Kinemetrics 468-DC-MRS Operating And Service Manual Download Page 103

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Summary of Contents for 468-DC-MRS

Page 1: ...SERVICE MANUAL MODEL 468 DC MRS Satellite Synchronized Clock 0 i i 7 l l _j _ I _j l I J j NB TIME KINEMETRICS TRUETIME 3243 SANTA ROSA AVE SANTA ROSA CA 95407 707 528 1230 TELEX 176687 FAX 707 527 6...

Page 2: ...KINEMETRICS References in this manual to 468 DC A 468MS A 468RK KINEMETRICS I TRUETIME 3243 Santa Rosa Ave Santa Rosa CA 95407 May be replaced by 468 DC MM A 468MS RK MM 2 A 468RK MM 2 11...

Page 3: ...re still available to us Those resources are no longer available Producing MK I antennas at this point in time would entail an ex tremely prohibitive expense for Martin Marietta The MK II GOES antenna...

Page 4: ...mbly 1 5 foot length Cable Assembly 20 Foot length RG 214 with N Connectors N Bulkhead Connector Paint Code 17925 for Item 2 White Paint Code 17925 for Item 4 White WARRANTY INFORMATION The Kinemetric...

Page 5: ...APPENDIX A PAGE DESCRIPTION 1 468 DC MM 2 A 468MS MM 3 A 468RK MM 4 A 468BP MM...

Page 6: ...T 22 TYP MODEL 468 DC MM GOES SATELLITE CLOCK 10 00 MAX...

Page 7: ...TO A 468RK MM 2 REMOlE KIT N CONNECTOR Annc 1 _ A QU DLt lt At A IVIVLJLL I IVUIVl J l I 1v11v1 GOES ANTENNA WITH MOUNTING HARDWARE...

Page 8: ...TO 468 DC MM aNc CONNECTOR FROM A 468MS RK MM 2 N CONNECTOR MODEL A 468RK MM 2 REMOTE KIT...

Page 9: ...LT ADAPTER 7 rCOUNTERSUNK HOLES PLATE FOR ATTACHMENT TO VAN HOLE PATTERN TO MATCH OLD REMOTE KIT FITS 10 32 FLATHEAD SCREWS 10 00 I I 1 00 0 75 _ 13 00 4 NOTE DRAWING NOT TO SCALE MATERIAL 1 8 PLATE A...

Page 10: ...MATIC MANUAL SATELLITE SELECTION PROPAGATION DELAY 1 Hz 1 KHz IRIG B REMOTE DISPLAY DRIVING OUTPUT SLOW CODE C u vu 11 EXTERNAL OSCILLATOR Option IRIG H Opt ion PARALLEL BCD TIME OUTPUT Option RS 232...

Page 11: ...OF OPERATION ACTIVE ANTENNA ASSEMBLY 86 170 PRE AMPLIFIER lST L O MUL NPLIER MIXER INTERMEDIATE FREQUENCY AMPLIFIER DETECTOR BOARD ASSEMBLY 86 73 ANALOG BOARD ASSEMBLY 86 74 RF LOCK DETECTOR RF LOCK L...

Page 12: ...L DESIGNATION REFERENCE 86 173 SCHEMATIC ASSEMBLY 86 173 PARTS LOCATION ASSEMBLY 86 73 SYMBOL DESIGNATION REFERENCE 8r 1 SCHEMATIC ASSEMBLY 86 73 PARTS LOCATION ASSEMBLY 86 74 SCHEMATIC ASSEMBL 96 74...

Page 13: ...ASSEMBLY 141 170 6 33 6 46 PARTS LIST 141 170 6 33 6 47 MODEL A 468HX SUB ASSEMBLY 141 171 6 34 6 48 PARTS LIST 141 171 6 34 6 49 MODEL A 468HX FINAL ASSEMBLY 142 171 6 34 6 50 PARTS LIST 142 171 ASS...

Page 14: ...through the proper time zone offset selected by the rear panel thumbwheel switches The Model 468 DC is shipped to display the time of year in the twenty four hour format By simply removing the cover...

Page 15: ...150 180 150 120 900 o o EAST WEST IN ORBIT SPARE LOCATED AT 105 W FIGURE 1 1 GOES SATELLITE COVERAGE MAP 1 2...

Page 16: ...placed at our op tion at no charge to the customer and returned freight pre paid Our obligation under this warranty is limited to servicing or adjust ment of any instrument returned Items not covered...

Page 17: ...1 1 5 ms of UTC NBS Time when cor rected for propagation delay through on board switches and using the A 468MS Antenna 2 The time difference between neigh boring clocks locked to the same satellite is...

Page 18: ...on time and remain high for 2 seconds for minute mark 4 seconds for hour mark and 6 seconds for day mark Capable of sourcing 40 MA at 4 0 volts minimum and pulled to ground by a lk ohm resistor See SE...

Page 19: ...e of year is outputted in EIA Standard RS 232C configuration via a Motorola ACIA Output format is D D D H H M M S S and an indicator of the time quality CR LF Baud Rate and ACIA opt ions are dip switc...

Page 20: ...9 hardware available 7 1 4 lbs 3 5kg Ship Wt 12 lbs 5 4kg 96 135VAC 60 400Hz less than 25 volt amps Others available on request When ordered the standard AC input is replaced with binding posts on 3 4...

Page 21: ...17 00 15 00 17 00 FIGURE 1 2 MODEL 468 DC DIMENSIONS 1 8...

Page 22: ...ver to select either receivable satellite in the case of poor or no reception from one The automatic mode can be used only if a common pointing direction will allow the antenna to receive signals from...

Page 23: ...I 80 80 0 70 70 0 pj 60 60 t zj 50 50 1 40 40 z 30 30 t i t zj z 20 20 z w 10 10 w l l J Cl Cl 0 i 1 4 0 0 z I 1 J c 10 10 t 4 _J J z 0 O 20 z 30 30 0 t 4 40 40 1 11 50 50 60 60 lO 70 80 80 AZ H 90 9...

Page 24: ...60 40 20 0 90 _ _ mi A Z TH A Z H _ llliilp S O 80 70 60 50 40 30 20 10 20 30 40 50 60 70 80 AZ TH dO 70 to 40 30 10 Lu C J 0 1 l 1 5 30 AZ H 90 _ _ _ _ _ 11111111 i i _ _ _ _ 90 100 120 140 160 E 18...

Page 25: ...on 2 11 When the power is turned on the initial indication of proper operation of the Model 468 DC is the colons on the display The colons will blink off and on at about once per second This indicate...

Page 26: ...empt wi 11 be mad e to oper ate the unit with the antenna inside a building or without determining the proper antenna pointing angle This as often as not results in inability to lock to the satellite...

Page 27: ...nds If during the course of opera tion phase lock with the satellite is lost long enough for the R F Circuits to sweep for phase lock about 150 seconds this light will go out When phase lock is regain...

Page 28: ...120 140 160 E 180 W 160 140 120 100 80 60 40 20 0 20 40 90 90 50 20 10 w Cl 0 I l l fll 4f t 1 1o 3 20 50 90 1111111111 90 100 120 140 160 E 180 W 160 140 120 100 80 60 40 20 0 20 40 LONGITUDE FIGURE...

Page 29: ...E 100 120 140 160 E 180 W 160 JL40 120 100 80 bO 40 0 20 40 90 i _ l 90 80 60 50 40 10 40 10 LaJ 0 0 I 40 50 60 90 l 90 100 120 140 160 E 180 W 160 140 120 100 80 60 40 20 0 20 40 LONGITUDE FIGURE 3 2...

Page 30: ...information should phase lock with the satellite be lost When the unit has accumulated loss of lock for 13 9 hours since the last synchro nization to Sms the colons will flash The flashing colons indi...

Page 31: ...the WEST satellite or can be set manually for lock to either s atellite The receiver as shipped from the factory is set for Automatic scanning of the satellites If it is desired to lock the receiver...

Page 32: ...d n BY UNLOCK 1NDICATOR RED LED 100B z UNLOCK 1NDICATOlt RED LED kJ TERNAL osc1LLATOR ftl ICATOll GlU 1 ll lE1 nuc TTL AH sll J J CT JIJMPI 11 pR Ol AGATION DELAY EAST SATELLITE SELECT sw1TCR WEST SAT...

Page 33: ...ed by the use of the attached maps FIGURES 3 1 and 3 2 If the clock is locked to the EAST or WEST satellite as described in SECTION III entitled AUTOMATIC MANUAL SATELLITE SELECTION the delay can be d...

Page 34: ...me Code Genera tors or direct recording on magnetic tape 3 32 The modulated 1 KHz format is a sine wave driven by two sections of a Texas Instrument Part Number TL084 in series with 50 ohm located on...

Page 35: ...ohm pull up to SVDC This will drive 2 TTL loads When wired in this man ner the output on the rear panel BNC will be normally high On the minute it will go low 2 seconds 4 s econds on the hour and 6 s...

Page 36: ...nizes the presence of his External Oscillator If the LED is not lit the unit does not recognize the input signal and further investigation will be necessary for proper operation of this option 3 50 Wh...

Page 37: ...57 All of the 42 BCD lines are driven by 74HC244 s and are capable of driving fifteen LSTTL equivalent loads These 1 ines are high to indicate a l in that position in the BCD code The high capacity ve...

Page 38: ...l s of O s of mins 42 B s of 10 s of M sec 10 B s of units of days 27 B s of minutes 43 4 s of lO s of M sec 11 4 s of units of days 28 4 s of minutes 44 2 s of lO s of M sec 12 2 s of units of days 2...

Page 39: ...D4049B and is capable of driving two TTL loads or multiple CMOS loads The 1 KHz output can provide information to the user in two formats The first format is as shipped from the factory The second out...

Page 40: ...Y r 100 SEC I I 5 SEC COUNT UPDATING I I MIN I l _______1 0mSEC SECOND FORMAT FIELD INSTALLABLE OPTION 5 SEC TYPICAL NOT TO SCALE 5 SEC MIN FIGURE 3 5 MILLISECOND COUNTER TIMING DIAGRAM I kHz SIGNAL S...

Page 41: ...Standard RS 232C as described for a data terminal Thus the rear panel connector is a Cannon DBP 25PAA or equivalent Messages are sent and received using ASCII coded characters in most standard data r...

Page 42: ...FIGURE 3 6 PARTS LOCATION PARALLEL BCD OUTPUT OPTION 3 16...

Page 43: ...FIGURE 3 7 PARTS LOCATION RS 232C OUTPUT OPTION 3 17...

Page 44: ...W Washington D C 20006 This reference is suggested for any user of this system as it is the industry accepted standard for this interface system 3 73 With the RS 232 output option several modes of ope...

Page 45: ...he time as of 9 bits after the center of the start bit of the received T character is saved in a buffer It is then immediately outputted in the current format No further data is outputted on the RS 23...

Page 46: ...ood by the clock s time system Be certain not to use an M as the unit will see this as a mode change command to Mode M The format can be selected within the limits of the maximum format described belo...

Page 47: ...3 91 When one inputs the string for the alarm time all the delimiters must be included for place holding An X in any po s i t ion ma ke s tha t d ig i t a don t c ar e d ig i t I f a L ine Feed is pl...

Page 48: ...internal sychronization with the data rate This is also true when the baud rate is changed in the R and C modes 3 97 NOTES 3 22 1 CTRL A CR and LF are the ASCII characters 01 OD and QA in hexadecimal...

Page 49: ...of ASCII control characters E and S These new modes function in the following manner MODE U DUT1 MODE When the Model 468 DC receives a U over the RS 232 interface the response will be the current cor...

Page 50: ...ty character over the RS 232 link to set to 110 and the front panel display is modified on 468 DC the two satellite indicator LEDS are alternately illuminated 3 109 An attempt to set the clock after N...

Page 51: ...tiate a reset of the RS 232 These are after the questions DO YOU REALLY WANT TO PRESET THE TI ME AUT0 MAT IC N B S SYNC and IS THE TI ME PM The user must first respond to the quest ion and then may en...

Page 52: ...c a 11 i ng t he DC S 0 PE RAT 0R a t 3 0 1 7 63 8 3 51 and g iv i ng t he platform PRIMARY ADDRESS and asking to have this platform placed in the Test Mode This also can be done directly by computer...

Page 53: ...address of the platform desired 3 SHIFT This prepares the terminal to send an upper case of the next key stroke 4 CR This carriage return enters into the Model 468 DC the eight digits keyed into the t...

Page 54: ...triggered to respond by the field technician 2 Next the Wallops Command and Data Acquisition Station will receive your message measure the signal strength frequency modulation index and modulation qua...

Page 55: ...set the Model 468 DC to once again look for the DAMS HEALTH MESSAGE for his platform This can be done by one key stroke Y This wili re_set previously set platform address into the Model 468 DC to agai...

Page 56: ...EEE 488 OUTPUT Option INTRODUCTION 3 136 The IEEE 488 output option is available on the Model 468 DC to provide the user with a communication port via the IEEE 488 bus This option is compatible electr...

Page 57: ...ever a string is input to the unit a Line Feed or EOI will terminate the string and no action is taken on that string until this termination is received Input strings are stored in a 32 character buff...

Page 58: ...be printing only the fractional part of the second followed by a carriage return and line feed If the format string is terminated short of the 17 characters the positions in the time string after the...

Page 59: ...e the pr ev i o us 1 y pr ogr am med time in the M mode After transmitting the complete time string the model 468 DC returns to M mode 3 158 MODE P 3 159 Whenthe unit is placed in the P mode the curre...

Page 60: ...return line feed This format being day of year hours minutes seconds millisec onds and time quality character This is 19 characters incuding the carriage return and line feed 3 163 Q is the time quali...

Page 61: ...ith the Model 468 DC on the bus seem to have been in specifying the clock s address and in properly handling the terminating sequence of CR LF which the clock needs and supplies 1 HP 9825A Program u i...

Page 62: ...n the bus Sets clock for1at to omit delimiters TD flaa instructs clock to catch time 40 INPUT 5 A Reads time from clock 50 PRHH A Displavs time 4 SYSTRON DONNER 3520 Program PROGRAM TO READ TRUE TIME...

Page 63: ...ion and adjustment of all clocks in the order group to provide the user with 50 microsecond timing correlation between clocks when several operating condi tions are met 3 172 The conditions necessary...

Page 64: ...ET on the rear panel set to O this change in the time code will not affect your displayed or output time This will allow these users to continue to function in UTC which is unaffected by the DST laws...

Page 65: ...llites East West and Spare 3 Positive identification of the satellite whose signal is being received 4 Reduced timing error when switching satellites 1 millisecond or less 5 Improved internal time bas...

Page 66: ...E DETECTOR I t 0 0 d t T n T0 T9 5 0 1 i lD o en FINE _ PHASE r DETECTOR r E DATA J_ T0 L F TRACK _J_ 100 Hz LOCK SIGNAL DATA 1 MHz COARSE osc 10 MHz FINE osc T4 5 T5 5 10 5 MHz 100 Hz T9 S t F C TS 5...

Page 67: ...DELAY SWITCHES 10 1 0 0 1 10 ___ 1 0 0 1 10 1 0 0 1 1 M Hz 4 7 4 7 7 4L 7 7 4 L 4L I 7 4_L_ 77 4 7 41 7 4 L 7 7 7 100 MUX 1 3 3 HUX 4 L 2 7 y 1 PULSE SELECT IRIG MODULATOR 10 10 41 7 41 PULSE SHAPER l...

Page 68: ...re accurate than allowing the integrator to drift to one of the supply voltage rails The time quality flags are set for an error rate of approximately three milliseconds per hour This is much worse th...

Page 69: ...ts the correct 0 1 micro second switch to the select circuit The select circuit picks one of the ten outputs from the divide by ten circuit to reset the three dividers shown This causes a phase shift...

Page 70: ...LLITE TO SITE 20 0 L O L 2 J 0 FO F S 250 REM CALCULATE SWITCH SETTING PRINT 260 T4 100 C310000 T3 T1 1000 6 5 T t l N T T q 68 PF INT PRINT 269 PF I NT 27 4 F Flt T it IITCH SETTINb T4 1 MILLif3EC ON...

Page 71: ...eau of Standards for their controlled information 1 SECOND 1 2 SECOND l t 1 2 SECOND _ _ 4 1 2 SECOND 46 BITS 4 BITS 46 BITS 46 BI NOAA NBS NOAA CONTROL CONTROL CONTROL CON I I FIGURE 4 1 GOES TRANSMI...

Page 72: ...ASSY 86 73 ASSY 86 74 EXT OSC I ICOAX OPTION I I L _______J PANEL DISPLAY ASSY 86 43 OR ASSY 86 100 POWER SUPPLY ASSY 86 52 OR ASSY 86 53 MICRO PROCESSOR BOARD ASSEMBLY 86 42 OPTIONS AS ORDERED ASSY 8...

Page 73: ...ODEL A 468MS 4 7 The 4 5 MHz output of the active antenna comes down the coax to the detector board Assembly 86 73 where it is trans lated to baseband using the third local oscillator in conjunction w...

Page 74: ...sync to data at turn on while the fine loop serves for precise sync once coarse sync is obtained One or the other of these PLL 1 s is always operating under processor control Whichever data PLL is se...

Page 75: ...ASE a 11 i DATA ___ DATA DETECTOR MUX FINE LO PASS FILTER DETECTOR DATA LOCK DETECTOR _ _ DATA LOCK N I SEEK TRACK N I LOCK FREEZE DATA UNLOCK LED FINE ___ _______ PROCESSOR CLOCK Ivcxo i MUX i DIVIDE...

Page 76: ...ard is controlled by the digital board It contains multiplexed planar gas discharge displays and their drivers providing an easily visible visual display of the time 4 15 The output options also contr...

Page 77: ...of Q5 thus closing the ALC loop 4 26 NTERMED _E REQU PL IF IER 4 27 The 21 4 MHz signal from the mixer passes first through Q2 acting as a buffer and is then applied to a 13 KHz wide monolithic quartz...

Page 78: ...phase signal from U3 on the detector board is converted to a single ended signal by UlS pins 12 13 and 14 It can be examined at TP2 Typically this point is at 2 4V when locked to a satellite Reliable...

Page 79: ...pins 1 2 3 This causes Ull pin 8 to go high forcing current into the summing node through R25 This much larger current than that through R31 rapidly drives Ull pin 7 negative The reset ends when the...

Page 80: ...pos it ive 1ast For the second half of each data bit time the inverted Manchester data from U28 pin 1 is applied to the data integrator input Thus for a 1 the input is always positive while for an O a...

Page 81: ...samp1e to C32 wh i 1e i f the output is negative then data l U26 pins 6 8 9 directs the sample to C31 Thus C31 accumulates the average final value of the data integrator output for l s and C32 for O...

Page 82: ...ve in towards zero eventually causing an out of lock condition to be indicated if the signal becomes too poor for reliable decoding See FIGURE 4 10 FIGURE 4 10 POOR SIGNAL 4 51 If no antenna is connec...

Page 83: ...e with incoming data the output of U28 pin 14 is a triangle wave for a l the wave form starts out in a positive direction Then at mid bit it turns back negative going just reaching zero at the end of...

Page 84: ...f U4 pin 8 and runs at 1 MHz 2 When the coarse oscillator is selected by the processor Tt provides all the timing for the analog board and for program execution on the processor board Selection is con...

Page 85: ...be applied to the input of the fine PLL low pass filter through U6 pins 1 2 13 and U3 pins 10 11 12 Opening this switch enables the processor to open the loop and freeze the data clock oscillator fre...

Page 86: ...and R64 from SV OV levels to 2 5V levels which drive Ul9 Ul9 provides a further division by 10 and provides timing for gener ation of a stepwise approximation of the 1 KHz sinewave carrier using Rl07...

Page 87: ...c of dis play board assembly The display board provides a visual display controlled by the processor The display is multiplexed by pairs of digits A given pair is selected by the processor via Ql QlO...

Page 88: ...l Environmental Satellite Service GOES Data Collection System It allows users concerned with Data Collection Platform performance to check the quality of the uplink transmissions under actual operatin...

Page 89: ...Ull 7 into a low state each cycle of the regulator s output Ull is re triggerable and the period of R36 and Cl8 is sufficiently long that while US oscillates the starting clock is continually inhibit...

Page 90: ...vision between synchronization to the time code and decoding the time Each level of sync is contingent on the preceed ing levels A series of state diagrams attempts to describe these levels See FIGURE...

Page 91: ...1 STATE 2 RF LOCK SIGNAL TENTATIVE RF LOCK SWEEP STOPPED DAMPING HIGH I AFTER 15 SECONDS OF RF LOCK STATE 3 AFTER 10 M SEC STATE 5 TRY OTHER SATELLIT TOGGLE EAST WEST CONTROL LINE NO RF LOCK FOR_____...

Page 92: ...tate 3 to state 1 prevents lock to unmodulated carriers State 4 facilitates RF lock after a short burst of interference FIGURE 4 18 4 22 AFTER RF LOCK STATE 3 NORMAL OPERATION STATE 0 SEEK DATA LOCK T...

Page 93: ...2 LOSS OF MLS SYNC INDEPENDENT OPERATION TIME OUTPUTS VALID POSSIBLE DRIFT FLAGGED OUTPUT TIME ISOLATED FROM SATELLITE TIME STATE 3 MLS RECOGNIZED R ESYNC TIME OUTPUTS VALID DRIFT FLAGGED SECONDS DOW...

Page 94: ...10 1010 SffOO 0101 0101 0101 0101 0101 0101 0101 0101 0101 J r r r 1 r r 1 l 2 3 4 5 6 7 8 9 05 0 I 1010 0101 1240 1248 r 1 10 TS UM 31 4 15 BITS I I _1 06 0 07 0 08 0 09 0 10 0 I I I I I 1111 1240 12...

Page 95: ...s caused the timebase to drift out of the acquisition range of the fine data phase detector 4 114 In state 0 at turn on output time commences from zero indicating elapsed time but is not displayed on...

Page 96: ...west LED 4 118 A blinking LED indicates time lock without a legal longitude The most common cause of this condition is reception of the back up satellite at 105 degrees west during problems with one o...

Page 97: ...L O peaking a tunable coil on Assembly 86 74 Tl 5 4 THIRD I F TRIM ASSEMBLY 86 73 5 5 The sweep generator and the scope are needed for this adjustment which sets the third intermediate frequency to th...

Page 98: ...y 86 74 for 0 0 2V This adjustment also affects receiver delay up to 100 microseconds 2 2M TO TP3 _____ VV J 11 TO VOLTMETER J 3 3 F FIGURE 5 2 LOW PASS FILTER 5 10 EAST SWEEP TRIM ASSEMBLY 86 74 5 11...

Page 99: ...ILLATOR PEAKING ASSEMBLY 86 74 5 19 If a spectrum analyzer covering 18 40 MHz with 50 Ohm AC coupled input is available see two sections below 5 20 Connect the spectrum analyzer to the antenna input B...

Page 100: ...acquisition Try the east 5 27 When the clock is first turned on the colons should blink on one second off one second etc If they don t the program is probably not running Take the cover off Check that...

Page 101: ...V1 I V1 12V MND OF R48 SINK OF Ul 8V END OF R4 6V Ul PIN 11 FIGURE 5 4 VOLTAGE TEST POINT LOCATIONS MODEL 468 DC...

Page 102: ...ne rubber seal around the edge of the plastic bubble pry off the bubble and take the flat plate antenna off the metal box too You should be looking at the 86 170 board 5 38 If the green LED is lit and...

Page 103: ...by observing the base of Q3 You should see a peaked response at 18 64 MHz with a bandwidth 6 db points of approx 1 MHz Next look successively at the emitter current test points for the multiplier stag...

Page 104: ...ate TTL levels at half frequency If 0500 lights but the clock doesn t appear to lock to the external oscillator when the antenna is pulled check for drift between the waveforms at U7 pin 3 10 KHz and...

Page 105: ...SECTION VI SCHEMATICS AND PARTS LIST MODEL 468 DC 6 1...

Page 106: ...6 1 PARTS LOCATION ASSEMBLY 86 170 6 2...

Page 107: ..._ 4 C 7 z frl r 1 0 4 1 7 1 0 4C i 70 5 c1 LO IVW N 2euc rs i 1r is s c1 s14o i 11 1 s INSTil L C AT i A PACI 4Nt 6 Jtllf 41 S AV D Clfl tll AA A PS 4 rT i tV G 1f N 1 MS t 5 Y4W Tt 1 71 1 llfA E 11...

Page 108: ...fot nolithic 1 OpF C27 36 50 Cap i nolithic 470pF CRl 57 50B2 2BOO Diode Sch H P 50B2 2800 2 C2B 36 10 Cap i nolithic lOpF CR2 NJT USED C l C29 36 29 Cap i nolithic 6BpF CR3 35 B Diode Varicap 2112 C...

Page 109: ...T0 72 3N211 RS5 02 121 Resistor lOOK Q9 175 211 Transistor t U FET T0 72 3N211 RS6 02 145 Resistor IM QlO 175 211 Transistor MOSFET T0 72 3N211 RS7 02 49 Resistor 100 ohns Qll 175 211 Transi stor t U...

Page 110: ...1 342 3 342 3 342 3 381 lA 381 lA 85 170 175 901 Cap Monolithic lOOpF Cap Monolithic 470pF Cap Monolithic lOOpF Cap Monolithic lOOpF Cap Monolithic 220pF Filter Hex 468 MHz Filter Hex 468 MHz Filter H...

Page 111: ...I J L_ _ __ _J 6 6 SCHEMATIC ASSEMBLY 86 173...

Page 112: ...or 47K R9 2 79 Resistor 1 8K 387 12 Flexstrip Jumper 12 Pin RlO 2 69 Resistor 680 ohm Rll 2 69 Resistor 6SO ohm 43 2 Coil Assembly 42 40 Rl2 2 106 Resistor 24K 43 2 Coil Assembly 42 40 Rl3 2 106 Resis...

Page 113: ...cs i SV T r r SV f5V I ce 8 R9 A 11 Tg 1 e 1 1 ll il C 1 I SY TP 5V I I I 4 7K 8K 80 A 12 A 8 I A 7 P 6 f 7K r 471 II 8 2 8 IZ 4 5 1 I I I I R2S I 2 IK 6 v I RZI e 21 f 5Y I 1f2 9 I I AIPS23 19 7 IL...

Page 114: ...6 10 PARTS LOCATION ASSEMBLY 86 74 6 10 w iir v_ _ l t...

Page 115: ...I f _ 1 5 _ V B PN E 6 11 SCHEMATIC ASSEMBLY 86 74 I i l f C 4 f1 1 ff I r j Q O I...

Page 116: ...5 Cap Monolithic luF R2 2 153 Resistor 2 2M C503 36 58 Cap Monolithic OOluF R3 2 145 Resistor 1 0M C504 36 95 Cap Monolithic luF R4 2 107 Resistor 27K csos 33 20 Cap Cer Var 4 20pF RS 2 123 Resistor 1...

Page 117: ...USED R66 2 121 Res stor lOOK Rll2 Selected in test Ul8 176 4Sll8 I C 4Sl8 R67 2 121 Res stor lOOK Rl13 2 169 Resistor lOM Ul9 l 76 40Jl7 I C 4017 R68 2 121 Res stor lOOK Rll4 2 1S6 Resistor 3 0M U20...

Page 118: ...ocket 24 Pin Dip Socket 2S Pin Dip NOT USED Socket 12 Pin 31S l 2 Socket 12 Pin 31B 12 Jumper 3B7 7 Digital PCB FAB Transistor MPS3702 Transistor 2N3904 Transistor 2N3904 Transistor 2N3904 Transistor...

Page 119: ...r lOO 4 V OA f i D C _ECT l C J Jli 7 ii JI MoPe 1 1 i cx h Ao 6 _ 4 B OC I V ODEL 0 DC Pi JA iol l D l lrcol 4z LOC IP 1 A LOC K t O L OC i I 0 Ja v l 1 1 I 0 i J t llr I L iiil l I J i Z J t i l l...

Page 120: ...onolithic O luF QlS 175 3904 Transistor 2N3904 R26 2 145 Resistor IM R27 2 145 Resistor lM CRl S5 S386 Diode Zener 1NS386 NOTE ALL RESISTORS 1 4 WATT S CARBON R28 2 109 Resistor 33K COMP UNLESS OTHERW...

Page 121: ...6 18 SCHEMATIC ASSEMBLY 86 43...

Page 122: ...121 8 S I P lOOK R2 11 121 8 S I P lOOK R3 11 121 8 S I P lOOK R4 11 121 8 S I P lOOK RS 11 121 8 S I P lOOK fi R6 11 121 8 S I P lOOK R7 2 97 Resistor lCX R8 2 97 Resistor HM R9 2 109 Resistor 33K i...

Page 123: ...1 11 I l e T l 44 I IRIG r 10 SMINS HOURS DAYS MINS IO HOURS Z 6 21 SGHEMATIC ASSEMBLY 86 44 IO S SEC SECONDS 37 j I I I JJJ 1T 1 11 1 THIW 1001 ll llnlol llrt o I ftF p i IC JP H L A IJ 50 if IJOT t...

Page 124: ...40 Pin Male Flexstrip Jumper 6 Cond 387 6 Jumper Jumper PCB RS232 Output NOTE All resistors are 1 4 Watt S Carbon Comp unless otherwise noted Rl R2 Rl3 Rl4 RlS Rl6 Rl 7 Rl8 Rl9 R20 R21 R22 R23 SI S2...

Page 125: ...I N 6 24 SCHEMATIC ASSEMBLY 86 46 J 7 GDY A K J I I fl 19 lJ R ft Z7 7 1 1...

Page 126: ...olithic luF Cap Monolithic luF Diode 1NS231 Header 24 Pin Male NOT USED Conn 40 Pin Female NOT USED NOT USED Conn 40 Pin Male Jumper Jumper 1 2 IEEE 4B8 Time Output PCB Fab Transistor 2N3904 All resis...

Page 127: ...1 lJ fsY r A7N _ L IJ 1 __ _ t _ i i TQ nil 19 J L 11 P Y 4 1 r 1 I1 tl II Al PAC ___lU____ 4 1 __J L 1 NR __J_zj_____ 1 1 1 1 L 1 I 126 1 h 5 I JV 1 If I Piie 11 VRP 8488 SY 2e 7 1 3 87 g 39 AZ OA I...

Page 128: ...N400S 08 S7 400S Diode 1N400S 09 57 4005 Diode 1N400S DlO S7 400S Diode 1N400S Dll S7 400S Diode 1N400S 012 57 400S Diode 1N400S Dl3 S7 400S Diode 1N400S Jl 318 2S Socket 7 Pin Strip 318 7 J2 318 25 S...

Page 129: ...Ob 11 IRl J DI IN40o tJOIEc U L e C1THG R Mt1 aE 1F1e r llJ U4 7912 SV us 79L05 RS IOK t JC __ 1 I ia I l V IHE 1 2 2 o Jf i L _So Hz l P K 1F1et U Ss PtaJ2 T lo 4 B 1i 1 PLA e OF PAE 4 Foi 6 30 SCHE...

Page 130: ...82 R9 2 133 Resistor 33 l RlO 2 47 Resistor r 82 ohn Rll 2 49 Resistor 100 Ohii Rl2 2 143 Resistor 82 Rl3 2 133 Resistor 33 R14 2 125 Resistor lSOK Rl5 2 141 Resistor 68 Rl6 2 97 Resistor 1 Rl7 NJr US...

Page 131: ..._ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ __ __ __ _ __ _ __ __ _ __ __ __ __ __ _ ____H__ A L j f r J1 c 1 J1 4 r DL J1 0 1 1 D i J1 1 ___JL _l_________________________________ _____li_ J1 z 11 jq Vl f le l t...

Page 132: ...p l OuF Tant Cap 22uF Tant Cap 400uF SOV Alum Electro Cap 400uF 50V Alum Electro Cap 4700uF 25V Alum Electro Cap 20uF 200V Alum Electro Cap O luF Monolithic Cap OluF Polystyrene Cap 22uF Tant Cap 470p...

Page 133: ...lOK Resistor 15K Resistor 3 3K Pot 5 0K Cermet Resistro 0 1 ohm 3W WW Carbon Resistor 33 ohm Resistor 22 ohm Resistor 1 0K 1 8 W 1 Film Resistor 1 0K 1 8 W 1 Film Resistor 4 7K Resistor 100 ohm 1 2 W...

Page 134: ...v0C J2 i 12V DC r re 3 C IJD UtJLE l NOTED I ALL C APA C ITO VALUES AeE I V 1C 12C l RA 2 ALL IZE TOlC VALUE A EE 4W OMM 3 L OAt 1 0 o U G t OU JD P2 IM 2 Y PO Jt2 6G nuND 1 r CHA IS GJZOt JD Ill PISI...

Page 135: ...2 240 6 2 277 6 253 6 282 1 73 16 289 1 268 6 2 241 6 5 DESCRIPTION Sub Chass is Spacer P W Board 1 4 Long Screw 6 32 X 1 4 Long FHMS Screw 6 32 x 1 4 Long PHMS Spacer P C B Support 3 8 Lg Washer 6 Fl...

Page 136: ...r 4 Int Teeth Nut 4 40 Hex Rubber Feet Screw 4 40 111 i Lg PHMS Kepnut 16 NOT USED Chassis Shim Shoulder Washer 14 Insulator 11 a HOT USED NOT USED Spacer tr 40 l 4 Lg l c 2764 U5 lnstall1td 86 42 Scr...

Page 137: ...ex 5 16 18 x l Lg 4 9 254 312 Lock washer 5 16 Split 4 10 252 312 Hex Nut 5 16 18 4 II 400 2 Label Product Warranty NOT SHOWN l 12 400 1 Label Product I D NOT SHOWN l 13 285 1 Sealant Silicone A R 6 4...

Page 138: ...ket Screw 5 16 18 x 3 4 Lg HHMS NOT USED Kepnut 5 16 18 End Cap Plastic 6 49 PARTS LIST 142 171 ltlMEHETRICS TRUETIME PART NUMBER 141 171 141 170 138 171 227 17 141 173 336 1 0 339 6 2 383 3 251 312 2...

Page 139: ...J I J1 6 51 A 468 ANTENNA SYSTEMS...

Page 140: ...rect antenna pointing angle This section provides information as to the physical size and mounting dimensions I I I MODEL A 468MS 7 5 The Model 468 DC Synchronized Clock is normally shipped with the M...

Page 141: ...FIGURE 7 1 MODEL A 468MS AND MODEL A 468 MS RK DIMENSIONS 5 00 I 50TYP HOLE PATTERN FIGURE 7 2 BASE ANTENNA MOUNTING DIMENSIONS 7 2...

Page 142: ...ten n a in the b a s e to proper or1entat1on for satellite reception stall the remaining bolt through the Shaft Pivot bracket as well as the two bolts in base to secure the Shaft Tighten all bolts th...

Page 143: ...se in the selected site The dimensions for this base are provided in FIGURE 7 2 3 Remove the shaft and antenna electronics package from the shipping crate Slip the round end of this shaft into the bas...

Page 144: ...NOISE THIS WILL INTERFERE WITH THE GOES SIGNAL AND DEGRADE THE UNIT PERFORMANCE Tighten the two pivot bracket bolts just installed FIGURE 7 3 MODEL A 468HX ANTENNA DIMENSIONS 7 5...

Page 145: ...e housing for the temperature sensitive components in the antenna This in 1 ine housing can be up to 25 feet from the A 468 when using the supplied cable The 25 foot cable supplied with this option sh...

Page 146: ...FIGURE 7 4 MODEL A 468RK AND MODEL 468 RKC DIMENSIONS 75 TYP ir 11 5 _ ____ _ _r 1 o TYP r _ _1 _ t 1 1 4 0 i I 4 o I 1 1 1 34 D 6 HOLES FIGURE 7 5 A 468RK AND A 468RKC MOUNTING DIMENSIONS 7 7...

Page 147: ...a Model 468 RKC is ordered the following items are supplied 1 Antenna electronics housing Model A 468RKC 2 50 ft lead in coax RG 58 U 7 24 The input conn ec tor for the A 468RKC i s an N con nector t...

Page 148: ...e helix or through the microstrip the signal goes out through the connector labeled FROM ANTENNA through the short coax and into the unlabeled N connector If the jumper is disconnected from the un 1ab...

Page 149: ...ent the output must be in Universal Coordinated Time UTC and not converted to 12 hour basis or local time zone as is the capability of this instrument The same is of course true of the IRIG H output 8...

Page 150: ...binary sequence 8 9 When the IRIG B from the Model 468 DC is in the ampli tude modulated 1 KHz format the sine wave carrier frequency is synchronized to have a positive going axis crossing coincident...

Page 151: ...TA 2MS BINARY O TYPICAL 60 1 SEC INDEX MARK ER TIME FRAME 1 SECOND 20 30 40 INDEX COUNT 0 01 SECONDS HOURS DAY 1248 1020 1 2 4 8 10 4080 100 200 P211 11 SMS l NARY 1 TYPICAL 70 80 90 TIME OF DAY STRAI...

Page 152: ...30 INDEX COUNT l SEC 0 5 SEC kBINARY l TYPICAL _ o Time at this point equals 173 days 21 hours 24 minutes 57 seconds G _L T T 3 3X X TYPICAL MODULATED CARRIER Recommended Frequency 100 Hz or 1000 Hz F...

Page 153: ...forward to Kinemetr ics TrueTime Failure Mode is D Constant Intermittent D Describe Problem Symptoms NAME COMPANY STREET CITY STATE ZIP PHONE NO FOLLOW UP INFORMATION EXCHANGE MODEL S N OPTIONS Pleas...

Page 154: ...43 Santa Rosa Ave Santa Rosa CA 95407 KINEMETRICS TRUETIME 3243 Santa Rosa Ave Santa Rosa CA 95407 KINEMETRICS I TRUETIME 3243 Santa Rosa Ave Santa Rosa CA 95407 KINEMETRICS I TRUETIME 3243 Santa Rosa...

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Kinemetrics 468-DC-MRS, Operating And Service Manual

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