ExacTime 6000
Contents
1. Option 20E 500 150 m cable Option slots 0 Prerequisite GPS Option 26B 21A 10 MHz SINE WAVE OUTPUT The 10 MHz Sine Wave output is derived directly from the internal disciplined oscillator The long term stability is the same as the internal oscillator Option slots 1 Prerequisite Option 40 Connectors J3A B D or E 23x LIGHTNING ARRESTOR WITH CABLE The lightning arrestor option provides an inline unit that protects the GPS receiver from lightning surges It is provided with 25 feet low loss cable This option is desirable in lightning areas of the country Connectors are Type N at both ends of the cable Option 23A 25 7 5 m cable Option 23B 50 15 m cable Option slots 0 Prerequisite None 25 RACK MOUNT SLIDES The ExacTime 6000 and 6010 are provided with rack mount flanges but body support should be provided to avoid twisting the mounting flanges and front panel This rack mount slide kit fits either chassis The slides are furnished with hardware for mounting front and rear RETMA rails Option slots 0 Prerequisite None 26B 55144 HIGH GAIN GPS ANTENNA This antenna supports an antenna cable loss of up to 35dB It is required for Option 20D 400 120 m or 20E 500 150 m antenna cables Option slots 0 Prerequisites None 26C 55058 1 AIRBORNE GPS ANTENNA This antenna is required for all airborne installtions The antenna connector Is a miniature SMA type A short type N to SMA a2. Molex connector The input connections are completely isolated from chassis and the signal ground of the the DC DC converter power supply Not available with Option 15A Option slots 0 Prerequisite None Connectors J1 13A PARALLEL BCD OUTPUT D mS Time is output by parallel BCD digits representing days hours minutes and three digits of fractional seconds millisecond resolution The outputs standard HCMOS compatible Each capable of sinking and sourcing 4 mA Included in the output is a strobe signal is normally low going high when the data is being updated and going low the data is stable This signal s falling can be used as a clock to load data external registers Option slots 2 Prerequisite Option 40A ET6000 Option 40 ET6010 14A IEEE 488 BUS INTERFACE This option provides the same remote control commands and responses as the standard RS 232 O Option slots 2 Prerequisite Option 40D ET6000 Option 40 ET6010 Connectors J3 ET6000 J19 ET6010 20x LONG ANTENNA CABLE Cable type is Belden 9913 low loss cable with type N connectors at both ends Option 20A 100 foot cable Option 20B 200 foot cable Option 20C 300 foot cable Option slots 0 Prerequisite None ey A TE A w tw NE a A a a AG wi a J5 J J7 J8 J9 J10 as Ji2 3 5 8 89 cm 20x LONG ANTENNA CABLE Cable type is Belden 9913 low loss cable with type N connectors at both ends Option 20D 400 120 m cable
3. 10 TCXO 1E 7 Day 72dBc Hz 93d Bc Hz 115dBc Hz 126dBc Hz 2E 10 2E 10 1E 9 ExacTime 6000 EXACTIME 6000 amp 6010 OCXO ET6000 OCXO ET6010 OCXO 5E 10 Day 94dBc Hz 115dBc Hz 136dBc Hz 144dBc Hz SE 11 2E 11 4E 11 FIG 5 ExacTime 6000 ExacTime 6010 FIG 6 Exaclime 6010 RUBIDIUM ET6000 RB1 ET6010 RB1 5E 11 Month 82dBc Hz 91dBc Hz 134dBc Hz 144dBc Hz 3E 11 1E 11 3E 12 OPTIONS GUIDE This guide is designed to assist the user in customizing the ExaclTime Series 6000 Time and Frequency Generator The BNC connectors on the rear panel can be configured to provide the outputs listed on the data sheet The factory selections are J4 Tracking TTL J5 Locked TTL J s 1 PPS TTL J7 10 MHz sine J8 IRIG B AC J9 IRIG B DCLS TTL J10 Time Interval Input 1 PPS TTL The Exaclime unit has a plug in option motherboard with four 4 option pads refer to the Option Motherboard GPS Option 40x Options are implemented with plug in modules The following information identifies all available options Some option modules can be stacked together to provide additional functionality However stacking options sometimes requires the 2U chassis ExacTime 6010 3 5 8 89 cm chassis height Always consult the factory for assistance with stacked option configurations 01 MULTIPLE TIME CODE OUTPUT This option is described in detail in a sepa
4. Hz to 10 MHz 18 45 72 cm antenna mast Sine wave 1 to 5V P P 100 kHz to 10 MHz comer oat tin MOU eee Offset range nnnnX10 9 to nnnnX10 14 User s manual Power cord Autoranging e GPS subsystem Time accuracy After power up when LOCKED See ExacTime Options Guide for additional options and option details and using 200 position averages will be better then 125 nanoseconds relative to UTC with SA on within 3 hour using Rubidium oscillator 2 hours using Oven oscillator 1 hour using TCXO oscillator Frequency accuracy 90 of time better than 1 0E 9 TCXO 1 5E 10 OCXO 1 0E 11 Rubidium Position accuracy 100m 2drms with SA Less than 25m SEP without SA Maximum velocity 515 meters second 1 000 KPH Tracking channels 8 parallel Receiver frequency L1 1 575 GHz C A code Acquisition time Typically lt 5 minutes to first fix SYMMETRICOM INC 2300 Orchard Parkway San Jose California Symmetricom 951311017 y tel 408 433 0910 fax 408 428 7896 info symmetricom com 2005 Symmetricom Symmetricom and the Symmetricom logo are registered trademarks of Symmetricom Inc All other trademarks are www symmetricom com the property of their respective companies All specifications subject to change without notice DS ET6000 6010 D 0105 PDF
5. TIMING TEST amp MEASUREMENT ExacTime 6000 GPS Time amp Frequency Generator KEY FEATURES GPS Time and Frequency Reference Disciplined Quartz Oscillator Time Base Optional Disciplined Rubidium Oscillator Rapid Acquisition and Time Stabilization Six Programmable Output Signals 1 PPS Time Interval Measurement to 1 Nanosecond Automatic Daylight Savings Time Update gt External Frequency Measurement to 10 External Event Time Logging Up to 256 Event Storage Over 40 Signal Output and Function Options e RS 232 Input Output Port RS 232 Printer Port Free Remote Control Software for Windows 95 98 2000 INTRODUCTION Symmetricom s ExacTime Time and Frequency Generators are full featured GPS receivers that offer three time base oscillator options and a wide range of off the shelf optional features ExaclTime fits virtually any GPS time and frequency application The ExacTime 6000 is a 1 75 rack mount chassis that is configured to meet or exceed the demands of many applications including test and measurement metrology range instrumentation and telecommunications The extreme flexibility of this instrument allows configurations including time codes low phase noise frequencies pulse rates parallel time and many other outputs to Support specific needs The internal quartz time base oscillator can be upgraded to an oven quartz oscillator or to a rubidium oscillator A ti
6. cked TTL Locked Relay Tracking TTL Tracking Relay Event In Frequency In 1 PPS In Time Interval Input Output 110 Selector 10 MHz Out IRIG B DC Out Mux 1 Out J9 10 MHz Out IRIG B AC Out Mux 2 Out J8 10 MHz Out IRIG B Out Mux 4 Out J7 10 MHz Out IRIG B Out Mux 3 Out 1PPS eS 10 MHz Out IRIG B Out Mux 2 Out Locked Out J5 10 MHz Out IRIG B Out Mux 1 Out Tracking Out O J4 Defaults are in Bold FIG 2 Flexible input output signal selection FIG 3 ExacTime 6000 Back FIG 4 Exaclime 6010 Back l J11 Printer Port J12 Input Output Port J11 Printer Port J12 Input Output Port BASIC CONFIGURATION The two members of the ExacTime family of Time and Frequency Generators are pictured below The Exaclime 6010 provides additional internal space for option installation and also provides more rear panel space for input output connectors Please contact the factory for guidance in configuring the ExacTime to meet your requirements ExacTime Units can be optionally equipped with a variety of Oscillators designed to suit your precise needs The table below illustrates the part numbers and specifications for these Oscillator Options For more information contact Symmetricom Global Services or your local Sales Rep OSCILLATOR OPTION Part number Aging rate Phase noise 1Hz 10Hz 100Hz 1KHz Stability 1 Sec 10 Sec 100 Sec TCXO ET6000 TCXO ET60
7. dapter cable is furnished Option slots 0 27A TWELVE CHANNEL DISTRIBUTION BOARD This module is used in conjunction with Option 27B required to provide up to twelve buffered output signals on BNC connectors The larger ExacTime 6010 chassis 3 5 8 89 cm is required to accommo date the additional BNC output connectors on the rear panel Option slots 0 Prerequisites GPS Option 40 ET6010 27B DC to 10 MHz BUFFER MODULE One buffer module is required for each signal to be output up to twelve Twelve module sockets are provided on the Option 27A board The module can accommodate a wide range of signals from DC to 10 MHz It can be used for buffering pulse rates time codes and frequencies Many jumper selections are available under each buffer module socket Option slots 0 Prerequesite Option 27A 27D 1PPS PULSE BUFFER The 1PPS Pulse Buffer provides a 1PPS output at 10 volts peak into a 50Q load as provided by most Cesium atomic standards Option slots 0 Prerequesite Option 27A 33A 1 544 2 048 MHz SQUARE WAVE OUTPUT This module provides a square wave frequency output of either 1 544 MHz or 2 048 MHz selected by DIP switch that is phase locked to the internal disciplined oscillator The basic ExacTime will provide Stratum Il performance Stratum Il with Option 10B and Stratum with Option 15A Option slots 1 Prerequisite Option 40 33B T1 1 544 FRAMED ONES OUTPUT Provides an output of framed all one
8. me zone offset control is included with 1 2 hour resolution and a daylight saving time capability can be set for ten years These controls affect the LCD display time code output and the time in Symmetricom the RS 232 outputs The year can be preset to any value for test purposes For situations in which it is desirable to disable the oscillator disciplining process temporarily a flywheel mode Is provided While in flywheel mode the oscillator loop is opened and the natural purity of the oscillator is not perturbed by the disciplining function The ExacTime 6010 is a 3 9 rack mount chassis that is available to accommodate configurations that require more option space than Is available in the ExacTime 6000 1 75 chassis The basic unit provides six output BNC ports and one input BNC port The six output ports are user Selectable via box pin jumpers and front panel controls to generate frequency 10 MHz pulse rates 1 PPM to 10 MPPS and time code IRIG B Other frequency and time code outputs can be optionally added A front panel LCD panel gives the user a simple and intuitive control interface Remote control software for Windows Is included upon request FIG 1 Exaclime GPS Time amp Frequency Generator SPECIFICATIONS The capability of selecting any of several signals as Inputs and outputs to and from the basic ExacTime unit make it possible to meet most requirements with a basic unit without the necessi
9. n decade steps and 5 MPPS e Front panel Time code IRIG B into 50 3V P P Display LCD 2x40 characters Displays AC amp DC IEEE 1344 compliant time status satellite position Time code output is suppressed data frequency and control menu until accurate time is established Keypad 0 9 Menu Provides control of Status TTL Relay all functions 5 VDC X LOCKED X TRACKING X X ENVIRONMENTAL amp PHYSICAL SPECIFICATIONS l e Temperature TTL level into 50Q Operating Relay N O Contact 100 mA l S Unit 0 C to 50 C Printer outputs RS 232 9 pin D connector Antenna 40 C to 85 C Format A Year time status position and Storage interval at a programmed interval n P Format B Time D H M S CR on time le panes every second Antenna 550C to 100 C Humidity e Inputs l l aaa Unit 0 95 relative non condensing 1 PPS time interval An enna Unimien Signal TTL level pos or neg edge select an n anea e Power requirements 85 264 VAC 47 440 Hz lt 40 watts Accuracy lt 10 nanoseconds e Dimensions H in cm W in cm D in cm External event log ExacTime 6000 1 75 4 45 17 43 18 12 30 48 Signal TTL level pos or neg edge select ExacTime 6010 3 5 8 89 17 43 18 12 30 48 Resolution 100 nanoseconds 19 48 26 with rack mount ears Storage Up to 256 events l e Standard equipment External frequency measurement Square wave Logic 0 0 2 0 2 VDC GPS Antenna Logic 1 2 4 to 15 VDC 50 15 m of RG58 antenna cable 1
10. rate data sheet Three 3 simultaneous modulated time code outputs can be programmed with either the same or different time code formats Option slots 2 Prerequisite Option 40 Connectors J3A B amp CorJ3D E amp F 01A MULTIPLE TIME CODE DC LEVEL OUTPUT If Option 01 is selected this option provides DC level shift outputs for the output time codes Option slots 0 Prerequisite GPS Option 01 Connectors J3D E amp F 9390 6000 J13 9390 6010 06A The 1 MHz Sine Wave output is derived from the internal disciplined oscillator by frequency division The long term accuracy and stability is the same as the internal crystal oscillator Option slots 1 Prerequisite Option 40 Connectors J3A B DorE 1 MHz SINE WAVE OUTPUT 07A The 1 MHz Sine Wave output is derived from the internal disciplined oscillator by frequency division The long term accuracy and stability is the same as the internal crystal oscillator Option slots 1 Prerequisite Option 40 Connectors J3A B D orE 5 MHz SINE WAVE OUTPUT 08G Negative 48 VDC input power is connected via a 4 pin nylon Molex connector The input connections are completely isolated from the chassis and the signal ground the unit into the DC DC converter power supply Not available with Option 15A Option slots 0 Prerequisite None Connectors J1 48 VDC POWER FIG 7 ET6010 2U chassis O8CE 10 to 32 VDC POWER DC input power is connected via a nylon
11. s T1 signal to operate in telecommunications systems typically within the United States The basic ExacTime will provide Stratum III performance Stratum II with Option 10B and Stratum with Option 15A Option slots 2 Prerequisite Option 40B ET6000 Option 40 ET6010 Connectors J3A EXACTIME 6000 amp 6010 33C E1 2 048 FRAMED ONES OUTPUT Provides an output of framed all ones E1 signal to operate in telecommunications systems typically outside the United States The basic ExacTime will provide Stratum IIl performance Stratum II with Option 10B and Stratum with Option 15A Option slots 2 Prerequisite Option 40B ET6000 Option 40 ET6010 Connectors J3A 40x OPTION MOTHERBOARD This assembly provides the GPS unit with four option slots It is required for most of the option modules described in this Configuration Guide There is more than one version of this motherboard so care must be taken to select the Option Motherboard that is required to support a particular option Option slots 0 Prerequisite None Oscillator aging ET6000 amp ET6010 Specifications TCXO standard Aging 1 0E 7 day ELECTRICAI SPECIFICATIONS OCXO LPN optional Aging 5 0E 10 day Rubidium optional Aging 5 0E 11 month e Outputs 10 MHz sinusoid 1 Vrms into 502 lato 1 PPS digital output TTL level into 502 Remote control and Selectable pulse rates TTL level into 50Q 1PPM to data output RS 232 pin D 10 MPPS i
12. ty for adding options Figure 2 illustrates the capability The four pulse rate multiplexers each produce a Selected output of 1 PPM Mero i rey UPP WOOP oy Irie LOKP PS 100 KPPS i MPPS o MPPS 10 MPPS IRIG B DC GPS status Locked Tracking or 5 V These outputs are Selected either through the LCD menu or by remote control over the RS 232 input output port A 10 MHz sine wave can be chosen by internal jumper for any or all of the six output connectors Likewise IRIG B AC can be chosen for any or all of the six output connectors The factory default function of J10 is 1 PPS TTL input for displacement measurement but it can be selected as the Input to the Event Log Counter or as an External Frequency Measurement input J9 is factory set to output IRIG B DC while J8 is factory set to output IRIG B AC J is factory set to output Mux 3 digital signals with Mux 3 set to output 1 PPS Finally Jo and J4 can either be used to output GPS status or as duplicate outputs of Mux 2 and or Mux 1 Additional signal outputs are generated by the Exaclime 6000 through the option bay which uses the J3 area The larger ExacTime 6010 uses both the J3 and J13 areas as illustrated to the right Event Log Counter IRIG B Connector Pulse Rate Generator 10 MHz Sine Event e a IRIG B AC IRIG B DC Mux 1 Mux 2 Mux 3 Mux 4 10 MHz Wave Buffer gt Receiver Status Lo
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