General Dynamics DIGITAL TRACKING RECEIVER Operation And Maintenance Manual
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General Dynamics DIGITAL TRACKING RECEIVER Operation And Maintenance Manual

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CG-1220
REV V
JUNE 2013
OPERATION AND MAINTENANCE MANUAL
FOR THE
DIGITAL TRACKING RECEIVER
EXPORT CONTROL WARNING - the disclosure of this
document or its contents to non-U.S. persons, or the
transmission of its contents outside the United States must
be in compliance with U.S. Export Laws and Regulations.
The bearer of this document is under obligation to know the
applicable restrictions for the dissemination of its contents
3750 W. Loop 281
that relate to U.S. Export Laws and Regulations or any other
Longview, Texas 75604
U.S. government approvals.

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March 3, 2025

WHATS THE DATA EXPORT INFO FOR DIGITAL TRACKER RECEIVER, PART NUMBER 128-0162-160 SN# SN# VCJ11081844

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Summary of Contents for General Dynamics DIGITAL TRACKING RECEIVER

  • Page 1 REV V JUNE 2013 OPERATION AND MAINTENANCE MANUAL FOR THE DIGITAL TRACKING RECEIVER EXPORT CONTROL WARNING - the disclosure of this document or its contents to non-U.S. persons, or the transmission of its contents outside the United States must be in compliance with U.S. Export Laws and Regulations.
  • Page 2 Revision History V- Section 1.1.2 L. Shirey C. Bolton 6/7/13 13359 U- Section 4.2.1 & 4.2.5.3 L. Shirey C. Bolton 5/21/13 13339 B. Tanner D. Bulgrien 6/6/12 11559 T – CPU FIRMWARE V2.3 filters S – Revised Section 3.3.1.1.2 D. Cunningham D.

  • Page 3: Proprietary Notice

    PROPRIETARY NOTICE All computer software, technical data, or other information pertaining to the equipment covered by this manual is proprietary to General Dynamics SATCOM Technologies (GDST). Such information is transmitted in this manual or related documents for the benefit of GDST customers and is not to be disclosed to other parties verbally or in writing without prior written approval of GDST.

  • Page 4: Declaration Of Conformity

    Declaration of Conformity The Digital Tracking Receiver (200800/201800/201046/201700) was tested to the following specifications and found to be in compliance with the required criteria on the indicated test date. In accordance with the following directives: 72/23/EEC The Low Voltage Directive and its amending directives.
  • Page 5 PREFACE About This Manual This manual is intended for anyone who uses the General Dynamics SATCOM Technologies Digital Tracking Receiver (DTR). First time users as well as experienced operators will find necessary information about features, installation and operation of the DTR.
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  • Page 7: Table Of Contents

    Table of Contents TABLE OF CONTENTS INTRODUCTION ................. 1-1     General Information Regarding the Digital Tracking Receiver ..... 1-1     1.1.1 Explanation of Safety Symbols ............. 1-1     1.1.2 Technical & Environmental Specifications ..........1-1    ...
  • Page 8 Table of Contents 4.2.3 POL SELECT ..................4-6     4.2.3.1 POL SELECT (Multi Port Option Only) ........4-6     4.2.4 STATUS MENU .................. 4-6     4.2.5 CONFIGURATION MENU ..............4-9     4.2.5.1 COMM PARAMETERS ............4-9  ...

  • Page 9: List Of Figures

    Table of Contents LIST OF FIGURES Figure 1-1 DTR Front Panel ..............1-3     Figure 1-2 DTR Rear Panel ..............1-4     Figure 2-1 DTR Block Diagram ............. 2-1     Figure 3-1 L-Band DTR-I/O Connections ..........3-2  ...
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  • Page 11: Introduction

    Introduction 1.0 INTRODUCTION 1.1 General Information Regarding Digital Tracking Receiver The DTR, developed for satellite tracking, is a fully synthesized tracking receiver. The Digital Signal Processor (DSP) based receiver accepts wideband RF inputs, performs frequency selection, down-converts RF to 70 MHz, and digitally processes the digital samples.

  • Page 12: Dtr Standard Features

    Introduction 1.1.3 DTR Standard Features The following are the standard features of the DTR:  Input frequency range of 945 MHz to 2055 MHz for L-band configuration  Wide input signal dynamic range (70 dB Nominal)  Sensitivity signal range of –40 dBm to –110 dBm ...

  • Page 13: Controls And Indicators

    Introduction Controls and Indicators The controls and indicators located on the DTR front panel provide the normal operator interface. The DTR front panel is shown in Figure 1-1 with its controls and indicators identified. The function of each is detailed in Section 4, Operation. Figure 1-1 DTR Front Panel TABLE 1-1...

  • Page 14: Inputs And Outputs

    Introduction Inputs and Outputs The inputs and outputs located on the DTR rear panel provide the external interfaces. The number of inputs varies with user configuration. The DTR rear panel is shown in Figure 1-2. The function of each input and output is listed in Table 1-2.

  • Page 15: Model Numbers

    Introduction 1.4 Model Numbers The model number of the DTR can be found on the serial/model number tag found on the side of the unit. For reference, the following tables list possible configurations. TABLE 1-3 DTR Model Number Designation Standard Four-Digit Prefix OPTIONS (Only if Applicable) Base No.

  • Page 17: Theory

    Theory 2.0 THEORY 2.1 Standard L-band DTR The use of advanced DSP techniques coupled with conventional analog radio techniques provides enhanced flexibility and sensitivity to the DTR. The L-Band DTR, illustrated by the block diagram in Figure 2-1, takes a RF input signal in the L-Band frequency range and down-converts the signal to a 70 MHz Intermediate Frequency (IF) using a super-heterodyne process.

  • Page 18: Optional Configurations

    Theory 2.2 Optional Configurations 2.2.1 Dual Polarization Input Versatile unit configurations allow dual-receive signal polarization to be connected to separate RF inputs on the DTR’s back panel. Linear polarizations (vertical and horizontal) and circular polarizations (clockwise and counter clockwise) can be connected to the DTR without external combining or switching.

  • Page 19: Installation And Initial Setup

    Installation 3.0 INSTALLATION AND INITIAL SETUP 3.1 Introduction This section provides the information necessary for the installation and initial setup of the DTR. 3.2 Mechanical Installation Using four #10 screws, mount the DTR in a standard 19-inch Electronic Industries Association (EIA) equipment rack. Rear support and/or rack slides are not usually necessary;...

  • Page 20: Input And Output Connections

    Installation 3.3 Input and Output Connections Refer to Figure 3-1 for a diagram showing the possible Input/Output (I/O) connections to the DTR. Table 3-1 provides brief descriptions of each connection or group of connections. Figure 3-1 L-Band DTR-I/O Connections NOTE: ACU I/O connections shown for reference only. The DTR may be interfaced with any ACU having contact closures for beacon selection and a tracking voltage input or a serial link utilizing the DTR’s M&C command set.

  • Page 21: Input/Output Interface Connector Pin-Out

    Installation TABLE 3-1 DESCRIPTION OF I/O CONNECTIONS CONNECTION DESCRIPTION Line POWER ENTRY For 120 V operation, a standard 3-prong National Electrical Manufacturers MODULE Association (NEMA) plug is provided; for 220/230/240 V operation, the same power cable assembly is provided, but the customer may be required to install a more appropriate plug on site.

  • Page 22: Analog Output Voltage Pin-Out

    Installation TABLE 3-2 I/O INTERFACE 1, STANDARD & WIDEBAND CONFIG. PIN NUMBER DESIGNATION FUNCTION 1,14 +OUT, -OUT (DAC#1) Analog Output Voltage #1, Common SHLD_OUT Shield for +/- OUT pair 3,16 +AUX, -AUX (DAC#2) Analog Output Voltage #2, Common SHLD_AUX Shield for +/- AUX pair 4,17 SUM_FLT Summary fault relay contacts.

  • Page 23: Beacon Select Inputs (Gpio 0-3)

    Installation the highlight from the fault display on the DTR LCD and restoring the Summary Fault contact to the normal (no-fault) state, which is CLOSED. However it may not clear the fault condition. If any new faults occur after the Summary fault relay was forced to close by using ACKNOWLEDGE FAULTS, the Summary Fault relay will open again to indicate a new fault condition.

  • Page 24: General Purpose I/O

    Installation SETUP/RESTORE-BEACONS menu or from the I/O Interface #1 inputs while the DTR is in REMOTE control. 3.3.1.1.4 General Purpose I/O GPIO 4, 5, and 8–15 are reserved for future use on the standard product; no connections should be made to these pins. GPIO 4 – 5 and GPIO 8 - 9 are used for POL 3 - 4 and POL 5 - 6 select control lines when used with the Multi Port Option (see Section 3.3.1.1.5).

  • Page 25: Monopulse Option

    Installation 3.3.1.2 Monopulse Option Table 3-4 and 3-5 describes the pin number, designation and function of the two I/O ports. The tables show the monopulse option configuration. Connections to the monopulse tracking plate are described below; refer to the preceding section, Default Configuration, for pins that are not described here.

  • Page 26: Degree Command Control (Gpio 0-1, 10-15)

    Installation 3.3.1.2.1 Degree Command Control (GPIO 0-1, 10-15) The phase shifter outputs are formed through I/O Interface #1 pin groups (5,18) and (6,19) as well as I/O Interface #2 (7,20), (8,21), (9,22), (10,23), (11,24), and (12,25)—common ground driver IC. 3.3.1.2.2 Mute Control (GPIO 2) The mute select control line output is formed through I/O Interface #1 pin group (7,20)--isolated output relay, normally closed.

  • Page 27: Serial Interface Hardware Configuration

    Installation 3.4 Serial Interface Hardware Configuration Serial Ports 1 and 2 are factory set to: TABLE 3-6 DEFAULT SERIAL INTERFACE SETTINGS (PORTS 1&2) Setting Changes Allowed 19200 bps Echo enabled These parameters can be changed using the following menu: Configs/Comm Parameters/Port 1 or Port 2 Newline enabled (CR-LF) Shell = M&C 8 Data bits...

  • Page 28: Default Serial Interface Settings (Port 3)

    Installation Serial Port 3 is factory set to: TABLE 3-9 DEFAULT SERIAL INTERFACE SETTINGS (PORT 3) Setting Changes Allowed 19200 bps Shell = M&C These parameters can be changed using the following menu: Master Address = 0 Configs/Comm Parameters/Port 3 Slave Address = 1 Address Offset = 48 8 Data bits...

  • Page 29: Initial Setup And Power-Up

    Installation 3.5 Initial Setup and Power-up Detailed operating instructions for the DTR are provided in Section 4.0 of this manual. The operator should become familiar with the general operating procedures before continuing. NOTE: Prior to powering the DTR, observe the incoming beacon signal using a spectrum analyzer to ensure proper level (-110 dBm to -40 dBm) and sufficient Carrier to Noise ratio (C/No) (35 dbHz minimum).

  • Page 30: Analog Voltage Output (Dac) Setup

    Installation 3.5.1 Analog Voltage Output (DAC) Setup 1. Tune frequency to obtain desired signal at maximum power level. 2. Use DAC SETUP menu to establish VOLTAGE RANGE, MINIMUM REF POWER LEVEL, and SLOPE. DAC1 provides an analog DC voltage, proportional to signal level, on pins 1 and 14 (+OUT, -OUT) of I/O Interface #1 on the back panel.

  • Page 31: Controlling Dtr With 72Xx Acus Via Serial Port

    Installation 6. On the front panel, press SHIFT-REMOTE to enter REMOTE mode. 7. Test by selecting BEACON 1-4 at the 7134 ACU. 3.5.3 Controlling DTR with 72XX ACUs via Serial port The information below briefly describes the connections for controlling a DTR from a GDST 7200-series ACU.

  • Page 32: Acu Setup

    Installation 3. Setup the communications parameters similar to Table 3-13 below. TABLE 3-13 EXAMPLE OF COMM PARAMETERS Port1 or 2 ACU – Port 1-7 BPS = 19200 (max. 57600) BPS = 19200 (max is 38400) Echo = Disabled Parity = None Newline =CR (only) Data Bits = 8 Shell =M&C Shell...

  • Page 33: Operation

    Operation 4.0 OPERATION This section of the manual explains in detail how to operate the DTR. Table 4-1 describes the function of each control and indicator shown in Figure 4-1. Figure 4-1 DTR Controls and Indicators TABLE 4-1 CONTROLS AND INDICATORS CONTROL OR INDICATOR FUNCTION 1.

  • Page 34: Figure 4-2 Receiver Status Display Screen

    Operation The Receiver Status Display, shown below in Figure 4-2, displays the frequency, signal source and levels, faults, etc. along with the Main Menu of the DTR. Table 4-2 describes each display feature. Figure 4-2 Receiver Status Display Screen TABLE 4-2 RECEIVER STATUS DISPLAY CONTROL OR INDICATOR FUNCTION...

  • Page 35: Understanding The Dtr Menu Structure

    Operation 4.1 Understanding the DTR Menu Structure The MAIN MENU on the Receiver Status Display contains items which support the various system interfaces and control system parameters. An arrow ( or ) at the top-right or bottom-right of the menu display indicates that additional menu items are available.

  • Page 36: Executes An Action

    Operation 4.1.2.3 Executes an Action A menu such as [ACKNOWLEDGE FAULTS] does not have submenus and does not open an editor. Instead it performs an action and maintains the current menu screen. CG-1220 DTR...

  • Page 37: Main Menu Items

    Operation 4.2 Main Menu Items The menus used to support the system interfaces and control system parameters follow. See Appendix B for a complete Menu Tree. The following are considered to be the MAIN MENU items:  1 - FREQUENCY ...

  • Page 38: Pol Select

    Operation 4.2.3 POL SELECT [POL SELECT] allows the user to select which POL input is the active port for tracking. The numeral “1” or “2” will appear next to the POL SELECT menu in the main menu, indicating which POL input is active. This setting is used to control an RF switch internal to the DTR, and may also be used to control an external switch using I/O Interface #1 on the back panel.
  • Page 39 Operation  SPU SERIAL LINK STATS – This screen displays SPU RS422 serial link statistics separately for the MCU and DSP. Timeouts are displayed when the CPU did not get a response within 100ms. Errors are logged when an unexpected response did not match internal protocol. The percentage of errors plus timeouts versus the total number of commands is displayed.
  • Page 40 Operation o SPDTX4 SW IN - x bit 3 for SW1, 2 for 2, etc. y is the configuration that the SPDT switches (one to four) are in. The first two characters together are both SW1 and SW2, used for RF input selection, which indicate whether the switches are set to their "Lo"w or "Hi"gh band.

  • Page 41: Configuration Menu

    Operation Status frames contain signal for the front panel and M&C interface.  Spectrum frames contain data for the SPECTRAL DISPLAY.  Monopulse frames, either on time or late, contain signal and error vector  data for monopulse mode. Monopulse used is the number of frames transmitted out via the M&C monopulse interface.
  • Page 42 Operation  PORT 1, PORT 2 – These two menus configure the port for M&C communications. Port 1 is RS-232 only, while Port 2 allows RS-232 or RS- 422 connections. See Table 3-6 for factory set data parameters for these ports.

  • Page 43: Receiver Operation

    Operation SLAVE ADDRESS is the address of this unit (a slave, controlled) on the  multi-drop RS-485 bus. There are a maximum of 32 addresses, ranging from 0 to 31. On the bus, the actual ASCII value used for addressing is the address assigned here plus the value of the parameter ADDRESS OFFSET.
  • Page 44 Operation DAC1 and DAC2 SETUPS – DAC1 provides an analog DC voltage  proportional to signal level on pins 1 and 14 (+OUT, -OUT) of I/O Interface #1 on the back panel. DAC2 provides an analog DC voltage proportional to signal level on pins 3 and 16 (+AUX, -AUX) of I/O Interface #1 on the back panel.

  • Page 45: Conversion Bands

    Operation 2. FFT Noise - Displays noise density within the selected bandwidth. This mode is useful when tracking a broadband signal (Video or digital). However due to FFT processing time the response is slightly slower than that of the RMS Density mode process time. 3.

  • Page 46: Beacon Setup

    Operation  LOW FREQUENCY is the low-end frequency of the down-conversion device that supports this band. Factory default is the low-end frequency of the internal BDC. If utilizing an external down-conversion device, it should be that device’s low-end frequency.  HIGH FREQUENCY is the high-end frequency of the down-conversion device that supports this band.
  • Page 47 Operation operation. Enable to exclude the error channel for normal operation. NOTE: This can also be set by M&C commands in TRL-Emulation.  MUTE-FAULT enables or disables the mute switch fault. This feature should be disabled for monopulse plates which do not support mute switch feedback.

  • Page 48: System Memory

    Operation 4.2.5.6 SYSTEM MEMORY The SYSTEM MEMORY menu contains functions related to the storage of system parameters in nonvolatile RAM (NVRAM).  FACTORY CALIBRATION contains system parameters that are calibrated in factory and are NOT normally changed by the user. CHANGING THE PARAMETERS IN THIS MENU MAY DEGRADE THE PERFORMANCE OF THE DTR.

  • Page 49: Interface Options

    Operation  SET DATE AND TIME The port used to set the date or time (local or remote) must be the one in control. SET DATE allows the current date to be set. In the M&C shell, the  format is MMDDYYYY and al fields must be set. SET TIME allows the current time to be set.

  • Page 50: Tests

    Operation 4.2.7 TESTS The [TESTS] menu provides system integrity tests and is intended primarily for factory testing. Use of some tests may obscure real-time data, and others may temporarily affect the performance of the receiver.  LCD DISPLAY tests every pixel of the LCD by drawing lines in two alternating patterns.

  • Page 51: Maintenance

    Maintenance 5.0 MAINTENANCE 5.1 Inspection and Preventive Maintenance Scheduled maintenance should include the following:  Check the inside of the unit for excessive dust accumulation every 6 to 12 months. If excessive dust is found, disconnect the power cord from the DTR and remove the dust using a clean, dry (non-oiled) high-pressure air source.
  • Page 52 Maintenance Before removing the original battery, acquire the GDST part #BBA003 (Panasonic CR2354). This 3V Lithium coin-type battery can be carefully pried out with a small screwdriver and the new battery can be replaced in reverse fashion. IMPORTANT: The “+” side of the battery faces up. CG-1220 DTR...

  • Page 53: System Spares

    Repairs must be made by qualified service technicians under the direction of General Dynamics SATCOM Technologies Technical Support ONLY. Failure to follow this recommendation will void your warranty. The following spare parts can be ordered from General Dynamics SATCOM Technologies. TABLE 5-1...
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  • Page 55: Engineering Drawings

    Engineering Drawings 6.0 ENGINEERING DRAWINGS This section of the manual contains the following engineering drawing: 201807 Digital Tracking Receiver, Stock Level Drawing CG-1220 DTR...
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  • Page 57: Appendix A - Technical Support

    If you have any questions or problems that are not addressed by the manual, there are several ways to contact our technical support team. Prior to contacting General Dynamics SATCOM Technologies, please navigate to STATUS\DISPLAY VERSION and have the DTR’s Model, Serial, and corresponding software versions readily available.
  • Page 58 EQUIPMENT: (INCLUDE MODEL, NAME, AND SERIAL NUMBER OF ALL PERTINENT EQUIPMENT) S/N: 1. Model: _________________ 2. Model: _________________ 3. Model: _________________ 4. Model: _________________ OTHER EQUIPMENT TECHNICAL QUESTION/PROBLEM: RESPONSE FROM GENERAL DYNAMICS: GDST TROUBLESHOOTER DATE TIME REF. NO. CG-1220 DTR...

  • Page 59: Appendix B - Menu Tree

    Menu Tree APPENDIX B – MENU TREE This Appendix contains the menu tree for the DTR. CG-1220 DTR...
  • Page 60 Menu Tree CG-1220 DTR...

  • Page 61: Appendix C - Remote M&C Protocol

    Remote M&C Protocol APPENDIX C – REMOTE M&C PROTOCOL This Appendix contains the remote M&C protocol for the DTR (CG-6073). CG-1220 DTR...
  • Page 62 JUN 2012 REMOTE M&C PROTOCOL FOR THE DIGITAL TRACKING RECEIVER EXPORT CONTROL WARNING - the disclosure of this document or its contents to non-U.S. persons, or the transmission of its contents outside the United States must be in compliance with U.S.
  • Page 63 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) Revision History R – CPU Firmware V2.3 filters B. Tanner D. Bulgrien 6/6/12 11559 P – Updates B. Tanner D. Harrison 8/3/10 9910 N – Updates M. Neely G. Branch 4/25/06 6629 M –...

  • Page 64: Table

    Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) TABLE OF CONTENTS 1.0 INTRODUCTION ................5 Syntax Diagrams ................. 5 2.0 OVERVIEW ..................6 3.0 GENERAL PROTOCOL ..............7 Range Details ................8 Error Messages ................8 Status Requests ................9 4.0 DTR MENU TREE WITH M&C COMMANDS .........
  • Page 65 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) THIS PAGE INTENTIONALLY LEFT BLANK...

  • Page 66: Introduction

    DTR REMOTE MONITOR AND CONTROL 1.0 INTRODUCTION This appendix contains the Digital Tracking Receiver (DTR) Remote Monitor and Control (M&C) protocol applicable to version 2.3 and higher of the DTR CPU firmware. The M&C interface is provided to assist in the setup of remote communications with the DTR.

  • Page 67: Overview

    Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) 2.0 OVERVIEW The M&C shell (command line interface) is analogous to a typical computer operating system shell in MS-DOS or UNIX. The menus can be thought of as a hierarchical "directory."...

  • Page 68: General Protocol

    Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) 3.0 GENERAL PROTOCOL The general format for transactions being sent to and from the DTR M&C interface is described below. Format for sending a command is: command [arguments]<CR> Format for information returned is: [data)] [(newline)(data)] ...

  • Page 69: Range Details

    Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) 3.1 Range Details Sending a D argument to any editable item returns format information. Prints the format and/or limits required for editing. Ilo hi Integer reply: Range lo to hi, inclusive. Example: >...

  • Page 70: Status Requests

    Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) 3.3 Status Requests Status requests are obtained by polling the DTR for information. All status requests send by default only the information that has changed since the last request. Each request has an option to force transmission of all status information.

  • Page 71: Dtr Menu Tree With M&C Commands

    Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) 4.0 DTR MENU TREE WITH M&C COMMANDS The DTR listing shows all of the menu items, user editable parameters and executable commands. The listing also shows the M&C command that is equal to the menu item. Only the MAIN MENU items are shown in bold letters while all of the OPTIONAL items or menus that contain optional features and choices are italicized.
  • Page 72 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) Continued on the next page MAIN MENU TYPE PARENT MENU CONFIGS…(CONTINUED) Sub Menu MAIN MENU BANDS (“CONVERSION BANDS”)… Sub Menu CONFIGS (ONLY in units with BDC) BAND-1… Sub Menu BANDS BDC-GAIN Data Editor...
  • Page 73 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) MAIN MENU TYPE PARENT MENU TESTS… Sub Menu MAIN MENU LCD-TEST (“LCD DISPLAY”) Executable TESTS LEDS-TEST Executable TESTS FIFO-TEST Executable TESTS TIME-DOMAIN (“DISPLAY TIME DOMAIN”) Executable TESTS FACTORY-BURN-IN Executable TESTS...

  • Page 74: Monitor And Control Commands

    Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) 5.0 MONITOR AND CONTROL COMMANDS ACKNOWLEDGE-FAULTS Path: / ACKNOWLEDGE-FAULTS Type: Executable Syntax: ACKNOWLEDGE-FAULTS Notes: ACKNOWLEDGE FAULTS clears current alarm conditions. The fault message remains displayed on the screen, but no longer causes an alarm and the summary fault contact closure is no longer asserted by this fault.
  • Page 75 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) ATTENUATION Path: / CONFIGS OPERATION ANALOG-OUTPUTS ATTENUATION Type: Data Editor Syntax: ATTENUATION [= n] | [D] Range: Real: 0.0 .. 50.0 Notes: ATTENUATION controls the lower end of the DAC voltage output, in conjunction with the parameters in the ANALOG OUTPUTS configuration menu.
  • Page 76 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) BAND 4 (OPTIONAL-Depending on RF Range) Path: / CONFIGS BANDS BAND-4 Type: Sub Menu Syntax: BAND-4 Notes: The conversion parameters of the Block Downconverter to support this BAND must be defined here to provide conversion to L-Band frequency.
  • Page 77 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) BDC GAIN (OPTIONAL-Depending on RF Range) Path: / CONFIGS BANDS BAND-3 BDC-GAIN Type: Data Editor Syntax: BDC-GAIN [= n] | [D] Range: Real: 0.0 .. 31.0 Notes: The GAIN in dB, of the BDC and attenuator pair that supports this band. The typical range for this parameter is 2-4 dB when using BDCs and 10 dB pads as provided by GDST.
  • Page 78 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) Path: / CONFIGS COMM-PARAM PORT-1 BPS Type: Data Editor Syntax: BPS [= n] | [D] Range: Integer: 0 .. 6 1200 2400 4800 9600 19200 38400 57600 Notes: BPS refers to the bits per second (BAUD) transmitted/received by the port. Path: / CONFIGS COMM-PARAM PORT-2 BPS / CONFIGS COMM-PARAM PORT-3 BPS...
  • Page 79 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) CONFIGS Path: / CONFIGS Type: Sub Menu Syntax: CONFIGS Notes: The CONFIGS menu provides access to all configuration parameters; from serial port communications parameters to receiver operation parameters and user interface options.
  • Page 80 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) DAC2 OUTPUT Path: / CONFIGS OPERATION ANALOG-OUTPUTS DAC2 DAC2-OUTPUT Type: Sub Menu Syntax: DAC2-OUTPUT Range: Integer: 0 .. 1 Disabled Enabled. Notes: Enables or Disables this DAC output. DAC1 SETUP Path: / CONFIGS OPERATION ANALOG-OUTPUTS DAC1 Type:...

  • Page 81: Display Version

    Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) DETECTION TYPE (Only in Wideband Units) Path: / CONFIGS OPERATION DETECTION Type: Data Editor Syntax: DETECTION [= n] | [D] Range: Integer: 0 .. 3 FFT SIGNAL RMS POWER FFT NOISE RMS DENSITY Notes:...
  • Page 82 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) ECHO Path: / CONFIGS COMM-PARAM PORT-1 ECHO Type: Data Editor Syntax: ECHO [= n] | [D] Range: Integer: 0 .. 1 Disabled Enabled Notes: ECHO, when enabled, returns the received character to the port. ECHO Path: / CONFIGS COMM-PARAM PORT-2 ECHO...
  • Page 83 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) FACTORY CALIBRATION Path: / CONFIGS MEMORY CALIBRATION Type: Sub Menu Syntax: CALIBRATION Notes: Contains system parameters that are calibrated in factory and are NOT normally changed by the user. CHANGING THE PARAMETERS IN THIS MENU MAY DEGRADE THE PERFORMANCE OF THE DTR.
  • Page 84 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) FIFO-TEST Path: / TESTS FIFO-TEST Type: Executable Syntax: FIFO-TEST Notes: This diagnostic displays a test pattern received from the SPU, in hexadecimal values. The pattern should be like below. In case of failure, a small “x”...
  • Page 85 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) FORCE CLEAR FAULTS Path: / CONFIGS MEMORY CLEAR-FAULTS Type: Executable Syntax: CLEAR-FAULTS Notes: FORCE CLEAR FAULTS forces the system to clear all faults, Faults that are set periodically will appear again. FREQ #1 IF OVERRIDE Path: / CONFIGS MEMORY CALIBRATION IF-OVERRIDE F1-OVERRIDE...
  • Page 86 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) FREQ #3 IF OVERRIDE Path: / CONFIGS MEMORY CALIBRATION IF-OVERRIDE F3-OVERRIDE Type: Data Editor Syntax: F3OVERRIDE [= n] | [D] Range: Integer: 0 .. 15 0 – Automatic 4 – 829.6 8 –...
  • Page 87 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) HARDWARE OPTIONS (v1.19.08 or later) Path: / CONFIGS MEMORY CALIBRATION OPTIONS Type: Sub Menu Syntax: OPTIONS Notes: Contains settings for special hardware configurations. These settings are typically made in the factory and should not be changed under normal circumstances. CHANGING THE PARAMETERS IN THIS MENU MAY DEGRADE THE PERFORMANCE OF THE DTR.
  • Page 88 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) HIGH FREQ (OPTIONAL-Depending on RF Range) Path: / CONFIGS BANDS BAND-3 HIGH-FREQ Type: Data Editor Syntax: HIGH-FREQ [= n] | [D] Range: Real: 945.000 .. 13000.000 (v2.0.7 or later) Real: 949.000 ..
  • Page 89 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) INPUT ATTEN (v1.19.15 or later) Path: / INPUT-ATTEN Type: Data Editor Syntax: INPUT-ATTEN [= n] | [D] Range: Integer: 0 .. 15 0 – 0 dB 2 – 4 dB 4 –...

  • Page 90: Lcd Display

    Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) LBAND-DEFAULTS (v1.19.07 or later) Path: / CONFIGS BANDS BAND-1 LBAND-DEFAULTS Type: Executable Syntax: LBAND-DEFAULTS Notes: Sets BAND-1 parameters to L-Band defaults. From v1.16.51 to v1.19.06, this parameter was called IS-LBAND?. LCD DISPLAY Path: / CONFIGS TESTS LCD-TEST...
  • Page 91 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) LOW FREQ (OPTIONAL-Depending on RF Range) Path: / CONFIGS BANDS BAND-1 LOW-FREQ Type: Data Editor Syntax: LOW-FREQ [= n] | [D] Range: Real: 945.000 .. 13000.000 (v2.0.7 or later) Real: 949.000 ..
  • Page 92 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) LOW FREQ (OPTIONAL-Depending on RF Range) Path: / CONFIGS BANDS BAND-4 LOW-FREQ Type: Data Editor Syntax: LOW-FREQ [= n] | [D] Range: Real: 945.000 .. 13000.000 (v2.0.7 or later) Real: 949.000 ..

  • Page 93: Message Log

    Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) MANUAL IF OVERRIDE Path: / CONFIGS MEMORY CALIBRATION IF-OVERRIDE Type: Sub Menu Syntax: IF-OVERRIDE Notes: The IF OVERRIDE menu allows the user to manually select the IF used by the L- Band front end.
  • Page 94 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) MINIMUM REF LVL Path: / CONFIGS OPERATION ANALOG-OUTPUTS DAC2 DAC2-REF Type: Data Editor Syntax: REFERENCE [= n] | [D] Range: Real: -150.0 .. 20.0 Notes: The MINIMUM REF POWER LVL is the minimum input power level reference which corresponds to minimum DAC voltage output.
  • Page 95 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) MODE Path: / CONFIGS MONOPULSE Type: Data Editor Syntax: MODE [= n] | [D] Range: Integer: 0 .. 1 Vectors Levels Notes: MODE sets the type of monopulse output of START, either two error vectors with sum for normal operation or four phase levels for diagnostics.
  • Page 96 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) NEWLINE Path: / CONFIGS COMM-PARAM PORT-2 NEWLINE Type: Data Editor Syntax: NEWLINE [= n] | [D] Range: Integer: 0 .. 1 Disabled Enabled Notes: NEWLINE, when enabled, sends a carriage-return line-feed at the end of the command line.
  • Page 97 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) OSC FREQ (OPTIONAL-Depending on RF Range) Path: / CONFIGS BANDS BAND-3 OSC-FREQ Type: Data Editor Syntax: OSC-FREQ [= n] | [D] Range: Real: 100.000 .. 15000.000 Notes: LOCAL OSCILLATOR of the BDC that supports this band. Typical configurations: S-band = 3750MHz C-band = 5150MHz X-band = 6300MHz...
  • Page 98 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) POL SELECT Path: / POL SELECT Type: Data Editor Syntax: POL-SELECT [= n] | [D] Range: Integer: 1 .. 2 Pol 1 Pol 2 Notes: POL SELECT selects which POL input will be used for tracking. This setting is used to control an RF switch internal to the DTR, and may also be used to control an external switch using I/O Interface #1 on the back panel.
  • Page 99 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) PORT 2 Path: / CONFIGS COMM-PARAM PORT-2 Type: Sub Menu Syntax: PORT-2 Notes: PORT 2 is used for M&C operation and allows RS-232 and RS-422 connections. . The data parameters are set in factory to: 8 Data bits, 1 Stop bit, No Parity. PORT 2 is available on the back panel as a 9 pin D subminiature socket connector.

  • Page 100: Remote Control

    Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) RATE Path: / CONFIGS MONOPULSE Type: Data Editor Syntax: RATE [= n] | [D] Range: Integer: -1 .. 10000 Notes: RATE is the minimum number of milliseconds between the monopulse data transmissions of START.
  • Page 101 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) RESET PORT Path: / CONFIGS COMM-PARAM PORT-1 RESET-PORT Type: Executable Syntax: RESET-PORT Notes: RESET-PORT resets the given port. The electrical interface is initialized and the shell (if any) that was running on it is restarted. RESET PORT Path: / CONFIGS COMM-PARAM PORT-2 RESET-PORT...
  • Page 102 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) RESTORE BEACON1 Path: / CONFIGS BEACONS RESTORE-BEACONS RESTORE-BEACON1 Type: Executable Syntax: RESTORE-BEACON1 Notes: Executing each item in this menu will RESTORE values previously stored as a BEACON state: FREQUENCY, INPUT ATTEN, POL SELECT, FILTER, SLOPE, VOLT RANGE, MIN REF LVL, and ATTENUATION.
  • Page 103 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) RESTORE ROM DEFAULTS Path: / CONFIGS MEMORY RESTORE-TO-ROM-DEFAULTS Type: Data Editor Syntax: RESTORE-TO-ROM-DEFAULTS [= n] | [D] Range: Integer: 0 .. 1 Notes: Selecting YES and pressing ENTER restores all DTR parameters to factory ROM defaults.

  • Page 104: Set Time

    Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) SET TIME Path: / CONFIGS MEMORY DATE&TIME SET-TIME Type: Data Editor Syntax: SET-TIME [= n] | [D] Range: Integer: 000000 to 235959 (Must be a valid time) Notes: Changing this changes the current time ( in 24 hour format). Under the menu tree shell the format is HHMMSS and all fields must be set.
  • Page 105 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) SLAVE ADDRESS (v 1.19.06 or later) Path: / CONFIGS COMM-PARAM PORT-3 SLAVE-ADDRESS Type: Data Editor Syntax: SLAVE-ADDRESS [= n] | [D] Range: Integer: 0 .. 31 Notes: SLAVE-ADDRESS is the address of this unit (a slave, controlled) on the multi-drop RS-485 bus.

  • Page 106: Figure 4-3 Spectral Display

    Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) SPECTRAL DISPLAY (v2.0.7 or later) Path: / STATUS SPECTRAL-DISPLAY Type: Executable Syntax: SPECTRAL-DISPLAY Notes: SPECTRAL DISPLAY plots the signal's frequency components in a graphical manner similar to a spectrum analyzer. Use the Spin Knob to adjust frequency. Soft keys A/B change step size.
  • Page 107 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) SPU SERIAL LINK STATS Path: / STATUS SPU-DIAG Type: Executable Syntax: SPU-DIAG Notes: Displays the SPU RS422 serial link statistics separated by destination (MCU and DSP): Timeouts – the CPU did not get a response within 100mSec. Errors –...
  • Page 108 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) STORE BEACON1 Path: / CONFIGS BEACONS STORE-BEACONS STORE-BEACON1 Type: Executable Syntax: STORE-BEACON1 Notes: Executing each item in this menu will STORE CURRENT values of the following parameters as a BEACON state: FREQUENCY, INPUT ATTEN, POL SELECT, FILTER, SLOPE, VOLT RANGE, MIN REF LVL, and ATTENUATION.
  • Page 109 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) SYSTEM MEMORY Path: / CONFIGS MEMORY Type: Sub Menu Syntax: MEMORY Notes: The MEMORY menu contains commands relating to the storage of system parameters that are stored in nonvolatile RAM (NVRAM). TESTS Path: / TESTS...
  • Page 110 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) VOLTAGE RANGE Path: / CONFIGS OPERATION ANALOG-OUTPUTS DAC2 DAC2-RANGE Type: Data Editor Syntax: DAC2-RANGE [= n] | [D] Range: Integer: 0 .. 2 0 to +10 -10 to +10 -5 to +5 Notes: The DC VOLTAGE RANGE of the Digital to Analog Converter.

  • Page 111: Keyword Commands

    Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) 5.1 Keyword Commands A keyword is a command that is always accessible on the command line, regardless of the current menu or system configuration. Unlike generic menu items, which are subject to change with firmware revisions, the keywords form the basis of the command-line interface, and thus will remain available for future revisions.
  • Page 112 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) Path: Keyword Type: Executable Syntax: Notes: Aliases: "HELP", "help", and "?". The command interpreter is case sensitive. Most items are in caps. If a keyword or item number follows, then its help is displayed. Type KEYS in followed by carriage-return for a list of keywords.
  • Page 113 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) EXIT Path: Keyword Type: Executable Syntax: EXIT Notes: This keyword exits and restarts the current menu tree shell or a sub-shell such as TRL EMULATION MODE. On Monopulse units, it exits Monopulse mode. See: Keyword X1, Executable START...
  • Page 114 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) Path: Keyword Type: Executable Syntax: F [0] | [n] Range: Hexmask - 0..FF Notes: The F request displays a hex bitmap for each fault table specified in the mask. The mask is supplied in hex.
  • Page 115 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) FINDEX Path: Keyword Type: Executable Syntax: FINDEX Notes: This keyword displays version of images in FLASH FLASH Path: Keyword Type: Executable Syntax: FLASH n Range: Integer: 0 .. 3 Notes: This keyword uploads a software update using XMODEM (CRC) and programs it into the given bank of flash memory.
  • Page 116 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) help Path: Keyword Type: Executable Syntax: help Notes: Aliases: "HELP" and "?". The command interpreter is case-sensitive. Most items are in caps. If a keyword or item number follows, then its help is displayed. Type KEYS in followed by carriage-return for a list of keywords.
  • Page 117 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) LIST-FAULTS Path: Keyword Type: Executable Syntax: LIST-FAULTS Notes: Lists all fault names along with their LCD text names, and their current status. This report is in verbose ASCII format, for readability. For periodic status polling, us the F keyword (HEX bitmapped fault report).
  • Page 118 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) Path: Keyword Type: Executable Syntax: Notes: MC (Messages Clear) clears the message log. Path: Keyword Type: Executable Syntax: Notes: MD (Messages Display) dumps the message log to the terminal. Path: Keyword Type:...
  • Page 119 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) MTREE-HELPS Path: Keyword Type: Executable Syntax: MTREE-HELPS Notes: This keyword lists the entire Menu Tree along with the help screens and menu tree shell name for each item. Path: Keyword Type: Executable...
  • Page 120 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) Path: Keyword Type: Executable Syntax: Notes: Native and TRL EMULATION MODE keyword. This keyword requests receiver status; the response is formatted with character separators for each field and fixed field widths as follows: BbbCcEeeFffffffffVvvvvAaaaIi Sample:...
  • Page 121 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) Path: Keyword Type: Executable Syntax: Notes: This keywords displays which port is being used by the current terminal, and which port is the one that has control of the DTR. Path: Keyword Type:...

  • Page 122: Message Format

    Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) 6.0 RS-485 PROTOCOL FOR DTR MULTI-DROP BUS For M&C systems that need to communicate over RS-485, there are additional requirements and restrictions in the DTR M&C protocol. The M&C is the only shell offered on the RS-485 bus. The command line format is different since multiple devices can be present on the multi-drop RS-485 bus.
  • Page 123 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) Restrictions Normally multiple commands in the MT M&C shell can be queued up on one line. In the RS-485 shell, commands can be queued, but not after any command that has a response. Only one command with a response can be on a line, and it must be the last command on the line.
  • Page 124 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) Added Menu Items: (v1.19.06 or later) SHELL Path: / CONFIGS COMM-PARAM PORT-3 SHELL Type: Data Editor Syntax: SHELL [= n] | [D] Range: Integer: 0 .. 1 Disabled M&C Shell Notes: SHELL determines the communications protocol used on this serial port.
  • Page 125 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) SLAVE ADDRESS Path: / CONFIGS COMM-PARAM PORT-3 SLAVE-ADDRESS Type: Data Editor Syntax: SLAVE-ADDRESS [= n] | [D] Range: Integer: 0 .. 31 Notes: SLAVE ADDRESS is the address of this unit (a slave, controlled) on the multi-drop RS-485 bus.

  • Page 126: Trl Emulation Mode

    Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) 7.0 TRL EMULATION MODE The TRL EMULATION MODE allows legacy equipment to communicate with the DTR as if it were a GDST TRL tracking receiver. It is obsolete and should not be used for new applications.
  • Page 127 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, Jun, 2012) Start Monopulse diagnostic mode (Monopulse units only). The port does not have to be in control but all faults must be cleared. The mode exits if a fault is set. Use Xn to stop. Usage: Ln n is 0 or 1 and determines whether the monopulse mute switch is turned off or on, respectively.
  • Page 128 Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012) Gets or sets the Monopulse data transfer rate. (Monopulse units only) Usage: Y?|[-]n[n...] m "Y?" queries the millisecond interval of the monopulse data transmission. "Yn m" sets the interval, where n is -1 or the transfer interval in 1228 counts per 4ms and m is ignored but must be present.
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  • Page 130 Remote M&C Protocol THIS PAGE INTENTIONALLY LEFT BLANK CG-1220 DTR...
  • Page 131 Acronyms & Abbreviations APPENDIX D – ACRONYMS & ABBREVIATIONS The following is a list of acronyms and abbreviations that are used by General Dynamics SATCOM Technologies and may appear in this manual. A/D..........Analog to Digital A ...........Amperes AC..........Alternating Current ACU..........Antenna Control Unit A/D..........Analog-to-Digital...
  • Page 132 Acronyms & Abbreviations GHz ..........Gigahertz GND..........ground GPIO ..........General Purpose Input Output HHMMSS........Hours Minutes Seconds (e.g. 120030) Hz ..........Hertz I/O ..........Input/Output IC ..........Integrated Circuit IEC ..........International Electrotechnical Commission IF...........Intermediate Frequency in...........Inches kg..........Kilograms lbs ..........Pounds LCD ..........Liquid Crystal Display LED..........Light-Emitting Diode LNA ..........Low Noise Amplifier LSB..........Least Significant Bit m ..........Meters M&C ..........Monitor and Control...
  • Page 133 Acronyms & Abbreviations TX ..........Transmit V ...........Volts VAC..........Volts AC VDC..........Volts DC VSWR ..........Voltage Standing-Wave Ratio CG-1220 DTR...
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