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MODEL 1094B
GPS SUBSTATION CLOCK
OPERATION MANUAL
ARBITER SYSTEMS, INC.
PASO ROBLES, CA 93446
U.S.A.
WWW.ARBITER.COM

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Summary of Contents for Arbiter Systems 1094B

  • Page 1 MODEL 1094B GPS SUBSTATION CLOCK OPERATION MANUAL ARBITER SYSTEMS, INC. PASO ROBLES, CA 93446 U.S.A. WWW.ARBITER.COM...
  • Page 2 What This Manual Covers This manual describes the set up and operation of the Model 1094B GPS Substation Clock. Firmware Dates This version of the manual is written for clocks having firmware dates of 5 December 2011 or later.
  • Page 3 See Contact Information on page ii. Limited Lifetime means that Arbiter Systems will repair or replace the defective component as long as components are available and for no more than five years after the product has been deemed obsolete.
  • Page 5 Serial Communication and Commands Appendix A Technical Details and Specifications Appendix B Using Surge Arresters Appendix C Statement of Compliance Appendix D Switching High Voltage Signal Lines Index Copyright Arbiter Systems Incorporated August 2017. All rights reserved. International copyright secured. PD0036600T...

  • Page 6: Table Of Contents

    3.1.2 Option 07, Connecting Power to the 1094B ....12 3.2 Option 08, 10 to 60 Vdc Power Inlet Module ..... . 12 3.2.1...
  • Page 7 Elevation Display ........32 6.6 Application Software – 1094B Utility ......33 6.6.1...
  • Page 8 viii CONTENTS 6.6.2 Establishing a Serial Connection ......34 6.6.3 Reading Clock Configuration ......36 6.6.4 The System Screen .
  • Page 9 CONTENTS 7.12 Set Event/Deviation ........63 7.12.1 Technical Details of Event/Deviation Timing .
  • Page 10 CONTENTS 10 Serial Communication and Commands 10.1 Introduction ......... 79 10.2 Communication Port Information .
  • Page 11 CONTENTS A.5.10 Annunciators - LEDs ....... . 103 A.6 Physical Specifications ........103 A.6.1 Dimensions .
  • Page 12 6.1 1094B Utility Software, Opening Window ......33 6.2 Connecting with the 1094B ....... . 34 6.3 Windows XP Device Manager –...
  • Page 13 6.13 1094B Version Display Screen ....... 44 6.14 1094B Loader with Opened Firmware File ......46 6.15 Successful Upload of New Firmware .
  • Page 14 List of Tables 2.1 Annunciator LED Definitions ....... 2.2 Fault Indications and Definitions ......2.3 Command Key Definitions .

  • Page 15: 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 1094B is an electronic device and uses static-sensitive components in its 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.

  • Page 16: Unpacking And Locating Accessories

    Attaching Rack-Mount Ears to Clock Each Model 1094B 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 17: Mounting Instructions

    1.5 Mounting Antenna and Antenna Cable 1.4.1 Mounting Instructions 1. Using a Torx T25 driver or large slot screwdriver, remove the four M25 screws attaching the clock cover to the chassis. Use either a Torx T25 driver, or a large slot screwdriver. 2.

  • Page 18: Front And Rear Panels

    Introduction Chapter 2 introduces and identifies the connectors, controls, and displays found on the front and rear panels of the 1094B. Take care to review all of these items prior to connecting cables and configuring the Model 1094B. Front Panel Controls and Indicators The Model 1094B front panel has a two-line by 20-character, backlighted, supertwist Liquid Crystal Display (LCD), four annunciator LED’s, an eight-button keypad and ON-OFF power switch.

  • Page 19: Annunciator Led Definitions

    2.2.2 LCD Display The Model 1094B contains a back-lit, liquid crystal display, which provides a 20-character by 2- line readout that displays instrument time and date, geographical position, event data and status. Using the lower set of keys, the readout is also used to display the current configuration of operation...

  • Page 20: Command Key Definitions

    Front and Rear Panels 2.2.3 Command Key Definitions Control the various functions and configuration of operational parameters using the eight pushbut- ton keys on the front panel. Use the 1094 Utility, or the RS-232 command “m,nFP,” to control the operation of the keypad and display; this includes locking and unlocking the lower row of keys and turning the backlight on or off.

  • Page 21: Rear Panel Identification And Connectors

    2.3.1 Power Inlet To cover a wide range of inlet power sources, the Model 1094B has three optional power supplies. Please examine the paperwork you received with the Model 1094B, to make sure you have correctly identified the inlet connection. Supply types are listed below: Option 07 IEC-320 supply with a range of 86 to 264 Vac, 47 to 440 Hz and 110 to 350 Vdc.

  • Page 22: Antenna Input

    2.3.2 Antenna Input The Model 1094B 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 23: Event Input

    2.3.5 Form C Relay Contacts The Model 1094B has one set of Form C relay contacts that have three contact points: Normally Open (NO), Normally Closed (NC) and Common (COM) as illustrated in Figure 2.9. Contact functions include Fault, Out of Lock or Programmable Pulse A. Fault, or Out-of Lock, relay functions are defined when relay is de-energized (e.g.

  • Page 24: Timing Outputs

    2.3.6 Timing Outputs The Model 1094B has four identical timing outputs, with both 5mm terminals for twisted pair wire and BNC female connectors for coax, to suit a variety of cabling requirements. Viewed from the rear panel, they are labeled Output 1, Output 2, Output 3 and Output 4 from right to left. Both connectors of one output channel may be used simultaneously from the same output channel, being wired in parallel.

  • Page 25: Connecting Inlet Power

    Chapter 3 Connecting Inlet Power To cover a wide range of inlet power sources, the 1094B can be ordered with any one of three different power inlet modules. Each of the power inlet module connectors is illustrated here and also in Chapter 2. Take time to examine the power inlet module connection on your clock to verify that it is correct according to your order.

  • Page 26: Cordsets And Plug Styles For Option 07

    Table 3.1: Available IEC-320 Cordsets by Country 3.1.2 Option 07, Connecting Power to the 1094B Connect the IEC-320 plug to the IEC-320 connector on the 1094B, and then connect the wall plug into the wall socket. Option 08, 10 to 60 Vdc Power Inlet Module This option replaces the standard power supply with one accepting 10 to 60 Vdc (only), <...

  • Page 27: Option 08, Connecting Inlet Power

    3.3 Option 10, 110 to 350 Vdc Terminal Power Strip, Surge Withstand 3.2.1 Option 08, Connecting Inlet Power When wiring station batteries to 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 a label as “+”...

  • Page 28: Replacing Fuses

    Connecting Inlet Power 3.4.1 Replacing Fuses Option 07 (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. Check Figure 3.1 for a fuse location diagram. 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 29: Gps Antenna And Cable Information

    This section should help you with installing the GPS antenna and antenna cable(s) to the 1094B. It should also be a source of information should you need to trouble shoot the antenna cable system.

  • Page 30: Optional Antenna Mounting Kit, P/N As0044600

    flat surface. For complete details on this product request installation instructions for Arbiter Systems GPS Antenna Mounting Kit found on document number PD0024700A. All metallic hardware is stainless steel.

  • Page 31: Antenna Mounting Bracket

    4.1 GPS Antenna Installation Figure 4.2: Antenna Mounting Bracket Figure 4.3: Antenna Mounting with AS0044600...

  • Page 32: Verifying Antenna And Cable Operation

    GPS Antenna and Cable Information Verifying Antenna and Cable Operation Proper antenna and cable operation may easily be verified after installation. If the FAULT LED is ON, indicating that a fault exists, press the STATUS key for a fault message (see Table 2.2). Also, the antenna itself has a two-color Operate LED located at the base of the antenna to signal operating status.

  • Page 33: Using The Gps Surge Arrester

    4.4 Technical Details on GPS, Antennas and Cables 4.3.1 Using the GPS Surge Arrester Before installation, review the documentation on this device found in Appendix B. The AS0094500 surge arrester is weatherproof except for the F connectors, which may be sealed with rubber port seals or GE Silicone II compound.

  • Page 34: Gps Cable Data And Accessory Information

    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 35 4.4 Technical Details on GPS, Antennas and Cables for the type of cable provided with the clock is 75 C (167 F). Exercise care when routing the cable near sources of heat to avoid cable damage. 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 36: Setting Internal Jumpers

    Introduction This section should assist you with identifying and configuring the internal jumpers in the Model 1094B so that all the input and output signals are routed correctly. NOTE: Values in tables marked with an “*” show default positions. The next step after correctly setting the necessary jumpers is to configure the clock settings. To configure using the front panel keys, go to Chapter 7, The Setup Menus.

  • Page 37: List Of Default Jumper Positions And Functions

    NOTE: Values in tables marked with a “*” show the default positions. Configuring Output Jumpers The Model 1094B has four multifunction timing outputs that may be configured independently. To configure any of the output jumpers, follow the steps enumerated below. Table 5.2 organizes the...

  • Page 38: Configuration Notes

    Configuring Relay Mode Jumpers The Model 1094B has one set of Form C relay contacts that may be configured to alarm (or trip) for a Fault, for an Out-Of-Lock condition, or according to the Programmable Pulse A function. By default, the relay is connected to indicate an unlocked condition.

  • Page 39: Relay Contact Specifications

    Dielectric strength measured at 500 V for 1 minute with same polarity. Configuring Communication Port Jumpers The Model 1094B has two communication ports (COM1 and COM2) that can provide both RS- 232C and RS-485 levels. Alternately, these ports may be configured to provide a programmable pulse output and IRIG-B at RS-485 levels.

  • Page 40: Configuring Event Input Jumpers

    Setting Internal Jumpers Configuring Event Input Jumpers The Model 1094B has one Event Input function that has two modes: (1) Event Capture, and (2) 1-PPS Deviation measurement. Events may be recorded from two connection points: (1) the dedicated event input connector, and (2) either COM1 or COM2. Using the dedicated Event Panel connector, you can set the event input voltage level to one of three ranges: 5 to 12 Vdc, 24 to 48 Vdc, or 120 to 240 Vdc.

  • Page 41: Clock Startup And Utility Software

    6.1.1 Clock Time, Startup Mode When the Model 1094B first starts, it will not indicate the correct time until it is locked to the GPS. Pressing the TIME key before the UNLOCKED LED is extinguished will produce the message: TIME NOT AVAILABLE For IRIG-B time, it will begin counting from zero, with the Julian Day also set to zero.

  • Page 42: Front Panel Indication

    Out-of-Lock relay should close. Front Panel Indication 6.2.1 LCD Display Indication at Startup In the startup sequence, the LCD display should indicate similar to the messages shown below. ARBITER SYSTEMS GPS SUBSTATION CLOCK followed by: COPYRIGHT (C) 2009 ARBITER SYSTEMS, INC.

  • Page 43: Status Display Indications

    6.2 Front Panel Indication Status Display GPS RECEIVER STATUS ACQUIRING SATS 6.2.3 Status Display Indications There are three indications when successively pressing the STATUS key. These are as follows: CLOCK STATUS STARTUP* *The second line will change between STARTUP, to UNLOCKED (with time), to LOCKED. as follows: GPS RECEIVER STATUS LOCKED...

  • Page 44: Irig-B Time Data

    SIGMA: 6.2.5 IRIG-B Time Data IRIG-B time is immediately sent out, when the 1094B is powered ON, from any Timing Output port configured for IRIG-B as indicated above. Time will not be accurate until the Stabilized LED glows steadily. Clock Status Display Mode When first applying power to the Model 1094B, the display will indicate several startup messages,...

  • Page 45: Time Of Year Display, Universal Time Coordinated, (Utc)

    6.4 Time Display Modes Where: 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 46: Daylight Saving-Summer Time

    DST/Summertime settings to match the requirements of locations in either Northern or Southern latitudes. The DST/Summertime configuration can be changed through the serial port (1094B Utility software), or through the front panel keypad. Position Display Modes When the clock is first powered ON and acquiring satellites, the only position information available...

  • Page 47: Application Software - 1094B Utility

    Configuring with 1094B Utility Software The following sections illustrate how to use the 1094B Utility software to configure the 1094B. It is not necessary to have the 1094B locked to the GPS while configuring it. Time and position data, however, will not be accurate.

  • Page 48: Establishing A Serial Connection

    , choosing the same baud rate as on the Settings > Baud Rate Model 1094B. To check the baud rate on your Model 1094B, press the SETUP key on the clock; the first menu should state, “SET SERIAL COM 1?”; press SETUP again and the second menu should state “SET SERIAL COM 2?”.

  • Page 49: Windows Xp Device Manager – Identify Com Port

    If you are using a USB-to-Serial adapter, you may want to check which COM port Windows is using. If for some reason 1094B Utility software does not connect with the 1094B, you may want to check it. By using this method, you should be able to verify or reassign the COM Port being used by the USB-to-Serial adapter to an unused number.

  • Page 50: Reading Clock Configuration

    If for some reason you get a message that the 1094B Utility software could not read the clock, make sure to check Settings at the top of the 1094B Utility window to verify (1) you are trying to connect using the correct COM port on your pc, (2) that you are using the correct baud rate, or other settings, and (3) that you have the correct cable(s) connected between the Model 1094B and the pc.

  • Page 51: The System Screen

    6.6 Application Software – 1094B Utility 6.6.4 The System Screen After selecting , or clicking the icon, the 1094B Utility will display the first tab Unit > Read Read information labeled System Figure 6.6: Reading the 1094B, System Screen DEFINITIONS Event Mode: Choose to set the 1-PPS deviation mode;...

  • Page 52: Clearing Events In The 1094B

    ) – see Figure 6.7. Prog Pulse A tab While broadcasting event records, the buffer will continually be overwritten with new data. Therefore, you would not need to use the feature while broadcasting event data. Clear Figure 6.7: Clearing Events in the 1094B...

  • Page 53: The Communication Screen

    COM Port Configuration: Allows for configuring COM Port parameters using this software utility; Sets baud rate, word length, parity and stop bits. 1094B ports do not use flow control. Broadcast Configuration: Set Message Type according to the list of configured broadcast messages.

  • Page 54: The Time Screen

    November. The result is an additional 4 – 5 weeks alloted to DST, depending on the specific year. Since individual countries and regions have their own names, dates and times for the same effect as DST, the 1094B was designed to adjust for all these differences around the earth.

  • Page 55: The Irig-B Screen

    6.6 Application Software – 1094B Utility 6.6.7 The IRIG-B Screen Select the tab to set up how the 1094B sends out IRIG-B to your connected relays and IRIG IED’s. Channel A refers to the two specific connectors labeled (unmodulated) and...

  • Page 56: The Programmable Pulse A Screen

    6.6.8 The Programmable Pulse A Screen Select the tab to configure how the 1094B sends pulses out Channel A. There are two Prog. Pulse A modes and seven pulse types from which to choose. Figure 6.11: Programmable Pulse A Setup Screen DEFINITIONS Modes: (1) On and Off.

  • Page 57: The Programmable Pulse B Screen

    The Programmable Pulse B Screen Select the Prog. Pulse B tab to configure how the 1094B sends pulses out Channel B. There are four modes and seven pulse types from which to choose. Prog. Pulse B is identical to Prog. Pulse A except that it includes two additional modes: (1) Frequency, and (2) IRIG-B.

  • Page 58: The Version Screen

    Clock Startup and Utility Software 6.6.10 The Version Screen Choose the Version tab to view the firmware version of the Model 1094B, which is defined by the release date. Figure 6.13: 1094B Version Display Screen 6.6.11 Setting to Factory Defaults At some time it may be advisable to reset the Model 1094B to its original firmware configuration...

  • Page 59: Saving A Configuration File

    6.6.12 Saving a Configuration File After going to the trouble of configuring all of the settings in a new Model 1094B, the 1094B Utility allows you to save the configuration to a file. To save a configuration file of the current clock setup, select , or click the Save icon File >...

  • Page 60: B Loader With Opened Firmware File

    Clock Startup and Utility Software 3. Locate the new 1094B firmware zip file (the loader automatically extracts the file) and click button. The loader window should indicate some basic information about the file, Open including the firmware version by date. See Figure 6.14.

  • Page 61: The Setup Menus

    Daylight Saving values, and (2) setting up the IRIG-B outputs for the correct time zone. For the 1094B to operate with the correct time in your location, you will need to configure the Local Offset (from UTC) and Daylight Savings, or Summer Time, changeover settings. There are a number of other settings that may be important to your application, however local time offsets...

  • Page 62: To Begin Configuring

    7.1.3 Default Firmware Settings When shipped from the factory, and unless specified otherwise, the Model 1094B will be configured with a default set of values and features. This set of values and features are configured primarily through the front panel, lower row of keys, and alternately through either communication port.

  • Page 63: Set Serial Com1

    7.2 Set Serial COM1 Menu Item Function Menu Item Function COM1 DTR, 9600, 8, N, 1 COM2 DTR, 9600, 8, N, 1 Local Offset none Daylight Saving Out-of-Lock 01 min. Backlight Auto Cable Delay 60 ns Prog Pulse A Pulse Mode Prog Pulse B Pulse Mode IRIG-B Main...

  • Page 64: Set Broadcast Mode From Serial Com1

    From the menu shown in Figure 7.1, press the DOWN key to select the Broadcast option and set up the 1094B to broadcast one of the available strings. Press the UP or DOWN keys to navigate through the seventeen choices for the broadcast strings, starting with INTERROGATE MODE (as seen in Figure 7.3).

  • Page 65: Configure Serial Com1 Port Parameters

    7.4 Set Local Offset 7.3.2 Configure Serial COM1 Port Parameters To set COM parameters, press the UP key as shown in Figure 7.1. Work through each menu to select your desired settings – see Figure 7.4. Figure 7.4: COM1 and COM2 Parameter Setup Configure COM1 and COM2 in the same manner as shown in Figure 7.4.

  • Page 66: Set Dst/Summer Time

    The Setup Menus Set DST/Summer Time Daylight Saving and Summer Time are hereafter referred to as DST. These settings follow imme- diately after setting the Local Offset, and are actually part of the Local Offset main menu. DST settings are normally used to advance and retard the time once each year. The menus in this section allow you to customize the clock time for your region in 15 minute increments over a plus or minus 12-hour interval.

  • Page 67: Set Out Of Lock

    Figure 7.7: Out-of-Lock Time Setup Set Backlight The backlight function in the Model 1094B can be set to operate in three modes: Always ON, Always OFF and Automatic Shutoff (AUTO). AUTO is the most recommended setting, which causes the backlight to turn off automatically after period of 30 seconds of inactivity. See Figure 7.8.

  • Page 68: Set Cable Delay

    For the cable supplied with the Model 1094B, calculate the delay by multiplying the the length of the cable (in feet) by 1.19 nanoseconds per foot. The result of this calculation will be in nanoseconds, and you can enter in the whole part of this number into the 1094B. See Figure 7.9.

  • Page 69: Set Programmable Pulse A And B

    Programmable Pulse B has all of the features of Programmable Pulse A, but also includes: Frequency Mode, allows the 1094B to produce a square wave on the chosen port, from 1 to 1000 pulses per second, 50 percent duty cycle.

  • Page 70: Programmable Pulse A Or B Preliminary Setup

    The Setup Menus 7.9.4 Programmable Pulse A or B Preliminary Setup Except for two additional modes with Programmable Pulse B (i.e. Frequency Mode and Aux IRIG Mode), setting up the preliminary information for Programmable Pulse A and B is the same and will be covered here.

  • Page 71: Setting The Pulse-Per-Minute Mode

    7.9 Set Programmable Pulse A and B 7.9.6 Setting the Pulse-Per-Minute Mode Use the Pulse-per-Minute mode to produce a pulse every minute, at the set number of seconds (and fractional seconds) after the top of the minute. See Figure 7.12. Figure 7.12: Programmable Pulse Setup, Pulse Per Minute Note: Pulse width can be set in 10 millisecond increments from 0.01 to 59.99 seconds, otherwise it is set to 0.01.

  • Page 72: Setting The Pulse-Per-Day Mode

    The Setup Menus 7.9.8 Setting the Pulse-Per-Day Mode Use the Pulse-Per-Day mode to produce one pulse each day at the set number of seconds (and fractional seconds) after midnight. See Figure 7.14. Figure 7.14: Programmable Pulse Setup, Pulse-Per-Day Mode Note: Pulse width can be set in 10 millisecond increments from 0.01 to 600 seconds. 7.9.9 Setting the Single-Trigger Mode Use the Single Trigger mode to trigger a pulse once per year at a specific day of the year and time...

  • Page 73: Setting The Slow-Code Mode

    7.9 Set Programmable Pulse A and B 7.9.10 Setting the Slow-Code Mode Use the Slow-Code mode to trigger a pulse normally defined as follows: the output voltage is normally held high and it will go low for 2 seconds on the minute, 4 seconds on the hour and 6 seconds on the day.

  • Page 74: Setting The Frequency Mode, Programmable Pulse B

    Setting the Aux IRIG Mode, Programmable Pulse B The Model 1094B allows you to set up two different forms of the unmodulated IRIG-B time code. For example, one group of relays may require UTC time, and others may require the Local time.

  • Page 75: Set Irig-B Main

    IEEE 1344 extension ON or OFF in either mode. In the Model 1094B, IRIG-B is an electronic time code, synchronized to the GPS, that is transmitted each second. The four choices are (1) setting the time zone to UTC or Local, and (2) having the IEEE-1344 extension turned ON or OFF.

  • Page 76: Set Auto Survey

    Figure 7.21: Auto Survey Configurations Once the survey has been started, the Model 1094B will indicate that it is locked to the GPS, and continue to refine the surveyed position. The survey may also be turned off at any time by selecting Turn Off...

  • Page 77: Set Event/Deviation

    7.12 Set Event/Deviation The event inputs are used to time a signal received by the Model 1094B based on the internal time base synchronized to the GPS. The accuracy of these timed events are within a microsecond with a resolution of 0.1 microsecond. See Figure 7.22.

  • Page 78: Timing, Irig-B And Pulses

    Timing Output Description The rear panel of the Model 1094B includes a number of different types of connectors as illustrated in Figure 8.1. Starting from the right-hand side, there is a power inlet connector, a GPS antenna connector, one event input connector, two DB-9 serial connectors, one SPDT relay connector and four timing outputs.

  • Page 79: Digital Drivers - 250 Ma Per Channel

    8.2 Timing Output Description Figure 8.1: Rear Panel Description Pulse; analog signals include modulated IRIG-B. Two of the outputs (3 and 4) can also source an independent instance of IRIG-B or frequency of from 1 to 1000 pulses per second. Finally, each digital output can be configured as either 5 Volt CMOS/level shift, or 300 Volt FET.

  • Page 80: Output Signal Description

    The Model 1094B transmits Format B with four variations as seen in Table 8.2. Note that with the newer IRIG Standard 200-04, two of the designations have changed: the older B000 has become B004 and B120 has become B124.

  • Page 81: Modulated And Unmodulated Irig-B

    Consult your equipment manual to determine if the IEEE 1344 feature should be turned ON in the Model 1094B. To view details of the IEEE Std 1344-1995, please check with the IEEE.

  • Page 82: Programmable Pulse (Prog. Pulse)

    With this setting you can perform high-level switching at any of the four timing outputs, setting the 1094B to trigger a pulse at the required time of day or time interval. Connect a voltage of up to 300 volts and pull down a signal with the Open Drain 300-Volt FET. Remember to connect the FET with suitable protection against overvoltage transients and over current conditions.

  • Page 83: Connecting Outputs

    8.4.3 Synchronizing Multiple Devices From One Masterclock Output In many installations, master clock signals (e.g. the 1094B) are “fanned out” to a number of devices. This method makes more efficient use of the clock synchronizing capability since the clock drivers are designed to handle multiple loads.

  • Page 84: Connecting Unmodulated Irig-B

    8.4.4 Connecting Unmodulated IRIG-B To drive multiple loads from a single 1094B timing output, make sure they are wired in parallel. Some 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.

  • Page 85: Wire Losses

    8.4 Connecting Outputs 8.4.6 Wire Losses Another factor affecting the available voltage is the resistive losses through the cabling. Wire has a certain resistivity associated with it that is determined by its metallic composition, and resistance determined by the diameter and length. For example, single-strand, 22 AWG (bare, enamel-coated) copper wire has a resistance of approximately 16.2 ohms per 1000 feet.

  • Page 86: Solutions

    Timing, IRIG-B and Pulses Since electromagnetic waves travel slower through any cable, cable manufacturers normally specify cable with a velocity factor (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.

  • Page 87: Relay Contacts And Event Inputs

    Viewing the Fault Status If the Model 1094B executes a fault due to one of the conditions listed above, it will display the Clock Status fault condition on the LCD and illuminate the Fault LED. The fault status will also be available using the Event Status commands through either of the serial communications ports.

  • Page 88: Connecting To The Multimode Relay

    No Fault and Power On – Left to Center pin shorted, Center to Right pin open. Introduction to Event Inputs This section should provide more detail on the operation of the event inputs on the 1094B. To configure the event capture settings, see Section 5.5, Configuring Event Input Jumpers, and Sec- tion 7.12, Set Event/Deviation.

  • Page 89: Deviation Measurement

    Section 10.3.5. 9.7.5 Configuring Event/Deviation Operation There are two methods for configuring the Model 1094B for either event recording or 1 PPS devia- tion measurement: (1) through the front panel interface, and (2) through COM1 or COM2 RS-232 serial ports.

  • Page 90: Accessing Or Displaying Event Data

    Use the m,nEV command to configure the Event/Deviation function to either event recording or 1 PPS deviation measurement. For example, “0ev” configures the 1094B to the Event Mode, and “1ev” configures the 1094B to the Deviation Mode. For command reference, see Section 10.3.5.

  • Page 91: Clearing Events

    E R=004 S=026 This tells you that (1) the 1094B is set for Event recording, (2) the current “read” pointer is at event record 004 (when using the EV command), and (3) that there have been 26 records written to the event buffer.
  • Page 92 Type or send “0,123ev” or “1,123ev” to immediately clear all events stored in the event buffer. See Section 10.3.5. Clearing Events Using the 1094 Utility Using the 1094 Utility, first connect to the Model 1094B and select Unit > Clear Events, or click the Clear Events button. See Section 6.6.4.

  • Page 93: Serial Communication And Commands

    10.1 Introduction The Model 1094B has two RS-232/485 ports, called COM1 and COM2. COM1 combines the two functions of RS-232 and RS-485 at one DB9M connector (J5), and COM2 combines the two functions of RS-232 and RS-485 in a separate DB9M connector (J7). The RS-232 ports do not use flow control, and the RS-485 ports function in transmit only mode.

  • Page 94: Command Set

    Configuring Custom Broadcast Strings The Model 1094B has two custom strings (A and B) available for you to configure. Use the @@A. . . or @@B. . . to define and install the new string. Three elements are available for building up a custom string: characters, true/false conditions and ordinal conditions.

  • Page 95: Custom String Character Table

    10.3 Command Set Custom String Command Command: @@A . . . , @@B . . . Use @@A . . . to create a Channel A broadcast, and @@B . . . to create a Channel B broadcast string. This includes start of header (Hex 01), time, date, carriage-return, and other required features. In a sense, it allows you to create a custom broadcast string.
  • Page 96 ASCII + Year: /T01/Y /d:/h:/m:/s/ 01? /:./: /:#/;?/ /r Return Custom String – mCB To return a custom string installed in the Model 1094B, use the mCB command, where m = 0 for Custom 1 and m = 1 for Custom 2.

  • Page 97: Broadcast Mode Overview

    = the update rate, from 0 to 9999 seconds; o = the Time Zone, where 0 = UTC and 1 = Local; p = the COM port, where 0 = COM1 and 1 = COM2 Broadcast Example Set the 1094B to broadcast the Vorne Std output at a rate of once per second, in Local time from COM1. Send: 2,1,1,0BR To turn off...

  • Page 98: Broadcast Commands

    Broadcast Mode – EVENT DATA Command: 3,n,o,0BR, 3,n,o,1BR 3,n,o,0BR configures the 1094B to broadcast from COM1 any event data at the time it is recorded. 3,n,o,1BR configures the 1094B to broadcast from COM2 any event data at the time it is recorded.
  • Page 99 ASCII using an extended format prefaced with a time quality indicator (Q). 5,n,o,1BR configures the 1094B to broadcast the same data from COM2. The start bit of a carriage-return is transmitted on time. Set n equal to your desired broadcast interval (in seconds), o according to the desired time zone (0 = UTC, or 1 = Local).
  • Page 100 ASCII data appended with a time quality indicator. 7,n,o,1BR configures the 1094B to broadcast from COM2. Set n equal to your desired broadcast interval (in seconds) and o according to the desired time zone (0 = UTC or 1 = Local).
  • Page 101 10,n,o,0BR configures the 1094B to broadcast the ABB SPA format from COM1. 10,n,o,1BR configures the 1094B to broadcast the same format from COM2. Set n equal to your desired broadcast interval (in seconds) and o according to the desired time zone (0 = UTC or 1 = Local).
  • Page 102 13,n,o,0BR configures the 1094B to broadcast the Kissimmee Message (or Custom 2) from COM1. 13,n,o,1BR configures the 1094B to broadcast the Kissimmee Message from COM2. Set n equal to your desired broadcast interval (in seconds) and o according to the desired time zone (0 = UTC or...

  • Page 103: Ngts Data Message Content

    14,60,o,0BR configures the 1094B to broadcast the NGTS Message from COM1. 14,60,o,1BR configures the 1094B to broadcast the NGTS Message from COM2. Set n equal to your desired broadcast interval (in seconds, normally set to 60, or once per minute) and o according to the desired time zone (0 = UTC or 1 = Local).

  • Page 104: Event Mode Commands

    Serial Communication and Commands 10.3.5 Event Mode Commands Return Specific Event Command: nED nED sets the event buffer Read Index to a specific event number (1 to 300), and returns that event information in either Local or UTC time format depending on how the command, nTA is configured.

  • Page 105: Status Mode Commands

    10.3 Command Set 10.3.6 Status Mode Commands Status of Event/Deviation Command: SA SA returns the event/deviation Channel setup information, read index number and write index number. Response: D/E, R = nnn, S = mmm Format: D indicates the input channel is in 1 PPS deviation mode E indicates the input channel is in Event Mode nnn Channel read index (000 to 299) mmm Channel write index (000 to 299)

  • Page 106: Local / Daylight Saving Time Setup Commands

    Serial Communication and Commands Response: V=vv S=ss T=t P=Off E=0 Format: vv = Number of satellites, visible to the antenna, per almanac. ss = relative signal strength (range: 0 to 255, nominal value = 15) t = Number of satellites being actively tracked (up to twelve) P = Off, Indicates that the time dilution of precision (TDOP) calculation is not being performed.

  • Page 107: Front Panel Control Commands

    10.3 Command Set 0DT returns the current Daylight Saving / Summer Time Settings to the current COM port. Response: (Mode: OFF, ON, or AUTO) Mode:AUTO START:02:00 Second SUN of MAR STOP :02:00 First SUN of NOV Set Daylight Saving/Summer Auto Start Time Command: 2,w,x,y,zDT Sets the date and time when Daylight Saving / Summer Time starts.

  • Page 108: Irig-B Data Output Commands

    Serial Communication and Commands ON the backlight, and n = 2 sets the backlight to the AUTO mode, where it automatically turns off after 30 seconds of inactivity. Response: 10.3.9 IRIG-B Data Output Commands IRIG Data IEEE P1344 Command: m,n,oIR This command controls the activity of the IRIG-B IEEE P1344 control bits.

  • Page 109: Date And Time Commands

    10.3 Command Set Return Longitude Command: LO Returns the current antenna longitude. Response: Wddd:mm:ss.sss Format: W = West (E for East) ddd = degrees mm = minutes ss.sss = seconds Set Receiver Position Command: d,m,s,D,M,S,hSP Response: Sets the receiver position based on the following values: negative values are South latitude and West longitude, positive values are North latitude and East longitude.

  • Page 110: Programmable Pulse Output Commands

    Serial Communication and Commands Return UTC Date Command: DU DU returns the current date, in UTC time. Response: ddmmmyyyy Return Local Time Command: TL TL returns the current Local time. Response: ddd:hh:mm:ss Return UTC Time Command: TU TU returns current UTC time. Response: ddd:hh:mm:ss NOTE: The DL, DU, TL and TU command formats are identified as follows: Format: yyyy = year...
  • Page 111 Command: d,h,m,s,hs,oAL Sets the time at which the Model 1094B issues the programmable pulse. d, h, m, s and hs set the output pulse to be generated at the next occurrence of the specified time and date. o sets the output to either Programmable Pulse A (communication ports 1 and 2) and Programmable Pulse B (communication ports 3 and 4).

  • Page 112: Antenna System Delay Commands

    Set Out-of-Lock Time Command: (-)nLK (-)nLK configures the Out-Of-Lock function in the 1094B. 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 sets the amount of delay time (in minutes) following loss of satellite synchronization before an out-of-lock signal is generated and the relay contacts close.
  • Page 113 10.3 Command Set Set Survey Mode Command: mSS Sets the survey mode to either Turn Survey mode Off or for Power On Survey, where m = 0 for Turn Off Survey, m = 1 for Power On Survey. Use m > 1 to return survey mode. Set Display Mode Command: mDM Sets the display mode to the following: for m = 0, enables the current status display;...

  • Page 114: A Technical Specifications And Operating Parameters

    UTC/USNO 250 ns peak less than 100 ns typical (SA off) A.2.3 Internal Oscillator The Model 1094B uses a high performance crystal synchronized to GPS time. A.2.4 Position Accuracy 8 meters, rms, 90% confidence A.2.5 Satellite Tracking 12 channel, C/A code (1575.42 MHz). Receiver simultaneously tracks up to twelve satellites.

  • Page 115: Acquisition

    A.3 I/O Configuration A.2.6 Acquisition less than 5 minutes with current almanac less than 20 minutes without current almanac greater than 20 minutes in areas where antenna has limited or obstructed view of sky I/O Configuration A.3.1 Timed Outputs Outputs: Four, each with BNC and 5-mm pluggable terminal strip in parallel. Output Select is jumper selectable between unmodulated IRIG-B, 1 Pulse Per Second (PPS), and Programmable Pulse.

  • Page 116: Spdt Relay Specifications

    Technical Specifications and Operating Parameters SPDT Relay Specifications Type, SPDT, plastic encapsulated, sealed plastic construction Make/Model, OMRON/G6RN-1-DC5 Rated switching current: 8 A @ 250 VAC and 5 A @ 30 VDC Max. switching capacity: 2,000 VA, 150 W Life expectancy: approx. 100,000 cycles/electrical, 10,000,000 cycles/mechanical Max.

  • Page 117: Antenna Cable

    Operator Interface RS-232C Interface or eight, front-panel keys A.5.7 Setup Functions See Chapter 7, The Setup Menus, for complete details on setting up the operation of the Model 1094B. A.5.8 Display 2-line by 20-character, backlighted supertwist LCD A.5.9 Display Functions...

  • Page 118: Weight

    Technical Specifications and Operating Parameters A.6.2 Weight Clock: 1.9 kg (4.3 lbs.) net. (instrument) Antenna and Cable: 2.0 kg (4.4 lbs.) net. Shipping: 6.0 kg (13 lbs.) net. (includes antenna, cables and accessories) A.6.3 Power Requirements Option 07 and Option 10 Voltage: 85 to 264 Vac, 47 to 440 Hz, 20 VA max.

  • Page 119: B Using A Surge Arrester

    Using a Surge Arrester 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 120: Antenna And Clock Connections

    Using a Surge Arrester 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 121: Suggested Mounting Of The As0094500 Surge Arrester

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

  • Page 122: C Statement Of Compliance

    Appendix C Statement of Compliance Introduction The following page is a statement of compliance that includes Model 1094B.
  • Page 123 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 124: D Switching High Voltage Signals

    Use this method with applications when it is acceptable to connect the negative side of the FET to the 1094B chassis ground. This application could also be used with a periodic programmable pulse (e.g. 1 Pulse Per Minute) for timing instead of event logging.

  • Page 125: Logging Requirements And Circuit Notes

    This limits the FET current to approximately 10 milliamperes. Configure the Model 1094B by setting up for a negative Pulse Polarity so that the FET is turned on and the voltage Logger + side is held low. When the pulse occurs, the FET will turn off and the + line will rise to the battery voltage and return to zero when the pulse clears.

  • Page 126: Example 3: 5 Volt Switching With External Relay

    As mentioned in the introduction, some applications may require a positive ground, or method to isolate the recorder or event logger from the Model 1094B. To accomplish this, it is simple to place a small switching relay between the clock output and the event logger. Since the application requires a positive ground, the small relay isolates the clock from the event logger.
  • Page 127 Index 1-PPS antenna cable description, 67 effects of cable parameters, 19 1094B software Appendix connecting, 34 A, 100 display setup, 44 D, 108 opening configuration file, 45 E, 110 prog pulse A, 42 cable prog pulse B, 43 accessory, 20 reading clock config, 36...
  • Page 128 INDEX Survey Mode, 62 measurement principle, 75 configure clock digital drivers, 65 display COM parameters, 39 startup, 28 connect, 34 display, 44 display modes Position, 32 IRIG-B, 41 Time, 30 open new configuration, 45 drive current vs. output voltage, 65 prog pulse A, 42 driver prog pulse B, 43...
  • Page 129 INDEX humidity, 104 open drain, see 300-Volt FET Option IEC-320 power inlet connector, 7 08, terminals with SWC, 8 initial clock time, 27 10, terminals with SWC, 8 initial LED indication, 27 Options initial startup sequence, 27 07, IEC-320 connector, 7 inlet power, 11 power, 07, 11 IRIG-B...
  • Page 130 INDEX specifications, 25, 102 return ROM date, ii display buffer, 99 RS-232C Communication, see serial command firmware version, 98 local date, 95 serial command local time, 96 antenna delay UTC date, 96 set, 98 UTC time, 96 broadcast return elevation, 94 interrogate, 84 return longitude, 95 ABB, 87...
  • Page 131 INDEX oscillator, 100 position accuracy, 100 power connector, 104 power requirements, 104 satellite tracking, 100 serial port parameters, 102 serial port pinout, 102 serial ports, 102 setup functions, 103 standard output signals, 101 temperature and humidity, 104 timing outputs, 101 weight, 104 startup sequence, 27 Statement of Compliance, 108...

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