 65 Alarm Definitions Clock Status Locked The XL GPS clock is locked to the GPS reference source and is operating within the F73 Time Error Threshold Unlocked Check the other alarm indicators to determine the cause of the problem PLL Locked The clock PLL is locked and operating nominally Unlocked The clock PLL is malfunctioning Return to Symmetricom for service See H Sales and Customer Assistance on page 143 GPS Locked The GPS receiver is receiving a sufficient number of valid GPS satellite signals and is generating a valid timing solution Unlocked The GPS receiver is not providing a valid timing solution due to one of the following causes e nsufficient visibility of GPS satellites at the antenna location e Poor GPS satellite signal strength A poorly positioned GPS antenna A broken or disconnected antenna cable Anabsent or non functioning GPS receiver card See Installing the GPS Antenna on page 13 for GPS antenna installation guidelines DAC Locked The DAC which disciplines the clock oscillator to the reference source is operating nominally Unlocked The DAC is operating out of specifications Return to Symmetricom for service See H Sales and Customer Assistance on page 143 1st Time Lock Time Error and Time Threshold Time Error issues an alarm when the worst case time error F13 Time Error on page 48 of the XL GPS system clock exceeds
20. ASCII character F 01 function number S ASCII space character one or more SIGN either no character or for positive offsets or for negative offsets HH one or two digit hours offset from 00 to12 hours ASCII character for a colon MM two digit minutes offset CR carriage return character lt LF gt line feed character For example to set the time zone offset enter Fl 8 00 lt CR gt XL GPS responds OK CR LF To verify the change enter F1 lt CR gt XL GPS Responds F1 8 00 lt CR gt lt LF gt F2 12 24 Hour Format Use function F2 to apply a 12 or 24 hour format to the time output by keypad Interface on page 25 F8 Continuous Time Once per Second on page 42 s F9 Time On Request on page 44 s F90 Code Output Configuration on page 72 F2 affects how all four types of time Local Standard UTC GPS appear when displayed or output The 12 hour format counts hours from 1 to 12 twice per day like a conventional wall clock The 24 hour format counts hours from 1 to 24 once per day For example in the 24 hour format 18 00 is equivalent to 6 00 PM in the 12 hour format i e 18 00 12 00 6 00 PM 997 01530 01 Rev C 25 Jan 2008 35 Note Local time is commonly displayed in both 12 and 24 formats The specifications for Standard UTC and GPS call for using the 24 hour format Applying the 12 hour format to any time type leads to ambigu
21. BNC T connector TheL1 GPS antenna is designed to operate with up to 150 ft 60 96 m of RG 59 coax cable An optional Down Converter can be used for cable runs of 1 500 ft 457 2 m using RG 58 coaxial cable SIMCO 2 Symmetricom LLLA LLLLL A ll ILLA KZ LLLA zz SS gt l AM N A fa BIB Figure 1 L1 GPS Antenna methods for cabling and mounting 14 997 01530 01 Rev C 25 Jan 2008 GPS Signal Strength Requirements Refer to Figure 2 The required gain at the GPS receiver s ANTENNA connector is greater than 20 dB and less than 36 dB A standard 150 foot length of RG 59 coax cable of has a loss of 16 21 dB which meets this requirement Abide by the minimum input gain requirements if using other cable types Additionally if changing the antenna abide by the 41 dB gain requirement Other factors such as radiation coverage VSWR and input impedance also affect system performance Symmetricom recommends using the standard antenna and cable provided with the GPS receiver Figure 2 GPS Signal Strength Requirements Making Additional Connections Make the following optional connections ANTENNA GPS receiver antenna connector with GPS antenna cable See GPS Receiver on page 133 for more information Warning Use a 12 volt capable GPS antenna NET network port with the
22. Either current or blank LEVEL Satellite signal strength in dBW LE Line feed character For example to display the complete GPS satellite list enter F60 ALL lt CR gt F60 responds 997 01530 01 Rev C 25 Jan 2008 57 D H F60 pr F60 pr F60 pr F60 pr F60 pr F60 pr F60 pr F60 pr F60 pr F60 pr F60 pr F60 pr F60 pr F60 pr F60 pr F60 pr F60 pr F60 pr F60 pr F60 pr F60 prn21 F60 prn22 F60 prn23 F60 prn24 F60 prn25 F60 prn26 F60 prn27 F60 prn28 F60 prn29 F60 prn30 F60 prn31 F60 prn32 good current 159dBW good current 162dBW good current 163dBW unknown P OD 2 4 W PN unknown 3 oy Ul unknown D unknown good current 161dBW unknown e e Oo OO unknown known o known od current 159dBW known Q o JOBgBgB23ooooco0moogoooco8S8ngSsooosos known known known 0 7J0040yYNR O known 99002990229 2 ja N H OG KNOWN KNOWN Or ar Gy e Gay Cae Gs known d tracked 164dBW known known known ur Cia Gir Cs known jected tracked 156dBW known H known known known ri Gir Ci AGS known Similarly to display a list of the current tracked bad or rejected satellites enter F60 CURRENT lt CR gt Or F60 TRACKED lt CR gt F66 Daylight Saving Time DST Mode Use function F66 to enable or disable Daylight Saving Time DST and to schedule when Local time enters and leaves D
23. FTP server so the user can edit them When finished editing the user transfers the config files back to the XL GPS using the F100 CONFIG command Overview of Steps Set up an FTP server on your workstation Using the XL GPS s command line interface enter the F100 CONFIG get command The XL GPS transfers copies of its configuration files over the network to the FTP on your PC Edit the configuration files Give the XL GPS a new command F100 CONFIG set The XL GPS retrieves copies of the edited configuration files from the FTP and overwrites it s current config files with the newly edited ones Set up the FTP Server To save time and trouble download a pre configured FTP server from http www ntp systems com zip warftpd1 zip and extract it to the C drive on your workstation Otherwise customize your existing FTP server setup as described in this section When performing these operations the user issues command line instructions to the XL GPS The XL GPS responds to those commands by connecting to the FTP server and transferring files to and from the FTP The XL GPS gives the FTP server Anonymous as its user name and uses a null password e g the equivalent of pressing the Enter key on your keyboard instead of entering text The FTP server must be configured as follows Anonymous log ins are enabled The password for Anonymous is disabled or allows a null password Anonymous has read write privileges to Ano
24. GPS ANTENNA is OK In F73 Alarm Control Status page 64 check that the GPS PRI is OK and is ALARM ENABLED the same for GPS SEC if two GPS receivers are present Clear any alarm latches if present Press the STATUS key LOCKED GPS PRI should appear on the front panel display without an asterisk If an asterisk appears it means that a reference source is not available To troubleshoot a problematic Antenna installation recheck the physical location of the antenna the cabling and the configuration settings described in this manual 22 997 01530 01 Rev C 25 Jan 2008 Rack Mounting the XL GPS The XL GPS comes with the following parts needed to mount the XL GPS securely in any ElA standard 19 inch 48 26 cm rack 2 mounting brackets 4 flat head Phillips screws Have the following items ready and available The appropriate AC or DC power source to connect to the XL GPS s power supply A 2 size Phillips bit screwdriver To rack mount the XL GPS Unscrew the four phillips head screws from the front end of the side panels Use the same screws to attach the rack mount brackets as shown Tighten the screws using a 2 size Phillips screwdriver Position the XL GPS in any EIA Standard 19 inch 48 26 cm rack system and line up holes in the brackets with the holes in the rack Secure the brackets to the rack using rack mount screws 997 01530 01
25. Mode Use function F53 to set the GPS M12 Receiver in Time Mode or Dynamic Mode Select Dynamic Mode if the position of the receiver is subject to frequent change or if it is in continuous motion For example use Dynamic Mode when the XL GPS is used in mobile vehicles such as ships land vehicles or aircraft With Dynamic Mode selected the receiver updates the position information repeatedly to arrive at the best time calculations for a mobile environment Select Time Mode if the receiver used in a static environment such as a server room With Time Mode the receiver averages the position data over time to determine the antenna position and calculate the time precisely and accurately Keypad While viewing the Status screen on the XL GPS front panel display press the following keypad buttons ENTER 53 ENTER If a GPS M12 Receiver is not available F53 displays GPS M12 AVAILABILITY NOT AVAILABLE Note If F53 indicates that M12 is not available reset M12 If availability is still an issue call customer service If a GPS M12 Receiver is available F53 displays GPS MODE SELECT TIME MODE or DYNAMIC MODE To change the mode use the UP DOWN ARROW buttons and press ENTER F53 asks SAVE CHANGES YES To save changes press ENTER Command Line To request the GPS operation mode of an GPS M12 Receiver 87 8028 2 enter F53 CR F53 responds using the following form
26. Rev C 25 Jan 2008 23 Note Ensure that the ambient operating temperature does not exceed 50 C Install the XL GPS chassis so that the top and bottom holes are unobstructed and have sufficient clearance to allow 6 cfm of air to pass through the chassis To maintain recommended operating temperatures install a rack cooling fan capable of 100 cfm in heavily loaded racks 24 997 01530 01 Rev C 25 Jan 2008 4 User Interfaces The XL GPS features two user interfaces for controlling the XL GPS s functions A keypad interface on the front panel of the XL GPS A command line interface available through the serial and network ports There is also an Alarm Status LED on the front panel Alarm Status LED The Alarm Status LED located on the front panel displays the alarm state of the XL GPS unit The LED has four states Dark Power is off Green No F73 related alarms The current reference source input is locked Amber No F73 Alarms Timeout Delay is counting down but hasn t elapsed The current reference source input is unlocked e g broken antenna cable or no GPS signal Red An indicator in F73 has triggered an alarm Check F73 to find out what the fault unlock condition is and take appropriate action Notes The amber LED can turn green again while the reference source input remains unlocked This is because F119 s GPS Status controls whether the LED turns amber F73 s Timeout Delay contro
27. SOs bobo Bi Nes Foscari 122 C SNMP a A A A a erwin 124 SNMP Private Enterprise MIB Structure o oooooooooooo 124 SNMP Addressing toa ia IS Meh ae 124 New Top Level Structure of Enterprise MIB for XL GPS 124 XL GPS System Group aii cos wd wee e a ey n doe ea 126 The XL GPS Fault Grodp ss sue etel errada 127 The XL GPS System Status Group 220000 0 o 128 XL GPS MainGard Group serenidad 129 XGPS Taps s a du QUU Ls ELO FL Me Ei ed O 129 FULTS EXPANSION Zum oc dati mn wd AS dor apis ol ROS Dea AA Rod 129 Glossary of SNMP Related Terms 00000 eee oo 130 Configuring and Testing SNMP eese eere 131 HP OpenView Configuration 2 052006 eee ee 4 Rr m mn 131 AL GPS Configuration x jeans 4 Se Da se de eb ob ques en Reade S 133 Test Procedure Lic D te dieser Beda GY id eatin ies 133 D Network Time Protocol NTP 0 000 e ee eee eee eee eens 135 Editing MP C M PEN 135 Editing MD5 keys on the XL GPS vc ose cs esos raras e 136 Editing MD5 keys on the NTP Client 222 222 240 400 io IR Re 136 E Time Gode Formats 2c leu xh R nese S RUE ees 138 OVEIVIOW tice ehh ege A ded ce hop Aaa Rue UR cal d eu AM t oer 138 IRIG rers a hM a o setti d de e 138 FI FOQ HOEOTILa 5 240 d ctn uci dt 5 849 0 E491 doc do iw a Re e n Eh 138 IRIG Code Format suat 3t e vafer D e Un Moe e er a 138 IRIG B Time Quality Flags ume ex RUE E 139 QUIDUP u
28. See Time and Frequency Accuracy on page 3 The GPS M12 Receiver card comes with an L1 GPS antenna cabling and mounting hardware unless otherwise specified at the time of purchase The GPS M12 Receiver uses a TRAIM Time Receiver Autonomous Integrity Monitoring algorithm to monitor the integrity of the receiver s timing solution Using redundant measurements TRAIM detects and quarantines anomalous GPS signals independent of the GPS health ephemeris data The quarantined signal is excluded from the timing solution for 12 hours before it is requalified for inclusion in the timing solution For more information about the M12 receiver visit http www motorola com ies GP S products positioning html See Installing the GPS Antenna on page 13 for information on selecting an antenna site mounting the antenna and signal strength requirements The GPS M12 Receiver card can be managed and configured using F53 GPS Operation Mode page 55 and F119 GPS Receiver Configuration page 104 Specifications Frequency 1575 42 MHz L1 signal Code Coarse Acquisition C A code Tracking Up to 12 satellites with TRAIM Position Accuracy Typically 10m when tracking four 4 satellites TRAIM Mask 14S 1 PPS Accuracy UTC USNO 30 nS RMS 100 nS Peak Time standard UTC or GPS Antenna input Female BNC Antenna Power 20 mA 220 mA 12 V Related topics Installing the GPS Antenna on page 13 e Verifying Antenna Installation
29. and measures it against the system derived time The a minimum pulse width of the input signal is 100 nS The input impedance is selectable at 100 kQ or 50 The rising edge of the pulse is measured with 5 nS resolution relative to the system clock time Pulse width Active Edge High Level Low Level Impedance Resolution Accuracy Qty Connector J2 Rate Out 100 nS min Rising Logic Hi 21 25 V lt 10V Logic Low 1 25 V 0V 100 KQ or 50 Q 5 nS single shot Refer to Time and Frequency Accuracy on page 3 1 BNC female The Rate output is default 10 MPPS and configuration is via the Keypad Serial I O and Network port Rate Accuracy Duty cycle Amplitude TTL Qty Connector 997 01530 01 Rev C 25 Jan 2008 1 PPS 10 PPS 100 PPS 1 kPPS 10 kPPS 100 kPPS 1 MPPS 5 MPPS 10 MPPS G Refer to Time and Frequency Accuracy on page 3 60 40 10 TTL Levels into 500 1 BNC female J2 Optional Programmable Pulse Out PPO The PPO allows generation of a precisely synchronized trigger pulse at an arbitrary time and with arbitrary pulse width in integer multiples of 1 uS The rising edge of the trigger output can be programmed to occur with 1 us resolution Pulse width Programmable in 1 uS steps On time edge Rising Amplitude TTL Levels into 50 Q J3 Optional Frequency Measurement The Frequency Measurement Freq Meas option measures an external frequency applied to t
30. are invalid an error message will be returned 60 997 01530 01 Rev C 25 Jan 2008 F69 Time Mode Use function F69 to select the time type displayed by The XL GPS s front panel display F8 Continuous Time Once per Second on page 42 e F9 Time On Request on page 44 F90 Code Output Configuration on page 72 Select between the following types of time UTC Universal Coordinated Time differs from GPS Time by the addition of leap second corrections to compensate for variations in the earth s rotation GPS Time is derived directly from the GPS constellation and doesn t contain any leap second adjustments or other GPS to UTC corrections Standard Time is UTC plus a time zone adjustment For example Pacific Standard Time is UTC minus 8 hours Local Time is UTC plus a time zone and a daylight saving time adjustment The factory setting is UTC Local Time modifies UTC time to include the Time Zone and Daylight Saving Time adjustments if enabled by the user Related functions F1 Time Zone Offset on page 34 F66 Daylight Saving Time DST Mode on page 58 Command Line Use the following format to display the time mode currently used F69 lt CR gt F69 responds using the following format F69 lt S gt lt TT gt lt CR gt lt LF gt where F69 Function number 69 lt S gt ASCII space character TT Time Type Either GPS UTC LOCAL or STANDARD lt CR gt Carr
31. attention or notification Configuring and Testing SNMP This section outlines the procedure to perform verification tests on the SNMP component of the XL GPS product Prerequisite XL GPS unit PC with HP OpenView installed located on the same subnet HP OpenView Configuration Create the Network Map 1 Power on the XL GPS unit 2 Log on to the PC with HP OpenView installed as the Administrator user 3 Start the HP OpenView Network Node Manager application 4 Select the menu item Map gt New 5 In the Name field enter xIGpsTestMap 6 Click the Next button 3 times and the Finish button 1 time to complete the Map definition and open the Map Load the Symmetricom Enterprise MIBs 1 Select the menu item Options gt Load Unload MIBs SNMP A dialog box titled Load Unload MIBs SNMP will pop up 2 In the dialog box click the Load button to load the MIBS symmetricomTtm SMIv2 mib xlGps SMIv2 mib xIGpsMainCard SMlv2 mib and xIGpsSystem SMlv2 mib 3 When xlGpsSystem SMIv2 mib is loaded a dialog box with the title Load Trap Type Notification Type macro will appear Click the OK button to add the trap definition into the OpenView event 997 01530 01 Rev C 25 Jan 2008 131 system Click the lt OK gt button again to confirm the action 4 Click the Close button to exit the Load Unload MIBs SNMP dialogue box Configure Traps 1 Select the menu item OptionsEvent Configuration A
32. character In this case the indicates that the XL GPS is unlocked to a reference source As the XL GPS locks to the reference source the disappears and after a couple seconds the new synchronized time of year information appears If the reference source becomes unavailable again F8 continues generating time of year information based on the synchronized time and the unlock appears 199 199 199 199 11 11 11 11 1931 19 32 19 337 19 34 The format of time output can be changed using F11 Time Output Format on page 46 The default output string format is lt SOH gt DDD HH MM SSQ lt CR gt lt LF gt where lt SOH gt lt CR gt lt LF gt DDD HH MM SS ASCII Start of Heading character e g in decimal ASCII code 001 ASCII Carriage Return character is output at the 1 PPS mark 1 mS ASCII Line Feed character day of year hours minutes seconds colon separator time quality character see the following table 997 01530 01 Rev C 25 Jan 2008 43 The time quality character Q is one of the following characters SPACE Time error is less than time quality flag 1 s threshold Time error has exceeded time quality flag 1 s threshold Time error has exceeded time quality flag 2 s threshold Time error has exceeded time quality flag 3 s threshold Time error has exceeded time quality flag 4 s threshold Or A reference source is unavailab
33. for directions on setting the correct cable delay F51 Guidelines For RG 59 multiply the cable length by 1 24 ns ft to get the value for F51 For RG 58 multiply the cable length by 1 4 ns ft to get the value for F51 Don t use function F51 to adjust the XL GPS s timing outputs use F52 Distribution Cable Delay instead Command Line Use the following format to display the current Antenna Cable Delay setting F51 CR 52 997 01530 01 Rev C 25 Jan 2008 The XL GPS responds using the following format F51 lt S gt lt gt lt DELAY gt ns lt CR gt lt LF gt where F ASCII character F f or F for input string 51 the function number lt S gt ASCII space character one or more CR carriage return character SEP one or more space characters lt DELAY gt 1 to 6 digit delay from 0 nS to 999999 nS ns nanoseconds ns or NS for input string lt LF gt line feed character Note Only positive delays are valid For example to see the antenna cable delay enter F51 lt CR gt XL GPS responds F51 000060ns lt CR gt lt LF gt To set the antenna cable delay use the following format F51 lt S gt lt DELAY gt NS lt CR gt For example to set the antenna cable delay to 100 nS enter F51 100NS lt CR gt XL GPS responds OK lt CR gt lt LF gt F52 Distribution Cable Delay Use function F52 to display or set the distribution cable delay for the standard CODE time code and
34. gt MASK lt SEP gt lt 12345678 9ABCDEFGHIJ gt lt CR gt lt LF gt 997 01530 01 Rev C 25 Jan 2008 Where the value of each character in lt 123456789ABCDEFGHIJ gt field is either E or D E means the corresponding indicator is enabled and can trigger an alarm if it enters a fault state D means the indicator is disabled or not available and will not trigger an alarm if it enters a fault state To enable E disable D or leave the indicator unchanged enter E D or for each character in lt 123456789ABCDEFGHIJ gt when you enter the following string F73 lt SP gt MASK lt SEP gt lt 12345678 9ABCDEFGHIJ gt lt CR gt The XL GPS will sets the new alarm mask and responds OK lt CR gt lt LF gt The following summarizes the fault alarm mask setting in the lt 123456789ABCDEFGHIJ gt field 1 E PLL Synthesizer Alarm Enabled D PLL Synthesizer Alarm Disabled 2 D not used 3 E GPS Alarm Enabled D GPS Alarm Disabled 4 D not used D not used D not used D not used D not used D not used E DAC Alarm Enabled D DAC Alarm Disabled B E First time lock Alarm Enabled D First time lock Alarm Disabled D o o 0 YN Oy Ww ll C E Time error Alarm Enabled D Time error Alarm Disabled D E Time out Alarm Enabled D Time out Alarm Disabled E E NTP Alarm Enabled D NTP Alarm Disabled Default if NTP Option not enabled Query or set Time Erro
35. on page 22 F50 GPS Receiver LLA XYZ Position on page 49 997 01530 01 Rev C 25 Jan 2008 109 110 F51 GPS Antenna Cable Delay on page 52 F60 GPS Receiver Satellite List on page 56 E69 Time Mode on page 61 F73 Alarm Control Status on page 64 F90 Code Output Configuration on page 72 F119 GPS Receiver Configuration on page 104 997 01530 01 Rev C 25 Jan 2008 7 XL GPS Generated Messages Error Messages ERROR 01 VALUE OUT OF RANGE You entered a command using the correct format that contained a value probably numeric that was outside the range of acceptable values Recovery Action Re enter the command using an acceptable value ERROR 02 SYNTAX You entered a valid command but using the wrong format Recovery Action Re enter the command using the correct format ERROR 03 BAD MISSING FIELD You entered a command that lacks a required field Recovery Action Re enter the command using the required fields ERROR 04 BAD DATA TIMEOUT CONDITION The GPS option card did not respond to the XL GPS soon enough Recovery Action Re enter the command using the required fields ERROR Invalid Command You have entered an invalid command Recovery Action Consult the manual for the correct command and re enter ERROR Can t create netdevice lt NAME gt The XL GPS can not create the device needed to map the host to a drive Recovery Action Restart the Unit If
36. pop window titled Event Configuration will appear 2 In the Event Configuration window scroll through the Enterprises list to the bottom and select XL GPS 3 In the Events for Enterprise XL GPS select the alarmSystemNotification entry Then select the menu item Edit gt Events gt Modify A popup titled Modify Events will appear 4 In the Modify Events popup click the Event Message tab Under Actions select the Log and display in category In the Event Log Message field enter XL GPS System Trap Do not en ter the quotation marks 5 Select the menu item Options gt MIB Application Builder SNMP A popup titled MIB Application Builder SNMP will appear 6 In the MIB Application Builder SNMP popup select the menu item Edit gt New A popup titled New MIB Application will appear T Enter xIGpsStatus in the Application ID field and the Application Title field Leave Application Type as Form Click the Next button 8 The title of the popup will now be New Application Builder Display Fields Click the Add button A popup titled New Application Builder Add MIB Objects will appear 9 In the New Application Builder Add MIB Objects will appear popup descend the MIB tree by click ing on the plus symbol next to the entries iso gt org gt dod gt private gt enterprises gt symmetri
37. shock resulting in injury or death Disconnect all power before installing or removing the option card Dangerous voltages may be present in the expansion module and in the unit even when the power is disconnected To install the optional Expansion Module 1 Set the unit up on a clean safe stable work surface that provides good visibility and maneuverabil ity to work with screwdriver 2 On the back panel select an option bay and unscrew the retaining screws and remove the small aluminum panel from the bay 3 Line up the edges of the module with the guide grooves in the option bay and slide it in 4 When the card is in almost all the way push it firmly the rest of the way in until the faceplate of the option card is flush with the back panel 5 Insert and tighten the retaining screws so the expansion module is secured in place To remove the expansion module remove the screws pull the card out and secure the small aluminum panel in its place with the screws Configuring the Expansion Module Each of the Expansion Module s outputs can be independently configured to generate a signal type This is done using jumpers and switches located on the module Symmetricom configures the output signals 20 997 01530 01 Rev C 25 Jan 2008 at the factory per the customer sales order To change the configuration identify the jumper at JP2 that corresponds to the output you are configuring For example jumper J4 AM corresponds t
38. the same formats as the preceding XL GPS responses Only valid values are accepted To disable F113 enter F113 DISABLE lt CR gt Or to enable Freq Meas of a 1 MHz input with a 50 Q input impedance every 1 seconds enter F113 FREQ MEAS 1MHZ 50 1 lt CR gt To all three of the above examples XL GPS responds OK lt CR gt lt LF gt If enabling Freq Meas display the Freq Meas measurements using the following format F113 lt S gt SHOW lt CR gt XL GPS responds using the following format Interval lt S gt is lt S gt lt INT gt lt S gt seconds lt CR gt lt LF gt H HHH HE lt CR gt lt LF gt 102 997 01530 01 Rev C 25 Jan 2008 Where Interval is ASCII character string Interval is S ASCII space character or separator INT Frequency Measurement Interval seconds ASCII character string seconds ASCII plus or minus character ASCII integer from 0 to 9 e ASCII characters e lt CR gt lt LF gt line terminator either a carriage return and line feed for output strings or a carriage return only for input strings For example enter F113 SHOW lt CR gt XL GPS responds example Interval is 1 seconds lt CR gt lt LF gt 9 600000e 10 lt CR gt lt LF gt 1 080000e 09 lt CR gt lt LF gt 1 560000e 09 lt CR gt lt LF gt To stop Freq Meas enter Ctrl C on the command line Note Freq Meas remains active while the function is displayed
39. this error message persists contact Symmetricom Technical Customer Service ERROR Can t set host lt NAME gt ip lt ADDRESS gt You have incorrectly entered a parameter or there is no room currently in the Host table for another IP Address 997 01530 01 Rev C 25 Jan 2008 111 Recovery Action Verify correct parameter values If correct restart the XL GPS If this error message persists contact Symmetricom Technical Customer Service ERROR Action get or set is not specified You have omitted the get or set parameter from the F100 NTP Configuration command Recovery Action Re enter the command specifying the desired action ERROR Can t open source file lt NAME gt The file containing the needed data is unavailable Recovery Action Check file location and directory names to verify the path is accurate then re enter the command ERROR Can t open dest file lt NAME gt The destination file is unavailable Recovery Action Check file location and directory names to verify the path is accurate then re enter the command ERROR Can t write file lt NAME gt Data from the source file cannot be copied to the destination file Recovery Action Check file location and directory names to verify the path is accurate then re enter the command ERROR Configuration failed Your attempt to configure new parameters was unsuccessful Recovery Action Verify parameter values then re enter the command ERROR Con
40. to identify the class of object being accessed With this structure the system object 997 01530 01 Rev C 25 Jan 2008 125 ID is defined as Symmetricom products xlGps for the XL GPS product and Symmetricom products xxx for all subsequent products XL GPS System Group The x GpsSystem system group contains the systemFault and the systemStatus groups These groups contain information describing the operation of the XL GPS system as a whole The systemFault group contains information concerning system faults that have occurred as well as configuration parameters for the generation of system alarms called traps in SNMP resulting from those faults The systemStatus provides two different views of the operational system The first is a general view specifying if the clock is operational The second is a detailed view containing the current status of each system component The systemFault and systemStatus groups are described below 126 997 01530 01 Rev C 25 Jan 2008 The XL GPS Fault Group xliS ystem 1 systemStatus 2 systemFault systemFault History 3 systemAlarmData 1 faultPliSynthesizer alarmDatalpAddr faultLpnP Il alarmDataTimeStamp l alarm DataCode faultPrimaryGPS alarm DataStatus faultSecondaryGPS Descriptor faultIRIG faultAuxRef faultPrim aryPower faultSecondaryPower faultRbOsc system Fault faultTimeErrorThreshold Config f
41. 0 Network Port Configuration amp XL GPS Firmware 74 F100 EA Ethernet Address iz A e 76 ETODIP S IP AOOEBSS Sine aaa Enzo esed ec eb pfe 76 F100 SM Subnet Mask o s eer entre e hU UE AUR 77 F100 G Gateway estr dation bY oe ye fle SMe ah Sodas le fige Sk 78 F100 IC Network Port Settings 00 0 c eee eee eee 79 F100 BASET IOHOOU BASE T pc a 79 F100 L LOCK UNLOCK Remote Lockout 2005 80 F100 L Remote Lockout Status 22 0525 55s c bebe eee ee 81 F100 ST Self Test Status tensas Vera re a Boe ere 82 F100 BH Burn HOSE lt a ence ener estas eae eames ee Bead 83 F100 BUB Burn BootLoader 2 0 cee eee ee 83 FT00 BU BUITY c oes sepen plas ee be tee he adas 84 F100 BF Burn File System auos s ue RE IRI eeu ey RAE RSEERE NS 85 F100 BUFP Burn FPGA Firmware oocccccccoccc o 85 F100 CONFIG Configure NTP amp SNMP 2200000055 87 F100 J Factory Mode Jumper 0 cece eee eee eee 88 FAO KEL REDOOP adas oso a Sentra ada a mae NE 89 F100 P Change User Password 2000 cece eee ee eee 90 POO eet cede Ere create Does ed ee ee ee eat 91 F100 PN Change User Name 2 20 o 0006 I Rn 91 F108 Oscillator Configuration 0 0 2 ees 93 FT10s J1 input TIET uro von ws kel hei cest ae E Pl he Mah ec 93 E1112 Output Rate PPO 55e ius ad Po E xo Ehe ve erit 96 F113 J3 Inpu
42. 0 BUB Burn BootLoader Note See B Upgrading System Firmware on page 118 When upgrading the system firmware use function F100 BUB to burn the BootLoader to write the BootLoader to flash memory 997 01530 01 Rev C 25 Jan 2008 83 To write the BootLoader to the flash send the F100 BH command with the FTP host file path and name and then enter F100 BUB lt CR gt XL GPS responds OK lt CR gt lt LF gt For example gt f100 bub OK URNING FILE 192 8000 bt WITH SIZE 452164 TO PARTITION 0 SECTOR 0 EC 0 EC EC He El 0 0 0 0 0 0 J UV VVS Y bd Dd uH E Q NOB NR C 0 B S S S S S S S FLASH SUCCESSFULLY PROGRAMMED CRC32 Ox9EFBE60A If more than ten flash sectors are written during this process then an error has occurred in the burn You must rewrite both the bootloader sectors 0 to 9 and the program binary sectors 10 to 93 F100 BU Burn Note See B Upgrading System Firmware on page 118 Use function F100 BH when upgrading firmware to write the file selected with F100 BH to the flash memory Flash memory is checked to ensure that the correct file is used To write the file to the flash send the F100 BH command with the FTP host file path and name and then enter F100 BU lt CR gt XL GPS responds OK lt CR gt lt LF gt And for example displays the following text gt f100 bu OK BURNING FILE 192 8001 bin WITH SIZ
43. 000005 13 Mounting the GPS Antenna 2 0 ee eee 13 GPS Signal Strength Requirements 0 cee eee ee 15 Making Additional Connections liliis 15 Connecting the Power Supply 0 005 ooocicioce eb ee eee eee 16 Configuring the Network Port 500 eee ee eee 16 Configuring the Time Display lslllle ee 17 Using the Command Line Interface 0 0 02 es 18 Connecting to the Serial Port eee eee ee ee eee eee 18 Connecting to the Network Port 0 0 00000 c eee beeen eee 19 Installing the Expansion Module Ree Rd eem ee Dem ER 20 Configuring the Expansion Module 0 0000 eee eee ee 20 Verifying Antenna Installation llle 22 Rack Mounting the XL GPS ooooocoooooooennn eee 23 4 User Interfaces i52 es is aa er wa eae eoe X Cnr ace a d e c e e 25 Alarm Status LED iii ab 25 keypad Interface cae dio oro da a rada dedos 25 Tire DISpIay A NA a 25 Saltus DISDIaV a a a da ada dices 26 Menu Display Larra esti a eres ade ER 26 Keypad OPM A EEES E AAA A 27 Keypad Examples 322200 x22 03 0154113 a al xc BIME PUE P dal aE 27 Command Line Interface 2 0 52 cles eel ele 29 logging Ifi essor oa uet oue edu oie be visos aue tossed PEAD 29 Operator LOJN sands sa Erie aa dios te utu 29 Guest Logi oor tor oto oos LM tur caf ne Es 29 Logging Out m 30 Changing Username and Password annaa aana aaeeea 30 Session Timeout a
44. 1 PPS outputs F52 compensates for the signal s travel time from the XL GPS to its point of use The distribution cable delay applies uniformly to all output ports The as shipped factory setting is 0 ns The range of possible values is 999 999 ns to 999 999 ns Positive values advance the timing signals while negative values retard them 997 01530 01 Rev C 25 Jan 2008 53 To calculate what the setting should be multiply the delay foot by the length of the cable in feet The typical delays for the following cable types are RG 58 approximately 1 4 ns foot RG 59 approximately 1 24 ns foot Command Line To display the current distribution cable delay enter F52 lt CR gt The XL GPS responds using the following format F52 lt SEP gt lt SIGN gt lt DELAY gt ns lt CR gt lt LF gt where F ASCII character F f or F for input string 52 the function number S one or more space characters SIGN either or lt D gt 1 to 9 digit delay from 999999 nS to 999999 nS ns nanoseconds ns or NS for input string CR carriage return character LF line feed character For example to display the current distribution cable delay enter F52 CR XL GPS responds F52 000000ns lt CR gt lt LF gt To set the distribution cable delay to 60 nS enter F52 000060nS lt CR gt XL GPS responds OK lt CR gt lt LF gt 54 997 01530 01 Rev C 25 Jan 2008 F53 GPS Operation
45. 10MPPS Optional Programmable Pulse Optional Alarm Relay Connector Quantity and Type Four female BNC 997 01530 01 Rev C 25 Jan 2008 IRIG Code Out Format Amplitude AM Ratio AM Amplitude DC Phasing Alarm off off On Drive Max Voltage Max Current Rates Rate Duty cycle Amplitude TTL IRIG B 120 1 kHz AM or IRIG B 000 DC 3 0 Vp p 1V into 50 Q 3 1 10 TTL into 50 Q In phase with carrier 10 uS High Z Power off High Z Error major or minor enabled alarm fault Low Z Normal no major or minor enabled alarm faults Open Collector 25 VDC 50 mA 1 PPS 1 kPPS 10 kPPS 100 kPPS 1 MPPS 5 MPPS 10 MPPS 60 4096 10 TTL Levels into 50 Q Optional Programmable Pulse On time edge Amplitude Optional Alarm Relay Connection Max Voltage Max Current NTP Rising TTL Levels into 50 Q Terminal strip COM NO NC 48 VAC VDC 2A 24 VDC The standard network interface of the XL GPS can be optionally enabled at the factory or by the user in the field to become a Network Time Server NTS to client clocks over a network Time is acquired from the host clock and distributed over the network using the Network Time Protocol NTP Initialization of the NTS option is done via the Serial I O port Network Port or via the front panel keypad 997 01530 01 Rev C 25 Jan 2008 10 Support for version 3 0 of the NTP RFC 1305 as well as the Si
46. 1MDIYUIS ed Y AY NX AYQ 3O 3mI1 SNOLLONDd 10H 1NOO NOVA Sava SHMOH 310NN SONOO3S WY3A 3O 3 11 028 amu NO e 0 06 08 0L 09 os or oc oz 0i o GNOO3SITIIWN LNNOO X3ONI SQNO23S 0 3NVuUd3 INIL 997 01530 01 Rev C 25 Jan 2008 140 ime Zones World Map of T F 081 4 06 3 09 3 0t peidope Ajea awn prepueis ON 1 9 S q Y t 0 OEE d ES d ES 10 t N wy o qu WOI INLA DMI esioAru tl 14 cu OE LI I OE 0I 0l wy N WN WM T T P A OE 6 6 8 LT 0 9 9 OES wy our prepuris o 0 M 09 M 06 MOTI MOSI 2081 amO ooupu p joounoNy WH Ag pajiduoy sdo 4317 uimjunojy cy ouiino de saoe d awos ur iday st dun y paepuejs jo ooueApe ur moy auo ensn aung sawung oun y Bues 1u3r e oyeuirxoadde ose SOLIPPUNOQ ouoz 1007 1d y 01 poj2o1107 SANOZ AWIL AYVANV LS ernational Date Line nt e e 141 997 01530 01 Rev C 25 Jan 2008 G Part Names Standard Chassis Model XL GPS 1UChassis w Main CPU Card Software Key Enabled Options Network Time Protocol on Standard Network Port Time Interval Event Time TIET on Main CPU Card s J1 connector Programmable Pulse Output PPO on Main CPU Card s J2 connector Frequency Measurement Freq Meas on Main CPU Card s J3 connector Options Expansion Module Alarm Relay must be used in conjunction with
47. 213 and 1212 NTP Network Time Protocol A network time distribution protocol developed at the University of Delaware under the direction of Dr Mills NTP is a client server based protocol where the server is the supplier of time and the client is the consumer of the time information Private Enterprise MIB SNMP allows private organizations to define their own MIB extensions The IANA of the IETF issues for a fee a unique number to an organization that is an address entry point from the MIB II into the private data for that organization Only one Enterprise address is assigned to an organization The Enterprise address for Symmetricom is 1896 This address space has grown to over 130 997 01530 01 Rev C 25 Jan 2008 12 000 private addresses and Symmetricom is by comparison one of the earlier adopters of SNMP with an Enterprise MIB RFC Request for Comments A document reviewed and released by the IANA that defines the formal definitions of various Internet communication protocols and related information SNMP Simple Network Management Protocol This Internet communications protocol is used for the status and control of remote network devices Numerous IANA standards committees starting in 1990 and continuing to day define this protocol Trap or Trap Message A packet issued from an SNMP Management agent to an SNMP Management station The message is intended to relay and important even that occurred within the agent that requires
48. 45 01 lt CR gt lt LF gt With the above settings F9 displays lt SOH gt 10 45 01 234 lt CR gt lt LF gt The new time format above suppresses days and replaces the first colon separator with a vertical bar This enables the remaining characters which assume their default values F13 Time Error Use function F13 to request the estimated worst case time error due to oscillator drift during periods of unlock from a reference source See Time and Frequency Accuracy on page 3 for more information on time error for different reference sources Time error begins to accumulate when the receiver loses lock to a reference source The XL GPS calculates the worst case time error based on the stability of system clock s oscillator type and the time elapsed since loss of lock Command Line The Command line interface will report time error when it receives the following string F13 lt CR gt XL GPS responds F13 lt S gt lt ERROR gt lt CR gt lt LF gt where F13 ASCII string for function F13 lt S gt ASCII space character ERROR calculated worst case error in seconds lt CR gt carriage return character lt LF gt line feed For example to display the time error enter F13 lt CR gt 48 997 01530 01 Rev C 25 Jan 2008 XL GPS responds example F13 TIME ERROR 0 002932863 lt CR gt lt LF gt F18 Software Version Request Use function F18 to display the current firmware ver
49. 72 responds F72 CLOCK PLL LOCKED CLOCK STATUS UNLOCKED where CLOCK PLL Clock Phase Loop Lock status LOCKED or UNLOCKED CLOCK STATUS Clock Status LOCKED or UNLOCKED to the reference source shown The LOCKED state is based on the F73 Time Threshold value entered by the operator F73 Time Threshold sets the threshold in nS above which Time Error triggers an alarm When the oscillator s predicted worst case time error F13 Time Error on page 48 exceeds F73 Time Threshold Time Error enters a fault state and the CLOCK STATUS becomes UNLOCKED F73 Alarm Control Status Use function F73 to do the following See the state of an indicator Locked Unlocked or OK Fault Enable or disable the alarm for each indicator See the state of the Alarm Latch for each indicator Clear the Alarm Latch for all indicators Enable or disable blinking of the Alarm Status LED on the front panel while it is green or amber Set the values for Time Threshold Timeout Delay and Power On Alarm Suppress The following table summarizes F73 s alarm indicators and parameters as well as the factory settings for an XL GPS without options The factory settings vary depending on the options included at the XL GPS at the time it ships from the factory 64 997 01530 01 Rev C 25 Jan 2008 Upate the alarm settings when adding or removing the expansion module from the XL GPS Indicator Parameter Name Status Factory S
50. An optional Expansion Module provides four female BNC connectors that are factory configurable per the sales order The output configurations include IRIGB AM IRIGBDC Alarm 1PPS 1kPPS e 10kPPS e 100 KPPS 997 01530 01 Rev C 25 Jan 2008 1MPPS e 5MPPS e 10 MPPS Optional Programmable Pulse Optional Alarm Relay In addition the following software enabled optional features can be purchased and enabled using a software key at any time Network Time Server NTS Programmable Pulse Output PPO Time Interval Event Time TI ET e Frequency Measurement FREQ MEAS The optional OCXO oscillator upgrade provides enhanced short term stability while locked to GPS and improved holdover flywheeling when GPS is unavailable 2 997 01530 01 Rev C 25 Jan 2008 2 System Specifications Chassis The chassis is a 19 inch rack mounted 1U chassis Size 1 75 in x 17 1 in x 14 in Weight 8 Ibs Standard Hardware Standard 19 EIA rack system Optional Hardware Slide rack hardware Environmental Operating Temperature 0 to 50 C 32 to 122 F Storage Temperature 55 to 85 C 67 to 185 F Humidity 95 non condensing Vibration Operating GR CORE 63 4 5 2 4 locked to 1 0 g Vibration Storage Transport GR CORE 63 4 4 1 to 1 5g Time and Frequency Accuracy GPS Reference Time and frequency accuracy stability while locked to a GPS timing reference 1 PPS Output
51. Cat 5 network cable supplied to an Ethernet network Needed to manage the XL GPS remotely by network or optionally to distribute NTP time information SERIAL I O with RS 232 null modem cable supplied to the serial port on a PC For J1 J2 J3 and any other option cards See also F110 J1 Input TIET on page 93 F111 997 01530 01 Rev C 25 Jan 2008 15 J2 Output Rate PPO on page 96 F113 J3 Input Freq Meas on page 100 Figure 3 Connectors ANTENNA SERIAL I O J1 J2 J3 NET 1 PPS CODE ALARM Connecting the Power Supply Warning Ensure that a disconnect device such as a switch with the appropriate voltage current rating is provided when operating installing the XL GPS Connect the Power Supply it to a power source The green STATUS light indicates that the XL GPS is receiving power Notes for optional DC power supplies Usea 15 amp circuit breaker in series with the DC power source don t connect directly to a DC power source without the breaker 14 gage wire is the minimum recommended for DC power source hookup DC Power Supply Only to be used in a restricted access area e The screw torque range on the Power Terminal Block is 5 to 8 inch pounds When connecting to a DC power source first connect the positive power cable to on the power supply then connect the negative power supply cable to Upon receiving power the XL GPS goes through its startup sequ
52. E 803016 TO PARTITION 1 SECTOR 16 SEC 16 RE 0 SEC 17 RE 0 SEC 18 RE 0 SEC 19 RE 0 84 997 01530 01 Rev C 25 Jan 2008 SEC 20 RE 0 SEC 21 RE 0 SEC 22 RE 0 SEC 23 RE 0 SEC 24 RE 0 SEC 25 RE 0 SEC 26 RE 0 SEC 27 RE 0 SEC 28 RE 0 FLASH SUCCESSFULLY PROGRAMMED CRC32 0x2D9A260A F100 BF Burn File System Note See B Upgrading System Firmware on page 118 Use function F100 BF to burn file system when upgrading firmware to write a file system to the flash memory To write the file system to the flash send the F100 BH command with the FTP host file path and name and then enter F100 lt S gt BF lt CR gt XL GPS responds OK lt CR gt lt LF gt For example gt 100 bf OK BURNING FILE 192 8002 fs WITH SIZE 524288 SEC 94 SEC 95 SEC 96 SEC 97 SEC 98 SEC 99 SEC 100 SEC 101 SEC 102 F100 BUFP Burn FPGA Firmware Note See B Upgrading System Firmware on page 118 F100 BUFP Burn FPGA firmware from host to target flash Use Serial Network port F100 BUFP when upgrading FPGA firmware to write the FPGA program file selected with F100 BH to the flash memory Prior to issuing the F100 BUFP command the host computer must be setup as an FTP server with the new FPGA program file stored on the FTP server 997 01530 01 Rev C 25 Jan 2008 85 The existence of the FPGA program file on the FTP server and an Ethernet connection is checked when the com
53. GPS s functions and to perform firmware updates As shipped you can log in as Operator using User Name operator Password janus To maintain security change the Operator password at installation If you are logged in as operator the only command line interface function you cannot perform is changing the Guest password Guest Login Use the guest login to view function settings As shipped you can log in as guest using User Name guest Password ttm To maintain security change the Guest password at installation 997 01530 01 Rev C 25 Jan 2008 29 If you try to use a function that is not accessible from the guest login you will see a message such as Access denied or Command canceled Logging Out You can log out using the following commands logout logoff exit quit Changing Username and Password To change the user name and password use the following commands le F100 P Change User Password on page 90 F100 PN Change User Name on page 91 To reset a lost or forgotten operator username password use F100 P and F100 PN commands from the command line interface on the serial port Session Timeout and Priority The XL GPS s system firmware has session timers that will terminate an inactive command line session on the network port after 15 minutes The XL GPS does not terminate inactive command line sessions on the serial port The user can open a network port session and a seri
54. I space character one or more TIME MODE the time mode the entered time refers to LOCAL STANDARD GPS UTC SEP one or more separator characters either space comma or tab MM two digit month lt DD gt two digit day of month lt YYYY gt four digit year ASCII character for slash delimiter 997 01530 01 Rev C 25 Jan 2008 37 ASCII character for a colon delimiter lt hh gt one or two digit hours lt mm gt two digit minutes lt ss gt two digit seconds lt CR gt carriage return character lt LF gt line feed character For example to display the date and time send F3 lt CR gt XL GPS responds F3 UTC 01 01 2002 00 05 34 lt CR gt lt LF gt To set the time and date send F3 UTC 07 14 2002 18 20 30 lt CR gt Note Only valid times and dates are accepted XL GPS responds OK lt CR gt lt LF gt F4 Serial Port Configuration Use function F4 to change or display the serial port settings The factory settings are e Interface RS 232 e Baud rate 9600 e Data bits 8 e Parity NONE only available valid when Data Bits is set to 8 Stop bits 1 Command Line To display the Serial Port settings send F4 lt CR gt XL GPS responds F4 lt S gt lt RS gt lt SEP gt lt BR gt lt SEP gt lt DB gt lt SEP gt lt P gt lt SEP gt lt SB gt lt CR gt lt LF gt 38 997 01530 01 Rev C 25 Jan 2008 where F ASCII charac
55. L GPS responds to those commands by connecting to the FTP server and burning the software to system memory The XL GPS gives the FTP server Anonymous as its user name and uses a null password e g the equivalent of pressing the Enter key on your keyboard instead of entering text The FTP server must be configured as follows Anonymous log ins are enabled The password for Anonymous is disabled or allows a null password Anonymous has read write privileges to Anonymous s home directory Obtain the current system firmware files E g 192 8001 bin 192 8000 bt 192 8002 fs from Symmetricom s customer support website Place the system firmware upgrade files in home directory of the anonymous user f you re using the preconfigured FTP server C Symmetricom is the default or home directory Open a Command Line Session on the XL GPS Note The XL GPS and FTP server need to be connected by a TCP IP network Ideally they should be on an isolated subnet Connecting them over a network with multiple hops or one with heavy 118 997 01530 01 Rev C 25 Jan 2008 network traffic raises the possibility that the system software files could be corrupted yielding the XL GPS inoperable Telnet to the XL GPS over the network For example at your workstations command line type telnet 192 168 46 10 When prompted log in to the unit using the operator s username and password the user name and password are usually operator a
56. L GPS responds O K lt CR gt lt LF gt ESETING THE UNIT lt CR gt lt LF gt PLEASE WAIT lt CR gt lt LF gt eJ F100 SM Subnet Mask Note F100 SM can be used concurrently with F100 IP and F100 G See the last example provided in the F100 IP IP Address section directly above this one Use function F100 SM to display or configure the Subnet Mask To set the Subnet Mask and restart the unit enter F100 lt S gt SM lt S gt lt nnn nnn nnn nnn gt lt CR gt 997 01530 01 Rev C 25 Jan 2008 77 where F ASCII character F 100 unit function number S space IP specify IP command nnn nnn nnn nnn dotted decimal address 0 to 255 CR input line terminator For example enter F100 SM 255 255 255 240 lt CR gt XL GPS responds OK lt CR gt lt LF gt RESETING THE UNIT lt CR gt lt LF gt PLEASE WAIT lt CR gt lt LF gt To obtain the Subnet Mask of the unit Standard network port enter F100 SM lt CR gt XL GPS responds F100 SM lt nnn nnn nnn nnn gt lt CR gt lt LF gt where lt nnn nnn nnn nnn gt is the dotted decimal address notation An example of the response is F100 SM 255 255 255 125 lt CR gt lt LF gt F100 G Gateway Note F100 G can be used concurrently with F100 IP and F100 SM See the last example provided in the F100 IP IP Address section which starts on page 76 Use function F100 G to display or configure th
57. NMP set value field type 1 Click the Set button 5 Verify that a popup appears saying Set has completed successfully 6 Select the menu item xIGps Configuration In the popup xlGpsconfig verify that the maskPIl Synthesizer entry is set to disabled T In the Browse MIB popup select the maskPlISynthesizer entry In the MIB Instance field type O In the SNMP set value field type 2 Click the Set button 8 Verify that a popup appears saying Set has completed successfully 997 01530 01 Rev C 25 Jan 2008 133 9 Select the menu item xIGps gt Configuration In the popup xIGpsconfig verify that the maskPIl Synthesizer entry is set to enabled 10 Repeat steps 4 9 in turn for each additional entry under systemFaultConfigMasks Trap Testing 1 1 Perform an action to generate a trap 2 2 Select the menu item Fault gt Alarms 3 3 Verify in the All Alarms popup that there is an entry of the form Normal Thu Mar 21 14 30 09 192 168 11 218 XL GPS system trap cts xlGps al 192 168 11 218 OctetString HH MM Ss alarmPrimaryPower OctetString F73 S LP 134 1 private enterprises 2 private enterprises 3 private enterprises 4 private enterprises symmetricom symmetricom UTC symmetricom symmetricom LL PSR tm produ m produ m produ m produ cts xlGps al cts xlGps al cts xlGps al
58. O pulse outputs on page 98 regarding usage of wildcards to specify PPO repetition rates PPO can provide the following sub second repetition rates 100 kPPS 10 kPPS 1 kPPS 100 PPS and 10 PPS f PPO only specifies one time it is the start time The stop time is automatically set for one microsecond later Keypad Selecting one of the Standard Rates Using the keypad press the ENTER 111 ENTER buttons Select one of the standard rates using the up down arrow buttons and press the ENTER button again When prompted Save changes Yes press the ENTER button one more time Programming the PPO option If available PPO appears as the first option when you enter F111 Press the ENTER button to start programming PPO Otherwise use the up down arrow buttons to select one of the standard rates The display shows the PULSE START TIME followed by the Time of Year and Time of Day fields Program the PPO option as explained in the Command Line section below Use the CLR key to enter the X wildcards if needed Command Line Requesting the Current Configuration To request the J2 Output Configuration enter the following F111 lt CR gt XL GPS responds in the following format 96 997 01530 01 Rev C 25 Jan 2008 F111 lt S gt lt RATE gt lt CR gt lt LF gt Or F111 lt S gt PPO lt S gt lt START gt lt S gt lt STOP gt lt CR gt lt LF gt Where F ASCII character F 111 Function number PPO ASCII charact
59. R gt lt LF gt Time Interval display continues until function termination with Ctrl C Or example F110 TIET EVENT CR XL GPS responds OK lt CR gt lt LF gt ddd hh mm sS XXXXXXXXX lt CR gt lt LF gt Event Timing display continues until function termination with Ctrl C F110 responds F110 TIET OPTION IS NOT ENABLED to any of the commands above if the TIET option has not been enabled by the operator using the F126 Options Key Entry command 997 01530 01 Rev C 25 Jan 2008 95 F111 J2 Output Rate PPO Use function F111 to configure the J2 Output to generate one of several rates or optionally a Programmable Pulse Output PPO F111 selects from one of the following rates 1 PPS 10 PPS 100 PPS 1 kPPS 10 kPPS 1 MPPS 5 MPPS 10 MPPS or PPO The default factory setting is 10 MPPS Note PPO is an optional feature If purchased at the same time as the XL GPS it comes enabled on the system To purchase this option after you have purchased the XL GPS contact Symmetri com Sales See H Sales and Customer Assistance on page 143 For J2 specifications see J2 Rate Out on page 5 or J2 Optional Programmable Pulse Out PPO on page 6 Notes on F111 PPO PPO can provide a single pulse output or repetitive pulse outputs PPO can start and stop the pulse at any time in the year with a resolution of one microsecond The repetition rates from PPO are based on wildcards See Repetitive PP
60. S Therefore it is very important to select the best possible antenna site and follow the recommendations in sections Installing the GPS Antenna on page 13 and GPS Antenna OK or Open The GPS antenna is powered by a 12 volt current from the ANTENNA connector on the rear of the XL GPS If this circuit is complete e g connected to an antenna GPS Antenna status is OK If the circuit is incomplete e g no antenna a cable break or a splitter the GPS Antenna status is Open If circuit detects a short the receiver opens a relay to disconnect power from the circuit and the GPS Antenna status is Open GPS Acquisition State In Time Mode The system has been instructed by the user that its position will remain in a static location and has set the GPS mode to Time Mode See F53 GPS Operation Mode on page 55 e Start Site Survey The receiver is checking for changes in its saved static position occurs after boot e Survey Position If the save static position is determined to be invalid the receiver begins to 106 997 01530 01 Rev C 25 Jan 2008 reestablish its current most accurate position Position Hold The receiver has determined its most accurate position and is using this static position to calculate its most accurate time solution e Start TRAIM for Time Receiver Autonomous Integrity Monitoring The receiver is in Position Hold and is monitoring the integrity of the time solution using redundant satellite meas
61. ST specify ST command CR inputline terminator XL GPS responds F100 lt S gt ST lt S gt FLASH CRC lt S gt lt STATUS gt lt S gt RAM lt S gt lt STATUS gt lt S gt SERIAL lt S gt lt STATUS gt lt S gt NVRAM lt S gt VER lt S gt lt STATUS gt lt CR gt lt LF gt 82 997 01530 01 Rev C 25 Jan 2008 where F ASCII character F 100 Unit function number lt S gt Space ST Specify ST command FLASH CRC Specify flash checksum result RAM Specify RAM test result SERIAL Specify Serial Port test result NVRAM VER Specify version test result This test compares the version of the code against the version recorded in Non Volatile memory STATUS Is either ASCII PASS or FAIL r ASCII comma ASCII colon lt CR gt lt LF gt Output line terminator An example of the response is F100 ST FLASH CRC PASS RAM PASS SERIAL PASS NVRAM VER PASS lt CR gt lt LF gt F100 BH Burn Host Use function F100 BH when upgrading firmware to select the FTP host and the file to be transferred To select the FTP host and file for upgrading enter F100 BH FTP HOST IP ADDRESS gt lt S gt lt UPGRADE FILE PATH gt lt FILE NAME gt lt CR gt Use UNIX style forward slashes in path and do not describe the drive for example C in the path For example F100 BH 10 1 7 20 symmetricom XL GPS 192 8001 bin CR XL GPS responds BURN HOST IS READY lt CR gt lt LF gt F10
62. ST The factory setting for F66 is Manual i e DST On The hour for entering leaving DST is given in the 24 hour format Entering leaving DST can be scheduled for any hour of the day any day of the year However transitions scheduled within 24 hours of the beginning end of the year may not occur at the desired time This function also works for locations in the southern hemisphere where DST spans the new year 58 997 01530 01 Rev C 25 Jan 2008 Command Line To display the current status of F66 enter a command using the following format F66 CR F66 responds using the following format F66 lt S gt lt STATE gt lt ENTER EXIT gt lt CR gt where F ASCII character F 66 function number S ASCII space character one or more STATE Offor Manual lt ENTER EXIT gt If lt STATE gt is Manual lt ENTER EXIT gt are the dates it enters and exits DST CR carriage return character lt LF gt line feed character For example to disable DST enter F66 Off lt CR gt F66 responds OK lt CR gt lt LF gt To enable DST and set the DST entry and exit times use the following format F66 MANUAL lt INHOUR gt lt SEP gt lt INWEEK gt lt SEP gt lt INDAY gt lt SEP gt lt INMONTH gt lt SEP gt lt OUTHOUR gt lt OUTWEEK gt lt SEP gt lt OUTDAY gt lt SEP gt lt OUTMONTH gt lt CR gt 997 01530 01 Rev C 25 Jan 2008 59 where lt INHOUR gt
63. View network port setting 10 or AUTO Remote Lockout Enables or disables remote access through the XL GPS s standard network port Enabling Remote Lockout limits users to the front panel keypad or Serial I O port Flash CRC Status Passed or failed RAM Status Passed or failed Serial Status Passed or failed Version Test Status Passed or failed 74 997 01530 01 Rev C 25 Jan 2008 The following table gives the command line equivalents for each of the preceding parameters Description F100 followed by Ethernet address EA MAC address IP Address IP Subnet Mask SM Default Gateway G IP Address Subnet Mask IC and Default Gateway 10 100 BASE T BASET Remote Lockout L for status LOCK UNLOCK Flash CRC ST RAM ST Serial ST Version Test ST NVRAM Ver Group 2 Comments Displays information Displays configures and reboots Displays configures and reboots Displays configures and reboots Displays several IP parameters Displays network port setting Displays and configures Displays information Displays information Displays information Displays information The following expanded command set is available through the command line interface Description Burn Host BH Burn BU Burn Bootloader BUB Burn Filesystem BF Configure NTP amp SNMP Parameters CONFIG Factory Mode Jumper J Reboot KILL Change User Password P Ping PI Change User Name PN F100 followed by Comm
64. XL GPS and enter the commands below Replace lt P Address with that of the workstation FTP Server Leave subdir blank unless you have a specific reason for placing the files in a subdirectory of the anonymous user s home directory To get the NTP config files type gt 100 config ntp get host IP Address dir lt subdir gt lt CR gt To get the SNMP config file type gt 100 config snmp get host IP Address dir lt subdir gt lt CR gt To get both the SNMP and NTP config files type gt 100 config ntp snmp get host IP Address dir lt subdir gt lt CR gt Here s an example of a successful SNMP and NTP config file transfer gt f100 config ntp snmp get host 192 168 0 1 dir Host config ip 192 168 0 1 already configured Source file config snmp conf bytes read 1275 Dest file snmp conf bytes written 1275 Source file etc ntp conf bytes read 1166 Dest file ntp conf bytes written 1166 Source file etc ntp keys bytes read 44 Dest file ntp keys bytes written 44 Configuration files transferred successfully Note The following steps cause the XL GPS to reboot Using the command line enter the commands replacing P Address with the workstation FTP server s IP address To move the NTP config files back onto the XL GPS type gt 100 config ntp set host IP Address dir lt subdir gt lt CR gt 997 01530 01 Rev C 25 Jan 2008 87 To move the SNMP config file back onto the XL GPS type gt
65. acing the character you want to remove with an X Fl1 SEP DDD HH MM SS mmmQ CR F11 does not control the lt SOH gt CR or lt LF gt in the F8 and F9 output strings SEP is only one character wide either a space comma or tab Any character other than an upper case X in a numeric position does not affect the output of that position The colons or decimal point however may be replaced with any single ASCII character except null Hex 00 carriage return or line feed For example to check the current F11 settings enter F11 lt CR gt XL GPS replies F11 DDD HH MM SS mmmQ lt CR gt lt LF gt Then apply a new time output format by entering for example F11 XXXXXXXMMMSSS mmmX lt CR gt XL GPS responds OK lt CR gt lt LF gt With the above settings F8 displays lt SOH gt 12M34S lt CR gt lt LF gt With the above settings F9 displays lt SOH gt 12M34S 567 lt CR gt lt LF gt The new time format above suppresses the days the first colon and hours It replaces the second and third colons with M and S respectively And it suppresses the time quality character If you end the first part of a format string early with a carriage return the remaining un typed characters are enabled and assume their default values For example if you enter F11 lt TAB gt XxXxX lt CR gt 997 01530 01 Rev C 25 Jan 2008 47 XL GPS responds OK lt CR gt With the above settings F8 displays lt SOH gt 10
66. acter F 100 unit function number lt S gt space P specify Password command CR input line terminator XL GPS responds ENTER NEW USER PASSWORD When you enter the new password XL GPS responds CONFIRM NEW USER PASSWORD Enter the same new password again to confirm the spelling If the same new password has been entered twice XL GPS responds OK lt CR gt lt LF gt In this case the new password will be used for the next login However if the new password is entered differently the second time XL GPS responds ERROR PASSWORDS DO NOT MATCH NEW PASSWORD REJECTED 90 997 01530 01 Rev C 25 Jan 2008 F100 PI PING Use function F100 PI to ping a remote host to see if it is reachable If no IP Address is provided F100 PI uses the XL GPS s own IP Address and tests whether the XL GPS s network port has a good network connection To ping a known host enter F100 PI lt S gt lt IP Address gt lt CR gt For example F100 PI 206 254 000 021 lt CR gt The unit responds example PING 206 254 000 021 REMOTE HOST FOUND lt CR gt lt LF gt or PING 206 254 000 021 REMOTE HOST NOT FOUND lt CR gt lt LF gt To test if the XL GPS s network port has a good connection enter the following using in a serial port session gt 100 PI lt CR gt XL GPS responds PING REMOTE HOST FOUND lt CR gt lt LF gt or it responds
67. ail group as addition system objects are defined Glossary of SNMP Related Terms Depreciation In SNMP when an SNMP variable or group of variables is no longer recommended for use they are listed as deprecated in the formal definition of the MIB Users are often times still allowed to use this data but the MIB s authors for one reason or another no longer recommend it Enterprise MIB See Private Enterprise MIB IANA Internet Assigned Number Authority This is the group at IETF that is in charge of assigning Internet related numbers like Ethernet addresses TCP UDP port numbers and SNMP Private Enterprise MIB numbers IETF Internet Engineering Task Force The group responsible for standardizing numerous Internet communication protocols Management agent An Internet connected remote host that accumulates the raw data that is entered into the MIB and Enterprise MIB for that host This data is at some point transmitted to a Management station In other network applications this would be called a network server of the SNMP protocol Management station An Internet connected remote host that consumes SNMP data provided by a Management agent for the display of human network managers In other network applications this would be called a client of the SNMP protocol MIB Management Information Base This is the data structure for the SNMP protocol The current version of this standard that is in general use is MIB II defined by RFC s 1
68. al ports session concurrently provided the other session is inactive i e not actively performing a function such as F8 Continuous Time Once per Second The XL GPS does not allow two or more concurrent network port sessions A network port session can be used while a serial port session is open However if the serial port session receives user input at this point it takes control away from the network port and does not yield control to the network port again The network port will show a prompt but will not accept additional commands after the serial port has taken control back At this point closing the network port connection and opening a new one will also fail a network port connection cannot be re established until the serial port has been closed The following transcripts show the results of a contest between a serial and a network port session Serial port session gt f100 ic f100 IP 192 168 46 150 SM 255 255 255 0 G 192 168 46 1 gt NOTICE A NEW TELNET SESSION HAS BEEN STARTED ON THE INTERNET PORT gt f100 ic NOTICE THERE IS ALREADY A TELNET SESSION ON THE INTERNET PORT NOTICE YOU HAVE TAKEN CONTROL AWAY FROM THE TELNET SESSION 30 997 01530 01 Rev C 25 Jan 2008 f100 1P 192 168 46 150 SM 255 255 255 0 G 192 168 46 1 gt f100 ic f100 1P 192 168 46 150 SM 255 255 255 0 G 192 168 46 1 Network port session
69. all units involved 5 the adequacy of containers packaging and labeling of the product or products 6 the conformity of the product promises or affirmations of fact if any made on its label or container and 7 the conformity of the product to standards of quality observed by other merchants in the trade with respect to products of similar description 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 result 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 997 01530 01 Rev C 25 Jan 2008 vii Proprietary Notice This document whether patentable or non patentable subject matter embodies proprietary and confidential information and is the exclusive property of Symmetricom Inc It may not be reproduced used or disclosed to others for any purpose except that for which it is purchased or loaned Abut this Manual This manual is subject to change without notice Symmetricom can not be held responsible for any errors or inaccuracies in this manua
70. andard ote eae E PO 4 RS 232 RS 422 Interface 0 0 ee eee 4 Network Port 1OMOG 2 9 sedi d ee at s ute Edi CU DE Vw S La E 5 JODIO HET ap wees dv epos ob ud aux d A aw Fd 5 J2 Rate Qut siieu ele i e a cal aa a aa a ote a als E cos 5 J2 Optional Programmable Pulse Out PPO ococccccccooo o 6 J3 Optional Frequency Measurement Lll 6 MEI OU 3552 r quts whiny Sek re Gaude deis SEL Dee 6 Ode UE Sc 31424 Sk ro AS ur iiti na rec cag Seen cm datu dia foci a Mos dte ur NS 7 Pe cnp PIX sas ls ea ar hee erpupcr O 7 GPS Time and Frequency Reference 0 0c cece cece eens 8 OPUONS atrio aaa dot wi ol di bie Bpod o e daa o ane e ecd tate c 8 Expansion Module 87 8034 52 034 REL Ree ERR REoOPRRE Ee 8 Is Code Out eoosectouc enu bie Pee EAE E Ae 9 A ded e WR Ind d NER S RR ATE E A eth a 9 FRAC S Lato e Pd ne ae dul a a dad eer itera 9 Optional Programmable Pulse cies II 9 Optional Alam Relay c4 c 4 44459442802 226 Cowes Gee wee e 9 A A O 9 AAA A A PD A 11 Standard TOVEXAO etc re aae rs o bla 11 Optional OCXO a daa daa aaa 11 Certification 125922095 a A AS A Od eT is 11 Calibration Statement ot sia ea A oa eae AS 11 Volatiit Statement lt a A NM sada RENS 12 997 01530 01 Rev C 25 Jan 2008 3 Installation Configuration 00 0c eee eee 13 Installing the GPS Antenna 2 2 5 2 50022 cee ee eee 13 Selecting a GPS Antenna Site Outdoors
71. andons the changes and displays the Status Display Other ways to abandon new settings in a function Press Result CLR Abandons all changes and displays to the first screen in the function TIME Abandons all changes exits the function and displays the Time Display STATUS Abandons all changes exits the function and displays the Status Display 28 997 01530 01 Rev C 25 Jan 2008 To enter numeric values in a function Press Result ENTER Displays the FUNCTION prompt 3 Enters 3 as the function number ENTER Opens Function 3 displays the first screen TIME MODE LOCAL ENTER Displays the second parameter DATE TIME lt mm gt lt dd gt lt yyyy gt 05152002 Enters May 15 2002 as today s date replace ENTER Displays DATE TIME ENTER XL GPS asks SAVE CHANGES YES ENTER Selects YES saves the changes and displays the Status Display Command Line Interface To open a command line session connect to the serial or network port using a terminal or a terminal emulation program on a PC Consult 5 Function Reference on page 32 for information on the function commands Logging In Two user names are available for logging in to the network port s command line interface operator and guest The serial port s command line interface does not require the user to log in Operator Login The Operator has full privileges to change the settings in all the XL
72. ansmitting information that it has been removed from service e Rejected the XL GPS M12 receiver s TRAIM feature has detected anomalous signals from this satellite and has quarantined it from the timing solution for 12 hours GPS satellite signal strengths are reported in units of dBW Signals below 170 dBW e g 171 dBW are not usable by the GPS receiver See GPS Signal Strength Requirements on page 15 If you re using the keypad interface use the UP DOWN ARROWS to scroll through the list of satellites Command Line Use Serial Function F60 to request a list of all current and tracked satellites To display the list enter a string using the following format F60 lt S gt lt TYPE gt lt CR gt XL GPS responds with approximately 32 lines that use the following format F60 lt S gt prn lt NN gt lt S gt lt STATE gt tracked current lt LEVEL gt lt CR gt lt LF gt where F60 ASCII string indicating function F60 lt S gt ASCII space character one or more B ASCII letter to denote Option Bay number follows lt N gt Option Bay Number 1 through 10 lt SEP gt One or more separator characters either space comma or tab TYPE ALL CURRENT TRACKED BAD or REJECTED CR Carriage return character prn Pseudo Random Number NN 1 through 32 prn lt NN gt identifies specific GPS satellites STATE Good Bad or Unknown tracked Either tracked or blank current
73. aracter one or more lt STATE gt ENABLE or DISABLE lt CR gt carriage return character LE line feed character For example to display the Keypad Lock status send F6 lt CR gt XL GPS responds F6 DISABLE lt CR gt lt LF gt To enable Keypad Lock send the following string F6 ENABLE lt CR gt XL GPS responds OK lt CR gt lt LF gt To disable Keypad Lock send the following string F6 DISABLE lt CR gt XL GPS responds OK lt CR gt lt LF gt FS Continuous Time Once per Second Note This function is available through the command line interface only it is not available through the keypad F8 generates time of year information e g 199 10 41 08 once per second over the XL GPS s command line interface which is available from the standard network port or the serial port The format and type of time can be modified using F2 F11 and F69 If F8 is used following startup while the XL GPS is acquiring a reference source F8 s displays time of year information from the XL GPS s unsynchronized system clock When the system clock acquires a 42 997 01530 01 Rev C 25 Jan 2008 reference source and synchronizes with it F8 displays the new time of year information The transition looks like this 3651 365 365 365 199 199 164 16 16 16 133 133 00 14 00 15 00 16 00 17 56 03 56 04 In the first two lines above the unsynchronized time is followed by a time quality
74. ast significant digits a pulse either starts or stops For example the following string produces a pulse at midnight every day with a 1 in the least significant digit F111 PPO XX1 00 00 00 000000 XX1 00 00 01 000000 lt CR gt 98 997 01530 01 Rev C 25 Jan 2008 Clock Reading Pulse 001 00 00 00 000000 Start 001 00 00 00 000001 No Change 001 00 00 01 000000 Stop 001 01 00 00 000000 No Change 001 00 00 00 000000 Start etc For example to produce a repetitive 5 microsecond pulse occurring every 10 microseconds i e repetitive pulses with 100 kPPS frequency with the start time or rising edge on time and the stop time or falling edge at 5 uS or 10 uS pulse period with 5 uS pulse width enter F111 PPO XXX XX XX XX XXXXX0 XXX XX XX XX XXXXX5 CR XL GPS responds OK lt CR gt lt LF gt Or for example to produce a repetitive 50 microsecond pulse occurring every 100 microseconds i e repetitive pulses with 10 kPPS frequency with the start time or rising edge at 5 uS and the stop time or falling edge at 55 uS or 100 uS pulse period with 50 uS pulse width enter F111 PPO XXX XX XX XX XXXX05 XXX XX XX XX XXXX55 lt CR gt XL GPS responds OK lt CR gt lt LF gt Or for example to produce a repetitive 50 microsecond pulse occurring every 100 milliseconds i e repetitive pulses with 10 PPS frequency with the start time or rising edge at 5 uS and the stop time or falling edge at 55 uS or 100ms pulse period with 50 uS pul
75. at F53 lt SP gt lt SEP gt lt STATUS gt lt CR gt lt LF gt 997 01530 01 Rev C 25 Jan 2008 55 where F ASCII character F f or F for input string 53 the function number SP ASCII space character one or more SEP one or more space characters STATUS DYNAMIC MODE or TIME MODE CR carriage return character lt LF gt line feed character For example enter F53 lt CR gt Example response F53 TIME MODE or DYNAMIC MODE lt CR gt lt LF gt To set the GPS Operation Mode enter a command using the following format F53 lt SP gt lt MODE gt lt CR gt where MODE equals DYNAMIC MODE or TIME MODE For example enter F53 TIME MODE lt CR gt Or F53 DYNAMIC MODE lt CR gt F53 responds OK lt CR gt lt LF gt F60 GPS Receiver Satellite List Use function F60 to display the identification number and signal strength of tracked or current satellites Tracked means a satellite s signal is being received and interpreted by the receiver or that the XL GPS has GPS data that suggests this satellite should be visible to the antenna GPS satellite are grouped into the following categories e Tracked the XL GPS is receiving the GPS signal but isn t using it to calculate time and position 56 997 01530 01 Rev C 25 Jan 2008 Current the XL GPS is using the satellite s GPS signal to calculate time and position Bad the GPS satellite is tr
76. aultClockLockStatus 2 faultO scillatorT uning Bon OANDAARWNDH system Fault system Fault ConfigData ConfigMasks ze 2 configDataLatch rd m askPIIS ynthesizer 2 4 09 configDataLatchClear 2 maskLpnPll 2 configDataThreshold 3 maskPrimaryGPS 3 configDataTimeout 4 maskSecondaryGPS 4 configDataPowerOn 5 maskIRIG 5 Suppress maskAuxRef 6 maskPrimaryPower 7 maskSecondaryPower 8 maskRbOsc 9 maskTimeErrorThreshold 10 maskClockLockStatus 11 maskOscillatorTuning 12 Note For the figures in this chapter substitute xlgps for xli The XL GPS systemAlarmData group defines SNMP traps and cannot be directly retrieved by the SNMP manager When a system alarm event occurs an SNMP trap alarmSystemNotification is sent to the SNMP managers previously configured to receive traps Included in the trap message are the variables contained in the systemAlarmData group IP address timestamp alarm code and the F73 status string 997 01530 01 Rev C 25 Jan 2008 127 The systemFaultConfig sub group contains parameters to control the generation of system alarms The timeout threshold and power on suppress values are contained in the systemFaultConfigData group Also in this group is a method object configDataLatchClear By setting this object the user clears all latched faults Reading the configDataLatchClear object has no effect and its value is not defined The
77. ble for up to 13 minutes See F119 GPS Receiver Configuration on page 104 GPS Shows that the clock is locked to GPS UTC Time display mode GPS UTC Standard or Local F69 Time Mode on page 61 200 21 24 09 2002 The time in DDD HH MM SS YYYY format See Time Display on page 25 LOCKED Menu Display To use the XL GPS functions that are available from the keypad press the MENU button on the keypad Eunction Summary on page 32 lists which functions are available from the Menu Display Pressing the MENU key on the front of the XL GPS displays the first function F1 TIME ZONE OFFSET Fl TIME ZONE OFFSET 26 997 01530 01 Rev C 25 Jan 2008 Pressing the UP ARROW key increments to the next function F2 12 24 HOUR FORMAT and so on Pressing the DOWN ARROW key skips to the highest available function F126 OPTIONS KEY ENTRY and from there decrements through the functions The section 5 Function Reference on page 32 provides detailed information on all of the XL GPS s functions Keypad Operation Use XL GPS s front panel keypad to operate the menu driven keypad interface o o 9o GD OD 0090090 o9 9 9 MENU The following table explains how the individual keys work UP ARROW Increase value Display next choice above DOWN ARROW Decrease value Display next choice below RIGHT ARROW Move cursor right LEFT ARROW Move cursor left 0 9 Enter numeric va
78. charged the then current field service rate for portal to portal travel time plus actual portal to portal travel charges There is no charge for on site warranty repair labor Products not manufactured by Symmetricom but included as integral part of a system e g peripherals options are warranted for 90 days or longer as provided by the original equipment manufacturer from date of shipment Aside from the Limited Warranty set forth above Symmetricom makes no other warranties express or implied of merchantability fitness for purpose or of any other kind or description whatsoever By purchasing any product manufactured by Symmetricom the buyer consents to and agrees with Symmetricom that as a result of the exclusion of all warranties expressed or implied of merchantability fitness for purpose or otherwise except for the limited one year warranty for defects in material and workmanship for products manufactured by Symmetricom that the Buyer has the sole responsibility to assess and bear all losses relating to 1 the ability of the product or products purchased to pass without objection under the contract description among merchants and buyers in the trade 2 the conformity of the product or products to fair average quality within its contract description 3 the fitness of the product for the ordinary purposes for which such product is used 4 the consistency of quality and quantity within each unit of product or products and among
79. comEnt gt products gt xlGps gt xIGpsSystem gt systemStatus gt systemStatusGeneral Select all items under systemStatusGeneral Do this by clicking on the first item and then holding the shift key while clicking on the last item Then click the Add button Back up to xIGps gt xIGpsSystem gt systemStatus gt systemStatusDetail Select all items under systemStatusDetail and then click the Add button Then click the Close button 10 Inthe New Application Builder Display Fields popup click the Next button In the Menu Path field enter xIGps Status Click the Finish button 11 Repeat steps 6 10 using the Application ID of xIGpsConfig selecting all items under iso gt org gt dod gt private gt enterprises gt symmetricomTtm gt products gt xlGps gt xIGpsSystem gt sys temFault gt systemFaultConfig and using the Menu Path of xIGps gt Configuration 12 Repeat steps 6 10 using the Application ID of xIGpsFault selecting all items under iso gt org gt dod gt private gt enterprises gt symmetricomTtm gt products gt xlGps gt xIGpsSystem gt sys temFault gt systemFaultHistory and using the Menu Path of xIGps gt Fault History 132 997 01530 01 Rev C 25 Jan 2008 Additional OpenView configuration 1 Select the menu item Options gt SNMP Configuration A popup titled SNMP Configura
80. command reboots your unit You have completed the firmware upgrade procedure Troubleshooting Most problems upgrading the firmware are due to problems with the configuration of the FTP server such as setting the server to accept a null password configuring the anonymous home directory setting the correct access rights entering the correct relative file path The following error messages may provide some indication of the underlying problem 997 01530 01 Rev C 25 Jan 2008 121 Message gt Can t set the burn host wrong IP address Cause The IP address entered for the FTP server is incorrect Check that you ve entered the IP address of the FTP server not the XL GPS and re enter if necessary Message gt Can t open file 192 Cause There s a problem with the FTP server that is preventing access to the file Verify the following The FTP server is correctly configured The anonymous user account is enabled The anonymous user account password is guest The anonymous user account has read access to the ftpworkfiles directory The ftpworkfiles directory located in the anonymous user s home directory The FTP server is running There aren t any other anonymous users logged into the FTP server Try connecting to the FTP server as anonymous using an FTP client You should automatically see the product name directory e g XL GPS you created inside the anonymous users home dire
81. cter lt SEC gt two digit seconds plus one digit 10ths of seconds ASCII character For example LATITUDE N38 23 53 2 or LONGITUDE W122 42 53 0 Altitude Mode is available in Meters only Altitude is displayed in meters above or below the WGS 84 ellipsoid Command Line Use the following format to display the current settings display the current position for the GPS receiver in LLA coordinates F50 lt S gt LLA lt CR gt XL GPS responds with the coordinate information in the following format F50 lt S gt lt SIGN gt lt S gt lt DEG gt d lt MIN gt lt SEC gt lt S gt lt SIGN gt lt S gt lt DEG gt d lt MIN gt lt SEC gt lt S gt lt ALT gt lt UNITS gt lt CR gt lt LF gt 50 997 01530 01 Rev C 25 Jan 2008 where F50 S SEP LLA CR SIGN DEG MIN SEC ALT UNITS LE Function 50 ASCII space character one or more Separator LLA mode carriage return character N or S for latitude E or W for longitude for negative altitude and lt S gt or for positive altitude two digit degrees for latitude or three digit degrees for longitude ASCII character d two digit minutes ASCII character two digit seconds 1 digit 10ths of seconds ASCII character altitude in meters unit of altitude m for meters line feed character For example to display the LLA coordinates of the anten
82. ctory e g c ftpworkfiles Open the product name directory You should see the firmware upgrade files you put there If either the product name directory or the firmware upgrade files aren t visible there s a problem with the FTP configuration Message Wrong File type You may be using the wrong firmware files for the product being upgraded This may be due to the incorrect files being place in the upgrade directory It may also be that the wrong directory was entered one for another product in the path information on the F100 command line Wrong file type is also associated with Can t open file errors see the preceding message Message Unit hangs on Burning Boot message Check that your IP Address Subnet Mask and Default Gateway of the XL GPS are correctly configured FAQ How does one check the unit s firmware version number Log on to the XL GPS and enter the following command F100 VER 122 997 01530 01 Rev C 25 Jan 2008 An example XL GPS response is F100 VER BOOTLOADER 192 8000 SOFTWARE 192 8001 FILE SYSTEM 192 8002v1 80 NVRAM VER 5 PROJ REV 11 80 The PROJ REV number is the firmware version number The v number in FILE svsTEM is the file system version number which may not be the same as the firmware version number How does one check the IP address subnet mask and default gateway of the XL GPS Log on to the XL GPS and
83. dance Freq Meas Interval 1 to 99999 seconds The factory settings are 10 MHz and 1kQ Frequency Measurement Freq Meas Input The Frequency Measurement Freq Meas option measures an external frequency applied to the J3 input relative to the disciplined XL GPS oscillator Operation Measurements are displayed on the front panel display and on the command line at the specified measurement interval The front panel displays the measured frequency offset FREQ OFFSET and a countdown COUNT to completion of the measurement interval The command line states the measurement interval e g Interval is 1 seconds on the first line and then starts displaying each measurements each one on a new line Limitations Note that the accuracy of the frequency measurement is based on the accuracy and stability of the disciplined XL GPS oscillator over the measurement interval Short interval measurements of external very high stability oscillators e g Cesium tend to measure the XL GPS oscillator instead Refer to Time and Frequency Accuracy on page 3 and to Oscillators on page 11 for more information for the specifications of disciplined oscillators while locked to a GPS reference source 100 997 01530 01 Rev C 25 Jan 2008 Theory of Operation Freq Meas uses a heterodyne phase error multiplier to achieve high resolution at short sample periods Using its internal disciplined frequency the XL GPS records or timestamps the zero crossing o
84. delimiter L Locked U Unlocked ASCII character P static character does not indicate status PLL Synthesizer Locked C PLL Synthesizer Unlocked not used GPS OK P GPS Fault not used not used not used not used not used Rb osc OK or not installed R Rb osc Fault 997 01530 01 Rev C 25 Jan 2008 DAC OK X DAC Fault B First time lock OK pi a Clock has locked since power on but still within the user defined power on time out A Clock has not locked since power on E Time error OK U Time error Fault Timeout OK T Timeout Fault NTP OK or option not enabled N NTP Fault Future Use iw E Future Use a Future Use Future Use H Future Use q To display the latched faults enter F73 LATCH The XL GPS responds in the following format F73 lt SP gt LATCH lt SEP gt lt 12345678 9ABCDEFGHIJ gt lt CR gt lt LF gt The values in lt 123456789ABCDEFGHIJ gt field indicate the latched faults if any which have occurred since the last time Alarm Latch was cleared To clear the Alarm Latch enter F73 CLEAR ALARM LATCH lt CR gt lt LF gt The XL GPS clears Alarm Latches and responds OK lt CR gt lt LF gt The user can enable or disable the alarm indicators using the MASK command To display the current mask enter F73 MASK The XL GPS responds in the following format F73 lt SP
85. do so by a qualified Symmetricom technician To test the state of the factory mode jumper F100 lt S gt J lt CR gt where F ASCII character F 100 unit function number lt S gt space J specify User Name command CR input line terminator 88 997 01530 01 Rev C 25 Jan 2008 XL GPS responds F100 J FACTORY MODE 1 lt CR gt lt LF gt or F100 J FACTORY MODE 0 lt CR gt lt LF gt F100 K I L L Reboot Use function F100 K I L L to reboot the unit Use F100 K I L L after upgrading the system firmware KILL is a case sensitive command When entering this command use all capital letters and put spaces between each letter To reboot the unit enter F100 K lt S gt I lt S gt L lt S gt L lt CR gt For example F100 K I L L lt CR gt XL GPS responds OK lt CR gt lt LF gt RESETING THE UNIT lt CR gt lt LF gt PLEASE WAIT lt CR gt lt LF gt In a network port session rebooting the XL GPS terminates the network port session open a new network port session when the XL GPS has finished rebooting In a serial port session the XL GPS displays text similar to the following example when the XL GPS has finished rebooting and is ready to receive additional commands gt SYSTEM POWER ON SELF TEST RESULTS SERIAL LOOPBACK TEST PASSED RAM TEST PASSED PROG CRC TEST PASSED NETWORK INTERFACE 192 8001 c 1998 2003 SYMMETRICOM A E E
86. e Default Gateway To set the Default Gateway and restart the unit enter F100 lt S gt G lt S gt lt nnn nnn nnn nnn gt lt CR gt 78 997 01530 01 Rev C 25 Jan 2008 where F ASCII character F 100 unit function number S space IP specify IP command nnn nnn nnn nnn dotted decimal address 0 to 255 CR inputline terminator For example enter F100 G 206 54 0 17 CR XL GPS responds O K lt CR gt lt LF gt RESETING THE UNIT lt CR gt lt LF gt PLEASE WAIT lt CR gt lt LF gt To obtain the Default Gateway of the unit Standard network port enter F100 G lt CR gt XL GPS responds F100 G lt nnn nnn nnn nnn gt lt CR gt lt LF gt where lt nnn nnn nnn nnn gt is the dotted decimal address notation An example of the response is F100 G 206 54 0 1 lt CR gt lt LF gt F100 IC Network Port Settings Use function F100 IC to review the entire configuration of the standard network port enter F100 lt S gt IC lt CR gt An example of the response is F100 1P 206 54 0 21 SM 255 255 255 240 G 206 54 0 17 lt CR gt lt LF gt F100 BASET 10 100 BASE T The BASET command displays the data rate of the Ethernet port On the current version of the Main CPU card 87 8000 running the current system software version the user also has the option of 997 01530 01 Rev C 25 Jan 2008 79 selecting between 10 Base T and Auto If you have questions about your unit contac
87. e XL GPS outputs four 997 01530 01 Rev C 25 Jan 2008 39 corresponding time quality characters in text outputs of F8 and F9 See F8 Continuous Time Once per Second on page 42 and F9 Time On Request on page 44 In addition a time quality indicator is encoded in outputs of the IRIG B AM or DC Expansion module see F90 Code Output Configuration on page 72 For more information on time quality indicators see IRIG Standard Format A on page 140 The XL GPS accepts threshold values from 200 nS to 40000000000 nS The factory settings for F5 are as follows Time quality reporting enabled First time quality flag 1 000 ns Second time quality flag 10 000 ns Third time quality flag 100 000 ns Fourth time quality flag 1 000 000 ns Related topics Time Error F13 Time Error on page 48 displays the current time error F71 Oscillator Statistics on page 62 provides the DAC value Command Line To determine if the time quality characters are enabled and what the thresholds are enter F5 lt CR gt XL GPS responds F5 lt S gt lt STATE gt lt SEP gt lt FLAG gt lt SEP gt lt FLAG gt lt SEP gt lt FLAG gt lt SEP gt lt FLAG gt lt CR gt lt LF gt where F ASCII character F 05 function number lt S gt ASCII space character one or more lt SEP gt one or more separator characters either space comma or tab lt STATE gt ENABLE or DISABLE FLAG one e
88. e brightness of the display on the XL GPS s front panel View some of the factory settings such as the serial number or NTP state Configure and display status for the GPS M12 Receiver card 87 8028 2 Enable an XL GPS option by entering a software key Use function F1 to display and set the time zone offset between your Standard Time zone and Universal Time Coordinated UTC Refer to F World Map of Time Zones on page 141 F1 is the basis for Standard Time and Local Time used by F69 For an expanded explanation of Local Standard UTC and GPS time see F69 Time Mode on page 61 For example to set the time zone for Pacific Standard Time UTC 8 hours set the value in F1 to 08 00 Do not include the 1 hour Daylight Saving Time DST offset in this value DST is handled separately by F66 Daylight Saving Time DST Mode on page 58 Because the front panel display can be configured to display distribute Local or Standard time we recommend configuring F1 as described in the 3 Installation Configuration on page 13 The factory setting for F1 is UTC 8 00 hours Pacific Standard Time Related topics F2 12 24 Hour Format on page 35 e F11 Time Output Format on page 46 Command Line To display the time zone offset send F1 lt CR gt XL GPS responds F1 lt S gt lt SIGN gt lt HH gt lt MM gt lt CR gt lt LF gt 34 997 01530 01 Rev C 25 Jan 2008 where F
89. ee Symmetricony XL GPS Time amp Frequency System User Guide 997 01530 01 Rev C January 2008 Notices Symmetricom Inc Timing Test 8 Measurement 3750 Westwind Blvd Santa Rosa CA 95403 1053 http www symmetricom com Copyright O 2006 Symmetricom Inc All rights reserved Printed in U S A All product names service marks trademarks and registered trademarks used in this document are the property of their respective owners The manual s contents do not apply to previously released versions of XL GPS hardware or software Table of Contents Preface unir A AA A EE m RE ERA RA vii Limited Warranty ausser rtt se ero Pee ne e ut on eie oe Ce vii Limitation of Liability s uo ee do Eod nbn heated Cn dE SE E e V ed vii Proprietary Notice oso ou oe eee SE MENSES RS viii ADU EIS MATUSIS e dox 0 essed ea aoo eatis ti ele Crap SS Yel e s aie ee viii Finding Answers to Product Questions 00 00 eee viii 1 Overview of the XL GPS Time and Frequency Receiver 1 Product Description and Features 0 0 ee ees 1 2 System Specifications x xo de do Macken ak he e e ea e RC Sce ale 3 Chasing e a aos Pad id a aa Da 3 Environmental usa ES A as A e Ce da a 3 Time and Frequency Accuracy s sou ue wie bonis 4 eae ausa aci RS Ro e 3 GPS Referente rare ud er RUE AO 3 AC Power SUDDIV ss ote bose e E OR deor tud Eu S o d rd Eden dard 4 IDE eorom a 44 par eR BC EXGX dap a ria re ee ee yemas 4 St
90. en locked F6 is the only function available from the keypad F8 Continuous Time Once per N S Output the time once per second to the command line Second F9 Time On Request NS Output the time when triggered to the command line F11 Time Output Format N S Change the format of the time output by F8 and F9 F13 Time Error K N S View the current estimated worst case time error F18 Software Version Request K N S View the XL GPS s software version information F50 GPS Receiver LLA XYZ Position K N S F51 GPS Antenna Cable Delay K N S F52 Distribution Cable Delay K N S F53 GPS Operation Mode K N S F60 GPS Receiver Satellite List K N S F66 Daylight Saving Time DST K N S Mode F69 Time Mode K N S 32 View the Latitude Longitude Altitude or geocentric X Y Z coordinates of one or more GPS antennas Compensate for the delay caused by the length of the GPS antenna cable Use F52 to adjust timing outputs Compensate for the length of the distribution cable on J2 Operate the GPS M12 Receiver in Time Mode in static applications or in Dynamic Mode for mobile applications View a list of current and tracked satellites Schedule when DST starts and ends Local time only Set the type of time GPS UTC Standard Local displayed on the front panel of the XL GPS 997 01530 01 Rev C 25 Jan 2008 F71 Oscillator Statistics F72 Fault Status F73 Alarm Control Statu
91. ence displaying Booting Loading and Starting After approximately 40 seconds the XL GPS displays the clock status and user interfaces front panel command line become available Configuring the Network Port The following additional steps are required to make the XL GPS operational on a network Make the XL GPS operational on a network if you plan on Managing the XL GPS remotely over the network Distributing timing information from the XL GPS over the network Press Result ENTER Displays FUNCTION 100 Enters 100 as the function number 16 997 01530 01 Rev C 25 Jan 2008 ENTER Displays Function 100 s first screen COMPANY 00 A0 69 ENTER Displays IP ADDRESS 1 9 Enter the unit s IP Address e g 192 168 0 11 ENTER Displays SUBNET MASK 1 9 Enter the Subnet Mask e g 255 255 255 000 ENTER Displays DEFAULT GATEWAY 1 9 Enter the Default Gateway s IP address e g 192 168 0 1 ENTER Displays 10 100 BASE T 10 ENTER Displays REMOTE LOCKOUT UNLOCK Leave unchanged ENTER 5 times Displays SAVE CHANGES YES ENTER Saves the new network parameters and reboots the XL GPS Notes To prevent remote network access to the XL GPS change Remote Lockout to LOCK Doing this shuts down remote access through the XL GPS s network port so that the XL GPS s functions are available only through the keypad inter
92. enter the following command F100 IC F100 IP 192 168 47 156 SM 255 255 255 0 G 192 168 47 1 Is the null modem cable necessary What if I m upgrading a XL GPS remotely The null modem cable is optional If you decide to Telnet to the XL GPS over TCP IP network you don t need the null modem cable I m using a null modem cable to connect to the XL GPS from my laptop and the XL GPS keeps rebooting An ungrounded voltage level on one of the pins in the null modem cable causes the unit to reset Use one of the following work arounds Connect the laptop to a grounded power supply if it has one or ground the laptop s chassis Do away with the null modem cable Telnet to the unit over the network Use a regular PC instead of the laptop The PC is connected to a grounded power supply and doesn t cause this problem 997 01530 01 Rev C 25 Jan 2008 123 C SNMP The mibs for this product are available on the product CD Key MIB config ttmib o Don t touch This is a factory setting GenTraps YES Global enable disable setting for all SNMP traps YES the default setting enables all traps NO disables all traps This setting overrides all the other TRAP parameter settings NAME The community name password This should be the same as the community name being used by the administrators VIND View Index This is a reserved term that has no effect and is currently unused in SNMP This parameter should be set to 1
93. ents Configure Commit action Commit action Commit action Move files Display only Commit action reboot the XL GPS Configure Commit action Commit action You can reconfigure two or more network parameters in a single entry by sending the F100 command and entering new values Leading zeros may be omitted when entering IP Address Subnet Mask and Default Gateway Any field may be omitted and order is not significant Blanks are allowed on either side of a colon The unit reboots after any network parameter is changed 997 01530 01 Rev C 25 Jan 2008 75 F100 EA Ethernet Address Use function F100 EA to display the Ethernet Address MAC Address Note An Ethernet or MAC Address is not the same thing as an IP Address a fixed six byte hexadecimal value specific to the unit s standard network port The first three bytes are registered to Symmetricom Inc the last three bytes are the hex value identifying the network port To display the Ethernet address of the unit standard network port enter F100 EA lt CR gt XL GPS responds F100 EA 00 A0 69 xx xx xx CR LF where 00 20 69 is the portion of the address assigned to the manufacturer and xx xx xx is unit s unique address in hexadecimal An example of the response is F100 EA 00 A0 69 99 00 37 Attempts to set this field will be rejected with a syntax error message F100 IP IP Address Use function F100 IP to display or change t
94. er service See H Sales and Customer Assistance on page 143 Clear Alarm Latch Use Clear Alarm Latch after troubleshooting or fixing the cause of an alarm so new alarms can be distinguished from previous ones About Alarm Latch The Alarm Latch shows if an indicator has triggered an alarm at any time since the last time the Alarm Latch was cleared even if the indicator is presently Locked or OK This feature is useful for finding and troubleshooting transient alarms F73 indicators must be enabled in order for alarms to occur and be latched The alarm latch does not record the occurrence of a fault or unlocked state if the indicator is disabled The Alarm Latch is visible as an asterisk when viewing F73 on the front panel display For example ENABLE 997 01530 01 Rev C 25 Jan 2008 67 Save Changes Yes Applies all user entered changes to the F73 configuration No Clears all user entered changes and exits the function Keypad Note The Alarm Latch asterisk is not the same as the reference source unavailable asterisk that can sometimes be seen on the STATUS display Command Line To query the status of F73 enter F73 CR F73 responds F73 lt SP gt S lt STATUS gt P lt SP gt lt 123456789ABCD gt lt CR gt lt LF gt where 73 lt SP gt S STATUS 0 Cc AN oO CO b 68 ASCII character F function number ASCII space character ASCII character S Status
95. er string PPO lt S gt ASCII space character one or more lt RATE gt Output rate or type RATE 1 PPS RATE 10 PPS RATE 100 PPS RATE 1 kPPS RATE 10 kPPS RATE 100 kPPS RATE 1 MPPS RATE 5 MPPS RATE 10 MPPS START amp STOP Time of year with microsecond resolution in the format of yyy hh mm ss uuuuuu Range 001 00 00 00 000000 366 23 59 59 999999 Note Wildcard character X or x can also be entered See the section regarding time string with wildcard character Colon separators are required lt CR gt lt LF gt Line terminator a carriage return and line feed for output strings or a carriage return for input strings Sample request F111 lt CR gt The XL GPS displays a fixed 10 PPS rate output example F111 RATE 10PPS lt CR gt lt LF gt Or displays the PPO settings example F111 PPO 120 22 56 12 000000 120 22 56 12 000003 lt CR gt lt LF gt Setting the J2 Output Configuration To set the J2 Output Configuration send a character string with the previously defined F111 entry format to the Serial Network port Only valid values are accepted The J2 Output Configuration can be set to specify one of several predetermined rates a single PPO pulse outputs and repetitive PPO pulse outputs The following sections provide examples and some explanations for each Predetermined RATE output For example to produce a fixed 100 kPPS rate output enter F111 RATE 100KPPS lt CR gt XL GPS respond
96. espond to inputs add a 1 ms character delay to the software s serial port settings Connecting to the Network Port The network port provides remote access to the XL GPS s command line interface Complete the following steps to connect to the network port 1 Use function F100 Network Port Configuration amp XL GPS Firmware page 74 or F100 IP IP Address page 76 to obtain the XL GPS s IP address 2 Open a telnet session from your PC to the XL GPS n Windows click Start Run enter telnet where the s are the XL GPS s IP address and click OK Open a telnet session using a program such as HyperTerminal TeraTerm Pro or Minicom Consult the program s documentation for instructions 3 Log in as user name operator and password Janus Press Enter on your keyboard to get a command prompt From the command prompt gt you can use the functions described in the Function Reference section of the XL GPS User s Guide and Reference Manual The Command Line sub sections provide instructions and examples Related topics t Configuring the Network Port on page 16 F100 Network Port Configuration amp XL GPS Firmware on page 74 F100 L LOCK UNLOCK Remote Lockout on page 80 997 01530 01 Rev C 25 Jan 2008 19 Installing the Expansion Module Warning Installing and removing the expansion module can expose dangerous voltages that can cause electric
97. et 4 cs Sara AR aA I Ra Circ esti vus didus aon eleg Mrd 139 iv 997 01530 01 Rev C 25 Jan 2008 F World Map of Time Zones 2000 eee eee eee eee eee 141 G Part Names usui dp ru aver e 142 H Sales and Customer Assistance eere 143 US Assistance Center lees 143 Customer ServiGe os n voie EM IOS elu px 143 Technical Support d La dec genre Reb eS RE bdo den dca 143 EMEA Assistance Center eee eee eee eee 143 Customer Service 0000 eee ee ee eae 143 Technical Support aireado inks a ara alae AE 143 INGOX EE E oe KR eer OG Sate eR ele ea E E EA az 145 997 01530 01 Rev C 25 Jan 2008 vi 997 01530 01 Rev C 25 Jan 2008 Preface 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 This one year Limited Warranty does not apply to any software or to any product not manufactured by Symmetricom If on site warranty repair or replacement is required the customer will be
98. etting XL GPS without expansion module Clock Status Locked Unlocked Always Enabled PLL Locked Unlocked Alarm Enabled GPS OK Fault Alarm Disabled DAC OK Fault Alarm Disabled 1st Time Lock OK Fault Alarm Enabled Time Error OK Fault Alarm Enabled Time Threshold Range 0 to 99 999 nS 0000 nS LED Blink n a Enabled Timeout OK Fault Alarm Enabled Timeout Delay Range 0 to 86 400 sec 300 sec Power On Alarm Suppress Range 0 to 86 400 sec 300 sec NTP OK Fault Alarm Enabled Clear Alarm Latch Yes No No Alarms General Information With Alarm Disabled an F73 indicator does not trigger and alarm when it enters an Unlocked or Fault state With Alarm Enabled an F73 indicator triggers an alarm when it enters an Unlocked or Fault state and the following events take place The Alarm Status LED changes color from green to amber or red See Alarm Status LED on page 25 The ALARM output on the rear panel changes from low Z to high Z impedance e f configured SNMP sends a trap out over the network port See C SNMP on page 124 The following items may delay an unlocked or fault state from triggering an alarm immediately Timeout and Timeout Delay postpone Time Error alarms for a user configured interval See Timeout and Timeout Delay on page 67 Power on Alarm Suppress prevents alarms from being triggered for a user configured interval after the XL GPS boots and starts See Power On Alarm Suppress on page 67
99. f the J3 input frequency once per measurement cycle with 240 picosecond resolution The number of zero crossings between successive measurement intervals is also recorded When the measurement interval elapses the previous measurement timestamp is subtracted from the current one and the difference is divided by the number of zero crossings between the two timestamps The result is the average period of the external frequency over the interval The reciprocal of this period is compared to the nominal frequency to determine the fractional frequency offset The timestamp reported with the resulting measurement is the ending timestamp of the two phase readings used to make the measurement Since this ending timestamp is now the beginning timestamp for the next measurement there is no dead time in the measurements The reported timestamp resolution is sufficient to allow integrating the fractional frequency offset measurements to fully recover the relative phase of the external frequency source being measured versus the disciplined XL GPS internal or external oscillator Display Freq Meas appears as follows in the front panel display keypad FREO OFFSET COUNT FX XXXXXXXX XXXXXX Where FREQ OFFSET x xxxxxx xx is the fractional frequency offset measurement divided by the COUNT xxxxxxx measurement interval These measurements are displayed until a new F113 configuration is selected or another function performed Comma
100. face and through the serial port s command line interface For additional information consult the relevant topics covering the F100 commands in the XL GPS User s Guide and Reference Manual Configuring the Time Display Configure the XL GPS to display time correctly Use the menu driven keypad interface to enter the functions and select the desired settings as follows F1 Time Zone Offset F World Map of Time Zones on page 141 Set the number of hours difference between your time zone and UTC For example Pacific Standard Time is UTC 08 00 Mountain Standard Time is UTC 07 00 Central Standard Time is UTC 06 00 Eastern Standard Time is UTC 05 00 F2 12 24 Hour Format F2 12 24 Hour Format on page 35 Select a 12 or 24 hour display format By default the XL GPS is set to the 24 hour display format e g 6 PM is displayed as 18 00 F66 Daylight Saving Time DST E66 Daylight Saving Time DST Mode on page 58 If needed set when Local time enters and leaves DST The factory settings for F66 apply to most users in the continental US DST begins at 2 am on the first Sunday of April and ends at 2 am on the last Sunday of October DSTis NOT observed in Hawaii American Samoa Guam Puerto Rico the Virgin Islands 997 01530 01 Rev C 25 Jan 2008 17 the Eastern Time Zone portion of the State of Indiana and most of Arizona Navajo Indian Reservation in observes DST Th
101. ference clock source The systemStatusGeneralGroup also contains the statusDescriptorStr object that returns a text string identical to the output of the F73 command on the command line interface The systemStatusDetail group contains objects describing the current status of each system object See the graph above and refer to the xIGpsSystem SMIv2 mib MIB for a complete description of each object 128 997 01530 01 Rev C 25 Jan 2008 XL GPS MainCard Group xliMainCard 2 ntpInPkts ntpO utPkts ntpInErrors ntpAuthFail ntpDesiredAcc ntpEstErr ntpSysLeap ntpSysHostMode ntpSysStratum ntpSysPrecision ntpSysRootDelay ntpSysRootDisp ntpSysRefClockldent Note For the figures in this chapter substitute xlgps for xli At present the x GosMainCard group contains only the NTP subgroup as shown above Refer to the xlGpsMainCard SMIv2 mib MIB definitions for a description of each of the NTP statistics XL GPS Traps The trap for the XL GPS product are defined under Symmetricom products xlGps xlGpsTrap This is required to maintain compatibility with MIBS defined using the Structure of Management Information version 2 definitions The XL GPS SNMP agent will send SNMP version 1 traps This is done to maintain compatibility with SNMPv1 managers The trap presently defined is alarmSystemNotification The alarmSystemNotification trap is sent when the state of an object in the systemStatusDetail group change
102. figuration type is not specified You did not specify the file type Recovery Action Re enter the command specifying SNMP and or NTP 112 997 01530 01 Rev C 25 Jan 2008 Informational Messages Messages in this section inform you of an event and do not require any action on your part Deleted previously set IP host address Your last action deleted the previously set IP host address NOTICE Cannot respond to command because Utility Port session has priority A Utility Port session has started and takes precedence Wait until it is over before logging in or expecting a response to an entered Telnet command Host lt NAME gt ip lt ADDRESS gt configured successfully Host configuration was successful Source file lt NAME gt bytes read lt NUMBER gt Source file was successfully read Dest file lt NAME gt bytes written lt NUMBER gt Configuration files transferred successfully Information was successfully transferred to the destination file Restarting the Unit Please wait A command has just been executed that requires a soft restart of the XL GPS The restart happens immediately after this message is sent OK Command accepted and processed as specified Goodbye The XL GPS has just terminated a session 997 01530 01 Rev C 25 Jan 2008 113 A Using F100 Configuration Configuring NTP amp SNMP Parameters F100 CONFIG instructs the XL GPS unit to transfer its NTP and SNMP configuration files to an
103. for input strings XL GPS responds OK lt CR gt lt LF gt F126 Options Key Entry Use function F126 to enter the Options Key which enables certain functions e g PPO TIET NTP FREQ MEAS if the correct key is entered To check the status of these XL GPS options see F117 Factory Configuration on page 103 After entering the key code using F126 reboot the XL GPS To set the Options Key code enter the following F126 lt S gt lt KC gt lt CR gt lt LF gt where F ASCII character F f or F for input string 126 the function number lt S gt ASCII space character one or more lt KC gt Key Code 0 to 999999999999999 A value of all nines will clear all Option enable flags CR carriage return character lt LF gt line feed character For example enter F126 lt S gt 5674397586090 lt CR gt XL GPS responds OK lt CR gt lt LF gt Use function F117 to verify that the correct code was entered Then reboot the unit to activate the option 108 997 01530 01 Rev C 25 Jan 2008 6 GPS M12 Receiver 87 8028 2 Introduction The optional GPS M12 Receiver acts as a Stratum O timing reference source to the XL GPS Time and Frequency System It tracks up to 12 L1 GPS satellites decodes their signals for time and position and feeds this data to the XL GPS through the internal backplane When available and enabled the GPS M12 Receiver card provides superior time and frequency accuracy on the XL GPS
104. h type of time Local Standard GPS UTC is being entered by the user The XL GPS translates the user entry into its equivalents in other types of time For example entering LOCAL 07 14 2002 15 47 10 in F3 shows up on the front keypad display as UTC 198 10 47 10 with F1 set to 8 00 TIME MODE in F3 defines only the entry of time in F3 it does not control the type of time displayed or output by the XL GPS F3 s Time Mode should not be confused with F69 see F69 Time Mode on page 61 F69 controls the type of time displayed output on the front panel display F8 Continuous Time Once per Second F9 Time On Request and F90 Code Output Configuration Notes Don t manually set the time using F3 settings while the XL GPS is locked to a reference source and distributing time information Doing so allows the XL GPS to distribute the potentially incorrect time set by F3 for up to 8 seconds until the XL GPS re synchronizes to the reference source s time The XL GPS will make this switch to and from F3 s time without generating an alarm In NTP for example this means that incorrect time information could be distributed in NTP packets that are marked as having the valid time Command Line To display the time and date send F3 lt CR gt XL GPS responds F3 lt S gt lt MM gt lt DD gt lt YYYY gt lt SEP gt lt hh gt mm lt ss gt lt CR gt lt LF gt where F3 ASCII string for function F3 S ASCI
105. he J3 input relative to the XL GPS disciplined frequency Frequency 1 5 10 MHz Resolution 120 x 10 120 1 Second Interval 12 x 10 120 10 Second Interval 1x 10 120 100 Second Interval Range 1000 x10 6 Impedance 1 kQ 50 0 Factory Configuration Disabled Accuracy Refer to Time and Frequency Accuracy on page 3 1 PPS Out A time stable 1 PPS one pulse per second output is provided If no reference is available the 1 PPS pulse will be as stable as the internal oscillator Pulse width 20 uS 1 uS On time edge Rising Accuracy Refer to Time and Frequency Accuracy on page 3 Amplitude TTL Levels into 50 Q Qty 1 Connector BNC female 6 997 01530 01 Rev C 25 Jan 2008 Code Out The default output is IRIG B 120 AM Configuration is via the Keypad Serial I O and Network port Format IRIG B 120 1 kHz AM 000 DC Amplitude AM 3 Vp p into 50 Q 10 Ratio AM 3 1 10 Amplitude DC TTL into 50 Q Qty 1 Connector BNC female Phasing In phase with carrier 10 uS Accuracy Refer to Time and Frequency Accuracy on page 3 Five flags are encoded in the control function segment of the IRIG B code The first flag encoded at element P5 40ms is the LOCK indicator It is a binary 1 when the reference source has become unlocked The second flag encoded at element P5 60ms is a binary 1 when the worst case time error exceeds threshold 1 element P5 70ms is a binary 1 when the worst case time error exceeds th
106. he unit s IP Address Use the following format to display the IP address F100 lt S gt IP lt CR gt Use the following format to set the IP address and restart the unit enter F100 lt S gt IP lt S gt lt nnn nnn nnn nnn gt lt CR gt where F ASCII character F 100 unit function number lt S gt space IP specify IP command nnn nnn nnn nnn dotted decimal address 0 to 255 CR input line terminator 76 997 01530 01 Rev C 25 Jan 2008 For example enter F100 IP 206 54 0 21 lt CR gt XL GPS responds O K lt CR gt lt LF gt ESETING THE UNIT lt CR gt lt LF gt PLEASE WAIT lt CR gt lt LF gt ve To obtain the IP address of the unit Standard network port enter F100 IP lt CR gt XL GPS responds example F100 IP 206 54 0 21 lt CR gt lt LF gt The three commands F100 IP F100 SM and F100 G can be concatenated to set all three values simultaneously To do so use the following format F100 lt S gt IP lt S gt lt nnn nnn nnn nnn gt lt S gt SM lt S gt lt nnn nnn nnn nnn gt lt S gt G lt S gt lt nnn nnn nnn nnn gt lt CR gt Note The three commands i e IP SM G can be used in any order relative to each other A colon separator can be used instead of S following IP SM and G e g 1P 192 168 46 150 For example using appropriate values for your network enter something similar to F100 IP 192 169 46 150 SM 255 255 255 0 G 192 168 46 1 CR X
107. here SOH CR mmm ASCII Start of Heading character ASCII Carriage Return character ASCII Line Feed character day of year hours minutes seconds milliseconds colon separator time quality character see the following table The time quality character Q is one of the following characters SPACE Time error is less than time quality flag 1 s threshold Time error has exceeded time quality flag 1 s threshold Time error has exceeded time quality flag 2 s threshold Time error has exceeded time quality flag 3 s threshold Time error has exceeded time quality flag 4 s threshold or a reference source is unavailable For example to prepare Time on Request enter F9 CR Then to request the current time enter SHIFT T on your keyboard T does not appear on the command line XL GPS responds lt SOH gt 128 20 30 04 357 lt CR gt lt LF gt To exit F9 press Ctrl C on your keyboard 997 01530 01 Rev C 25 Jan 2008 45 F11 Time Output Format Use function F11 to review or change the format of the time output string used in F8 and F9 The as shipped factory setting for F11 format is null which enables F8 s and F9 s default time output formats The default format for F8 Continuous Time Once per Second is lt SOH gt DDD HH MM SSQ lt CR gt lt LF gt Note F8 does not display milliseconds regardless of the format defined in F11 The default format for F9 Time On Request i
108. iage return character lt LF gt Line feed character 997 01530 01 Rev C 25 Jan 2008 61 For example enter F69 lt CR gt XL GPS gives one of the following responses F69 GPS lt CR gt lt LF gt F69 UTC lt CR gt lt LF gt F69 LOCAL lt CR gt lt LF gt F69 STANDARD lt CR gt lt LF gt To set the time mode enter a command using the following format F69 lt S gt lt TT gt lt CR gt where F ASCII character F 69 Function number S ASCII space character lt TT gt Time Type Either GPS UTC LOCAL or STANDARD CR carriage return character lt LF gt line feed character For example to change the time mode to local time enter F69 LOCAL lt CR gt Or to change the time mode to UTC enter F69 UTC lt CR gt F69 responds to these changes with OK lt CR gt lt LF gt RESETTING THE UNIT lt CR gt lt LF gt PLEASE WAIT lt CR gt lt LF gt F71 Oscillator Statistics Use F71 to display the phase frequency offset drift rate and DAC value of an internal or optional external oscillator Definitions 62 997 01530 01 Rev C 25 Jan 2008 The phase is the instantaneous error in seconds between the oscillator and the control loop zero servo point The frequency offset is computed using an averaging time that is equal to the effective averaging time of the oscillator controller The oscillator Drift Rate is computed using a 24 hour average and is the da
109. ily Drift Rate of the oscillator The oscillator DAC value is the signed 16 bit integer that controls the DAC output voltage It ranges from 0 to 65536 Command Line To display the F71 settings enter F71 CR F71 responds using the following format F71 lt S gt phase lt SIGN gt lt MULT gt E lt SIGN gt lt EXP gt lt S gt s lt S gt lt S gt offset lt SIGN gt lt MULT gt E lt SIGN gt lt EXP gt lt S gt lt S gt dr ift lt SIGN gt lt MULT gt E lt SIGN gt lt EXP gt DAY lt S gt lt S gt DAC lt SIGN gt lt INT gt lt CR gt lt LF gt where F ASCII string indicating function F71 lt S gt ASCII space character one or more lt MULT gt multiplier 4 digits with decimal point E ASCII character E for exponent s ASCII character s for seconds abbreviation lt SIGN gt for negative or lt S gt for positive EXP 2 digit exponent DAY ASCII characters units of Drift Rate lt INT gt integer 5 digits lt CR gt carriage return lt LF gt line feed For example enter F71 lt CR gt F71 responds F71 PHASE 5 678E 09 s OFFSET 1 986E 07 DRIFT 6 013E 08 DAY DAC 24567 lt CR gt lt LF gt 997 01530 01 Rev C 25 Jan 2008 63 F72 Fault Status Use function F72 to display the fault status of the clock Clock PLL Locked or unlocked Clock Status Locked or unlocked Command Line To display the status of the fault detectors enter F72 CR F
110. ime Output Format 46 Time Zone 34 141 Time Zones 141 997 01530 01 Rev C 25 Jan 2008 151 Time Quality Setup 39 U Upgrading 74 System Firmware 118 US Assistance Center 143 User Interfaces 25 User Name 29 Change 91 Username Changing 30 Using F100 Config 114 V Version Software 49 Volatility Statement 12 X XL GPS Configuration 133 MainCard Group 129 Overview 1 Product Description and Features 1 Rack Mounting 23 Software 74 System Group 126 System Status Group 128 Traps 129 XL GPS Generated Messages 111 XYZ coordinates 49 152 997 01530 01 Rev C 25 May 2008
111. iver status e GPS Status Locked or Unlocked GPS Antenna Ok or Open 104 997 01530 01 Rev C 25 Jan 2008 e GPS Acquisition State Dynamic Mode Stop Site Survey Stop TRAIM Start Site Survey Start TRAIM Survey Position Position Hold TRAIM Active Operation Each of F119 s information status and configuration items are explained below Because F119 and the GPS receiver are important elements of the XL GPS Time and Frequency System this section explains interactions and behavior of the F119 the GPS receiver and other system functions in some detail Part Number Software Version and FPGA Number This information may be useful for identifying the GPS receiver to Symmetricom technical support GPS Status Locked or Unlocked During normal operation Locked means the receiver has its current position and the current GPS time Unlocked means the receiver doesn t have its current position yet or that no good current satellites are available to provide the current GPS time For additional information on good current GPS satellites see F60 GPS Receiver Satellite List on page 56 Note GPS status can be Locked before the GPS receiver is a valid time reference This is explained below The GPS receiver serves as a UTC time reference for the XL GPS system clock To be a valid time reference the receiver requires the following information The GPS time at least one good current
112. l Please notify the Customer Assistance team of any suggested improvements or corrections Finding Answers to Product Questions For additional information about the products described in this guide please contact your Symmetricom representative or your local sales office You can also contact us on the web at www symmetricom com viii 997 01530 01 Rev C 25 Jan 2008 1 Overview of the XL GPS Time and Frequency Receiver Product Description and Features The XL GPS Time and Frequency Receiver is high precision time and frequency system that generates time and frequency outputs from its GPS disciplined system clock When locked to Symmetricom s timing optimized GPS receiver the XL GPS provides 1x1 pe frequency output accuracy and better than 30 nS RMS accuracy to UTC Two user interfaces are available for managing the XL GPS command line interface available from the serial and network ports using TELNET e keypad interface available on the front panel of the XL GPS The standard configuration includes e 1Uchassis e GPS receiver e Vacuum fluorescent display and a 19 button keypad 1 pulse sec out via rear panel BNC e RS 232 or RS 422 via rear panel 9P D Male Network Port 10 100 Base T for TELNET and SNMP Rate Out 1 10 100 PPS 1 10 100 kPPS 1 5 10 MPPS 1 output via a rear panel BNC IRIG B Time Code Out AM or DC via a rear panel BNC Alarm Open Collector via a rear panel BNC 90 264 VAC
113. le The four time quality thresholds are set by F5 Time Quality Setup See F13 Time Error on page 48 for more information Command Line For example to initiate Continuous Time once per second enter F8 lt CR gt The XL GPS replies 199 11 19 30 lt CR gt lt LF gt 199 11 19 31 lt CR gt lt LF gt 199 11 19 32 lt CR gt lt LF gt To stop Continuous Time Once Per Second press Ctrl C on your keyboard to stop it F9 Time On Request Note This function is available through the command line interface only it is not available through the keypad Use function F9 to record the exact time the XL GPS receives a request from the user Enter the command F9 CR to prepare the XL GPS for the user s request At the desired moment send the request to the XL GPS by entering an upper case T The XL GPS saves the current time of day accurate to within 1ms to a buffer and then outputs it to the command line interface The XL GPS will continue to provide the time of day each time it receives a T until F9 is cancelled To cancel this function enter Ctrl C on your keyboard The command line disregards any input other than SHIFT T until it receives a Ctrl C command The time of day output is only available on the port network or serial that was used to give the F9 command 44 997 01530 01 Rev C 25 Jan 2008 The default output string is as follows lt SOH gt DDD HH MM SS mmmQ lt CR gt lt LF gt w
114. ls how long the LED remains amber The blinking of the LED has no meaning It is a user preference that can be enabled or disabled using the F73 s LED Blink setting If enabled the LED blinks when it is green and yellow but stays unblinking when it is red If disabled the LED doesn t blink keypad Interface Time Display Press the TIME button on the keypad to display the time only Use the TIME button to exit the STATUS MENU or function displays The default time format is HH MM SS 997 01530 01 Rev C 25 Jan 2008 25 Time Display related functions e Select between the 12 or 24 hour format displayed F2 12 24 Hour Format on page 35 e Select between Local Standard UTC and GPS time F69 Time Mode on page 61 Time related functions e F1 Time Zone Offset on page 34 E3 Time amp Date on page 37 F66 Daylight Saving Time DST Mode on page 58 Status Display le The Status Display comes up automatically when the XL GPS is rebooted To manually switch from another display to the Status Display press STATUS button on the keypad The keypad appears as follows LOCKED GPS UTC 200 21 24 09 2002 where System Clock Status is Locked or Unlocked to the current reference source See Clock Status in F73 Alarm Control Status on page 64 A reference source input has been configured but is not available Note When using GPS may remain visi
115. lues ENTER Enters currently displayed choice e g a function or yes confirmation to save changes CLR Clears the current selection choice and returns to the last saved value TIME Displays the current time Can also be used to exit a function without saving changes STATUS Displays the clock status and time Can be used to exit a function without saving changes MENU Displays first item in function menu Use UP DOWN ARROWs to display other functions Keypad Examples The following examples show how to use the keypad effectively 997 01530 01 Rev C 25 Jan 2008 27 To open a function using ENTER Press Result ENTER Displays the FUNCTION prompt 2 Enter the function s number 2 in this example ENTER Displays F2 s first screen DISPLAY HOUR FORMAT 24 HOUR To open a function using MENU Press Result MENU Displays F1 on the front panel display UP DOWN ARROW Scrolls through the list of functions ENTER Opens the function and displays its first screen To change the settings in a function and not save them Press Result MENU Displays F1 TIME ZONE OFFSET ENTER Displays TIME ZONE OFFSET 08 00 UP ARROW Changes the minus sign in 08 00 to a plus in 08 00 RIGHT ARROW Moves the cursor to the right under 0 UP ARROW Changes 0 to 1 making 18 00 ENTER XL GPS asks SAVE CHANGES YES UP ARROW Changes YES to No ENTER Ab
116. mand is issued To write the FPGA program to the flash send the F100 BH command with the FTP host file path and name and then send the following command F100 BUFP lt Enter gt This command is only valid for XL GPS with an 86 8000 Rev G or higher Main CPU card If the Main CPU card is of the wrong version an error message ERROR INVALID COMMAND will be displayed This command is valid only via the command line interface in the following scenarios 1 the terminal is communicating to the XL GPS directly via the serial port or 2 the terminal is connected to the XL GPS network port and the user is logged in as an operator Ifthe terminal is connected to the XL GPS network port and the user is logged in as a guest this command will be deemed invalid and an error message ERROR ACCESS DENIED will be displayed Prior to burning the FPGA program to the target flash another error checking step is performed The new FPGA program size is checked against the designated memory sector in the target flash If the memory sector is not big enough to store the FPGA program the command will be aborted an error message FILE FN EXT yyy BYTES TOO LARGE FOR PARTITIONING zzz BYTES LOAD ABORTED will be displayed and the new program will not be loaded to the flash After all the requirements for burning the FPGA program are met XL GPS will proceed to burn the FPGA program from the FTP host computer to the target flash by responding with
117. mple Network Time Protocol SNTP RFC1361 is available In addition the NTS will respond to TIME protocol requests RFC868 The NTS will respond to time synchronization requests from hosts using these User Datagram Protocol Internet Protocols UDP IP NTP ver 3 0 UDP Port 123 RFC1305 Transmitted Timestamp Accuracy 10 uS SNTP UDP Port 123 RFC1361 TIME UDP Port 37 RFC868 997 01530 01 Rev C 25 Jan 2008 Oscillators Standard TCVCXO Accuracy Frequency Timing Stability Allan Deviation Temp Optional OCXO Accuracy Frequency Timing Stability Allan Deviation Temp Drift rate Certification UL C UL FCC CE IEC lt 1 x 10 1 day when locked to GPS 1x 10 Q 1 sec 3 x 10 10 sec 3x 10 100 sec 2 x 1071 1000 sec 1x10 1 day 5x107 over 0 C to 50 C when not locked to GPS lt 1 x 10 1 day when locked to GPS 1x 107 1 sec 1 x 10 1000 sec 1x10 1 day 1 x 10 over 0 C to 50 C when not locked to GPS 5 x 10 Day UL 60950 2000 CAN CSA C22 2 No 60950 00 2000 FCC Part 15 Subpart B 89 336 EEC EMC Directive EN55022 1998 EN55024 1998 EN61000 3 2 2000 EN61000 3 3 1995 73 23 EEC Low Voltage Safety Directive EN 60950 1 2001 IEC 60950 1 2001 Safety of Information Technology Equipment ITE Calibration Statement This unit does not contain user serviceable parts and does not require calibration 997 01530 01 Rev C 25 Jan 2008 11 12 Volatili
118. na enter F50 LLA lt CR gt XL GPS responds example F50 N 38d23 51 3 W 122d42 53 2 58m lt CR gt lt LF gt To display the present antenna position using ECEF XYZ coordinates in meters use the following format F50 lt S gt XYZ lt CR gt XL GPS responds using the following format F50 lt S gt lt SIGN gt lt S gt lt MX gt m lt S gt lt SIGN gt lt S gt lt MY gt m lt S gt lt SIGN gt lt MZ gt m lt CR gt lt LF gt 997 01530 01 Rev C 25 Jan 2008 51 where F ASCII character F 50 function number lt S gt ASCII space character SIGN Either or for the position of the ECEF XYZ coordinates lt MX gt Antenna X position in meters to tenths of a meter lt MY gt Antenna Y position in meters to tenths of a meter lt MZ gt Antenna Z position in meters to tenths of a meter m ASCII character m for Meters ALT altitude in meters CR carriage return character LE line feed character For example F50 XYZ lt CR gt XL GPS responds example F50 X 4474331m Y 2668899m Z 3668099m lt CR gt lt LF gt F51 GPS Antenna Cable Delay Use function F51 to display or configure the GPS antenna cable delay Setting a positive value for F51 compensates for the time the signal takes to travel the length of the cable from the GPS antenna to the receiver The factory setting for F51 is 60 nS 50 feet of RG 59 If using an optional Down Up Converter consult that product s documentation
119. ncode Universal Coordinated Time UTC in 24 hour format and not local time Nonetheless this instrument can encode UTC or local time in either 24 or 12 hour formats IRIG Code Format Reference IRIG Standard Format A on page 140 The level shifted pulse width modulated serial formats of IRIG B are divided into three segments The first segment encodes time of year in binary coded decimal BCD notation The second segment encodes control functions This segment is generally available for data of the user s choice In the IRIG B code output of Model XL GPS this segment encodes worst case time error flags as explained below The third segment sometimes encodes time of day in straight binary seconds SBS notation Both IRIG B encodes SBS on the Model XL GPS The three code segments are contained within one frame The frame length for IRIG B is 1 second long and contains 100 elements pulses each of which start every 10 milliseconds An element may represent either a binary zero a binary one a reference marker or a position identifier A zero is 0 2 of the duration of an element a one is 0 5 of the duration of an element and a position identifier or reference marker is 0 8 of the duration of an element A reference marker locates the 138 997 01530 01 Rev C 25 Jan 2008 beginning of each frame and a position identifier marks the end of every ten elements IRIG B has ten position identifiers per frame The elements prior to positi
120. nd janus Upgrade the Firmware Command Format When issuing the firmware upgrade commands use the following format F100 command ftp server ip address relative path file ext If the FTP server is on your workstation ftp server ip address is the IP address of your workstation relative path is a subdirectory inside the anonymous user s home directory on the FTP server If there is no subdirectory i e if the upgrade files are sitting in anonymous user s home directory drop relative path from the command line For example if c ftpworkfiles is the anonymous user s home directory and the upgrade files are in c ftpworkfiles XL GPS you would enter the command as follows F100 bh 192 168 49 120 XL GPS 192 8000 bt On the other hand if the files are in c ftpworkfiles the anonymous user s home directory you would drop the relative path and enter the command as follows F100 bh 192 168 49 120 192 8000 bt Issuing the Upgrade Commands Adapt the following examples as needed to match your system such as differences in IP address path and filename Enter the following command F100 bh IP address relative path file bt For example F100 bh 192 168 49 120 192 8000 bt XL GPS responds BURN HOST IS READY lt CR gt lt LF gt 997 01530 01 Rev C 25 Jan 2008 119 Then burn the bootloader to the XL GPS s flash memory by entering F100 bub XL GPS resp
121. nd Line To display the J3 Input Configuration enter F113 lt CR gt XL GPS responds as follows if the Freq Meas option has not been installed F113 lt S gt DISABLE lt CR gt lt LF gt When the Frequency Measurement option is enabled F113 responds F113 lt S gt FREO MEAS lt S gt lt FREQ gt lt S gt lt IMP gt lt S gt lt INT gt lt CR gt lt LF gt Where the F113 entry and request formats are defined as F ASCII character F 113 function number SHOW ASCII character string SHOW for displaying frequency measurements DISABLE ASCII character string DISABLE to disable J3 as input port 997 01530 01 Rev C 25 Jan 2008 101 F ASCII character F FREQ MEAS ASCII character string FREQ MEAS to set J3 to make frequency measurements S ASCII space character one or more FREQ FREQ MEAS Input Frequency 1MHZ 5MHZ 10MHZ IMP nput Impedance 1K or 50 lt INT gt Frequency Measurement Interval This is the gate time of the measurement Range 000001 999999 in seconds lt CR gt lt LF gt line terminator either a carriage return and line feed for output strings or a carriage return only for input strings For example enter F113 lt CR gt The XL GPS displays the current configuration example F113 DISABLE lt CR gt lt LF gt Or F113 FREQ MEAS 1MHZ 50 000001 lt CR gt lt LF gt To set the J3 Input Configuration enter a character string using
122. nd Priority o ooooooooccoooooo eee 30 5 Function Reference vecs a 32 FUNCION Summary ns doe AA A ds de 32 FT Time Zone Offsel orcas id AA 34 E212 24 pour Format suspirar DEBENT Ent eI 35 FS Time amp Dale usu ned euni uu anis Nana duode Mex NIS AA 37 F4 Serial Port Configuration llle 38 F5 Time Quality Setup 2 06 5 ee eee eee ce ee eee irse 39 FO Keypad Lock ao Seer AA se ees 41 F8 Continuous Time Once per Second ooo 42 F9 Time On Request i3 914 04 e a dd oe ai 44 F11 Time Output FOITDSL s os a v io ws de e od Re Qa C RT 46 F13 Time EMO adidas ada A ere reke ose eek ed 48 F18 Software Version Request 00 cece cece eee eee ees 49 F50 GPS Receiver LLA XYZ Position oils 49 ii 997 01530 01 Rev C 25 Jan 2008 F51 GPS Antenna Cable Delay licel eese 52 F52 Distribution Cable Delay oooocccoooooooronona 53 F53 GPS Operation Modes i 5221 reser ps Iu wae wks s XU IP eat 55 F60 GPS Receiver Satellite List oooooooommmmmo 56 F66 Daylight Saving Time DST Mode ilsuelellseellsens 58 FOO Time Modene oeaccrepreb p tapa pes a bus pt rbe 61 Bi USO STA USES VEA RE b xS a ceu 62 E72 Faulb talus 725 rene supr bb denti mure SUR Baleares od ace det voe la 64 F73 Alarm Control Status 0 0 0 eee es 64 E90 Code Output Configuration cio cs RE E e ts 72 F10
123. nfig ip 192 168 0 1 already configured Source file config snmp conf bytes read 1275 Dest file snmp conf bytes written 1275 Source file etc ntp conf bytes read 1166 Dest file ntp conf bytes written 1166 Source file etc ntp keys bytes read 44 Dest file ntp keys bytes written 44 Configuration files transferred successfully If you get Error Can t write file when you enter the get command verify the following FTP server items FTP server is running Anonymous has a home directory The home directory for Anonymous has read write and delete enabled make sure to apply changes 997 01530 01 Rev C 25 Jan 2008 115 Edit the Configuration Files In Windows edit the configuration files using a text editor such as Notepad or Wordpad For more information see D Network Time Protocol NTP on page 135 If using the preconfigured FTP server downloaded from http www ntp systems com zip warftpd1 zip the FTP places the configuration files in C Symmetricom the default or home directory of anonymous Note Follow these guidelines when editing the configuration files Ifthe editor displays odd box characters or the lines of text don t wrap properly close the file without saving changes and switch to a different text editor Don t rename or save the configuration files as a new file type Some text editors encode end of line carriage returns that cause errors when XL GPS refers to
124. nstallations order status and scheduling 8 00 am to 5 00 pm UTC Monday through Friday excluding UK Holidays Technical Support For technical support 24 hours a day 7 days a week every day of the year contact us at emea_support symmetricom com Comments complaints and suggestions are always gladly accepted customer _relations symmetricom com 997 01530 01 Rev C 25 Jan 2008 143 144 997 01530 01 Rev C 25 Jan 2008 Index Numerics 10 100 BASE T 79 12 24 Hour Format 35 87 8028 2 109 A Accuracy 3 Alarm 25 Alarm Control Status 64 Alarm Status LED 25 Alarm Status LED 25 64 Antenna Cable Delay 52 Aux Ref 6 J3 Input 100 B BASE T 79 BF 85 BH 83 BootLoader 83 Bootloader Mode 92 BU 84 BUB 83 BUFP 85 Burn 84 Burn BootLoader 83 Burn File System 85 Burn FPGA Firmware 85 Burn Host 83 C Cable Delay Distribution 53 GPS 52 Calibration Statement 11 Certifications 11 Change User Name 91 Change User Password 90 Code Output 72 Code Output Configuration Configuration 72 Command Line Interface 18 29 Using 18 CONFIG 87 114 997 01530 01 Rev C 25 Jan 2008 145 CONFIG Parameters 87 Configuration Factory 103 GPS Receiver 104 Oscillator 93 Configure NTP amp SNMP Parameters 87 114 Continuous Time Once per Second 42 Customer Service 143 D Daylight Saving Time DST Mode 58 Deleted previously set IP host address 113 Dest file bytes written Configuration files transferred successfull
125. nymous s home directory Get the IP Address of the FTP Server Workstation If the FTP server is running on your Windows workstation open a DOS command line window on the workstation Click Start Run and type cmd or Click Start Programs and Accessories in some cases and select Command prompt or DOS prompt At the command line type ipconfig Make note of the IP Address 114 997 01530 01 Rev C 25 Jan 2008 For other operating systems and configurations consult the appropriate documentation for obtaining the FTP server s IP address Copy the Configuration Files to the FTP Server Telnet to the XL GPS or open a terminal session to it over the serial port Using the command line enter the commands below Replace IP Address with that of the workstation FTP Server Leave subdir blank the FTP server will save the files in anonymous s home directory Note See Using the Command Line Interface on page 18 if you need instructions for connecting to the command line interface To get the NTP config files type gt 100 config ntp get host lt IP Address dir lt subdir gt To get the SNMP config file type gt 100 config snmp get host IP Address dir lt subdir gt To get the SNMP and NTP config files type gt 100 config ntp snmp get host IP Address dir lt subdir gt Here s an example of a successful SNMP and NTP config file transfer gt f100 config ntp snmp get host 192 168 0 1 dir Host co
126. o the J4 output To generate RIG B AM time code move the plug in JP2 to the AM jumper For example to generate IRIG B AM on the J4 output move the plug from J4 DC to J4 AM At this point the configuration procedure would be complete To generate any other signal type three steps are required First move the plug in JP2 to the DC jumper e g J4 DC Second select a signal type from the following table and note the corresponding switch position e g 10 MPPS position 1 Finally using a small flat head screwdriver turn the rotary switch e g S4 to the appropriate switch position e g 1 In this example the J4 output would be set to 997 01530 01 Rev C 25 Jan 2008 21 generate 10 MPPS and the procedure would be complete The same method can be used to configure any of the outputs Switch Position Signal Type Off 10 MPPS 5 MPPS 1 MPPS 100 kPPS 10 kPPS 1 kPPS 1 PPS Code DC IRIG B DC Time Code PPO Alarm F Not Used U gt O o 0 Oc 5 W MY O Note PPO and Alarm are only available if those options have been purchased and are enabled using F126 Options Key Entry page 108 Note F90 Code Output Configuration does not control the IRIG signals on the Expansion Module Verifying Antenna Installation After completing the above steps use the keypad to verify the following e In F119 GPS Receiver Configuration page 104 after approximately 20 minutes of operation check that GPS STATUS is LOCKED and
127. oad this version into the XL GPS NTP Server for NTP MD5 and NTP broadcast The line below to enables NTP broadcast mode using MD5 key 1 broadcast 192 168 47 255 key 1 Trust and accept NTP packets using MD5 keys 1 or 2 The MD5 keys and key ID specified in the XL GPS s NTP KEYS file must match the same ones in the UNIX Linux client NTP KEYS file The same keys for both units must be specified as trusted by the line below trustedkey 1 2 997 01530 01 Rev C 25 Jan 2008 135 Editing MD5 keys on the XL GPS NTP keys are needed if you are using NTP in broadcast mode with MD5 authentication This and the following section provide configuration guidelines For additional information consult Dr Mills NTP site at http Awww ntp org Broadcast mode adjusts its periodicity according to feedback from its broadcast client The periodicity will typically settle out to about every 2 minutes This activity is not adjustable MD5 private keys have to be edited on both the NTP server and the NTP client The private keys are defined in the ntp keys file The NTP client ntp keys file is identical to the one on the NTP server For the specific keys used by the NTP server the NTP client must have the identical line in its version of the file You ll want to use your own hard to guess key names using random letters The critical lines of the ntp keys file are M symmetricom 2 M TTXL GPS where 41 and
128. ompt asks Save Changes Yes No Yes applies the changes No cancels the changes For J1 specifications see 1 PPS Out on page 6 Notes Stray capacitance loading on the J1 input adversely impacts TIET measurements Line Command Use F110 to query or configure the J1 TIET input or to query TIET information To request the J1 Input Configuration enter F110 CR The port responds with the ASCII character string F110 lt S gt TII ET lt S gt lt Impedance gt lt S gt lt Sign gt lt CR gt lt LF gt when TIET option is enabled and J1 has a TIET input Where the F110 entry and request formats are defined as F 110 TIET S 94 ASCII character F function number ASCII character string TIET for configuring J1 for TIET measurement ASCII space character one or more 997 01530 01 Rev C 25 Jan 2008 F ASCII character F Impedance 100K 50 lt CR gt lt LF gt line terminator either a carriage return and line feed for output strings or a carriage return only for input strings Sample request F110 lt CR gt XL GPS responds example F110 TIET 50 POSITIVE lt CR gt lt LF gt To the configure TIET input with a different impedance value enter example F110 TIET 100K POSITIVE lt CR gt XL GPS responds OK lt CR gt lt LF gt To obtain TIET measurement from J1 enter F110 TIET TIME lt CR gt XL GPS responds OK lt CR gt lt LF gt XXXXXXXXX lt C
129. on identifier P5 comprise the time of year segment The first ten elements encode the seconds the second ten elements encode the minutes and so on through days Each element is a digit in a binary number with a place value sequence 1 2 4 8 IRIG B Time Quality Flags Five flags are encoded in the control function segment of the IRIG B code The first flag encoded at element P5 40ms is the LOCK indicator It is a binary 1 when the XL GPS is not locked to a reference The second flag encoded at element P5 60ms is a binary 1 when the worst case time error exceeds threshold 1 refer to Function 5 Time Quality Enable Setup Element P5 70ms is a binary 1 when the worst case time error exceeds threshold 2 Element P5 80ms encodes a binary 1 when the error exceeds threshold 3 and P5 90ms when the error exceeds threshold 4 Output The XL GPS provides the following IRIG time code outputs refer to IRIG Standard 200 95 IRIG B B120 1 kHz sine wave amplitude modulated with BCD CF SBS B000 DC level shift width coded with BCD CF SBS 997 01530 01 Rev C 25 Jan 2008 139 Figure 4 IRIG Standard Format A El Y LVNUOd OHYONYLS DIU l Junot 335 GH W01 Hali YO 031 v 1nOON 1YOtd AL 3 Gn T0 MONO UDALA X30N ONOORE 100 0 amp nToNOUvuna LAT LI SOMOOJS LES Er ELLA PI SUNON IE EA YO Cat M a 4 3 1MO SHL Lv a ES gag is 1383 SS sen 533 ean 93 wane ll y EE id g sd d td ug d GOMODIS AUVNIS
130. on the front panel or command line Changing the function on the front panel or command line terminates Freq Meas F117 Factory Configuration Use function F117 to display the XL GPS factory Serial Number and the availability optional software features Send the string F117 lt CR gt XL GPS responds F117 lt S gt SN lt S gt lt SERIAL gt lt CR gt lt LF gt NTP lt STATE gt lt CR gt lt LF gt FREQ MEAS lt STATE gt lt CR gt lt LF gt TIET lt STATE gt lt CR gt lt LF gt PPO lt STATE gt lt CR gt lt LF gt P P 997 01530 01 Rev C 25 Jan 2008 103 where F ASCII character F 117 function number S ASCII space character one or more NTP NTP option FREQ MEAS FREQ MEAS option TIET TIET option PPO PPO option CR carriage return STATE ENABLE or DISABLE LE line feed For example enter F117 lt CR gt XL GPS responds F117 SN 31234 lt CR gt lt LF gt NTP ENABLE lt CR gt lt LF gt FREO MEAS ENABLE lt CR gt lt LF gt TIET ENABLE lt CR gt lt LF gt PPO ENABLE lt CR gt lt LF gt F119 GPS Receiver Configuration Summary Use function F119 to query and configure the 6 GPS M12 Receiver 87 8028 2 page 109 F119 provides the following GPS receiver information Available Not Available Part Number e Software Version FPGA Number F119 provides the following GPS rece
131. onds OK B SEC 0 RES JO SEC 1 RE 0 SEC 2 RE 0 SEC 3 RE 0 SEC 4 RE 0 SEG b RES 0 SEC 6 RE 0 F Do the same for the URNING FILE 192 8000 bt WITH SIZE 452164 TO PARTITION 0 SECTOR 0 T LASH SUCCESSFULLY PROGRAMMED CRC32 Ox9EFBE60A firmware bin file F100 bh IP address relative path file bin For example F100 bh 192 168 49 120 192 8001 bin XL GPS responds BURN HOST IS RI Then enter F100 bu XL GPS responds OK BURNING FILE 1 SEC 16 RE O SEC 17 RE O SEC 18 RE O SEC 19 RE O SEC 20 RE O SEC 21 RE O SEC 22 RE O SEC 23 RE O SEC 24 RE O SEC 25 RE O SEC 26 RE O SEC 27 RE O SEC 28 RE O F 120 EADY lt CR gt lt LF gt 92 8001 bin WITH SIZE 803016 TO PARTITION 1 SECTOR 10 T LASH SUCCESSFULLY PROGRAMMED CRC32 0x2D9A260A 997 01530 01 Rev C 25 Jan 2008 Then do the same for the file system fs file F100 bh IP address relative path gt lt file fs gt For example F100 bh 192 168 49 120 192 8002 fs XL GPS responds BURN HOST IS READY lt CR gt lt LF gt Then enter F100 bf XL GPS responds OK BURNING FILE 192 8002 fs WITH SIZE 524288 SEC 94 SEC 95 SEC 96 SEC 97 SEC 98 SEC 99 SEC 100 SEC EO SEC 102 Then enter K space space L space L as shown here F100 KILL The KI L L
132. ough the network port serial port and keypad Can be unlocked only through the keypad or serial port Display the XL GPS s self test results for Flash CRC RAM Serial Port and NVRAM Upgrading system firmware select the FTP host path and filename of the system firmware Upgrading system firmware burn the bootloader file bt selected using F100 BH to flash memory Upgrading system firmware burn the system firmware file bin selected using F100 BH to flash memory Upgrading system firmware burn the file system file fs selected using F100 BH to flash memory Upgrading system firmware burn the FPGA program file bin selected using F100 BH to the flash memory Transfer the NTP and SNMP configuration files between the XL GPS and an FTP server for editing View the status of the factory mode jumper which is used by factory technicians Not of interest to most end users Reboot the XL GPS Change the XL GPS password Ping from the XL GPS to another host on the network Change the User Name 33 F108 Oscillator Configuration F110 J1 Input TIET F111 J2 Output Rate PPO F113 J3 Input Freq Meas F117 Factory Configuration F117 Factory Configuration F119 GPS Receiver Configuration F126 Options Key Entry F1 Time Zone Offset View the oscillator type Configure the J1 input connector Configure the J2 output connector Configure the J3 input connector Set th
133. ous time notation For example if the 12 hour format is applied to UTC the clock will display 249 10 21 34 once in the morning and once at night The factory settings for F2 are 24 hour format for the display and 24 hour format for IRIG F90 Command Line To display the current hour format send F2 lt CR gt XL GPS responds F2 lt S gt D lt HH gt lt SEP gt I lt HH gt lt CR gt lt LF gt where F ASCII character F 02 Function number S ASCII space character one or more D ASCII character for Display format HH 120r24 I ASCII character for IRIG format CR Carriage return character lt LF gt Line feed character For example to display the current hour format send F2 lt CR gt XL GPS responds F2 D24 124 lt CR gt lt LF gt To set the hour format send F2 D12 124 lt CR gt XL GPS responds OK lt CR gt lt LF gt 36 997 01530 01 Rev C 25 Jan 2008 F3 Time amp Date When an optional oscillator is used because a GPS signal is unavailable use function F3 to manually set the XL GPS system clock s time and date When the XL GPS is using GPS as timing reference setting F3 manually is unnecessary At startup the XL GPS synchronizes its time and date to GPS F3 prompts the user for the Time Mode the Date in mm dd yyyy format and the Time in hh mm ss format The hours in hh mm ss should be given using 24 hour notation e g 6 pm 18 00 TIME MODE selects whic
134. product quotes 143 Programmable Pulse Output 96 Q quotes 143 R Rack Mounting 23 Rate Output J2 96 Reboot 89 Remote Lock Status 81 Remote Lockout 80 Restarting the Unit Please wait 113 S Satellite List 56 Self Test Status 82 Serial Port Configuration 38 Connecting to 18 Connecting to 18 service quotes 143 Session Priority 30 Session Timeout 30 Signal Strength Requirements GPS 15 SM 77 SNMP 74 75 87 88 112 114 115 116 124 125 126 127 129 130 131 132 133 Configure Parameters 87 114 150 997 01530 01 Rev C 25 May 2008 Configuring and Testing 131 Glossary of Related Terms 130 SNMP Addressing 124 SNMP Private Enterprise MIB Structure 124 Software System Firmware upgrading 118 Software Version 49 Source file bytes read 113 Specifications 3 AC Power Supply 4 Chassis 3 Code Out 7 Environmental 3 GPS Reference 3 GPS Time and Frequency Referenc 8 J1 Optional TI ET 5 6 J2 Optional Programmable Pulse Out PPO 6 J2 Rate Out 5 J3 Optional Frequency Measurement 6 Network Port 10 100 5 RS 232 RS 422 Interface 4 Standard I O 4 Time and Frequency 3 ST 82 Statistics Oscillator 62 Status Alarm Control 64 Fault 64 Self Test 82 Status Display 26 28 29 Subnet Mask 77 T Technical Support 143 Test Procedure 133 TIET 93 Time amp Date 37 Time Code J1 Input 93 Time Display 25 28 Configuring 17 Time Error 48 Time Interval Event Time 93 Time Mode 61 Time On Request 44 T
135. ps of commands Group 1 available through the keypad and the command line provides access to network port settings and hardware Firmware status information Group 2 available through the command line only provides commands for changing system firmware changing NTP amp SNMP parameters changing the user name password resetting the unit and pinging other network devices Warning The F100 commands have the capacity to remove the XL GPS from the network and disable the XL GPS s system firmware Use judiciously Reboot Warning Saving changes to any F100 parameter using the keypad will reboot the XL GPS Some of the F100 command line commands also reboot the XL GPS These are identified in the following documentation Group 1 You can use both the keypad and the command line interface to access the following parameters Ethernet address XL GPS contains a unique Ethernet or Media Access Control MAC address comprised of a unique number assigned to the manufacturer and a unique number assigned to the unit This is factory set and cannot be changed IP Address Sets a static Internet Protocol IP address for the unit Subnet Mask Sets a valid subnet mask used in IP addressing Subnetting allows for the more efficient allocation of network addresses and management of network traffic Default Gateway The address of the router that handles packets addressed to IP devices outside the local area network 10 100 BASE T
136. r Threshold using the THRESHOLD command To query the Time Error Threshold setting enter F 73 lt SP gt THRESHOLD lt CR gt lt LF gt 70 997 01530 01 Rev C 25 Jan 2008 The XL GPS responds F73 lt SP gt THRESHOLD lt SP gt lt nanoseconds gt lt SP gt ns lt CR gt lt LF gt where lt nanoseconds gt is the time error threshold in nanoseconds between 0 and 9999 To set Time Error Threshold enter a string the following format F73 lt SP gt THRESHOLD lt SEP gt lt nanoseconds gt lt CR gt The XL GPS will set the new time error threshold and returns the following string if the command is successful OK lt CR gt lt LF gt Set or query Timeout Delay using the TIMEOUT command To query the current setting enter F73 lt SP gt TIMEOUT lt CR gt lt LF gt The XL GPS responds F73 lt SP gt TIMEOUT lt SEP gt lt seconds gt lt SP gt s lt CR gt lt LF gt where lt seconds gt is the timeout in seconds between 0 and 86400 To set Timeout Delay enter a command string in the following format F73 lt SP gt TIMEOUT lt SEP gt lt seconds gt lt CR gt lt LF gt The XL GPS will set the new timeout delay and responds OK lt CR gt lt LF gt Led blinking can be ENABLED or DISABLED using the BLINK command To enable LED blinking enter F 73 lt SP gt BLINK lt SEP gt ENABLE lt CR gt The XL GPS responds OK lt CR gt lt LF gt To disable LED blinking enter F 73 lt SP gt BLINK lt SEP gt DISABLE lt CR gt The XL GPS responds
137. r more lt CR gt Carriage Return equivalent to pressing the Enter key on a keyboard OSC Oscillator type TCXO OCXO For example enter the following string F108 CR XL GPS responds example F108 OSCILLATOR CONFIG TCVCXO lt CR gt lt LF gt or OCXO F110 J1 Input TIET Note Time Interval Event Time TIET is an optional feature If purchased at the same time as the XL GPS it comes enabled on the system To purchase this option after you have purchased the XL GPS contact Symmetricom Sales See H Sales and Customer Assistance page 143 997 01530 01 Rev C 25 Jan 2008 93 F110 performs two separate functions e Config ure the J1 input port for a TIET signal Display TIET information Keypad J1Inp ut Config Displays DISABLE if the function has not been purchased and installed Displays TIET if the TIET option has been purchased and installed J1Sel such a ect Function If TIET is enabled select DISPLAY TIET MEAS to display TIET information s Time Interval or Event Time or select J1 INPUT CONFIG to configure the J1 for a TIET input signal Select TIET Measurement If DISPLAY TIET MEAS was selected select whether to display TIME I e Ji1linp 500 NTERVAL or EVENT TIMING on the front panel ut Impedance For short runs 200 ft select 100 KQ For long runs 2200 ft select Input Polarity Positive only Upon changin g the settings the last display pr
138. reshold 2 Element P5 80ms encodes a binary 1 when the error exceeds threshold 3 and P5 90ms when the error exceeds threshold 4 The time code resets as follows Days Reset Resets to day 1 after day 365 Leap Year Resets to day 1 after day 366 Alarm Drive Open Collector Max Voltage 25 VDC Max Current 50 mA Qty 1 Connector BNC female The open collector alarm output has the following states Off High Z Power off Off High Z Error major or minor enabled alarm fault On Low Z Normal no major or minor enabled alarm faults 997 01530 01 Rev C 25 Jan 2008 GPS Time and Frequency Reference GPS Time and Frequency reference configuration is via the Keypad Serial I O and Network port Frequency 1575 42 MHz L1 signal Code Coarse Acquisition C A code Tracking Up to 12 satellites Position Accuracy within 10 meters when tracking four 4 satellites 1 PPS Accuracy UTC USNO 30 nanoseconds RMS Time standard UTC Antenna input BNC female Antenna power 12 VDC Options Expansion Module 87 8034 The expansion module provides four independently configurable outputs The outputs are configured using jumper switch settings on the Expansion Module These are configured at the factory per the sales order and can also be configured by the user in the field The available output types are as follows IRIGB AM IRIGBDC Alarm 1PPS 1kPPS e 10 KPPS e 100 KPPS 1MPPS e 5MPPS e
139. roughout the European Union EU Summer Time begins and ends at 1 am UTC It starts the last Sunday in March and ends the last Sunday in October In the EU all time zones change at the same moment F69 Time Mode F69 Time Mode on page 61 Select the type of time output on the front panel display F8 F9 and F90 The four choices are as follows UTC Universal Coordinated Time differs from GPS Time by the addition of leap second cor rections to compensate for variations in the earth s rotation GPS time is derived directly from the GPS constellation and doesn t contain any leap second adjustments or other GPS to UTC corrections Standard Time is UTC plus a time zone offset For example Pacific Standard Time is UTC minus 8 hours Local Time is UTC with a time zone adjustment and a daylight saving time adjustment Using the Command Line Interface The next two sections show how to connect to the XL GPS using the serial and network ports Both Serial I O and the network port give the user access to the command line interface While the keypad interface provides a simple menu driven user interface the command line interface features e Additional functions that aren t available through the keypad Remote accessibility over a network through the standard network port To use the command line interface refer to the explanations and examples in the Command Line subsections for each function in the XL GPS User
140. rror threshold in nanoseconds 1 to 11 digits with or without leading zeros CR carriage return character LE line feed character 40 997 01530 01 Rev C 25 Jan 2008 For example to display the time quality status and flags enter F5 lt CR gt If F5 is enabled XL GPS responds example F5 ENABLE 00000001000 00000010000 00000100000 00001000000 lt CR gt lt LF gt If F5 is disabled XL GPS responds F5 DISABLE lt CR gt lt LF gt To enable time quality reporting and change the thresholds of the time quality flags enter F5 ENABLE 2000 20000 200000 2000000 lt CR gt XL GPS responds OK lt CR gt lt LF gt Note Leading zeros aren t required when entering new settings They are displayed in the readouts To disable time quality reporting F5 DISABLE lt CR gt XL GPS responds OK lt CR gt lt LF gt F6 Keypad Lock F6 Keypad Lock enables or disables the keypad preventing accidental changes to the XL GPS s settings When enabled the display responds KEYPAD LOCKOUT BY FUNC 6 when the user attempts to access any function other than F6 F6 remains available through the keypad at all times The factory setting for F6 Keypad Lock is disabled Command Line To display the Keypad Lock status send F6 lt CR gt XL GPS responds F6 lt S gt lt STATE gt lt CR gt lt LF gt 997 01530 01 Rev C 25 Jan 2008 41 where F ASCII character F 6 function number S ASCII space ch
141. s 997 01530 01 Rev C 25 Jan 2008 97 OK lt CR gt lt LF gt Single PPO pulse output For example to produce a a single pulse with duration of 1 second on January 1 enter F111 PPO 001 00 00 00 000000 001 00 00 01 000000 lt CR gt XL GPS responds OK lt CR gt lt LF gt Or for example to produce a single pulse with duration of 1 microsecond on January 1 enter F111 PPO 001 00 00 00 000000 CR XL GPS responds OK lt CR gt lt LF gt Repetitive PPO pulse outputs Repetitive PPO pulse output function can be used to produce repetitive pulses from once per year up to 100 000 per second To issue repetitive pulses using PPO wildcards are utilized in the Start Time and Stop Time fields Through the command line interface the user may place X or x in the time fields of the F111 command The X or x character is referred to as the wildcard in the PPO time fields The most significant non wildcard digit in the time field is used to specify the Start or Stop Time of the repetitive pulses which in turn specifies the pulse width of the repetitive pulses The least significant wildcard character the one to the immediate left of the most significant non wildcard digit specifies the period of repetition When specifying repetitive rates the Start Time must include the same number of significant digits as the Stop Time or an ambiguous output may occur Any time the clock reads a new time that matches the specified le
142. s lt SOH gt DDD HH MM SS mmmQ lt CR gt lt LF gt where SOH ASCII Start of Heading character CR ASCII Carriage Return character lt LF gt ASCII Line Feed character DDD Day of year HH Hours MI Minutes SS Seconds ASCII decimal point mmm Milliseconds Colon separator Q Time quality character table below The time quality character Q is one of the following characters SPACE Time error is less than time quality flag 1 s threshold Time error has exceeded time quality flag 1 s threshold Time error has exceeded time quality flag 2 s threshold Time error has exceeded time quality flag 3 s threshold Time error has exceeded time quality flag 4 s threshold Or A reference source is unavailable See F5 Time Quality Setup on page 39 and F13 Time Error on page 48 for more information When the unit responds to F11 lt CR gt with the current format string as shown in the following example the first character after the F11 is a blank separator it is not part of the format string 46 997 01530 01 Rev C 25 Jan 2008 To see the Time Output Format enter F11 lt CR gt XL GPS responds F11 DDD HH MM SS mmmQ lt CR gt lt LF gt To remove the day hour minute second microsecond or a character from the time output format other than the ASCII lt SOH gt CR or lt LF gt characters enter the following string repl
143. s F90 Code Output Configuration F100 Network Port Configuration amp XL GPS Firmware F100 EA Ethernet Address F100 IP IP Address F100 SM Subnet Mask F100 G Gateway F100 IC Network Port Settings F100 L LOCK UNLOCK Remote Lockout F100 L Remote Lockout Status 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 amp SNMP F100 J Factory Mode Jumper F100 K I L L Reboot F100 P Change User Password F100 PI PING F100 PN Change User Name 997 01530 01 Rev C 25 Jan 2008 K N S K N S K N S K N S K N S K N S K N S K N S K N S K N S K N S N S N S N S N S N S N S N S N S N S Display the XL GPS oscillator s phase offset drift and DAC values View clock and power supply fault status View the status of all the alarm indicators Enable disable alarms for each indicator Set alarm thresholds Enable or disable LED blink Configure settings for CODE time code output Configure the standard network port settings Display the Ethernet MAC address Configure the IP address Configure the subnet mask Configure the default gateway Display all the standard network port s settings Lock remote access to the XL GPS s standard network port Display the status of F100 LOCK Locked thr
144. s a GPS antenna can be placed in a window Equatorial facing e g south facing for users in the northern hemisphere windows provide the best visibility of satellites However if the equatorial facing window has large obstructions such as trees or buildings a window facing another direction with fewer obstructions may be better Metal window shades and special metallic window coatings may block GPS signals entirely 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 Mounting the GPS Antenna Mount the GPS antenna on an antenna mast recommended or on the peak of a building The GPS antenna kit includes special mounting brackets For the mast use 2 inch 5 08 cm diameter water pipe 997 01530 01 Rev C 25 Jan 2008 13 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 Notes The XL GPS requires a 12 Volt compatible antenna Antennas not rated for 12 V will be damaged Usean antenna splitter to connect a single antenna to multiple receivers Don t use a
145. s Guide and Reference Manual Connecting to the Serial Port Complete the following steps to set up and use the Serial Port to communicate with the XL GPS Verify that the XL GPS s serial port settings are as follows Keypad ENTER 4 ENTER Use the UP DOWN ARROWs Serial Port RS232 e Baud rate 9600 Data bits 8 e Parity NONE e Stop bits 1 Note Parity set to NONE is only valid when Data Bits is set to 8 18 997 01530 01 Rev C 25 Jan 2008 Connect a null modem cable from the PC s serial port to the XL GPS s SERIAL I O port If needed configure your PC s terminal emulation program to match the serial port settings above 9600 8 N 1 Set Flow Control to None One terminal emulation program HyperTerminal is usually found in Microsoft Windows under Programs Accessories or Programs Accessories Communications Initiate a serial port connection between the terminal emulation program and the XL GPS The Serial Port connection does not require you to log in Once connected press the Enter key on your keyboard to get a command prompt From the command prompt gt you can use the functions described in the Function Reference section of the XL GPS User s Guide and Reference Manual The Command Line sub sections provide instructions and examples Troubleshooting Tip If the terminal emulation software has trouble displaying XL GPS responses looks like the unit doesn t r
146. s and the corresponding mask object in the configDataMasks group is enabled Future Expansion This section outlines the possibilities for future expansion of the Symmetricom Enterprise MIB The general overview is that new objects may be added to any location Existing objects may not be altered in order to maintain backward compatibility There are two varieties of expansions to consider additional products and additional features within an existing product 997 01530 01 Rev C 25 Jan 2008 129 This model makes adding additional products and maintaining compatibility a straightforward process Each additional product will be given a branch in the tree under enterprises SymmetricomTtm products For now we have only enterprises SymmetricomTtm products xlGps and enterprises SymmetricomTtm products nic56k Future products will take the form enterprises SymmetricomTtm products product XXX Each product will use enterprises SymmetricomTtm products product XXX as its system object identifier Each product will also define an enterprises SymmetricomTtm products product XXX xxxTrap subgroup for the definition of all enterprise specific traps that can be generated by that product Making additions to the XL GPS product MIB is also a straightforward task with several caveats The first is that additions may be made but the object identifier and the semantics of existing objects may not be altered A likely place for additions is under the systemStatusDet
147. se width enter F111 PPO XXX XX XX XX X00005 XXX XX XX XX X00055 CR XL GPS responds OK lt CR gt lt LF gt Or for example to produce a repetitive one minute pulse occurring every hour enter F111 PPO XXX XX 10 00 000000 XXX XX 11 00 000000 CR XL GPS responds OK lt CR gt lt LF gt 997 01530 01 Rev C 25 Jan 2008 99 Or for example to produce a repetitive one microsecond pulse occurring on every hour enter F111 PPO XXX XX 10 00 000000 lt CR gt XL GPS responds OK lt CR gt lt LF gt F113 J3 Input Freq Meas Note Frequency Measurement is an optional feature If purchased at the same time as the XL GPS it comes enabled on the system To purchase this option after you have purchased the XL GPS contact Symmetricom Sales See H Sales and Customer Assistance on page 143 Use function F113 to configure J3 for a Frequency Measurement Freq Meas input to display Frequency Measurement information or to disable J3 inputs F113 offers the following keypad settings J3 Input Configuration FREQ MEAS DISABLED Displays Disabled if the Frequency Measurement option has not been installed Displays Freq Meas if it has J3 Select Function DISPLAY FREQ MEAS J3 INPUT CONFIG Select to display the Freq Meas information of to configure the Freq Meas input on J3 J3 Input Frequency 1 MHz 5 MHz 10 MHz Select the Freq Meas input frequency J3 Input Impedance 1kO 50 Select the input impe
148. sion numbers of the firmware in the XL GPS Bootloader Software firmware File System Project Rev FPGA Command Line Use Command Line Function F18 to obtain the system s firmware version information For example enter F18 CR XL GPS responds F18 BOOTLOADER 192 8000 SOFTWARE 192 8001 FILE SYSTEM 192 8002v1 80 PROJ REV 1 80 FPGA 184 8000V50 F50 GPS Receiver LLA XYZ Position Use function F50 to display the current GPS position Specifically Use function F50 to Select the positional coordinate system Latitude Longitude Altitude LLA or XYZ Earth Centered Earth Fixed XYZ coordinates based on WGS 84 If LLA is selected Altitude Mode shows the elevation in meters WGS 84 Warning This GPS receiver is optimized for timing versus position accuracy Therefore position information on this unit is not valid for navigation and other critical applications 997 01530 01 Rev C 25 Jan 2008 49 Keypad When Position Mode is LLA the position of the antenna is displayed in degrees minutes and seconds using the following format lt SIGN gt lt DEG gt lt gt lt MIN gt lt SEC gt where SIGN NorS for latitude E or W for longitude for negative altitude and lt S gt or for positive altitude lt DEG gt two digit degrees for latitude or three digit degrees for longitude lt MIN gt two digit minutes ASCII chara
149. strated below 997 01530 01 Rev C 25 Jan 2008 105 Following initialization the front panel display of an XL GPS with only one GPS receiver GPS Status Unlocked would show the following UNLOCKED GPS PRI LOCAL 365 16 01 05 1969 With the GPS receiver as a valid time reference the following changes would take place en e The asterisk indicating the absence of a valid reference would disappear e The system status would change to locked The front panel status display would look like this OCKED GPS PRI LOCAL 293218221329 2005 Once the GPS receiver is a valid time reference it requires at least one good current satellite to remain a valid time reference If good current GPS satellites become temporarily unavailable GPS status changes to unlocked and the XL GPS stops using the receiver as a valid time reference Typically when a good current satellite becomes available again GPS status locks and the receiver becomes a valid time reference almost immediately Typically the receiver it does not need extra time to resolve its current position unless it is being used in a very mobile dynamic environment such as an aircraft If the unit is powered cycled the receiver repeats the complete position and leap second acquisition process before GPS status locks Note GPS satellite visibility and signal strength affect the ability of the GPS receiver to lock and provide valid time to the XL GP
150. t Freq Meas 2 2 2 25 9 genui rREPEes RR Sr 100 F117 Factory Configuration sneer ese tiers eed ae ee eee Pee seeded 103 F119 GPS Receiver Configuration sisse bee eee ne 104 F126 Options Key Entry 22 22 acces uo e reos s keke eae a wae 108 6 GPS M12 Receiver 87 8028 2 0oooooooooooommnnmnnms 109 INTOCUEION ahud ES SSA A ee ee aN Ns 109 Specifications ida HT 109 7 XL GPS Generated Messages 2000 e cece ee eee eee eens 111 Error Messages 15 0 ote herede a dex Soudan eee a 111 Informational Messages oqs crearet eee A eee a eet 113 997 01530 01 Rev C 25 Jan 2008 iii A Using F100 Configuration 0 ooooooooonnnnnnnan 114 Configuring NTP 8 SNMP Parameters 0 00000 114 Overview OF Steps urraca ra poe aid 114 Set up the FTP SESION ck A EA 114 Get the IP Address of the FTP Server Workstation 114 Copy the Configuration Files to the FTP Server 115 Edit the Configuration Files i pe px Ru RE ERE 116 Move the Configuration Files Back to the XL GPS 116 B Upgrading System Firmware esee 118 Overview of Procedure 13 2 acre Rem E nem EISE Gero xad e xd 2 118 Setup the FIP Servel s 31 totes xv ex eer be en eb 118 Open a Command Line Session on the XL GPS 118 Upgrade the Firmware sssssss eee I rn 119 Troubleshooting 22 7 deta e are 121 FAQ sucess Gals slg 100
151. t H Sales and Customer Assistance page 143 To display the current Base T setting enter F100 lt S gt BASET lt CR gt where F ASCII character F 100 unit function number lt S gt Space BASET specify Base T command CR input line terminator XL GPS responds F100 BASET 10T lt CR gt lt LF gt To set the Ethernet port to automatically negotiate the maximum connection speed enter F100 lt SP gt BASET lt SP gt AUTO lt Enter gt To set the Ethernet port s connection speed to 10Base T enter F100 lt SP gt BASET lt SP gt 10 lt Enter gt XL GPS responds OK lt CR gt lt LF gt RESETING THE UNIT lt CR gt lt LF gt PLEASE WAIT lt CR gt lt LF gt F100 L LOCK UNLOCK Remote Lockout Use function F100 LOCK or UNLOCK to enable disable remote access to the command line interface through the network port Use function F100 L to display the status of Remote Lockout Remote Lockout can also be set using F100 on the keypad interface The factory setting is Unlocked To unlock remote lockout use the keypad or the serial port s command line interface The network port is not available because it has been locked Warning F100 L and F100 LOCK terminates any active network sessions and prevents future network sessions To unlock F100 L or F100 LOCK use the serial port command line interface or the keypad display To lock the unit from a remote location enter F100 LOCK lt CR gt
152. t look like ntpd d d d b k etc ntp keys Important lines in the ntp conf file of the ntp client not server are trusted key 1 2 If you do not use MD5 authentication remove from disable auth 997 01530 01 Rev C 25 Jan 2008 137 E Time Code Formats The following section provides a summary description of the three time code types used by the XL GPS The definitive IRIG time code specification the Range Commanders Council s IRIG Serial Time Code Formats IRIG Standard 200 98 is available on the Web at http jcs mil RCC manuals 200 Overview Please refer to the Input and Output specifications in the front of the manual for details regarding the voltage amplitudes modulation ratios of the following time codes provided or used by the Model XL GPS IRIG Introduction The document 200 95 IRIG STANDARD TIME FORMATS by the Telecommunications Working Group Inter range Instrumentation Group Range Commanders Council describes IRIG B time code The standard time formats of IRIG codes were designed for use in missile satellite and space research programs Use of these codes facilitates efficient interchange of test data These formats are suitable for recording on magnetic tape oscillographs film and for real time transmission in both automatic and manual data reduction IRIG B from the Model XL GPS is suitable for remote display driving magnetic tape recording and many other uses IRIG codes in the strict sense e
153. t the FTP server s lt lt Local Server is running After XL GPS receives the configuration files it reboots and goes through the normal startup process End of Procedure 997 01530 01 Rev C 25 Jan 2008 117 o o B Upgrading System Firmware Caution Consideration must be given to the firmware and the hardware version numbers of the XL GPS and it s optional components Consult with Symmetricom s Customer Service department before performing upgrades This section explains how to completely upgrade the system firmware This is done using the F100 BH F100 BUB F100 BU and F100 BF commands Overview of Procedure Set up a network connection between your XL GPS and the FTP server Set up an FTP Server with the firmware upgrade files Open a command line session to the XL GPS Install the firmware version 8 files Reboot the XL GPS Note f your system s NTP and SNMP configuration files ntp conf ntp keys snmp conf have been customized make backup copies and later re install those configuration files See A Using F100 Configuration on page 114 Set up the FTP Server To save time and trouble download a preconfigured FTP server from http www ntp systems com zip warftpd1 zip and extract it to the C drive on your workstation Otherwise customize your existing FTP server setup as described in this section When performing these operations the user issues command line instructions to the XL GPS The X
154. ter F 04 function number S ASCII space character one or more SEP One or more separator characters either space comma or tab RS Interface type RS 232 or RS 422 lt BR gt Baud Rate with possible values 1200 2400 4800 9600 or 19200 lt DB gt Data Bits with possible values 7 or 8 lt P gt Parity with possible values even or odd or none SB Stop Bits with possible values 1 or 2 CR Carriage return character lt LF gt Line feed character Note Parity NONE is only available valid when Data Bits is set to 8 For example to display the serial port settings send F4 lt CR gt XL GPS responds F4 232 9600 8 none 1 lt CR gt lt LF gt To set the serial port settings send F4 422 9600 7 even 1 lt CR gt XL GPS responds OK lt CR gt lt LF gt F5 Time Quality Setup Use function F5 to enable disable time quality reporting and to set the thresholds of the four time quality flags How time quality reporting works If the GPS timing reference becomes unavailable to discipline or steer the oscillator the oscillator begins to drift and gradually accumulates time error The XL GPS estimates time error based on the oscillator type and on the degree of steering the DAC value that was being applied to the oscillator before the timing reference became unavailable As the estimated time error grows exceeding the threshold of the four Time Quality Flags set in F5 th
155. the expansion module OCXO Oscillator Rack Mount Kit 2 mounting brackets for 1 U chassis 4 flat head Phillips screws Slide Mount Kit 142 997 01530 01 Rev C 25 Jan 2008 H Sales and Customer Assistance Symmetricom s Sales and Customer Assistance Centers are a centralized resource to handle all your customer needs Our Centers are staffed with logistics personnel to handle product quotes order status and scheduling as well as technical personnel for technical support installations or service quotes Technical support is operated as a fee based service either under contract or on an hourly basis Visa Mastercard are accepted as well as Purchase Orders from established customers Worldwide Telephone 1 978 232 1477 US Assistance Center For the United States Canada Latin America Caribbean and the Pacific Rim including Asia Australia and New Zealand call Tel 1 888 367 7966 1 888 FOR SYMM or 1 408 428 7907 Worldwide Customer Service For product quotes service quotes installations order status and scheduling 7 00 am to 5 00 pm Pacific Time Monday through Friday excluding U S Holidays Technical Support For technical support 24 hours a day 7 days a week every day of the year contact us at support symmetricom com EMEA Assistance Center For Europe Middle East and Africa call Tel 44 0 1189 699 799 or 1 408 428 7907 Worldwide Customer Service For product quotes service quotes i
156. the following output string OK lt CR gt lt LF gt Then during the file burning process output strings will be displayed on the terminal to provide status to the operator The following is an example of a successful F100 BUFP command execution BURNING FILE 182 9004V001 bin TO PARTITION 3 SECTOR 10 FILE 166792 BYTES PARTITION 262132 BYTES 63 USED SEC 10 RE 0 SEC 11 RE 0 SEC 12 RE 0 SEC 13 RE 0 SEC 14 RE 0 SECs l5 RE 0 SEC 16 RE 0 FLASH SUCCESSFULLY PROGRAMMED To load the FPGA program from the target flash to the FPGA a reboot of the XL GPS is required for the new FPGA program to take effect The XL GPS can be rebooted via power cycle or by issuing the F100 KILL command on the serial port interface 86 997 01530 01 Rev C 25 Jan 2008 F100 CONFIG Configure NTP amp SN MP Notes See A Using F100 Configuration on page 114 NTP is an optional feature If purchased at the same time as the XL GPS it comes enabled on the system To purchase this option after you have purchased the XL GPS contact Symmetricom Sales See H Sales and Customer Assistance on page 143 F100 CONFIG GET instructs the XL GPS unit to transfer its NTP and SNMP configuration files to an FTP server After editing the NTP and SNMP configuration files on the FTP server the user transfers them back to the XL GPS using the F100 CONFIG SET command Open a Telnet session with the
157. the user set Time Threshold Note With Time Threshold set to zero the unit applies a default value of 150 nS 66 997 01530 01 Rev C 25 Jan 2008 LED Blink When LED Blink is enabled the Alarm Status LED on the front panel blinks when it is green or amber The LED does not blink when it is red even if LED Blink is enabled Some users disable LED Blink to ensure that the LED s color state is displayed without interruption Timeout and Timeout Delay Timeout and Timeout Delay can be used to prevent short term Time Error faults from triggering Time Error alarms Timeout Disabled All Time Error faults trigger an alarm regardless of duration Timeout Enabled Only Time Error faults that last longer than the Timeout Delay measured in seconds trigger an alarm If a Time Error fault clears and returns to an OK state before the Timeout Delay has elapsed the countdown stops and no alarms are triggered All Time Error faults start the Timeout Delay countdown from the beginning i e Timeout Delay does not keep a countdown tally for multiple Time Error faults Power On Alarm Suppress Power On Alarm Suppress prevents all F73 alarms from occurring for a specified interval after the unit starts up The factory default setting is 300 seconds five minutes When that interval ends current and new alarms are reported normally NTS OK NTS is operating nominally Fault NTS is not operating correctly Contact Symmetricom Custom
158. tion will ap pear In the SNMP Configuration popup set the Community field to public the Set Community field to private and the Retries field to 0 XL GPS Configuration SNMP Configuration Follow the manual to load the snmp conf configuration file into the XL GPS The IP address of the HP OpenView PC must be in both the public and private communities Test Procedure Testing Get 1 From the Network Node Manager root level double click the icon Internet Select the icon corre sponding to your test subnet e g 192 168 11 and double click Double click the Segment1 icon 2 Select the icon labeled NIC by single clicking with the mouse 3 Select the menu item xlGps gt Status xIGps gt Configuration then xIGps gt Faults Verify the val ues by comparing with the output of the keypad display Testing Set 1 Follow Get Testing procedure steps 1 2 2 Select the menu item Tools gt SNMP MIB Browser A popup titled Browse MIB will appear 3 In the Browse MIB popup descend the MIB tree to iso gt org gt dod private gt enterprises gt symmetricomTtm gt products gt xlGps gt xIGpsSystem gt systemFault gt systemFaultConfig gt systemFaultConfigMasks by clicking the symbol next to each entry 4 In the Browse MIB popup select the maskPlISynthesizer entry In the MIB Instance field type O In the S
159. tructure of Symmetricom s Enterprise MIB is as follows Symmetricom 1896 TrapMsg 1 ntp 2 ntsControl 3 gps 4 acts 5 124 997 01530 01 Rev C 25 Jan 2008 For the XL GPS groups 1 2 3 4 and 5 have been deprecated and a new group 6 products has been added For the XL GPS and future Symmetricom products groups 1 through 5 will be absent from the XL GPS Enterprise MIB definition supplied with the unit The top structure for the XL GPS is TrueTimeEnt 1896 products 6 Additional xli iy Products xliTrap xliSystem xliMainCard xliOptionCards 0 1 2 3 E Additional systemFau systemStatus nt i ps 2 Option Cards systemAlarmData es 1 systemFault systemStatus Config Detail 2 2 systemFault History 3 Note For the figures in this chapter substitute xlgps for xli The level under the XL GPS group is divided into three groups the first two of which will be explained later The optionCardGroup has all the available option cards under it The current traps message group is located under the fault The ntp group is under the x GosMainCard group as an option and is related only to NTP on the standard network port on the XL GPS s Main CPU card This MIB structure also provides a useful definition for the system object ID SNMP managers may use the system object ID
160. ty Statement Statement of Volatility for the XL GPS Model 1530 602 Memory Size Memory Type _Volatile Non Volatile User Data IC Location 16 Mb SRAM Non Volatile 8Mb EEROM Volatile No U25 Yes U39 This document only pertains to the XL GPS main processor board the 86 8000 Default parameters are stored one at a time through the function commands There is no global clear command to restore default conditions Default conditions are listed in the XL GPS user manual 997 01530 01 Rev C 25 Jan 2008 3 Installation Configuration Installing the GPS Antenna For XL GPS units include a standard GPS receiver antenna and antenna cable Install as described below Selecting a GPS Antenna Site Outdoors Select a site that e sthe highest point available e Offers a full 360 view horizontally to within 10 vertically of the horizon e Is higher than neighboring buildings obstructions e s protected from strong radio frequency RF and microwave transmissions e sset away from RF reflective surfaces that cause multipath interference e sset3 ft 1 m away from other GPS antennas Mounting the antenna between tall buildings or next to walls and equipment Cable runs from the antenna to the receiver that exceed the specified length e Patching multiple cables together to make a single cable run Running the cable through bulkheads and along side high energy cables e Crimping or damaging the cable For test situation
161. urements in order to eliminate unreliable signal information TRAIM Active The TRAIM mode is active and working In Dynamic Mode The system has been instructed by the user that its position could change and has set the GPS mode to Dynamic Mode see F53 GPS Operation Mode on page 55 e Stop Site Survey The receiver has finished checking for changes in its static position e Stop TRAIM The receiver has completed TRAIM monitoring Dynamic Mode The position is being resolved on an ongoing basis Command Line To obtain the status of the GPS Receiver enter F119 lt S gt S lt CR gt For example enter F119 S lt CR gt XL GPS responds example F119 lt CR gt lt LF gt GPS PART NUMBER 87 8028 2 lt CR gt lt LF gt SOFTWARE 230 01510 04v1 9 lt CR gt lt LF gt FPGA 230 01510 01 lt CR gt lt LF gt GPS STATUS LOCKED lt CR gt lt LF gt or UNLOCKED GPS ANTENNA OPEN lt CR gt lt LF gt or SHORT or OK GPS ACQUISITION STATE POSITION HOLD or one of the following DYNAMIC MODE STOP SITE SURVEY STOP TRAIM START SITE SURVEY SURVEY POSITION POSITION HOLD TRAIM ACTIVE 997 01530 01 Rev C 25 Jan 2008 107 where F ASCII character F 119 function number lt S gt ASCII space character one or more lt CR gt lt LF gt line terminator either a carriage return and line feed for output strings or a carriage return only
162. y 113 Display Configuring Time 17 Distribution Cable Delay 53 DST Mode 58 E EA 76 Editing MD5 keys on the NTP Client 136 Editing ntp conf 135 EMEA Assistance Center 143 ERROR 01 VALUE OUT OF RANGE 111 02 SYNTAX 111 03 BAD MISSING FIELD 111 Action get or set is not specified 112 Can t create netdevice 111 Can t open dest file 112 Can t open source file 112 Can t set host ip 111 Can t write file 112 Configuration failed 112 Configuration type is not specified 112 Invalid Command 111 Error Time 48 Error Messages 111 Ethernet Address 76 Expansion Module configuring 20 installing 20 Expansion Module 87 8034 8 F F1 Time Zone 17 34 F100 Network Port amp XL GPS Software 74 F100 BASET 10 100 BASE T 79 146 997 01530 01 Rev C 25 May 2008 F100 BF Burn File System 85 F100 BH Burn Host 83 F100 BU Burn 84 F100 BUB Burn BootLoader 83 F100 BUFP Burn FPGA Firmware 85 F100 CONFIG Configure NTP amp SNMP 87 F100 CONFIG Configure NTP amp SNMP Parameters 87 114 F100 EA Ethernet Address 76 F100 G Gateway 78 F100 IC Network Port Settings 79 F100 IP IP Address 76 F100 J Factory Mode Jumper 88 F100 K I L L Reboot 89 F100 L Remote Lock Status 81 F100 LOCK UNLOCK Remote Lockout 80 F100 P Change User Password 90 F100 PI PING 91 F100 PN Change User Name 91 F100 SM Subnet Mask 77 F100 ST Self Test Status 82 F108 Oscillator Configuration

Symmetricom XL-GPS GPS Receiver User Manual

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