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Arbiter Systems 1083B Operation Manual

Satellite-controlled frequency standard / comparator
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MODEL 1083B
SATELLITE-CONTROLLED
FREQUENCY STANDARD / COMPARATOR
OPERATION MANUAL
1083B SATELLITE-CONTROLLED FREQUENCY STANDARD / COMPARATOR
50 Ω
INPUT
1 PPS
Made in USA
1MHz
Serial Number
10 MHz
B1234
5 MHz
ARBITER SYSTEMS, INC.
PASO ROBLES, CALIFORNIA
U.S.A.
Calibration
Date
xx-xx-xxxx
OPERATE
TIME
STABILIZED
UNLOCKED
SETUP
FAULT
Model 1083B
INPUT
POSITION
DEVIATION
STATUS
UP
DOWN
ENTER

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Summary of Contents for Arbiter Systems 1083B

  • Page 1 MODEL 1083B SATELLITE-CONTROLLED FREQUENCY STANDARD / COMPARATOR OPERATION MANUAL 1083B SATELLITE-CONTROLLED FREQUENCY STANDARD / COMPARATOR INPUT 50 Ω INPUT OPERATE TIME POSITION DEVIATION STATUS Calibration 1 PPS STABILIZED Made in USA Date xx-xx-xxxx UNLOCKED 1MHz SETUP DOWN ENTER Serial Number...
  • Page 2 This manual is issued for reference only, at the convenience of Arbiter Systems. Every 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 Definition This manual describes the Model 1083B GPS Satellite Controlled Frequency Standard / Comparator. ROM Dates This version of the manual is written for clocks having ROM dates of 11-16-99 or later. Any changes made in subsequent revisions which affect operation or specifications will be noted with either (a) a new manual or (b) a revised version of this manual.
  • Page 4 FOR THE FASTEST POSSIBLE SERVICE, PLEASE PROCEED AS FOLLOWS: 1. Notify Arbiter Systems, Inc., specifying the instrument model number and serial number and giving full details of the difficulty. Service data or “instrument return” authorization will be provided upon receipt of this information.
  • Page 5 General Information ! Section Two: Technical Specifications ! Section Three: Physical Configuration ! Section Four: Operation ! Section Five: Firmware Configuration ! Appendixes: RS-232 Commands ! Options © Copyright Arbiter Systems Incorporated 2001 All rights reserved. International copyright secured. PD0026500B...

  • Page 7: Table Of Contents

    Table of Contents 1.0 GENERAL INFORMATION ..................1 1.1 Scope ............................. 1 1.2 Equipment Needed ........................ 1 1.2.1 Antenna, Cables and Accessories Chart................ 1 1.2.2 Available Accessories ....................2 1.3 Options ..........................3 1.3.1 Option 26, Rack Slide Kit ..................... 3 1.3.2 Optional Sine Wave Outputs..................
  • Page 8 viii Table of Contents 3.1.1 Location Considerations ....................11 3.1.2 Power Requirements ....................11 3.1.3 Rear Panel Layout......................13 3.1.4 Rack Mounting......................13 3.2 Antenna ..........................13 3.2.1 Antenna Location......................13 3.2.2 Antenna Gain Pattern ....................14 3.2.3 Antenna Mounting .......................14 3.2.4 Optional Antenna Mounting Kit ..................14 3.3 Antenna Cable........................15 3.3.1 Length and Loss Considerations..................15 3.3.2 Routing Considerations....................16...
  • Page 9 Table of Contents 4.8 Input Deviation Measurements, Recording and Display Modes......... 36 4.8.1 Measurement Methods ....................36 4.8.2 Measuring Deviation of a 1, 5, 10-MHz, or 1 PPS Signal .......... 38 5.0 FIRMWARE CONFIGURATION ................41 5.1 General ..........................41 5.2 Change Configuration Using Setup Menu ................
  • Page 10 Table of Contents List of Tables and Figures Figure 3-1. Model 1083B Rear Panel .....................13 Figure 4-1. Model 1083B Front Panel .....................19 Figure 4-2. Status Display Mode Response Flow Chart..............24 Figure 4-3. Time Display Mode Response Flow Chart ..............27 Figure 4-4. Set Initial Position Flow Chart..................31 Figure 4-5.

  • Page 11: General Information

    (see paragraph 1.2.2) intended to be added to the existing 15-meter cable. Main Power Module: The Model 1083B comes equipped with a 85 – 264 Vac, 47 – 440 Hz or 110 – 275 Vdc, 12 VA, IEC-320 type power input module, with an IEC-320 ac cord. Specify the ac power cord type P1 –...

  • Page 12: Available Accessories

    RG-11 Crimp Tool + 25 Type F Connectors AS0044800 For RG-6 cable lengths of greater than 75 meters (250 feet) Arbiter Systems offers an inline 21-dB preamplifier to make up for the signal loss (see paragraphs 3.2 and 3.3 for further information concerning Antennas and Cables).

  • Page 13: Options

    1.3.2 Optional Sine Wave Outputs The Model 1083B can be configured with up to eight separate sine wave outputs at 1, 5 or 10 MHz, mounted internally. Each sine wave output is a separate module that comes with its own BNC connector and at the chosen frequency.
  • Page 14 General Information Option Numbering for Optional Sine Wave Boards Frequency and location are used to determine option numbers for sine wave boards. The first number represents the frequency and the second number represents the frequency output location. Designations are as follows: 1083Boptxy, where, x = 1,2, …...

  • Page 15: Technical Specifications And Operational Parameters

    2.0 Technical Specifications and Operational Parameters 2.1 Scope This section contains information pertinent to the functional and operational characteristics of the standard Model 1083B, including Receiver Characteristics, Operator Interface(s), System Inter- face(s) and Physical Characteristics. NOTE: Specifications are subject to change without notice.

  • Page 16: Antenna

    Technical Specifications 2.2.6 Antenna ! External, ¾-in. pipe thread mounting (19-mm) ! Size: 77.3-mm diameter x 74.6-mm height (3.04 in. x 2.94 in.) 2.2.7 Antenna Cable ! 15 meters (50 feet) included ! Other cable styles and lengths available – see paragraph 3.3.1.3 2.3 Frequency Outputs ! Analog sine wave outputs of 1, 5, and 10 MHz through BNC connectors.

  • Page 17: Oscillator

    Technical Specifications 2.4 Oscillator ! Type: 5 MHz, Wenzel Associates Small Fry, SC cut, 3 overtone ! Stability: 1 day: 1.0 x10 ; Over Temperature: 5.0 x 10 ! Warm-up: 1 hour 1-PPS Timing 1 PPS (Pulse-Per-Second) through a BNC Outputs connector TTL compatible into 50 Ω...

  • Page 18: Operator Interface

    2 x 20 fluorescent display, eight status LEDs and RS-232C serial port. 2.7.1 Front Panel Keys Eight keys provide input for the Model 1083B and fall into two groups—upper and lower. The upper keys are labeled TIME, POSITION, INPUT DEVIATION and STATUS and are used to interrogate the frequency standard/comparator operation.

  • Page 19: System Interface

    Technical Specifications 2.7.4 System Interface RS-232C Port: Connector: 9-pin D-type subminiature: Pin 2 = Receive Data Pin 3 = Transmit Data Pin 4 = Auxiliary Output Pin 5 = Ground Pin 8 = Auxiliary Input Baud Rate 1,200 – 19,200 baud; 7 or 8 data bits, 1 or 2 stop bits, odd/even/no parity. Supports all keyboard functions, plus continuous output data in the following formats: Broadcast Mode Output String...

  • Page 20: Input Signal

    Technical Specifications 2.8.3 Input Signal External signal input to front-panel BNC connector, 1 PPS, 1, 5 or 10 MHz 2.9 Physical Characteristics 2.9.1 Dimensions Instrument: 430-mm W x 44-mm H x 260-mm D (16.9-in. x 1.7-in. x 10.1-in.) Antenna: 77.3-mm diameter x 74.6-mm H (3.04-in. x 2.94-in.) 2.9.2 Weight Instrument: 2.0 kg (4.5 lb) net...

  • Page 21: Physical Configuration

    3.3.1.3); thus, the entire cable length should be used, with any excess coiled up and placed out of the way. Using RG-6 style cable, the Model 1083B can operate with antenna cable lengths up to 75 meters (250 feet) without a preamplifier and up to 150 meters (500 feet) using an in-line preamplifier.
  • Page 22 Physical Configuration 3.1.2.3 DC Operation For 110 – 275 Vdc operation, the dc voltage should be applied between the LINE and NEUTRAL terminals of the power-inlet module, without regard to polarity (the internal power supply will ac- cept either polarity). When viewing the power-inlet module from the rear of the instrument, the LINE connection is the one nearest the bottom, and the NEUTRAL is nearest the top.

  • Page 23: Rear Panel Layout

    Physical Configuration 3.1.3 Rear Panel Layout When viewed from the behind, the rear panel of a standard Model 1083B is arranged in the following manner, left to right (see Figure 3-1): ! Eight available holes configurable for standard sine wave outputs at 1 MHz, 5 MHz or 10 MHz.

  • Page 24: Antenna Gain Pattern

    Physical Configuration possible view of the sky in all directions. An ideal installation is one in which the view is unob- structed from the horizon to directly overhead at each point of the compass. Alternatively, mount the antenna indoors, below a skylight or other structure that is transparent to RF energy at the GPS-L1 frequency of 1.575 GHz.

  • Page 25: Antenna Cable

    Physical Configuration 3.3 Antenna Cable 3.3.1 Length and Loss Considerations 3.3.1.1 Standard Antenna Cable Included with the clock is a standard antenna cable assembly, constructed using a 15-meter (50- foot) length of RG-6 type low-loss coaxial cable and terminated with male Type F RF connectors. Optional lengths of RG-6 coax are separately available for longer runs;...

  • Page 26: Routing Considerations

    Physical Configuration 3.3.1.3 Available Antenna Cables and Accessories for Longer Runs Arbiter Systems offers longer antenna cables for use with all clock models when the standard 15- meter (50-foot) cable is inadequate. In addition, using a 21-dB in-line amplifier (P/N AS0044700) allows use of antenna cables having twice the length and loss (as without the amplifier).

  • Page 27: Antenna Module Power

    Physical Configuration 3.3.2.3 Adjacent Signals Be cautious when routing near high power RF sources or alongside cables carrying high-power RF, such as transmitter cables. Although the standard RG-6 style cable is triple-shielded and has excellent shielding properties, these sources of energy may interfere with the GPS signal. In these applications, consider using RG-11 type cable (P/N WC0004900).

  • Page 28: Antenna And Cable Operational Test

    3.3.6 Antenna and Cable Operational Test Prior to initial operation or any time antenna/cable problems are suspected, perform the following procedure. This procedure is performed at the location of the Model 1083B, and does not require access to the antenna location.

  • Page 29: Operation

    Figure 4-1. Model 1083B Front Panel 4.1.1 LED Input Signal Status Indicators Located directly to the left of the fluorescent display on Model 1083B are four LED indicators. These indicators provide information about the input load and frequency selected for the comparator function (see paragraph 4.8.3.1 for information about configuring input modes).

  • Page 30: Led Instrument Status Indicators

    It is also used to display the current configuration of operational parameters. 4.1.4 Front Panel Keys Eight keys on the front panel control the various features of the Model 1083B. These features include operating and configuring the Model 1083B. If necessary, the RS-232 FB and FL commands may be used to disable the front panel keys and display functions.

  • Page 31: Satellite Acquisition And Positional Data

    Setup Key The SETUP key invokes a series of sub-menus used to adjust configurable parameters within the 1083B. In the numeric data entry mode, it moves the cursor to the left. Up Key The UP key is used in conjunction with the SETUP menus to adjust values upward, or to scroll upward through available menu choices.

  • Page 32: Satellite Acquisition Time

    FREQ STANDARD STATUS LOCKED TO GPS If the Model 1083B is performing a survey with position hold ON and is locked to the GPS system, the second line will change to read, LOCKED***SURVEY MODE. If the Model 1083B has completed a survey and is in position hold mode, then the second line will read,...

  • Page 33: Status Display Modes

    Note that the flow chart entitled “NO LOCK” should be followed when a Model 1083B is in Startup mode and has not locked to the GPS system. The flow chart entitled “NORMAL” should be followed under normal power-on, lockup, survey &...
  • Page 34 Operation NO LOCK NORMAL LOSS OF LOCK (Startup, Satellite (Startup, Satellite (Stqrtup, Satellite Lock lock not achieved) lock achieved) achieved, then lost) FREQ STANDARD STATUS FREQ STANDARD STATUS FREQ STANDARD STATUS STARTUP STARTUP UNLOCKED If unlocked > 1min Press STATUS FREQ STANDARD STATUS FREQ STANDARD STATUS UNLOCKED 01 MIN...

  • Page 35: Position-Hold Mode - On

    NOTE The factory default setting for Position-Hold Mode is enabled (ON). 4.4.3 Position-Hold Mode – OFF When Position Hold Mode is OFF and as soon as the 1083B successfully acquires and locks to the first satellite, the display should indicate as follows:...

  • Page 36: Ocxo Status Display

    ‘X’ equals the number of Data Bit errors detected and corrected. 4.5 Time Display Modes To display the date and time, press the time function key, located on the front panel (The 1083B must first establish GPS synchronization). Pressing the time function key repeatedly will cause the LCD display to sequence through each of its four time and date formats –...

  • Page 37: Time Of Year Display, Universal Time Coordinated (Utc)

    Operation NO LOCK NORMAL LOSS OF LOCK (Startup, Satellite (Startup, Satellite (Startup, Satellite lock lock not achieved) achieved, then lost) lock achieved) Press Time Key Press Time Key UTC DATE/TIME SAT UTC DATE/TIME WED NOT READY XX:XX:XX 13 APR 1999 14:48:43 Press Time Key UTC DATE/TIME WED 1999 103:14:48:43...

  • Page 38: Time Of Year, Local Time

    (see paragraph 5.2). 4.6 Position Display Modes Press the POSITION key to access position information. When the Model 1083B is first switched ON, and prior to acquisition of satellites, the only position information available is that which is stored in the non-volatile memory of the GPS receiver module.
  • Page 39 Operation HOLD is disabled, the displayed position coordinates will accurately correspond to the actual antenna location.

  • Page 40: Set Initial Position

    Setting an initial position provides the clock with its approximate longitude and latitude. The Model 1083B uses this initial location to begin searching for satellites that should be visible from that specific location in accordance with the stored Almanac data. To set Initial Position, perform the following steps prior to initial acquisition of satellites.

  • Page 41: Position-Hold And Auto Survey Modes

    ! It can use values edited via the front panel using the SETUP menu. The Model 1083B also has the ability to determine its own position with greater accuracy than is possible with a single fix using the Auto Survey Mode. This function operates by accurately averaging a specified number of position fixes –...

  • Page 42: Position Accuracy Requirements

    Operation Model 1083B to continuously update its latitude and longitude, and average only the elevation position (up to a total of 24 hours – 86400 fixes). Altitude hold (ALT HOLD ON) keeps the elevation position static and updates only the latitude and longitude. Use the front panel Setup menu, or nPH command found in Appendix A, Table A-6, to set any of these modes.

  • Page 43: Position-Hold Mode Activation

    Operation SET # OF FIXES 60 (1 Min or more) 4. Use the UP and DOWN arrow keys to select the desired number of fixes (see Figure 4-5), and press ENTER. 5. After pressing ENTER (from #4 above) the next Setup menu selection is “SET POSITION HOLD?”...
  • Page 44 SETUP menu, and will begin calculating its position. Position information will be updated, as it is determined, and will be reflected as such in the front-panel position display. The Model 1083B may be returned to normal operation by pressing one of the primary function keys (e.g., POSITION).
  • Page 45 5. Edit the position as shown, or simply press one of the primary function keys to escape. 7. If selecting ALT TRACK ON, press ENTER and the Model 1083B will continuously average the elevation measurements using a 24-hour trailing average (calculating continuous latitude and longitude positions), and apply an approximate correction to the timing solution for the error introduced by altitude offsets.

  • Page 46: Input Deviation Measurements, Recording And Display Modes

    (Figure 4-7). The reference signal, in this case, is generated within the Model 1083B and synchronized to the GPS. Also provided, as a standard, front-panel selection, is a 50-Ω termination that provides correct impedance matching to sources with 50-Ω outputs. This 50-Ω...
  • Page 47 1 Hz. By counting the number of 100 MHz pulses between the start and stop signals the Model 1083B can determine the deviation to within 10-ns resolution. (See equations 1 – 5 and figure 4.9) This count is determined by time tagging both pulses with 10-ns (100-MHz) resolution, and subtracting the time tags.

  • Page 48: Measuring Deviation Of A 1, 5, 10-Mhz, Or 1 Pps Signal

    4.8.2 Measuring Deviation of a 1, 5, 10-MHz, or 1 PPS Signal Apply the signal to be measured to the BNC connector on the left front panel of the Model 1083B. If the source requires a 50-ohm load, change the configuration to 50 Ω, either from the front panel keys, or by firmware through the RS-232 port.
  • Page 49 Operation Press the UP or DOWN keys to change the termination value to either HI-Z or to 50 Ω, and press ENTER to confirm the choice. The 50-Ω input status LED should illuminate if “50 Ω” is selected. Other input termination combinations are available – see Appendix A, Table A-5. Press the INPUT DEVIATION key and (before settling) it should read: FREQUENCY OFFSET ∆...
  • Page 50 Allan Variance data points to 100 100ma The Model 1083B will then begin to measure frequency deviation and calculate Allan Variance. It will display the value after the number of data points have been measured (in 100 seconds).

  • Page 51: Firmware Configuration

    The SETUP menu consists of eight (8) sub-menus, which control many of the operating functions of the Model 1083B. All are illustrated in flow chart format in Figures 4-4 through 4-8 (in Section 4) and Figures 5-1 through 5-8. The figures are generally in the same sequence as their respective menu selections when scrolling through the SETUP menu: Figure 5-1.

  • Page 52: Configuration Flow Charts

    Press any of the four, top keys to exit the SETUP menu. 5.2.1 Configuration Flow Charts All of the Model 1083B configuration flow diagrams are found in the following pages and in Section 4 Operation (see List of Tables and Figures in the front of this manual).
  • Page 53 Firmware Configuration MAIN SET RS-232? Press SETUP Key Set Port Config? Set Broadcast? Set Broadcast Set Baud Rate? Mode • Interrogate • ASCII • Vorne Set Word Length? • Extended ASCII • ASCII + Quality • ASCII year + Quality •...
  • Page 54 Firmware Configuration Press SETUP Key SET LOCAL HOUR? Press ENTER to move Press UP/DOWN keys to make between selection blocks selections and adjust time values ON/OFF SET DAYLIGHT SAVING? To select AUTO/ON/OFF DAYLIGHT SAVING XXXX AUTO SET DAY-SAVING TIME? To adjust HOUR CHANGE-OVER HOUR: 02 SET DAY-SAVING TIME? To adjust MIN...
  • Page 55 Firmware Configuration Press SETUP Key SET OUT-OF-LOCK? OUT-OF-LOCK? UNLOCK OFF ZERO DELAY UNLOCK LOCK TIME = XX Min EXIT Out-of-Lock Setup Menu NOTES: 1. Press ENTER to enter the “Set Out-of-Lock” Menus 2. Use UP/DOWN keys to move between the three Out-of-Lock selections 3.
  • Page 56 Firmware Configuration Press SETUP Key SYSTEM DELAYS? CABLE DELAY? DELAY = 000060 ns CLOCK OFFSET? OFFSET 000000000 ns EXIT System Delay Setup Menu NOTES: 1. Press ENTER to enter the “Set System Delay” Menus and move to different System Delay menus. 2.
  • Page 57 Firmware Configuration Press SETUP Key ∆ ∆ SET F / T MODE? SELECT INPUT MODE? Selections: MODE= 5 MHz DEVIATION 1 MHz, 5 MHz, 10 MHz, 1 PPS select 1, 5, 10 MHz SELECT MEASURE TIME Selections: select 1 PPS 1, 10, 100, 1000 Seconds TIME= 1 SECOND...

  • Page 59: Appendix A. Rs-232 Command Summary

    1083 causes it to send out the Time and Date to the serial port once per second. When a command requests information from the Model 1083B, 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.
  • Page 60 Appendix A. RS-232 Commands TABLE A-4. FRONT PANEL CONTROL COMMANDS ..........56 Disable Control Panel, FB ......................56 Enable Control Panel, FE......................56 Lock Setup Keys, FL ........................56 TABLE A-5. MEASUREMENT MODE ( ∆ ∆ ∆ ∆ F / ∆ ∆ ∆ ∆ T) COMMANDS........57 Set Measurement Mode –...

  • Page 61: Broadcast Modes, Nb

    2. Vorne Standard – Configure RS-232 Broadcast Mode to support Vorne large format time displays. Refer to Arbiter Systems Application Note 103 for more information. Response (1/sec; number and order of strings returned depend upon options ordered with clock). Data is transmitted ahead-of-time, and the <...

  • Page 62: Broadcast Data - Local, Bl

    Data – UTC may be used concurrently with other Broadcast commands. ↵ Response: Broadcast Display Buffer nDZ sets Model 1083B to display the chosen value and broadcast the display buffer as follows: Format: Value turns off the display buffer broadcast mode Date &...

  • Page 63: Clock Status Sc

    3 satellites are visible, OR if Position-Hold is active. Describes the status of internal communications between the receiver and clock boards. A “0” indicates no errors. If clock operation is improper and any other character is persistently returned, contact Arbiter Systems.

  • Page 64: Survey Status, Sq

    Appendix A. RS-232 Commands Survey Status 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. ↵...

  • Page 65: Daylight Saving - Off / On / Auto Nds

    Appendix A. RS-232 Commands Table A-3. Local Daylight Savings Time Setup Commands Table A-3. Local Daylight Savings Time Setup Commands Table A-3. Local Daylight Savings Time Setup Commands Table A-3. Local Daylight Savings Time Setup Commands Daylight Saving – Off / On / Auto nDS sets the Daylight Saving time adjust feature as follows: Feature Deactivates the Daylight Saving time adjust feature (does not add 1 hour to local...

  • Page 66: Disable Control Panel Fb

    Appendix A. RS-232 Commands Table A-4. Front Panel Control Commands Table A-4. Front Panel Control Commands Table A-4. Front Panel Control Commands Table A-4. Front Panel Control Commands Disable Control Panel FB disables all control-panel keys and blanks the front panel display. ↵...

  • Page 67: Set Measurement Mode - Frequency, Nmm

    Appendix A. RS-232 Commands Table A-5. Measurement Mode ( Table A-5. Measurement Mode ( Table A-5. Measurement Mode ( Table A-5. Measurement Mode (∆ ∆ ∆ ∆ F / F / ∆ ∆ ∆ ∆ T) Commands T) Commands T) Commands T) Commands Set Measurement Mode –...

  • Page 68: Measurement Mode, Nmr

    Appendix A. RS-232 Commands Measurement Mode nMR returns the deviation measurement data. Format: Value Returns the 1 PPS deviation 16 sample average Returns the 1 PPS deviation 16 sample sigma Returns the frequency difference. Returns Allan Variance data ↵ Response: Set Allan Variance Data Points nMA sets the number of measurement board Allan variance data points with n.

  • Page 69: Set Position-Hold - Elevation, Mmmmm.mmh

    Appendix A. RS-232 Commands Table A-6. Position Data and Position-Hold Commands Table A-6. Position Data and Position-Hold Commands Table A-6. Position Data and Position-Hold Commands Table A-6. Position Data and Position-Hold Commands Set Position-Hold – Elevation MMMMM.mmH MMMMM.mmH sets the antenna elevation in meters WGS-84 (World Geodetic System 1984); fractional meters of elevation are optional.

  • Page 70: Latitude, La

    Elevation be changed with the “H” command. Sets the position-hold mode to ALT TRACK ON. Calculates the elevation position and averages these using a 24 hour trailing average. Model 1083B continues to compute latitude and longitude. ↵ Response:...

  • Page 71: Auto Survey Mode, M:npq

    Appendix A. RS-232 Commands Table A-7. Survey Mode Commands Table A-7. Survey Mode Commands Table A-7. Survey Mode Commands Table A-7. Survey Mode Commands Auto Survey Mode m:nPQ m:nPQ sets the Survey Mode (m) and number of fixes (n) to average. Used to automatically determine position for Position-Hold position.

  • Page 72: Set Receiver Time, Yyyy:mm:dd:hh:mmts

    Appendix A. RS-232 Commands Table A-8. Date and Time Commands Table A-8. Date and Time Commands Table A-8. Date and Time Commands Table A-8. Date and Time Commands Set Receiver Time yyyy:mm:dd:hh:mmTS yyyy:mm:dd:hh:mmTS sets Receiver (UTC) Time. The command is ignored when the receiver is locked to satellites.

  • Page 73: Set Display Mode, Ndm

    Appendix A. RS-232 Commands Table A-9. Display Mode Commands Table A-9. Display Mode Commands Table A-9. Display Mode Commands Table A-9. Display Mode Commands Set Display Mode nDM sets the display mode as follows: Format: Value Selects the current status display Displays the Date &...

  • Page 74: Set Out-Of-Lock Time, (-)Npl

    Appendix A. RS-232 Commands Table A-11. Out-of-lock Commands Table A-11. Out-of-lock Commands Table A-11. Out-of-lock Commands Table A-11. Out-of-lock Commands Set Out-of-Lock Time (-)nPL The “(-)nPL” command sets the amount of delay time (in minutes) following loss of satellite synchronization before an out-of-lock signal is generated and output via rear panel connector. Format: ‘n’...

  • Page 75: Index

    7.0 Index Accessories Broadcast Commands Standard, 1 Broadcast Data-Local, 52 Accuracy, Clock Broadcast Data-UTC, 52 Improved, 32 Broadcast Mode OFF, 51 Acquisition Time, 5 Broadcast Data-Local, 52 Allan Variance Broadcast Data-UTC, 52 configuring front panel, 39 Broadcast Mode Off, 51 configuring serial port, 40 data points, 39 specification, 6...
  • Page 76 Index Disable Control Panel, 56 Input Measurements Display Buffer Command, 64 1 PPS, 37 Configuring, front panel, 38 Configuring, serial port, 40 Methods, 36 Edit Input/Output Connectors, 9 Elevation, 34 Internal Battery Latitude, 34 annunciators, 8 Longitude, 34 Position, 34 EEPROM Status, 53 Electro-Magnetic Interference (EMI), 10 Local Offset, 55...
  • Page 77 Index Specifications frequency stability & spectral purity, 6 Rack mounting, 13 physical characteristics, 10 Rear Panel layout, 13 receiver, 5 Receiver Characteristics, 5 system interface, 9 RS-232 Connector time accuracy, 5 Pin locations. See Specifications Spurious Harmonics, 6 Status Mode Commands DCXO Status, 53 Satellite Tracking, 5 EEPROM Status, 53...

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