Arbiter Systems 1088A Operation Manual Download Page 10

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CONTENTS

8.2.2

Event Timing Latency

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8.2.3

Deviation Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8.2.4

Measurement Principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8.2.5

Event Timer Input Channel Configuration . . . . . . . . . . . . . . . . . . . .

8.2.6

Firmware Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8.2.7

Displaying Data

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8.2.8

RS-232C Event Trapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8.2.9

Event Trapping Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Serial Communication and Command Set

9.1

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9.2

Command Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9.2.1

Broadcast Mode Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9.2.2

Event Mode Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9.2.3

Status Mode Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9.2.4

Local/Daylight Savings Time Setup Commands . . . . . . . . . . . . . . . . .

9.2.5

Front Panel Control Commands

. . . . . . . . . . . . . . . . . . . . . . . . .

9.2.6

IRIG-B Data Output Commands . . . . . . . . . . . . . . . . . . . . . . . . .

9.2.7

Position Data Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9.2.8

Survey Mode Commands

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9.2.9

Date and Time Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9.2.10 Programmable Pulse Output Commands . . . . . . . . . . . . . . . . . . . . .

9.2.11 Antenna System Delay Commands . . . . . . . . . . . . . . . . . . . . . . . .

9.2.12 Out-of-Lock Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9.2.13 Miscellaneous Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9.3

Communication Port Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10 Startup and Basic Operation

10.1 Initial Startup Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10.1.1 Clock Time, Startup Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10.2 Front Panel Indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10.2.1 Display Indication at Startup . . . . . . . . . . . . . . . . . . . . . . . . . . .

10.2.2 Other Display Indications When Unlocked . . . . . . . . . . . . . . . . . . . .

10.2.3 Status Display Indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10.2.4 Event/Deviation Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10.2.5 IRIG-B Time Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10.3 Clock Status Display Modes & Fault Table

. . . . . . . . . . . . . . . . . . . . . . .

10.4 Time Display Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10.4.1 Date and Time Display, Universal Time Coordinated (UTC)

. . . . . . . . .

10.4.2 Time of Year Display, UTC . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10.4.3 Date and Time Display, Local Time . . . . . . . . . . . . . . . . . . . . . . .

10.4.4 Time of Year Display, Local Time

. . . . . . . . . . . . . . . . . . . . . . . .

10.4.5 Daylight Saving/Summer Time . . . . . . . . . . . . . . . . . . . . . . . . . .

10.5 Position Display Modes

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10.5.1 Longitude Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10.5.2 Latitude Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Summary of Contents for 1088A

Page 1: ...MODEL 1088A B SATELLITE CONTROLLED CLOCK OPERATION MANUAL ARBITER SYSTEMS INC PASO ROBLES CA 93446 U S A WWW ARBITER COM ...

Page 2: ...s This manual describes the set up and operation of the Model 1088A B series satellite controlled clocks ROM Dates This version of the manual is written for clocks having ROM dates of 3 August 2011 or later Any changes made in subsequent revisions which affect operation or specifications will be noted with either a a new manual or b a revised version of this manual To display the ROM date for your...

Page 3: ...URPOSE AND BUYER EXPRESSLY WAIVES ALL OTHER WARRANTIES This limited warranty does not extend to any product which has been subject to 1 Improper use or application abuse or operation beyond its rated capacity or contrary to the instructions in the operation and maintenance manuals if any 2 Accident 3 Repair or maintenance performed by Buyer except in accordance with the operation and maintenance m...

Page 4: ...iv ...

Page 5: ...Setup Menus Chapter 7 Timing IRIG B and Pulses Chapter 8 Relay Contacts and Event Inputs Chapter 9 Serial Communications and Command Set Chapter 10 Startup and Basic Operation Appendix A Specifications and Technical Details Appendix B Using Surge Arresters Appendix C Options List Appendix D CE Mark Certification Appendix E Statement of Compliance Index Copyright Arbiter Systems Incorporated Februa...

Page 6: ...vi ...

Page 7: ...2 3 3 Event Input 10 2 3 4 RS 232 Communication Ports 10 2 3 5 Form C Relay Contacts 11 2 3 6 Standard Inputs Outputs 11 3 Connecting Inlet Power Input and Output Signals 13 3 1 Physical Configuration 13 3 2 Standard IEC 320 Power Inlet Module 13 3 2 1 Cordsets and Plug Styles for IEC 320 Inlet Module 14 3 2 2 IEC 320 Connecting Power to the 1088B 14 3 3 Option 07 110 to 370 Vdc Terminal Power Str...

Page 8: ...ings Via Internal Jumpers 27 5 2 1 Cover Removal 29 5 2 2 JMP1 Event A and B Selection 29 5 2 3 JMP2 Frequency Reference Selection 29 5 2 4 JMP3 External Reference Input Frequency 30 5 2 5 JMP4 JMP7 JMP10 JMP13 Output Function Selection 30 5 2 6 JMP5 JMP8 JMP11 JMP14 Output Function Selection 30 5 2 7 JMP6 JMP9 JMP12 JMP15 Output Mode Selection 30 5 2 8 I O Connectors Used as Output 31 5 2 9 JMP16...

Page 9: ...G B and Pulses 57 7 1 Introduction 57 7 2 Timing Output Description 58 7 2 1 Standard Inputs Outputs 58 7 2 2 Digital Drivers 58 7 2 3 Analog Drivers 58 7 3 Output Signal Description 59 7 3 1 IRIG B Description 59 7 3 2 Modulated and Unmodulated IRIG B 60 7 3 3 IRIG B IEEE 1344 Extension 60 7 3 4 1 Pulse per Second 1 PPS 60 7 3 5 Programmable Pulse PROG PULSE 61 7 4 Connecting Outputs 61 7 4 1 Att...

Page 10: ...mable Pulse Output Commands 87 9 2 11 Antenna System Delay Commands 89 9 2 12 Out of Lock Commands 89 9 2 13 Miscellaneous Commands 89 9 3 Communication Port Information 91 10 Startup and Basic Operation 93 10 1 Initial Startup Sequence 93 10 1 1 Clock Time Startup Mode 93 10 2 Front Panel Indication 94 10 2 1 Display Indication at Startup 94 10 2 2 Other Display Indications When Unlocked 94 10 2 ...

Page 11: ...m 101 A 4 1 Antenna Cable 101 A 5 Operator Interface 102 A 5 1 Setup Methods 102 A 5 2 Setup Functions 102 A 5 3 Display 102 A 5 4 Display Functions 102 A 5 5 Annunciators 102 A 6 System Interface 103 A 6 1 RS 232C Interface 103 A 6 2 Broadcast Data Formats 103 A 7 Physical Specifications 103 A 7 1 Dimensions 103 A 7 2 Weight 103 A 7 3 Power Requirements 104 A 7 4 Power Connector 104 A 7 5 Electro...

Page 12: ...s 127 C 7 Option 08 Inlet Power Supply Description 128 C 7 1 10 to 60 Vdc ONLY Terminal Power Strip SWC 128 C 7 2 Specifications 128 C 8 Options 10 Battery Backup Obsolete 129 C 9 Option 11 Four Additional Outputs and Battery Backup Obsolete 129 C 10 Option 12 OCXO and Four Additional Outputs 130 C 10 1 General Description 130 C 10 2 Specifications 130 C 10 3 Firmware Setup for Option 12 130 C 10 ...

Page 13: ...ion 18 Setup 158 C 15 Option 19 Model 1088B Fault Relay 161 C 15 1 General Description 161 C 15 2 Specifications 161 C 15 3 Relay Contacts 161 C 15 4 Terminal Strip 161 C 15 5 Option 19 Firmware Setup 162 C 15 6 Connections 162 C 15 7 Configuration 162 C 16 Option 20A Four Fiber Optic Outputs 165 C 17 Option 23 COMTRADE Sample Rate Generator 168 C 17 1 General Description 168 C 17 2 Principles of ...

Page 14: ...put Jumper Setting Changes 193 C 21 Option 32 33 NTP Server Obsoleted by Opt34 195 C 21 1 General Description 195 C 21 2 Jumper Settings 197 C 21 3 Firmware Configuration 198 C 21 4 General Configuration 200 C 21 5 Basic Parameters 200 C 21 6 NTP Server Parameters 200 C 22 Option 34 NTP PTP Server 202 C 22 1 General Description 202 C 22 2 Option 34 Setup 203 C 22 3 Web Interface 206 C 22 4 SSH Con...

Page 15: ...rd Input Output Connectors 11 3 1 IEC 320 Power Supply Inlet Description 14 3 2 Option 07 Power Supply Inlet Connector 15 3 3 Option 08 Power Supply Inlet Connector 15 3 4 Option 15A Power Supply Inlet Connector 16 3 5 Option 15B Power Supply Inlet Connector 16 4 1 Antenna Assembly for Mounting 20 4 2 Antenna Mounting Bracket 21 4 3 Antenna Mounting with AS0044600 21 4 4 GPS Surge Arrester 22 5 1 ...

Page 16: ...nnector 127 C 7 Option 08 Power Supply Terminal Strip Connector 128 C 8 Option 12 Output Signal Jumper Locations 133 C 9 Option 17 Firmware Setup 136 C 10 Option 17 Output Connector 141 C 11 Option 17 Output Jumper Settings 145 C 12 Option 17 Board Layout and Jumper Locations 146 C 13 Option 17 RS 232 Port Setup 148 C 14 Option 18 Firmware Setup 155 C 15 Option 18 Network Configuration 156 C 16 Op...

Page 17: ...tatus Page 218 C 46 NTP Configure Page 219 C 47 NTP Authentication Page 220 C 48 Contact and Version Information Pages 221 C 49 SSH Console Interface Startup Screen 222 C 50 System Configure Page Using SSH 223 C 51 Configure System Password Using SSH 224 C 52 Checking Network Status Using SSH 225 C 53 Configure Network Settings Using SSH 226 C 54 View Operation Using SSH 227 C 55 View SNMP Operati...

Page 18: ...xviii LIST OF FIGURES ...

Page 19: ...e Current vs Voltage 59 7 2 Available IRIG B Time Codes 59 7 3 IRIG B Code Designations 61 9 1 Fault Indications and Definitions 72 9 2 Survey Position Hold Status 78 9 3 System Status Information Chart 79 9 4 Unlocked Time Quality 79 9 5 Auto Survey Setup Conditions 85 9 6 Option Control Settings 90 9 7 Main RS 232C Port Pin Definitions 91 10 1 Fault Conditions 96 A 1 Setup Functions Listed 102 A...

Page 20: ...mper Settings 173 C 10 Example Output Load and Loop Distance Matrix 177 C 11 Option 28 B2 Broadcast Time Deviation Values 187 C 12 Option 29 Operating Modes of SSR Outputs 191 C 13 Option 29 Output Connectors and Setup Jumpers 192 C 14 Option 32 33 Jumper Truth Table 197 C 15 Null Modem Cable Connections 204 C 16 Option 34 LED Indications 205 C 17 Partial List of POSIX Time Zone Strings 245 C 18 O...

Page 21: ...Model 1088A B series clocks are electronic devices and use static sensitive components in their operation Therefore use care when handling against static discharges Generally these components are protected in their normal situation however some of these are accessible when the cover is removed CAUTION Antenna Input Connector Connect only the antenna cable coming from the antenna into this connecto...

Page 22: ...a 19 inch system rack These ears have four mounting holes two of which are used to attach them to the sides of the clock Since it is required to remove the M25 screws which attach the cover to the chassis it may be good to attach the ears after first making any jumper configuration inside the clock You will want to return to this section after making these changes See Chapter 5 Setting Internal Ju...

Page 23: ...1 4 Attaching Rack Mount Ears to 1088A B Series Clocks 3 Figure 1 2 Attaching Rack Mount Ears ...

Page 24: ...4 Unpacking the Clock ...

Page 25: ... two line by twenty character LCD eight button keypad ON OFF switch the battery power option switch is optional The upper row of keys are information keys and the lower row of keys are configuration keys In the figure below are illustrated the front panels of all of these clocks illustrating all of the indicators and controls Figure 2 1 Model 1088B Front Panel Description Definitions for the annun...

Page 26: ...ceiver See Section 10 3 2 2 2 LED Status Indicators Four LED s provide information about the operational status of the instrument The Operate and On Line LEDs are green and the Out of Lock and Fault LEDs are red For normal operation with the clock locked and accurate the two green LEDs should be ON and the two red LEDs should be OFF Three LED s provide information about the clock power backup batt...

Page 27: ...in data entry mode UP select upper value increase numerical value DOWN select lower value decrease numerical value ENTER install selected value move cursor right in data en try mode Table 2 2 Command Key Definitions 2 2 4 LCD Display The Model 1088A B series clocks contain a liquid crystal display LCD which provides a 20 character by 2 line readout The readout displays instrument status time posit...

Page 28: ... acquisition and synchronization Setup Invokes a series of menus used to adjust configurable parameters within the clock In numeric data entry mode moves the cursor to the left Up Used in conjunction with the Setup menus to adjust values upward or to scroll upward through the available menu choices Also assists in navigating through main Setup menus in normal order Down Used in conjunction with th...

Page 29: ...85 to 264 Vac 47 to 440 Hz and 110 to 370 Vdc Figure 2 3 Standard Power Supply Option 07 Terminal Power Strip with a range of 85 to 264 Vac 47 to 440 Hz and 110 to 370 Vdc Figure 2 4 Option 07 Power Supply Termi nal Power Strip Connector Option 08 10 to 60 Vdc ONLY Terminal Power Strip BE SURE TO OBSERVE COR RECT POLARITY as the power supply used with Option 08 will not accept reverse input polari...

Page 30: ...ultimeter and probe from the center pin of the connector to the threads Voltage range is 4 9 to 5 1 Vdc For further information see Chapter 4 Antenna and Cable Information Figure 2 8 GPS Antenna Connector 2 3 3 Event Input For timing external events based on the GPS synchronized time use the Event Input function with two separate connectors J3 Event B input Standard I O and J4 Event A input Standa...

Page 31: ...see Section C 15 for Option 29 see Section C 20 2 3 6 Standard Inputs Outputs The Model 1088B has four BNC connectors used for configurable inputs and outputs the functions of which are based on setting internal jumpers The factory sets these jumpers at the time of purchase and they may be changed at any time as required As outputs all connectors may be set to one of twenty two different signals a...

Page 32: ...12 Front and Rear Panels ...

Page 33: ...ction 4 4 1 thus the entire cable length should be used with any excess coiled up and placed out of the way Arbiter Systems offers standard accessories allowing the antenna to be mounted up to 240 m 800 ft from the clock if longer cable runs are required These are described in Table 4 2 If a longer antenna cable than this is required please contact the factory for advice Model 1088B Power Supplies...

Page 34: ...8 Switzerland SEV 1011 1959 220V P09 North America and ROC NEMA 5 15P CSA C22 2 42 120V P10 Japan JIS8303 120V Table 3 1 Available IEC 320 Cordsets by Country 3 2 2 IEC 320 Connecting Power to the 1088B Connect the IEC 320 plug to the IEC 320 connector on the 1088B and then connect the wall plug into the wall socket 3 3 Option 07 110 to 370 Vdc Terminal Power Strip This option replaces the standar...

Page 35: ...d wire connect the positive and negative leads from the station batteries to the corresponding Option 08 terminals Be sure to observe the correct polarity as the power supply used with the Option 08 will not accept reverse input polarity CAUTION DO NOT connect Option 08 module to any ac voltage source 3 5 Option 15A 110 to 170 Vdc Terminal Power Strip Option 15A for the Model 1088A B is designed t...

Page 36: ...ion 15B Connecting Inlet Power When wiring this power supply make sure to first connect an earth ground wire to the terminal strip connector labeled G for ground Positive and negative terminals are marked on the terminals as and After connecting a ground wire connect the positive and negative leads from the station batteries to the corresponding Option 07 terminals 3 7 Fuse Types and Locations Use...

Page 37: ...Table 3 2 above for the correct fuse configured for your option 3 8 Connecting Output Signals Output signals may be connected through designated standard BNC or option connector For standard I O connectors see Section 2 3 6 Connectors are standard female BNC For Options that have terminals for output connectors see Appendix C for details about those options and connectors As an example the Option ...

Page 38: ...18 Connecting Inlet Power Input and Output Signals ...

Page 39: ... clear view of the sky from 10 degrees above the horizon to directly overhead for all points of the compass Minimal installations where the antenna is mounted in a less favorable location may work however reception may be somewhat limited during certain hours of the day 4 1 1 Mounting the Antenna The standard antenna is designed for pole mounting on a 26 mm pole 1 05 in OD or 3 4 in ID pipe with e...

Page 40: ...racket allows in stallation of the antenna on a mast or pipe up to about 2 inches in diameter and a different clamp may be substituted for use with a larger diameter pipe All metallic hardware is stainless steel Also the bracket can be mounted to a wall a roof or any other flat surface For complete details request document number PD0024700 Installation Instructions for Arbiter Systems GPS Antenna ...

Page 41: ...4 1 GPS Antenna Installation 21 Figure 4 2 Antenna Mounting Bracket Figure 4 3 Antenna Mounting with AS0044600 ...

Page 42: ...voltage for all models of clocks This signal should be between 4 9 and 5 1 Vdc 4 2 3 Checking the Antenna Resistance Checking the internal resistance of the Arbiter GPS antenna is not as useful as verifying the antenna operation mentioned above Antenna resistance measures several megohms with meter probes at one polarity and less so if you change the meter probe polarity older style antennas can m...

Page 43: ... physical length of the cable determine cable delay During the initial factory calibration of the clock a value for cable delay based upon the length and type of cable supplied is entered into the clock memory Firmware uses this figure to counteract the effect that the delay has upon GPS timing accuracy The value entered for a standard 15 meter cable is 60 nanoseconds For other cable options the d...

Page 44: ... CA0021330 30 m 100 ft cable RG 6 119 ns 9 dB CA0021345 45 m 150 ft cable RG 6 177 ns 13 dB CA0021360 60 m 200 ft cable RG 6 236 ns 17 dB CA0021375 75 m 250 ft cable RG 6 295 ns 21 dB WC0004900 305 m 1000 ft roll RG 11 3 92 ns m 17 5 dB 100 m AS0044800 RG 11 crimp tool and 25 connectors N A N A AS0044700 21 dB in line amplifier 1 ns 21 dB Table 4 2 GPS Cable Data and Accessory Information Physical...

Page 45: ...ort or open circuit condition in the antenna cable will render the clock inoperable Prior to initial operation or if problems are suspected perform the Antenna Cable Operational Test Procedure described in Section 4 2 Connection to Antenna The male Type F connector on one end of the antenna cable mates with the female Type F connector on the antenna Avoid placing mechanical stress on the cable att...

Page 46: ...26 GPS Antenna and Cable Information ...

Page 47: ...ng Hardware Settings Via Internal Jumpers The 1088B incorporate a flexible input and output I O selection system which is made possible by an innovative internal jumper scheme Each of the four standard rear panel I O connectors can be reconfigured to perform any of the available output functions Alternatively any or all of the I O connectors can be set to act as an input to the 1088B However each ...

Page 48: ...28 Setting Internal Jumpers Figure 5 1 Model 1088B Main Board ...

Page 49: ...or two possible event inputs Event A and Event B Jumper 1 selects the port to which the Event A signal is applied either the standard I O connector J4 or the main RS 232 port Position A selects the standard I O and position B selects the main RS 232 port Event B input is always applied to J3 Event A and Event B alternatively provide for 1 PPS deviation measurements These measurements are continuou...

Page 50: ...on jumpers refer to the two analog signals available from setting jumper positions 1 and 2 They will not be referred to in the setup but listed for your information 5 2 6 JMP5 JMP8 JMP11 JMP14 Output Function Selection These jumpers are essentially the same as JMP13 JMP10 JMP7 and JMP4 in that order however they exist because they were used to signify the difference between digital signals and ana...

Page 51: ...6 A 1 PPH 17 A 1 PPS 18 A Programmable Pulse 19 A Out of Lock 20 A IRIG B Modified Manchester 21 A Spare 5 V CMOS 22 A Table 5 2 Output Signal Function Selection Default jumper selections 5 2 8 I O Connectors Used as Output For each I O connector it is necessary to set 2 jumpers in order to assign the output or input signal The following paragraphs describe the procedure for setting these jumpers ...

Page 52: ...eration this jumper may be set to position B allowing the CMOS outputs to be paralleled and driven by the on line clock Normally this jumper will be configured as required when delivered from the factory and set to position A 5 2 11 I O Connector Used as Input Any of the four I O connectors included with the standard model can be reconfigured to operate as an input However each connector is restri...

Page 53: ...equirements For a complete list of setup menus see Table 6 1 There are two methods available for configuring the Model 1088B 1 Using the lower row of keys on the front panel and 2 using either the main RS 232C port or Option RS 232C port Both methods are described in this section For complete information on configuring all clocks remotely through either serial port please refer to Chapter 9 Serial...

Page 54: ... press ENTER to move the cursor to the right UP Press the UP key within the SETUP menus to adjust numerical values upward or to scroll upward through the available menu choices The UP key also assists in navigating through main Setup Menus in normal order DOWN Press the DOWN key within the SETUP menu to adjust numerical values downward or to scroll downward through available menu choices Also assi...

Page 55: ...nus To exit any configuration menu without saving press any of the upper row of keys before pressing ENTER which installs a new value To return to the configuration menus press SETUP again If you make a configuration error you can scroll through the menus again and press ENTER when you find the menu you want to change 6 2 Setting the Main RS 232C Port Press SETUP key to configure the main RS 232C ...

Page 56: ...anged from the front panel Figure 6 2 Serial Port Parameter Setup 6 2 2 Setting the Broadcast Mode from Main RS 232 The Set Broadcast Mode menu allows you to configure any of these clock models to broadcast ASCII time date related data from the available RS 232C ports With the UP DOWN keys select the desired broadcast mode and press ENTER to immediately start the broadcast RS 232C see Section 9 2 ...

Page 57: ... Saving settings if they apply Offsets may be adjusted in 15 minute increments up to plus or minus 12 hours Daylight Saving is adjusted for start and stop times based on month week of month day and time of day See menu in Section 6 3 1 to set up basic DST adjustment RS 232C see Section 9 2 4 Figure 6 4 Local Hour Setup ...

Page 58: ...tings The default setup is for North America where DST begins on the second Sunday of March at 2 am and ends on the first Sunday of November at 2 am Go through each setting and verify that the settings are valid To adjust and install values press the UP DOWN keys to adjust the desired value and ENTER key to install that value and proceed to the next setting RS 232C see Section 9 2 4 Figure 6 5 Aut...

Page 59: ... minute Unlocked indications include the red UNLOCKED LED being ON and if equipped the Out of Lock relay changing state RS 232C see Section 9 2 12 Figure 6 6 Out of Lock Setup Extend Relay Start means that the clock will extend the time that the clock is not considered stabilized the unlocked LED is lit and if equipped the out of lock relay indicates an out of lock condition Choose NO for the stan...

Page 60: ...gure how the back light operates If back light is not installed then the Set Back Light menu will have no effect Settings are either 1 Back Light OFF 2 Back light ON or 3 Back light AUTO In the Auto setting the back light will operate for approximately 30 seconds before switching OFF RS 232C see Section 9 2 5 Figure 6 7 Back Light Setup ...

Page 61: ...he GPS signal received at the GPS antenna to reach the GPS receiver The delay in nanoseconds 10 9 seconds is a product of the length of the cable and the its velocity factor Without compensating for the cable delay the time would be slow by this amount RS 232C see Section 9 2 11 Figure 6 8 System Delay Setup ...

Page 62: ...iseconds to 600 seconds depending on the application and configuring the pulse to occur at either UTC or Local time RS 232C see Section 9 2 10 Figure 6 9 Programmable Pulse Setup 6 7 1 Entering Numerical Values When installing numerical values first use the UP DOWN keys to change the digits and then the SETUP and ENTER to move the cursor left or right Then use the UP DOWN keys as before to change ...

Page 63: ...nds Per Pulse mode to generate a pulse every X number of seconds from 1 to 60 000 seconds and a Pulse Width of from 10 milliseconds to 600 seconds Refer to Section 6 7 above for additional detail on the Programmable Pulse mode RS 232C see Section 9 2 10 Figure 6 10 Seconds Per Pulse Setup ...

Page 64: ... mode to generate a pulse every hour at the number of specified seconds from 0 to 3599 seconds after the hour Refer to Section 6 7 above for additional detail on the Programmable Pulse mode and Entering Numerical Values RS 232C see Section 9 2 10 Figure 6 11 Pulse Per Hour Setup ...

Page 65: ...e Pulse Per Day mode to generate a pulse every day at the specified hour minute second and fractional seconds Refer to Section 6 7 above for additional detail on the Programmable Pulse mode and Entering Numerical Values RS 232C see Section 9 2 10 Figure 6 12 Pulse Per Day Setup ...

Page 66: ...e per year at the specified Julian Day hour minute second and fractional seconds For reference many calendars indicate the Julian Day Refer to Section 6 7 above for additional detail on the Programmable Pulse mode and Entering Numerical Values RS 232C see Section 9 2 10 Figure 6 13 Single Trigger Setup ...

Page 67: ...se mode that causes the output voltage to be held high and go low for six seconds on the day four seconds on the hour and two seconds on the minute Note Make sure to set the Pulse Polarity to negative for normal operation See Section 6 7 7 RS 232C see Section 9 2 10 Figure 6 14 Slow Code Setup ...

Page 68: ... pulse is off and transitions high 5 Vdc when on 2 Negative the voltage is held high 5 Vdc when the pulse is off and transitions low 0 Vdc when on To set up the pulse polarity first set up the programmable pulse mode e g Single Trigger and then go back into the Prog Pulse menu and set up the polarity separately RS 232C see Section 9 2 10 Figure 6 15 Pulse Polarity Setup ...

Page 69: ...just the time zone for IRIG B Time Data between your locale and UTC and to turn ON or OFF the IEEE 1344 extension The IEEE 1344 extension controls some additional information contained in the IRIG B time code see Section 7 3 3 RS 232C see Section 9 2 6 Figure 6 16 IRIG B Time Data Setup ...

Page 70: ...d or J4 alternatively use the main RS 232C port for Event A Configure for either event timing up to 200 stored events per channel or one pulse per second 1 PPS deviation including sigma see Section 8 2 3 for details on the principle of deviation measurement RS 232C see Section 9 2 2 Figure 6 17 Event Deviation Mode Setup ...

Page 71: ...ion continually arms itself for the next event until the buffer is full When using the RS 232C port as the input you must arm the event function for each event from the front panel or by using the AR command To arm the Event Input from the front panel see Figure 6 18 below Figure 6 18 Arming the Event Mode From Front Panel ...

Page 72: ...ernal Frequency Reference connect it to J5 on the rear panel Acceptable signals are 100 kHz 1 MHz 5 MHz and 10 MHz To allow for an external clock signal you must first set jumpers correctly See Section 5 2 4 and configure the clock for use with an external reference Set this through the setup menu SET FREQ REFERENCE Figure 6 19 Setting the Frequency Reference From Front Panel ...

Page 73: ...urvey at this time 3 Power On Survey initiate a new survey when the clock is powered on 4 Suspend Survey pause a survey in progress 5 Resume Survey resume a survey that was paused Figure 6 20 Survey Mode Setup 6 10 1 Number of Fixes Auto Survey configuration presents a list of possible surveys from 1 to 86 400 seconds approx 24 hours Surveys are listed as 1 single fix 60 1 minute or more 300 5 min...

Page 74: ...the Fix mode the position information will appear to be changing each second as viewed on the clock display or being returned from the RS 232C port RS 232C see Section 9 2 7 Figure 6 21 Position Hold Mode Setup 6 11 1 Edit Position Data To manually edit geographical position and elevation you must first turn Survey mode to OFF and Position Hold ON Position may then be edited using RS 232 commands ...

Page 75: ...ty Use the Set Option Control menu to configure any Slot A or Slot B option mounted in the clock Some of these options require you to configure additional settings information for configuring specific options is located in the Option List see Appendix C by option number For RS 232C commands see Section 9 2 13 Figure 6 22 Option Control Setup ...

Page 76: ...56 The Setup Menus ...

Page 77: ...etween the clock and the relay Certain protective relays or digital fault recorders may use a different style connector than available at the clock outputs Finally simple questions about which type of cabling coax or a twisted pair is best This section should help to answer these common questions The steps involved in getting your devices synchronized to the Model 1088B are fairly simple and shoul...

Page 78: ...le of supplying 18 mA each at 5 Vdc To determine the maximum number of devices that each digital driver can support you will need to determine the load current or input impedance for each connected device For example if the IED timing input signal e g IRIG B003 requires 1 mA one output channel should be able to support 18 such devices If the load current is more or less then you can connect any nu...

Page 79: ...has become B124 Designation Old New Signal Type Code Components B000 B004 Pulse width code No carrier BCDTOY CF SBS B003 Pulse width code No carrier BCDTOY SBS B120 B124 Sine wave amplitude modulated 1 kHz BCDTOY CF SBS B123 Sine wave amplitude modulated 1 kHz BCDTOY SBS Table 7 2 Available IRIG B Time Codes The IRIG B time code consists of 100 bits produced every second 74 bits of which contain v...

Page 80: ...ed BCDY EAR Leap seconds and leap seconds pending Daylight saving time DST and DST pending Local time offset Time quality Parity Position identifiers To be able to use these extra bits of information protective relays RTU s and other equipment receiving the time code must be able to decode them Consult your equipment manual to determine if the IEEE 1344 feature should be turned ON in the clock To ...

Page 81: ...ode Designations 7 4 Connecting Outputs All clocks come equipped with BNC female connectors however if you are using twisted pair cabling you can use a BNC breakout See the reference below1 or other similar adapter NOTE If using a shielded twisted pair cable like Belden 8760 DO NOT connect the cable shield at the clock Always connect a cable shield at the receiving equipment IED grounding point 7 ...

Page 82: ... one unmodulated IRIG B output make sure that the loads are wired in parallel Some technicians might call this daisy chaining however the idea is to drive all of these loads in parallel from the single output It is much simpler to connect loads to unmodulated IRIG B than for modulated because all of the loads are driven at the same voltage To determine load current for one Unmodulated IRIG B outpu...

Page 83: ...ng the source resistor would be 7 3 V pp available 10 I 557 source I 19 6 wire 1 35 V pp So you can see that most of the drive voltage is lost with 15 mA of current and 500 feet of 22 AWG twisted pair transmission line this includes the voltage losses at the source resistor 1 35 Vpp may very likely not be detected by the decoder in some IED s Remember to make your cable runs as short as possible t...

Page 84: ...and compare it to your required accuracy As an example 840 feet of RG 6 cable with a velocity factor of 83 would delay the timing signal by one microsecond For IRIG B timing applications these delays may not be important compared to other criteria Otherwise you would be forced to compensate for the time delay using another method such as advancing the timing output or placing another master clock ...

Page 85: ...rnal 5 V CMOS signal applied to J4 see Figure 5 1 and Section 5 2 2 Event B may only be applied to J3 and must be a 5 V CMOS signal Data for individual recorded events can be recalled using either the Event Deviation key or via the RS 232C interface see Section 9 2 2 Data for each event will be retained until it is retrieved using one of these two methods Thus if no event data points are retrieved...

Page 86: ...s By normalizing the 16 fractional second values around 0 0000000 the range of results from the deviation computations will be centered on zero 0 4999999 to 0 5000000 seconds Statistical computations are then performed on the 16 values to determine their Mean and Sigma Standard Deviation values which are then displayed on the front panel or output via RS 232 8 2 5 Event Timer Input Channel Configu...

Page 87: ...splay to delete all of the records in the event buffer and to allow recording of new event times starting with event number 001 If the event capture channel is configured for 1 PPS Deviation the readout will display the deviation of the 1 PPS input signal In this case the readout display will have the format A 1 PPS XXXXX XX µS SIGMA XXXXX XX µS Where 1 The top number is the mean average value of ...

Page 88: ...wing steps are required to arm the Event Trapping circuitry from the front panel 1 Press the following keys in order SETUP ENTER SETUP SETUP The display should indicate the following SET A EVENT 2 Press ENTER again and the display should indicate the following ARM A EVENT PRESS ENTER TO ARM 3 Press the ENTER button and the Event Input should be armed When the event occurs on the RS 232C port i e t...

Page 89: ...gned to receive ASCII data through the serial port Another common serial port function is to connect a digital wall display to indicate the time 9 2 Command Set This section provides information for controlling and communicating with these clocks via the RS 232C serial interface All of the RS 232C commands are functionally grouped into similar categories For example Section 9 2 1 lists all of the ...

Page 90: ... programming sequence do not include any carriage return or line feed characters In this section the syntax of each command follows the word Command and is in bold font Please read the comments below each command as some commands include one or more commas and in other cases a comma will separate multiple commands The following symbols and syntax are used C Shorthand for carriage return line feed ...

Page 91: ...e 103 for more information on using large format displays with Arbiter Systems GPS clocks Response 44hhmmssC UTC Local Time 55dddC day of year 11nnC out of lock time bel bel Hex 07 sounds at the end of the time code The number and order of strings returned depend upon options ordered with clock for example see Option 28 in Appendix C Options List page 180 Data is transmitted ahead of time and the ...

Page 92: ...message is sent describing the cleared fault Response ddd hh mm ss I nn nn X nn nnC Updates whenever the status changes Where I Internal clock conditions X External clock conditions nn nn Status byte Hex The 2 digits preceding the colon describe the present condition of the instrument The 2 digits after the colon indicate the parameters which have changed Bit Weight Fault Bit Weight Fault 0 1 OCXO...

Page 93: ...aranteed Underline graphically represents the location of an ASCII space and is used for clarity only Broadcast Mode ASCII plus QUAL Command B6 O6 B6 configures the clock to broadcast from the main RS 232C port the time of day as ASCII data appended with a time quality indicator O6 configures the clock to broadcast the same data from the option RS 232C port ASCII plus QUAL means Standard ASCII plu...

Page 94: ...ce ASCII 32 locked maximum accuracy ASCII 46 Error 1 microsecond ASCII 42 Error 10 microseconds ASCII 35 Error 100 microseconds ASCII 63 Error 100 microseconds Broadcast Mode NMEA183GLL Command 0 nB 0 nB configures the clock to broadcast the National Marine Electronics Association Standard NMEA 0183 to broadcast from the main RS 232C port where n the update rate in sec onds from 1 to 9999 GLL Geog...

Page 95: ...a specific event number 0 to 199 for channel A and nnnB sets the event buffer read index to a specific event number 0 to 199 for channel B It then returns that event information in either Local or UTC time format depending on how the command nTA or nTB is configured Response LCL mm dd yyyy hh mm ss sssssss nnnAL or BL C or UTC mm dd yyyy hh mm ss sssssss nnnAU or BU C Format nnn Event Buffer Read ...

Page 96: ...PS averaged over 16 samples ssss ss the standard deviation sigma of samples Arm Event Trigger Command AR AR arms the RS 232C event capture circuitry Response C Return Single Event Command EA EB EA returns a single event record from the channel A event buffer and EB returns a single event record from the channel B event buffer The record number nnn increments once for every issuance of this command...

Page 97: ...nse L U U xx S nnC Format L Clock currently locked to GPS U for unlocked xx Indicates loss of lock period up to 99 minutes nn User specified out of lock delay 00 to 99 minutes refer to Table A 8 S Off if the out of lock function is deactivated S ZDL indicates zero delay Receiver Status Command SR SR returns the current receiver status Response V vv S ss T t P Off E 0C Format vv number of satellite...

Page 98: ...levation Table 9 2 columns on the left show the significant three bits of the Auto Survey status byte weighting and assignments On the right columns show the significant three bits of the Position Hold status byte weighting and assignments Bit Weight Function Bit Weight Function 0 LSB 1 Single Auto Survey 0 LSB 1 Position Hold Enabled 1 2 Power On Survey 1 2 Position Hold Active 2 4 Suspend Survey...

Page 99: ...tion Bit Weight Function 0 LSB 1 OCXO Not Inst Set to 1 4 16 Out of Lock 1 2 Stabilized fault 0 5 32 Time Error 2 4 Power Supply Error 6 64 VCXO Tune Error 3 8 IRIG B Fault External 7 128 Receiver Failure Table 9 3 System Status Information Chart requires Option 18 Time Quality Command TQ TQ returns a single ASCII character 0 4 9 A B F indicating estimated worst case time quality which follows the...

Page 100: ...e Daylight Saving Summer Time setup you must also use the Set Daylight Saving Auto Start and Stop commands that follow below Response C Set Daylight Saving Summer Auto Start Time Command 2 w x y zDT 2 w x y zDT sets the starting Start date and time for Daylight Saving Summer Time AUTO setting Where w Month 0 through 11 with 0 Jan 1 Feb 11 Dec x WeekOfMonth 0 through 5 with 0 First 1 Second 2 Third...

Page 101: ...rol Panel Command FE FE enables all control panel keys and activates the front panel display Response C Lock Setup Keys Command FL FL disables setup control keys and activates the front panel display Response C Set Backlight OFF Command L0 L0 disables the backlight operation with Option 01 installed Response C Set Backlight ON Command L1 L1 selects the continuous backlight operation with Option 01...

Page 102: ...tion includes the two digit year local offset time quality and notification of pending non sequence events such as leap seconds and daylight saving time changeovers For additional information see Section 7 3 3 Response C IRIG Data Local Command IL IL configures all IRIG time data outputs to local time code reference Response C IRIG Data UTC Command IU IU configures all IRIG time data outputs to UT...

Page 103: ...tes ss sss seconds fractional seconds optional N North S for South Set Position Hold Longitude Command ddd mm ss sssE W ddd mm ss sssE W sets antenna longitude in Position Hold Mode in degrees minutes and sec onds East or West Position Hold must be enabled to set position Response C Format ddd degrees mm minutes ss sss seconds fractional seconds optional E East W for West Return Elevation Command ...

Page 104: ...nds fractional seconds Position Hold OFF Command PH0 PH0 deactivates the Position Hold timing mode The receiver resumes computing time and position solutions approximately each second This is referred to as the Fix mode Response C Position Hold ON Command PH1 PH1 activates the Position Hold timing mode In this mode the receiver position is held fixed and each channel is used to compute a timing so...

Page 105: ...o start the survey See conditions in Table 9 5 Use the SQ command during a survey to obtain the survey status Activate the Position Hold mode with the PH1 command Response C m Condition 0 Survey Off 1 Initiate single auto survey 2 Perform auto survey at power on 3 Temporarily suspend auto survey 4 Resume suspended auto survey n Condition 0 Single Position 1 60 fixes 1 min 2 300 fixes 5 min 3 900 f...

Page 106: ...k an initial estimate of UTC time which it can use with stored position and almanac data to determine which satellites and Doppler shifts to use in acquisition Response C Format yyyy year mm month dd day hh hour mm minute Return Local Date Command DL DL returns the current date in the Local time zone Response ddmmmyyyyC Return UTC Date Command DU DU returns the current date in the UTC time zone Re...

Page 107: ...0 0 10 second 1 00 1 second 100 1 second Seconds Per Pulse Pulse Per Hour Command m nPS m nPS configures the programmable pulse as Seconds per Pulse or Pulse Per Hour mode as follows Response C Format m 0 seconds per pulse mode m 1 pulse per hour mode n 1 60000 seconds if seconds per pulse mode n 1 3599 seconds offset from hour if pulse per hour mode For the Seconds Per Pulse mode the first pulse ...

Page 108: ...ncrements 00 through 99 OU UTC time OL for Local time Set Pulse Output to Slow Code Command nCM nCM configures the pulse output to slow code Slow Code pulse output is held high and goes low for six seconds on the day four seconds on the hour and two seconds on the minute Response C Format n 0 Slow Code off n 1 UTC Slow Code n 2 Local Slow Code Set Pulse Polarity Command nPP nPP sets the programmab...

Page 109: ...of zero up to one millisecond from actual time Response C 9 2 12 Out of Lock Commands Set Out of Lock Time Command nnK nnK configures the amount of delay time in minutes following loss of satellite synchronization before an out of lock signal is generated and output via rear panel connector A negative number turns the out of lock function OFF n 0 sets the out of lock time to zero delay n 1 to 99 s...

Page 110: ...cifies Option 28 l 0 for 60 Hz and l 1 for 50 Hz Response C Option Number n Slot A Option Slot B Option 0 NONE NONE 1 3 4 2 10 17 3 11 17A 4 12 18 5 13 23 6 14 24 7 20A 27 8 23 29 9 25 32 10 28 33 11 34 12 35 Table 9 6 Option Control Settings Note There is no clock configuration or indication for Option 19 Out of Lock Relay Option Control Examples Example 1 Model 1088B Slot A Option 28 0 10 1088 0...

Page 111: ... 168 000 232 64 73 E2 00 00 23C Response NET2 64 73 E2 00 00 24C 9 3 Communication Port Information Table 9 7 gives a list of functions and associated pins for the RS 232C port For the optional RS 232 port see Option 17A in Appendix C Pin No Function Pin No Function 1 Not Connected 6 Not Connected 2 RS 232 Rx Data 7 Not Connected 3 RS 232 Tx Data 8 Aux Input 4 Aux Output 9 Not Connected 5 Ground T...

Page 112: ...92 Serial Communication and Command Set ...

Page 113: ...messages see below The Out of Lock Relay if so equipped will be in the out of lock faulted position Eventually the UNLOCKED LED should extinguish If equipped the out of lock relay should change to the locked non faulted position in sync with the out of lock LED The LCD STATUS should indicate that the clock is Locked and in Position Hold 10 1 1 Clock Time Startup Mode When the clock first starts it...

Page 114: ...rtup In the startup sequence the LCD display should indicate clock status as follows ARBITER SYSTEMS GPS SUBSTATION CLOCK followed by COPYRIGHT C 2006 ARBITER SYSTEMS INC followed by CLOCK STATUS STARTUP followed by CLOCK STATUS UNLOCKED MIN followed by CLOCK STATUS NOT STABILIZED After this the second line of the status display should change to UNLOCKED or LOCKED depending on the previous operati...

Page 115: ...w the feature is configured Successive events appear when repeatedly pressing the EVENT DEVIATION key or if configured for DEVIATION it will indicate the 1 PPS Deviation updates once per second and Sigma If there are no records the second line will indicate NO DATA Event Display Ch A EVENT nnn ddd hh ss sssssss Where nnn event number 001 to 200 ddd day of year of the event 1 to 366 hh hour of the ...

Page 116: ...Installed set to 1 1 2 Stabilized fault 0 2 4 Power Supply Error 3 8 IRIG BUS Fault was Opt 18 4 16 Out of Lock 5 32 Time Error 6 64 VCXO Error out of bounds 7 128 Receiver Failure Table 10 1 Fault Conditions For additional information on internal faults please see Chapter 2 Front and Rear Panels and Chapter 9 Serial Communications and Command Set status commands page 72 10 4 Time Display Modes Af...

Page 117: ...ylight saving correction and local offset NOTE Daylight saving and local offset have no effect on this display 10 4 3 Date and Time Display Local Time The Date and Time Display mode displays the date and time after the daylight saving correction and local offset have been applied but in the same format as that of the Date and Time UTC LOCAL DATE TIME www dd mmm yyyy hh mm ss 10 4 4 Time of Year Di...

Page 118: ... as determined by the last position while locked to at least four satellites Displayed position will be based on the most recent position fix Press the POSITION key to access longitude latitude and elevation data values By repeatedly pressing the POSITION key the display will continuously scroll through these values If pressed prior to acquisition of enough satellites to accurately determine and u...

Page 119: ...ns NOTE Specifications are subject to change without notice A 2 Receiver Characteristics A 2 1 Input Signal GPS L1 C A code 1575 42 MHz A 2 2 Timing Accuracy GPS UTC time 50 ns rms at 1 PPS output when receiving 4 or more satellites one satellite if position is known within 25 meters in the presence of Selective Availability SA 40 ns typical in Position Hold mode A 2 3 Internal Oscillator Stabilit...

Page 120: ...r a specific input function as listed or any function listed in additional outputs as listed in the option list in Appendix C Signals on standard outputs four BNC user configurable Option 03 adds four additional configurable outputs Option 27 adds eight high drive IRIG B outputs Option 29 adds four additional configurable outputs with 75 mA per channel A 3 2 Standard Output Signals IRIG B 1 kHz mo...

Page 121: ...e seconds and fractional seconds 4 Single Trigger output transitions at the specified day hour minute second and fraction second and remains at that voltage 5 Slow Code UTC LCL transitions for 6 seconds on the day four seconds on the hour and two seconds on the minute 6 Pulse Polarity positive and negative positive held low and transitions high or negative held high and transitions low A 3 6 Synch...

Page 122: ...Option Control Out of Lock Indication Event Deviation Backlight Frequency Reference Table A 1 Setup Functions Listed A 5 3 Display 2 line by 20 character supertwist LCD Backlight available Option 01 A 5 4 Display Functions Time UTC or Local 1PPS input Deviation Position Latitude Longitude and Elevation Event Time Status Clock GPS Receiver Configuration A 5 5 Annunciators Operate Green On line Gree...

Page 123: ... CRLF 55ddd CRLF BEL Broadcast Mode Vorne mm dd yyyy hh mm ss sssssss nnn CRLF Broadcast Mode Event ddd hh mm ss I nn nn X nn nn CRLF Broadcast Mode Status CRLF Q yy ddd hh mm ss 000 space Broadcast Mode Extended ASCII SOH ddd hh mm ssQ CRLF Broadcast Mode ASCII w Time Quality SOH yyyy ddd hh mm ssQ CRLF Broadcast ASCII year w Time Quality For more information refer to RS 232 Broadcast Commands co...

Page 124: ...lity 110 170 Vdc Option 15B 110 300 Vdc 20 VA or 85 264 Vac 47 440 Hz with three position Terminal Power Strip and Surge Withstand Capability 110 300 A 7 4 Power Connector Standard Power Supply This includes a fused IEC 320 power inlet module with mating ac cord Plug type specified as Options P1 through P10 see Section 3 2 1 Options 07 08 15A and 15B Using a 3 pole terminal strip power inlet and 1...

Page 125: ...her F connector to the GPS receiver in the clock A screw terminal provides a point to connect an earth ground wire Being weatherproof the AS0094500 can be mounted outdoors provided that the cabling and Type F connectors are sealed from the weather The device will also pass the DC current necessary to energize the GPS antenna B 3 Installation B 3 1 Mounting Location Location is a key consideration ...

Page 126: ...ing features Typically this includes an o ring in the male connector that seats against the face of the female connector on the surge arrester Also crimped connectors frequently include a silicone gel flooding compound which enhances the ability of the connection to withstand the rain and humid conditions To better seal the entire connection cover the joint with GE Silicone II compound Use the pro...

Page 127: ...B 4 Physical Dimensions 107 Figure B 1 Suggested Mounting of the AS0094500 Surge Arrester ...

Page 128: ...108 Using Surge Arresters ...

Page 129: ...ferences to these models will be found throughout this document Additionally there will be references to certain capabilities and specifications that apply only to specific clock models when using these options For example with Option 03 there will be a large list of possible signals that can be selected with the option board jumpers Some of these signals may not apply to the other clock models th...

Page 130: ...operating mode To set the backlight operating mode observe the following steps 1 With the clock power turned on press the SETUP key The display should change to read SET RS 232 2 Press the SETUP key repeatedly until the display reads SET BACK LIGHT Press the ENTER key to select the backlight sub menu The current backlight operating mode will be displayed from one of the following selections OFF Ba...

Page 131: ...ta during power outages or when the clock is turned off The GPS backup battery supports the following functions and parameters Function Ephemeris Data Description Information pertaining to satellite position or projected position as a function of time Storing the above information will reduce the time needed to re acquire satellite lock when the unit is turned on or upon restoration of power after...

Page 132: ...ors BNC type RF connectors 4 Analog Outputs Output Type Operational amplifier LF353 output with 557 ohm series resistor Available Outputs Note All outputs available IRIG B Modulated IRIG format B time code modulated onto 1 kHz 10 Vpp sine wave carrier Deviation 1088A B 5 volts analog corresponding to 1 PPS deviation channel A or B see individual clock Operation Manual The pro portion is 1 V per 10...

Page 133: ...a preprogrammed time or a continuous pulse train having a period of one day or less Pulse width is ad justable from 0 01 to 600 seconds Out of Lock Normally HI after acquisition of satellite signals Toggles LO nn minutes after loss of satellite signal lock Range for nn is 00 to 99 minutes and is set using the SETUP menu or RS 232C refer to clock Operation Manual Setting of 00 disables this functio...

Page 134: ...o Output Function selections 3 through 22 The signals available are listed in the text to the left of the jumpers in Figure 1 Mode Selection In addition to specifying the output signal type for each individual connector it is necessary to define whether the signal is analog or digital This is accomplished using jumpers JMP11 JMP12 JMP14 and JMP15 Each of these jumpers corresponds to the output fun...

Page 135: ...ion 2 C IRIG B 3 A IRIG E 4 A IRIG H 5 A 10 MPPS 6 A 5 MPPS 7 A 1 MPPS 8 A 100 kPPS 9 A 10 kPPS 10 A 1 kPPS 11 A 100 PPS 12 A 60 PPS 13 A 50 PPS 14 A 10 PPS 15 A IRIG D 1 PPM 16 A 1 PPM 17 A 1 PPS 18 A Programmable Pulse 19 A Out of Lock 20 A IRIG B Mod Manch 21 A No Connection 22 A Table C 1 Option 03 Output Connector Jumper Settings ...

Page 136: ...us to the rising edge of 1 PPS GPS Four pins of the output connector that can be configured with combinations of the following Up to four digital signal outputs the functions of which can be selected individually from 18 choices Up to two analog signal outputs the functions of which can be selected individually from two choices Note Since these auxiliary functions must share four connector pins ce...

Page 137: ...C 5 Option 04 Parallel BCD Output 117 C 5 2 Option 04 Firmware Setup Figure C 2 Option 04 Firmware Setup ...

Page 138: ...XXX 0 to 5 volts Time Data Format UTC or Local time data corresponds to setting for IRIG time data see Chapter 5 in this manual Time Accuracy Rising edge delay of 100 nS maximum 1 mS bit relative to 1 PPS output rising edge Analog Outputs Output Type Operational amplifier LF353 output with 562 ohm series resistor Pin Numbers Output 1 pin 22 Output 2 pin 47 IRIG B Modulated IRIG format B time code ...

Page 139: ...are wave synchronous to the 1 PPS output 1 kPPS 1 000 PPS square wave synchronous to the 1 PPS output 100 PPS 100 PPS square wave synchronous to the 1 PPS output 60 PPS 60 PPS square wave synchronous to the 1 PPS output 50 PPS 50 PPS square wave synchronous to the 1 PPS output 10 PPS 10 PPS square wave synchronous to the 1 PPS output 1 PPS 1 PPS 10 mS high synchronous to 1 PPS GPS 1 PPnnnS 1 pulse...

Page 140: ...n Data Bit 22 16 1 Min Data Bit 20 17 20 Sec Data Bit 17 18 8 Sec Data Bit 15 19 2 Sec Data Bit 13 20 800 mS Data Bit 11 21 200 mS Data Bit 9 22 80 mS Data Bit 7 23 20 mS Data Bit 5 24 8 mS Data Bit 3 25 2 mS Data Bit 1 26 Ground Ground 27 1 kPPS output Data Bit 46 28 Output 3 Dig only Data Bit 44 29 Output 1 Dig An Data Bit 19 30 Day 100 Data Bit 34 31 Day 40 Data Bit 42 32 Day 10 Data Bit 40 33 ...

Page 141: ...ec Data Bit 14 44 1 Sec Data Bit 12 45 400 mS Data Bit 10 46 100 mS Data Bit 8 47 40 mS Data Bit 6 48 10 mS Data Bit 4 49 4 mS Data Bit 2 50 1 mS Data Bit 0 These pins can be configured for any of the listed functions regardless of the main mode of operation for Option 04 Figure C 3 Option 04 Output Connector ...

Page 142: ...ed for BCD output of time data Option 04 utilizes pins 1 through 21 and 26 through 46 along with ground pins 25 and 50 The weighting for the individual bits along with the connector pin locations is given in Table 1 To configure Option 04 for BCD operation observe the following steps a Set jumper JMP1 to position B This enables the BCD output mode b Set jumper JMP6 to position A This jumper is inc...

Page 143: ...is enables the digital signal output mode At the same time making this jumper selection eliminates parallel data bits 19 27 44 and 45 b To enable digital signal output number 1 set jumper JMP2 to position A c To set the type of output signal for digital signal output number 1 make the appropriate selection on jumper JMP8 refer to Figure 2 Note that positions 1 and 2 correspond to analog signal out...

Page 144: ...place it on jumper strip JMP8 in either position 1 or 2 refer to Figure 2 3 To enable analog signal output number 2 set jumper JMP5 to position B This setting also eliminates the possibility of having parallel data bit 45 digital signal output number 4 4 To select the type of signal for analog output 2 remove the jumper from jumper strip JMP10 which is no longer active since it corresponds to digi...

Page 145: ...C 5 Option 04 Parallel BCD Output 125 Figure C 4 Option 04 Output Jumper Settings ...

Page 146: ...126 Options List Figure C 5 Option 04 Board Layout and Jumper Locations ...

Page 147: ...or 110 to 370 Vdc less than 20 Volt Amps maximum This feature is intended for use in installations where it is necessary or desirable to have the instrument power hard wired See also pages 9 and 14 for additional detail Figure C 6 Option 07 Power Supply Inlet Connector C 6 2 Specifications Fuse Type Bussman GBD 1A Current Rating 1 Ampere fast acting Voltage Rating 250 Volts Size 5mm x 20mm Input P...

Page 148: ...strument power hard wired Figure C 7 Option 08 Power Supply Termi nal Strip Connector C 7 2 Specifications Input Power DC Voltage 10 to 60 Vdc Inlet Power 20 Watts typical Terminal Strip Terminal Assignment Ground Left to right viewed from rear Block Size 49 mm W x 15mm H x 16 5 mm D 1 9 x 0 6 x 0 6 Block Material Glass filled thermoplastic Screw Size 6 32 x 1 4 Screw Material Cadmium plated steel...

Page 149: ...C 8 Options 10 Battery Backup Obsolete 129 C 8 Options 10 Battery Backup Obsolete C 9 Option 11 Four Additional Outputs and Battery Backup Obsolete ...

Page 150: ...in the B option slot of the unit Press ENTER again This completes the firmware configuration for Option 12 More information about instrument firmware configuration with the SETUP menus is found in section 5 of the Model 1088A B Operation Manual C 10 4 Main Board Setup via Internal Jumpers Hardware and firmware configuration of the Model 1088A B is performed at the factory when this option is order...

Page 151: ...are wave synchronous to the 1 PPS output 50 PPS 50 PPS square wave synchronous to the 1 PPS output 10 PPS 10 PPS square wave synchronous to the 1 PPS output IRIG D 1 PPM IRIG format D time code 1 pulse per minute rising edge on time 1 PPH 1 pulse per hour rising edge on time 1 PPS 1 PPS 10 ms high synchronous to 1 PPS GPS Programmable Outputs a single pulse at a preprogrammed time or a continuous ...

Page 152: ...e of output signal desired The signals available are listed in the text to the left of the jumpers in Figure C 8 Mode Selection In addition to specifying the output signal type for each individual connector it is necessary to define whether the signal is analog or digital This is accomplished using jumpers JMP11 JMP12 JMP14 and JMP15 Each of these jumpers corresponds to the output function jumper ...

Page 153: ... the Option 12 oscillator to drive the clock The setting for Jumper 2 should be changed to B External Reference and the setting for Jumper 3 should be changed to B 5 MHz When these settings have been completed reinstall the instrument cover and reapply power Figure C 8 Option 12 Output Signal Jumper Locations Note See also Table 5 2 for a list of jumpers ...

Page 154: ...s Terminal Block Terminal Assignment Ground left to right viewed from rear Block Size 15mm W x 18mm H x 30mm D 5 8 x 0 75 x 1 3 16 Approvals U L recognized C S A approved Fuse Type Bussman GDC 1A Current Rating 1 Ampere fast acting Voltage Rating 250 Volts Size 5mm x 20mm Surge Withstand Protection SWC Provides input Surge Withstand Capability SWC in compliance with both ANSI C37 90 and IEC 801 4 ...

Page 155: ...llowing a Up to four digital signal outputs the functions of which can be selected individually from 18 choices b Up to two analog signal outputs the functions of which can be selected individually from two choices c An RS 232C serial communications port which can use between two and four lines Note Since these auxiliary functions must share four connector pins certain limitations will apply when ...

Page 156: ... Options List C 12 2 Option 17 Firmware Setup Procedure Figure C 9 Option 17 Firmware Setup Note For additional programming information on other options please see Chapter 6 or other options in Appendix C ...

Page 157: ...gh Speed CMOS buffered 74HCXXX 0 to 5 volts Time Data Format UTC or Local time data corresponds to setting for IRIG time data see Chapters 5 and 6 Time Accuracy Rising edge delay of 100 nS maximum 1 mS bit relative to 1 PPS output rising edge Analog Outputs Output Type Operational amplifier LF353 output with 562 ohm series resistor Pin Numbers Output 1 pin 22 Output 2 pin 47 IRIG B Modulated IRIG ...

Page 158: ...ynchronous to the 1 PPS output 1 kPPS 1 000 PPS square wave synchronous to the 1 PPS output 100 PPS 100 PPS square wave synchronous to the 1 PPS output 60 PPS 60 PPS square wave synchronous to the 1 PPS output 50 PPS 50 PPS square wave synchronous to the 1 PPS output 10 PPS 10 PPS square wave synchronous to the 1 PPS output 1 PPS 1 PPS 10 mS high synchronous to 1 PPS GPS 1 PPnnnS 1 pulse per nnn s...

Page 159: ...mote device is ready to receive data Requires that JMP5 be set to position C Precludes the use of digital signal output 4 analog signal output 2 or parallel data bit 45 Outputs Available Transmit Data TXD Connector pin 29 Sends data to external device Requires that JMP2 be set to position B Precludes the use of digital signal output 1 or parallel data bit 19 Data Set Ready DSR Connector pin 28 Inf...

Page 160: ...13 40 Min Data Bit 26 14 10 Min Data Bit 24 15 4 Min Data Bit 22 16 1 Min Data Bit 20 17 20 Sec Data Bit 17 18 8 Sec Data Bit 15 19 2 Sec Data Bit 13 20 800 mS Data Bit 11 21 200 mS Data Bit 9 22 80 mS Data Bit 7 23 20 mS Data Bit 5 24 8 mS Data Bit 3 25 2 mS Data Bit 1 26 Ground Ground Ground 27 1 kPPS output Data Bit 46 28 Output 3 Dig only Data Bit 44 DSR 29 Output 1 Dig An Data Bit 19 TXD 30 D...

Page 161: ...c Data Bit 12 45 400 mS Data Bit 10 46 100 mS Data Bit 8 47 40 mS Data Bit 6 48 10 mS Data Bit 4 49 4 mS Data Bit 2 50 1 mS Data Bit 0 Table C 4 Option 17 Connector Pin Designation These pins can be configured for any of the listed functions regardless of the main mode of operation for Option 17 Figure C 10 Option 17 Output Connector ...

Page 162: ...data Option 17 utilizes pins 1 through 21 and 26 through 46 along with ground pins 25 and 50 The weighting for the individual bits along with the connector pin locations is given in Table 1 To configure Option 17 for BCD operation observe the following steps a Set jumper JMP1 to position B This enables the BCD output mode b Set jumper JMP6 to position A This jumper is included to set the timing mo...

Page 163: ...A This enables the digital signal output mode At the same time making this jumper selection eliminates parallel data bits 19 27 44 and 45 b To enable digital signal output number 1 set jumper JMP2 to position A This also eliminates the TXD RS 232C line c To set the type of output signal for digital signal output number 1 make the appropriate selection on jumper JMP8 refer to Figure 2 Note that pos...

Page 164: ...place it on jumper strip JMP8 in either position 1 or 2 refer to Figure 2 To enable analog signal output number 2 set jumper JMP5 to position B This setting also eliminates the possibility of having parallel data bit 45 digital signal output number 4 To select the type of signal for analog output 2 remove the jumper from jumper strip JMP10 which is no longer active since it corresponds to digital ...

Page 165: ...C 12 Option 17 Parallel BCD Output and Second RS 232 Port 145 Figure C 11 Option 17 Output Jumper Settings ...

Page 166: ...146 Options List Figure C 12 Option 17 Board Layout and Jumper Locations ...

Page 167: ...S 232 Pinout Pin 1 No Connection Pin 2 Receive Data input RXD Pin 3 Transmit Data output TXD Pin 4 RS 232 Aux Output Pin 5 Signal Common Pin 6 RS 232 Aux Input Pin 7 RS 232 Aux Output Pin 8 RS 232 Aux Input Pin 9 No Connection Table C 5 Option 17 RS 232 Port Pins These pins may be programmed at customer request for example for modem or printer control In the standard unit they have no function C 1...

Page 168: ...ions List C 13 6 Option 17A Firmware Setup Option 17A is physically located in Option Slot B Check Section 6 12 on page 55 and the flowchart below for setup information Figure C 13 Option 17 RS 232 Port Setup ...

Page 169: ...ption 17A circuit board over the four mounting studs with the 9 pin connector protruding through the rear panel opening 8 Secure the option board and the cover plate in place using the two screws removed in step 4 and the two screws included with Option 17A 9 Install the interconnect cable between J9 on the Model 1088B main circuit board and J1 on the Option 17A circuit board The connectors on the...

Page 170: ...T B OPTION 17A 5 Pressing the ENTER key confirms the selection of Option 17A and enables a series of sub menus for configuration of communications parameters When all of the parameters have been set the display returns to the top level of the Setup Menu Pressing any of the top row function keys returns the instrument to normal operation ...

Page 171: ...cast time output to connect to a second computer or as a redundant clock interface allowing two Model 1088B clocks to be interconnected to form a redundant timing system C 14 2 Specifications IRIG B Distribution Bus Output Connector Pluggable terminal strip 5mm centers Loads 24 minimum with Model 10882A load taps Bus Length Limited by bus configuration will drive 500m 1500 of AWG18 twisted pair ca...

Page 172: ...ch continually checks for two condi tions the presence of an IRIG signal at the bus output terminals and dc electrical continuity in the distribution bus cable Any fault in the clock mainframe or Option 18 board which results in loss of IRIG drive any bus short within approximately one kilometer of the clock or more depending on bus configuration and loading and any electrical open circuit a cut c...

Page 173: ...system can be built using rings branches and linear segments in various combinations as needed to satisfy your requirements Determining Actual Signal Output Levels The actual signal levels at the outputs of the various taps may be approximated with acceptable accuracy by treating the network as a resistive array The source impedance of the Option 18 bus output is approximately 21 ohms The recommen...

Page 174: ... load exceeds 50 ohms such a fault must be the result of a short circuit at some point along the bus Thus the bus monitor function of the Option 18 IRIG B distribution output is capable of detecting the three most likely types of system fault failure of the IRIG B drive signal at the source an open circuit along the distribution bus or a short of the distribution bus Installation Installation of t...

Page 175: ...C 14 Option 18 IRIG B BUS Distribution Fault Monitor and 2nd RS 232 Port 155 C 14 4 Option 18 Firmware Setup Figure C 14 Option 18 Firmware Setup ...

Page 176: ...156 Options List C 14 5 Typical Network Configuration Figure C 15 Option 18 Network Configuration ...

Page 177: ...nt Timing Operation In redundant clock mode two Model 1088B clocks each with Option 18 are interconnected with the Arbiter Systems part number CA0017200 cable assembly This cable installs between the two 9 pin D subminiature connectors on the Option 18 assemblies of the two units Either end of the cable may go to either clock neither unit has higher or lower priority than the other ...

Page 178: ...second the clocks exchange status information via the RS 232 interface In the event that one of the clocks determines that it is not as healthy as the other it will automatically relinquish on line status to the other unit For the most part this is performed in firmware however there is also a hardware input to the redundant control circuit which is driven by the microprocessor watchdog reset gene...

Page 179: ...ut The pinout of the RS 232 connector is as follows Pin 1 Redundant Control Interface Disable Input2 Pin 2 TXD Transmit Data output Pin 3 RXD Receive Data input Pin 4 RS 232 Aux Output1 Pin 5 Signal Common Pin 6 RS 232 Aux Input2 Pin 7 RS 232 Aux Output2 Pin 8 RS 232 Aux Input2 Pin 9 Redundant Control Interface Disable Output2 1 These pins may be programmed at customer request for example for mode...

Page 180: ...2 Pin 3 Fault Relay Common Contact Pin 4 Unlocked Relay Normally Closed Contact1 Pin 5 Unlocked Relay Normally Open Contact2 Pin 6 Unlocked Relay Common Comtact Pin 7 IRIG Bus Positive Polarity Output Pin 8 IRIG Bus Common Chassis Ground Pin 9 IRIG Bus Negative Polarity Output 1 The normally closed contact is connected to Common when power is off and when the relay is in the fault or unlocked stat...

Page 181: ...f Lock signal from the rear panel if so configured Normally open normally closed and common connections are available at screw terminals on the rear panel Normally means the clock is operating without fault Figure C 17 Option 19 External Wired Fault Relay C 15 2 Specifications C 15 3 Relay Contacts Type Dry gold clad silver Contact Resistance 60 milliohms UL CSA Ratings 1 A 30 Vdc 0 5 A 125 Vac 0 ...

Page 182: ...igured using the SETUP menu for the 1088B which is described in Section 5 of the 1088B Operation Manual The SETUP menu allows entry of a value between 00 and 99 for Out of Lock Delay Time The delay time value represents the amount of time in minutes that satellite synchronization must be continuously lost before the instrument outputs an Out of Lock signal and simultaneously activates the Out of L...

Page 183: ...acitor This could damage or degrade the contacts of the relay This problem may be alleviated by adding a 100 ohm 0 5 watt resistor in series with the relay thereby limiting the charging current to the capacitor see below Figure C 20 Option 19 Relay Circuit with Resistor This resistor is not normally installed at the factory due to the range of different applications in which Option 19 may be used ...

Page 184: ...s shown on the circuit board as R1 Directly below this lettering on the board is a via a plated through hole connecting the two board layers Using a number 60 040 or larger drill bit carefully enlarge the via to remove the plating which will break the connection between the two layers CAUTION The via is the middle of three holes be careful not to drill out either of the two outside holes 7 Install...

Page 185: ... is used at the factory for setting the output enable for the optical transmitters For normal operation set jumper to position A With two clocks containing Option 18 and configured for redundant operation this jumper may be set to position B allowing the optical outputs to be externally paralleled and driven by the on line clock Normally this jumper will be configured as required when delivered fr...

Page 186: ...PS 2 3 7 100 kPPS 2 3 8 10 kPPS 2 3 9 1 kPPS 2 3 10 100 PPS 2 3 11 60 PPS 2 12 50 PPS 2 13 10 PPS 2 3 14 1 PPM 2 3 15 1 PPH 2 3 16 1 PPS 1 2 3 17 Prog Pulse 1 2 3 18 IRIG B Mod Manch 2 3 Table C 6 Option 20A Four Fiber Optic Output Configuration 1 Signals available on the Model 1093A B C 2 Signals available on the Model 1088A B 3 Signals available on the Model 1084A B C ...

Page 187: ...C 16 Option 20A Four Fiber Optic Outputs 167 Figure C 22 Option 20A Jumper Locations ...

Page 188: ...o 1PPS GPS by phase locking a precision voltage controlled crystal oscillator VCXO to the internal 1kPPS signal present in the clock This VCXO output signal is then divided down to obtain the desired sampling rate Synchronization logic is also provided to ensure that the output divider is synchronized to 1PPS GPS By using a precision VCXO pulse to pulse sampling jitter is held to an absolute minim...

Page 189: ...720 600 8 480 400 6 360 300 4 240 200 Table C 7 Option 23 Sample Rates fLCM 384 fbase Samples cycle fs for 60 Hz fs for 50 Hz 3200 192000 160000 1600 96000 80000 800 48000 40000 640 38400 32000 400 24000 20000 320 19200 16000 200 12000 10000 160 9600 8000 128 7680 6400 100 6000 5000 80 4800 4000 64 3840 3200 50 3000 2500 40 2400 2000 32 1920 1600 20 1200 1000 16 960 800 10 600 500 8 480 400 4 240 ...

Page 190: ...nternal operating firmware parameters within both the Model 1084A B C and Model 1088A B The SETUP menu can be easily accessed from the front panel keyboard Figure C 23 illustrates the Option 23 SETUP menu for the standard Model 1088A B SETUP menu However for clarity only Option 23 is described RS 232C Commands Option 23 can also be configured via the RS 232C interface using one of the following co...

Page 191: ...on the Model 1088B If you should need additional information on setting up from the front panel keys please go to Chapter 9 on page 69 To enter the Slot B setup menu press SETUP until you reach SET OPTION CONTROL then press ENTER Press the UP DOWN keys to select the desired option number and ENTER key to confirm the selection Figure C 23 Option 23 Front Panel Setup ...

Page 192: ...ription Output Function Selection Jumpers JMP1 JMP2 JMP3 and JMP4 determine the output signals which can be made available at I O connectors J2 J3 J4 and J5 respectively Figure C 24 illustrates the relationship between these jumpers and the I O connectors The first step in setting an I O channel for a specific output signal is to move the associated jumper to the location corresponding to the desi...

Page 193: ... H 5 A 10 MPPS 6 A 5 MPPS 7 A 1 MPPS 8 A 100 kPPS 9 A 10 kPPS 10 A 1 kPPS 11 A 100 PPS 12 A 60 PPS 13 A 50 PPS 14 A 10 PPS 15 A IRIG D 1 PPM 16 A 1 PPH 17 A 1 PPS 18 A Programmable Pulse 19 A Out of Lock 20 A IRIG B Modified Manchester 21 A Normal Polarity COMTRADE 22 A Complemented Polarity COMTRADE 23 A Table C 9 Option 23 Output Signal Selection Jumper Settings ...

Page 194: ...174 Options List Figure C 24 Option 23 Internal Jumper Setup ...

Page 195: ...lated 4 5 Vpp with 20 Ohm source impedance each channel will drive a 50 Ohm load to 3 Vpp minimum Unmodulated 5 V open circuit 4 V minimum at 250 mA load load current each channel will drive 25 Schweitzer SEL 3xx in parallel or 50 SEL 2xx in series parallel relays at 10 mA per relay Maximum Load per driver Modulated No Limit will drive a short circuit Unmodulated 250 mA peak current pulse by pulse...

Page 196: ...176 Options List Figure C 25 Option 27 Jumper Locations ...

Page 197: ...loop distance figures were obtained using the following types of Belden Wire cross referenced to corresponding part number AWG20 AWG18 AWG16 AWG14 AWG12 Shielded 8762 8760 8719 8720 8718 Non Shielded 8205 8461 8471 8473 8477 Table C 10 Example Output Load and Loop Distance Matrix 1 Output Load and Voltage Drop SEL 3xx is the number of relays connected as output load 2 For SEL 2xx using pairs of re...

Page 198: ...e 1 Shielding is optional However if shielding is used connect drain wire at source end of cable to a local surge ground Maintain shielding throughout bus by connecting drain wires together at each junction or drop point Do not connect drain wires at ends of cables Do not connect drain wires to signal wires Do not connect shield to ground at more than one location as this may result in circulating...

Page 199: ...he connecting lines are short 5 ohms or less loop resistance then no further analysis is required As with unmodulated signals two or more drivers may be paralleled if desired Unlike the current limited unmodulated IRIG B drivers the modulated IRIG B drivers are impedance limited and will operate properly into any load impedance including a short circuit If the loop resistance is greater than 5 ohm...

Page 200: ...m 20 ft length of twinaxial cable provided Strip the unterminated end of this cable and prepare it as required for termination to your System Reference signal Do not connect the shield of the cable at the reference input end 2 Attach this cable to the Option 28 System Reference input Hold the cable connector by its body not by the rotating locking ring and rotate it inside the twin BNC connector u...

Page 201: ... DISPLAY OPT 28 ONLY UP YES DOWN NO 5 To view Option 28 only press the UP key then press the front panel key EVENT DEVIA TION to display Option 28 measurement information 6 To enable Event Deviation A and B displays as well press the DOWN key and config ure the Channel Mode Time and Recorder Channel Then press the front panel key EVENT DEVIATION to sequentially display all three channels For a det...

Page 202: ...s the clock model number a security key to prevent unintentional modification 0 16 1088PC C 19 7 Amplitude Calibration For amplitude calibration the format is similar replacing PC with RV The calibration factor supplied with boards having a serial number with prefix greater than 97420 is approximately 1 0 and is multiplied by the measured result to generate the displayed value If an accurate ac so...

Page 203: ...C 19 Option 28 Time Frequency and Phase Monitor 183 C 19 8 Option 28 Firmware Setup Procedure Figure C 26 Option 28 Firmware Setup Procedure ...

Page 204: ...cations Phase angle in all messages is defined as zero or 360 for the positive going zero crossing coincident with 1PPS GPS and is scaled between zero and 360 degrees Phase angle increases with frequency below nominal 50 or 60 Hz and decreases with frequency above nominal in other words if the zero crossing occurs just after 1PPS GPS the phase angle will be just above zero and if the zero crossing...

Page 205: ...ommand FD FD returns the system frequency deviation Response SS f fffC Where SS UTC seconds f fff frequency Return System Phase Command PS PS returns the system phase Response SS ppp ppC Where SS UTC seconds ppp pp phase 0 to 360 degrees Return System Time Deviation Command TD TD returns the system time deviation Response SS tt ttttC Where SS UTC seconds tt tttt time deviation Return System Time C...

Page 206: ...em OK 1 No System Reference 2 System okay now but reference lost since last request Start Broadcast Mode Vorne Command B2 B2 configures RS 232 broadcast mode to support Vorne large format time displays Data is transmitted ahead of time and the BEL character is transmitted on time When properly configured the Vorne display updates simultaneously upon receipt of the first bit of the BEL character Re...

Page 207: ...or the 33 s ss format will be 9 bb when the measured value exceeds 9 99 b blank It will be 9 bb when the measured value is less than 9 99 Output for the 34 sss sss format will observe the following conventions for out of range values and leading blanks Decimal points are implicit and do not appear in the data stream Time Deviation Range Format b blank Below 999 99 bbb bbb 999 99 to 100 00 sss sss ...

Page 208: ...vvC Where mm dd yyyy Date hh mm ssU Time of Day UTC or hh mm ssL Time of Day Local ss Status first character is Reference Status 0 Locked 1 Unlocked second character is clock status per IEEE 1344 f fff signed Frequency Error in Hz t tttt signed Time Deviation in seconds ppp pp Phase Angle 0 to 360 degrees vvv vv Line voltage rms Volts Set Measured System Deviation Command s fsRD s fsRD sets the sy...

Page 209: ...Frequency and Phase Deviation with a UTC time reference at each issuance of the command Response when n 0 mm dd yyyy hh mm ssU ss f fff t tttt ppp pp vvv vvC when n 1 mm dd yyyy hh mm ssL ss f fff t tttt ppp pp vvv vvC Where mm dd yyyy Date hh mm ssU Time of Day UTC or hh mm ssL Time of Day Local ss Status 0 Locked 1 Unlocked first character is Reference Status second character is clock status per...

Page 210: ...g connectors provided The connec tors accept wire sizes of 0 25 to 2 5 mm2 AWG 12 to 22 See Table C 13 and Figure C 28 for Connector Configuration Digital Outputs Quantity 4 Type 5V CMOS individually configurable Rating 5V open circuit nominal 75mA peak current per channel 3 5V typical at 75mA peak current Available Signals Jumper selectable to any of the digital signals available from the clock m...

Page 211: ...unded load 4 25 50 VDC with contact closure to ground for non grounded load See Table C 12 Operating Modes of SSR Outputs Mode SSR Output 1 SSR Output 2 Dry Contact Closure Connect load to pins 10 11 polarity not important Connect load to pins 14 15 polarity not important Contact Closure to Ground Short pins 9 10 connect load to pin 11 Short pins 13 14 connect load to pin 15 25 50 VDC Switched to ...

Page 212: ...Output 2 JMP6 Signal Select Default 1 PPM 15 SSR Output 2 JMP8 Standard 50 ms Default 50 ms 16 Leftmost 25 50VDC 2 JMP11 25 50 VDC Default 50 VDC Table C 13 Option 29 Output Connectors and Setup Jumpers C 20 3 Firmware Configuration 1 It is necessary to verify the configuration in the Option Setup Menu so Option 29 is recognized 2 Apply power and observe the front panel display when it displays CL...

Page 213: ...ear panel 2 Remove rack mount ears if equipped and remove top cover using a T25 Torx driver 4 screws 3 Locate the appropriate Jumper using Figure C 27 and move the jumper to the desired setting 4 Replace the top cover and rack mount ears if equipped 5 Connect the power cord to the rear panel and set the Line Power switch to ON position if equipped Figure C 27 Option 29 Jumper Locations ...

Page 214: ...194 Options List Figure C 28 Option 29 Connector Signal Locations ...

Page 215: ... is not used the controller can typically be used for hundreds of clients without overloading it Au thentication requires typically 40 ms for checking and generating the cryptograms which is covered and averaged out by the protocol Option 32 33 supports full SNTP and all NTP functions required for reliable server operation Functions not required for server operation are not implemented Hardware Co...

Page 216: ...wered on After the initial self test phase where all status LEDs should be lit the LED s indicate the status of the NTP Server Link LED Link green LED on Ethernet 10 100 base T connection is good Synch LED Synch green LED on synchronized to the time signal correct reception of time data requires the satellite controlled clock to be synchronized Synch LED flashing 50 duty cycle Some information rec...

Page 217: ...by Model 1088B same B Det by Model 1084A B C or 1093A B C same JMP2 A NTP Server s same B Clock serial port same C Configure NTP Server 1 via RS 232 only same D Configure NTP Server 2 via RS 232 only same JMP3 A NTP Server s same B Clock serial port same C Configure NTP Server 1 via RS 232 only same D Configure NTP Server 2 via RS 232 only same JMP4 A NTP Server s NTP Configuration B NTP Configura...

Page 218: ... address of 192 168 0 232 To configure the NTP module over the network establish a Telnet connection to port 9999 If the IP address of the NTP Server NTS is unknown or undefined the following sets a temporary IP address a Set a static ARP with the desired IP address using the hardware address of the NTS which is printed on the product label Alternately you can calculate the address from the serial...

Page 219: ... gateway set Security SNMP is enabled SNTP Community Name public Telnet Setup is enabled TFTP Download is enabled Port 77FEh is enabled ECHO is enabled NTS parameters Antenna Type GPS Arbiter SNTP Ref Identifier gps2 Encryption is disabled Sending UDP datagram to Port 024C hex every 000 minutes Send UDP datagram to Change Setup 0 Basic configuration 1 NTS configuration 6 Security 7 Factory default...

Page 220: ...en as the network section and how many bits are to be taken as the host section reminder Standard class A 8 24 net host class B 16 16 class C 24 8 bits If set to 0 the standard appropriate net mask for the actual IP address is used The NTS prompts for the number of host bits and then calculates the net mask It is shown in standard format 255 255 xxx xxx when parameters are displayed Telnet Config ...

Page 221: ...ion is enabled up to seven MD5 or DES keys can be entered key numbers 1 7 All key input must be done in hexadecimal format MD5 key length is limited to eight characters When leaving the setup mode after selecting function 9 all parameters are stored in a nonvolatile memory and the NTP server resets Select 8 to exit without saving modifications ...

Page 222: ...rting authentication via DES and MD5 cryptographic checksums as defined in RFC 59052 The Option 34 supports symmetric key authentication Time is distributed over the network interface to computers controllers and other equipment with accurate time The Option 34 allows a secure connection to configure using either the preferred HTTPS Web Interface or using the SSH Console Precision Time Protocol PT...

Page 223: ...s are disconnected while clock is operating and service stops power cycle the clock Default Port Addresses By default the Option 34 comes configured as follows Port 1 IP address STATIC 192 168 0 232 Netmask 255 255 255 0 Gateway xxx xxx xxx xxx Port 2 IP address DHCP xxx xxx xxx xxx Selecting the Option 34 in Clock Before you can use the Option 34 in your clock make sure that it is selected as an ...

Page 224: ...ging in with the Web Interface See Section C 22 3 for details on using the web interface NTP Status Display Indications During the stabilization process the clock will display different status messages that indicate whether the NTP server is ready to serve time Clock stabilization requires the clock to be locked to the GPS for a period of time after which it will provide its time to the Option 34 ...

Page 225: ... 73 E2 XX XX XX To Determine IP Address using RS 232 Commands Type IP in the terminal window and the clock should return the IP and MAC addresses for both ports in separate lines The IP command will return dashes for an IP address when no cable is connected to that port Option 34 LED Indications To view the Option 34 Status LEDs see the Option 34 rear panel The figure and Table C 16 below describe...

Page 226: ...ch changes to be sure that the changes are committed to the system Alternately by power cycling the clock before logging back in the clock will revert to the old settings Logging in to the Web Interface The Web Interface responds when you open a web browser and type in the IP address of one of the Option 34 ports Each IP address may also be viewed in the 1088A B front panel display if the port is ...

Page 227: ...f you are making changes to another port the web interface connection will not be dropped To make the changes persist you will need to re log in to the web interface using the new setting s To lose changes reboot the clock After making any changes to the NTP service you may experience a delay of up to five minutes for the NTP service to start Startup Page System When logging in to the Option 34 us...

Page 228: ...lection Just as the receiving device must convert the NTP PTP time as it arrives at the device to local time zone so the clock time in the web interface can display local time A number of time zone settings are found in Section C 22 7 Option 34 Network Time Module Status Configure NTP PTP SNMP Clock Network Support Logout System Password Update Reboot Web Interface HTTP HTTPS Console Interface Mis...

Page 229: ...nt the Option 34 to automatically log off of the web interface after a predetermined number of minutes Minutes are declared in the adjacent box from minimum of 3 to a maximum of 1440 Console Interface See Figure C 32 Check the box adjacent to Enable Session Timeout if you want the Option 34 to automatically log off of the SSH Console interface after a predetermined number of minutes Minutes are de...

Page 230: ...igure System Password System Update Update packages may include uploading more than one file to the Option 34 Make sure to follow the instructions included with the update packages and follow these instructions From Figure C 32 select the Update tab and click the Choose File button shown in Figure C 35 This should open your file browser in which you should be able to locate the file package obtain...

Page 231: ...us of your Option 34 follow these instructions Select the Network item on the left side of the web interface Figure C 37 displays network status for both Ethernet Port 1 and Port 2 This includes the IP addresses MAC addresses and some standard data traffic statistics Option 34 Network Time Module Status Configure NTP PTP SNMP Clock System Support Logout Network Ethernet Port 1 IP Address 10 10 1 5...

Page 232: ...ort Logout Network Ethernet Port 1 MAC Address 64 73 E2 00 00 0B Mode DHCP Static Enable VLAN Ethernet Port 2 MAC Address 64 73 E2 00 00 0C Mode DHCP Static Address Netmask Gateway Enable VLAN Apply Reset 192 168 0 65 255 255 255 0 Figure C 38 Configure Network Settings Configure VLAN To configure VLAN network settings follow these instructions Check the box to the left of Enable VLAN to open thes...

Page 233: ...ut Clock 02 May 2013 14 18 03 PDT Time Quality Satellites Tracked Satellites Visible Leap Seconds Current GPS UTC Offset Status Locked 10 10 16 Not Pending Figure C 40 View Operation SNMP Status View this web interface page to check the SNMP status as illustrated in Figure C 41 For additional detail on SNMP in the Model 1088A B see SNMP Support in Section C 22 5 Option 34 Network Time Module Statu...

Page 234: ...Time Set System Time Change Zero Satellites Visible NTP Application Start NTP Application Stop PTP Application Start PTP Application Stop SNMP Application Start SNMP Application Stop Trap Receivers IP Address 1 IP Address 2 IP Address 3 10 10 1 236 Apply Reset Figure C 42 SNMP Configuration Page Checking the box enables the specific item unchecking disables the specific item in the SNMP Configure ...

Page 235: ... is referenced to International Atomic Time TAI from the French name Temps atomique international The time offset may change from time to time when leap seconds are added Figure C 43 illustrates the status of PTP Option 34 Network Time Module Status Configure NTP SNMP Clock Network System Support Logout PTP PTP Service Current UTC PTP Offset Enabled Running 35 Figure C 43 PTP Status Page ...

Page 236: ...gure Option 34 Network Time Module SNMP Enable PTP Service Domain Number Announce Interval Sync Interval Min Delay Request Min Peer Delay Request Announce Receipt Timeout Delay Mechanism Protocol 0 2 2 2 2 3 PTP UDP IPv4 6 20 10 128 Apply Reset Clock Class Clock Accuracy Priority 1 Priority 2 Enable Power Profile Hide Advanced Organization Sub Type Grandmaster ID Grandmaster Time Inaccuracy Networ...

Page 237: ... specifies the time recommended to the member devices to send delay request messages when the port is in the master state The range is 1 second to 6 seconds The default is 5 32 seconds Peer Delay Request allows the requesting device to calculate the propagation delay for the individual segment Announce receipt timeout specifies the number of seconds the announce interval has to pass without receip...

Page 238: ...ts the amount to adjust the local clock to bring it into correspondence with the reference clock Frequency frequency offset PPM relative to hardware clock System Jitter psi is defined as the root mean square RMS average of the most recent offset differences and it represents the nominal error in estimating the offset of the system Clock Jitter is defined as the root mean square RMS average of the ...

Page 239: ...or the NTP Version include Versions 1 2 3 and 4 Multicast and Broadcast addresses may be typed in the assigned boxes Option 34 Network Time Module Status Configure NTP PTP SNMP Clock Network System Support Logout Authentication NTP Version Multicast Address Broadcast Address Ethernet Port 1 Ethernet Port 2 4 Apply Reset Figure C 46 NTP Configure Page ...

Page 240: ...tication is disabled by default Option 34 Network Time Module Status Configure NTP PTP SNMP Clock Network System Support Logout Authentication Apply Reset M Enable Authentication M M M M Key Table ID Format Key Trusted Figure C 47 NTP Authentication Page There are four authentication formats S N A M with different rules for each of the keys For example a type M format MD5 allows the key to have up...

Page 241: ... PTP Clock Network Support Logout System Contact Version Option 34 Network Time Module SNMP Web Management Core Modules Option 34 35 Auth01 Option 34 35 Data Server Firmware Hardware Option 34 Startup App System Monitor CLOI Arbiter 1201 Board 01 462 1 4 1 4 1 4 1 4 2 0 1 1 1 1 1 2 07 May 2013 01 E 1244012 NTP PTP Clock Network Support Logout System Contact Version Option 34 Network Time Module SN...

Page 242: ...he Option 34 Figure C 49 illustrates the opening page Status Configure Password Update Reboot System Time 11 24 17 04 19 2011 System Time Offset 114us Time Quality Locked NTP Running PTP Enabled Running SNMP Enabled Running SNMP Traps Enabled Temperature 33 3C ARBITER SYSTEMS Option 34 Network Time Module NTP PTP SNMP Clock Network System Support Logout Computer Name or IP address ssh 80x24 Figure...

Page 243: ... time as it arrives at the device to local time zone so the clock can display local time Status Configure Password Update Reboot Web Interface HTTP HTTPS Port 443 PEM File Download Replace Enable Session Timeout Console Interface Enable Session Timeout Miscellaneous X Respond to Ping Requests Time Zone Setting PST8PDT7 Apply Reset ARBITER SYSTEMS Option 34 Network Time Module NTP PTP SNMP Clock Ne...

Page 244: ...126 and be from 1 to 16 characters Spaces are not allowed ASCII 32 and there are no other requirements Status Configure Password Update Reboot Current Password New Password Confirm New Password Apply Reset ARBITER SYSTEMS Option 34 Network Time Module NTP PTP SNMP Clock Network System Support Logout Computer Name or IP address ssh 80x24 Figure C 51 Configure System Password Using SSH System Update...

Page 245: ...s MAC addresses and some standard data traffic statistics Status Configure Ethernet Port 1 IP Address 10 10 1 184 Hardware Address 64 73 E2 00 17 38 Bytes Packets Errors Dropped Rx 2649123 39782 0 110 Tx 1554398 11894 5 0 Ethernet Port 2 Not Active IP Address Hardware Address 64 73 E2 00 17 39 Bytes Packets Errors Dropped Rx 0 0 0 0 Tx 0 0 0 0 ARBITER SYSTEMS Option 34 Network Time Module NTP PTP ...

Page 246: ...0 17 38 DHCP Static Enable VLAN Ethernet Port 2 Hardware Address 64 73 E2 00 17 39 DHCP Static IP Address 10 10 1 185 Netmask 255 255 0 0 Gateway X Enable VLAN VLAN ID 123 VLAN Priority 2 Apply Reset ARBITER SYSTEMS Option 34 Network Time Module NTP PTP SNMP Clock Network System Support Logout Computer Name or IP address ssh 80x24 Figure C 53 Configure Network Settings Using SSH Enable VLAN From F...

Page 247: ... Seconds Current GPS UTC Offset 16 Status Not pending Figure C 54 View Operation Using SSH SNMP Status Use the cursor keys to select SNMP then Status and press ENTER to view the SNMP status as illustrated in Figure C 55 Status Configure SNMP Service Enabled Running SNMP Traps Enabled ARBITER SYSTEMS Option 34 Network Time Module NTP PTP SNMP Clock Network System Support Logout Computer Name or IP ...

Page 248: ... to configure PTP See Section C 22 3 for more information NTP Status Page Use the cursor keys to select NTP then Status and press ENTER Figure C 57 illustrates the status page for NTP Status Configure NTP Enabled Running Root Dispersion 0 451 Offset 0 095 Frequency 8 623 System Jitter 0 008 Click Jitter 0 010 Clock Wander 0 001 Stratum 1 ARBITER SYSTEMS Option 34 Network Time Module NTP PTP SNMP C...

Page 249: ...offset of the clock Clock wander is the RMS of exponentially weighted frequency differences This is not used directly but can along with the jitter be a highly useful monitoring and debugging tool Stratum the level of each server in the hierarchy is defined by a stratum number Primary servers are assigned stratum one NTP Configure To configure NTP follow these instructions Use the cursor keys to s...

Page 250: ...cal clock NTP authentication is disabled by default Status Configure Authentication X Enable Authentication Key Table ID Format Key Trusted M Apply Reset M M M M ARBITER SYSTEMS Option 34 Network Time Module NTP PTP SNMP Clock Network System Support Logout Computer Name or IP address ssh 80x24 Figure C 59 NTP Authentication Page Using SSH There are four authentication formats S N A M with differen...

Page 251: ...EMS Option 34 Network Time Module NTP PTP SNMP Clock Network System Support Logout Computer Name or IP address ssh 80x24 Contact Version Console UI Core 1 4 Modules Option 34 35 1 4 Auth01 1 4 Option 34 35 Data Server 1 4 Firmware Hardware Option 34 2 1 Startup App 1 1 System Monitor 1 1 CLOI 1 2 Arbiter 1084 07 May 2013 Board 01 462 01 e 1244012 ARBITER SYSTEMS Option 34 Network Time Module NTP P...

Page 252: ... set the values of the object instances within an agent TrapUsed by agents to asynchronously inform the NMS of a significant event SNMP v2 Additional Operations and Features GetBulkUsed by the NMS to efficiently retrieve large blocks of data InformAllows one NMS to send trap information to another NMS and to then receive a response SNMP v3 Security Enhancement User based Security Model USM for SNM...

Page 253: ...ps At the bottom are three boxes for IP addresses designated as trap receivers where trap messages may be sent SNMP Configuration Reference Listed below are the configurable options available for snmp traps Trap events will only be sent out if the Trap Receivers are selected and identified by a valid IP address Enable SNMP Service Select this item to make the snmp service active Enable SNMP Traps ...

Page 254: ...P agent that runs on the the Option 34 is also available for download and use in the Model 1088A B The MIB table is normally loaded in a MIB browser and the agent is normally uploaded into the Option 34 ARBITER ALL MIB Revision 0 0003 3 DEC 2012 ARBITER ALL MIB DEFINITIONS BEGIN IMPORTS MODULE IDENTITY OBJECT TYPE enterprises Integer32 Unsigned32 FROM SNMPv2 SMI TEXTUAL CONVENTION TruthValue FROM ...

Page 255: ...TP server arbiter 3 ntpsys OBJECT IDENTIFIER ntp 1 ntptrap OBJECT IDENTIFIER ntp 2 Textual Conventions MilliUnits TEXTUAL CONVENTION DISPLAY HINT d 3 STATUS current DESCRIPTION SYNTAX INTEGER MicroUnits TEXTUAL CONVENTION DISPLAY HINT d 6 STATUS current DESCRIPTION SYNTAX INTEGER General Device Information sysDevLabel OBJECT TYPE SYNTAX OCTET STRING MAX ACCESS read only STATUS current DESCRIPTION ...

Page 256: ...rent DESCRIPTION The device model device 4 version OBJECT IDENTIFIER device 5 sysDevVerLabel OBJECT TYPE SYNTAX OCTET STRING MAX ACCESS read only STATUS current DESCRIPTION The device model version 1 sysDevVerCore OBJECT TYPE SYNTAX OCTET STRING MAX ACCESS read only STATUS current DESCRIPTION The device model version 2 sysDevVerMonitor OBJECT TYPE SYNTAX OCTET STRING MAX ACCESS read only STATUS cu...

Page 257: ... 6 sysDevVerPTP OBJECT TYPE SYNTAX OCTET STRING MAX ACCESS read only STATUS current DESCRIPTION The device model version 7 sysDevVerSNMP OBJECT TYPE SYNTAX OCTET STRING MAX ACCESS read only STATUS current DESCRIPTION The device model version 8 sysDevClockModel OBJECT TYPE SYNTAX OCTET STRING MAX ACCESS read only STATUS current DESCRIPTION The device model device 6 sysDiagLabel OBJECT TYPE SYNTAX O...

Page 258: ...RIPTION The operational status of NTP diag 4 rec1 OBJECT IDENTIFIER gps 1 gpsRec1Label OBJECT TYPE SYNTAX OCTET STRING MAX ACCESS read only STATUS current DESCRIPTION String identifier for receiver 1 rec1 1 gpsRec1Type OBJECT TYPE SYNTAX OCTET STRING MAX ACCESS read only STATUS current DESCRIPTION Receiver 1 GPS system type rec1 2 gpsRec1SatsVisible OBJECT TYPE SYNTAX Integer32 MAX ACCESS read onl...

Page 259: ...m shutting down systrap 2 systrapAdminLogin OBJECT TYPE SYNTAX OCTET STRING MAX ACCESS accessible for notify STATUS current DESCRIPTION System administrative login systrap 3 systrapAdminLogout OBJECT TYPE SYNTAX OCTET STRING MAX ACCESS accessible for notify STATUS current DESCRIPTION System administrative logout systrap 4 systrapTimeQuality OBJECT TYPE SYNTAX INTEGER32 MAX ACCESS accessible for no...

Page 260: ...AX ACCESS read only STATUS current DESCRIPTION the current local time Local time is derived from the hardware clock of the particular machine and increments at intervals depending on the design used ntpsys 3 ntpSysOffset OBJECT TYPE SYNTAX Integer32 MAX ACCESS read only STATUS current DESCRIPTION ntpsys 4 ntpSysFreq OBJECT TYPE SYNTAX MilliUnits MAX ACCESS read only STATUS current DESCRIPTION ntps...

Page 261: ...ad only STATUS current DESCRIPTION the maximum error relative to the primary reference source at the root of the synchronization subnet in seconds Only positive values greater than zero are possible ntpsys 10 ntpSysLeap OBJECT TYPE SYNTAX Integer32 MAX ACCESS read only STATUS current DESCRIPTION two bit code warning of an impending leap second to be inserted in the NTP timescale ntpsys 11 ntpSysSt...

Page 262: ...ized the value is zero ntpsys 14 ntptrapPowerUp OBJECT TYPE SYNTAX OCTET STRING MAX ACCESS accessible for notify STATUS current DESCRIPTION NTP server powering up ntptrap 1 ntptrapShutDown OBJECT TYPE SYNTAX OCTET STRING MAX ACCESS accessible for notify STATUS current DESCRIPTION NTP server shutting down ntptrap 2 ntptrapSynchronized OBJECT TYPE SYNTAX OCTET STRING MAX ACCESS accessible for notify...

Page 263: ...dded ASCII string In the case of stratum 2 and greater secondary reference this is the four octet Internet address of the peer selected for synchronization ntpSysRefTime the local time when the local clock was last updated If the local clock as never been synchronized the value is zero ntpSysPoll the minimum interval between transmitted messages in seconds as a power of two For instance a value of...

Page 264: ...twork Two Ethernet Version 2 0 IEEE 802 3 10 100BT or multimode SSF modules Protocols NTP SNTP PTP IEEE 1588TM 2008 UDP ICMP SNMP TCP SSH SCP SSL HTTP HTTPS Operator Interface Management Web and SSH Console Status LEDs Sync green Fault red Link green 10baseT yellow 100baseT Setup IP number DHCP or Static Net Mask Reference Identifier UDP Broadcast parameters MD5 and DES authentication keys are opt...

Page 265: ... Greenland Standard Time GST3 Korean Standard Time KST 9KDT Newfoundland Standard Time NST3 30NDT China Coast Time CCT 8 Atlantic Standard Time AST4ADT Hong Kong Time HKT 8 Western Standard Brazil WST4WDT Singapore Standard Time SST 8 Eastern Standard Time EST5EDT Western Australian Standard WAS 8WAD Chile Standard Time CST5CDT Java Standard Time JST 7 30 Acre Standard Time AST5ADT North Sumatra T...

Page 266: ...eviation channel A or B see individual clock Operation Manual The proportion is 1 V per 10 µs deviation 50 µs full scale Digital Outputs Output Type High Speed CMOS 74HC126 0 to 5 volts with 47 ohm series resistance Available Outputs Note All outputs available on Model 1088B IRIG B IRIG format B time code unmodulated C 23 3 Changing Outputs via Internal Settings Case Removal To change the configur...

Page 267: ...tion 3 If all of the four outputs need to be set to provide unmodulated IRIG B place each function jumper to position 3 Mode Selection Jumpers JMP9 JMP10 JMP11 JMP12 control the signal driver for each output analog or digital Make sure to select these output mode jumpers for each output For each output position A selects a digital driver and position B selects an analog driver The table below indi...

Page 268: ...20 21 22 JMP1 JMP2 JMP3 JMP4 J1 Arbiter Systems Inc Assembly Number LB0050300 Rev __ A B A B A B A B Figure C 61 Option 36 Jumper Configuration If IRIG B is chosen as the output signal then each selected output should produce a waveform very similar to one of the drawings in Figure C 62 below ON TIME 1 PPS IRIG B003 B004 REFERENCE REFERENCE IRIG ZERO IRIG B123 B124 IRIG ONE Start of next second in...

Page 269: ... 6 A 5 MPPS 7 A 1 MPPS 8 A 100 kPPS 9 A 10 kPPS 10 A 1 kPPS 11 A 100 PPS 12 A 60 PPS 13 A 50 PPS 14 A 10 PPS 15 A IRIG D 1 PPM 16 A 1 PPM 17 A 1 PPS 18 A Programmable Pulse 19 A Out of Lock 20 A IRIG B Mod Manch 21 A No Connection 22 A Table C 18 Option 36 Output Connector Jumper Settings NOTE If any of the jumpers were changed replace the cover to the chassis before returning to service ...

Page 270: ...250 Options List ...

Page 271: ...Appendix D CE Mark Certification D 1 Introduction On the following pages contain the individual CE Mark Certifications for models covered in this manual This includes Model 1088B ...

Page 272: ... Harmonized EN55011 Class A Radiated and Conducted Emissions Standard EN50082 1 Generic Immunity Part 1 Referenced Residential Commercial and Light Industrial Environments EN61010 1 Safety requirements of Electrical Equipment for Measurement Control and Laboratory Use Signed Signatory Bruce H Roeder This certificate declares that the described equipment conforms to the applicable requirements of t...

Page 273: ...Appendix E Statement of Compliance E 1 Introduction The following page is a statement of compliance that includes Model 1088B ...

Page 274: ...e products are available with all known time synchronization signals presently in use world wide by the electric power industry Arbiter Systems does not supply a type test certificate as requested for G P S systems as the accuracy is a function of the G P S system and not of the receiver However we Arbiter hereby certify that this equipment conforms to all Arbiter Systems Incorporated specificatio...

Page 275: ... 253 cable accessory 24 adjacent signal interference 25 delays 64 distance 61 physical protection 24 timing output 61 user supplied 25 wire losses 63 CE Compliance Notice 251 CE mark certifications 251 comm ports 69 command key definitions 7 configure begin 33 firmware setup 33 settings auto survey 53 back light 40 broadcast 36 daylight saving time 38 event deviation 50 irig time data 49 local hou...

Page 276: ...ions 1 IEC 320 connector 9 initial clock time 93 initial LED indication 93 initial startup sequence 93 inlet power 13 ip address making changes 207 IRIG B IEEE 1344 description 60 initial indication 96 modulated voltage matching 63 timecode description 59 unmodulated 60 waveform comparison 60 IRIG B Time code types 59 issuance ii keys description 7 Down 8 Enter 8 Event Deviation 8 Position 8 Setup...

Page 277: ...ount mounting instructions 2 rear panel see panel rear RG 11 cable 24 crimp tool 24 ROM date ii serial command antenna delay set 89 arm event trigger 76 backlight auto 81 backlight off 81 backlight on 81 broadcast ASCII Quality 73 broadcast ASCII Std 71 broadcast Event Data 71 broadcast Extended ASCII 73 broadcast NMEA183 GLL 74 broadcast NMEA183 ZDA 75 broadcast Status 72 broadcast strings 71 bro...

Page 278: ...y mode 85 serial port output symbols 70 pin definitions 91 103 Setup menu list 33 signal output description 59 SNMP 232 configuration reference 233 configuring traps 233 enabling 233 mib object definitions 243 mib table 234 mib table info 232 service 232 traps or notifications 233 version info 232 SNTP see NTP Server SSH console 222 configure https 223 configure network settings 226 configure ntp ...

Page 279: ...gure ntp 219 configure password 210 configure ptp 216 configure snmp 214 configure vlan 212 GPS status time quality 213 IP address 207 logging in 206 network settings 211 ntp authentication 220 ntp status 218 ntp terminology 218 Option 34 support information 220 ptp status 215 snmp status 213 startup page 207 system configuration 208 system configure https 209 system reboot 211 system update 210 ...

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