TPRO-PC104 TSAT-PC104
Contents
1. TPRO PC TOA TSAT PC 104 Spectracom Corporation 7 Interrupts 7 1 Introduction The TPRO PC104 can be programmed to request interrupts at the IRQ level configured by P2 upon selectable conditions Interrupts can be enabled by writing a 1 into the corresponding interrupt enable bit in Base Address 1 Table 7 1 Enabling Interrupts ph Condition Asserted By User Action To Dessert Condition Action To De assert User Action To Dessert Condition ondition External event or user command causes I O Read data from FIFO until FIFO FIFO Not Empty oe to write data empty or Write to Base 4 User programmed START or STOP Match atch Flag Set atch Flag Set MATCH time is detected MO Wie to base s1 winbta t Write MO Wie to base s1 winbta t base 1 with bit 3 1 Heartbeat Flag Set Periodic heartbeat pulse has occurred I O Write to base 1 with bit 4 1 7 2 Commands Commands are sent to the TPRO PC104 command register Base Address 2 as a sequence of bytes All commands should be spaced at least 100us apart so the TPRO PC104 firmware has sufficient time to handle each command Without any commands on cold or warm start the TPRO PC104 will automatically synchronize to modulated timecode input or for TSAT PC to a valid GPS receiver input There are commands for Setting time Setting propagation delay correction for modulated code input Disabling synchronization to input Re enabling synchronization to input2. TPRO PC 104 104 Spectracom Corporation 12 4 Interrupt Crashes Ascertain that the host interrupt vector level is correctly initialized When using the FIFO NOT EMPTY interrupt selection disable the interrupt and enable it either at the TPRO PC104 or at the host interrupt controller while reading the FIFO otherwise it could cause nested FIFO NOT EMPTY interrupts as each byte is read from the FIFO and the IRQ line may toggle 12 5 Board Never Syncs to Input Code or IPPS Loss of sync should be asserted in many cases If the loss of sync status bit is O which indicates an error its assertion does not mean that there is a fault in the board NOTE Remember that there is an approximate 20 second delay from power on until the TPRO PC104 jam syncs to the input code A longer delay of up to one minute occurs for a TSAT PC104 doing a start with an up to date satellite almanac A very long delay of up to 45 minutes occurs for a TSAT PC104 doing a start with invalid over 2 weeks old almanac data or an initial position that is grossly e g over 1000 km in error If the status LED does not indicate a decodable input signal then the TPRO PC104 does not see a signal that it can decode Check the signal amplitude and connections Both the signal and side of the input code should be connected Remember that the input is differential for common mode noise rejection As a last resort examine the input sig
3. 1 0 uS max antenna in stationary position Position 25 m SEP w o SA 82 feet Altitude 0 m to 18 000 m 0 to 59 055 feet Size 147 mm Diam 100 mm H 5 8 Diam 3 9 H Pole Mount 1 00 I D 14 tuns inch straight not tapered Operating Temp 30 to 70 C 22 to 158 F Storage Temp 55 to 100 C 67 to 212 F Waterproof Submersion to 1 m Salt Fog MIL STD 202F Method 101D Condition B Synchronizable Timecode Generator User Manual 2 3 Spectracom Corporation TPRO PC104 TSAT PC 104 2 4 Synchronizable Timecode Generator User Manual Spectracom Corporation TPRO PCTOA TSAT PC 104 3 Input Output Pin Assignments 3 1 Time Code Input BNC Connector J1 The timecode input BNC connector is located nearest the 15 pin D type connector 3 2 IRIG B Output BNC Connector J2 The IRIG B output BNC connector is located farthest from the 15 pin D type connector 3 3 Synchronized Reference Clock Output 1 Table 3 2 JP1 Header JP1 Pin User Connection 1 2 1 kHz 1000 PPS 3 4 1 MHz 5 6 3 MHz 7 8 5 MHz 9 10 10 MHz 11 12 1 PPS Input Reference M Option only The optional reference output clocks are user configurable via JP1 header adjacent to J1 BNC connector Connection to reference clock outputs are obtainable via connector P1 pin 15 3 4 Connector Pinout for TPRO PC104 only Table 3 1 P1 Connector P1 Pin User Con
4. Repetition Rate 1000 events per second max Timing Resolution 1uS Input Voltage Table 2 4 1 PPS Sync Input Specifications Option M Only 2 4 V min 16 0 V max high 500 uA max at 5 Vin 12 mA max at 16 Vin Rise Fall Time Trigger Edge 500 nS max Rising 1PPS Accuracy Must be 100 ppm or better H One pulse per second Table 2 5 Match Out ut Specifications 3 8 V min at 32 mA high Output Voltage 0 4 V max at 64 mA low Setability 1 Synchronizable Timecode Generator User Manual Spectracom Corporation TPRO PC104 TSAT PC 104 Table 2 6 On board Clock Specifications Resolution 1 uS Range Date Format Synchronization Time Stability 366 23 59 59 999999 Integer 001 366 lt 8 seconds Disciplined to timecode 2x107 Undisciplined 1 5x10 Table 2 7 General Specifications Size Typical PC104 Module Dimensions 90 17 mm 3 550 in X 95 89 mm 3 775 in Power from ISA bus 5V 5 425 mA max 12V 5 TPRO PC104 225 mA max TSAT PC104 450 mA max 12V 5 50 max Operating Temperature 0 to 70 C 22 to 158 Storage Temperature 40 to 80 C 40 to 176 Connectors BNCs for timecode input and output DB15 socket for timecode input output heartbeat output match output time tag input 1 PPS input output and synchronized reference cl
5. Square wave starts immediately NOTE The heartbeat output is present regardless of whether the board is in sync or freewheeling The power on default is 1PPS pulse mode Synchronizable Timecode Generator User Manual 77 TPRO PC 1OA TSAT PC 104 7 8 Spectracom Corporation Synchronizable Timecode Generator User Manual TPRO PC 104 TSAT PC 104 Spectracom Corporation 8 Reading GPS Latitude and Longitude The Report Latitude 5Fh and Report Longitude 5Eh commands cause the TPRO PC104 to respond by putting 10 bytes of data in the on board FIFO in the formats shown in the tables below The data is valid only for TSAT PC104 models tracking at least 4 satellites Table 8 1 Latitude Command FIFO Data Response Nom 3 10 degrees 10 degrees ro mies Table 8 2 Longitude Command FIFO Data Response Not defined Not defined Not defined Not defined Not defined Not defined Synchronizable Timecode Generator User Manual 8 1 TPRO PC 1OA TSAT PC 104 Spectracom Corporation Reading TSAT PC104 GPS antenna altitude course over ground and satellite tracking The Report Altitude 5Dh and Report COG SATS 5Ch commands cause the TPRO PC104 to respond by putting 10 bytes of data in the on board FIFO in the formats shown in the tables above The altitude and COG data is valid only for TSAT PC104 models that are tracking at least 4 satellites Table 8 3 Altitude Command FIFO Data Res
6. A C or E before freezing reading low order bits at base 8 e Reading data especially if there are numerous zeros before the TPRO PC104 has synchronized to the input code e Remember that there is an approximate 20 second delay from power on until the TPRO PC 104 jam syncs to the input code e Performing a TIME SET command sequence with unusual values 12 3 Bad Data from FIFO Port If the program does not crash but has incorrect data from the FIFO the problem could be e The code does not check the FIFO NOT EMPTY bit in the STATUS REGISTER for 1 before reading each byte from the FIFO If the data contains 00 or seems to slip e g hours show up where minutes are expected this is very likely the reason e Reading data especially if there are numerous zeros before the TPRO PC104 has synchronized to the input code NOTE Remember that there is an approximate 20 second delay from power on until the TPRO PC104 jam syncs to the input code A longer delay of up to one minute occurs for a TSAT PC104 doing a start with an up to date satellite almanac A very long delay of up to 45 minutes occurs for a TSAT PC104 doing a start with invalid over 2 weeks old almanac data or an initial position that is grossly e g over 1000 km in error e Performing a TIME SET command sequence with incorrect values e Using an address that maps into memory or into a different device Synchronizable Timecode Generator User Manual 12 1
7. information as to the claimed defect Spectracom products shall not be returned unless a return authorization number is issued by Spectracom Spectracom products must be returned with the description of the claimed defect and identification of the individual to be contacted if additional information is needed Spectracom products must be returned properly packed with transportation charges prepaid Shipping expense Expenses incurred for shipping Spectracom products to and from Spectracom including international customs fees shall be paid for by the customer with the following exception For customers located within the United States any product repaired by Spectracom under a warranty repair will be shipped back to the customer at Spectracom s expense unless special faster delivery is requested by customer Spectracom highly recommends that prior to returning equipment for service work our technical support department be contacted to provide trouble shooting assistance while the equipment is still installed If equipment is returned without first contacting the support department and no problems are found during the repair work an evaluation fee may be charged EXCEPT FOR THE LIMITED WARRANTY STATED ABOVE SPECTRACOM DISCLAIMS ALL WARRANTIES OF ANY KIND WITH REGARD SPECTRACOM PRODUCTS OR OTHER MATERIALS PROVIDED BY SPECTRACOM INCLUDING WITHOUT LIMITATION ANY WARRANTY MERCHANTABILITY OR FITNESS FOR
8. length is 500 feet The connectors on the extension cables are not weatherproof only the first 100 feet can be outdoors The cable consists of several twisted pairs not coaxial cable and a foil shield NOTE Spectracom recommends applying an appropriate silicon grease to the cable connection at the GPS antenna in order to protect the connection from moisture An additional weatherproofing kit P N 221213 containing butyl rubber and plastic tape is also available from Andrews Corporation US 800 255 1479 1 3 Inventory Before installing the board please verify that all material ordered has been received The TSAT PC104 is delivered with a 100 foot cable with pre installed connectors a GPS receiver antenna housed together in a single enclosure and a user manual The TPRO PC104 is delivered with mating connector 15 pin and a user manual If there is a discrepancy please contact Spectracom Customer Service at US 585 321 5800 12 Synchronizable Timecode Generator User Manual Spectracom Corporation TPRO PC104 TSAT PC 104 1 4 Inspection and Support Unpack the equipment and inspect it for damage If any equipment has been damaged in transit please contact Spectracom Customer Service at US 585 321 5800 If any problems occur during installation and configuration of your Spectracom product please contact Spectracom Technical Support at US 585 321 5823 or US 585 321 5824 CAUTION Electronic equipment is sensitive to Electrostatic Di
9. put 100s of mS through 1s of uS into the HH MM SS part of time register by writing to Base 2 81 92 B4 C5 D6 xx 123456 seconds This has specified a time of 123 01 23 45 123456 Write either E2 load start time or E3 load stop time to Base 2 Note that the E2 or E3 command must be sent at least 250 mS before the commanded time occurs Enable Match interrupt if desired by ORing hex 40 to Base 1 The board can also be polled to determine if the start time has occurred Read the value at Base 1 then AND this value with hex 08 Ifthe result MATCH flag is non zero i e if bit 3 is set the start time has occurred It is necessary to clear this flag by writing a one to bit 3 at Base 1 before the next start time can be detected Note that the actual value written must take into account the other bits in this register The MATCH flag may be set during power on reset This is normal 7 4 Synchronizable Timecode Generator User Manual TPRO PC TOA TSAT PC 104 Spectracom Corporation 7 9 Programming the Heartbeat Output Not Applicable to Option HB1PPS The heartbeat can be programmed to be either a pulse or a square wave The specified rate must be an exact multiple of 1 000 uS The range of programmable rates is Minimum Rate lowest frequency 21 845 mS 45 7771 Hz Maximum Rate highest frequency 1 000 uS 1 000 MHz Pulse Width time low pul
10. 3 13 1 13 1 1 13 1 2 14 OPTIONS AND ACCESSORIES 11 1 HBIPPS Cannot Be Combined with Option LOR1 11 1 pos Cannot Be Combined with Option HB IP PS ana ae nenne 11 1 M Cannot Be Combined with Option TTLLAY2 or Installed on 5 104 11 1 RECONN nm 112 TTLLAY2 Cannot Be Combined with Option M Cannot Be Installed on TSAT P C104 Compatible ONLY aa 11 2 ACCESSIONS sata EU TA 11 3 CAB BOT Not Compatible with TSAT PC 104 een na 11 3 CAB BO2 TPRO PC104 with Option M Only Not Compatible with TSAT PC104 11 3 TRIM gt GAB DDAIOH ATSATPE ION Nein aito 11 3 TRIM CAB STD TSAT P 11 3 TROUBLESHOOTING 12 1 BUS laser 12 1 Bad Data from 16 bit Data Registers es in a Aal 12 1 Bad Daladrom FIFO POT aqu taa m dite atti em amp LINE dn 12 1 Fife rtp E CFR oaa d user ana ERN sca Can decal 12 2 Board Never Syncs to Input Code 5 tiani dais 12 2 OPTIONAL PREVENTIVE MAINTENANECI 13 1 Oscillator Aging 13 1 Necessary ee ed t Ve batir Ei e need ec 1
11. 3 1 PT OCC gt e 13 1 DRIVER SUPPORT s scsscsv ossssovskesdssossse ossesoosssnovssss sovsososerseonsvssesossssreses 14 1 Synchronizable Timecode Generator User Manual Spectracom Corporation TPRO PC104 TSAT PC 104 1 Overview This manual provides comprehensive information on the system architecture specifications and operation of the Spectracom TPRO PC104 and TSAT PC104 Synchronizable Time Code Generators The TPRO PC104 is a precision clock that automatically synchronizes to standardized time code signals or for the TSAT PC104 configuration to the GPS satellite system and can be read from a host PC bus processor It is used for time tagging in 16 bit and 32 bit ISA bus systems Time tagging can be caused by reading four 16 bit time registers or by a logic pulse from the outside world an external event Typically the 16 bit reads are used for software initiated time tagging for example time tagging the time a block of data transfer starts or completes Reading the first 16 bit time register for units of microseconds through units of milliseconds also freezes the tens of milliseconds through hundreds of days External events are usually used for time tagging hardware related events for example the exact time of a radar transmit pulse because the added error of variation in software delays degrades the accuracy of a software initiated time tag The time tag data for external events is tran
12. 3 2 TSAT PC104 P1 Connector Pinout P1 Pin Antenna Pin Antenna Connection Antenna Color User Connection 1 Do not connect 2 Do not connect 3 1 12 Volts Red 4 Time Tag input 5 9 Ground Black Ground 6 Heartbeat output 7 Ground Shield 8 Match Time output 9 11 1PPS Orange White 10 5 RXD Yellow 11 4 RXD Brown 12 3 TXD Orange 13 2 TXD Violet 14 12 1PPS Black White 15 Do not connect The antenna cable wires are twisted pairs as follows Red with Black Orange with Violet Yellow with Brown Green with Blue Pins 3 and 5 Pins 12 and 13 Pins 10 and 11 Pins 15 and None Orange White with Black White Pins 9 and 14 Note that the following antenna cable wires are connected at the antenna end but not at J1 Antenna Pin Color 6 White 7 Gray 10 Blue The pigtail on the 15 pin end of the cable is used for custom options if any 3 2 Synchronizable Timecode Generator User Manual Spectracom Corporation TPRO PC104 TSAT PC 104 4 Configuration 4 1 I O Base Address Configured by Switch SW1 8 bit DIP switch on bottom side of assembly The configurable address base bits are A11 through A4 SW1 maps address base bits A11 through A4 to SW1 bit 8 through SW1 bit 1 A switch in the ON or closed position selects logic 1 high and when open or in the OFF position re
13. A PARTICULAR PURPOSE Spectracom shall have no liability or responsibility to the original customer or any other party with respect to any liability loss or damage caused directly or indirectly by any Spectracom product material or software sold or provided by Spectracom replacement parts or units or services provided including but not limited to any interruption of service excess charges resulting from malfunctions of hardware or software loss of business or anticipatory profits resulting from the use or operation of the Spectracom product or software whatsoever or howsoever caused In no event shall Spectracom be liable for any direct indirect special or consequential damages whether the claims are grounded in contract tort including negligence or strict liability EXTENDED WARRANTY COVERAGE Extended warranties can be purchased for additional periods beyond the standard five year warranty Contact Spectracom no later than the last year of the standard fiveyear warranty for extended coverage SPECTRACOM 95 Methodist Hill Drive Rochester NY 14623 1 585 321 5800 FAX 1 585 321 5218 www spectracomcorp com sales spectracomcorp com Spectracom Corporation TPRO PC104 TSAT PC 104 5 3 1 5 4 6 6 1 6 2 6 3 7 7 1 1 2 1 3 7 4 Lb 1 6 1 1 7 8 1 9 7 10 8 9 10 10 1 10 2 Table of Contents OVERVIEW e 6ss0esssssesesss ssessdssnsdsss es essss esssonssiseseien 1 1 General I
14. C104 When the COPY TIME SET REGISTER command EO is received the time set buffer is copied to the clock 7 4 Setting Propagation Delay Correction The operator can set the compensation for propagation delay between the timecode source and the TPRO PC104 location On cold or warm start the TPRO PC104 assumes a propagation delay correction of 0 us The sequence of commands for setting propagation delay correction is Send CLEAR TIME SET REGISTER command FOh Send SET TIME SET REGISTER commands 0 lt gt to 3 bcd for 108 10 us 10 us 10 us digits in any order Send SET COPY TIME SET REGISTER command EOh Remember to delay at least 100 us between sending each command byte For example to set a propagation delay correction value of 1234 us send the sequence FO 31 22 13 04 Some central timing facilities transmit time codes advanced by 1 millisecond To correct for the advanced timecode it may be desirable to use a negative propagation delay correction setting Propagation delay settings of 9000us to 9999us are used to set NEGATIVE propagation delay correction values of 1000us to 1us respectively For example to set 500 us use a setting of 9500 us So the propagation delay correction range of the TPRO PC104 is 1000 us to 8999 us The TPRO PC104 can distinguish between COPY TIME SET commands used for setting prop
15. NC connector If both 1PPS and timecode inputs are present the board syncs to the incoming timecode and ignore the 1PPS Note that Enable Disable Resync commands 4D and 4E apply both to the 1PPS and the timecode input Commands and E9 are not supported NOTE The board expects the 1PPS input to be continuous If the 1PPS signal stops pulsing after the board establishes initial sync the board will continue to increment time freewheel However if the 1PPS signal resumes after a period of freewheeling the board may reset the time to 001 00 00 00 000000 This is due to the fact that the 1PPS occurs outside of the narrow window in which the board expects it either because the 1PPS has moved or because the board s time has drifted during freewheeling Specifications of the 1PPS input are Input Voltage high 2 4 V min 16 0 V max Input Current 500 uA max at 5 0 V 12 mA max at 16 0 V Input Voltage iuis eee ee 0 2 V min 0 8 V max Input Current low 500 uA max Rise Fall Time au aa 500 nS max Synchronizoble Timecode Generator User Manual 9 1 TPRO PC 1OA TSAT PC 104 Spectracom Corporation Trigger ea tenu enews dena et I uad Rising 1PPS Accuracy Must be better than 100 ppm cannot be supplied from a tape playback 9 2 Synchronizable Timecode Generator User Manual TPR
16. NC connectors are extended from the DB 15 connector in the following manner Inputs Pin Time Tag external event 4 1PPS Pulse Per Second 15 Outputs Pin HeartBeat 6 Match Time 8 3 MHz 14 11 2 3 TRIM CAB D D 100 TSAT PC104 Only This cable acts as an extension cord for a board that is using the Trimble GPS Receiver It consists of a 100 cable with DB 15 connectors one male one female on the ends It connects to a board on one end and to the standard TRIM CAB STD cable on the other end It does not connect directly to the Trimble GPS Receiver 11 2 4 TRIM CAB STD TSAT PC104 Only This is the standard 100 cable for the Trimble GPS Receiver Synchronizable Timecode Generator User Manual 11 3 TPRO PC 1OA TSAT PC 104 Spectracom Corporation 11 4 Synchronizable Timecode Generator User Manual TPRO PC 1OA TSAT PC 104 Spectracom Corporation 12 Troubleshooting 12 1 Bus Crashes If when trying to access the TPRO PC104 the program crashes due to a bus error the problem may be that the board address configured in P3 does not agree with the program being used 12 2 Bad Data from 16 bit Data Registers If the program does not crash but starts to get peculiar data from the 16 bit registers illegal BCD etc the problem could be e Using an address that maps into a different PC bus device e Using a base address that maps into both the TPRO PC104 and another PC bus device e Accessing high order bits at base
17. NDS TO HEARTBEAT DIVIDE SQUARE WAVE GENERATE no forced jam COPY TIME SET REGISTER MINUTES SECONDS TO HEARTBEAT DIVIDE SQUARE WAVE GENERATE with forced jam REPORT FIRMWARE ID IN FIFO E CLEAR SET TIME REGISTER F 72 Synchronizable Timecode Generator User Manual T TPRO PC 10A TSAT PC 104 Spectracom Corporation 7 3 Setting Time The operator can set the TPRO PC104 to use an input reference for applications where the input reference is not used If the operator does not preset a time a default preset of 0 days through seconds is used The operator must disable input synchronization before setting time or the TPRO PC104 firmware will just switch back from the commanded time to the input time as soon as the input is validated The sequence of commands for setting time is Send CLEAR TIME SET REGISTER command FOh Send SET TIME SET REGISTER commands 5 lt bcd gt through 8 lt BCD gt for 107 days through 10 seconds in any order Send COPY TIME SET REGISTER command EOh At least 100 us should be allowed between sending each command byte For example to set time to 123 days 01 hours 23 minutes 45 seconds send the sequence FO 51 62 73 80 91 A2 B3 C4 05 EO As each SET TIME SET REGISTER command is sent the corresponding digit is set in an internal time set buffer in the TPRO P
18. O PC 1OA TSAT PC 104 Spectracom Corporation 10 Preventive Maintenance 10 1 Oscillator Aging Adjustment The oscillator aging adjustment for the TPRO PC104 corrects for the effects of aging on the natural crystal oscillator frequency to insure that the undisciplined frequency of the 10 MHz oscillator is 10 000000 MHz 10 Hz Preventive maintenance should be performed once every 2 years The following items are required for testing e A digital frequency counter with 0 1 PPM or better accuracy and 1 HZ or better resolution be sure that the counter is calibrated e Atrimmer capacitor adjustment tool non metallic screwdriver e the unit is equipped with a custom crystal oscillator consult the oscillator data sheet for adjustment method Proceed as follows e Disconnect J1 Connect a calibrated frequency counter to the 1 MHz signal at J1 Pin 14 Use Pin 5 or 7 for ground or connect to 10MHz test point W4 and use W5 for ground e Before powering up the system disconnect the timecode input and or the external 1PPS input to the board so that the oscillator will be undisciplined e Power the system up and wait at least five minutes for the on board crystal oven temperature to stabilize Then adjust R22 for 1MHz 1Hz or 10MHz 10Hz if connected to WA e Power down the system and reconnect any disconnected inputs 10 2 IRIG B Output Adjustment IRIG B output adjustment is seldom needed in the field With the TPRO PC104 at a
19. Simulating power on reset of TPRO PC104 firmware Reading TSAT PC104 GPS antenna latitude Reading TSAT PC104 GPS longitude Reading TSAT PC104 GPS altitude Reading TSAT PC104 GPS speed course over ground satellites visible satellites tracked e Reading TSAT PC104 GPS dilution of precision multipliers Synchronizable Timecode Generator User Manual 7 1 TPRO PC 1OA TSAT PC 104 Spectracom Corporation Table 7 2 List of TPRO PC104 Commands High Nibble SET PROPAGATION DELAY 10 us SET PROPAGATION DELAY 10 us 1 2 HS Low Nibble SET TIME SET REGISTER 10 MINUTES 10 minutes also used for 16 heartbeat counts SET TIME SET REGISTER 10 MINUTES 10 minutes also used for 16 heartbeat counts SET TIME SET REGISTER 10 SECONDS 10 seconds also used for 16 heartbeat counts SET TIME SET REGISTER 10 SECONDS 10 seconds also used for 16 heartbeat counts COPY TIME SET REGISTER TO CLOCK TIME COPY TIME SET REGISTER TO START STOP HOLD COPY START STOP HOLD TO START MATCH REGISTER DAYS SECONDS AND TIME SET REGISTER HOURS MINUTES SECONDS TO START uS COPY START STOP HOLD TO STOP MATCH REGISTER DAYS SECONDS AND TIME SET REGISTER HOURS MINUTES SECONDS TO STOP uS CLEAR MATCH FLAG COPY TIME SET REGISTER MINUTES SECONDS TO HEARTBEAT DIVIDE PULSE GENERATE no forced jam COPY TIME SET REGISTER MINUTES SECONDS TO HEARTBEAT DIVIDE PULSE GENERATE with forced jam COPY TIME SET REGISTER MINUTES SECO
20. TPRO PC104 TSAT PC104 SYNCHRONIZABLE TIMECODE GENERATOR WITH ISA BUS INTERFACE User Manual 95 Methodist Hill Drive Rochester NY 14623 Phone 585 321 5800 Fox 585 321 5219 www spectracomcorp com Part Number 1 155 5001 0050 Manual Revision A v2 0 June 2006 Copyright 2006 Spectracom Corporation The contents of this publication may not reproduced in any form without the written permission of Spectracom Corporation Printed in USA Specifications subject to change or improvement without notice Spectracom NetClock Ageless TimeGuard TimeBurst TimeTap LineTap MultiTap Versalap and Legally Traceable Time are Spectracom registered trademarks All other products are identified by trademarks of their respective companies or organizations All rights reserved SPECTRACOM LIMITED WARRANTY LIMITED WARRANTY Spectracom warrants each new product manufactured and sold by it to be free from defects in software material workmanship and construction except for batteries fuses or other material normally consumed in operation that may be contained therein AND AS NOTED BELOW for five years after shipment to the original purchaser which period is referred to as the warranty period This warranty shall not apply if the product is used contrary to the instructions in its manual or is otherwise subjected to misuse abnormal operations accident lightning or transient surge repairs or modifications not perfo
21. Table 11 2 Firmware Byte Sequence Byte 0 5A hex command code echoed 1 5A hex command code echoed Bit 7 6 5 4 3 2 1 0 2 8 4 2 1 88 78 68 58 3 57 56 55 54 53 52 51 50 4 67 66 65 64 63 62 61 60 5 77 76 75 74 73 72 71 70 6 87 86 85 84 83 82 81 80 7 97 96 95 94 93 92 91 90 8 9 not specified Where 2 digit numbers report to bit position in IRIG B frame and 8 4 2 1 is the units of seconds for the IRIG B frame containing reported data Data is double buffered so that all data 11 2 Synchronizable Timecode Generator User Manual TPRO PC 104 104 Spectracom Corporation reported corresponds to reported second Note that 99 89 79 69 59 are not reported because they cannot be used for data bits They are reserved for reference makers 11 2 Accessories 11 2 1 CAB BO1 Not Compatible with TSAT PC104 This cable provides multiple connections for a variety of inputs and outputs via the DB 15 connector on the board Female BNC connectors are extended from the DB 15 connector in the following manner Inputs Pin Time Tag external event 4 Outputs Pin Heartbeat 6 Match Time 8 3MHz 14 11 2 2 CAB BO2 TPRO PC104 with Option M Only Not Compatible with TSAT PC104 This cable provides multiple connections for a variety of inputs and outputs via the DB 15 connector on the board Female B
22. The TPRO PC104 and TSAT PC104 operates automatically as soon as the host computer system performs the power on reset To change the operating parameters or read data consult Chapter Seven 5 3 1 LED Status A card edge LED LED5 flashes a status pattern to assist in diagnosing installation errors The pattern is a sequence of short and long flashes Trailing short flashes are deleted so the status pattern can repeat more frequently Table 5 1 details these patterns Table 5 1 LED Flash Patterns Flash Position Meaning of Short cleared Flash Meaning of Long set Flash GPS satellite receiver being used for Modulated timecode input being used for time reference time reference Synchronization to better than 5usec Synchronization to better than 5usec not verified with last 5 seconds verified within last 5 seconds 1 PPS pulse from GPS satellite receiver is 1PPS Pulse from GPS satellite bad In applications with modulated receiver is OK timecode inputs only this status bit will always be set bit will always be set GPS satellite receiver is not tracking enough satellites for accurate UTC time In applications with modulated timecode inputs only this status bit will always be set Timecode input not decodable In Timecode input being decoded applications without modulated timecode inputs this status bit will always be set If using 1PPS set NEXT 1PPS TIME d Waiting for NEXT 1PPS TIME 7 command sequence has be
23. Time Tagging When an external event logic pulse occurs the TPRO PC104 copies 10 bytes of time data into the on board FIFO It takes approximately 50 us until the last of the 10 bytes is copied into the FIFO The transfer time fluctuates because the microcomputer may be interrupted while putting data in the FIFO The time data is accurate to the exact microsecond at which the event occurred and the accuracy is not affected by the transfer time The operator can simulate the occurrence of an external event pulse by doing a byte I O write any data value to Base Address 3 The host program reads captured time information 100s of days through units of us a total of 10 bytes sequentially from the FIFO through the TPRO PC104 bus interface The host testing the FIFO EMPTY bit Bit 0 performs handshaking of the TPRO PC104 status register base 1 for 1 before each byte is read from the FIFO output base 0 It is important that the operator empty the FIFO of stale data when their program is initialized This can be done by continuously reading the FIFO until the FIFO EMPTY status bit is 0 for at least 100 us If the FIFO is full this could take approximately 1024 reads The data format for FIFO time stamps 15 Table 6 6 FIFO Time Stamp Data Format not defined not defined ELSE o Synchronizable Timecode Generator User Manual 63 TPRO PC 1OA TSAT PC 104 64 Spectracom Corporation Synchronizable Timecode Generator User Manual
24. Z 1 Pulse Per Second Output 1 5 and a Ground Output The 3 pin header is located on U21 Pins 1 2 and 3 The 3 pin header designations are JP4 Pin 11 is 1MHZ e JP4 Pin 13 is 1PPS e JP4 Pin 15 is Ground To set 1PPS program the Heartbeat output for 1PPS The 1PPS can be programmed for a rate between 0 0152593 HZ and 500 Hz 11 1 3 M Cannot Be Combined with Option TTLLAY2 or Installed on TSAT PC104 Option M provides a 1PPS synchronization input on Pin 9 and Pin 14 of the D type connector The 1PPS input can be RS 485 differential The A signal connects to P1 Pin 9 and the B signal connects to P1 Pin 14 The 1PPS input can also be ground referenced 1PPS signal on P1 Pin 9 ground to P1 Pin 5 or Pin 7 A differential timecode input IRIG B IRIG A NASA 36 or autodetect can be applied to the BNC connector If both 1PPS and Timecode inputs are present the board syncs to the incoming timecode and ignores the 1PPS Note that commands 4D and 4E enable disable sync apply to both the 1PPS and the timecode input Commands and E9 are not supported NOTE The board expects the 1PPS input to be continuous If the 1PPS signal stops pulsing after the board establishes initial sync the board will continue to increment time freewheel However if the 1PPS signal resumes after a period of freewheeling the board may reset time to 001 00 00 00 000000 This is due to the fact that the 1PPS occurs outside of a narr
25. ae een E6 Square wave starts at end of next period E7 Square wave starts E8 To use the heartbeat to generate a periodic interrupt first specify the frequency as described above pulse or square wave then enable the interrupt by ORing hex 20 to Base 1 To disable this interrupt AND hex DF to Base 1 Note that this operation may affect other bits in this register Software can also poll the board to determine if a heartbeat has occurred Read Base 1 then AND this value with hex 10 If the result is non zero 1 if bit 4 is set then a heartbeat has Synchronizable Timecode Generator User Manual 7 5 TPRO PC104 TSAT PC 104 Spectracom Corporation occurred It is necessary to reset this flag before detecting the next heartbeat Reset the flag by writing hex 10 to Base 1 Note that this operation may affect other bits in this register Example 1 Output a pulse once every 5 mS Begin outputting immediately First compute N 3 5 10 105 15000 base 10 Next convert 15000 to hexadecimal Thus 15000 base 10 becomes 3A98 base 16 Finally send the command sequence A3 BA C9 D8 E6 to the command register at base address 2 Use the DOS Debug program to test the heartbeat output as follows C gt debug 302 a3 3 to divide register most significant nibble 302 A to divide register 302 9 9 to di
26. agation delay and COPY TIME SET commands used for setting time by noting that different intervening commands have occurred after the CLEAR TIME SET REGISTER command Synchronizable Timecode Generator User Manual 73 TPRO PC 104 104 Spectracom Corporation 7 5 Disabling Synchronization to Input To prevent the TPRO PC104 from synchronizing its time to input signals send the DISABLE RESYNC 4Eh command to the TPRO PC104 This command is normally used when the TPRO PC104 time is set using the Set Generation Time procedure 7 6 Re enabling Synchronization to Input To release the TPRO PC104 from a DISABLE RESYNC command send the ENABLE RESYNC 4Dh command to the TPRO PC104 The cold or warm start condition for the TPRO PC104 is resync enabled 7 7 Simulating Power on Reset of TPRO PC104 Firmware The RESET 4Fh command to the TPRO PC104 resets the on board Z80 microcomputer 7 8 Programming the MATCH Start Stop Output For Pin 8 This output goes high at the start time and low at the stop time The MATCH interrupt occurs at the start time The MATCH flag goes true at the start time and remains true until the operator clears it with a software command First disable the Match interrupt by ANDing BF to Base 1 Put the days seconds into the Time Set Register by writing to Base 2 FO Clear time set register 51 62 73 80 91 2 C4 05 123 01 23 45 day second E1 Copy into Hold register Then
27. com Corporation 5 Installation 5 1 Before Installation Shut down the system and install the TPRO PC104 board in a 16 bit slot The TPRO PC104 has inputs and outputs that should be connected for the users requirements There are up to three inputs from the external world input timecode if used a TTL external event pulse if used and 1 PPS TTL time pulse if used Timecode input to the board is connected at J1 center Pin or side to Pin 1 shield or side to Pin 2 or to BNC connector J2 For the TPRO PC104 if input timecode or 1PPS input Option is not provided the board will provide local timing starting at 000 days 00 hours 00 minutes 00 seconds TTL external event pulses are connected at P1 The external event pulses can come from external user equipment or pulse outputs from the TPRO PC104 at P1 can be looped back and used as external event inputs with a simple jumper connection If the 1 PPS option Option is to be used P1 is used for 1PPS input The 1PPS input can be RS 485 with A connected to P1 Pin 9 and B connected to P1 Pin 14 The 1PPS input can also be ground referenced 1PPS signal on P1 Pin 9 ground to P1 Pin 5 or Pin 7 The TSAT PC104 is provided with a short adapter cable which mates with P1 at one end and with 3 antenna cable connectors at the other end Connect all the TSAT PC104 connectors Custom factory configurations will have a manual addendum detailing non standard I O configurat
28. d approximately 56 degrees from the equator orbiting the Earth once every 11 hours There are several different orbital planes providing continuous coverage to all places on Earth The GPS receiver uses an omni directional antenna the satellites move slowly across the sky they are not at fixed locations Synchronizable Timecode Generator User Manual 1 1 TPRO PC 1OA TSAT PC 104 Spectracom Corporation Each satellite transmits a spread spectrum signal centered at 1575 42 MHz When power is first applied the GPS receiver begins searching for the satellites It does this by searching for each satellite individually listening for each satellite s distinct spread spectrum hopping sequence This process can take a few minutes as the receiver iteratively locates satellites refines its position and determines for which satellites to search The GPS receiver retains the last known position when the power is switched off This results in faster satellite acquisition the next time it is switched on If the antenna has been moved more than a few miles however acquisition time will be slightly longer because it must first re compute the position 1 2 Your Spectracom GPS Receiver Your board s GPS receiver is built into the antenna housing and communicates to the board via a serial RS 422 interface Power 12V is supplied from the board The unit comes with a 100 foot cable Extension cables are available in 100 foot lengths The maximum total
29. e TSAT PC104 with a valid GPS signal or 1PPS input Option M propagation delay settings are neither needed nor used If absolute microsecond accuracy is required it is necessary to calibrate the TPRO PC104 when it is installed calibrate for propagation delay correction by comparing the on board clock time with a portable reference a 1 PPS GPS pulse is good for this The appropriate propagation delay correction setting is converged on rapidly by trial and error This setting does not need to be changed unless the location or cabling of the installation is changed In most cases determining the correct propagation delay setting needs the help of a special user program that lets the operator experiment with various propagation delay settings while zeroing in on the correct setting The normal user program should be capable of using the correct setting once it is determined Synchronizable Timecode Generator User Manual 5 3 TPRO PC 1OA TSAT PC 104 5 4 Spectracom Corporation Synchronizable Timecode Generator User Manual TPRO PC 1OA TSAT PC 104 6 Register Assignments Table 6 1 Register Assignments Spectracom Corporation nn an Bits Read Usage Write Usage 0 7 0 FIFO data n u 4 7 FIFO Output Ready Interrupt FIFO Output Ready Interrupt Enable Enable 6 MATCH Flag Interrupt Enable MATCH Flag Interrupt Enable _ 5 HEARTBEAT Flag Interrupt HEARTBEAT Flag Interr
30. edure 1 Power down the system 2 Connect a calibrated frequency counter to the 1 MHz signal at JP9 Pin 4 Use JP10 Pin 3 for ground 3 Before powering up the system disconnect the timecode input and or the external 1PPS input to the board so that the oscillator is undisciplined 4 Power the system up and wait at least five minutes for the on board crystal oven temperature to stabilize Then adjust the oscillator s on board trimmer for 1MHz 1Hz 5 Power down the system and reconnect any disconnected inputs Synchronizable Timecode Generator User Manual 13 1 TPRO PC 1OA TSAT PC 104 Spectracom Corporation 13 2 Synchronizable Timecode Generator User Spectracom Corporation TPRO PC 104 104 14 Driver Support Please contact your sales representative for information about Spectracom s bus level timing board driver support for Windows Linux VxWorks and a variety of other platforms You may also visit our website at www spectracomcorp com to download datasheets and manuals Synchronizable Timecode Generator User Manual TPRO PC 1OA TSAT PC 104 Spectracom Corporation 14 2 Synchronizable Timecode Generator User Manual Spectracom Corporation 95 Methodist Hill Drive Rochester NY 14623 www spectracomcorp com Phone 585 321 5800 Fax 585 321 5219
31. en Er performed Used for Option M only command Used tor Op an BH 5 4 Propagation Delay Adjustment Depending on the actual absolute time accuracy required in the user s application the TPRO PC104 can be commanded to correct for the time required for the timecode signal to travel the distance between the timecode source and the PC bus computer This delay time know as propagation delay time is approximately 3 3 microseconds us per kilometer for radio timecode transmission and approximately 5 us per kilometer for copper wire transmission Also a time delay on the order of 25 us may be caused by small phase shifts due to reactances at the timecode input To correct for propagation delay the TPRO PC104 can use a GPS satellite receiver is tracking enough satellites for accurate UTC time No serial data being received from GPS 4 GPS satellite receiver serial data being satellite receiver In applications with received OK modulated timecode inputs only this status 52 Synchronizable Timecode Generator User Manual TPRO PC 104 TSAT PC 104 Spectracom Corporation propagation delay correction setting ranging between 1000 because sometimes sources transmit early and 8999 us The default setting is 0 us after the TPRO PC104 is reset at power on or after a RESET command from the operator The operator can change the setting by a sequence of programmed commands to the command register on the TPRO PC104 NOTE lf using th
32. ency 2 mS 500 Hz Pulse Width time low pulse mode only 1 mS typical Programming Resolution ae ut 1mS To specify the rate or frequency compute the divide number N as follows To specify a period for a pulse or square wave compute N as follows 7 6 Synchronizable Timecode Generator User Manual TPRO PC104 TSAT PC 104 Spectracom Corporation uuu hehe t is the period in seconds To specify a frequency for a pulse or square wave compute N as follows N 1000 eo tenes F is the frequency in Hertz Verify that the computed value is in the range of 2 to 65 534 inclusive Convert N into hexadecimal base 16 notation For example if the desired output period is once every 25 seconds N 25 000 base 10 converted to hexadecimal notation yields N 0x61a8 Send the hexadecimal number to the board by outputting the following sequence to the command register 0x00f0 Clear the Holding Register 0x00a6 0x00b1 0x00ca 0c00d8 specifies N 0x61a8 The heartbeat output can be programmed to be a square wave or a pulse and can be programmed to begin immediately or at the beginning of the next cycle Send one of the following commands to command port 0x00e5 Pulse mode starts at beginning of next cycle 0x00e6 Pulse mode starts immediately 0x00e7 Square wave starts at beginning of next cycle 0x00e8
33. ion NOTE Spectracom recommends applying an appropriate silcon grease to the cable connection at the GPS antenna in order to protect the connection from moisture An additional weatherproofing kit P N 221213 containing butyl rubber and plastic tape is also available from Andrews Corporation US 800 255 1479 NOTE Before installing the TPRO PC104 in your system record the serial number the PWB Revision Level for example 7 or the firmware version labeled on EPROM 016 for example 99204223 and the version labels on FPGA devices U12 for example 4302B Rev A 1 This information will assist Spectracom in providing telephone support for your product s CAUTION Observe all ESD procedures when handling the board and the computer Before installing the board discharge static buildup by touching the metal frame of the computer with one hand and the protective bag containing the board with the other hand Open the protective bag only after static buildup has been safely discharged Synchronizable Timecode Generator User Manual 5 1 TPRO PC 1OA TSAT PC 104 Spectracom Corporation 5 2 TSAT PC104 only Install the combined antenna GPS receiver unit at a location with 360 views to within 10 above the horizon Attach the coaxial 1 PPS connector TNC and the 4 conductor serial connector to the antenna unit and route both 100 foot cables to the PC bus computer location Start the system 5 3 Operation
34. nal on an oscilloscope and make sure that it meets the input specifications of the TPRO PC104 When using 1PPS make sure that it is a good 1PPS Has a SET NEXT 1PPS TIME command sequence been performed Is the timecode carrier frequency stable to 100 PPM Does it make periodic large larger than 5 usecond time jumps Tape playback is very likely to have high frequency error unless a calibrated servo track is used for accurate speed control 12 2 Synchronizable Timecode Generator User Manual TPRO PC TOA TSAT PC 104 Spectracom Corporation 13 Optional Preventive Maintenance 13 1 Oscillator Aging Adjustment The oscillator aging adjustment for the TPRO TSAT PC104 corrects for the effects of aging on the natural crystal oscillator frequency to insure that the undisciplined frequency of the 10 MHz oscillator is 10 000000 MHz 10 Hz Although optional it is strongly recommended that this preventive maintenance be performed once every two years 13 1 1 Necessary Equipment e A digital frequency counter with 1 PPM or better accuracy and 1 Hz or better resolution be sure that the counter is calibrated e A trimmer capacitor adjustment tool non metallic screwdriver If you have a custom crystal oscillator in your unit consult the oscillator data sheet for adjustment method CAUTION Electronic equipment is sensitive to Electrostatic Discharge ESD Observe all ESD precautions and safeguards prior to calibration 13 1 2 Proc
35. nection 1 Timecode Input same as J1 BNC center 2 Timecode Input same as J1 BNC shield 3 Do Not Connect 4 Time Tag Input 5 Ground 6 Heartbeat Output 7 Ground 8 Match Output 9 1PPS Sync Input Option FXI 1PPS Sync Output Option FXO 10 13 Do Not Connect 14 1PPS Sync Input Option FXI 1PPS Sync Output Option FXO 15 1PPS Sync Output TTL Option M only Synchronized Ref Clocks O P The timecode input can be applied either to Pins 1 and 2 of P1 or to the J1 BNC connector this is the connector closest to P1 The timecode input is a differential signal i e timecode input is isolated from ground It is acceptable to connect timecode input to ground Synchronizable Timecode Generator User Manual 3 1 TPRO PC 1OA TSAT PC 104 Spectracom Corporation The IRIG B output can be taken either from Pin 9 of P1 or from the J2 BNC connector this is the connector farthest from P1 The IRIG B output is a single ended signal i e it is referenced to ground 3 5 Connector Pinout for TSAT PC104 only The GPS receiver antenna cable plugs into the 15 pin P1 connector In addition some pins may interface to the user s equipment It is the user s responsibility to modify the antenna cable connector if necessary to access the User Connection pins A description of the pinout for the supplied cable is shown in Table 3 2 Table
36. nformation about GPS ae er 1 1 Your Spectracom GPS 1 2 limp ne ee nen 1 2 Inspection and SUP DOT eur re 1 3 SPECIFICATIONS mee Ln 2 1 LOA Board anstehende 2 1 TS ATP EIU GPS Receiver OT netten tcd 2 3 INPUT OUTPUT PIN ASSIGNMENTS 3 1 Time Code Input tBNC Connector T Gies ad HM oca eire 3 1 IRIG B Output BNC Connector J 2 l a ll een ltr 3 1 Synchronized Reference Clock Output J Pianist 3 1 P1 Connector Pinout for TPRO PC104 only aan ee 3 1 P1 Connector Pinout for TSAT PC104 only l a a l a Fes reos Ret eee e inherit ee 3 2 CONFIGURATION o sr ses sssocese0 ssovoc0esss0 d sesa00ss ovesesssosodssveovssssnsdeossosssn vessen 4 1 lQ Base ae 4 1 IntermiptRentiesE aveo es on Are eek ae 4 1 External Event Time Tag Enable u u n naa rnt 4 1 INSTALLATION Me 5 1 Before Installato Nar eed acte etus to ea Dei ale 5 1 TSA PPC TOM ORI sig eier 5 2 alicui ee S ii 5 2 MEE D 5 2 Propagation Delay Adjustment ee ee anne 5 2 REGISTER ASSIGNMENTS 6 1 Data OTO NZ NON a ates o Gas Qa a sab n cat ald 6 2 16 bit Tine Tegaing ae ara 6 2 External Event Time Tagging dcs A accidisse dtc dh M fet toto uh ra 6 3 INTERRUPTS ces sosdes oeess
37. ock outputs Table 2 8 TPRO PC104 and TSAT PC104 Indicators Card edge Diagnostic Red LED AAR Flashes short long patterns for status Factory Test Green Red Yellow LED AAR Used during factory test Table 2 9 Heartbeat Output Specifications 3 8 V min at 32 mA high Output Voltage 0 4 V max at 64 mA low Wave Shape Pulse or Square Wave programmable Pulse Width 150 nS min 450 nS max Pulse Polarity Negative Square Wave 45 55 Timing Falling edge on time pulse or square wave Range Power on default rate 1 000 uS 21 845 mS in 1 uS steps 1 MHz 45 7771 Hz 100 PPS pulse Table 2 10 Synchronized Reference Clock Output Specifications JP1 3 8 V min at 32 mA high Output Voltage 0 4 V max at 64 mA low Wave Shape Pulse or Square Wave programmable Pulse Width 150 nS min 450 nS max Square Wave 45 55 Range Power on default rate 1 kHz 1 MHz 3 MHz 5 MHz 10 MHz 10 MHz Synchronizable Timecode Generator User Manual TPRO PC 1OA TSAT PC 104 Spectracom Corporation 2 2 TSAT PC104 GPS Receiver Only Table 2 11 GPS Receiver Antenna Specifications Number of Satellites 6 Acquisition Time cold start 5 minutes typical 15 min max Re acquisition Time lt 1 minute Frequency 1575 MHZ receive only L1 band C A code SPS Sync to UTC Within
38. ow window in which the Synchronizable Timecode Generator User Manual 11 1 TPRO PC 10A TSAT PC 104 Spectracom Corporation board expects it either because the 1 5 has moved or because the board s time has drifted during freewheeling Specifications of the 1PPS input are shown in Table 11 1 Table 11 1 1 PPS Input Specifications Input Voltage high 2 4 V min 16 0 V max Input Current high 500 uA max at 5 0 V 12mA max at 16 0 V Input Voltage low 0 2 V min 0 8 V max Input Current low 500 uA max Rise Fall Time 500 nS max Trigger Edge Rising 1PPS Accuracy Must be better than 100 ppm cannot be supplied from a tape playback 11 1 4 RECONN This option provides reinforced connectors for the board Both the BNC and the DB 15 connectors are glued to the board to ensure stability under stress conditions 11 1 5 TTLLAY2 Cannot Be Combined with Option M Cannot Be Installed on TSAT PC104 Compatible with IRIG B ONLY This option reports decoded IRIG B input Bits 50 through 98 in the FIFO in response to an operator command It is used in cases in which the IRIG B signal is being used for more than time of year The operator causes the most recent complete set of bits to be written into the FIFO by writing a command to the Command port base 2 The TPRO PC104 firmware responds by writing the sequence of bytes found in Table 11 2
39. ponse Ce je ie T 35 fs 3 a os os a 2 0 4 3 ie ie o mm mmm Table 8 4 COG SATS Command FIFO Data Response 102 degrees COG 10 degrees COG Ho deers COG 10 degrees cog 7 jo s nomea 8 2 Synchronizable Timecode Generator User Manual TPRO PC 1OA TSAT PC 104 Spectracom Corporation 9 Reading Dilution of Precision The Report DOPS 5B command causes the TPRO PC104 to respond by putting 10 bytes of data in the on board FIFO in the format shown in the table below The data report tells the operator for 3 orthogonal directions how much the actual satellite constellation used for tracking degrades the theoretical best GPS accuracy DOPS data is valid only for TSAT PC104 models that are tracking at least 4 satellites Table 9 1 External 1 PPS Time Synchronization Option M ho voor mungier VOOR s Nam Option M provides a 1PPS synchronization input on Pin 9 and Pin 14 of the D type connector The 1PPS input can be RS 485 differential The A signal connects to P1 Pin 9 and the B signal connects to P1 Pin 14 The 1PPS input can also be ground referenced 1PPS signal on P1 Pin 9 ground to P1 Pin 5 or Pin 7 A differential timecode input IRIG B IRIG A NASA 36 or autodetect can be applied to the B
40. pproximate operating temperature adjust R46 FRQ for zero crossover discontinuity at the transition from small to large amplitude cycles at the on time position indicator This adjustment ensures that the sine wave phase is in proper lock to the amplitude modulation signal R48 SYM adjusts sine waveform symmetry Synchronizable Timecode Generator User Manual 10 1 TPRO PC 1OA TSAT PC 104 Spectracom Corporation 10 2 Synchronizable Timecode Generator User Manual TPRO PC104 TSAT PC 104 Spectracom Corporation 11 Options and Accessories 11 1 1 HB1PPS Cannot Be Combined with Option LOR1 The heartbeat output P1 Pin 6 can be programmed as either a pulse or a square wave The specified rate must be an exact multiple of 1 000 mS The range of programmable rates is Minimum Rate lowest frequency 65 534 Seconds 0 0152593 Hz Maximum Rate highest frequency 2 mS 500 Hz Pulse Width time low pulse mode only 1 mS typical Programming Resolution li 1 mS The default rate at power up is 1Hz pulse mode Refer to Section 7 10 of this manual for detailed programming information 11 1 2 LOR1 Cannot Be Combined with Option HB1PPS This option provides the board with three different signals on a three pin header a 1 Mega Hertz Output 1MH
41. rmed by Spectracom The GPS receiver is warranted for one year from date of shipment and subject to the exceptions listed above The power adaptor if supplied is warranted for one year from date of shipment and subject to the exceptions listed above THE ANALOG CLOCKS ARE WARRANTED FOR ONE YEAR FROM DATE OF SHIPMENT AND SUBJECT TO THE EXCEPTIONS LISTED ABOVE THE TIMECODE READER GENERATORS ARE WARRANTED FOR ONE YEAR FROM DATE OF SHIPMENT AND SUBJECT TO THE EXCEPTIONS LISTED ABOVE The Rubidium oscillator if supplied is warranted for two years from date of shipment and subject to the exceptions listed above All other items and pieces of equipment not specified above including the antenna unit antenna surge suppressor and antenna preamplifier are warranted for 5 years subject to the exceptions listed above WARRANTY CLAIMS Spectracom s obligation under this warranty is limited to infactory service and repair at Spectracom s option of the product or the component thereof which is found to be defective If in Spectracom s judgment the defective condition in a Spectracom product is for a cause listed above for which Spectracom is not responsible Spectracom will make the repairs or replacement of components and charge its then current price which buyer agrees lo pay Spectracom shall not have any warranty obligations if the procedure for warranty claims is not followed Users must notify Spectracom of the claim with full
42. scharge ESD Observe all ESD precautions and safeguards when handling the timecode generator NOTE If equipment is returned to Spectracom it must be shipped in its original packing material Save all packaging material for this purpose NOTE In this manual the prefix Ox indicates that the number is in hexadecimal Base 16 format Synchronizable Timecode Generator User Manual 1 3 TPRO PC 1OA TSAT PC 104 Spectracom Corporation 1 4 Synchronizable Timecode Generator User Manual Spectracom Corporation 2 Specifications 2 1 TPRO PC104 Board Only TPRO PC104 TSAT PC 104 Table 2 1 Time Code Input Specifications Code Format autodetect IRIG A A132 IRIG B B122 NASA36 Amplitude 1 2 Vp p min 8 0 Vp p max Polarity Detected automatically Modulation Ratio 2 1 min 3 1 typical 4 1 max Input Impedance gt 10 ohms Timing Accuracy Better than 100 ppm not suitable for tape playback Common Mode Voltage Differential input 100 V max Table 2 2 IRIG B Out put Specifications Code Format IRIG B B122 Amplitude mark 2 6 Vp p type Modulation Ratio 31 Output Impedance 600 ohms Input Voltage Table 2 3 Time Tag Input Specifications 0 5V min 0 8V max for logic 0 2 0V min 45 5 max for logic 1 Tags rising edge Input Current 5 uA for logic 0 lt 5 uA for logic 1 Rise Fall Time 500 nS max
43. se mode only 150 nS min 450 nS max To specify the rate or frequency compute the divide number N as follows Note that N must be exactly divisible by 3 meaning that the specified period must be an exact multiple of 1 000 uS To specify a period for a pulse or a square wave compute N as follows ESOS T t is the period in seconds To specify a frequency for a pulse or square wave compute N as follows N z 3 106 4 e tette echter HH F is the frequency in Hertz Not all values of N are acceptable Verify that the computed value is evenly divisible by 3 and that it is in the range of 3 to 65 535 inclusive Convert N into hexadecimal base 16 notation For example if the desired output frequency is 10 kHz N 300 base 10 converted to hexadecimal notation yields N 012C base 16 Send the hexadecimal number to the card by outputting the following sequence of bytes to the command register base address 2 Note that the computed number appears in the least significant nibble of these bytes AO Bl C2 DC this loads 012C into the heartbeat counts register Finally determine whether the output should begin using the new divide number immediately forced jam or at the end of the next period no forced jam Then send the appropriate byte to the command register as follows Pulse starts at end of E5 Pulse Startsmimediately at ara
44. sedeo ess densoseesoossdosnessedeods peodssooesseess sessoseesessssenesessen 7 1 INTO UC UDI ee neon Aa ener 7 1 ORIGINS EN M ERE Rear a rer N 7 1 Seting rS 7 3 Setting P ropagation Delay COITeCHOF een 1 3 Disabling Synchronization to INput u ea 1 4 Re enabling Synchronization 7 4 Simulating Power on Reset of TPRO PC104 Firmware 7 4 Programming the MATCH Start Stop Output For Pin 8 7 4 Programming the Heartbeat Output Not Applicable to Option 1 1 5 Programming the Heartbeat Output Option H1PPS 1 6 READING GPS LATITUDE AND LONGITUPDI 8 1 READING DILUTION OF PRECISION 9 1 PREVENTIVE MAINTENANCI 10 1 Oscillator Agno Ad ran ck suu aep asqa ni 10 1 IRIG B Output Adjustment aio nee 10 1 Synchronizable Timecode Generator User Manual TPRO PC104 TSAT PC 104 Spectracom Corporation 11 11 1 1 11 1 2 11 1 3 11 1 4 11 1 5 11 2 11 2 1 11 2 2 11 2 3 11 2 4 12 12 1 12 2 12 3 12 4 12 5 1
45. sferred to the host as a sequence of 10 bytes through a byte wide hardware FIFO Inputs to the TPRO PC104 are modulated timecode or GPS receiver signals for TSAT PC104 host commands not usually needed and external event pulses as required for the application Outputs are modulated IRIG B timecode and a heartbeat pulse rate that can be specified by the user program The TPRO PC104 can generate interrupts to the host system as enabled and selected by the host system Interrupt sources include the heartbeat external event data FIFO not empty and start or stop time match The clock automatically synchronizes to specified timecode signals Status bits advise the host of synchronization status If there is no synchronization source the TPRO PC104 starts counting at 000 days 00 seconds at power on The clock time can be set by operator commands 1 1 General Information about GPS NOTE GPS applies only to the TSAT PC104 board the TPRO PC104 is not equipped for GPS The United States government operates a set of approximately 32 satellites collectively known as the GPS Constellation or GPS Satellites Each satellite has an internal atomic clock and transmits a signal specifying the time and satellite position On the ground the GPS receiver determines its position longitude latitude and elevation and the time by decoding the signals simultaneously from at least four of the GPS satellites The satellite orbits are circular incline
46. sults in a logic 0 low to that particular bit of base address For example the standard factory base address configuration is This means that address bits 8 and 9 should be set to 1 and address bits 11 10 7 6 5 and 4 should be set to 0 So the standard factory configuration has switch SW1 bits 8 7 4 3 2 and 1 set to the OFF or logic 0 position and switch SW1 bits 5 and 6 are set to the ON logic 1 position 4 2 Interrupt Request Level Configured by switch SW2 4 bit DIP switch on bottom side assembly User selected interrupt request level can be configured via Table 4 1 below The factory configured level is IRQ10 Table 4 1 IRQ Selection SW2 IRQ Bit2 2 3 OFF OFF OFF ON 4 OFF OFF ON OFF 5 6 7 OFF OFF ON ON OFF ON OFF OFF OFF ON OFF ON 10 OFF ON ON OFF 11 OFF ON ON ON 12 ON OFF OFF OFF 13 ON OFF OFF ON 14 ON OFF ON OFF 4 3 External Event Time Tag Enable The operator can disable external events by jumpering JP6 Pin 2 3 unless there is a source of external event pulses connected to P1 Pin 4 To enable external events jumper JP6 Pin 1 2 Synchronizable Timecode Generator User Manual 4 1 TPRO PC 1OA TSAT PC 104 42 Spectracom Corporation Synchronizable Timecode Generator User Manual TPRO PC 1OA TSAT PC 104 Spectra
47. upt Enable Enable 4 HEARTBEAT Flag 1 Clear flag 0 change 3 MATCH Flag 1 Clear flag 0 change 2 In sync Flag SE 1 Time Code Input Decodable Flag 0 FIFO Empty Flag 2 7 0 n u Command Port 3 7 0 Hu as external event any data Im a n u n u 7 0 n u Assert Microcomputer Reset 8 Time Days n u A D Time hours and minutes n u WORD C 15 0 Time seconds amp 100s 10s of WORD milliseconds E maa Time 10 us 10 us n u Synchronizable Timecode Generator User Manual TPRO PC 104 TSAT PC 104 Spectracom Corporation 6 1 Data Organization able 6 2 Data Organization Base Address Offset 8 able 6 3 16 bit Word Data Organization Base Address Offset A 3 o able 6 4 Data Organization Base Address Offset C able 6 5 Data Organization Base Address Offset E 6 2 16 bit Time Tagging To measure the instantaneous time a program first performs a word 1 O read from the low order 16 bit time register at Base Address E When the low order register is read the 3 high order time words are stored concurrently in an internal register in the TPRO PC104 They will be stored until the low order time register is read again So whenever the high order registers are read the time that is returned is the time at which the low order register was last read 6 2 Synchronizable Timecode Generator User Manual TPRO PC 104 TSAT PC 104 Spectracom Corporation 6 3 External Event
48. vide register 302 98 8 to divide register least significant nibble 302 e6 command E6 for pulse with forced jam g quits the Debug program Example 2 Output an 8 kHz square wave Begin outputting at the end of the next heartbeat period Compute N 3 10 8 10 375 base 10 Convert 375 to hexadecimal Thus 375 base 10 becomes 177 base 16 Send the command sequence AO B1 C7 D7 E7 to the command register at base address 2 Use the DOS Debug program to test the heartbeat output as follows C gt debug 302 a0 0 to divide register most significant nibble 302 bl 1 to divide register 302 7 7 to divide register 302 d7 7 to divide register least significant nibble 302 e7 command E7 for square wave with no forced jam q quits the Debug program The examples above assume that the board s base address jumpers are set to 300 default The Debug program comes with DOS it is not supplied by KSI Debug commands consist of the letter 0 space I O address space and the byte to be output 7 10 Programming the Heartbeat Output Option HIPPS Only The heartbeat output P1 Pin 6 can be programmed to be either a pulse or a square wave The specified rate must be an exact multiple of 1 000 mS The range of programmable rates is Minimum Rate lowest frequency 65 534 Seconds 0 0152593 Hz Maximum Rate highest frequ
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