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Datum bc632D User Manual

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bc632D
Wall Mount LED Display
8500-0015
User's Guide
Rev. A
(June, 2000)

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  • Page 1 Wall Mount LED Display 8500-0015 User’s Guide Rev. A (June, 2000)
  • Page 2 Wall Mount LED Display User’s Guide March, 1997...

  • Page 3: Table Of Contents

    2.1.6 Jumper JP4 - Select Event or 1PPS for BNC J2............2-4 2.1.7 Jumper JP5 - Time Bus Termination................. 2-5 2.1.8 Jumper JP6 - Control Bus Select................2-6 2.1.9 Jumper JP7 - BNC J4 Function Select ..............2-7 Datum Inc bc632D Wall Mount LED Display (Rev A)
  • Page 4 3.3.12 Event (Shift-E) - Change Event Capture Parameters ..........3-13 3.3.13 Addr (Shift-F) - Change Local Address ............... 3-14 3.3.14 Program Retention ....................3-14 3.4 Programming Summary......................3-14 3.5 Initial Parameters........................3-17 bc632D Wall Mount LED Display (Rev A) Datum Inc...
  • Page 5 A.7.1 Bit Rate, Parity and Framing Bits ................A-4 A.7.2 Message Formats....................A-5 A.7.3 Digital Time - Character Mode ................A-5 A.7.4 Digital Time - Pulse Mode ..................A-6 A.7.5 Multiplex Time ....................... A-7 A.8 Time Tags ..........................A-8 Datum Inc bc632D Wall Mount LED Display (Rev A)
  • Page 6 B.5.2.7 Format .....................B-7 B.5.2.8 Color .......................B-8 B.5.2.9 Duration....................B-8 B.5.2.10 Link .......................B-9 B.5.2.11 Halt ......................B-9 B.5.2.12 Step .......................B-9 B.5.2.13 Set ......................B-9 B.5.2.14 Start.....................B-10 B.5.2.15 Stop.....................B-11 B.5.2.16 Echo ....................B-11 B.5.2.17 End ......................B-12 B.6 Examples ..........................B-12 bc632D Wall Mount LED Display (Rev A) Datum Inc...

  • Page 7: Addendum Aoffset Programming

    SELECT key to set local offset time. The display prompts the offset time of the first source display "OFFSET 1 +/- XX" hour(s). The local offset time can be set to +/- 19 hours. The bc632D module has the capability to display eight (8) different local offset times from a single time source. When the SELECT key is pressed again, the display scrolls to the next source display offset time menu.

  • Page 8: Set Leap Year

    The standard IRIG time code does not carry leap year information. When local offset time is set for the display, the leap year flag is required for the bc632D display time rollovers from 365 days or 366 days to 1 day.

  • Page 9: Programming Leap Year Via Rs422

    ADDENDUM A A.3.2 PROGRAMMING LEAP YEAR via RS422 addr aaa display address leapyear 1 set LEAP YEAR flag Datum Inc bc632D Wall Mount LED Display (Rev A)
  • Page 10 ADDENDUM A This Page Intentionally Left Blank. bc632 Wall Mount LED Display (Rev A) Datum Inc...

  • Page 11: Chapter One Introduction

    • Decodes modulated or un-modulated (DC level shift) time codes. • Master/Slave operation allows digital synchronization of multiple bc632D's. • Up to six separate time channels multiplexed on one cable to multiple bc632D's. • Continues to provide time, “flywheels,” during loss of the external time code source.

  • Page 12: Overview

    The bc632D is programmed using a hand-held infrared remote control keyboard. The keyboard is used in selecting the display format and time source that the bc632D decodes. It sets and reads the real time clock, activates event time capture operations, and reads the captured time and status.

  • Page 13: Time Code Formats

    Hundreds of time code formats were developed - one for each agency involved. During the early 1960's the InterRange Instrumentation Group promoted a series of “standard” time code formats now loosely referred to as “IRIG Time Codes.” The bc632D decodes four of these formats: IRIG A, IRIG B, 2137, and NASA 36.
  • Page 14 CHAPTER ONE Figure 1-1 IRIG Time Code Frame bc632D Wall Mount LED Display (Rev A) Datum Inc...

  • Page 15: Chapter Two Installation And Setup

    Modulated Time Code Input. If you only have one bc632D, and you are using it with the internal clock or modulated time code, and you have no need to use the event capture input, then you do not need to change any of the jumpers.

  • Page 16: Jumper Location

    When you use the Control Bus, you must terminate the ends of the network with a 100Ω resistor. The resistor may be external or internal to the bc632D. To use the internal terminating resistor, place the jumper on JP1 between pins 3 and 4. Otherwise place the jumper between pins 1 and 2.

  • Page 17: Jumper Jp2 - Rs-232/Rs-485 Select For J3 Pin A6

    A6 to an RS-232 driver. If you are using the display as part of a daisy-chained network, put the jumper on pins 2 and 3, which routes pin A6 to the (+) terminal of an RS-485 transceiver. Figure 2-3 Jumper JP2 Settings RS-232 (Factory Setting) RS-485 Datum Inc bc632D Wall Mount LED Display (Rev A)

  • Page 18: Jumper Jp3 - Rs-232/Rs-485 Select For J3 Pin A1

    1 and 2, so that BNC J2 is used as a 1PPS output. To use BNC J2 as an event input, move the jumper to pins 3 and 4. Figure 2-5 Jumper JP4 Settings 1PPS Output (Factory Setting) Event Input bc632D Wall Mount LED Display (Rev A) Datum Inc...

  • Page 19: Jumper Jp5 - Time Bus Termination

    When you use the Digital Time or Multiplex Time protocols, you must terminate the ends of the network with a 100Ω resistor. The resistor may be external or internal to the bc632D. To use the internal terminating resistor, place the jumper on JP2 between pins 3 and 4. Otherwise place the jumper between pins 1 and 2.

  • Page 20: Jumper Jp7 - Bnc J4 Function Select

    Note that the Event Input is available on either BNC J2 or J4. The Event Input would only be selected on J4 if the 1PPS output is required and the bc632D is using its internal clock or the RS-485 port as the source of time.

  • Page 21: Mounting Instructions

    • Wall flush mount. • Ceiling hanging. • Countertop. • Wall mounting brackets. For installation purposes, please note that the bc632D display weighs 4 lbs. Select the mounting instructions appropriate for your needs. 2.2.1 WALL FLUSH MOUNT Step 1 Locate the keyhole slots on the back of the case at either end. Note, two sets of keyhole slots are available.

  • Page 22: Wall Mounting Using Brackets

    2.3 SERIAL TIME BUS Each bc632D has two RJ11 jacks on the back. These can be used to connect several displays in a network. The jacks carry two busses. One bus distributes timing information. The other can be used to distribute control and programming information.

  • Page 23: Digital Time Protocol

    • Terminate the RS-485 line with the bc632D's termination resistors by moving the existing jumper on JP5 pins 1 and 2 to JP5 pins 3 and 4. (See Section 2.1.7). The two bc632D's on the end of the network should be terminated.
  • Page 24 Denotes Termination by on-board 100Ω resistors. 4- or 6-conductor cable with RJ11 male connectors. bc632D RJ11 port (female mating connector). Figure 2-10 bc632D Master/Slave Serial Distribution Bus with multiple Drop Points Master bc632D* Termination Choice of one of the two methods listed below: Denotes direct 100W termination on RS-485 line.

  • Page 25: Multiplexed Time Protocol

    It uses the same physical wiring configuration with the exception that a bc632D can not act as a master in the Multiplexed time operation. The master will typically be a computer with several time inputs and a serial port.
  • Page 26 CHAPTER TWO Page Intentionally Left Blank 2-12 bc632D Wall Mount LED Display (Rev A) Datum Inc...

  • Page 27: Chapter Three Operation And Programming

    • Display Address for network operation. 3.1 OPERATION When power is applied, the bc632D begins displaying time using the parameters in memory. This is it’s normal “Run” mode. When running, one of several display formats will be displayed. The bc632D allows you to select from several display formats to suit your application.

  • Page 28: Status Lights

    For example, when setting the internal clock, the keys 0-9 are used to enter the time rather than select items in the list. These exceptions are noted on the following page. bc632D Wall Mount LED Display (Rev A) Datum Inc...

  • Page 29: Infrared Keyboard

    The infrared (IR) keyboard is a wireless programming tool used to provide a convenient way to program the bc632D display. The keyboard transmits a beam of infrared light with a special code for each key pressed. The front panel of the keyboard includes an indicator that flashes when the keyboard is operating.
  • Page 30 CHAPTER THREE Figure 3-1 Infrared Remote Keyboard bc632D Wall Mount LED Display (Rev A) Datum Inc...
  • Page 31 (SHIFT-D) Set the time of the internal Real Time Clock, or set up the RTC to synchronize to other time sources. EVENT (SHIFT-E) Show the event time and set up the event capture function. Datum Inc bc632D Wall Mount LED Display (Rev A)

  • Page 32: Sound Control

    The wall display can be turned on and off without unplugging it. The ON/OFF option does not clear the programming information stored in memory. Additionally, the internal time clock is continually updated bc632D Wall Mount LED Display (Rev A) Datum Inc...

  • Page 33: Keyboard Batteries

    The following sections describe the programming operations of the display. 3.3.1 MEMORY STRUCTURE The bc632D has eight memory locations which can each store a time source, label, format, color, duration, and link flag. Each memory location is called a "step" since they can be linked together to form a sequence of steps.

  • Page 34: Editing

    If the time source is present, the display may take several seconds to acquire it. For this reason, it is not recommended that you change time sources within a sequence, unless you can tolerate lapses in the time display while the bc632D acquires the time source. 3.3.3 EDITING When entering a label or setting the clock time, one character will flash.

  • Page 35: Label - Edit Text Labels

    Time Code is IRIG B, IRIG A, 2137 and NASA 36, all auto-selected. The bc632D will maintain synchronization to the time code to within 1 millisecond. If the time code is interrupted, the display will continue with its last known time and rate.

  • Page 36: Format - Change Display Format

    (Alphanumeric label with no time data.) In format 1, the first character displays the time source or time code format that is being decoded. The following are possible: 1 = Multiplexed time channel 1. 3-10 bc632D Wall Mount LED Display (Rev A) Datum Inc...

  • Page 37: Color - Change Display Color

    D = Digital time protocol. N = NASA 36 time code format. (blank) = Internal real time clock. When Datum CD0 mode is selected, the following display format is used: CD SH HH:MM:SS CD = pseudo IRIG B Countdown code format.

  • Page 38: Duration - Change Run Time Of A Step

    3.3.10 MASTER (SHIFT-C) - ENABLE DIGITAL TIME MASTER TRANSMISSIONS The MASTER key can be used to enable or disable the digital time transmissions of the bc632D. If several displays are wired together on the same network, one can act as a time master for the network.

  • Page 39: Event (Shift-E) - Change Event Capture Parameters

    SELECT to select another item, or you may press PROGRAM to abort. 3.3.12 EVENT (SHIFT-E) - CHANGE EVENT CAPTURE PARAMETERS The bc632D can display the time at which an external event occurred. The event time is displayed to milliseconds. E: HH:MM:SS.mmm Captured Time.

  • Page 40: Addr (Shift-F) - Change Local Address

    When power is restored to the unit, the previously programmed parameters will be used automatically. 3.4 PROGRAMMING SUMMARY PROGRAM: Select time source 1. Serial Channel 1. 2. Serial Channel 2. 3. Serial Channel 3. 3-14 bc632D Wall Mount LED Display (Rev A) Datum Inc...
  • Page 41 (C = Source Code, Clock would be blank.) 7. LABEL HH:MM:SS (Uses the first 5 label characters.) 8. DW MON/D/YR (DW = Day of week (MON-SUN), MON/D/YR is month, day, year.) Datum Inc bc632D Wall Mount LED Display (Rev A) 3-15...
  • Page 42 Clear the current event time to allow for a new event. Rising Edge? Set event to be captured when input goes high. Falling Edge? Set event to be captured when input goes low. No Edge? Turn off event capture input. 3-16 bc632D Wall Mount LED Display (Rev A) Datum Inc...

  • Page 43: Initial Parameters

    OPERATION AND PROGRAMMING ADDR (SHIFT-F) Edit local address. SHIFT-number Select step (1-8). 3.5 INITIAL PARAMETERS The bc632D initial factory parameters are shown below: Source of time Internal real time clock. Labels All labels are blank. Formats Format 1 (C DDD:HH:MM:SS).
  • Page 44 CHAPTER THREE This Page Intentionally Left Blank. 3-18 bc632D Wall Mount LED Display (Rev A) Datum Inc...

  • Page 45: Chapter Four I/O Connectors

    J3 are listed in Tables 4-1 and 4-2. Figure 4-2 shows the orientation of the J3 pins. These connectors are used for linking bc632D's in a network configuration using Datum's Digital Time protocol. Standard telephone wire can be used to connect Slave bc632D's to a Master. The bc632D can also be used as a Digital Time master.
  • Page 46 CHAPTER FOUR The output port can also be used for diagnostic purposes. The bc632D broadcasts time, measured code period, code detection status, code search status, software version and date code, AGC slice level, and control byte information. Data is sent at 9600 baud, 8 data bits, one stop bit, no parity. Each line is terminated by a cariage return (0DH) and a line feed (0AH).

  • Page 47: Serial Output Messages

    = XXXX Time yy ddd hh:mm:ss.:::::: {See Note 7.} Searching for time code: checking (time code type){Modulated time code: irigb, iriga, nasa36, 2137} lev = cannot find (time code type) Datum Inc bc632D Wall Mount LED Display (Rev A)

  • Page 48: J4 Timecode Input Bnc Connector

    • No data is transmitted out the serial port when the bc632D is set up as a Slave. • RS-485 data is only received by the bc632D when the display is configured as a Slave. The normal message data broadcast from the Master is decoded by the Slave for time synchronization.

  • Page 49: Chapter Five Adjustments

    RV1. The following steps assume that the power is applied and the bc632D rear cover has been removed to allow access by an oscilloscope probe. A source of IRIG B timecode is required.
  • Page 50 CHAPTER FIVE This Page Intentionally Left Blank. bc632D Wall Mount LED Display (Rev A) Datum Inc...

  • Page 51: Chapter Six Drawing Set

    CHAPTER SIX DRAWING SET 6.0 GENERAL This chapter contains the schematic diagram, assembly drawing, and parts list for the bc632D, following page 6-2. Datum Inc bc632D Wall Mount LED Display (Rev A)
  • Page 52 CHAPTER SIX This Page Intentionally Left Blank. bc632D Wall Mount LED Display (Rev A) Datum Inc...
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  • Page 61: Digital Time Transmission Protocol

    DIGITAL TIME TRANSMISSION PROTOCOL A.0 INTRODUCTION This document defines the Digital Time Transmission Protocol as used by Datum timing products. The protocol allows devices to be synchronized to a common source of time. In addition, it allows several devices (typically displays) to synchronize to multiple time references using a common cable.

  • Page 62: Cable

    This arrangement allows the signal to be daisy-chained. Drivers should be selected that do not load the line excessively when power to the device is off. This allows a device to be turned off without shutting down the whole network or breaking the daisy-chain. bc632D Wall Mount LED Display (Rev A) Datum Inc...

  • Page 63: Bussing

    4,000 feet. The main bus should be a shielded twisted pair to increase noise immunity. Stubs off the main bus should be kept as short as possible. Datum Inc bc632D Wall Mount LED Display (Rev A)

  • Page 64: Termination

    A.7.1 BIT RATE, PARITY AND FRAMING BITS. The timing signals are sent as asynchronous serial messages. Characters are sent at 9600 BPS, with one start bit, one stop bit, and no parity bit. bc632D Wall Mount LED Display (Rev A) Datum Inc...

  • Page 65: Message Formats

    ASCII numeric characters representing hours, followed by a colon. This can range from "00:" to "23:." "MM:" is two ASCII numeric characters representing minutes, followed by a colon. This can range from "00:" to "59:." Datum Inc bc632D Wall Mount LED Display (Rev A)

  • Page 66: Digital Time - Pulse Mode

    The unit of time is a half-microsecond (See "Time Tags" below). It is followed by a carriage return $0D) and a line feed ($0A). bc632D Wall Mount LED Display (Rev A) Datum Inc...

  • Page 67: Multiplex Time

    ($0D) and a line feed ($0A). The other fields are the same as above. The message must be transmitted within the one second period following the on-time mark. Datum Inc bc632D Wall Mount LED Display (Rev A)

  • Page 68: Time Tags

    For example, a value of "0007D0" indicates that the stop bit of the most recent reference character was sent at 1000 microseconds after the on-time mark (7D0 hex = 2000 decimal, 2000 * 0.5 microseconds = 1000 microseconds). bc632D Wall Mount LED Display (Rev A) Datum Inc...

  • Page 69: Introduction

    B.1 RS-485 SIGNALS The signals carried between bc632D's are RS-485 compatible. The two RJ11 jacks on each display are wired together so that standard telephone cable can be used between devices. Standard telephone cables are wired as shown in Figure B-2.

  • Page 70: Daisy Chaining

    Stubs off the main bus should be kept as short as possible. If one display is connected to a computer using RS-232 signals, then it must be connected to the bus from bc632D Wall Mount LED Display (Rev A) Datum Inc...

  • Page 71: Termination

    Each end of a network should be terminated with a 100Ω ¼ Watt resistor between pin 2 and 5. This resistor may be inside the unit at the end of the cable or an external unit. B.5 LOGICAL DESCRIPTION B.5.1 BIT RATE, PARITY AND FRAMING BITS. Datum Inc bc632D Wall Mount LED Display (Rev A)

  • Page 72: Command Formats

    B.5.2 COMMAND FORMATS There are two different ways to program the bc632D. You may use the remote keyboard or you may program it with the serial port. However, you can not do both simultaneously. Commands should not be issued while the unit is being programmed with the remote keyboard.

  • Page 73: Master

    The message format is: MASTER x where x is 0 (Master off) or 1 (Master on). B.5.2.4 SET REAL TIME CLOCK To set the internal clock of the bc632D, use this command: TIME hh:mm:ss MM/dd/yy w Where: hh is the hours.

  • Page 74: B.5.2.5 Source

    Each step has a text label which can be displayed along with the time. The format of the Label message LABEL s labeltext Where: s is the step (1-8). labeltext is the content of the label, up to 14 characters. bc632D Wall Mount LED Display (Rev A) Datum Inc...

  • Page 75: Format

    (DW = Day of week (MON-SUN), MON/D/YR is month, day, year.) 4. LBL DDD.FRACT (LBL = first three label characters, DDD= days, FRACT = 1/10,000 of a day.) 5. LABEL (Alphanumeric label with no time data.) Datum Inc bc632D Wall Mount LED Display (Rev A)

  • Page 76: Color

    To change the color of a step, use this command: COLOR s x Where: s is the step (1-8) x is the color: 1 - Red. 2 - Green. 3 - Yellow. bc632D Wall Mount LED Display (Rev A) Datum Inc...

  • Page 77: Duration

    B.5.2.12 STEP To force the display to jump to a specific step, use the Step command. This is equivalent to pressing SHIFT-<number> on the remote keyboard. The format is: STEP s Datum Inc bc632D Wall Mount LED Display (Rev A)

  • Page 78: Set

    You can not have a sequence of display formats as described in the Section 3.3.1 of the bc632D User’s Guide. The time source should be programmed to the Internal clock. On power-up, the display will show the contents of the internal clock, as normal.

  • Page 79: Start

    The display will respond with a series of commands that are identical with the ones described in this appendix. An example response to the Echo command is: ADDR aaa. EVENT O. MASTER 0. SOURCE 1 9. LABEL 1 Labeltext1. FORMAT 1 1. COLOR 1 1. Datum Inc bc632D Wall Mount LED Display (Rev A) B-11...

  • Page 80: End

    FORMAT 1 1 Display C DDD HH:MM:SS format. COLOR 1 2 Display in green. LINK 1 0 Do not link to next step. STEP 1 Start at this step. End of programming. B-12 bc632D Wall Mount LED Display (Rev A) Datum Inc...
  • Page 81 SOURCE 2 2 SOURCE 3 3 LABEL 1 labeltext1 Set up labels. LINK 8 1 Last command. End. At this point display will reset and begin running with new programming. Countdown Datum Inc bc632D Wall Mount LED Display (Rev A) B-13...
  • Page 82 Datum Standard Countdown (Datum CD0) This display shows a typical sequence of countdown operation. The display is running step 1 and the time source is the Datum CD0. A special format is being used (CC SH:HH:MM:SS). ADDR aaa Talk to display aaa.

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