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Symmetricom XL-GPS manual

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Table of contents for the manual

  • Page 1

    XL-GPS T ime & Frequency System User Guide 997-01530-01, Re v . C, January 2008[...]

  • Page 2

    Notices Symmetricom, Inc. T iming T est & Measurement 3750 We stwind Blvd. Santa Rosa, CA 95 403-1053 http://www .symmetricom.com Copyright © 2006 Symme tricom, Inc. All rights reserved. Printed in U.S.A. All product names, service marks, tr ade marks, and registered tradema rks used in this docume nt are the prop erty of their respective owne[...]

  • Page 3

    997-01530-01, Rev. C-25, Jan 2 008 i 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS T able of Contents Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [...]

  • Page 4

    ii 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 3: Installation/Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 Installing the GPS Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 Selecting a GPS Antenna [...]

  • Page 5

    997-01530-01, Rev. C-25, Jan 2 008 iii 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS F51 – GPS Antenna Cable Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 F52 – Distribution Cable Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 F53 – GPS Operati[...]

  • Page 6

    iv 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 A: Using F100 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114 Configuring NTP & SNMP Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114 Overview of Steps . . . . . . . . .[...]

  • Page 7

    997-01530-01, Rev. C-25, Jan 2 008 v 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS F: World Map of Time Zones: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141 G: Part Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142 H: Sales and Custome[...]

  • Page 8

    vi 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1[...]

  • Page 9

    997-01530-01, Rev. C-25, Jan 2 008 vii 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS Pr eface Limited W arranty Each new product manufactured by Symmetricom is warrante d for defects in material or workmanship for a period of one year from date of shipment (“Limit ed W arranty”). Defects in material or workmanship fou[...]

  • Page 10

    viii 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 Pr oprietary Notice This document, whether p atentable o r non-patenta ble subject matter , embodies propriet ary and confidential information and is the exclusive property of Symmetricom, Inc. It may not be reproduced, used or disclosed to [...]

  • Page 11

    997-01530-01, Rev. C-25, Jan 2 008 1 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1: Overview of the XL-GPS T ime and Fr equency Receiver Pr oduct Description and Features The XL-GPS T ime and Frequency Receiver is high-pr ecision time and frequency system that generates time and frequency output s from its GPS-discipli [...]

  • Page 12

    2 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 • 1 MPPS • 5 MPPS • 10 MPPS • Optional Programmable Pulse • Optional Alarm Relay In addition, the following sof tware-enabled optional features can be purchase d and enabled using a sof tware key at any time: • Network T ime Server [...]

  • Page 13

    997-01530-01, Rev. C-25, Jan 2 008 3 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 2: System Specifications Chassis The chassis is a 19-inch rack-mounte d 1U chassis. Envir onmental T ime and Frequency Accuracy GPS Reference T ime and frequency accuracy/stability while locked to a GPS timing reference: Size: 1.75 in. x 17[...]

  • Page 14

    4 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 AC Power Supply Input S tandard I/O The following specificati ons apply to the connectors on the Main CPU card. RS-232/RS-422 Interface The standa rd serial data port is a bi-direct ional EIA st andard RS 232C interface. The serial dat a port i[...]

  • Page 15

    997-01530-01, Rev. C-25, Jan 2 008 5 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS Network Port 10/100 The Ethernet port interface is: J1 - Optional TI/ET The TI/ET configuration is via the Keypad, Serial I/O , and Network port. J1 accept s an external 1 PPS or Event input signal and measures it a gainst the sy stem-deriv[...]

  • Page 16

    6 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 J2 - Optional Programmable Pulse Out (PPO) The PPO allows generation of a pre cisely synchroniz ed trigger pulse at an arbitrary time and with arbitrary pulse width in integer multiples of 1 μ S . The rising edge of the trigger output can be p[...]

  • Page 17

    997-01530-01, Rev. C-25, Jan 2 008 7 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS Code Out The default output is IRIG-B-120 AM. Configuratio n is via the Keypad, Serial I/O, and Network port. Five flags are encoded in the control function segm ent of the IRIG B code. The first flag encoded at element P5+40ms is the LOCK [...]

  • Page 18

    8 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 GPS T ime and Frequency Refer ence GPS T ime and Frequency reference co nfiguration is via the Keypad, Seria l I/O, and Network port. Options Expansion Module (87-8034) The expan sion module provides four independent ly-configurable output s. T[...]

  • Page 19

    997-01530-01, Rev. C-25, Jan 2 008 9 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS IRIG Code Out Alarm Rates Optional Programmable Pulse Optional Alarm Relay NTP The stand ard network interface of the XL-GPS can be opti onally enabled at the factory , or by the user in the field, to become a Network T ime Server (NTS) to [...]

  • Page 20

    10 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 Support for version 3.0 of the NTP , RFC 1305 as well as the Simple Network T ime Protocol (SNTP), RFC1361 is available. In addition, the NTS wi ll respond to TIME p rotocol requests, RFC868. The NTS will respond to time sync hro nization requ[...]

  • Page 21

    997-01530-01, Rev. C-25, Jan 2 008 11 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS Oscillators S tandard TCVCXO Optional OCXO Certification Calibration S tatement This unit does not co ntain user-serviceable p arts and does not require calib ration. Accuracy: < 1 x 10 -12 @ 1 day when locked to GPS Frequency/T iming S[...]

  • Page 22

    12 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 V olatility S tatement S t atement of V olatility for the XL-GPS Model 1530-602. This document only pert ains to the XL-GPS main processor board, the 86-8000. Default parameters are stored one at a time through the function commands. There is [...]

  • Page 23

    997-01530-01, Rev. C-25, Jan 2 008 13 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 3: Installation/Configuration Installing the GPS Antenna For XL-GPS units in clude a standard GPS receiver , antenna, and antenna cable. Inst all as described below . Selecting a GPS Antenna Site Outdoors Select a site that... • Is the h[...]

  • Page 24

    14 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 or conduit that is rigid enough to withstand high winds without fle xing. Use guy wires to stabilize mast s longer than 10 ft. (3.048 m). Notes: • The XL-GPS requires a 12 V olt-compatible antenna. Antennas not rated for 12 V will be damaged[...]

  • Page 25

    997-01530-01, Rev. C-25, Jan 2 008 15 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS GPS Signal S trength Requirements Refer to Figure 2: The required g ain at the GPS receiver ’s ANTENNA connector is greater than 20 dB and less than 36 dB. A st andard 150 foot length of RG-59 coax cable of has a loss of 16- 21 dB, which[...]

  • Page 26

    16 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 – J2 Output (Rate, PPO) ” on page 96 , “ F1 13 – 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 W arning: Ensure that a disconnect devi[...]

  • Page 27

    997-01530-01, Rev. C-25, Jan 2 008 17 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS Notes: • T o prevent remote network access to the XL-G PS, 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 t hrough the keypad i[...]

  • Page 28

    18 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 the Eastern T ime Zone portion of th e S tate of Indiana, and most of Arizona (Navajo Indian Reservation in observes DST). - Throughout the European Union (EU), Summer T i me begins and ends at 1 am UTC. It starts the last Sunday in March, and[...]

  • Page 29

    997-01530-01, Rev. C-25, Jan 2 008 19 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS Connect a null-modem cable from the PC’ s se rial port to the XL-GPS’s “SERIAL I/O” port. If needed, configure your PC’ s terminal emulation pr ogram to match the serial port settings above (9600, 8, N, 1). Set Flow Control to ?[...]

  • Page 30

    20 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 Installing the Expansion Module W arning: Inst alling and removing the exp ansion module can expose dangerous volt ages that can cause electric shock resulting in injury o r death. Disconnect all power before inst alling or removing the option[...]

  • Page 31

    997-01530-01, Rev. C-25, Jan 2 008 21 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS at the factory per the customer sales order . T o change the configuration, identify the jumper at JP2 that corresponds to the output you are configuring. For example, jumper J4 AM corresp onds to the J4 output. T o generate IRIG-B AM time[...]

  • Page 32

    22 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 generate 10 MPPS and the proced ure would be complete. The same method can be used to configure any of the output s. Note : PPO and Alarm are only availabl e if those options have been purchased a nd are enabled using F126 – Options Key Entr[...]

  • Page 33

    997-01530-01, Rev. C-25, Jan 2 008 23 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS Rack Mounting the XL-GPS The XL-GPS comes with the following part s needed to mount the XL-GPS securely in an y EIA standard 19-inch (48.26-cm) rack: • 2 mounting bracket s • 4 flat-head, Phillips screws Have the following items ready [...]

  • Page 34

    24 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 Note: Ensure that the ambient o perating temperature does not exceed +50 ° C. Install the XL-GPS chassis so that the top and bottom h oles are unobstructed and have suf ficient clearance to allow 6 cfm of air to pa ss through the chassis. T o[...]

  • Page 35

    997-01530-01, Rev. C-25, Jan 2 008 25 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 4: User Interfaces The XL-GPS features two user interfaces for controlling the XL-GPS’s functions: • A keypad interface o n the front panel of the XL-GPS • A command line interface available through the serial an d network ports Ther[...]

  • Page 36

    26 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 T ime Display related functions: • Select between the 12 or 24 hour format d isplayed: “ F2 – 12/24 Hour Format ” on page 35 . • Select between Local, S tandard, UTC, and GPS time: “ F69 – T ime Mode ” on page 61 . T ime relate[...]

  • Page 37

    997-01530-01, Rev. C-25, Jan 2 008 27 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS Pressing the UP ARROW key increment s to the nex t function, F2 - 12/24 HOUR FORMA T , and so on. Pressing the DOWN ARROW key skips to the hig hest available function, F126 OPTIONS KEY ENTR Y , and, from there, decrement s through the func[...]

  • Page 38

    28 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 T o open a function using ENTER: T o open a function using MENU: T o change the settings in a function, and not save them: Other ways to abandon new settings in a f unction: Press Result ENTER Displays the “ FUNCTION ” prom pt 2 Enter the [...]

  • Page 39

    997-01530-01, Rev. C-25, Jan 2 008 29 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS T o enter numeric values in a function: Command Line Interface T o 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 p age [...]

  • Page 40

    30 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 If you try to use a function t hat is not accessible from the guest login, you will see a message such as “Access denied” or “Command canceled”. Logging Out Y ou can log out using the following commands: logout logoff exit quit Changin[...]

  • Page 41

    997-01530-01, Rev. C-25, Jan 2 008 31 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS f100 IP:192.168.46.1 50 SM:255.255. 255.0 G:192.168.46. 1 >f100 ic f100 IP:192.168.46.1 50 SM:255.255. 255.0 G:192.168.46. 1 > Network port session: WELCOME TO SYMMETRIC OM NETWORK INT ERFACE! USER NAME: operator PASSWORD: ***** NETW[...]

  • Page 42

    32 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 5: Function Refer ence Function Summary The following summary list s all the XL-GPS functions, identifies the user interface s from which each one is available, and provides a br ief descrip tion of the function. Available from: K = keypad, N [...]

  • Page 43

    997-01530-01, Rev. C-25, Jan 2 008 33 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS F71 – Oscillator S tatistics K, N, S Display the XL-GPS oscilla tor ’s phase, of fset, drift, and DAC values F72 – Fault S tatus K, N, S V iew clock and power supply fault st atus F73 – Alarm Control / S tatus K, N, S View the stat[...]

  • Page 44

    34 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 F1 – T ime Zone Offset Use function F1 to display an d set the time zone of fset between your S tandard T ime zone and Unive rsal T ime Coordinated (UTC). Refer to “ F: W orld Map of T ime Zones: ” on page 141 . F1 is the basis for S tan[...]

  • Page 45

    997-01530-01, Rev. C-25, Jan 2 008 35 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS where: For example, to set the time zone of fset, enter: F1 –8:00<CR> XL-GPS responds: OK<CR><LF> T o verify the change, enter: F1<CR> XL-GPS Responds: F1 –8:00<CR><LF> F2 – 12/24 Hour Format Use f[...]

  • Page 46

    36 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 Note: Local time is commonly disp layed in both 12 and 24 formats. Th e specifications for S t andard, UTC, and GPS call for using the 24-hour forma t. App lying the 12-hour format to any time type leads to ambiguous time not ation. For exampl[...]

  • Page 47

    997-01530-01, Rev. C-25, Jan 2 008 37 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS F3 – T ime & Date When an optional oscilla tor is used because a GPS signal is unavailabl e, use function F3 to manually set the XL-GPS system clock’ s time and date. When the XL-GPS is using GPS as timing refere nce, setting F3 ma[...]

  • Page 48

    38 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 For example, to display the date and t ime, send: F3<CR> XL-GPS responds: F3 UTC 01/01/20 02 00:05:34<CR ><LF> T o set the time and date, send: F3 UTC 07/14/2002 18 :20:30<CR> Note: Only valid times and dates are accept[...]

  • Page 49

    997-01530-01, Rev. C-25, Jan 2 008 39 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS where: Note: Parity - NONE is only available/valid wh en Data Bits is set to 8. For example, to display the serial port settin gs, send: F4<CR> XL-GPS responds: F4 232 9600 8 none 1<CR><LF> T o set the serial port setting[...]

  • Page 50

    40 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 corresponding time quality characters in text output s of F8 and F9. (See “ F8 – Continuous T ime Once- per-Second ” on p age 42 and “ F9 – Ti me On Request ” on page 44 ) In addition, a time quality indicator is encoded in out put[...]

  • Page 51

    997-01530-01, Rev. C-25, Jan 2 008 41 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS For example, to display the time qualit y status and flags, enter: F5<CR> If F5 is enabled, XL-GPS responds (example): F5 ENABLE 0000000100 0 00000010000 00000100000 0000100 0000<CR><LF> If F5 is disabled, XL-GPS responds[...]

  • Page 52

    42 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 where: For example, to display the Keyp ad Lock status, send: F6<CR> XL-GPS responds: F6 DISABLE<CR><LF> T o enable Keypad Lock, send the following st ring: F6 ENABLE<CR> XL-GPS responds: OK<CR><LF> T o disa[...]

  • Page 53

    997-01530-01, Rev. C-25, Jan 2 008 43 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS reference source and synchronize s with it, F8 displays the new time-of-year information. The transition looks like this: 365:16:00:14? 365:16:00:15? 365:16:00:16 365:16:00:17 199:13:56:03 199:13:56:04 In the first two lines above, the uns[...]

  • Page 54

    44 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 The time quality character , “Q”, is one of the following charact ers: The four time quality thresholds are set by F5 – T ime-Quality Setup . See “ F13 – T ime Error” on p age 48 for more information. Command Line For example, to i[...]

  • Page 55

    997-01530-01, Rev. C-25, Jan 2 008 45 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS The default output string is as follows: <SOH>DDD:HH:MM:SS.mm mQ<CR><LF> where: The time quality character , “Q”, is one of the following characters: For example, to prep are T ime on Request, enter: F9<CR> Then[...]

  • Page 56

    46 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 F1 1 – Time Output Format Use function F1 1 to review or change the format of the time output string used in F8 and F9. The as- shipped factory setting for F1 1 format is null, which enables F8’s and F9’ s default time output format s. T[...]

  • Page 57

    997-01530-01, Rev. C-25, Jan 2 008 47 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS T o see the T ime Output Format, enter: F11<CR> XL-GPS responds: F11 DDD:HH:MM:SS.mmm Q<CR><LF> T o remove the day , hour , minute, second, microsecond, or a chara cter from the time output format (other than the ASCII &l[...]

  • Page 58

    48 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 XL-GPS responds: OK<CR> With the above settings, F8 displays: <SOH>|10:45:01*<CR>< LF> With the above settings, F9 displays: <SOH>|10:45:01.234*< CR><LF> The new time format above sup presses days, and[...]

  • Page 59

    997-01530-01, Rev. C-25, Jan 2 008 49 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS XL-GPS responds (example): F13 TIME ERROR -0.00 2932863<CR><LF > F18 – Softwar e V ersion Request Use function F18 to display the current firmwa re version numbers of the firmware in the XL-GPS: • Bootloader • Software (f[...]

  • Page 60

    50 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 Keypad When Position Mode is “LL A”, the position of the antenna is displayed in degrees, minutes, and seconds using the following format: <SIGN><DEG><°><MIN>' <SEC>" where: For example: LATITUDE N3[...]

  • Page 61

    997-01530-01, Rev. C-25, Jan 2 008 51 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS where: For example, to display the LLA coordinates of the ante nna, enter: F50 LLA<CR> XL-GPS responds (example): F50 N 38d23'51.3" W 122d42'53.2" 5 8m<CR><LF> T o display the present antenna position [...]

  • Page 62

    52 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 where: For example: F50 XYZ<CR> XL-GPS responds (example): F50 X –4474331m Y 2668899m Z –36 68099m<CR><LF> F51 – GPS Antenna Cable Delay Use function F51 to display or configure the GPS ant enna cable delay . Setting a [...]

  • Page 63

    997-01530-01, Rev. C-25, Jan 2 008 53 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS The XL-GPS responds using the following format: F51<S><+><DELAY>ns<C R><LF> where: For example, to see the antenna ca ble delay , enter: F51<CR> XL-GPS responds: F51 +000060ns<CR><LF > T o se[...]

  • Page 64

    54 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 T o calculate what the setting should be, multiply the delay/foot by the leng th of the cable in feet. The typical delays for the following cable t ypes are: • RG-58 – approximately 1.4 ns/foot • RG-59 – approximately 1.24 ns/foot Comm[...]

  • Page 65

    997-01530-01, Rev. C-25, Jan 2 008 55 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS F53 – GPS Operation Mode Use function F53 to set the GPS M12 Receiver in Time Mode or Dynamic Mode . Select “Dynamic Mode” if the position of the rece iv er is subject to frequent change, or if it is in continuous motion. For example[...]

  • Page 66

    56 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 where: For example, enter: F53<CR> Example response: F53 TIME MODE (or DYNAMIC MODE)<CR> <LF> T o set the GPS Operation Mode, enter a command using the fo llowing format: F53<SP><MODE><CR> where <MODE>[...]

  • Page 67

    997-01530-01, Rev. C-25, Jan 2 008 57 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS • Current: the XL-GPS is using the satellite’ s GPS signal to calculate time and position. • Bad: the GPS satellite is transmitting in fo rmation that it has been removed from service. • Rejected: the XL-GPS M12 receiver ’s TRAIM[...]

  • Page 68

    58 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 F60 prn1 good curren t -159dBW F60 prn2 good curren t -162dBW F60 prn3 good curren t -163dBW F60 prn4 unknown F60 prn5 unknown F60 prn6 unknown F60 prn7 unknown F60 prn8 good curren t -161dBW F60 prn9 unknown F60 prn10 unknown F60 prn11 unknow[...]

  • Page 69

    997-01530-01, Rev. C-25, Jan 2 008 59 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS Command Line T o display the current status of F 66, enter a command using the following format: F66<CR> F66 responds using the following forma t: F66<S><STATE><ENTER/ EXIT><CR> where: For example, to disable [...]

  • Page 70

    60 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 where: For example, enter: F66 MANUAL 02 1 1 04 02 0 1 10 Meaning: • Manual settings are in ef fect. • 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), [...]

  • Page 71

    997-01530-01, Rev. C-25, Jan 2 008 61 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS F69 – T ime Mode Use function F69 to select the time type displayed by: • The XL-GPS’ s front panel display • “ F8 – Continuous T ime Once-per-Second ” on p age 42 • “ F9 – T ime On Request” on p age 44 • “ F90 ?[...]

  • Page 72

    62 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 For example, enter: F69<CR> XL-GPS gives one of the following response s: F69 GPS <CR><LF> F69 UTC <CR><LF> F69 LOCAL <CR><LF> F69 STANDARD <CR><LF > T o set the time mode, enter a command [...]

  • Page 73

    997-01530-01, Rev. C-25, Jan 2 008 63 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS The phase is the instan taneous error in seconds betwe en the oscillator and the control loop zero servo point. The frequency offset is compu ted using an averaging time that is equal to the ef fective averaging time of the oscillator cont[...]

  • Page 74

    64 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 F72 – Fault S tatus Use function F72 to display the fault st atus of the clock. • Clock PLL – Lo cked or unlocked • Clock S tatus – Locked or unlocked Command Line T o display the status of the fault detectors, enter: F72<CR> F[...]

  • Page 75

    997-01530-01, Rev. C-25, Jan 2 008 65 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS Upate the ala rm settings when adding or remo ving the exp ansion module from the XL-GPS. Alarms - General Information With Alarm Disabled, an F73 indicator do es not trigger and alarm when it enters an Unlocked or Fault state. With Alarm [...]

  • Page 76

    66 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 Alarm Definitions Clock S tatus Locked: The XL-GPS clock is locked to the GPS reference source and is operating within the F73 T ime Error Threshold. Unlocked: Check the other alarm indicators to dete rmine the cause of the problem. PLL Locked[...]

  • Page 77

    997-01530-01, Rev. C-25, Jan 2 008 67 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS LED Blink When LED Blink is enabled, the Alarm S tatus LED on th e front p anel blinks when it is green or amber . The LED does not blink when it is red, even if LED Blink is enable d. Some users disable LED Blink to ensure that the LED’[...]

  • Page 78

    68 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 Save Changes Y es: Applies all user-entered changes to the F7 3 configuration. No: Clears all user-entered changes a nd exits the function. Keypad Note: The Alarm Latch asterisk is not the same as the “refere nce source unavailable” asteri[...]

  • Page 79

    997-01530-01, Rev. C-25, Jan 2 008 69 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS T o display the latched faults, enter: F73 LATCH The XL-GPS responds in the following format: F73<SP>LATCH<SEP><12 3456789ABCDEFGHIJ><CR><LF> The values in <123456789ABCDEFGHIJ> field indicate the latche[...]

  • Page 80

    70 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 Where the value of each chara cter in <123456789ABCDEFG HIJ> field is either 'E' or 'D'. 'E' means the corresponding indicator is enabled, and can trigger an al arm if it enters a fault state. 'D' [...]

  • Page 81

    997-01530-01, Rev. C-25, Jan 2 008 71 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS The XL-GPS responds: F73<SP>THRESHOLD<SP> <nanoseconds><SP>ns<CR><LF> where <nanoseconds>is the time error threshold in n anoseconds, between 0 and 9999. T o set T ime Error Threshold, enter a stri[...]

  • Page 82

    72 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 Use the SUPPRESS command to suppress all F73 faults fro m triggering alarms for a specified duration after the XL-GPS p ower is turned on. T o check the SUPPRESS status, enter: F73<SP>SUPPRESS<CR> The XL-GPS responds in the followi[...]

  • Page 83

    997-01530-01, Rev. C-25, Jan 2 008 73 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS Although the factory configuration o utputs UTC time in 24-hour fo rmat, the following can be used to modify the code output of F90 for non-standard applications: • “ F2 – 12/24 Hour Format ” on p age 35 selects between a 12 or 24-[...]

  • Page 84

    74 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 F100 – Network Port Configuration & XL-GPS Firmwar e F100 provides two group s of commands: • Group 1, available th rough the keypad and the command line, provide s access to network port settings and hardware/Firmware st atus informat[...]

  • Page 85

    997-01530-01, Rev. C-25, Jan 2 008 75 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS The following tab le gives the command line equiv alents f or each of the preceding parameters: Group 2 The following exp anded command set is available through the command line interf ace: Y ou can reconfigure two or more network p aramet[...]

  • Page 86

    76 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 F100 EA – Ethernet Address Use function F100 EA to display the Ethernet Add ress (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 standa[...]

  • Page 87

    997-01530-01, Rev. C-25, Jan 2 008 77 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS For example, enter: F100 IP 206.54.0.21< CR> XL-GPS responds: OK<CR><LF> RESETING THE UNIT<CR ><LF> PLEASE WAIT…<CR><LF> T o obtain the IP address of the unit S tandard network port, en ter: F100[...]

  • Page 88

    78 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 where: For example, enter: F100 SM 255.255.255. 240<CR> XL-GPS responds: OK<CR><LF> RESETING THE UNIT<CR ><LF> PLEASE WAIT…<CR><LF> T o obtain the Subnet Mask of the unit S tandard network port , ent[...]

  • Page 89

    997-01530-01, Rev. C-25, Jan 2 008 79 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS where: For example, enter: F100 G 206.54.0.17<C R> XL-GPS responds: OK<CR><LF> RESETING THE UNIT<CR ><LF> PLEASE WAIT…<CR><LF> T o obtain the Default Gateway of the unit S tandard network port, e[...]

  • Page 90

    80 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 selecting between 10 Base-T and Auto. If you h ave questions about your unit, contact H: Sales an d Customer Assist ance (page 143) . T o display the current Base-T setting, enter: F100<S>BASET<CR> where XL-GPS responds: F100 BASET[...]

  • Page 91

    997-01530-01, Rev. C-25, Jan 2 008 81 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS where: For example, enter: F100 LOCK<CR> T o users on the serial port, XL-GPS responds: OK<CR><LF> Or , to users on the network port, XL-GPS gives t he following response and then closes the port: GOODBYE.<CR><LF[...]

  • Page 92

    82 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 XL-GPS responds: F100 L LOCKED<CR><LF > or F100 L UNLOCKED<CR>< LF> F100 ST – Self T est S tatus Use function F100 ST to display wheth er the Self T est S t atus parameters p assed or failed. The parameters include : [...]

  • Page 93

    997-01530-01, Rev. C-25, Jan 2 008 83 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS where: An example of the response is: F100 ST FLASH/CRC : PASS, RAM : PA SS, SERIAL : PASS, NVRAM VER : PASS<C R><LF> F100 BH – Burn Host Use function F100 BH, when upgrading f irmware, to select the FTP host and the file to [...]

  • Page 94

    84 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 T o write the BootLoader to the flash, send the F100 BH command with the FTP host, file p ath and name, and then enter: F100 BUB<CR> XL-GPS responds: OK<CR><LF> For example: >f100 bub OK BURNING FILE 192-800 0.bt WITH SIZE[...]

  • Page 95

    997-01530-01, Rev. C-25, Jan 2 008 85 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 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 P ROGRAMMED CRC3 2 = 0x2D9A260A F100 BF – Burn File System Note: See “ B: Upgrading System[...]

  • Page 96

    86 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 The existence of the FPGA p rogram file on the FTP server and an Ethernet connection is checked when the command is issued. T o write the FPGA program to the flash, send t he F100 BH command with th e FTP host, file path and name, and then sen[...]

  • Page 97

    997-01530-01, Rev. C-25, Jan 2 008 87 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS F100 CONFIG – Configur e NTP & SNMP Notes: • See “ A: Using F100 Configuration ” on p age 1 14. • NTP is an optional feature. If purchased at the same time as the XL-GPS, it comes enabled on the system. T o purchase this opti[...]

  • Page 98

    88 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 T o move the SNMP config file back onto the XL-GPS, type: >f100 config snmp se t host:<IP Add ress> dir:<subdir>< CR> T o move the NTP and SNMP config files back onto the XL-GPS, type: >f100 config ntp snm p set host:&l[...]

  • Page 99

    997-01530-01, Rev. C-25, Jan 2 008 89 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS XL-GPS responds: F100 J FACTORY MODE = 1<CR><LF> or F100 J FACTORY MODE = 0<CR><LF> F100 K I L L – Reboot Use function F100 K I L L to reboot t he unit. Use F100 K I L L after upgrading the system firmware. K I L [...]

  • Page 100

    90 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 SYMMETRICOM GPS DEVI CE. XL-GPS INITIALIZATION SUCCE SSFULLY COMPLE TED. > F100 P – Change User Password Use function F100 P to change a u ser password. In a network port session, F1 00 P changes the password of the user you lo gged in as[...]

  • Page 101

    997-01530-01, Rev. C-25, Jan 2 008 91 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS F100 PI – PING Use function F100 PI to ping a remote host to see if it is re achable. If no IP Address is provided, F100 PI uses the XL-GPS’ s own IP Address, and tests w hether the XL-GPS’ s network port has a good network connectio[...]

  • Page 102

    92 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 where: XL-GPS responds: ENTER NEW USER NAME: When you enter a new user name, XL- GPS responds: CONFIRM NEW USER NAM E: Enter the same new user name again, to conf irm t he spelling. If the same new user name has been entered twice, XL-GPS resp[...]

  • Page 103

    997-01530-01, Rev. C-25, Jan 2 008 93 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS F108 – Oscillator Configuration Use function F108 to display the type of oscillator being used: •T C X O •O C X O For oscillator s pecifications, see “ Oscillators ” on p age 1 1 . Command Line The oscillator type is defined by t[...]

  • Page 104

    94 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 F1 10 performs two sep arate functions: • Configure the J1 input port for a TIET signal • Display TIET information. Keypad • J1 Input Config : Displays “DISABLE” if the function has not been purchas ed and installed. Displays “TIET[...]

  • Page 105

    997-01530-01, Rev. C-25, Jan 2 008 95 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS Sample request: F110<CR> XL-GPS responds (example): F110 TIET 50 POSITIV E<CR><LF> T o the configure TIET input with a dif ferent impedance value, enter (example): F110 TIET 100K POSIT IVE<CR> XL-GPS responds: OK<[...]

  • Page 106

    96 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 F1 1 1 – J2 Output (Rate, PPO) Use function F1 1 1 to configure the J2 Output to generate one of several rate s or , optionally , a Programmable Pulse Output (PPO). F1 1 1 selects from one of the following rates: 1 PPS, 10 PPS, 100 PPS, 1 kP[...]

  • Page 107

    997-01530-01, Rev. C-25, Jan 2 008 97 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS F111<S><RATE><CR><LF > Or F111<S>PPO<S><START> <S><STOP><CR><LF> Where: Sample request: F111<CR> The XL-GPS displays a fixed 10 PPS rate output (example): F111 RATE 10[...]

  • Page 108

    98 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 OK<CR><LF> Single PPO pulse output For example, to produce a a single pulse with duration of 1 second on January 1, enter: F111 PPO 001:00:00:0 0.000000 001:0 0:00:01.000000 <CR> XL-GPS responds: OK<CR><LF> Or , f[...]

  • Page 109

    997-01530-01, Rev. C-25, Jan 2 008 99 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS For example, to produce a repe titive 5 micros econd pulse occurring every 10 microseconds (i.e., repetitive pulses with 100 kPPS frequency with the star t time or rising-edge on-t ime and the stop time or falling-edge at 5 μ S - or 10 μ[...]

  • Page 110

    100 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 Or , for example, to produce a repetitive one-microsecond pulse occu rring on every hour , enter: F111 PPO XXX:XX:10:0 0.000000<CR> XL-GPS responds: OK<CR><LF> F1 13 – J3 Input (Fr eq Meas) Note: Frequency Measurement is a[...]

  • Page 111

    997-01530-01, Rev. C-25, Jan 2 008 101 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS Theory of Operatio n: Freq Meas uses a heterodyne phase error mu ltiplier to achieve high resolution at short sample periods. Using it s internal disciplined frequency , the XL-GPS records or timestamps the zero crossing of the J3 input f[...]

  • Page 112

    102 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 For example, enter: F113<CR> The XL-GPS displays the current configura tion (example): F113 DISABLE<CR><LF> Or F113 FREQ MEAS 1MHZ 50 000001<CR>< LF> T o set the J3 Input Configuration, enter a character string u[...]

  • Page 113

    997-01530-01, Rev. C-25, Jan 2 008 103 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS Where For example, enter: F113 SHOW<CR> XL-GPS responds (example): Interval is 1 second s<CR><LF> +9.600000e-10<CR><LF > +1.080000e-09<CR><LF > +1.560000e-09<CR><LF > T o stop Freq Mea[...]

  • Page 114

    104 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 where: For example, enter: F117<CR> XL-GPS responds: F117 SN 31234<CR><LF > NTP ENABLE<CR>< LF> FREQ MEAS ENABL E<CR><LF> TIET ENABLE<CR> <LF> PPO ENABLE<CR>< LF> F1 19 – GPS[...]

  • Page 115

    997-01530-01, Rev. C-25, Jan 2 008 105 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS • GPS Acquisition S tate - (Dynamic Mode, S top Site Survey , S top TRAIM, S tart Site Survey , S tart TRAIM, Survey Position, Po sition Hold, TRAIM Active) Operation Each of F1 19’ s information, status, and configurat ion ite ms are[...]

  • Page 116

    106 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 Following initialization, the f ront panel display of an XL-GPS with only one G PS receiver (GPS S tatus: Unlocked) would show the following: UNLOCKED * GPS PRI LOCAL 365:16:01:05 1969 With the GPS receiver as a valid time refere n ce, the fo[...]

  • Page 117

    997-01530-01, Rev. C-25, Jan 2 008 107 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS reestablish it s current most accurate position. • Position Hold: The receiver has determined its most accurate position, and is using this static position to calculate its most accurat e time solution. • S tart TRAIM: (for T ime Rece[...]

  • Page 118

    108 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 where: XL-GPS responds: OK<CR><LF> F126 – Options Key Entry Use function F126 to enter the Option s Key , which enables certain functions (e.g., PPO, TIET , NTP , FREQ MEAS) if the correct key is entere d. T o check the status o[...]

  • Page 119

    997-01530-01, Rev. C-25, Jan 2 008 109 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 6: GPS M12 Receiver (87-8028-2) Intr oduction The optional GPS M12 Receiver act s as a S tratum 0 timing reference source to the XL-GPS T ime and Frequency System. It tracks up to 12 L1 GPS satellites, de codes their signals for time and [...]

  • Page 120

    110 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 • “ F51 – GPS Antenna Cable Delay ” on page 52 • “ F60 – GPS Receiver Satellite List ” on page 56 • “ F69 – T ime Mode ” on page 61 • “ F73 – Alarm Control / S tatus ” on p age 64 • “ F90 – Code Output Co[...]

  • Page 121

    997-01530-01, Rev. C-25, Jan 2 008 111 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 7: XL-GPS-Generated Messages Err or Messages ERROR 01 VALUE OUT OF RANGE Y ou entered a command using the correct forma t that contained a value, probably numeric, that was outside the range of acceptable valu es. Recovery Action: Re-ente[...]

  • Page 122

    112 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 Recovery Action: V erify correct parameter values. If correct, restart the XL-GPS. If this error me ssage persists, cont act Symmetricom T echnical Customer Service. ERROR: Action (get or set) is not specified Y ou have omitted the “get” [...]

  • Page 123

    997-01530-01, Rev. C-25, Jan 2 008 113 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS Informational Messages Messages in this section inform you of an ev ent and do not require any action on your part. Deleted previously set IP host address Y our last action deleted the previously set IP host address. NOTICE: Cannot respon[...]

  • Page 124

    114 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 A: Using F100 Configuration Configuring NTP & SNMP Parameters F100 CONFIG instructs the XL -GPS unit to transfer its NTP and SNMP configura tion files to an FTP server so the user can edit them. When finished editi ng, the user transfers [...]

  • Page 125

    997-01530-01, Rev. C-25, Jan 2 008 115 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS For other operating systems and configurat ions, cons ult the appropriate document ation for obtaining the FTP server ’s IP address. Copy the Configuration Files to the FTP Server T elnet to the XL-GPS or open a terminal session to it o[...]

  • Page 126

    116 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 Edit the Configuration Files In Windows, edit the configuration files using a text editor such as Notepad or W ordp ad. For more informati on, see “ D: Network T ime Protocol (NTP) ” on page 135 . If using the preconfigu red FTP server (d[...]

  • Page 127

    997-01530-01, Rev. C-25, Jan 2 008 117 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS Resetting... If you get “ Error: Can’t open so urce file ”, verify that the FTP server ’s <<Local Server>> is running. After XL-GPS receives the configuration files, it reboots, and goes th rough the normal startup pro[...]

  • Page 128

    118 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 B: Upgrading System Firmwar e Caution: Consideration must be given to the firmware and the har dwar e version numbers of the XL-GPS and it’ s optional components. Consult with Symmetric om’ s Customer Service department before performing [...]

  • Page 129

    997-01530-01, Rev. C-25, Jan 2 008 119 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS network traf fic raises the possibili ty that the system sof tware files could be corrupted, yielding the XL-GPS inoperable. T elnet to the XL-GPS over the network. For example, at your workstat ions command line, type “telnet 192.168.4[...]

  • Page 130

    120 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 Then ‘burn’ the bootload er to the XL-GPS’s flash memory by entering: F100 bub XL-GPS responds: OK BURNING FILE 192-800 0.bt WITH SIZE 452164 TO PARTITIO N:0 SECTOR:0 SEC: 0 RE: 0 SEC: 1 RE: 0 SEC: 2 RE: 0 SEC: 3 RE: 0 SEC: 4 RE: 0 SEC:[...]

  • Page 131

    997-01530-01, Rev. C-25, Jan 2 008 121 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS Then do the same for the ‘file system’ (.f s) file: F100 bh <IP_address> <relative_pat h>/<file.fs> For example: F100 bh 192.168.49.1 20 /192-8002.f s XL-GPS responds: BURN HOST IS READY<C R><LF> Then ent[...]

  • Page 132

    122 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 Message: >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-en ter if necessary . Message:[...]

  • Page 133

    997-01530-01, Rev. C-25, Jan 2 008 123 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS An example XL-GPS response is: F100 VER BOOTLOADER 192-8000 SOFTWARE 192-8001 FILE SYSTEM 192-8002v1.80 NVRAM VER 5 PROJ REV #1.80 The “ PROJ REV ” number is the firmware version number . The “ v ” number in “ FILE SYSTEM ” is[...]

  • Page 134

    124 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 C: SNMP The mibs for this product are ava ilable on the product CD. Key: SNMP Private Enterprise MIB S tructure This section describes the top le vel structure & de sign of the XL-GPS SNMP Private Enterprise MIB. SNMP Addressing SNMP addr[...]

  • Page 135

    997-01530-01, Rev. C-25, Jan 2 008 125 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS For the XL-GPS, groups 1, 2, 3 , 4 and 5 have been deprecated and a new group 6, product s, has been added. For the XL-GPS and future Symmetricom produc ts, groups 1 thro ugh 5 will be absent from the XL-GPS Enterprise MIB definition supp[...]

  • Page 136

    126 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 ID is defined as Symmetricom.product s.xlGps for the XL-GPS product and Symmetricom.prod ucts.xxx for all subsequent product s. XL-GPS System Group The xlGp sSystem system group cont ains the systemFault and the systemS tatu s groups. These g[...]

  • Page 137

    997-01530-01, Rev. C-25, Jan 2 008 127 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS The XL-GPS Fault Group Note : For the figures in this ch apter , 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 oc[...]

  • Page 138

    128 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 The systemFaultConfig sub-group cont ains parameters to contro l the generation of system ala rms. The timeout, threshold and power on suppress values are cont ained in the systemFaultConfigData group . Also in this group is a method object c[...]

  • Page 139

    997-01530-01, Rev. C-25, Jan 2 008 129 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS XL-GPS MainCard Group Note : For the figures in this ch apter , substitute “xlgps” for “xli”. At present the xlGpsMainCard group cont ains only the NTP subg roup as shown above. Refe r to the xlGpsMainCard-SMIv2.mib MIB definition[...]

  • Page 140

    130 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 This model makes adding additional p roducts and mainta inin g compatibility a straight forward process. Each additional product will be g iven a branch in the tree under enterprises.SymmetricomTt m.products. For now , we have only enterprise[...]

  • Page 141

    997-01530-01, Rev. C-25, Jan 2 008 131 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 12,000 private addresses and Symmetricom is by comp arison one of the earlier adopter s of SNMP with an Enterprise MIB! RFC – Request for Comment s : A document reviewed and r eleased by the IANA that defines the formal definitions of v[...]

  • Page 142

    132 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 system. Click the <OK> button again to con firm the action. 4. Click the <Close> button to exit the “Load/Unload MIBs:SNMP” dialogue box. Configure T raps 1. Select the menu item “OptionsEvent Configuration” . A p op windo[...]

  • Page 143

    997-01530-01, Rev. C-25, Jan 2 008 133 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS Additional OpenView con figuration 1. Select the menu item “Options->SNMP Configuration”. A popup titled “SNMP Configuratio n” will ap- pear . 2. In the “SNMP Configuration” popup: set the “Comm unity” field to “publi[...]

  • Page 144

    134 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 9. Select the menu item “xlGp s->Configuration”. In the popup “xlGpsconfig” verify that the “maskPll- Synthesizer” entry is set to “enabled”. 10. Repeat step s 4-9 in turn for each additional entry under systemFaultConfigMa[...]

  • Page 145

    997-01530-01, Rev. C-25, Jan 2 008 135 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS D: Network T ime Pr otocol (NTP) As an option, Symmetricom can factory config ure t he XL-GPS to function as a S tratum 1 network time server . Network time servers use Network T ime Protoc ol (NTP) to synchronize computer clocks across a[...]

  • Page 146

    136 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 Editing MD5 keys on the XL-GPS NTP keys are needed if you are using NTP in b roadcast mode with MD5 authentication. This (and the following) section provide configura tion guidelines. Fo r additional information, consult Dr . Mills NTP site a[...]

  • Page 147

    997-01530-01, Rev. C-25, Jan 2 008 137 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 2 M TTXL-GPS When you invoke the NTP client at the co mmand 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 [...]

  • Page 148

    138 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 E: T ime Code Formats The following section provides a summa ry description of the three time code types used by the XL-GPS. The definitive IRIG time code specification, the Ra nge Commanders Council’s IRIG Serial T ime Code Formats , I RIG[...]

  • Page 149

    997-01530-01, Rev. C-25, Jan 2 008 139 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS beginning of each frame and a positio n identifier mark s the end of every ten elements. IRIG-B has ten position identifiers per frame. The element s prior to position identifier P5 compri se the time of yea r segment. The first ten eleme[...]

  • Page 150

    140 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 Figure 4: IRIG S tandard Format A[...]

  • Page 151

    997-01530-01, Rev. C-25, Jan 2 008 141 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS F: W orld Map of T ime Zones:[...]

  • Page 152

    142 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 G: Part Names S tandard Chassis • Model XL-GPS 1UChassis w . Main CPU Card Software-Key Enabled Options • Network T ime Protocol on S tand ard Network Port • T ime Interval - Event T ime (TIET) on Main CPU Card’ s J1 connector • Pro[...]

  • Page 153

    997-01530-01, Rev. C-25, Jan 2 008 143 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS H: Sales and Customer Assistance Symmetricom's Sales and Customer Assist ance Center s are a centralized resource to handle a ll your customer needs. Our Centers are staffe d with logi stics personnel to handle product quotes, order [...]

  • Page 154

    144 997-01530-01, Rev. C-25, Jan 20 08 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1[...]

  • Page 155

    997-01530-01, Rev. C-25, Jan 2 008 145 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 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 BootLoa[...]

  • Page 156

    146 997-01530-01, Rev. C-25, May 2008 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 CONFIG Parameters 87 Configuration Factory 103 GPS Receiver 104 Oscillator 93 Configure NTP & SNMP Parameters 87, 114 Continuous Time Once-per-Second 42 Customer Service 143 D Daylight Saving Time (DST) Mode 58 Deleted previously set IP ho[...]

  • Page 157

    997-01530-01, Rev. C-25, Jan 2 008 147 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 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 & SNMP 87 F100 CONFIG – Configure NTP & SNMP Paramete[...]

  • Page 158

    148 997-01530-01, Rev. C-25, May 2008 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 Factory Mode Jumper 88 Fault Status 64 Firmware 74 Firmware Upgrade 118 Format Time Output 46 Freq Me as 6, 100 Frequency Measurement 6, 100 Function Reference 32 Function Summary 32 Future Expansion 129 G G 78 Gateway 78 Goodbye. 113 GPS Ante[...]

  • Page 159

    997-01530-01, Rev. C-25, Jan 2 008 149 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS K K I L L 89 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 MD[...]

  • Page 160

    150 997-01530-01, Rev. C-25, May 2008 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 NTP 9 Options Key Entry 108 order stat us 143 order status and schedulin g 143 Oscillator Statistics 62 Oscillator Configuration 93 P P 90 Part Names 142 Password 29 Change 90 Changing 30 PI 91 PING 91 Position 49 Power Supply 16 PPO 96 Privat[...]

  • Page 161

    997-01530-01, Rev. C-25, Jan 2 008 151 2 5 1 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 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 Supp[...]

  • Page 162

    152 997-01530-01, Rev. C-25, May 2008 SS S SSS S SSS S S SS S S SS S S SS S S SSS S S S S S S SS S SS SS 1 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 Mai[...]