Spectracom 8183A NETCLOCK User manual
MODEL 8183A NETCLOCK/GTP
GPS MASTER CLOCK
INSTRUCTION MANUAL
SPECTRACOM CORPORATION
95 Methodist Hill Drive
Suite 500
Rochester, NY 14623
PHONE 585-321-5800
FAX 585-321-5219
www.spectracomcorp.com
Copyright 2003 Spectracom Corporation. All rights reserved.
Contents of this publication may not be reproduced in any form
without the written permission of Spectracom Corporation.
REVISIONS, IF ANY, ARE LOCATED AT THE END OF THE MANUAL
MANUAL REVISION 1.2
July 2003
5-Year Warranty
SPECTRACOM 95 Methodist Hill Drive ROCHESTER NY 14623 USA
LIMITED WARRANTY________________________________
Spectracom warrants each new product manufactured and sold by
it to be free from defects in material, workmanship, and
construction, except for batteries, fuses, or other material normally
consumed in operation that may be contained therein, for five
years after shipment to the original purchaser (which period is
referred to as the "warranty period"). This warranty shall not
apply if the product is used contrary to the instructions in its
manual or is otherwise subjected to misuse, abnormal operations,
accident, lightning or transient surge, repairs or modifications not
performed by Spectracom.
The GPS receiver is warranted for one year from date of shipment
and subject to the exceptions listed above. The power adaptor, if
supplied, is warranted for one year from date of shipment and
subject to the exceptions listed above.
The Rubidium oscillator, if supplied, is warranted for two years
from date of shipment and subject to the exceptions listed above.
All other items and pieces of equipment not specified above,
including the antenna unit, antenna surge suppressor and antenna
pre-amplifier are warranted for 5 years, subject to the exceptions
listed above.
WARRANTY CLAIMS________________________________
Spectracom's obligation under this warranty is limited to in-factory
service and repair, at Spectracom's option, of the product or the
component thereof, which is found to be defective. If in
Spectracom's judgment the defective condition in a Spectracom
product is for a cause listed above for which Spectracom is not
responsible, Spectracom will make the repairs or replacement of
components and charge its then current price, which buyer agrees
to pay.
Spectracom shall not have any warranty obligations if the
procedure for warranty claims is not followed. Users must notify
Spectracom of the claim with full information as to the claimed
defect. Spectracom products shall not be returned unless a return
authorization number is issued by Spectracom. Spectracom
products must be returned with the description of the claimed
defect and identification of the individual to be contacted if
additional information is needed. Spectracom products must be
returned properly packed with transportation charges prepaid.
EXCEPT FOR THE LIMITED WARRANTY STATED ABOVE,
SPECTRACOM DISCLAIMS ALL WARRANTIES OF ANY KIND
WITH REGARD TO SPECTRACOM PRODUCTS OR OTHER
MATERIALS PROVIDED BY SPECTRACOM, INCLUDING
WITHOUT LIMITATION ANY IMPLIED WARRANTY OR
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
Spectracom shall have no liability or responsibility to the original
customer or any other party with respect to any liability, loss, or
damage caused directly or indirectly by an Spectracom product,
material, or software sold or provided by Spectracom,
replacement parts or units, or services provided, including but not
limited to any interruption of service, excess charges resulting from
malfunctions of hardware or software, loss of business or
anticipatory profits resulting from the use or operation of the
Spectracom product or software, whatsoever or howsoever
caused. In no event shall Spectracom be liable for any direct,
indirect, special or consequential damages whether the claims are
grounded in contract, tort (including negligence), or strict liability.
EXTENDED WARRANTY COVERAGE___________________
Extended warranties can be purchased for additional periods
beyond the standard five-year warranty. Contact Spectracom no
later than the last year of the standard five-year warranty for
extended coverage.
TABLE OF CONTENTS
SECTION 1 GENERAL INFORMATION
1.0 INTRODUCTION...................................................................................................................1-1
1.1 FEATURES ...........................................................................................................................1-2
1.2 WARRANTY INFORMATION AND PRODUCT SUPPORT .................................................1-2
1.3 MANUAL ERRATA AND SPECIAL DOCUMENTATION .....................................................1-3
1.4 UNPACKING.........................................................................................................................1-3
1.5 SPECIFICATIONS ................................................................................................................1-4
1.5.1 Receiver 1-4
1.5.2 Display 1-4
1.5.3 Status Indicators 1-4
1.5.4 RS-232 Serial Comm 1-5
1.5.5 RS-485 Remote Output 1-5
1.5.6 FAA IRIG B Outputs 1-6
1.5.7 1PPS Output 1-6
1.5.8 Standard 10 MHz Output 1-7
1.5.9 Input Power 1-7
1.5.10 Mechanical and Environmental 1-7
1.5.11 Model 8225 GPS Antenna Specifications 1-7
1.5.11.1 Electrical Specifications 1-7
1.5.11.2 Mechanical Specifications 1-8
1.5.12 Model 8226 Impulse Suppressor 1-8
1.5.13 Model 8227 Inline Amplifier 1-8
1.5.14 MP10-0000-0001 Grounding Panel 1-8
1.5.15 CA07xxx GPS Antenna Cable 1-8
SECTION 2 INSTALLATION
2.0 INTRODUCTION................................................................................................................... 2-1
2.1 MODEL 8225 GPS ANTENNA ............................................................................................. 2-1
2.1.1 Antenna Installation 2-1
2.2 ANTENNA CABLE ................................................................................................................ 2-2
2.2.1 Cable Lengths 2-3
2.3 MODEL 8226 IMPULSE SUPPRESSOR ............................................................................. 2-3
2.4 MP10-0000-0001 COPPER GROUNDING PANEL ............................................................. 2-5
2.5 MODEL 8227 GPS INLINE AMPLIFIER............................................................................... 2-6
2.6 NETCLOCK/GPS PREPARATION FOR USE...................................................................... 2-7
2.6.1 Antenna Connection 2-7
2.6.2 Power Connection 2-7
2.6.3 Chassis Ground 2-8
2.6.4 Configuration 2-8
2.7 INITIAL OPERATION............................................................................................................ 2-12
2.8 QUALIFYING THE INSTALLATION ..................................................................................... 2-13
2.8.1 GPS Signal Status 2-13
2.8.2 Tracking Histogram 2-13
SECTION 3 OPERATION
3.0 INTRODUCTION................................................................................................................... 3-1
3.1 FRONT PANEL FUNCTIONS .............................................................................................. 3-1
3.1.1 Display 3-1
3.1.2 GPS Lock Lamp 3-1
3.1.3 Time Sync Lamp 3-2
3.2 REAR PANEL FUNCTIONS ................................................................................................. 3-3
3.2.1 GPS Antenna 3-3
3.2.2 Standard 10 MHz Output 3-3
3.2.3 1PPS Output 3-3
3.2.4 FAA IRIG B Outputs 3-4
3.2.5 RS-232 Serial Communication Ports 3-5
3.2.6 Remote Outputs 3-6
3.2.7 Serial Setup Interface 3-7
3.2.8 Status Messages 3-8
3.2.9 DC Power 3-10
3.2.10 Chassis Ground 3-10
3.3 DATA FORMAT DESCRIPTION .......................................................................................... 3-10
3.3.1 Format 0 3-11
3.3.2 Format 1 3-13
3.3.3 Format 2 3-14
3.3.4 Format 3 3-16
3.3.5 Format 4 3-18
3.3.6 Format 90 3-19
3.4 REMOTE OUTPUT USAGE ................................................................................................. 3-21
3.4.1 RS-485 Guidelines 3-21
3.4.2 Connection Method 3-22
3.4.3 Termination 3-30
SECTION 4 SOFTWARE COMMANDS
4.0 INTRODUCTION................................................................................................................... 4-1
4.1 ANTENNA CABLE DELAY ................................................................................................... 4-3
4.2 DISPLAY OUTPUT CONFIGURATION................................................................................ 4-4
4.3 DISPLAY ALARM LOG......................................................................................................... 4-5
4.4 DATE..................................................................................................................................... 4-6
4.5 RESTORE FACTORY DEFAULTS....................................................................................... 4-7
4.6 DISPLAY TRACKING HISTOGRAM .................................................................................... 4-8
4.7 DAYLIGHT SAVING TIME.................................................................................................... 4-10
4.8 FRONT PANEL FORMAT..................................................................................................... 4-13
4.9 GPS SIGNAL STRENGTH ................................................................................................... 4-15
4.10 HELP DISPLAY..................................................................................................................... 4-18
4.11 IRIG CONFIGURATION ....................................................................................................... 4-19
4.12 LOCATION............................................................................................................................ 4-20
4.13 GPS LOCK TIME OUT.......................................................................................................... 4-21
4.14 REMOTE OUTPUT CONFIGURATION ............................................................................... 4-22
4.15 RESET GPS RECEIVER ...................................................................................................... 4-23
4.16 SERIAL COMM CONFIGURATION...................................................................................... 4-24
4.17 SET MODE ........................................................................................................................... 4-26
4.18 STATUS COMMAND............................................................................................................ 4-27
4.19 SYNC TIME OUT .................................................................................................................. 4-28
4.20 TIME...................................................................................................................................... 4-29
4.21 TEST MODE ......................................................................................................................... 4-30
4.22 VERSION COMMAND.......................................................................................................... 4-31
SECTION 5 SERVICE INFORMATION
5.0 INTRODUCTION................................................................................................................... 5-1
5.1 RECEPTION TROUBLESHOOTING.................................................................................... 5-1
5.1.1 No Reception 5-1
5.1.2 Low GPS Quality 5-2
5.2 OSCILLATOR ADJUSTMENT .............................................................................................. 5-4
5.2.1 Adjustment Procedure 5-4
APPENDIX A FAA IRIG CODE DESCRIPTION
A.0 INTRODUCTION................................................................................................................... A-1
A.1 MODEL 8228 GPS ANTENNA ............................................................................................. A-1
A.1.1 FAA IRIG B General Description A-1
ILLUSTRATIONS
FIGURE 1-1 NETCLOCK/GPS MASTER CLOCK 1-1
FIGURE 2-1 ANTENNA INSTALLATION 2-2
FIGURE 2-2 MODEL 8226 IMPULSE SUPPRESSOR 2-3
FIGURE 2-3 CONNECTOR ASSEMBLY INSTRUCTIONS 2-4
FIGURE 2-4 GROUNDING PLATE INSTALLATION 2-5
FIGURE 2-5 MODEL 8227 GPS INLINE AMPLIFIER 2-6
FIGURE 2-6 CABLE GUIDELINES 2-7
FIGURE 3-1 NETCLOCK/GPS FRONT PANEL 3-2
FIGURE 3-2 NETCLOCK/GPS REAR PANEL 3-3
FIGURE 3-3 IRIG CONNECTOR 3-4
FIGURE 3-4 SERIAL COMM PIN NUMBERING 3-5
FIGURE 3-5 REMOTE OUTPUTS 3-6
FIGURE 3-6 RS-485 OUTPUT 3-7
FIGURE 3-7 PIN NUMBERING 3-7
FIGURE 3-8 ONE-WAY BUS INSTALLATION 3-22
FIGURE 3-9 SPLIT BUS CONFIGURATION 3-23
FIGURE 3-10 WIRE STRAIN RELIEF 3-24
FIGURE 3-11 TIMEVIEW RS-485 INTERFACE 3-25
FIGURE 3-12 MODEL 8179T TIMETAP RS-485 INTERFACE 3-25
FIGURE 3-13 MODEL 8188 RS-485 INTERFACE 3-26
FIGURE 3-14 TIMETALK RS-485 INTERFACE 3-26
FIGURE 3-15 TIMEBURST RS-485 INTERFACE 3-27
FIGURE 4-1 COMMAND STRUCTURE 4-1
FIGURE 4-2 TIME DIFFERENCE MAP 4-14
FIGURE A-1 FAA IRIG B TIME CODE A-1
TABLES
TABLE 1-1 MODEL 8183 ANCILLARY KIT 1-3
TABLE 3-1 IRIG PIN OUT 3-4
TABLE 3-2 SERIAL COMM PIN ASSIGNMENTS 3-5
TABLE 3-3 PIN ASSIGNMENTS 3-8
TABLE 3-4 QUALITY INDICATORS 3-15
TABLE 3-5 CABLE SOURCES FOR RS-485 LINES OVER 1500 FEET 3-21
TABLE 3-6 CABLE SOURCES FOR RS-485 LINES UNDER 1500 FEET 3-22
TABLE 4-1 ALPHABETICAL LIST OF COMMANDS 4-2
TABLE 5-1 TYPICAL ANTENNA CABLE RESISTANCE VALUES 5-1
TABLE 5-2 TELEVISION STATIONS WITH GPS JAMMING POTENTIAL 5-3
TABLE 5-3 FM RADIO FREQUENCIES WITH GPS JAMMING POTENTIAL 5-3
TABLE A-1 FAA TIME ERROR INDICATORS A-4
Illustrations road map
FIGURE 1-1 NETCLOCK/GPS MASTER CLOCK Net-per.cgm
FIGURE 2-1 ANTENNA INSTALLATION 8226_b.eps
FIGURE 2-2 CABLE CLAMP INSTALLATION Net-pc.cgm
FIGURE 3-1 NETCLOCK/GPS FRONT PANEL Net-fr.cgm
FIGURE 3-2 NETCLOCK/GPS REAR PANEL Net-bk.cgm
FIGURE 3-3 SERIAL COMM PIN NUMBERING Femdin.pcx
FIGURE 3-4 REMOTE OUTPUTS Remotout.cgm
FIGURE 3-5 RS-485 OUTPUT Resides in document
FIGURE 3-6 PIN NUMBERING Femdin.pcx
FIGURE 3-7 TIMER RELAY CONTACTS Resides in document
FIGURE 3-8 ALARM RELAY CONTACTS Resides in document
FIGURE 3-9 ONE-WAY BUS INSTALLATION 1way.wmf
FIGURE 3-10 SPLIT BUS CONFIGURATION Splitbus.wmf
FIGURE 3-11 TIMEVIEW RS-485 INTERFACE 81838177.pcx
FIGURE 3-12 MODULAR JACK INTERFACE Gpsmodjk.pcx
FIGURE 3-13 MODEL 8179T TIMETAP RS-485
INTERFACE
81838179.pcx
FIGURE 3-14 TIMETALK RS-485 INTERFACE Resides in document
FIGURE 3-15 TIMEBURST RS-485 INTERFACE 81838185.pcx
FIGURE 4-1 COMMAND STRUCTURE Resides in document
FIGURE 4-2 TIME DIFFERENCE MAP Tzmap.eps (zipped)
FIGURE 5-1 MODEL 8226 IMPULSE SUPPRESSOR Impulseb.eps
FIGURE 5-2 MODEL 8227 INLINE AMPLIFIER Gpsamp.eps
FIGURE 5-3 CABLE GUIDELINES Cablgide.wmf
FIGURE 5-4 MODEL 8213 ANTENNA MOUNT 8226_a.eps
FIGURE A-1 IRIG B TIME CODE Irigb.pcx (zipped)
FIGURE A-2 IRIG E TIME CODE Irige.pcx (zipped)
SECTION 1: GENERAL INFORMATION
1.0 INTRODUCTION
1.1 FEATURES
1.2 WARRANTY INFORMATION AND PRODUCT SUPPORT
1.3 MANUAL ERRATA AND SPECIAL DOCUMENTATION
1.4 UNPACKING
1.5 SPECIFICATIONS
NetClock/GTP Instruction Manual Page 1-1
GENERAL INFORMATION
1.0 INTRODUCTION
The Spectracom NetClock/GTP Master Clock, shown in Figure 1-1, is a precise,
traceable Global Time Provider. The NetClock/GTP receives and recovers time
information from the Global Positioning System (GPS) constellation of satellites.
The GPS constellation consists of 24 satellites placed in 6 orbital planes spaced
equally around the equator and inclined at a 55-degree angle. This design
assures reliable worldwide coverage 24 hours a day. Each satellite contains a
redundant system of highly accurate and stable atomic clock sources. The
satellite’s timing, orbital position and other system parameters are monitored and
controlled by ground stations maintained by the US Department of Defense and
US Naval Observatory.
The NetClock/GTP Master Clock provides timing outputs accurate to within 100
microseconds of UTC. Standard Master Clock outputs include RS-232,
RS-485, FAA Modified IRIG B and a one pulse per second. The NetClock/GTP
is ideally suited as a Master Clock in all applications requiring an accurate and
traceable time source. Typical applications include computer network timing,
utility billing, financial transactions, public safety and transportation.
FIGURE 1-1 NETCLOCK/GTP MASTER CLOCK
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