Symmetricom Xl Gps Users Manual
XL-GPS to the manual 9da767a4-5ba9-4913-b37a-d75afbaedc0f
2015-02-02
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XL-GPS Time & Frequency System User Guide 997-01530-01, Rev. C, January 2008 Notices Symmetricom, Inc. Timing Test & Measurement 3750 Westwind Blvd. Santa Rosa, CA 95403-1053 http://www.symmetricom.com Copyright © 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. S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S Table of Contents Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii Limitation of Liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii Proprietary Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii Abut this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii Finding Answers to Product Questions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii 1: Overview of the XL-GPS Time and Frequency Receiver . . . . . . . . . . . . . . 1 Product Description and Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2: System Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Time and Frequency Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 GPS Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 AC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Standard I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 RS-232/RS-422 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Network Port 10/100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 J1 - Optional TI/ET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 J2 - Rate Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 J2 - Optional Programmable Pulse Out (PPO) . . . . . . . . . . . . . . . . . . . . . . . 6 J3 – Optional Frequency Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1 PPS Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Code Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 GPS Time and Frequency Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Expansion Module (87-8034) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 IRIG Code Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Optional Programmable Pulse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Optional Alarm Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 NTP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Oscillators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Standard TCVCXO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Optional OCXO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Calibration Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Volatility Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2 1 5 997-01530-01, Rev. C-25, Jan 2008 i S S 1 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S 3: Installation/Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 Installing the GPS Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 Selecting a GPS Antenna Site Outdoors . . . . . . . . . . . . . . . . . . . . . . . . . . .13 Mounting the GPS Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 GPS Signal Strength Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 Making Additional Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 Connecting the Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Configuring the Network Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Configuring the Time Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Using the Command Line Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 Connecting to the Serial Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 Connecting to the Network Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 Installing the Expansion Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 Configuring the Expansion Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 Verifying Antenna Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 Rack Mounting the XL-GPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 4: User Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 Alarm Status LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 keypad Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 Time Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 Status Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 Menu Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 Keypad Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 Keypad Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 Command Line Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 Logging In . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 Operator Login . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 Guest Login . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 Logging Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 Changing Username and Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 Session Timeout and Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 5: Function Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32 Function Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32 F1 – Time Zone Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 F2 – 12/24 Hour Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35 F3 – Time & Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37 F4 – Serial Port Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38 F5 – Time-Quality Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39 F6 – Keypad Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41 F8 – Continuous Time Once-per-Second . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42 F9 – Time On Request . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44 F11 – Time Output Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46 F13 – Time Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48 F18 – Software Version Request . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49 F50 – GPS Receiver LLA/XYZ Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49 ii 997-01530-01, Rev. C-25, Jan 2008 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S F51 – GPS Antenna Cable Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 F52 – Distribution Cable Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 F53 – GPS Operation Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 F60 – GPS Receiver Satellite List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 F66 – Daylight Saving Time (DST) Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 F69 – Time Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 F71 – Oscillator Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 F72 – Fault Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 F73 – Alarm Control / Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 F90 – Code Output Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 F100 – Network Port Configuration & XL-GPS Firmware . . . . . . . . . . . . . . . . . 74 F100 EA – Ethernet Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 F100 IP – IP Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 F100 SM – Subnet Mask . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 F100 G – Gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 F100 IC – Network Port Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 F100 BASET – 10/100 BASE- T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 F100 L/LOCK/UNLOCK – Remote Lockout . . . . . . . . . . . . . . . . . . . . . . . . . 80 F100 L – Remote Lockout Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 F100 ST – Self Test Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 F100 BH – Burn Host . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 F100 BUB – Burn BootLoader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 F100 BU – Burn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 F100 BF – Burn File System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 F100 BUFP – Burn FPGA Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 F100 CONFIG – Configure NTP & SNMP . . . . . . . . . . . . . . . . . . . . . . . . . . 87 F100 J – Factory Mode Jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 F100 K I L L – Reboot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 F100 P – Change User Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 F100 PI – PING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 F100 PN – Change User Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 F108 – Oscillator Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 F110 – J1 Input (TIET) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 F111 – J2 Output (Rate, PPO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 F113 – J3 Input (Freq Meas) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 F117 – Factory Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 F119 – GPS Receiver Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104 F126 – Options Key Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108 S S S S S S 2 1 5 6: GPS M12 Receiver (87-8028-2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109 7: XL-GPS-Generated Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 Informational Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113 997-01530-01, Rev. C-25, Jan 2008 iii S S 1 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S A: Using F100 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114 Configuring NTP & SNMP Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114 Overview of Steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114 Set up the FTP Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114 Get the IP Address of the FTP Server/Workstation . . . . . . . . . . . . . . . . . .114 Copy the Configuration Files to the FTP Server . . . . . . . . . . . . . . . . . . . . .115 Edit the Configuration Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116 Move the Configuration Files Back to the XL-GPS . . . . . . . . . . . . . . . . . . .116 B: Upgrading System Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118 Overview of Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118 Set up the FTP Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118 Open a Command Line Session on the XL-GPS . . . . . . . . . . . . . . . . . . . .118 Upgrade the Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121 FAQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122 C: SNMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124 SNMP Private Enterprise MIB Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124 SNMP Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124 New Top Level Structure of Enterprise MIB for XL-GPS . . . . . . . . . . . . . .124 XL-GPS System Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .126 The XL-GPS Fault Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .127 The XL-GPS System Status Group . . . . . . . . . . . . . . . . . . . . . . . . . . .128 XL-GPS MainCard Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129 XL-GPS Traps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129 Future Expansion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129 Glossary of SNMP-Related Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130 Configuring and Testing SNMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .131 HP OpenView Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .131 XL-GPS Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .133 Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .133 D: Network Time Protocol (NTP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .135 Editing ntp.conf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .135 Editing MD5 keys on the XL-GPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .136 Editing MD5 keys on the NTP Client . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .136 E: Time Code Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138 IRIG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138 IRIG Code Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138 IRIG-B Time Quality Flags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .139 Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .139 iv 997-01530-01, Rev. C-25, Jan 2008 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S F: World Map of Time Zones: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141 G: Part Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142 H: Sales and Customer Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143 US Assistance Center . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143 Customer Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143 Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143 EMEA Assistance Center . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143 Customer Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143 Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143 2 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145 1 5 997-01530-01, Rev. C-25, Jan 2008 v S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S 1 vi 997-01530-01, Rev. C-25, Jan 2008 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S 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. 2 If on-site warranty repair or replacement is required, the customer will be 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. 1 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 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. 5 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 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S Proprietary Notice 1 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 manual. 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 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S 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 1x10-12 frequency output accuracy, and better than 30 nS RMS accuracy to UTC. 2 Two user interfaces are available for managing the XL-GPS: • command line interface, available from the serial and network ports (using TELNET) • keypad interface, available on the front panel of the XL-GPS 1 The standard configuration includes: • 1U chassis • GPS receiver • Vacuum fluorescent display and a 19-button keypad • 1 pulse/sec out (via rear panel BNC) • 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 5 An optional Expansion Module provides four female BNC connectors that are factory-configurable per the sales order. The output configurations include: • IRIG B AM • IRIG B DC • Alarm • 1 PPS • 1 kPPS • 10 kPPS • 100 kPPS 997-01530-01, Rev. C-25, Jan 2008 1 S S 1 S S S S S S S S S S S S S S • 1 MPPS • 5 MPPS • 10 MPPS • Optional Programmable Pulse • Optional Alarm Relay S S S S S S S S S S S S S S S S S S S S S S S S S 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) • 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 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S 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 lbs Standard Hardware: Standard 19" EIA rack system Optional Hardware: Slide rack hardware 2 1 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 5 GPS Reference Time and frequency accuracy/stability while locked to a GPS timing reference: 1 PPS Output +/-30 nS RMS Frequency Output Accuracy: < 1 x 10-12 @1 day Frequency/Timing Allan Deviation Stability: 1 x 10-9 @ 1 sec 3 x 10-10 @ 10 sec 3 x 10-10 @ 100 sec 2 x 10-10 @ 1000 sec 1 x 10-12 @ 1 day AM Code Output Accuracy: 10 μS DC Level Shift Code Output Accuracy: 1 μS to the 1 PPS 997-01530-01, Rev. C-25, Jan 2008 3 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S AC Power Supply Input 1 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: 7 or 8 Parity: even, odd or none for Data Bits 8, even or odd for Data Bits 7 Stop Bits: 1 or 2 Connector: Male 9 pin D subminiature Pin Assignment: 1------N/C 2------Rx (RS-232) 3------Tx (RS-232) 4------N/C 5------GND 6------Rx- (RS-422) 7------Rx+ (RS-422) 8------Tx- (RS-422) 9------Tx+ (RS-422) Factory settings for RS-232 4 9600,N,8,1 997-01530-01, Rev. C-25, Jan 2008 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S Network Port 10/100 The Ethernet port interface is: Type: Standard RJ-45 8 pin connector, 10 Base-T and 100 Base-T standards. Frame format: IEEE 802.3 J1 - Optional TI/ET 2 The TI/ET configuration is via the Keypad, Serial I/O, and Network port. J1 accepts an external 1 PPS or Event input signal 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 kΩ or 50 Ω. The rising edge of the pulse is measured with 5 nS resolution relative to the system clock time. Pulse width: 100 nS, min. Active Edge: Rising High Level: Logic Hi >1.25 V < 10V Low Level: Logic Low < 1.25 V >0V Impedance: 100 kΩ or 50 Ω Resolution: 5 nS, single shot Accuracy: Refer to “Time and Frequency Accuracy” on page 3 Qty: 1 Connector: BNC female 1 J2 - Rate Out 5 The Rate output is default 10 MPPS and configuration is via the Keypad, Serial I/O, and Network port. Rate: 1 PPS, 10 PPS, 100 PPS, 1 kPPS, 10 kPPS, 100 kPPS, 1 MPPS, 5 MPPS, 10 MPPS Accuracy: Refer to “Time and Frequency Accuracy” on page 3 Duty cycle: 60/40%+/-10% Amplitude (TTL): TTL Levels into 50Ω Qty: 1 Connector: BNC female 997-01530-01, Rev. C-25, Jan 2008 5 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S J2 - Optional Programmable Pulse Out (PPO) 1 The PPO allows generation of a precisely synchronized trigger pulse at an arbitrary time and with arbitrary pulse width in integer multiples of 1 μS. The rising edge of the trigger output can be programmed to occur with 1 us resolution. Pulse width: Programmable in 1 μS steps On time edge: Rising Amplitude: TTL Levels into 50 Ω J3 – Optional Frequency Measurement The Frequency Measurement (Freq Meas) option: measures an external frequency applied to the J3 input relative to the XL-GPS’ disciplined frequency. Frequency: 1, 5, 10 MHz Resolution 120 x 10-12@ 1 Second Interval 12 x 10-12@ 10 Second Interval 1 x 10-12@ 100 Second Interval Range 1000 x10-6 Impedance: 1 kΩ, 50 Ω 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 μS +/-1 μS On time edge: Rising Accuracy: Refer to “Time and Frequency Accuracy” on page 3 Amplitude: TTL Levels into 50 Ω Qty: 1 Connector: BNC female 6 997-01530-01, Rev. C-25, Jan 2008 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S 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 Ω +/-10% Ratio (AM): 3:1 +/-10% Amplitude (DC): TTL into 50 Ω Qty: 1 Connector: BNC female Phasing: In phase with carrier ± 10 μS Accuracy: Refer to “Time and Frequency Accuracy” on page 3 2 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 threshold 2. Element P5+80ms encodes a binary 1 when the error exceeds threshold 3 and P5+90ms when the error exceeds threshold 4. 1 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 5 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 7 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S GPS Time and Frequency Reference GPS Time and Frequency reference configuration is via the Keypad, Serial I/O, and Network port. 1 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: • IRIG B AM • IRIG B DC • Alarm • 1 PPS • 1 kPPS • 10 kPPS • 100 kPPS • 1 MPPS • 5 MPPS • 10 MPPS • Optional Programmable Pulse • Optional Alarm Relay Connector Quantity and Type: Four female BNC 8 997-01530-01, Rev. C-25, Jan 2008 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S IRIG Code Out Format: IRIG B-120 1 kHz AM, or IRIG B-000 DC Amplitude (AM): 3.0 Vp-p +/-1V, into 50 Ω Ratio (AM): 3:1 +/- 10% Amplitude (DC): TTL into 50 Ω Phasing: In phase with carrier ± 10 μS 2 Alarm 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. Drive: Open Collector Max. Voltage: 25 VDC Max. Current: 50 mA 1 Rates Rate: 1 PPS, 1 kPPS, 10 kPPS, 100 kPPS, 1 MPPS, 5 MPPS, 10 MPPS Duty cycle: 60/40% +/- 10% Amplitude (TTL): TTL Levels into 50 Ω Optional Programmable Pulse On time edge: Rising Amplitude: TTL Levels into 50 Ω 5 Optional Alarm Relay Connection: Terminal strip, COM, NO, NC Max Voltage: 48 VAC/VDC Max Current: 2 A @ 24 VDC NTP 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 9 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S Support for version 3.0 of the NTP, RFC 1305 as well as the Simple Network Time Protocol (SNTP), RFC1361 is available. In addition, the NTS will respond to TIME protocol requests, RFC868. 1 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 µS) SNTP UDP Port 123 - RFC1361 TIME UDP Port 37 - RFC868 10 997-01530-01, Rev. C-25, Jan 2008 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S Oscillators Standard TCVCXO Accuracy: < 1 x 10-12 @ 1 day when locked to GPS Frequency/Timing Stability (Allan Deviation) 1 x 10-9 @ 1 sec 3 x 10-10 @ 10 sec 3 x 10-10 @ 100 sec 2 x 10-10 @ 1000 sec 1 x 10-12 @ 1 day Temp 2 5x10-7, over 0°C to 50°C when not locked to GPS Optional OCXO Accuracy: < 1 x 10-12 @ 1 day when locked to GPS Frequency/Timing Stability (Allan Deviation) 1 x 10-10 @ 1 sec 1 x 10-10 @ 1000 sec 1 x 10-12 @ 1 day Temp 1 x 10-8, over 0°C to 50°C when not locked to GPS Drift rate 5 x 10-9 / Day 1 Certification 5 UL UL 60950:2000 C-UL CAN/CSA-C22.2 No. 60950-00:2000 FCC FCC Part 15, Subpart B CE 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 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 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S Volatility Statement Statement of Volatility for the XL-GPS Model 1530-602. 1 Memory Size Memory Type Volatile/Non-Volatile User Data IC Location 16 Mb 8 Mb SRAM Non-Volatile No U25 EEROM Volatile 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. 12 997-01530-01, Rev. C-25, Jan 2008 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S 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 2 Select a site that... • Is the highest point available • Offers a full 360° view horizontally, to within 10° vertically of the horizon • Is higher than neighboring buildings/obstructions • Is protected from strong radio frequency (RF) and microwave transmissions • Is set away from RF-reflective surfaces that cause multipath interference • Is set 3 ft. (1 m) away from other GPS antennas 1 Avoid... • 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 • Patching multiple cables together to make a single cable run • Running the cable through bulkheads and along side high-energy cables • Crimping or damaging the cable 5 For test situations, 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 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S 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). 1 Notes: • The XL-GPS requires a 12 Volt-compatible antenna. Antennas not rated for 12 V will be damaged. • Use an antenna splitter to connect a single antenna to multiple receivers. Don’t use a BNC “T” connector. • The L1 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. Figure 1: L1 GPS Antenna - methods for cabling and mounting 14 997-01530-01, Rev. C-25, Jan 2008 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S 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. 2 1 Figure 2: GPS Signal Strength Requirements Making Additional Connections Make the following optional connections: • 5 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 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 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S – J2 Output (Rate, PPO)” on page 96, “F113 – J3 Input (Freq Meas)” on page 100. 1 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: • Use a 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. • 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 sequence; 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 XLGPS 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 S S S S S S S S S S S S S S S S S S S S S S S S S S S 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 S S S S S S S S S S S 2 1 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 interface, and through the serial port’s command line interface. • For additional information, consult the relevant topics covering the F100 commands in the XLGPS 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: 5 • 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): (“F66 – 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. - DST is NOT observed in Hawaii, American Samoa, Guam, Puerto Rico, the Virgin Islands, 997-01530-01, Rev. C-25, Jan 2008 17 S S S S S S - 1 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S the Eastern Time Zone portion of the State of Indiana, and most of Arizona (Navajo Indian Reservation in observes DST). Throughout 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 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 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: • 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’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 • Baud rate – 9600 • Data bits – 8 • Parity – NONE • 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 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S 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.) 2 Once connected, press the Enter key on your keyboard to get a command prompt. From the command prompt, “>”, 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. 1 Troubleshooting Tip: If the terminal emulation software has trouble displaying XL-GPS responses (looks like the unit doesn’t respond 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 & 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. - In Windows, click Start – Run, enter telnet ###.###.###.### (where the #s are the XLGPS’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. 5 From the command prompt, “>”, 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: • “Configuring the Network Port” on page 16 • “F100 – Network Port Configuration & XL-GPS Firmware” on page 74 • “F100 L/LOCK/UNLOCK – Remote Lockout” on page 80 997-01530-01, Rev. C-25, Jan 2008 19 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S Installing the Expansion Module Warning: Installing and removing the expansion module can expose dangerous voltages that can cause electric 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. 1 To install the optional Expansion Module: 1. Set the unit up on a clean, safe, stable work surface that provides good visibility and maneuverability 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 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S at the factory per the customer sales order. S4 J4 S3 J3 2 S2 J2 1 JP2 S1 J1 To change the configuration, identify the jumper at JP2 that corresponds to the output you are configuring. For example, jumper J4 AM corresponds to the J4 output. To generate IRIG-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 5 997-01530-01, Rev. C-25, Jan 2008 21 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S generate 10 MPPS and the procedure would be complete. The same method can be used to configure any of the outputs. 1 Switch Position Signal Type 0 Off 1 10 MPPS 2 5 MPPS 3 1 MPPS 4 100 kPPS 5 10 kPPS 6 1 kPPS 7 1 PPS 8 Code DC (IRIG-B DC Time Code) 9 PPO A Alarm B-F Not Used 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: • In F119 – GPS Receiver Configuration (page 104), after approximately 20 minutes of operation, check that GPS STATUS is LOCKED and 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 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S Rack Mounting the XL-GPS The XL-GPS comes with the following parts needed to mount the XL-GPS securely in any EIA 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 2 To rack mount the XL-GPS: 1 • 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, Rev. C-25, Jan 2008 5 23 S S S 1 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S 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 rackcooling fan capable of 100 cfm in heavily loaded racks. 24 997-01530-01, Rev. C-25, Jan 2008 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S 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. 2 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 1 = 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. 5 - F73’s ‘Timeout Delay’ controls 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 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S Time Display related functions: 1 • Select between the 12 or 24 hour format displayed: “F2 – 12/24 Hour Format” on page 35. • Select between Local, Standard, UTC, and GPS time: “F69 – Time Mode” on page 61. Time related functions: • “F1 – Time Zone Offset” on page 34 • “F3 – Time & Date” on page 37 • “F66 – Daylight Saving Time (DST) Mode” on page 58 Status Display 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 UTC ∗ GPS 200:21:24:09 2002 where: LOCKED = 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 visible 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.) Menu Display To use the XL-GPS functions that are available from the keypad, press the MENU button on the keypad. “Function 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: F1: TIME ZONE OFFSET 26 997-01530-01, Rev. C-25, Jan 2008 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S 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. 2 1 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 values 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. 5 Keypad Examples The following examples show how to use the keypad effectively. 997-01530-01, Rev. C-25, Jan 2008 27 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S To open a function using ENTER: 1 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 Abandons 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 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S 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…/ / ” 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 2 1 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-GPS’s functions and to perform firmware updates. As shipped, you can log in as Operator using: 5 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 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S 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”. 1 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: • “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 serial ports session concurrently, provided the other session is inactive (i.e., not actively performing a function such as F8 – Continuous Time Once-perSecond). 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: >f100 ic f100 IP:192.168.46.150 SM:255.255.255.0 G:192.168.46.1 >NOTICE: A NEW TELNET SESSION HAS BEEN STARTED ON THE INTERNET PORT! >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 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S f100 IP:192.168.46.150 SM:255.255.255.0 G:192.168.46.1 >f100 ic f100 IP:192.168.46.150 SM:255.255.255.0 G:192.168.46.1 > Network port session: WELCOME TO SYMMETRICOM NETWORK INTERFACE! USER NAME: operator PASSWORD: ***** NETWORK INTERFACE 192-8001 (c) 1998 - 2003 SYMMETRICOM ALL RIGHTS RESERVED LOGIN SUCCESSFUL! 2 >f100 ic f100 IP:192.168.46.150 SM:255.255.255.0 G:192.168.46.1 1 >NOTICE: UTILITY MONITOR SESSION HAS TAKEN PRIORITY FROM THIS TELNET SESSION! >f100 ic NOTICE: CANNOT RESPOND TO COMMAND BECAUSE UTILITY PORT SESSION HAS PRIORITY! 5 997-01530-01, Rev. C-25, Jan 2008 31 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S 5: Function Reference 1 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 & Date K, N, S Set the 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 Set the thresholds for each of the four time quality flags F6 – Keypad Lock K*, N, S Lock keypad access to the XL-GPS’s functions. (When locked, F6 is the only function available from the keypad.) F8 – Continuous Time Once-perSecond N, S Output the time once-per-second (to the command line) F9 – Time On Request N, S 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 View the Latitude/Longitude/Altitude or geocentric X/Y/Z coordinates of one or more GPS antennas. F51 – GPS Antenna Cable Delay K, N, S Compensate for the delay caused by the length of the GPS antenna cable. (Use F52 to adjust timing outputs.) F52 – Distribution Cable Delay K, N, S Compensate for the length of the distribution cable on J2. F53 – GPS Operation Mode K, N, S Operate the GPS M12 Receiver in Time Mode in static applications, or in Dynamic Mode for mobile applications. F60 – GPS Receiver Satellite List K, N, S View a list of current and tracked satellites. F66 – Daylight Saving Time (DST) Mode K, N, S Schedule when DST starts and ends (Local time only) F69 – Time Mode K, N, S Set the type of time (GPS, UTC, Standard, Local) displayed on the front panel of the XL-GPS 32 997-01530-01, Rev. C-25, Jan 2008 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S F71 – Oscillator Statistics K, N, S Display the XL-GPS oscillator’s phase, offset, drift, and DAC values F72 – Fault Status K, N, S View clock and power supply fault status F73 – Alarm Control / Status K, N, S View the status of all the alarm indicators. Enable/disable alarms for each indicator. Set alarm thresholds. Enable or disable LED blink F90 – Code Output Configuration K, N, S Configure settings for CODE – time code output F100 – Network Port Configuration & XL-GPS Firmware K, N, S Configure the standard network port settings F100 EA – Ethernet Address K, N, S Display the Ethernet (MAC) address F100 IP – IP Address K, N, S Configure the IP address F100 SM – Subnet Mask K, N, S Configure the subnet mask F100 G – Gateway K, N, S Configure the default gateway F100 IC – Network Port Settings K, N, S Display all the standard network port’s settings F100 L/LOCK/UNLOCK – Remote Lockout K, N, S Lock remote access to the XL-GPS’s standard network port F100 L – Remote Lockout Status K, N*, S Display the status of F100 LOCK *Locked through the network port, serial port, and keypad. Can be unlocked only through the keypad or serial port. F100 ST – Self Test Status K, N, S Display the XL-GPS’s self test results for Flash CRC, RAM, Serial Port, and NVRAM F100 BH – Burn Host N, S Upgrading system firmware: select the FTP host, path, and filename of the system firmware F100 BUB – Burn BootLoader N, S Upgrading system firmware: ‘burn’ the bootloader file (*.bt) selected using F100 BH to flash memory F100 BU – Burn N, S Upgrading system firmware: ‘burn’ the system firmware file (*.bin) selected using F100 BH to flash memory F100 BF – Burn File System N, S Upgrading system firmware: ‘burn’ the file system file (*.fs) selected using F100 BH to flash memory F100 BUFP – Burn FPGA Firmware N, S Upgrading system firmware: burn the FPGA program file (*.bin) selected using F100 BH to the flash memory F100 CONFIG – Configure NTP & SNMP N, S Transfer the NTP and SNMP configuration files between the XL-GPS and an FTP server for editing F100 J – Factory Mode Jumper N, S View the status of the factory mode jumper, which is used by factory technicians. Not of interest to most end users. F100 K I L L – Reboot N, S Reboot the XL-GPS F100 P – Change User Password N, S Change the XL-GPS password F100 PI – PING N, S Ping from the XL-GPS to another host on the network F100 PN – Change User Name N, S Change the User Name 997-01530-01, Rev. C-25, Jan 2008 2 1 5 33 S S S 1 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S F108 – Oscillator Configuration K, N, S View the oscillator type F110 – J1 Input (TIET) K, N, S Configure the J1 input connector F111 – J2 Output (Rate, PPO) K, N, S Configure the J2 output connector F113 – J3 Input (Freq Meas) K, N, S Configure the J3 input connector F117 – Factory Configuration K Set the brightness of the display on the XL-GPS’s front panel F117 – Factory Configuration K, N, S View some of the factory settings such as the serial number or NTP state F119 – GPS Receiver Configuration K, N, S Configure and display status for the GPS M12 Receiver card (87-8028-2) F126 – Options Key Entry K, N, S Enable an XL-GPS option by entering a software key S F1 – Time Zone Offset 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 • “F11 – Time Output Format” on page 46 Command Line To display the time zone offset, send: F1 XL-GPS responds: F1 : 34 997-01530-01, Rev. C-25, Jan 2008 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S where: F = ASCII character F 01 = function number = ASCII space character (one or more)= either no character or + for positive offsets or – for negative offsets = one – or two-digit hours offset from 00 to12 hours : = ASCII character for a colon = two-digit minutes offset = carriage return character = line feed character For example, to set the time zone offset, enter: F1 –8:00 2 1 XL-GPS responds: OK To verify the change, enter: F1 XL-GPS Responds: F1 –8:00 5 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 • “F9 – Time On Request” on page 44 • “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 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S Note: Local time is commonly displayed in both 12 and 24 formats. The specifications for Standard, 1 UTC, and GPS call for using the 24-hour format. Applying the 12-hour format to any time type leads to ambiguous 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 XL-GPS responds: F2 DI where: F = ASCII character F. 02 = Function number. = ASCII space character (one or more). D = ASCII character for Display format.= 12 or 24. I = ASCII character for IRIG format = Carriage return character. = Line feed character. For example, to display the current hour format, send: F2 XL-GPS responds: F2 D24 I24 To set the hour format, send: F2 D12 I24 XL-GPS responds: OK 36 997-01530-01, Rev. C-25, Jan 2008 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S F3 – Time & 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 which 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. 2 1 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 XL-GPS responds: 5 F3 / / : : where: F3 = ASCII string for function F3. = ASCII space character (one or more).