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 Description This manual is issued for reference only, at the convenience of Arbiter Systems. Reasonable eﬀort was made to verify that all contents were accurate as of the time of publication. Check with Arbiter Systems at the address below for any revisions made since the original date of publication.
Page 3 See Contact Information on page ii. “Limited Lifetime” means that Arbiter Systems will repair or replace the defective component as long as com- ponents are available and for no more than ﬁve years after the product has been deemed obsolete.
Page 5 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 February 2016 All rights reserved. International copyright secured. PD0013700AF...
Page 7: Table Of Contents
1.3 Unpacking and Locating Accessories ......1.4 Attaching Rack-Mount Ears to 1088A/B Series Clocks ....
Page 8 viii CONTENTS 3.7 Fuse Types and Locations ....... . . 16 3.7.1 Replacing Fuses .
Page 9 CONTENTS 6.6 Set System Delays ........41 6.7 Set Programmable Pulse Mode .
Page 10 CONTENTS 8.2.2 Event Timing Latency ......65 8.2.3 Deviation Measurement ......66 8.2.4 Measurement Principle .
Page 11 CONTENTS 10.5.3 Elevation Display ........98 A Technical Speciﬁcations and Operating Parameters A.1 Scope .
Page 12 CONTENTS B.4 Physical Dimensions ........106 C Options List C.1 Introduction .
Page 13 CONTENTS xiii C.12.5 Option 17 Connector Pin Designation ..... . 140 C.12.6 Conﬁguration ........142 C.13 Option 17A Second RS-232 Interface .
Page 14 CONTENTS C.19 Option 28: Time, Frequency and Phase Monitor ....180 C.19.1 General Description ....... . 180 C.19.2 Discussion .
Page 15 2.1 Model 1088B Front Panel Description ......2.2 Model 1088A/B Rear Panel Description ......
Page 16 LIST OF FIGURES 6.11 Pulse–Per–Hour Setup ........44 6.12 Pulse–Per–Day Setup .
Page 17 LIST OF FIGURES xvii C.30 Option 32/33 Board, Jumper Locations ......197 C.31 Startup Page ........207 C.32 System Conﬁgure Page .
Page 18 xviii LIST OF FIGURES...
Page 19 List of Tables 2.1 Annunciator LED Deﬁnitions ....... 2.2 Command Key Deﬁnitions ....... . . 3.1 Available IEC-320 Cordsets by Country .
Page 20 LIST OF TABLES C.5 Option 17, RS-232 Port Pins ....... 147 C.6 Option 20A, Four Fiber Optic Output Conﬁguration .
Page 21: Unpacking The Clock
Use care when handling. Remember to store the antenna in a safe place before the ﬁnal installation. Static Discharge Note that the Model 1088A/B series clocks are electronic devices and use static-sensitive components in their operation. Therefore, use care when handling against static discharges.
Page 22: Attaching Rack-Mount Ears To 1088A/B Series Clocks
Attaching Rack-Mount Ears to 1088A/B Series Clocks Each Model 1088A/B comes with two rack-mount ears suitable for mounting in 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.
Page 23: Attaching Rack-Mount Ears
1.4 Attaching Rack-Mount Ears to 1088A/B Series Clocks Figure 1.2: Attaching Rack-Mount Ears...
Page 24 Unpacking the Clock...
Page 25: Front And Rear Panels
Front Panel Controls and Indicators The front panel of the Model 1088A and 1088B are the same except the 1088A does not have the indicator LEDs or optional internal battery switch.
Page 26: Annunciator Led Deﬁnitions
Front and Rear Panels 2.2.1 Annunciator LED Deﬁnitions Annunciator LED Color Purpose Operate Green Clock Operating Charge* Green Illuminates when the charging circuit for the internal battery is in the high charge mode. In Use* Green Illuminates when the power is supplied by backup battery.
Page 27: Command Key Deﬁnitions
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, position and event/deviation data. The readout is also used to display the current conﬁguration of operation parameters.
Page 28: Rear Panel Identiﬁcation And Connectors
Rear Panel Identiﬁcation and Connectors This section contains information to assist you in identifying where to connect inlet power, the GPS antenna cable and all of the input and output cables on the Model 1088A/B series clocks. Figure 2.2: Model 1088A/B Rear Panel Description...
Page 29: Power Inlet
2.3 Rear Panel Identiﬁcation and Connectors 2.3.1 Power Inlet To cover all of the possible inlet power conditions, the Model 1088B has three optional power supplies. Please examine the paperwork you received, to make sure you have correctly identiﬁed the inlet connection. Supply types are listed below: Standard, IEC-320 supply with a range of 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...
Page 30: Antenna Input
2.3.2 Antenna Input The Model 1088A/B provides a type-F, GPS antenna input connector not only as the connection point for GPS signal, but also supplies 5 volts to energize the antenna. It is equipped with a threaded, type-F female connector.
Page 31: Form C, Relay Contacts
2.3.5 Form C, Relay Contacts The Model 1088A/B can be ﬁtted with dry contacts by installing an internal option board in option Slot B. Using Option 19, the 1088B can have one set of Form C mechanical contacts. With Option 29, the 1088B can have two solid-state contacts that can also source +25 or +50 Vdc. For additional information on these two options, see Section C.15, for Option 29, see Section C.20.
Page 32 Front and Rear Panels...
Page 33: Connecting Inlet Power, Input And Output Signals
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.
Page 34: Cordsets And Plug Styles For Iec-320 Inlet Module
Connecting Inlet Power, Input and Output Signals Figure 3.1: IEC-320 Power Supply Inlet De- scription 3.2.1 Cordsets and Plug Styles for IEC-320 Inlet Module Make sure that the cordset matches the wall connector for your country. The following are available IEC-320 mating cordset plug style and speciﬁcations: Country Speciﬁcation...
Page 35: Option 08, 10 To 60 Vdc Power
Option 15A, 110 to 170 Vdc Terminal Power Strip Option 15A for the Model 1088A/B is designed to provide power inlet surge withstand capability in compliance with ANSI C37.90-1 and IEC 801-4. Option 15A also incorporates Option 07, which is a three-pole barrier strip inlet for 125 volt DC substation power.
Page 36: Option 15B, 110 To 300 Vdc Terminal Power Strip
Connector Option 15B, 110 to 300 Vdc Terminal Power Strip Option 15B for the Model 1088A/B is designed to provide power inlet surge withstand capability in compliance with ANSI C37.90-1 and IEC 801-4. Option 15B also incorporates Option 07, which is a three-pole barrier strip inlet for 250 volt DC substation power.
Page 37: Replacing Fuses
3.8 Connecting Output Signals 3.7.1 Replacing Fuses An IEC-320 power inlet connector includes a 1-A, 250-V fast acting fuse. The fuse is contained in a small compartment with a snap-ﬁt latch, which also has a compartment for a spare fuse. The fuse compartment is located directly adjacent to the input connector socket, and can be opened by pulling both sides directly out away from the chassis, or by gently prying with a small ﬂag-blade screwdriver.
Page 38 Connecting Inlet Power, Input and Output Signals...
Page 39: Gps Antenna And Cable Information
ﬁxture. The piece of pipe nipple should be threaded up into the antenna receptacle after connecting the antenna cable to the Type F cable adapter. Arbiter Systems sells an antenna mounting kit (P/N AS0044600) that simpliﬁes installation, and is illustrated in Fig-...
Page 40: Optional Antenna Mounting Kit
The Antenna Mounting Kit (P/N AS0044600) is designed speciﬁcally for use with antennas shipped with Arbiter Systems GPS-controlled clocks. The hardware included with the bracket 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.
Page 41: Antenna Mounting Bracket
4.1 GPS Antenna Installation Figure 4.2: Antenna Mounting Bracket Figure 4.3: Antenna Mounting with AS0044600...
Page 42: Verifying Antenna And Cable Operation
GPS Antenna and Cable Information Verifying Antenna and Cable Operation A two-color operate LED, located at the base of the antenna, indicates proper antenna operation. GREEN indicates proper operation (i.e. the antenna is getting the correct voltage); AMBER indicates improper operation (i.e. the voltage is low). 4.2.1 Checking the Antenna Voltage The GPS clock provides +5 Vdc to the GPS antenna, which is carried through the antenna cable.
Page 43: Technical Details On Gps, Antennas And Cables
4.4 Technical Details on GPS, Antennas and Cables Technical Details on GPS, Antennas and Cables 4.4.1 Antenna Cable Length and Loss Considerations Standard Antenna Cable The standard antenna cable assembly included with the clock is constructed using a 15-meter (50-foot) length of RG-6 type low-loss coaxial cable, terminated with male Type F connectors. Optional lengths of RG-6 coax are separately available for longer runs;...
Page 44 Available Antenna Cables and Accessories for Longer Runs Arbiter Systems oﬀers longer antenna cables for use with all models of clocks when the standard 15-meter (50-foot) cable is inadequate. For RG-6 cable runs greater than 250 feet, up to 500 feet, Arbiter oﬀers a 21-dB in-line ampliﬁer, P/N AS0044700.
Page 45 4.4 Technical Details on GPS, Antennas and Cables Adjacent Signals Although the standard RG-6 style cable is triple-shielded and has excellent shielding properties, be cautious when routing near high power RF sources or alongside cables carrying high power RF, such as transmitter cables.
Page 46 GPS Antenna and Cable Information...
Page 47: Setting Internal Jumpers
Chapter 5 Setting Internal Jumpers Introduction Jumpers in the the 1088B series clocks are already set up at the factory according to the purchase order. If it should be necessary to change any jumpers or to enable any new function, you should follow the instructions in this section.
Page 48: Model 1088B Main Board
Setting Internal Jumpers Figure 5.1: Model 1088B Main Board...
Page 49: Cover Removal
5.2 Changing Hardware Settings Via Internal Jumpers 5.2.1 Cover Removal To change jumper conﬁgurations, the instrument cover must be removed. Remove top cover as follows: 1. On all Models disconnect the power cord. If equipped with Option 04 (power switch), ﬁrst turn the power switch to OFF.
Page 50: Jmp3 External Reference Input Frequency
I/O connectors (the position of some jumpers is slightly diﬀerent in the Model 1088A). 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 desired signal. Table 5.2 lists the jumper settings required for various signals.
Page 51: I/O Connectors Used As Output
5.2 Changing Hardware Settings Via Internal Jumpers Output Signal Output-Function Output-Mode Description Jumper Position Jumper Position IRIG-B Modulated 10 Vpp Deviation (5 V) IRIG-B IRIG-E IRIG-H 10 MPPS 5 MPPS 1 MPPS 100 kPPS 10 kPPS 1 kPPS 100 PPS 60 PPS 50 PPS 10 PPS...
Page 52: Jmp16 Battery Backed Ram
Setting Internal Jumpers 5.2.9 JMP16 Battery Backed RAM Jumper 16 is used to connect the battery to program RAM. This speciﬁc RAM is used to store any user-conﬁgured information such as serial port preferences, local oﬀsets and timing settings anything found in SETUP menu. With the battery disconnected (JMP16 set to OFF), all the user-conﬁgured information would be lost when the clock is powered oﬀ...
Page 53: The Setup Menus
Chapter 6 The Setup Menus This section should guide you in conﬁguring the Model 1088B operation using the SETUP Menus or RS-232C port(s). These menus allow you to conﬁgure the operation according to your preferences. Logically, use the setup menus after installing the clock for the ﬁrst time, or changing any of the main-board jumpers as described in Chapter 5.
Page 54: Numeric Data Entry Mode
The Setup Menus Setup Menus Setup Items Main RS-232C Main RS-232C Port Parameters and Broadcast Local Hour & DST Set Local Oﬀset, Daylight Saving mode Out Of Lock Set Time Interval Before Alarm Backlight Set to ON, OFF or AUTO System Delays Set Timing Delay in Nanoseconds Programmable Pulse...
Page 55: To Exit Setup Menus
6.2 Setting the Main RS-232C Port Menu Item Default Menu Item Default Main RS-232 9600, 8, N, 1 Local Oﬀset & DST none, OFF Out-of-Lock 01 min. Backlight Auto System Delays 60 ns Prog Pulse Sec. per Pulse IRIG-B Time Data UTC, 1344 OFF Event/Deviation 1 PPS Deviation...
Page 56: Setting Serial Port Parameters
The Setup Menus 6.2.1 Setting Serial Port Parameters The “Set Port Conﬁg” menu allows you to conﬁgure any of the RS-232C port parameters from the front panel. Use the UP and DOWN keys to adjust the parameter values. RS-232C: Port parameters may not be changed from RS-232C ports.
Page 57: Set Local Hour
6.3 Set Local Hour Set Local Hour Use “Set Local Hour” to oﬀset the time from UTC to your locale and any Daylight 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.
Page 58: Set Daylight Saving Time (Dst)
The Setup Menus 6.3.1 Set Daylight Saving Time (DST) For automatic changeover, use the AUTO setting explained above. Make sure to determine the changeover requirements in your locale before trying to adjust these clock settings. 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.
Page 59: Set Out Of Lock
6.4 Set Out of Lock Set Out of Lock Use the “Set Out of Lock” feature to control how the clock responds to an out-of-lock condition. Out of Lock means that the GPS receiver in the clock is no longer tracking any satellites and that the time may drift according to characteristics of the internal clock and environmental conditions.
Page 60: Set Back Light
The Setup Menus Set Back Light If the optional back light (Option 01) is installed in the clock, use the “Set Back Light” menu to conﬁgure how the back light operates. If back light is not installed, then the “Set Back Light” menu will have no eﬀect.
Page 61: Set System Delays
6.6 Set System Delays Set System Delays Use the “Set System Delays” menu to set the delay in time for the GPS signal received at the GPS antenna to reach the GPS receiver. The delay in nanoseconds (10 seconds) is a product of the length of the cable and the its velocity factor.
Page 62: Set Programmable Pulse Mode
The Setup Menus Set Programmable Pulse Mode Use the “Set Prog. Pulse” menu to set up one of the many pulse modes available for broadcasting a pulse from J2 J5 (see Table 5.2 and Figure 5.1) at a predetermined interval or rate. Also, there is a “pulse-per-day”...
Page 63: Prog Pulse - Seconds-Per-Pulse Mode
6.7 Set Programmable Pulse Mode 6.7.2 Prog Pulse – Seconds–Per–Pulse Mode Use the Seconds–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.
Page 64: Prog Pulse - Pulse-Per-Hour Mode
The Setup Menus 6.7.3 Prog Pulse – Pulse–Per–Hour Mode Use the Pulse–Per–Hour 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.
Page 65: Prog Pulse - Pulse-Per-Day Mode
6.7 Set Programmable Pulse Mode 6.7.4 Prog Pulse – Pulse–Per–Day Mode Use the 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.
Page 66: Prog Pulse - Single Trigger
The Setup Menus 6.7.5 Prog Pulse – Single Trigger Use the Single Trigger mode to generate a pulse once 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.
Page 67: Prog Pulse - Slow Code
6.7 Set Programmable Pulse Mode 6.7.6 Prog Pulse – Slow Code Slow code is a programmable pulse 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.
Page 68: Prog Pulse - Pulse Polarity
The Setup Menus 6.7.7 Prog Pulse – Pulse Polarity Use “Pulse Polarity” to change the pulse’s OFF-to-ON behavior as follows: 1. Positive: the voltage is held low (0 Vdc) when the pulse is oﬀ and transitions high (5 Vdc) when on. 2.
Page 69: Set Irig Time Data
6.8 Set IRIG Time Data Set IRIG Time Data Use the “Set IRIG Time Data” menu to adjust 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).
Page 70: Setting The Event/Deviation Modes (A Or B)
The Setup Menus Setting the Event/Deviation Modes (A or B) Use the Event/Deviation Mode to capture an event at J3 and/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).
Page 71: Arming The Event Input
6.9 Setting the Event/Deviation Modes (A or B) 6.9.1 Arming the Event Input When using J3 or J4, note that the event function 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.
Page 72: Setting The Frequency Reference
The Setup Menus 6.9.2 Setting The Frequency Reference The Model 1088B can accept an external clock signal in place of the internal clock signal. If you are going to use an external Frequency Reference, connect it to J5 on the rear panel. Acceptable signals are 100 kHz, 1 MHz, 5 MHz and 10 MHz.
Page 73: Setting The Auto Survey Mode
6.10 Setting the Auto Survey Mode 6.10 Setting the Auto Survey Mode Use one of the Auto Survey modes to control how and when the clock determines position infor- mation. The accuracy of the position (and indirectly, time) is based on averaging the assigned number of position ﬁxes surveyed, either during startup or by a single survey.
Page 74: Set Position Hold On Or Off
The Setup Menus 6.11 Set Position Hold ON or OFF With Position Hold turned ON, the surveyed position is placed into memory and used for computing more precise timing solutions. With Position Hold turned OFF, the GPS receiver is placed in the Fix mode, calculating a new position approximately every second.
Page 75: Set Option Control
6.12 Set Option Control 6.12 Set Option Control The Model 1088B has two internal option slots (Slot A and Slot B) to increase its functionality. 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;...
Page 76 The Setup Menus...
Page 77: Timing, Irig-B And Pulses
Chapter 7 Timing, IRIG-B and Pulses Introduction This section should help you with understanding, choosing and connecting the correct outputs from the Model 1088B series clocks to synchronize equipment, such as protective relays. It should also answer some basic questions, such as: What are the diﬀerent types of IRIG-B, and how are they diﬀerent? How do you connect multiple devices to one timing output? How far can you transmit timing signals?
Page 78: Timing Output Description
Timing, IRIG-B and Pulses Timing Output Description When viewing the rear panel of the Model 1088B, you will see that there are a number of diﬀerent types of connectors as illustrated in Figure 7.1. Generally, there is a power inlet connector, a GPS antenna connector, one DB-9 serial connectors, a series of four connector plugs and one option plate.
Page 79: Output Signal Description
Table 7.1: Drive Current vs. Voltage Output Signal Description Model 1088A/B can provide twenty diﬀerent digital signals and two analog signals that are listed in Table 5.2. With an option card installed in Slot A or B, all of these signals are available at the option card as well;...
Page 80: Modulated And Unmodulated Irig-B
Timing, IRIG-B and Pulses 7.3.2 Modulated and Unmodulated IRIG-B Figure 7.2 illustrates the primary diﬀerences between modulated and unmodulated IRIG-B. You will notice that the while modulated IRIG-B is distinctive because of the 1 kHz sinewave carrier, it is similar to unmodulated IRIG-B since the peak-to-peak values of the carrier follow the same form as the digital waveform, where the information is contained.
Page 81: Connecting Outputs
7.4 Connecting Outputs that the rising edge is “on time” as compared with the signal from the Global Positioning System (GPS). It has the same drive power as any other digital signal available from the 1088B. See Figure 7.2 for a comparison between unmodulated IRIG-B and 1 PPS. 7.3.5 Programmable Pulse (PROG PULSE) The Model 1088B has an independent programmable pulse feature that requires setting a jumper...
Page 82: Synchronizing Multiple Ied's From One Masterclock Output
Timing, IRIG-B and Pulses For details on distributing IRIG-B signals over long distances, see application note, AN101, Dis- tributing Timing Signals in a High-EMI Environment. Download ﬁle appnote101.pdf at the follow- ing link: http://www.arbiter.com/resources/documentation.php For important considerations about IRIG-B connections, distribution of signals and accuracy, down- load the ﬁle, IRIG-B accuracy and connection requirements.pdf at the following link: http://www.arbiter.com/resources/documentation.php.
Page 83: Wire Losses
7.4 Connecting Outputs with no loads) is approximately 10 Vpp, so any connected loads will cause the available voltage to drop. It is a simple task to compute the available output voltage (Vpp) with a known current. (7.2) V pp = 10 V pp 557 Ohms Therefore, if you had 10 mA of load current (I load) the available voltage (Vpp) would be 4.43 Vpp.
Page 84: Cable Delays
(VF), which is a percentage of the speed of light in free space, and characteristic of the speciﬁc cable. The velocity factor for the RG-6 cabling used by Arbiter Systems for GPS antenna connections, is about 83% of C. Most transmission lines have velocity factors in the range of 65% to 97%.
Page 85: Relay Contacts And Event Inputs
Chapter 8 Relay Contacts and Event Inputs Relay Contacts, Model 1088B can supply relay contacts through installation of an optional accessory. Option 19 provides one Form C (SPDT) set of contacts that can be used for the Out-of-Lock function. Option 29 provides four additional timing outputs and has two solid-state relays available with output multiple functions and +25/50 Vdc supplies.
Page 86: Deviation Measurement
Relay Contacts and Event Inputs 8.2.3 Deviation Measurement Both Channel A and B inputs can also be conﬁgured to display measured event times as 1 pulse- per-second (1 PPS) deviation measurements. The intended purpose of the deviation measurement function is to allow comparison of an external 1–PPS signal to the clock’s internal 1–PPS signal. The clock determines the mean time diﬀerence between the two signals, which can be displayed on the front panel or read via the RS-232 Interface.
Page 87: Rs-232C Event Trapping
8.2 Event Inputs Where: “nnn” = event number (001 to 200) “ddd” = day of year of the event (1 to 366) “hh” = hour of the event (00 to 23) “mm” = minute of the event (00 to 59) “ss.sssssss”...
Page 88: Event Trapping Setup
Relay Contacts and Event Inputs To perform event trapping via the RS-232C interface, the circuit must ﬁrst be ARMED; that is, made ready to receive an event trigger. Only one event may be captured after every arming, but the events are stored sequentially in the event buﬀer in exactly the same manner as the normal event time mode, thereby allowing up to 200 events to be recorded.
Page 89: Serial Communication And Command Set
Chapter 9 Serial Communication and Command Introduction The Model 1088B has one main RS-232C port, and one optional RS-232C port (Option 17A). These are labeled RS-232C and Option RS-232C. When viewing the rear panel, the main port is nearest the antenna connector and the optional port is to the left of the Standard I/O connectors. It is important to note that neither the standard RS-232, nor the Option RS-232C port have an RS-485 function and neither RS-232C ports use ﬂow control.
Page 90 Serial Communication and Command Set When a command requests information from a clock, it returns the most current data available. Numeric data is returned as an ASCII string of numeric characters, with leading sign and embedded decimal point as needed. Strings are normally terminated with carriage return and line feed char- acters, however sometimes this is not the case.
Page 91: Broadcast Mode Commands
B2 conﬁgures the clock to broadcast data formatted for Vorne large format time displays from the main RS-232C port. O2 conﬁgures the clock to broadcast from the option RS-232C port Vorne- formatted data. Refer to Arbiter Systems Application Note 103 for more information on using large format displays with Arbiter Systems’ GPS clocks.
Page 92: Fault Indications And Deﬁnitions
Serial Communication and Command Set Broadcast Mode – STATUS Command: B4, O4 B4 conﬁgures the clock to broadcast any status data from the main RS-232C port when it changes. O4 conﬁgures the clock to broadcast any status data from the option RS-232C port when it changes. NOTE: When a valid fault is detected, the speciﬁc status fault is broadcast once (with Julian day, and time) to the chosen serial port.
Page 93 9.2 Command Set Broadcast Mode – EXT. ASCII Command: B5, O5 B5 conﬁgures the clock to broadcast from the main RS-232C port, the time-of-day as ASCII data using an extended format prefaced with a time quality indicator (Q). O5 conﬁgures the clock to broadcast the same data from the option RS-232C port.
Page 94 Serial Communication and Command Set Broadcast Mode – YEAR plus ASCII Command: B8, O8 B8 conﬁgures the clock to broadcast from the main RS-232C port, the year and time-of-day as ASCII data appended with a time quality indicator. O8 conﬁgures the clock to broadcast from the option RS-232C port.
Page 95: Event Mode Commands
9.2 Command Set Broadcast Mode - NMEA183ZDA Command: 1,nB 1,nB conﬁgures the clock to broadcast the National Marine Electronics Association Standard (NMEA - 0183) to broadcast ZDA format from the main RS-232C port, where n = the update rate in seconds from 1 to 9999. ZDA, time and date, includes the UTC day, month, year, and local time zone.
Page 96 Serial Communication and Command Set Set Channel – Event Command: AE, BE AE sets channel A, and BE sets channel B, to the event recording mode. Response: Clear Event Buﬀer Command: CA, CB CA clears the channel A, and CB clears the channel B, event buﬀer and then resets the read and write indices to 0.
Page 97: Status Mode Commands
9.2 Command Set 9.2.3 Status Mode Commands Return Status of Event/Deviation Command: SA, SB SA and SB return the event/deviation channel setup information for channels A and B respectively, read index number and write index number. Response: D(E), R = nnn, S = mmm Format: indicates the input channel is in 1–PPS deviation mode indicates the input channel is in event mode...
Page 98 Serial Communication and Command Set Survey Status Command: SQ SQ returns Auto-Survey mode data. For a survey in progress, it returns current status of the survey. For a completed survey, it returns the ﬁnal results of the survey, i.e. the averaged position. Response: Sn Pm Fnnnn #nnnn Tyyyy:dd:hh:mm:ss Eddd:mm:ss.sss Ndd:mm:ss.sss Hmmmmm.mm Format:...
Page 99 9.2 Command Set System Status Command: SS SS returns the instrument operation status and Option 18 status (if installed) whenever the status changes. See Table 9.1 for bit assignments of clock conditions. Response: I=nn:nn X=nn:nn (updates whenever status changes) Format: = internal clock conditions = external clock conditions nn:nn...
Page 100: Local/Daylight Savings Time Setup Commands
Serial Communication and Command Set 9.2.4 Local/Daylight Savings Time Setup Commands Return Daylight Saving/Summer Time Settings Command: 0DT 0DT returns the current Daylight Saving / Summer Time Settings to the connected RS-232C port (Modes: OFF, ON, or AUTO). Response: Mode :AUTO START :02:00 Second SUN of MAR STOP :02:00 First SUN of NOV Set Daylight Saving/Summer Time Mode...
Page 101: Front Panel Control Commands
9.2 Command Set Local Oﬀset Command Command: hh:[mm]L hh:[mm]L sets the local oﬀset in hours and ﬁfteen-minute increments from -12:00 to +12:00, where ‘hh’ and ‘mm’ equal the number of hours and minutes, positive (East) or negative (West). Response: 9.2.5 Front Panel Control Commands Disable Control Panel Command: FB...
Page 102: Irig-B Data Output Commands
Serial Communication and Command Set 9.2.6 IRIG-B Data Output Commands IRIG Data IEEE 1344 Command: In In activates (n=1) or deactivates (n=0) the IEEE 1344 extension, which uses IRIG-B control bits for additional information. Information 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.
Page 103: Position Data Commands
9.2 Command Set 9.2.7 Position Data Commands Set Position Hold Elevation Command: MMMMM.mmH MMMMM.mmH command sets the antenna elevation in meters MSL (mean sea level); fractional meters of elevation are optional. Response: Format: MMMMM.mmH M = meters m = fractional meters Set Position Hold Latitude Command: dd:mm:ss.sssN(S)
Page 104 Serial Communication and Command Set Return Latitude Command: LA LA returns the current antenna latitude. In Position Hold mode, LA returns the current position- hold latitude setting. In Fix mode, LA returns the most recent computed latitude value (calculated each second). Response: Ndd:mm:ss.sss Format:...
Page 105: Survey Mode Commands
9.2 Command Set Position hold position information is set using the Set Position Hold RS-232 commands, the front- panel Edit Position Hold function, or the Auto-Survey function. 9.2.8 Survey Mode Commands Auto Survey Mode Selection Command: m,nQ m,nQ sets the mode (m) and number of ﬁxes to average (n). Used to automatically determine position data for Position–Hold.
Page 106: Date And Time Commands
Serial Communication and Command Set 9.2.9 Date and Time Commands Set Receiver Time Command: yyyy:mm:dd:hh:mmTS TS sets the receiver time to the entered value (UTC format), only when not locked to the GPS. The command is ignored when locked to satellites. When the receiver is initially activated, and has not locked onto satellites, acquisition time may be improved by giving the clock 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.
Page 107: Programmable Pulse Output Commands
9.2 Command Set NOTE: The DL, DU, TL and TU command formats are identiﬁed as follows: yyyy = year = hour = month (JAN DEC) = minute = day of month = second = day of year 9.2.10 Programmable Pulse Output Commands Pulse Width Command: nnn.nnPW nnn.nnPW conﬁgures the Programmable Pulse output pulse width in seconds, from 0.01 to 600...
Page 108 Serial Communication and Command Set Set Alarm Time Mark Command: ddd:hh:mm:ss(.ss)OU(OL) OU sets the time at which the clock issues the programmable pulse, in the UTC format. OL sets the time at which the clock issues the programmable pulse, in the Local format. If ddd is set to 0, the pulse will repeat daily at the speciﬁed time.
Page 109: Antenna System Delay Commands
9.2 Command Set 9.2.11 Antenna System Delay Commands Set Antenna Delay Command: nnnnnnDA nnnnnnDA sets antenna system delay compensation value. NOTE: Factory default setting for the standard 15-meter (50-foot) cable is 60 ns. Time range is from 0 to 999999 nanoseconds. The exact syntax for a 60-ns delay is 60DA.
Page 110: Option Control Settings
Serial Communication and Command Set Set Option Control Command: m,n,k,lXI m,n,k,lXI conﬁgures the speciﬁed option in the clock, where m = 0 for option Slot A and m = 1 for the option Slot B. See Table 9.6. Where: m = 0 for option Slot A, and m = 1 for option Slot B. n = option number (see table below) k = security key;...
Page 111: Communication Port Information
9.3 Communication Port Information Return IP/MAC Address Command: IP This command returns the IP and MAC addresses of both ports of the Option 34. Dashes are used to show either an unassigned or unconnected port IP address. Response: NET1: 192.168.000.232 64:73:E2:00:00:23 Response: NET2: ---.---.---.--- 64:73:E2:00:00:24...
Page 112 Serial Communication and Command Set...
Page 113: Startup And Basic Operation
Chapter 10 Startup and Basic Operation 10.1 Initial Startup Sequence Before powering ON any of these clock models, make sure that the chassis cover is installed and if equipped with a power switch, that inlet power is properly connected to the power inlet connector. If the clock does not have a power switch, then the clock will begin the startup sequence when inlet power is connected to the rear panel.
Page 114: Front Panel Indication
At this time, the Out-of-Lock LED should extinguish and the Out-of-Lock relay close. 10.2 Front Panel Indication 10.2.1 Display Indication at Startup 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:...
Page 115: Status Display Indications
10.2 Front Panel Indication 10.2.3 Status Display Indications Display indications when successively pressing the STATUS key are as follows: CLOCK STATUS STARTUP* *The second line will change between STARTUP, to UNLOCKED (with time), to NOT STABILIZED, to LOCKED–AUTO SURVEY, to LOCKED–POSITION HOLD. followed by: GPS RECEIVER STATUS TRACKING: 00*...
Page 116: Irig-B Time Data
Startup and Basic Operation 10.2.5 IRIG-B Time Data IRIG-B time is immediately sent out, when the clock is powered ON, from any timing output port conﬁgured for IRIG-B as indicated above. Time will not be accurate until the Unlocked LED extinguishes.
Page 117: Time Of Year Display, Utc
10.4 Time Display Modes www = day of the week (Mon - Sun) dd = day of the month mmm = month (Jan - Dec) yyyy = the year hh = the hour (00 - 23) mm = the minute (00 - 59) ss = the second (00 - 59) This mode displays UTC, Time of Year mode, without the application of daylight saving correction and local oﬀset.
Page 118: Daylight Saving/Summer Time
Startup and Basic Operation 10.4.5 Daylight Saving/Summer Time The Daylight Saving / Summer Time (DST) conﬁguration feature allows expanded settings. The addition of AUTO allows the user to customize the DST/Summertime settings to match the re- quirements of locations in either Northern or Southern latitudes. For setup information through the front–panel interface, please see Section 6.3.1.
Page 119: A Technical Speciﬁcations And Operating Parameters
Appendix A Technical Speciﬁcations and Operating Parameters Scope Information in this section includes speciﬁcations relating to the physical and operational charac- teristics of the standard Model 1088B Satellite Controlled Clock. Topics included in this section are Receiver Characteristics, I/O Conﬁguration, System Interface(s), Antenna System, Operator Interface(s), and Physical Speciﬁcations.
Page 120: Satellite Tracking
Technical Speciﬁcations and Operating Parameters A.2.5 Satellite Tracking 12 channels, C/A code (1575.42 MHz) The receiver simultaneously tracks up to twelve satellites. Results from all tracked satellites are averaged in Position-Hold Mode or, with Position-Hold Oﬀ, are determined by least-squares esti- mation.
Page 121: Event Inputs
1-in. – 14 (approximately M25.4 x 1.81) marine-mount thread or a 3/4-in. NPT pipe thread. Other mounting conﬁgurations are available (contact Arbiter Systems). GPS Antenna Assembly, 3/4-in. Pipe Thread Mount, 35 dB gain; Operates on 5 Vdc.
Page 122: Operator Interface
Technical Speciﬁcations and Operating Parameters Operator Interface A.5.1 Setup Methods Via RS-232C Interface 8 Front-panel keys A.5.2 Setup Functions Initial Position System Delays Auto Survey RS-232 Parameters Programmable Pulse Position Hold Local Hour IRIG Time Data Option Control Out-of-Lock Indication Event/Deviation –...
Page 123: System Interface
A.6 System Interface System Interface A.6.1 RS-232C Interface Pin No. Function Pin No. Function Not Connected Note Connected RS-232, Rx Data Not Connected RS-232, Tx Data Auxiliary Input Auxiliary Output Not Connected Ground – – Table A.2: Main RS-232 Port Pin Deﬁnitions Communication Parameters Selectable, 300 19,200 baud, 7 or 8 data bits, 1 or 2 stop bits, odd/even/no parity...
Page 124: Power Requirements
Technical Speciﬁcations and Operating Parameters A.7.3 Power Requirements The Model 1088B can be ordered with one of ﬁve user-speciﬁed internal power supplies. Addition- ally, the antenna receives power through the antenna cable connected to the Type F connector on the rear panel. Standard: IEC-320 power inlet connector, 85 264 Vac, 47 440 Hz, or 110...
Page 125: B Using Surge Arresters
Appendix B Using Surge Arresters Introduction These instructions cover the installation of the Arbiter Systems Model AS0094500, Surge Arrester. The AS0094500 performs two basic functions: 1. Provides a solid and reliable grounding point for the antenna system connected to a GPS receiver;...
Page 126: Antenna And Clock Connections
Using Surge Arresters If grounding via the ground-wire screw connection, use the largest possible gauge wire, with the shortest possible ground path. Hole diameter allows up to 8 AWG wire (0.129 in or 3.26 mm). This wire should be as short as possible, and connected to a good earth ground. Alternately, the AS0094500 could be mounted directly to a well-grounded plate within the facility.
Page 127: Suggested Mounting Of The As0094500 Surge Arrester
B.4 Physical Dimensions Figure B.1: Suggested Mounting of the AS0094500 Surge Arrester...
Page 128 Using Surge Arresters...
Page 129: C Options List
Appendix C Options List Introduction Each Arbiter Model 1088B Satellite-Controlled Clock has a number of options that may be in- stalled for special purposes. This section is devoted to these options, and provides supplemental and detailed information for operation and conﬁguration of these options. While many of these options apply to other clock models than the Model 1088B, references to these models will be found throughout this document.
Page 130: Option 01: Backlighted Lcd Display
Options List Option 01: Backlighted LCD Display C.2.1 General Description Option 01 for the Arbiter System line of Satellite-Controlled Clocks adds illumination to the front panel display, if so equipped. The standard reﬂective liquid crystal display (LCD) is replaced with a transﬂective LCD.
Page 131: Option 02: Gps Battery Backup - Obsolete
NOTES: 1. There is no relationship between the GPS backup battery and the RAM backup battery included in a standard Model 1088A/B clock. The purpose of the standard RAM backup battery is to preserve the conﬁguration settings for the instrument.
Page 132: Option 03: Four Additional Outputs - Obsolete
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-µs deviation ( 50 µs full scale).
Page 133: C.4 Option 03: Four Additional Outputs - Obsolete
C.4 Option 03: Four Additional Outputs - Obsolete IRIG-E: IRIG format E time code. IRIG-H: IRIG format H time code. 10 MPPS: 10,000,000 pulse-per-second (PPS) square wave, synchronous to the 1-PPS output. 5 MPPS: 5,000,000-PPS square wave, synchronous to the 1-PPS output. 1 MPPS: 1,000,000-PPS square wave, synchronous to the 1-PPS output.
Page 134: Option 03 Jumper Conﬁguration
Options List General Information Option 03 incorporates an extremely ﬂexible output selection system using jumpers on the Option 03 printed circuit board. Each of the four rear-panel BNC-type I/O connectors, included with Option 03, can be conﬁgured to perform any of the available output functions. Figure 1 shows the locations and functions for all of the jumpers on the Option 03 board.
Page 135 C.4 Option 03: Four Additional Outputs - Obsolete Output Signal Function Select Jumper Mode Select Jumper IRIG-B Modulation Deviation IRIG-B IRIG-E IRIG-H 10 MPPS 5 MPPS 1 MPPS 100 kPPS 10 kPPS 1 kPPS 100 PPS 60 PPS 50 PPS 10 PPS IRIG-D/1 PPM 1 PPM...
Page 136: Option 04: Parallel Bcd Output
Options List Option 04: Parallel BCD Output C.5.1 General Description The Option 04 has 1 millisecond Resolution and expands the capabilities of the Model 1088B to include: Either of the following: – Time-of-year output in Binary-Coded Decimal (BCD) format, with resolution down to 1 millisecond;...
Page 137: Option 04 Firmware Setup
C.5 Option 04: Parallel BCD Output C.5.2 Option 04 Firmware Setup Figure C.2: Option 04 Firmware Setup...
Page 138: Speciﬁcations
Options List C.5.3 Speciﬁcations General Output Connector: 50 contact;Amphenol P/N 850-57L-40500-2700or equivalent. Mating Connectors: Plastic: Amphenol P/N 850-57F-30500-20 Metal Shell: Amphenol P/N 850-57FE-30500-20 Parallel BCD Output Data Bus Width: 42 bits. For weighting, refer to Table 1. Output Type: High-Speed CMOS, buﬀered, (74HCXXX), 0 to 5 volts. Time Data Format: UTC or Local time data;...
Page 139: Digital Outputs
Range for ”nn” is 00 to 99, and is set us- ing the SETUP menu or RS-232C (refer to Chapter 6 and Appendix C). Setting of 00 disables this function (output re- mains ”high”). * Available only with the Model 1088A/B series clocks.
Page 140: Option 04 Connector Pin Designation
Options List C.5.5 Option 04 Connector Pin Designation PinNo: BCD Mode Parallel Data Mode Function/Bit Weighting: Function: Ground Ground 1 PPS output Data Bit 47 Output 4 (Dig. only) Data Bit 45 Output 2 (Dig./An.) Data Bit 27 Day 200 Data Bit 35 Day 80 Data Bit 43...
Page 141: Option 04 Output Connector
C.5 Option 04: Parallel BCD Output Table C.2 continued. 40 Sec. Data Bit 18 10 Sec. Data Bit 16 4 Sec. Data Bit 14 1 Sec. Data Bit 12 400 mS Data Bit 10 100 mS Data Bit 8 40 mS Data Bit 6 10 mS Data Bit 4...
Page 142: Conﬁguration
Options List C.5.6 Conﬁguration General Case Removal To change the conﬁguration of Option 04, the top cover of the instrument must be removed. Turn oﬀ the instrument, and disconnect the power cord. Using a T-25 driver, remove the four screws holding the cover (and rack mount ears, if used) in place, and lift the cover oﬀ.
Page 143 C.5 Option 04: Parallel BCD Output Parallel Data Output Mode Full operation in the parallel data output mode utilizes all 50 contacts of the output connector. However, use of any combination of digital signal outputs or analog signal outputs will reduce the number of data bits available by up to four (data bits 19, 27, 44, and 45).
Page 144 Options List Analog Signal Outputs The two analog signal outputs can be individually enabled and conﬁgured, using the following steps: 1. To enable analog signal output number 1, set jumper JMP4 to position ”B”. This setting also eliminates the possibility of having parallel data bit 44, digital signal output number 3. 2.
Page 145: Option 04 Output Jumper Settings
C.5 Option 04: Parallel BCD Output Figure C.4: Option 04 Output Jumper Settings...
Page 146: Option 04 Board Layout And Jumper Locations
Options List Figure C.5: Option 04 Board Layout and Jumper Locations...
Page 147: Option 07: Inlet Power Supply Description
C.6 Option 07: Inlet Power Supply Description Option 07: Inlet Power Supply Description C.6.1 85 to 264 Vac, 47 to 440 Hz, 110 to 370 Vdc, Terminal Power Strip Option 07 replaces the standard IEC-320 power inlet module with a three-position, screw-type terminal block.
Page 148: Option 08: Inlet Power Supply Description
Options List Option 08: Inlet Power Supply Description C.7.1 10 to 60 Vdc ONLY, Terminal Power Strip, SWC Option 08 replaces the standard IEC-320 power inlet module with a three-position, screw-type terminal block. With DC ONLY inlet voltages from 10 to 60 Vdc, this feature is intended for use in installations where it is necessary or desirable to have the instrument power hard-wired.
Page 149: Options 10: Battery Backup Obsolete
C.8 Options 10: Battery Backup Obsolete Options 10: Battery Backup Obsolete Option 11: Four Additional Outputs and Battery Backup Obsolete...
Page 150: Option 12: Ocxo And Four Additional Outputs
ﬁrmware will automatically recognize the Option 12 assembly. To change the ﬁrmware setup for Option 12, use the SETUP menu of the Model 1088A/B. Press the SETUP key repeatedly until SET OPTION BOARD appears in the display. Press ENTER, and then press the UP key until OPTION 12 appears.
Page 151: Digital Outputs
C.10 Option 12: OCXO and Four Additional Outputs C.10.5 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). IRIG-E: IRIG format E time code.
Page 152: Changing Output Settings Via Internal Jumpers
C.10.8 Main Board Hardware Setup via Internal Jumpers Hardware and ﬁrmware conﬁguration of the Model 1088A/B is performed at the factory when this option is ordered at the same time as the clock. The following instructions are intended primarily for ﬁeld installation.
Page 153: Option 12 Output Signal Jumper Locations
C.10 Option 12: OCXO and Four Additional Outputs Jumpers 2 and 3 of the main board assembly (see Figure 5.1 in this Manual) must be set properly to allow 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).
Page 154: Option 15A And 15B: Inlet Power Supply Description
Options List C.11 Option 15A and 15B: Inlet Power Supply Description C.11.1 110–170/110–300 Vdc, 85 to 264 Vac, 47 to 440 Hz Terminal Power Strip, SWC Option 15A and 15B each replace the standard IEC-320 power input module with a three-position, screw-type terminal block, including Surge Withstand Capability (SWC).
Page 155: Option 17: Parallel Bcd Output And Second Rs-232 Port
Option 17: Parallel BCD Output and Second RS-232 Port C.12.1 General Description Option 17 for the Model 1088A/B clocks expand the capabilities of the instrument to include: Either of the following: a. Time-of-year output in Binary-Coded Decimal (BCD) format, with resolution down to 1 millisecond;...
Page 156: Option 17 Firmware Setup Procedure
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: Speciﬁcations
C.12 Option 17: Parallel BCD Output and Second RS-232 Port C.12.3 Speciﬁcations General Output Connector: 50 contact;Amphenol P/N 850-57L-40500-2700or equivalent. Mating Connectors: Plastic: Amphenol P/N 850-57F-30500-20 Metal Shell: Amphenol P/N 850-57FE-30500-20 Parallel BCD Output Data Bus Width: 42 bits. For weighting, refer to Table 1. Output Type: High-Speed CMOS, buﬀered, (74HCXXX), 0 to 5 volts.
Page 158: Digital Outputs
Range for ”nn” is 00 to 99, and is set us- ing the SETUP menu or RS-232C (refer to Chapter 6 and Appendix C). Setting of 00 disables this function (output re- mains ”high”). * Available only with the Model 1088A/B series clocks.
Page 159 C.12 Option 17: Parallel BCD Output and Second RS-232 Port RS-232C Output Type: CMOS, -12 to +12 volts. Input Type: Standard RS-232C levels. Inputs Available: Receive Data Connector pin 4. Receives data from external device. Re- (“RXD”): quires that JMP3 be set to position “B”. Precludes use of digital signal output 2 or parallel data bit 27.
Page 160: Option 17 Connector Pin Designation
Options List C.12.5 Option 17 Connector Pin Designation PinNo: BCD Mode Parallel Data Mode RS-232C Function/Bit Weighting: Function: Function Ground Ground Ground 1 PPS output Data Bit 47 Output 4 (Dig. only) Data Bit 45 Output 2 (Dig./An.) Data Bit 27 Day 200 Data Bit 35 Day 80...
Page 161: Option 17 Output Connector
C.12 Option 17: Parallel BCD Output and Second RS-232 Port 40 Sec. Data Bit 18 10 Sec. Data Bit 16 4 Sec. Data Bit 14 1 Sec. Data Bit 12 400 mS Data Bit 10 100 mS Data Bit 8 40 mS Data Bit 6 10 mS...
Page 162: Conﬁguration
Options List C.12.6 Conﬁguration General Case Removal To change the conﬁguration of Option 17, the top cover of the instrument must be removed. Turn oﬀ the instrument, and disconnect the power cord. Using a T-25 driver, remove the four screws holding the cover (and rack mount ears, if used) in place, and lift the cover oﬀ.
Page 163 C.12 Option 17: Parallel BCD Output and Second RS-232 Port Parallel Data Output Mode Full operation in the parallel data output mode utilizes all 50 contacts of the output connector. However, use of any combination of digital signal outputs or analog signal outputs, or RS-232C will reduce the number of data bits available by up to four (data bits 19, 27, 44, and 45).
Page 164 Options List Analog Signal Outputs The two analog signal outputs can be individually enabled and conﬁgured, using the following steps: To enable analog signal output number 1, set jumper JMP4 to position ”B”. This setting also eliminates the possibility of having parallel data bit 44, digital signal output number 3. To select the type of signal for analog output 1, remove the jumper from jumper strip JMP9 (which is no longer active, since it corresponds to digital signal output number 3), and place it on jumper strip JMP8 in either position 1 or 2 (refer to Figure 2).
Page 165: Option 17 Output Jumper Settings
C.12 Option 17: Parallel BCD Output and Second RS-232 Port Figure C.11: Option 17 Output Jumper Settings...
Page 166: Option 17 Board Layout And Jumper Locations
Options List Figure C.12: Option 17 Board Layout and Jumper Locations...
Page 167: Option 17A Second Rs-232 Interface
C.13 Option 17A Second RS-232 Interface C.13 Option 17A Second RS-232 Interface C.13.1 General Description Option 17A for the Model 1088B adds a second RS-232C port, allowing communications and control via a 9-pin connector on the rear panel. This document provides speciﬁcations and instructions for installing this option in the Model 1088B Satellite-Controlled Clock.
Page 168: Option 17A Firmware Setup
Options 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: Installation
C.13 Option 17A Second RS-232 Interface C.13.7 Installation Physical Installation Option 17A may be installed in a Model 1088B Satellite-Controlled Clock by performing the fol- lowing steps: 1. Disconnect the power source from the instrument. 2. Using a T-25 torx driver (or large slot screwdriver), remove the four screws holding the instrument top cover in place.
Page 170 Options List 4. The display will now indicate the status of Option Slot B. Press the UP or DOWN keys until the display reads: OPTION SLOT 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.
Page 171: Option 18: Irig-B Bus Distribution, Fault Monitor And 2Nd Rs-232 Port
C.14 Option 18: IRIG-B BUS Distribution, Fault Monitor and 2nd RS-232 Port C.14 Option 18: IRIG-B BUS Distribution, Fault Monitor and 2nd RS-232 Port C.14.1 General Description Option 18 for the Model 1088B adds several capabilities to the clock, which are often used in systems applications.
Page 172: Discussion - Irig-B Distribution System
Options List Redundant Clock Control Interface Interconnect: Using Arbiter Systems P/N CA0017200 cable assembly. Communications: Uses RS-232 port and two dedicated hardware lines. Relays Two, form-C (SPDT), fail-safe (in faulted position with power oﬀ). Contact Rating: 130 Vdc at 0.3 A; 24 Vdc at 1 A.
Page 173 C.14 Option 18: IRIG-B BUS Distribution, Fault Monitor and 2nd RS-232 Port The Model 10882A tap is used to provide a decoupled, isolated output signal to your system loads. The source impedance of this tap is approximately 600 ohms, and it will provide an open-circuit signal level of 6.4 to 11 Vpp, depending on overall system loading and distance from the clock mainframe.
Page 174 Options List Since all of the components which pass dc current are eﬀectively in series as far as the dc current is concerned, the resistances can simply be summed up. If the total is less than 500 ohms, proper operation is ensured. The cable resistance is 43 ohms/km (13 ohms/Mft.) for the dc monitor current.
Page 175: Option 18 Firmware Setup
C.14 Option 18: IRIG-B BUS Distribution, Fault Monitor and 2nd RS-232 Port C.14.4 Option 18 Firmware Setup Figure C.14: Option 18 Firmware Setup...
Page 176: Typical Network Conﬁguration
Options List C.14.5 Typical Network Conﬁguration Figure C.15: Option 18 Network Conﬁguration...
Page 177: Option 18 Component Wiring Diagrams
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...
Page 178: Option 18 Setup
Options List Output Signal Enable and Conﬁguration When jumper JMP17 on the main clock board is set properly, the digital outputs of that clock are controlled by the redundant-control interface. The status of the drivers is indicated by the ’On Line’ LED annunciator on the clock front panel. Refer to paragraphs 3.2 through 3.3.4 of the 1088B Operation manual if it should be necessary to modify the jumper settings;...
Page 179 C.14 Option 18: IRIG-B BUS Distribution, Fault Monitor and 2nd RS-232 Port Option 18, except to convert between redundant and normal operation as regards the output-enable control for the clock digital output drivers. If you need to change this setting, refer to paragraph 3.3 of the 1088B Operation Manual for instructions.
Page 180 Options List Terminal Strip Pinout Pin 1 is the leftmost pin, viewing the panel from the rear. Pin 9 is the rightmost. Three mating connectors (three pins each), Arbiter Systems part number CN0019203A, are included with the unit. Pin 1...
Page 181: Option 19: Model 1088B Fault Relay
C.15 Option 19: Model 1088B Fault Relay C.15 Option 19: Model 1088B Fault Relay C.15.1 General Description Option 19 for the Model 1088B Satellite-Controlled Clock incorporates a fail-safe single-pole, double-throw (SPDT) relay into the Out-of-Lock function already available in the standard in- strument.
Page 182: Option 19 Firmware Setup
Options List C.15.5 Option 19 Firmware Setup There is no setup in ﬁrmware for this option. C.15.6 Connections All connections to the rear-panel terminal strip should be made using spade lugs or ring lugs suitable for use with #6 screws. Refer to Figure C.17 and the speciﬁcations given above for terminal assignments.
Page 183: Option 19 Relay Circuit Without Resistor
C.15 Option 19: Model 1088B Fault Relay Special Note In some applications, the fault relay may be required to switch into a capacitive load. An example would be an input to a substation DFR or SER, in which a capacitor is placed across the input terminals for surge or noise suppression (see schematic below).
Page 184: Option 19 Relay Relay Board With Resistor
Options List 1. Disconnect the input power to the Model 1088B. 2. Using a T-25 torx driver (or a ﬂat-blade screwdriver), remove the four screws securing the top cover of the instrument, and remove the cover. 3. Locate the Option 19 terminal strip assembly. Using a T-10 torx driver, remove the two screws holding the assembly to the main chassis.
Page 185: Option 20A: Four Fiber Optic Outputs
The optical signal is ON whenever the selected logic signal is HI. Transmitter bandwidth is com- patible with all available logic signals. Option 20A may be installed in either Slot A or B of the standard Model 1088A/B clock. Output Enable (JMP1) This jumper is used at the factory for setting the output enable for the optical transmitters.
Page 186 1, 2, 3 – – 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: Option 20A Jumper Locations
C.16 Option 20A: Four Fiber Optic Outputs Figure C.22: Option 20A Jumper Locations...
Page 188: Option 23, Comtrade Sample Rate Generator
Options List C.17 Option 23, COMTRADE Sample Rate Generator C.17.1 General Description When equipped with the Option 23 COMTRADE Sample Rate Generator, the Satellite-Controlled Clock generates any one of the 48 standard sampling rates for waveform digitization in 50 or 60 Hz systems which are deﬁned in IEEE Standard C37.111-1991, Data Exchange (COMTRADE) for Power Systems.
Page 189: Speciﬁcations
C.17 Option 23, COMTRADE Sample Rate Generator C.17.4 Speciﬁcations Sampling Rates Samples/cycle for 60 Hz for 50 Hz 23040 19200 11520 9600 7680 6400 5760 4800 3840 3200 2880 2400 1920 1600 1440 1200 Table C.7: Option 23, Sample Rates, f = 384 base Samples/cycle...
Page 190: Performance
Setup Menu The SETUP menu allows the user to modify internal 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.
Page 191: Option 23, Front Panel Setup
C.17 Option 23, COMTRADE Sample Rate Generator C.17.9 Option 23, Front Panel Setup The information provided on this page should help you to conﬁgure the Option 23 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.
Page 192: C.17.10Changing Hardware Settings Via Internal Jumpers
Options List C.17.10 Changing Hardware Settings via Internal Jumpers It is necessary to set a jumper in order to assign the output signal to a speciﬁc I/O connector. The following paragraphs describe the procedure for setting these jumpers. Cover Removal To change the I/O conﬁguration of the rear-panel connectors, the top cover of the instrument must be removed.
Page 193 C.17 Option 23, COMTRADE Sample Rate Generator Output Signal Output Function Output Mode IRIG-B Modulated, 10 Vpp Deviation ( 5 V) IRIG-B IRIG-E IRIG-H 10 MPPS 5 MPPS 1 MPPS 100 kPPS 10 kPPS 1 kPPS 100 PPS 60 PPS 50 PPS 10 PPS IRIG-D/1 PPM...
Page 194: Option 23 Internal Jumper Setup
Options List Figure C.24: Option 23 Internal Jumper Setup...
Page 195: Option 27: 8-Channel High Drive
C.18 Option 27: 8-Channel High Drive C.18 Option 27: 8-Channel High Drive C.18.1 General Description Option 27 provides eight independent, IRIG-B buﬀered outputs, each capable of driving multiple loads. Outputs are short circuit and surge protected. Each output is individually conﬁgurable for either modulated or unmodulated IRIG-B signals via jumper settings as illustrated in Figure C.25.
Page 196: Option 27 Jumper Locations
Options List Figure C.25: Option 27 Jumper Locations...
Page 197: Output Load And Loop Example - Unmodulated Irig-B
C.18 Option 27: 8-Channel High Drive C.18.4 Output Load and Loop Example – Unmodulated IRIG-B When designing circuits for connection to the output bus, several factors must be considered. 1. Loop Resistance 2. Type and quantity of loads connected 3. Maximum loop distance desired Table C.10 provides a matrix of these factors using the Schweitzer relay(s) as the output load(s).
Page 198: Connecting Load(S) To Output Bus
Options List C.18.5 Connecting Load(s) to Output Bus The following example illustrates use of diﬀerent types of SEL relays connected to the output bus. Total Load Current: 250 mA (peak) per driver or less. Note 1: Shielding is optional. However, if shielding is used, connect drain wire at source end of cable to a local surge ground.
Page 199: Output Loading (Modulated Irig-B)
AGC ampliﬁer, providing tolerance for signal level variations. Consequently, modulated IRIG-B loads may be connected with greater ease; Arbiter Systems rec- ommends that your simply calculate the eﬀective parallel load impedance of the parallel-connected loads.
Page 200: Option 28: Time, Frequency And Phase Monitor
C.19.1 General Description This document describes Option 28 Power System Time, Frequency, and Phase Monitor, which is used in the Arbiter Systems line of standard Satellite-Controlled Clocks. C.19.2 Discussion Option 28 provides the clock with the ability to accept either a 50Hz or 60Hz, 30-300 Vrms input signal and measure the instantaneous phase, magnitude and frequency of the fundamental compo- nent while rejecting the eﬀects of harmonics, noise and DC oﬀsets.
Page 201: Calibration
C.19 Option 28: Time, Frequency and Phase Monitor Using RS-232C Port To set up Option 28 using the RS-232C port, please follow the guidelines in Section 9.2.13 on page 90. Viewing Option 28 Information View the deviations on the front panel display as follows: 1.
Page 202: Phase Calibration
1.0, and is multiplied by the measured result to generate the displayed value. If an accurate ac source at 50 or 60 Hz is available (for example, the Arbiter Systems, Inc. Model 1040C Panel Meter Calibrator), the error (for boards with preﬁx 97420) can be measured and the correction factor entered as described.
Page 203: Option 28 Firmware Setup Procedure
C.19 Option 28: Time, Frequency and Phase Monitor C.19.8 Option 28 Firmware Setup Procedure Figure C.26: Option 28 Firmware Setup Procedure...
Page 204: Option 28-Speciﬁc Rs-232 Commands
Options List C.19.9 Option 28–Speciﬁc RS-232 Commands The following symbols and syntax are used throughout the RS-232 Commands listing and are repeated here for emphasis: Shorthand for Carriage–Return, Line–Feed. “A” Channel A. “B” Channel B. “U” UTC Time, Channel A (or B). “L”...
Page 205: C.19.10Option 28 Commands
C.19 Option 28: Time, Frequency and Phase Monitor C.19.10 Option 28 Commands Return System Frequency Command: FS “FS” returns Option 28 system frequency. Response: SS ﬀ.ﬀf Where: SS = UTC seconds ﬀ.ﬀf = frequency Return System Frequency Deviation Command: FD “FD”...
Page 206 <BEL> character is transmitted on time. When properly conﬁgured, the Vorne display updates simultaneously upon receipt of the ﬁrst bit of the <BEL> character. Refer to Arbiter Systems Application Note 103 for more information. Response:...
Page 207 C.19 Option 28: Time, Frequency and Phase Monitor 89nnn.nn System Magnitude 55ddd Day of Year <BEL> <BEL> = hex 07 The decimal points shown above are not actually transmitted in the data stream, but their position is implied. The displays are conﬁgured to show the decimal point in this position. *Time Deviation is output in two formats in the same data stream: 33 s.ss and 34 sss.sss.
Page 208 Options List Start Broadcast Mode–ASCII Command: B7, O7 “B7” conﬁgures the Standard RS-232 broadcast mode to send Time, Frequency, and Phase Devi- ation, once per second, in ASCII format. “O7” conﬁgures the Option RS-232 broadcast mode to send Time, Frequency and Phase Deviation, once per second, in ASCII format. Response: broadcast mode, UTC: mm/dd/yyyy hh:mm:ssU ss +f.ﬀf +t.tttt ppp.pp vvv.vv...
Page 209 C.19 Option 28: Time, Frequency and Phase Monitor Set Voltage Amplitude Correction Command: v:kRV “v:kRV” sets the system voltage amplitude correction. Response: Where: v = Voltage correction per unit with 1.000000 equal to no correction. k = Security Key (e.g. 1088) Return Time, Frequency, Phase Deviation with UTC Time Command: nPD “nPD”...
Page 210: Option 29: Four Additional Outputs; Dry Contacts; +25/50 Vdc
Options List C.20 Option 29: Four Additional Outputs; Dry Contacts; +25/50 C.20.1 General Description This document describes Option 29: Four Additional Outputs With Dry Contact and +25/50 VDC. Option 29 includes six conﬁgurable outputs. Four are standard, 5V CMOS outputs; two are Aromat AQV210E solid-state relays (SSRs).
Page 211 C.20 Option 29: Four Additional Outputs; Dry Contacts; +25/50 Vdc Solid State Relay Output, continued Power Supply: Individually conﬁgurable for 0 VDC, +25 VDC, or +50 VDC. Available Signals: 1 PPH, 1 PPM, 1 PPS, Programmable Pulse, Locked and Out of Lock. Pulse Width: Individually conﬁgurable for a ﬁxed, 50-ms pulse, or the de- fault width of pulse provided by the clock mainframe.
Page 212: Firmware Conﬁguration
Options List Function Setup Jumpers–Default Settings 1 (Rightmost) CMOS Output 1 JMP4: Signal Select Default = 1 PPH Ground – CMOS Output 2 JMP3: Signal Select Default = 1 PPM Ground – CMOS Output 3 JMP2: Signal Select Default = Prog. Pulse Ground –...
Page 213: Output Jumper Setting Changes
C.20 Option 29: Four Additional Outputs; Dry Contacts; +25/50 Vdc C.20.4 Output Jumper Setting Changes 1. Set Line Power switch to OFF position (if equipped). Disconnect the power cord from rear- panel. 2. Remove rack-mount ears (if equipped) and remove top cover using a T25 Torx driver (4 screws).
Page 214: Option 29 Connector Signal Locations
Options List Figure C.28: Option 29 Connector Signal Locations...
Page 215: Option 32/33: Ntp Server - Obsoleted By Opt34
Option 32 is a single internal Network Time Protocol (NTP) Server (Port 1), and used in the Arbiter Systems line of 19-inch, rack mount Satellite-Controlled Clocks. Option 33 is very similar to Option 32, however it has two identical and independent NTP servers (Port 1 and Port 2). Both options come with a six-foot phone cable and RJ-11 to DB-9F connector for connecting to the RS-232, or NTP Setup, port.
Page 216 Options List RS-232, NTP Setup The RS-232 port uses an RJ-11 style connector, which is conﬁgured as a DTE device with the following pin out: GND = Pin 2 TXD = Pin 3 RXD = Pin 4 GND = Pin 5 10/100 Base-T Option 32/33 uses the standard 10/100 base-T connection for connecting to an Ethernet.
Page 217: Jumper Settings
C.21 Option 32/33: NTP Server – Obsoleted by Opt34 C.21.2 Jumper Settings. There are ﬁve jumpers on Option 32/33. Jumper 1 (JMP1) is determined by the clock model; Jumper 2 (JMP2) determines board operation with JMP3 and JMP4; Jumper 3 (JMP3) determines board operation with JMP2 and JMP4;...
Page 218: Firmware Conﬁguration
Options List C.21.3 Firmware Conﬁguration. Setup for Option 32/33 operation is in two parts: (1) setting the correct option number (i.e. 32 or 33) via the front panel, or through the RS-232 port; (2) conﬁguring the NTP server(s) via the the individual Ethernet port, or option RS-232 port.
Page 219 C.21 Option 32/33: NTP Server – Obsoleted by Opt34 c) Open a telnet connection to port 9999 and set all required parameters. telnet 192.168.0.232 9999 NOTE: The temporary IP address is reverted after every power reset of the NTS. Be sure to enter the conﬁguration and store the parameters to make the changes permanent.
Page 220: General Conﬁguration
Options List lowercase ‘x’ characters to the NTP Server. These characters must all be sent within one second to start conﬁguration mode. NOTE: The easiest way to enter conﬁguration mode is to hold down the ‘x’ key at the terminal (emulation) and then powering the NTP Server.
Page 221 C.21 Option 32/33: NTP Server – Obsoleted by Opt34 are ﬁxed to the values deﬁned in RFC-37 and RFC-123 respectively. If the authentication option 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;...
Page 222: Option 34: Ntp/Ptp Server
This option provides Network Time Protocol (NTP) and Precision Time Protocol (PTP) servers in the Arbiter Model 1088A/B series GPS clocks. These instructions will assist you in the setup and operation of the Option 34. Conﬁgure this option using the Web Interface or the SSH Console.
Page 223: Option 34 Setup
Important pins for a null-modem cable are indicated in Table C.15 below. 1. Open a terminal program at the same baud rate as the clock. For the Model 1088A/B, the default port settings should be 115,200 baud, 8 data bits, no parity and 1 stop bit.
Page 224 Receive Ground Table C.15: Null-Modem Cable Connections 3. For Model 1088A/B type “1,11,1088XI” (without quotes) and the cursor should jump down to the next line without displaying a question mark. 4. Option 34 should now be selected in your clock.
Page 225 C.22 Option 34: NTP/PTP Server After the Clock and Server Have Stabilized After the GPS clock and the Option 34 have stabilized, press the SYSTEM button to view server status, link status and port addresses (IP and MAC address). Server Status NTP: SYNCHRONIZED PTP: RUNNING Link Status: indicates whether the network connection is good or bad.
Page 226: 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 connected to a network.
Page 227: Startup Page
C.22 Option 34: NTP/PTP Server Viewing the IP Address on the Front Panel The front panel will indicate the IP address of each port provided a network cable is connected. Press the SYSTEM key until reaching OPTION STATUS OPTION 34 and press the ENTER key. Use the UP/DOWN keys to scroll to any network-related information, such as the connection (Link) status, the IP address or hardware address.
Page 228: System Conﬁgure Page
Options List System Conﬁgure Page Figure C.32 illustrates the System conﬁguration page for the Option 34. It includes conﬁguring for HTTP or HTTPS (see next section), enabling session time outs for the web interface and SSH Console, responding to ping requests and setting your time zone. Time zone setting only changes the time as it is read on the web interface under the Clock selection.
Page 229: Conﬁgure Https
You can either purchase one or generate one yourself. A discussion on generating a PEM ﬁle using a self-signed certiﬁcate in Linux may be downloaded from the Arbiter Systems website on the relevant product page. This method also seems to work ﬁne in the Mac OS X environment.
Page 230: Conﬁgure System Password
Options List System Conﬁgure Password To conﬁgure the system password follow these instructions. From Figure C.32, select the Password tab. Figure C.34 shows where to conﬁgure the System password. In the System page, click the Password tab and ﬁll in the current and new password. Click the Apply button. Password char- acters must be from ASCII 33 to ASCII 126, and passwords may be from 1 to 16 characters in length.
Page 231: Rebooting The System
C.22 Option 34: NTP/PTP Server System Reboot To reboot the Option 34 follow these instructions. From Figure C.32 select the Reboot tab. Fig- ure C.36 shows only one button to click to reboot the system. Be aware that rebooting the system will disconnect all active network sessions with the Option 34.
Page 232: Conﬁgure Network Settings
Options List Conﬁgure Network Settings To conﬁgure the network settings of your Option 34 follow these instructions. Figure C.38 illustrates the conﬁgurable network functions on Option 34. Notice that the Ethernet Port 1 Mode is selected as DHCP and Ethernet Port 2 Mode is selected as Static. When selecting Static, the additional settings (i.e.
Page 233: View Operation
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. Figure C.41: View SNMP Operation...
Page 234: Snmp Conﬁguration Page
Options List Conﬁgure SNMP Follow these instructions to conﬁgure SNMP operation in the Option 34. Figure C.42 illustrates the diﬀerent selections for enabling the service and selecting traps (notiﬁcations). For deﬁnitions of SNMP “Conﬁgure” selections, see Section C.22.5. Figure C.42: SNMP Conﬁguration Page Checking the box enables the speciﬁc item;...
Page 235: Ptp Status Page
C.22 Option 34: NTP/PTP Server PTP Status Page To view the PTP service, select PTP tab on the left and the Status tab above. “+35” is the Current UTC/PTP Oﬀset in seconds. Note that PTP time is referenced to International Atomic Time (TAI, from the French name Temps atomique international ).
Page 236: Ptp Conﬁguration Page
Options List PTP Conﬁguration To conﬁgure PTP follow these instructions. Figure C.44 illustrates the PTP conﬁguration page. Choices for the Delay Mechanism include either P2P (Peer to Peer) or E2E (End to End). Protocol choices include UDP IPv4, UDP IPv6 or Layer 2. Figure C.44 shows the Advanced settings, which can be hidden using the Hide Advanced button.
Page 237 C.22 Option 34: NTP/PTP Server PTP Terms Domain: a collection of one or more PTP subdomains. A subdomain is a logical grouping of 1588 clocks that synchronize to each other using the PTP protocol, but that are not necessarily synchronized to PTP clocks in another PTP subdomain. Subdomains provide a way of implementing disjoint sets of clocks, sharing a common network, but maintaining independent synchronization within each set.
Page 238: Ntp Status Page
Options List NTP Status Page To view the NTP service, select NTP tab on the left and the Status tab above. Figure C.45 illustrates the status of NTP. Figure C.45: NTP Status Page NTP Terms NTP: either running or stopped. Root Dispersion: (or dispersion) represents the maximum error of the local clock relative to the reference clock.
Page 239: Ntp Conﬁgure Page
C.22 Option 34: NTP/PTP Server NTP Conﬁgure To conﬁgure NTP follow these instructions. Figure C.46 illustrates the NTP conﬁguration page. Choices for the NTP Version include Versions 1, 2, 3 and 4. Multicast and Broadcast addresses may be typed in the assigned boxes. Figure C.46: NTP Conﬁgure Page...
Page 240: Ntp Authentication Page
Therefore, you must select the “Trusted” check box on the authentication page. Option 34 Support Pages Use this page, with Figure C.48, to contact Arbiter Systems and for version support.
Page 241: Contact And Version Information
C.22 Option 34: NTP/PTP Server Option 34 Network Time Module Contact Version Upldate Log Arbiter Systems, Inc. SNMP 1324 Vendels Circle, Suite 121 Clock Paso Robles, CA 93446 Network System 805-237-3831 Support 800-321-3831 (US, Canada, Mexico only) Mon-Thu 7:00am - 5:30pm Pacific Time www.arbiter.com...
Page 242: Ssh Console Interface
C.22.4 SSH Console Interface These instructions cover the setup and maintenance of the 1088A/B using the Secure Shell (SSH) Console Interface. Secure Shell is an alternative to using the Telnet protocol, and used for securely gaining access to a remote system like the optional Option 34. Conﬁgure all settings through one of the Ethernet ports.
Page 243: System Conﬁgure Page Using Ssh
C.22 Option 34: NTP/PTP Server Useful Keys for Console Navigation Arrow Keys – navigate up, down, left, and right Enter – accept the current selection SPACE – accept the current selection except in edit ﬁelds (same as Enter) – cancel an edit/change Q or q –...
Page 244: Conﬁgure System Password Using Ssh
Options List Conﬁgure Session Timeouts From the System Conﬁgure page, use the cursor keys to navigate to the speciﬁc timeout feature (either Web Interface or Console Interface) and press ENTER to select. Press ENTER again to deselect. Conﬁgure Password Using the cursor keys navigate to the System Password page (Figure C.51). In the System/Password page, ﬁll in the old and new password.
Page 245: Checking Network Status Using Ssh
C.22 Option 34: NTP/PTP Server Network Settings and Information To view the network status of your Option 34 using the SSH Console follow these instructions. Use the cursor keys to navigate to Network Status (Figure C.52), which should display the network status for both Ethernet ports, 1 and 2.
Page 246: Conﬁgure Network Settings Using Ssh
Options List Conﬁgure Network Settings To conﬁgure the network settings of your Option 34 follow these instructions. Figure C.53 illustrates the conﬁgurable network functions on the Option 34. Notice that the Ethernet Port 1 Mode is selected as DHCP and Ethernet Port 2 Mode is selected as Static. When selecting Static, the additional settings (i.e.
Page 247: View Operation Using Ssh
C.22 Option 34: NTP/PTP Server GPS Status and Time Quality This web interface page displays basic GPS satellite information and time quality. Select this page to view Time Quality, Satellite information and Leap Seconds accumulated and pending, as shown in Figure C.54. 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...
Page 248: Ptp Status Page Using Ssh
Options List Figure C.56: PTP Status Page Using SSH Conﬁgure PTP Service Please use the Web Interface 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.
Page 249: Ntp Conﬁgure Page Using Ssh
C.22 Option 34: NTP/PTP Server NTP Terms NTP: reveals that it is either running or stopped. Root Dispersion: (or dispersion) represents the maximum error of the local clock relative to the reference clock. Oﬀset: (or clock oﬀset) represents the amount to adjust the local clock to bring it into correspondence with the reference clock.
Page 250: Ntp Authentication Page Using Ssh
Options List NTP Authentication Authentication involves advanced conﬁguration for NTP, and used to prevent tampering with the timestamps on the logs generated by devices. You can conﬁgure a device to authenticate the time sources to which the local clock is synchronized. When you enable NTP authentication, the device synchronizes to a time source only if the source carries one of the authentication keys speciﬁed by the ntp trusted-key command.
Page 251: Contact And Version Information Pages Using Ssh
C.22 Option 34: NTP/PTP Server Option 34 Support Pages Use this page, with Figure C.60, to contact Arbiter Systems and for version support. Figure C.60: Contact and Version Information Pages Using SSH...
Page 252: Snmp Support
Model 1088A/B and not conﬁgure settings. See Section C.22.5 for a print out of the current MIB table. To obtain a soft copy of the MIB table for the Model 1088A/B, you may download it from the Arbiter Systems website at the following address: www.arbiter.com.
Page 253 C.22 Option 34: NTP/PTP Server which shows that both the SNMP service and traps are enabled. To view the SNMP Status screen, log in to the Option 34 with the web interface and select the SNMP tab on the left. Note that SNMP conﬁguration is available only through the web interface.
Page 254 Also, the SNMP 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.
Page 255 C.22 Option 34: NTP/PTP Server systrap OBJECT IDENTIFIER ::= sys 5 ntp MODULE-IDENTITY LAST-UPDATED “201205230000Z” ORGANIZATION “Arbiter Systems” CONTACT-INFO “ Arbiter Systems, Inc. Paso Robles, CA Tel: +1 805 237 3831” DESCRIPTION “This MIB module deﬁnes a MIB which provides mechanisms to monitor and control an NTP server.”...
Page 256 Options List MAX-ACCESS read-only STATUS current DESCRIPTION “The product family on which this agent is running.” device 2 sysDevModel OBJECT-TYPE SYNTAX OCTET STRING MAX-ACCESS read-only STATUS current DESCRIPTION “The device model.” device 3 sysDevSerialNumber OBJECT-TYPE SYNTAX OCTET STRING MAX-ACCESS read-only STATUS current DESCRIPTION “The device model.”...
Page 257 C.22 Option 34: NTP/PTP Server DESCRIPTION “The device model.” version 4 sysDevVerClock OBJECT-TYPE SYNTAX OCTET STRING MAX-ACCESS read-only STATUS current DESCRIPTION “The device model.” version 5 sysDevVerNTP OBJECT-TYPE SYNTAX OCTET STRING MAX-ACCESS read-only STATUS current DESCRIPTION “The device model.” version 6 sysDevVerPTP OBJECT-TYPE SYNTAX OCTET STRING MAX-ACCESS read-only...
Page 258 Options List SYNTAX MilliUnits MAX-ACCESS read-only STATUS current DESCRIPTION “The current temperature of the device.” diag 2 sysDiagTimeQuality OBJECT-TYPE SYNTAX OCTET STRING MAX-ACCESS read-only STATUS current DESCRIPTION “Clock time quality status.” diag 3 sysDiagNtpStatus OBJECT-TYPE SYNTAX OCTET STRING MAX-ACCESS read-only STATUS current DESCRIPTION “The operational status of NTP”...
Page 259 C.22 Option 34: NTP/PTP Server STATUS current DESCRIPTION “Number of GPS Satellites tracked by receiver 1” rec1 4 systrapPowerUp OBJECT-TYPE SYNTAX OCTET STRING MAX-ACCESS accessible-for-notify STATUS current DESCRIPTION “System powering up” systrap 1 systrapShutDown OBJECT-TYPE SYNTAX OCTET STRING MAX-ACCESS accessible-for-notify STATUS current DESCRIPTION “System shutting down”...
Page 260 Options List DESCRIPTION “ String identiﬁer for the NTP System Group.” ntpsys 1 ntpSysClock OBJECT-TYPE SYNTAX OCTET STRING MAX-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.”...
Page 261 C.22 Option 34: NTP/PTP Server DESCRIPTION “” ntpsys 7 ntpSysClkWander OBJECT-TYPE SYNTAX MilliUnits MAX-ACCESS read-only STATUS current DESCRIPTION “” ntpsys 8 ntpSysRootDelay OBJECT-TYPE SYNTAX MilliUnits MAX-ACCESS read-only STATUS current DESCRIPTION “the total roundtrip delay to the primary reference source at the root of the synchronization subnet, in seconds”...
Page 262 Options List ntpsys 12 ntpSysPrecision OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-only STATUS current DESCRIPTION “signed integer indicating the precision of the various clocks, in seconds to the nearest power of two.” ntpsys 13 ntpSysRefTime OBJECT-TYPE SYNTAX OCTET STRING MAX-ACCESS read-only STATUS current DESCRIPTION “...
Page 263 C.22 Option 34: NTP/PTP Server ntptrap 4 NTP MIB Object Deﬁnitions ntpSysLeap: two-bit code warning of an impending leap second to be inserted in the NTP timescale. ntpSysStratum: indicating the stratum of the local clock. 0, unspeciﬁed; 1, primary refer- ence (e.g., calibrated atomic clock, radio clock);...
Page 264: Option 34 Speciﬁcations
Options List C.22.6 Option 34 Speciﬁcations Performance NTP: < 100 microseconds, depending on network load and clock accuracy PTP: < 100 microseconds (software) < 1 microsecond with hardware assist Interface Network Two Ethernet (Version 2.0/IEEE 802.3) 10/100BT or multimode SSF modules Protocols NTP, SNTP, PTP (IEEE 1588 -2008), UDP, ICMP, SNMP, TCP, SSH,...
Page 265: Time Zone Format Strings
C.22 Option 34: NTP/PTP Server C.22.7 Time Zone Format Strings Table C.17 lists some common time zone strings as discussed on page 209. These strings are meant to be installed in the Option 34 to conﬁgure the local time indicated as in the Web Interface, Clock screen.
Page 266: Option 36: Four Conﬁgurable Outputs
C.23.1 General Description Option 36 adds four rear-panel outputs, which may be conﬁgured to any available signal in the 1088A/B series clocks. The conﬁguration of the four outputs can be changed at any time via internal jumper settings. C.23.2 Speciﬁcations...
Page 267 JMP9 JMP10 JMP11 JMP12 On the 1088A/B two signals are deﬁned as analog: modulated IRIG-B and 5 V deviation. On all Mode jumpers, JMP9 – JMP12, analog signals use position B. Digital signals, like unmodulated IRIG-B, use position A. Clock Model Selection Jumpers JMP13 and JMP14 select the clock model in which Option 36 is mounted.
Page 268: Option 36 Jumper Conﬁguration
Options List 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. Figure C.62: IRIG-B Waveforms and 1 Pulse Per Second...
Page 269 C.23 Option 36: Four Conﬁgurable Outputs Output Signal Function Select Jumper Mode Select Jumper IRIG-B Modulated Deviation IRIG-B Unmodulated IRIG-E IRIG-H 10 MPPS 5 MPPS 1 MPPS 100 kPPS 10 kPPS 1 kPPS 100 PPS 60 PPS 50 PPS 10 PPS IRIG-D/1 PPM 1 PPM 1 PPS...
Page 270 Options List...
Page 271: D Ce Mark Certiﬁcation
Appendix D CE Mark Certiﬁcation Introduction On the following pages contain the individual CE Mark Certiﬁcations for models covered in this manual. This includes Model 1088B.
Page 272 Directives: 89/336/EEC Electromagnetic Compatibility 73/23/ EEC Low Voltage Safety Model Number(s): 1088B GPS Satellite-Controlled Clock Manufacturer: Arbiter Systems, Inc. 1324 Vendels Circle, Suite 121 Paso Robles, CA 93446 Harmonized EN55011 Class A, Radiated and Conducted Emissions Standard EN50082-1 Generic Immunity, Part 1...
Page 273: E Statement Of Compliance
Appendix E Statement of Compliance Introduction The following page is a statement of compliance that includes Model 1088B.
Page 274 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 speciﬁcations for...
Page 275 Index 1-PPS distance, 61 description, 60 physical protection, 24 timing output, 61 accessories user-supplied, 25 antenna & cable, 24 wire losses, 63 included, 1 CE Compliance Notice, 251 altitude, see elevation display CE mark certiﬁcations, 251 ampliﬁer comm ports, 69 antenna cable, 24 command key analog drivers, 58...
Page 276 INDEX relay contacts, 11 making changes, 207 serial communications, 10 IRIG-B timing output, 11 IEEE 1344 description, 60 contact information, ii initial indication, 96 copyright, v modulated cordsets voltage matching, 63 IED-320 power inlet connector, 14 timecode description, 59 crimp tool unmodulated, 60 RG-11, 24 waveform comparison, 60...
Page 277 INDEX Option 02, Battery Backup, 111 serial command Option 03, Four Additional Outputs, 112 antenna delay Option 07, IEC-320 Power Inlet, 127 set, 89 Option 08, 10 60 Vdc Power Inlet, 128 arm event trigger, 76 Option 15A/B, 110–170/110–300 Vdc Power backlight auto, 81 Inlet, 134 backlight oﬀ, 81...
Page 278 INDEX start Broadcast Vorne, 186 Setup menu list, 33 system frequency, 185 signal output system frequency deviation, 185 description, 59 system phase, 185 SNMP, 232 system time, 185 conﬁguration reference, 233 system time deviation, 185 conﬁguring traps, 233 out-of-lock alarm enabling, 233 set time, 89 mib object deﬁnitions, 243...
Page 279 INDEX time zone format strings, 245 timing outputs description, 58 intro, 57 title page, v unpacking the clock, 1 version manual, v warranty, iii web interface, 206 conﬁgure network settings, 212 conﬁgure ntp, 219 conﬁgure password, 210 conﬁgure ptp, 216 conﬁgure snmp, 214 conﬁgure vlan, 212 GPS status, time quality, 213...

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1088b

Arbiter Systems 1088A Operation Manual

1 Unpacking the Clock

2 Front and Rear Panels

3 Connecting Inlet Power, Input and Output Signals

4 GPS Antenna and Cable Information

5 Setting Internal Jumpers

6 The Setup Menus

7 Timing, IRIG-B and Pulses

9 Serial Communication and Command Set

10 Startup and Basic Operation

A Technical Speciﬁcations and Operating Parameters

B Using Surge Arresters

C Options List

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Summary of Contents for Arbiter Systems 1088A