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Symmetricom TM7000 User Manual

Symmetricom TM7000 User Manual

Tymmachine time code generator/translator
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TM7000
TymMachine Time Code
Generator/Translator
Revision D
User's Guide
8500-0101
March, 2006

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Summary of Contents for Symmetricom TM7000

  • Page 1 TM7000 TymMachine Time Code Generator/Translator Revision D User’s Guide 8500-0101 March, 2006...

  • Page 2: Table Of Contents

    E. RS-232 TIME WORD OUTPUT (9 PIN D CONNECTOR J9)....1-8 F. IRIG B AC CODE OUTPUT (BNC J10) ............. 1-9 G. IRIG B DC CODE OUTPUT (BNC J11) ............1-9 H. MULTICODE AC CODE OUTPUT (BNC J12) ........1-10 Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D)
  • Page 3 3.2.4 SELECT SWITCHS .................... 3-2 3.2.5 INTERNAL JUMPERS (LOCATED ON ASS’Y 100007) ........ 3-2 A. J21 RS-232 TALKER OUTPUT SELECT............ 3-2 B. J20 MULTI-ENCODER OUTPUT SELECT..........3-3 C. J22 REAR PANEL BNC J5 CONFIGURATION......... 3-3 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
  • Page 4 A. PACKED BCD FORMAT................3-28 B. ASCII FORMAT ..................3-28 3.11.2 PROGRAMMING ..................... 3-28 3.11.3 TO ENTER SETUP AND CONTROL DATA..........3-28 3.11.4 TO REQUEST OUTPUT OF TIME AND STATUS MESSAGES ....3-29 Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D)
  • Page 5 3.12.5 MODES OF OPERATION................3-43 A. SYNCHRONOUS MODE................3-43 B. ASYNCHRONOUS MODE ................ 3-44 3.12.6 MESSAGE FORMAT ..................3-45 A. ASCII/BCD FORMAT ................3-45 B. BAUD RATE....................3-46 C. STOP BIT ....................3-46 D. PARITY ....................... 3-46 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
  • Page 6 5.3.1 POWER-UP SELF TEST ..................5-3 5.3.2 GENERATOR (part of STCG) ................5-4 5.3.3 TRANSLATOR (part of STCG)................5-4 5.3.4 SYSTEM TROUBLES ..................5-5 5.3.5 MANUAL SYSTEM RESET ................5-7 REPLACING AN OPTION MODULE................5-7 Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D)
  • Page 7 TM Opt 18 Slow Code....................A-41 TM Opt 27 Video Time Inserter ................A-44 TM Opt 32 Distribution Module, 600Ω Driver ............A-51 TM Opt 39 Distribution Module, 50Ω Driver ............A-53 TM Opt 45 Buffer/Pulse Rate Module ..............A-56 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 8: Chapter One General Description

    1.1 USER'S GUIDE SUMMARY This User’s Guide is divided into the following chapters: CHAPTER ONE - GENERAL INFORMATION This chapter includes a general description of the TM7000 and provides technical specifications. CHAPTER TWO - INSTALLATION Describes initial inspection, preparation for use, and installation.

  • Page 9: Purpose Of Equipment

    POWER switch, are located on the front panel. The basic and optional plug-in assemblies may have switches or jumpers to set them up in specified configurations. Refer to the Front View of the TM7000 (Figure 1.3.1) and the Rear View of the TM7000 (Figure 1.3.2) on the next page.

  • Page 10: Specifications

    TymMachine. Changes or additions to these specifications, if any, are listed in Appendix A. 1.4.1 INPUTS AC POWER (POWER ENTRY MODULE J1) 85 VAC to 264 VAC ±10% 47 - 440 Hz Less than 40 VA Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D)

  • Page 11: Input/Output (9 Pin D Connector J2)

    The following Table 1-2 lists the input specifications: Table 1-2 High Stability External Sine Wave Input (J5) Frequency 1-10MHz. Amplitude 1 volt peak-to-peak to 5 volts peak- to-peak square wave. Input Impedance 50Ω, nominal. TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
  • Page 12 GENERAL DESCRIPTION Note: In order for this feature to operate, an internal jumper must be properly selected. See Operation, Chapter Three. EXT. OSC. INPUT ENABLED Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D)

  • Page 13: Pulse/1Pps Input (Bnc J6)

    AN/GSQ-53 250Hz (Use XR3). AN/GSQ-53 1kHz (Use 2137). Modulation Ratio 2:1 to 6:1. Input Signal Level 0.1 volts to 10.0 volts peak-to-peak. Input Impedance Greater than 50kΩ, single-ended. Frequency Range 30Hz to 2MHz. TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 14: 1.4.2 Outputs

    MULTICODE DC CODE OUTPUT (BNC J4) This output produces a DC level shift serial code that contains the time value within the TM7000. It is generated by the Multi-Encoder section. The time code format is determined by front panel menu selection.

  • Page 15: 10Mhz Sine Wave Output (Bnc J5)

    This printer output port can output data to an RS-232 compatible serial printer or terminal. The data (time and status) can be output in an ASCII or BCD format, selectable by DIP switches. Refer to Chapter Three for operation. Table 1-8 lists the connector pin assignments. TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 16: Irig B Ac Code Output (Bnc J10)

    Connector J11, the IRIG B (B000) Serial DC Level Shift Time Code output from the Generator contains Time-of-Year plus CF (Control Functions) and STOD (Seconds Time-of-Day). Table 1-10 shows the specifications of the IRIG B DC Serial Time Code output. Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D)

  • Page 17: Multicode Ac Code Output (Bnc J12)

    - not the specifications of the unit’s 10MHz sine wave output. VCXO (VOLTAGE CONTROLLED TEMPERATURE COMPENSATED CRYSTAL OSCILLATOR) with the following specifications: Output Frequency/Waveform 10MHz Sine Wave. 1-10 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 18: Low Noise Oven Oscillator

    Mechanical Frequency Adjust ±1PPM (minimum) / ±3PPM (maximum). The following specifications are for the 10MHz sine wave output (2.8 volts peak- to-peak terminated into 50Ω) available on rear panel BNC connector J5: Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) 1-11...

  • Page 19: 1.4.4 Environment

    * Long Term Storage (1 year, -20 C to +35 Because the TM7000 contains a battery, when storing for more than 1 year, charge at least once a year (i.e. turn on the unit and let it run for at least 24 hours) to prevent battery leakage and deterioration in performance due to self-discharging.

  • Page 20: Safety Precautions And Health Hazards

    This voltage is only exposed to personnel when the Top Cover of the unit is removed. This High Voltage exists in the right rear corner of the unit as viewed from the front. Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) 1-13...
  • Page 21 CHAPTER ONE This Page Intentionally Left Blank 1-14 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 22: Chapter Two Installation

    CHAPTER TWO INSTALLATION INTRODUCTION This section provides an installation procedure for the TM7000 TymMachine Time Code Generator/Translator (TCG/T). INSTALLATION PROCEDURE Upon receiving the TymMachine, make a thorough inspection of the instrument and all its accessories. Any damage or loss of equipment should be reported immediately to the responsible carrier.
  • Page 23 J21 RS-232 TALKER CONFIGURATION JUMPER J23 FOR DEVELOPMENT (FACTORY ONLY) J20 MULTI-ENCODER CONFIGURATION JUMPER R20 AND R21 MULTI- ENCODER AMPLITUDE AND RATIO ADJUSTMENTS RS-232 TALKER CONFIGURATION SWITCHES R9 LCD CONTRAST ADJUST FIGURE 2.2 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 24: Rear Panel Bnc J4 And J12 Configuration

    Figure 2.3. If slides are not used, a supporting bar or tray should be provided for the rear of the instrument. The chassis slides attach to the sides of the TymMachine. To mount it using the optional slide mounting kit, use the #6 self tapping screws provided with the kit. Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D)

  • Page 25: Tmra

    2.3.6 RELIABLE EARTHING – Reliable earthing of rack-mounted equipment should be maintained. Particular attention should be given to supply connections other than direct connections to the branch circuit (e.g., use power strips, chassis ground lug etc). TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 26: Connections

    INSTALLATION CONNECTIONS – See Rear View TM7000, Figure 2.4 Rear panel connectors J4, J5, J6, J7, J8, J10, J11 and J12 are BNC type connectors. Mating connectors are not provided with the TymMachine, as the type used depends upon the type of coaxial cable used.

  • Page 27: Option Card Installation Procedure

    Plate (furnished with the Option Card) and any remaining blank panels through the Rear Panel Option Plate to the metal chassis card guides. Attach any applicable I/O cables, and apply power to the unit. TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 28: Chapter Three Operation

    With the exception of the POWER switch (located on the rear panel Power Entry Module), all of the normal operating controls of the TM7000 are located on the front panel. Their purposes and functions are described in the following paragraphs.

  • Page 29: Next Switch

    This jumper configures the RS-232 Talker to output translated time, generated time, or in the automatic mode, to generate the time displayed on the front panel LED Display. AUTOMATIC GENERATOR TRANSLATOR Note: The factory default setting for this jumper is Automatic. TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 30: J20 Multi-Encoder Output Select

    The LED Display is normally used to display Time-of-Year. The time displayed is automatically selected from the Generator or the Translator according to the menu chosen. The LED Display is located on the left half of the TM7000 front panel. See Figure 3.1. Symmetricom, Inc.

  • Page 31: Operating Procedures

    CHAPTER THREE OPERATING PROCEDURES This section contains operating procedures for the TM7000. All units are capable of operation in the GENERATOR or TRANSLATOR mode. Those supplied with the Tape Search Option can also operate in the TAPE SEARCH mode. Selection of any optional mode not supplied results in the LCD Display changing to that shown in Figure 3.4.1.

  • Page 32: Initial Menu Selections

    OPERATION INITIAL MENU SELECTIONS The SELECT switches provide manual control of the TM7000. The function of these switches changes when the menu is changed. The menu may be changed by pressing the NEXT switch, the PREV switch, or one of the select switches.

  • Page 33: 3.6.2 Explanation Of Switch

    3.6.4 VERSATILE DISPLAY FUNCTION MENU This display, the Versatile Display Function Menu, allows the user to select the mode of operation in which the TM7000 is to operate. Versatile Display Function Menu Select VERSATILE DISPLAY function. GENERATOR TRANSLATOR TAPE SEARCH Figure 3.6.4.1...

  • Page 34: Generator Operation

    START. To stop the Generator the two stop switches must be activated in sequence, STOP (1) then STOP (2). When stopped, the sub-seconds time is set to zero or to the amount of propagation delay. Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D)

  • Page 35: Advance/Retard Operation

    This menu provides the controls for manually advancing or retarding the time generated by the TM7000. First select the desired rate, which will be indicated by a blinking digit, then press a switch under ADV or RET until the desired positioning has been achieved. If necessary, the rate can be changed and the procedure repeated.

  • Page 36: Sync Gen Operation

    The selected mode will appear in upper case letters. To set Disciplining ON or OFF press the switch directly below the desired function and the display will change the selected mode to upper case letters. Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D)

  • Page 37: Sync & Verify Operation

    SYNC & VERIFY OPERATION See SYNC Select Menu, 3.7.1.2. This selection initiates a synchronizing sequence. The TM7000 can synchronize to IRIG A, IRIG B, or any 1KHz carrier, one frame per second code which the unit translates. The code is applied to the Translator Code Input (J8) and must be selected on the Translator Code Select Menu.

  • Page 38: Generator Set-Up

    Versatile Display Function Menu Select VERSATILE DISPLAY function. GENERATOR TRANSLATOR TAPE SEARCH Figure 3.7.6.2 Selecting PREV will revert the LCD Display to that shown in Figure 3.7.6.3, the Select Generator Mode Menu. Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) 3-11...

  • Page 39: Generator Set-Up Inputs

    This menu is used to select a menu to input data to the Generator. The four choices permit presetting Time-of-Year (TIME), presetting Propagation Delay (PROP DELAY), inputting Control Functions (CNTRL FUNC), or preparing the TM7000 for an External Start Input (EXT START).

  • Page 40: Inputting Propagation Delay

    When Control Functions (CNTL FUNC) is selected from the Select Generator Inputs Menu, shown in Figure 3.7.8.1, the LCD Display will change to show the Control Function Bit Display (1) as shown in Figure 3.7.10.1. Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) 3-13...

  • Page 41: External Start Procedure And Set-Up

    Control Functions entered from these screens are inserted into the Serial Time Code Output of the basic TM7000. They are also output via the Control Function Outputs option if installed. A “0” represents the OFF condition of the Control Function Bit and a “1” represents the ON condition.

  • Page 42: Setting Generator Outputs

    This menu is used when the external start input is a pulse. The start source should be connected to rear panel BNC J6. Selection of the Edge of the start pulse to be used to start the TM7000 is accomplished by using a switch located below the desired edge to be used, either Pos or Neg.

  • Page 43: Selecting Id (Or Days)

    Following a change in selected code output or speed up (greater than 1:1 only) up to 100 seconds of code time may be required before the outputs are stable. Switching to a 1:1 (real time) speed will produce correct outputs immediately. 3-16 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 44: Selecting Generator Re/Gen (Multi-Code Encoder)

    This Multi-code Serial Encoder is an integral part of the basic TM7000. This encoder generates IRIG A, IRIG B, IRIG G, NASA 36, XR3, 2137 or AN/GSQ- 53 (250 Hz) as selected by the Output Code Menu as shown in Figure 3.7.16.1. Codes may be “re/generated”...

  • Page 45: 3.7.17 Rs-232 I/O Operation/Configuration

    TM7000. See Paragraph 3.2.5 B. This assembly is shipped with a jumper installed from J20 1-2 to force Generator time.

  • Page 46: Word Length

    EIGHT Word Length Word Output Format seven EIGHT ascii PACKED-BCD Figure 3.7.17.8 For a description of the RS-232 interface commands and word output format tables, see Section 3.10, RS-232 Interface Data Input/Output. Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) 3-19...

  • Page 47: Translator Operation

    CHAPTER THREE TRANSLATOR OPERATION The following paragraphs provide information on the Set-up and operation of the TM7000 in the Translator mode. The Translate functions, Code, Filters, Direction and Polarity are stored in Memory and will remain there until changed or upon initiating a TM7000 Reset.

  • Page 48: 3.8.1 Translator Code Input Selection

    Pressing the PREV switch while this menu is shown on the LCD Display will return it to the Set- Up Translator Menu, Figure 3.8.3. Select Desired IRIG Code Menu Select Desired IRIG Code Figure 3.8.2.1 Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) 3-21...

  • Page 49: Translator Nasa Code Input Selection

    When the new code selection is made, the LCD Display will change to that shown in Figure 3.8.5.1 with the selected code being translated shown in the upper right hand corner of the display. 3-22 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 50: 3.8.4 Translator Xr3/2137 Code Input Selection

    Pressing the switch below norm or inv after Pol selects the Polarity of the incoming code. The selected Polarity will be displayed in upper case letters. NORM selects Normal Polarity and INV selects Inverted Polarity. Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) 3-23...

  • Page 51: 3.8.6 Filters

    CHAPTER THREE If the code into the TM7000 has normal Polarity, “NORM” should be selected. If the input code is inverted, “INV” should be selected. When the direction of the input code is reversed, a Polarity inversion takes place automatically to provide optimal translating capability.
  • Page 52 SLOWER, or set faster by pressing any switch below FASTER. The PLAY SPEED RATIO and the SEARCH SPEED RATIO selected is displayed on the LCD Display between SLOWER and FASTER for each. Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) 3-25...

  • Page 53: External Frequency Input Operation

    An External Frequency (External Oscillator), any integer of 1 through 10 MHz (1, 2, 3 MHz, etc.) can be input to the TM7000 at rear panel BNC connector J5, and may be used to operate the TM7000 in lieu of the internal oscillator. This input must be TTL Square Wave or Sine Wave with a minimum amplitude of 1 volt Peak-to-Peak and a maximum of 5 volts Peak-to-Peak into a 50 Ohm load.

  • Page 54: Input/Output(I/O)

    10 milliseconds between consecutive characters sent from the computer to the TM7000 to allow sufficient time to process each character before the next one is received. One of two possible output formats can be selected, either ASCII or PACKED-BCD. The character length is always eight bits if PACKED-BCD output format is selected, while either seven bit or eight bit character length may be selected if the ASCII output format is used.

  • Page 55: Packed Bcd Format

    A command string to the TM7000 is a string of six ASCII characters, which always begins with two "slash" characters (//). The sixth character is often followed by a data character, as in the case of setting the time of the generator.

  • Page 56: To Request Output Of Time And Status Messages

    The computer outputs the first character of the command string. After the character is received, the TM7000 removes CTS until the character has been processed. When the TM7000 is ready for the next character, it will assert CTS. Steps “c” and “d” are repeated until a complete command has been transferred.

  • Page 57: Programming The Generator

    The command strings on the following pages are used to control the operation of the time code generator portion of the TM7000. The command interpreter is "case insensitive" for the ASCII letters. For purposes of clarity, the letter “L” is always shown in upper case to differentiate it from the digit “1,”...

  • Page 58: Select Multicode Output(S)

    //L009 //L109 Fast Playback //L00j //L10j Fast Playback //L00k //L10k 16:1 Fast Playback //L00L //L10L 32:1 Fast Playback //L00m //L10m 64:1 Fast Playback //L00n //L10n 128:1 Fast Playback //L00o //L10o 256:1 Fast Playback Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) 3-31...

  • Page 59: Translator Function Controls

    3.11.7 PROGRAMMING THE TAPE SEARCH CONTROL OPTION The TM7000 can be programmed to automatically search for any number of Tape Search Intervals up to a maximum of ten. In the following command sequences, the letter “X” represents an ASCII number character in the range of 0 to 9, which is the number of the Tape Search Interval of interest The subscripted letters each represent a single ASCII numeric character (e.g., D...

  • Page 60: Tape Search Time Values

    //j312 18 Seconds //j314 20 Seconds EARLY CLOSURE DELAY SELECTION //j500 0 Delay //j501 1 Second //j502 2 Seconds //j503 3 Seconds //j506 6 Seconds //j508 8 Seconds //j50j 10 Seconds //j510 16 Seconds Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) 3-33...

  • Page 61: Tape Speed Selection

    MANUAL SEARCH TAPE MOTION CONTROL //j700 Forward //j701 Fast Forward //j702 Reverse //j703 Fast Reverse //j704 Stop //j705 Record Note: To record, first send Record [//j705] command followed by appropriate direction [//j700 or //j702] command. 3-34 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 62: Transport Control Parameters

    Each status requests returns a single 8-bit character (byte). In order to use this feature, the TM7000 Series must be set up for 8-bit characters (not 7-bit characters), since the status byte requires 8 bits. The numeric status is in a packed-BCD format, which means that each four bits of a byte contain one BCD digit.

  • Page 63: Generator Time Values

    Note: X equals the channel (encoder) number. The basic (STCG) is number 1. Optional plug-ins can be any number from 1-7. TRANSLATOR TIME VALUES Command Status Response //ko86 0 //ko85 D //ko84 H //ko83 M //ko82 S //ko81 S //ko80 S .001 3-36 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 64: Translator Control Settings

    //L500 01 (Forward direction) //L500 20 (Reverse direction) //L500 21 (Auto direction) //kL02 0 Both filters on //KL02 4 Envelope filter on //kL02 8 Carrier filter on //kL02 < Both filters off Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) 3-37...

  • Page 65: Tape Transport Controls

    //Loj4 07 (Tape Speed=120 ips) //Loj4 08 (Tape Speed=240 ips) //Loj5 00 (ECD=0) //Loj5 01 (ECD=1 Second) //Loj5 02 (ECD=2 Seconds) //Loj5 03 (ECD=3 Seconds) //Loj5 06 (ECD=6 Seconds) //Loj5 08 (ECD=8 Seconds) 3-38 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 66: Tape Search Status

    Bit 4 0=Reverse command is asserted 1=Reverse command is not asserted Bit 5 0=Record command is asserted 1=Record command is not asserted Bit 6 0=Stop command is asserted 1=Stop command is not asserted Bit 7 Not Used Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) 3-39...

  • Page 67: Time Word Output Formats (Rs-232 I/O)

    When Translator Time is output, ERR indicates an error in the input code and LOS indicates a low time code input amplitude. When Generator Time is output, ERR and LOS have no meaning. The bits marked “X” have no meaning, and should be ignored. 3-40 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
  • Page 68 When Translator time is output, ERR indicates an error in the input code and LOS indicates a low time code input amplitude. When Generator Time is output, ERR and LOS have no meaning. The bits marked “X” have no meaning and should be ignored. Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) 3-41...

  • Page 69: Time Word Output (Talker)

    3.12.1 INTRODUCTION This output is designed in accordance with EIA RS-232C/RS-422 specification and is used to provide an electrical interface between any TM7000 timing instrument and the RS-232/RS-422 serial interface. This section provides the user with configuration information. 3.12.2 GENERAL DESCRIPTION This talker output can be divided into two sections: Time extraction and RS-232/RS-422 communication.

  • Page 70: Modes Of Operation

    One message per ten seconds. One message per one-hundred seconds. One message per 1000 seconds. Note: Although the Mode is selected by Switch S4, the actual message rate is selected by Switch S1 as follows: Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) 3-43...

  • Page 71: B. Asynchronous Mode

    NO HANDSHAKE (DEFAULT) ON (0) TEST OFF (1) OPERATE (DEFAULT) In the example above, the Mode is asynchronous, it is an 8 bit word, full handshake, and in the operate (default) mode. 3-44 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 72: Message Format

    UART needs to be reloaded. There are three ways to load the UART: Power down the TM7000 and power it up again. Disconnect the RS-232 cable and reconnect it. Move SW4-8 to the ON position and then back OFF.

  • Page 73: B. Baud Rate

    Always select the 8-bit word length when using the BCD output format. SW #1 SW #2 SW #3 SW #4 BAUD RATE ON (0) ON (0) ON (0) ON (0) 3-46 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 74: F. Preamble

    The postamble is automatically inserted into the ASCII format. It is optional in the BCD format. The postamble comprises hex 0D, hex 10 (ASCII CR, LF) at the end of the message. Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) 3-47...

  • Page 75: H. Quality Indicator

    Milliseconds, or start with Milliseconds and go through Days. SW. # SW. POSITION DESCRIPTION ON (0) BCD DAYS THRU MILLISECONDS OFF (1) BCD MILLISECONDS THRU DAYS (DEFAULT) ON (0) DISABLE LOSS AND ERROR OFF (1) ENABLE LOSS AND ERROR (DEFAULT) 3-48 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 76: Loss And Error Data

    This does not apply to the preamble or postamble. 3.12.7 OPERATION When power is applied to the TM7000, this talker will begin to operate. The time data that is output by this talker can be selected (by a jumper) per one of the following three modes: Automatic The time that is displayed on the front panel is the time that is output.
  • Page 77 S1 section 6 ON (0) Preamble selected on S1 section 7 ON (0) Quality Indicator selected S1 section 8 OFF (1) Postamble selected off S4 section 2 OFF (1) 8 Bit Word selected 3-50 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
  • Page 78 Word #1 Word #2 Word #3 Word #4 Word #5 Word #6 Word #7 Word #8 Word #9 Word #10 Word #11 Word #12 Word #13 30H Word #14 CR Word #15 LF Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) 3-51...
  • Page 79 8 Bit Word selected S4 section 5 ON (0) Format Days-mS selected S4 section 6 ON (0) Loss and Error bits disabled* * This does not apply to the Quality Indicator Word #9. 3-52 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
  • Page 80 OFF (1) Postamble selected off S4 section 2 OFF (1) 8 Bit Word selected S4 section 5 ON (0) Format Days-mS selected S4 section 6 ON (0) Loss and Error bits disabled Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) 3-53...
  • Page 81 S1 section 7 OFF (1) Quality Indicator selected off S1 section 8 OFF (1) Postamble selected off S4 section 2 OFF (1) 8 Bit Word selected S4 section 5 OFF (1) Format mS-Days selected 3-54 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
  • Page 82 OFF (1) Postamble selected off S4 section 2 OFF (1) 8 Bit Word selected S4 section 5 ON (0) Format Days-mS selected S4 section 6 OFF (1) Loss and Error bits disabled Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) 3-55...
  • Page 83 CHAPTER THREE This Page Intentionally Left Blank 3-56 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 84: Chapter Four Theory Of Operation

    THEORY OF OPERATION LOGIC DESCRIPTION AND USE The TM7000 TymMachine TCG/T is depicted by several drawings. One of these drawings is the Top Assembly drawing A-TM7000 which shows the physical location of the assemblies that are contained in this instrument. This print should be used to locate connectors on the rear panel and for quick reference to the physical location of any of the assemblies and controls.
  • Page 85 • Display – This section provides a visual interface between the Generator and the operator. FREQUENCY COUNTER SOURCE CONTROL 1PPS MINOR MAJOR DISPLAY TIME TIME PARALLEL TO SERIAL FORMATTER CONVERTER Figure 4.1.1 Typical Time Code Generator TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
  • Page 86 • Display – This section takes the Time Accumulator data and displays it to the user. SERIAL TO PARALLEL CONVERTER INPUT SYNC AMPLIFIER 1PPS TIME ACCUMULATOR FREQUENCY DIVIDERS SCAN TERMS DISPLAY MINOR TIME MAJOR TIME Figure 4.1.2 Typical Time Code Translator Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D)
  • Page 87 SYNC DISPLAY COUNTER CONTROL READ FREQUENCY TIME 1PPS DIVIDER ACCUMULATOR FREQUENCY DIVIDER SCAN TERMS FREQUENCY PARALLEL TO SERIAL GENERATOR CONVERTER FORMATTER OUTPUT AMPLIFIER MINOR TIME MAJOR TIME Figure 4.1.3 Typical Time Code Generator/Translator TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 88: Detailed Logic Description

    A functional block diagram of the TM7000 TymMachine may be found in Figure 4.2.1. The TymMachine is a Microprocessor based system. The Microprocessor used, a 65C02, has an eight bit data bus and a non-multiplexed 16 bit address bus.
  • Page 89 CHAPTER FOUR TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 90: 5] Stcg (I/O And Dac)

    Q2 is OFF, the gain determined by R24, R27 (ratio) and R26 is approximately 5 (depending upon adjustment of R27). Switching Q1 ON and OFF with the DC Shift form of IRIG B causes the output at U39 pin 1 to be a 3:1 Amplitude-Modulated signal. Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D)

  • Page 91: 2] Stcg

    (low), an output from U23 goes low asserting IRQ/. When interrupt request is processed, reading I/O0 puts the address of the interrupt source with highest priority on to the data bus provided by a priority encoder in U23. TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 92: 3] Stcg

    Generator is enabled to be interrupted. VCOM, PB0-PB3, are used as data outputs to the Backup Clock U1, the LCD Display, and the LED Displays. VCOM, PB4-PB6, are used, in conjunction with C1H, to write an address, write Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D)
  • Page 93 Multi – Code DC Code Output Ext. Time Base Input or 10MHz Sine Wave Output Pulse/1PPS Input AGC Output Code Input IRIG B AC Code Output IRIG B DC Code Output Multi – Code AC Code Output 4-10 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 94: Translator Agc)

    100 mV to 10 Volt dynamic range and a frequency response of 30Hz to 2MHz. The circuit does not require adjustment over this range. Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) 4-11...

  • Page 95: 8] Stcg (Translator Μp)

    The RAM is used for temporary storage of data and variables. The RAM is disabled for all addresses above 007F Hex by U23 as the addresses are used by the VIA’s and ROM. 4-12 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
  • Page 96 PB6 counts ZAD down, as appropriate, then increments Minor Time. FWD is sensed at PB4 to inform the Microprocessor of the code direction. SHIFT/ is a test output, which initializes many binary devices. Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) 4-13...

  • Page 97: 9] Translator Filts)

    5 volt logic (U53), baud rate generation, RS-232 formatting and decoding {U19), and an interface between the relatively fast processor bus, and the slower UART (U15). Setup for this option is provided by menus on the LCD. 4-14 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 98: 13] Multi-Encoder

    VCOM, PB0-PB3, is stored by LDUS/. Resistors R1-R7 limit current to match the intensity of DS9 to the rest of the display. This assembly also includes the keypad which is implemented with 16 switches in a four by four matrix, and the LCD. Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) 4-15...
  • Page 99 CHAPTER FOUR This Page Intentionally Left Blank 4-16 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 100: Chapter Five

    TOOLS AND TEST EQUIPMENT REQUIRED No tools or equipment are supplied with this unit. The following is a list of equipment needed for maintenance and adjustment of the TM7000 TymMachine TCG/T. Dual Trace Oscilloscope, Tektronix 2247A or equivalent. This Oscilloscope is a 100MHz bandwidth Oscilloscope with a Frequency Counter and Timer.

  • Page 101: Preventative Maintenance

    A high powered vacuum device cleaner should not be used on small components. When cleaning is completed replace the cover and reconnect the power. Check the operation of the unit. TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 102: Troubleshooting

    LED test sequentially displaying all zeros through nines. If the unit passes self-test (at power on) but doesn’t seem to be working properly, manually resetting the microprocessor is probably all that is necessary. Paragraph 5.3.5 explains the Manual Reset procedure. Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D)

  • Page 103: Generator (Part Of Stcg)

    Each time a command is sent to the Translator, it must respond or a special “HELP” “TRANSLATOR FAILED” message will be displayed. This does not interfere with the Generator time keeping, so it may be desirable to keep the unit operating until the Translator section can be repaired. TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 104: 5.3.4 System Troubles

    (Contrast) control R9. LCD Display characters illegible. Perform a Manual Reset. If characters are still bad replace LCD Display. Unit Powers-Up but does not operate. Microprocessor may need to be reset. Perform a Manual Reset. Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D)
  • Page 105 TP4 and TP3. Table 5-3 J32 Power Connector Pin Assignments J32 Pin Signal +12 Volts +5 Volts +5 Volts Ground Ground -12 Volts Figure 5.3.3 PIN 3 +5 VOLTS TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 106: 5.3.5 Manual System Reset

    Refer to the Option Description supplied with the card or furnished in the back of this User’s Guide. Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D)

  • Page 107: Adjustments And Test

    The Top Cover of the TymMachine must be removed to make the following adjustments and tests. This exposes a potential safety hazard in the Power Supply area which is located in the right rear corner of the unit as viewed from the front. TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 108: Oscillator Adjustment

    (the menu containing Stop, Start etc. as in Step c above) select SYNC/SYNC-GEN/DISABLE. Adjust the COARSE oscillator adjustment (with an insulated tuning tool) for the most stable display possible. It should not drift either left or right. Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D)

  • Page 109: Frequency Output Amplitude Adjustment

    If the LCD will be consistently viewed from a higher or lower angle than normal, R9 (Near connector J103) on the STCG, may be adjusted to improve contrast. Keep in mind that improving the contrast from one angle may make it worse from another. Seek an optimum compromise. 5-10 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 110: Los Threshold Adjustment

    5.5.5 LOS THRESHOLD ADJUSTMENT (Routine Adjustment) Perform a Master Reset on the TM7000 (see Step 5.1.1). Connect J3 Pin 11 (LOS) to an Oscilloscope, using J3 Pin 9 as the return. Observe this signal to be at a true (Hi) level with no Code Input to rear panel BNC connector J8.

  • Page 111: Pll (Carrier Filter) Adjustments

    Remove the ground from Pin 9 of IC U37 and temporarily connect Pin 9 of IC U37 to +5 Volts and adjust Potentiometer R96, labeled “RANGE1” for a frequency of 1080Hz +5Hz as read on the Universal Counter. 5-12 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 112: 5.5.7 Pll (Carrier Filter) Tests

    “IN” under Envelope and Carrier and “coast” should not to be in capital letters indicating coast is OFF. Connect a 1:1 IRIG B source to rear panel connector J8 of the TM7000. Momentarily (less than 1 second) remove and reconnect the IRIB B input from J2 and observe the unit continues to update.
  • Page 113 CHAPTER FIVE Set “coast” to ON by pressing any switch under “coast” observing that it becomes capital letters. Remove the IRIG B input from J8 and observe that the TM7000 continues to update. It should continue to update indefinitely. FIRMWARE UPGRADING This section provides installation instructions for upgrading the firmware of the TymMachine.

  • Page 114: Appendix Aoption Descriptions

    This assembly may be plugged into any available double-wide option position. Remove power from the TM7000. If necessary, remove a card guide to create a double-wide position by removing the screw which holds it from inside the unit. Plug this assembly into any available option slot in the rear of the chassis, being careful that components are on the upper side.
  • Page 115 See Figure 2, Tape Control Relays, for Tape Search Control Relay connections when using the 20138 assembly. See Figures 2, Tape Control Relays and Figure 3, Tape Speed Relay connections when using the 20138-1 assembly. Note: J1 is a 37 Pin D Male type connector. TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
  • Page 116 Note: The Translator must be setup for the code to be translated and filters to be used with this option. See the TymMachine 7000 User’s Guide for Translator Set-Up. The following section describes the use of the TAPE SEARCH menus. Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D)
  • Page 117 REMOTE Figure 6 Selecting SET-UP from this menu by pressing a switch under SET-UP will cause the TM7000 LCD Display screen to change to the SET-UP Menu shown in Figure 7. Pressing a switch under AUTO-S will change the LCD Display to the Interval Screen shown in Figure 13.
  • Page 118 Stop Time (SP) which can be entered in the same fashion. Digits can be skipped over without modification by use of the cursor right (>) or left (<) switches. Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D)
  • Page 119 Stop command and the following command. TTD only functions in the Auto- Search (AUTO-S) modes. The selected TTD is indicated by the cursor. The Tape Transport Delay may be changed, by pressing the switch below the desired delay. TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
  • Page 120 DIR-FIRST-last. In each of these cases, the operator selection is capitalized. Direction and motion commands overlap in time. NEXT or PREV exits this menu to the Tape Search Set-Up Menu, Figure 7. Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D)
  • Page 121 The current tape position is automatically considered in determining whether to go forward or reverse when searching, so if the tape has been changed, it is advisable to START (play) for a few seconds to tell the TM7000 where the tape is located. 1.7.1 STS (SEARCH TO START) This function causes the transport to travel at search speed to a position preceding the Start Time by the amount of ECD.
  • Page 122 Pressing a switch under MAN-S while the Tape Search Set-Up Menu, Figure 7, is displayed on the LCD causes the Manual Search Operating Menu, Figure 15, to be displayed. Manual Search Operating Menu ? ST???:??:??:??.??? SP???:??:??:??.??? FWD FFWD REV FREV INC-INT REC STOP Figure 15 Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D)
  • Page 123 REC followed by a direction command (FWD or REV) will initiate recording in the selected direction. STOP is used to stop motion. A stop command is issued when this menu is exited. A-10 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
  • Page 124 INSTALLATION This assembly may be plugged into any available option position. Remove power from the TM7000. Plug this assembly into the TM, being careful that components are on the top side. Interconnect to the desired destination equipment. Apply power. OPERATION Operation of this option requires the user to select the speed-up ratio of the input code using the translator envelope filter select (when using tape search, select both search and play speeds).
  • Page 125 Output connector is 62 pin micro-miniature “D” type. See Table Two for signal connections. Table Three Sample Time Rate Selection Desired Rate Required Jumper 1 pps E7-E8 10 pps E9-E10 100 pps E11-E12 1K pps E13-E14 10K pps E15-E16 100K pps E17-E18 A-12 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
  • Page 126 OPTION DESCRIPTIONS Table Two Signal Signal SPARE tmS8 tmS4 tmS2 tmS1 hmS8 hmS4 hmS2 hmS1 SAMPLE ENOUT Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) A-13...

  • Page 127: Tm Opt

    This plug-in module is designed in accordance with EIA RS-232C specification and is used to provide an electrical interface between the TymMachine 7000 (TM7000) and the RS-232 serial interface. This document provides the user with information to configure this plug-in module.
  • Page 128 Note: When a switch is set to the “ON” position, the voltage for that line is 0 volts or low. In other words, ON = Binary Zero; OFF = Binary One. Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) A-15...
  • Page 129 UART needs to be reloaded. There are three ways to load the UART: 1) Power down the TM7000 and power it up again. 2) Disconnect the RS-232 cable and reconnect it. 3) Move SW4-8 to the ON position and then back OFF.
  • Page 130 An ASCII “space” (hex 20) is set in both Quality 1 and 2 if there are no errors. INSTALLATION PROCEDURE • Disconnect the power cable from the back of the TM7000. • Select an open option slot and remove the two assembly securing clips from the slot rails.
  • Page 131 APPENDIX A • Reattach the securing clips to the slot rails. • Reconnect the cable to the J1 connector on the back of the TM7000. • Apply power. OPERATION When power is applied to the TM7000, this module will begin to operate.
  • Page 132 (1, B and C through 6, B and C.) Full Handshake DCE with No Handshake (1, A and B. 2, A and B. 3 and 4 C. 5 and 6 C.) No Handshake (Factory Default) Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) A-19...
  • Page 133 Automatic Generator Translator (Factory Default) 1.11 MODE OF OPERATION Asynchronous (SW4-1 ON) Synchronous (SW4-1 OFF) Asynchronous Mode - Character Selection SW3-1 through SW3-8 (1-MSB, 8-LSB) (ON=0, OFF=1) Mandatory Switch Setting SW4-3 ON A-20 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
  • Page 134 9600 (SW2-1 OFF, SW2-2 OFF, SW2-3 ON, SW2-4 ON) 19200 (SW2-1 OFF, SW2-2 OFF, SW2-3 ON, SW2-4 OFF) 38400 (SW2-1 OFF, SW2-2 OFF, SW2-3 OFF, SW2-4 ON) 38400 (SW2-1 OFF, SW2-2 OFF, SW2-3 OFF, SW2-4 OFF) Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) A-21...
  • Page 135 (SW2-7 ON, SW2-8 OFF) Even (SW2-7 OFF, SW2-8 ON) None (SW2-7 OFF, SW2-8 OFF) 1.11.8 PREAMBLE Preamble (SW1-6 ON) None (SW1-6 OFF) 1.11.9 QUALITY INDICATOR Quality On (SW1-7 ON) None (SW1-7 OFF) A-22 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
  • Page 136 Word #7 Word #8 Word #9 Word #10 Word #11 Word #12 Word #13 Word #14 Quality 1 Optional Loss Word #15 Quality 2 Optional Error Word #16 CR Word #17 LF Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) A-23...
  • Page 137 Word #1 Word #2 Word #3 Word #4 Word #5 Word #6 Word #7 Word #8 Word #9 Word #10 Word #11 Word #12 Word #13 30H Word #14 CR Word #15 LF A-24 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
  • Page 138 Word #8 Word #9 Quality Optional Word #10 Postamble Optional Table Two-A BCD Format Time Word Output No Options Word #1 Word #2 Word #3 Word #4 Word #5 Word #6 Word #7 Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) A-25...
  • Page 139 Not Used MATCH Not Used +5VB Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used A-26 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
  • Page 140 Not Used MATCH Not Used +5VB Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) A-27...

  • Page 141: Serial Encoder

    INSTALLATION This assembly may be plugged into any available option position. Remove power from the TM7000. Plug this assembly into the PTS, being careful that components are on the top side. Interconnect the modulated output (J1) and DC LEVEL SHIFT output (J2) as desired. Apply power.
  • Page 142 Levels: While observing the modulated output (J1) on an oscilloscope, adjust R16 for the desired level. The standard amplitude for most applications is 3 V p-p (modulated carrier), which is approximately 1 V RMS. Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) A-29...

  • Page 143: Tm Opt

    This assembly may be plugged into any available option position. Remove power from the TM7000. Plug this assembly into the PTS, being careful that components are on the top side. Interconnect modulated output (J1) and DC Level Shift (J2) as desired. Select the desired channel number in the range of 1 through C hex (1-12) using the ‘piano’...
  • Page 144 This is normally 3:1 (mark:space amplitude) for an IRIG time code. Level: While observing the modulated output (J2) on an oscilloscope, adjust R15 for the desired amplitude. The normal factory setting is 3 V P-P (mark amplitude). Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) A-31...
  • Page 145 1. “N” is the current Encoder channel. Advance with the NEXT button. 2. Select the desired output code with a button directly under the menu item. 3. Only installed channels are displayed. SPEED UP Select Desired Generator Speed up A-32 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
  • Page 146 OPTION DESCRIPTIONS Figure 1 Channel Selector Output Level Ratio DC Code AC Code Adjust Adjust Output Output Shown with Channel C (12) Selected Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) A-33...

  • Page 147: Read Dc Code

    INSTALLATION This assembly may be plugged into any available option position but should preferably be located near J8. • Remove power from the TM7000. • Plug this assembly into any unused option slot, being careful that components are facing upward.

  • Page 148: Slow Code

    Pressing the NEXT switch will cause the LCD Display to change to the Select Desired Code Family Menu as shown in Figure 4. Select Desired Code Family Menu Select Desired Code Family IRIG NASA XR3/2137 OTHER Figure 4 Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) A-35...
  • Page 149 Figure 11) will appear. If either one of these special codes are provided, its option description will be inserted at the end of this Appendix. Select Desired NASA Code Menu Select Desired NASA Code 28.1 Figure 6 A-36 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
  • Page 150 LCD Display will change to that shown in Figure 8 with the selected code being translated shown in the upper right hand corner of the display. Translating Menu FILTER DIRECTION Translating (SEL CODE) IN---out rev-AUTO-fwd Pol-NORM-inv Figure 8 Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) A-37...
  • Page 151 Polarity will be displayed in upper case letters. NORM selects Normal Polarity and INV selects Inverted Polarity. If the code into the TM7000 has normal Polarity, “NORM” should be selected. If the input code is inverted, “INV” should be selected. When the direction of the input code is reversed, a Polarity inversion takes place automatically to provide optimal translating capability.
  • Page 152 DC code will operate in reverse only when using the Tape Search Option. DC Code requires several seconds to acquire lock and start translating. Selection Not Installed Display Figure 11 Selected option is not installed. Call your Symmetricom representative Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) A-39...
  • Page 153 APPENDIX A For DC Code operation, the envelope filter should be selected “IN”, and the carrier filter should be selected “OUT”. A-40 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
  • Page 154 INSTALLATION This assembly may be plugged into any available option position. Remove power from the TM7000. Plug this assembly into the PTS, being careful that components are on the top side. Interconnect to the desired destination equipment. Apply power. OPERATION Operation of this option is normally transparent to the user.
  • Page 155 Modulation Ratio Nominally 5:2. ADJUSTMENTS Level While observing the modulated output (J1) on an oscilloscope, adjust R4 for the desired level. Figure 1 Slow Code Output/Level Adjustment Slow Code Output Level Adjustment A-42 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
  • Page 156 OPTION DESCRIPTIONS Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) A-43...

  • Page 157: Tm Opt

    Insert the assembly into the TM7000, insuring that the components are oriented toward the top of the TM7000. Connect the video input signal to J3 and the video output signal via J2. Reapply power. The Video Time Inserter assembly is now operable.
  • Page 158 OPTION DESCRIPTIONS OPERATION The Video Time Inserter is specified for operation when the TM7000 is operating in the generator mode or when translating any of the available time code formats at real time (1:1) in the forward direction. The resolution is equal to the carrier frequency of the time code being translated or 1mS, whichever is less.
  • Page 159 It is suggested that all equipment be interconnected and tested as a system prior to beginning a critical mission. 1.3.4 CHARACTER LEVEL POTENTIOMETER R38 Used to adjust the shading of the inserted characters in the video output. Clockwise operation increases character “whiteness.” A-46 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
  • Page 160 When inserting translator time, sub-seconds data availability is a function of the carrier frequency of the time code being translated by the TM7000. For example, when translating IRIG E100 or NASA 28, the unit milliseconds digit (if enabled) will be held to “0.” Refer to Table One below for sub- seconds data selection.
  • Page 161 Refer to Figure One for “E” point location. 1.3.12 DATA SOURCE SELECTION As shipped from the factory, the inserted time value follows the TM7000 operating mode. To insert generator time only, solder a short, insulated bus wire jumper (not supplied) between E1 and E2.
  • Page 162 OUTPUT LEVEL Nominally the same as the input, into a load of 75Ω, ±10%, to ground. J2 and J3 Y/C Pin Assignments Pin Number Assignment Luminance Return Chrominance Return Luminance Input Chrominance Input Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) A-49...
  • Page 163 APPENDIX A Figure One A-50 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 164: Distribution Module, 600Ω Driver

    This assembly may be plugged into any available position. Remove power from the TM7000. Plug this assembly into the TM7000 being careful to locate the components on the top side. Be sure inputs J1, J5, and J9 (if applicable) are connected before plugging the assembly in.
  • Page 165 J6, J7, J8, J10, J11, J12. J1, J5, or J9 E1 to E2, and E3 to E4. All Outputs. Figure One Input 3 Output 3 Input 2 Output 2 Input 1 Output 1 A-52 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.

  • Page 166: Distribution Module, 50Ω Driver

    This assembly requires 2 vertical slots. The assembly may be installed in any available lower slot. Remove power from the TM7000. Plug this assembly into the TM7000 being careful to locate the components on the top side. Be sure input(s) J1, J5, and J9 (if applicable), are connected before plugging assembly in..
  • Page 167 J6, J7, J8, J10, J11, J12 J1, J5, or J9 E1 to E2, and E3 to E4 All Outputs Input/Output Diagram Input 3 Output 3 Input 2 Output 2 Input 1 Output 1 A-54 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
  • Page 168 Input Output Sealectro Corporation 051-428-3188-000 051-424-3188-0000 Quantity Required Quantity Required RECOMMENDED CABLES Cable Usage Table RG-174/U, RG-188/U, RG-316/U 50Ω RG-161/U 70Ω RG-179/U, RG-187/U 75Ω RECOMMENDED CRIMPING TOOL Sealectro Corporation 50-000-0090 or 50-000-0091 Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) A-55...

  • Page 169: Buffer/Pulse Rate Module

    80% - 20% etc., or as pulse outputs with a pulse width of ten microseconds (rising edge on-time). To jumper as standard counter terms, install a jumper plug between JP3-2 and JP4-2 as shown in Figure Two. A-56 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
  • Page 170 500kpps 100kpps 50kpps *20kpps 5kpps 2kpps 500pps 200pps 100pps 50pps 20pps 10pps 5pps 1pps 1ppm * 10kpps is generated in lieu of 20kpps if 21057-1 Assembly is used. X = Closed (on). Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) A-57...
  • Page 171 • With TTL level pulse rate inputs (or pulse rates selected to be generated), this assembly will output RS-422 differential outputs. • This assembly is not intended to be used with sinusoidal inputs. A-58 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
  • Page 172 Table Two Jumper Configuration JP1/JP2 JP3/JP4 Buffer Assembly JP1-2 to JP2-2 Not Used Pulse Rate Assembly JP1-1 to JP2-1 JP3-1 to JP4-1 Pulse Rate Assembly (10us Out) JP1-1 to JP2-1 JP3-2 to JP4-2 Symmetricom, Inc. TM7000 TymMachine TCG/T (Rev D) A-59...
  • Page 173 APPENDIX A A-60 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
  • Page 174 SYMMETRICOM TIMING & TEST For more information about the complete range of Quality MEASUREMENT Timing Products from the Symmetricom group of companies 3750 Westwind Blvd. call 1-800-544-0233 in the US and Canada. Santa Rosa, California 95403 USA Tel: 707-528-1230 Or visit our site on the world wide web at Fax: 707-527-6640 http://www.Symmetricom.com...

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