SYSTRON DONNER 6250A, Instruction Manual

Page 1: ...TELECOf1 1 AUSTRALIA RESEJ RCH LAPDRATORIES APPARATUS HISTORY SHEET RL 9878 COUNTER Frequency 1 i me Systron Dormer Type 6250A S N 20005 Accessories 1 Power Cord...

Page 2: ...Corporation SVSTRDN E 111111111 DONNER CORPORATION Printed in U S A L OIU INSTRUCTION MANUAL MODEL 6250A COUNTER TIMER SERIAL NO CONCORD INSTRUMENT DIVISION 10 Systron Drive Concord California 94518...

Page 3: ...B 0 e NE N H TE ON A OPE ON MAINTE IN...

Page 4: ...SS501 Al Mother Board Assembly 45586 4 1 A2 Readout Assembly 4S586 7 l A2 Readout Schematic 053S7201 A3 A Amplifier Assembly 7 05357201 A3 A Amplifier Schematic 05358401 A4 B Amplifier Assembly 7 0S3S...

Page 5: ...ntroduction 0 9 1 LIST OF FIGURES Figure 3 1 Front Panel 3 3 3 2 Rear Panel 3 3 3 3 Gating Ambiguity 3 6 3 4 Triggering Levels 0 3 6 3 5 Spurious Counts Due to Noise Transients 3 7 3 6 Missing Counts...

Page 6: ...0A Counter Timer sal counter which features the im a highly readable seven se leading zero blanking is lable four bit parallel group on a rear panel connector In counter may be powered by an internal...

Page 7: ...tiple average to fill register Selection of multi le period aver age from 10 1 to 10 periods Counts 10 MHz s with autopositioned decimal point 0001 ms to 9999999 9 ms Manual 0001 ms to 1 ms Independen...

Page 8: ...BLE 1 SPECIF ATION C nt d Line Vol External GENERAL Trigger Registration Display storage Sensitivity S wave input Input impedance Attenuation input without damage Power 3 N f 6250A 6 74 7 0 ms 9 II l...

Page 9: ...ime base tempera ture stability to 1 part in 10 6 from 0 to 50 C Time base rate 3 parts 10 9 per day 1 part 10 8 from 0 to Time base per day from 0 to Time base per day from 0 to 50 C Rear panel BCD c...

Page 10: ...DUC IN The and the 2 2 REC 2 5 6 6250A E the cond damage and recei shipping car shipment of controls your nearest COUNTER UNTIL INSTRUCT ser a summary on all sides ional movement of INSTRUi ft i ENT t...

Page 11: ...same protection trument operates from either 0 115 200 or 230 V at 50 to and consumes approximately 19 W of Taps on the primary power transformer are provided to accommodate these power line Use a 0 5...

Page 12: ...and 3 2 Information covering factor a step by step operating included 3 2 FRONT PANEL FUNCTIONS Table 3 1 descr s the control front panel of the instrument number location Index 1 2 3 TABLE 3 1 Name...

Page 13: ...3 BLE 3 1 F ndex Name 5 TIM A B 6 PERIOD B 7 RATIO A B 8 TOTAL A 9 RESET 10 11 2 13 14 15 16 INPUT A 20 Hz 50 MHz 1 Mrl SLOPE ATTEN LEVEL ATTEN 0 se B se on...

Page 14: ...I I I l l 16 17 18 19 20 21 15 14 2 3 4 5 6 7 FIGURE 3 1 FRONT PANEL 8 7 6 5 4 f y ET IA fT 2 FIGURE 3 2 REAR PANEL 22 23 13 12 8 9 10 11 3 6250A 6 74 3 3...

Page 15: ...s when gate is f eight digit readout measurement data with 5 uni ts kHz Does not is depre mode TIM A B the uni ts ms and lit 23 s LED mode 3 3 REAR PANEL FUNCTIONS The following table describes panel...

Page 16: ...l MHz frequency standard having at least an order of magnitude higher stability Deviation of the oscillator from this frequency then becomes a func tion of several factors the most significant being...

Page 17: ...t 3 6 ect to an irreduc of the display not coherent gate of the input during se error due to ss significant percentage of of pulses selected time gating of UTP L TP REF _ __ __ v TRIGGERING LEVELS no...

Page 18: ...ass filter between signal source and instrument input POSSIBLE SOLUTION a Adjust LEVEL control for trig gering on steepest portion of slope Modulated signal must be of sufficient amplitude to cross th...

Page 19: ...erent a factor of ten increases limit of the oscillator accuracy base when measuring a 100 to 1 part in 10 3 or 0 1 For measurement is used for greater accura one complete cycle of measures the time o...

Page 20: ...T SIGNAL PEAK NOISE t MAXIMUM POSSIBLE ERROR io __ z lo 1 1 1 J I FIGURE 3 9 PERIOD AND TIM TRIGGERING 1o 1 100 Hz 1 kHz 10 kHz 100 kHz 1 MHz l 0 MHz ERROR CAUSED BY SIGNAL NOISE MEASURED FREQUENCY fs...

Page 21: ...ch if using internal or external de source options 06 or 07 Depress the TIM A B switch and the MAN switch Depress RESET each time MAN switch is depressed 3 Position the A ATTEN switch to XlO or XlOO t...

Page 22: ...he ratio of input divided by B input use the procedure the LINE switch or BATT switch is using internal or de source options 06 or 07 ss the AUTO switch for automatically selected resolution successiv...

Page 23: ...4 On the rear panel HOLD to inhibit switch to INT for an EXT standardo 5 Connect a signal 6 Depress the TOTAL stop totalizing 7 Read the proper 3 12 on NORM or to EXT for connector to 50A 6...

Page 24: ...18 415 676 5000 910 481 9479 SYSTRONDONNER Specify both model and complete serial number in all correspondence 4 2 TEST EQUIPMENT Test equipment recorr ended maintaininq nnd listed in Equivalent test...

Page 25: ...50 require has been the in connecting j l U LOJ A con at 25 MHz at a by repeti indication 6250A 6 74...

Page 26: ...SLOPE LEVEL SLOPE LEVEL INT EXT rear panel HOLD NORM rear panel SS SS SS 1 just as required 1 Adjust as required INT NORM 2 Connect the pulse generator to the A input and B input con nectors Adjus a...

Page 27: ...h an amplitude As INT 3 Observe an of 1 000 racy 4 Depress the MAN switch the period multipl period multiplier ed Observe 10 5 Depress the MAN frequency input the proper l 5 4 4 4 Ratio Test 1 Set the...

Page 28: ...0000 generator accuracy 5 Repetitively depress the MAN to cycle the through all multiples 10 1 10 2 10 3 10 4 10 5 All readings are generator dial accuracy Multiple splay 10 1 50 0 4 5 ROUTINE MAINTEN...

Page 29: ...onents with e circuits may i e should not be soldered installa lessens the possi wave damage caused by 250A 6 74...

Page 30: ...5 7 A o mv us n 6250A circuit traces Hz to a on the 20 Hz to MH 1 0 s 4 7...

Page 31: ...3 Decrease rms i AUTO PERIOD B Connect l BNC connectore ust s us nt A l s 50A...

Page 32: ...suring functions through the function select logic The resolution switches select a time base reference signalo combined condition of the two switches determine the proper point placement and measurem...

Page 33: ...FIGURE 5 1 FUNCT 0 L 1 re For s re to same manner on connecto connect re are 7 053630 GATE GATE CONTROL AND RESET GENERATOR OCK DIAG 5 3 ther B rd S hematic 7 05 55501 The solution se logic off depen...

Page 34: ......

Page 35: ...opes location This infor 0 U23 U26 U34 and U6 which provide information is applied B switches 19 22 25 28 33 and devices U36 is speed decade U38 decimal point are set to l n and the is accom U9 and de...

Page 36: ......

Page 37: ...u u 1 u 3 __________ 12 U4 1 R 2 T MIN...

Page 38: ..._J _j _J RETIMING PULSE GEN OUT B U48 9 u48 1 U48 13 START STOP PU LS E U42 3 STEP PULSE U55 6 START INHIBIT U46 9 _ _ STOP ENABLE n J I START n_ Lrf SHIFT rr 102 _____111 _ _ s _______n s ______fl_ u...

Page 39: ...are contained in this chapter These are arranged with the Test Assembly Rear Panel and Wiring inter connect schematic followed by the A numbered boards arranged in Alpha numeric order The parts list i...

Page 40: ...N TEMGNOT PROVIDED 3 5 S REF 3iC 90 CCVER Fl JSE COl NECTl l J wrrn SHRINK i J61NG DRESS IR ANS OR IA ER PRIMARY LEADS ACR JS S TR NSFCRM R LCNG SIDE t CR CONNECTION TC MOTHER BD 0 0 9 on 1 I lJ n I...

Page 41: ...ITEM 2 PLACE 12 B5 BENDT T E r lNf BUTT EACH RE IAIN PANEL To PL Jc 8VTTON E l WITH b FASI TEM0 6 4 FAS TEl JW TI 1T MS I ESE LEA bS i OTTOM F oM N FORMER o Rr GRAY c GRAY RED RED BLUE BLUE YELLOW BL...

Page 42: ...OTl IER BOARD 20 H SOMHz IM a JIO ASS 1 Y 05355501 SCHEMATIC 7 0S3SSSOI IPRESET I o INPUT B TRIGGER LEVEL 20Hi MH IM 0 l Hi I I 0 ms I u 0 S OFF Q SCALE I I LI c c GATE 0 I J I _ LI AZ READOUT Ass1 Y...

Page 43: ...1 e u L _________ __ SY B P o SI sv 4E 5 P o v 4 43 44 10 MHZ 9 8 s U 1 IV Ck 11 IZV 10 371 ClSl 40l 4Zl C4 ll e 1 1 9v C4 r 500 vl 15 3 P o USS UJ I I 0 A I I I I ls nl P oSI a 14 9 P o iJS8 II 13 2...

Page 44: ...va 5Nl5S3 I 4 7 U43 S 7 ION 14 U 3 Ni 281A 14 7 Uio St U 4ZN 16 e U 4 Gt 74 00N 14 V45 SN7400N 14 VII N t 74N 14 7 IJ46 MC_ _OOIP 14 Ul Z SN Se30 1 4 7 U 7 S i 7400N 14 Ul3 L Z 8 St 4 7 J tN 14 7 U 4...

Page 45: ...0 0 r ll Oc O 0 0 0 0 0 0 L _ _o _o _o _o__ _J 0 I U45 I C32 0 0 0 0 201 FARSIDE 6 8 AR51DE 0 0 Al MOTHER BOARD ASSEMBLY 05355501 REV A 6250A 6 74...

Page 46: ...330K 330 R20 5G iOK A2 READOUT SCHEMATIC 45586 7 1 REV B 9 8 9 e 9 R l R 2 330K 330 15 14 1 180v iSOv PN4ffi9 TYP R 3 4 11 II R24 R 2 Rc i 210 11 270 n _ 210 ti I CR 2 CR3 Gt iE KHc _ J 15 m 9 10 8 L...

Page 47: ...CL R2 161 C2 C27 C36 I OS I 05 T 05 N07 S UNLESS OiHE RWISc SPl Clf 0 RcS S TORS ARE IN OllMS 1 4 W S 0 to 2 CAPAC TOR VALUES MORE TllAN ONE NpF leSS pf A3 A AMPLIFIER SCHEMATIC 7 05357201 REV A A sv...

Page 48: ...I NOTES UNLESS OTNERWISE SP CIFIELJ t RESISTORS AR IN 01 MS l 4W 5 2 lf iC TORS wu ur s MOh f THAN ONE II I LE SS I I A4 B AMPLIFIER SCHEMATIC 7 05358401 REV A SV 18K P8 FARSIDE 2 12 3 VIEW A A A4 B A...

Page 49: ...C3 YI 150 f I ll 411i 4 1 Nor C4 00 RESISTORS 4 W S o 2 CAPAC TO VALUES IN pF A5 10 MHz OSCILLATOR SCHEMATIC 45608 7 1 REV A Q3 2N4275 6 12 A5 10 MHz OSCILLATOR ASSEMBLY 45608 4 1 REV A 6250A 6 74...

Page 50: ...7 1 in f o A 2 NUFA 250A R E N E s 15 i 5...

Page 51: ...fman Ave Hauppauge Component Div New York 11787 Corp 1400 Upfield Dr Carrollton Texas 75006 Systron Donner Corp 10 Systron Dr Concord Calif 94518 Electronic Co North Adams Mass 0 47 Mfg Inc Technologi...

Page 52: ...E 7 1 CODE TO NAME CROSS REFERENCE Cont 1 d CODE ME ADDRESS 99392 STM 290 Chapman St Oakland Calif 94601 99515 Marshall Industries 1960 Walker Ave Monrovia Calif Capacitor Division 91016 I 6250A 6 74...

Page 53: ...TICLE BNC RF FUSE Post 3AG FUSE 3AGMB COVER Plate Connector TRANSFORMER Power TRANSFORMER End Bell CONNECTOR Power male 3 l f R S CODI 52542 52542 52542 52542 52542 52542 52542 52542 52542 52542 52542...

Page 54: ...04713 lN4005 100413 10 6250A 7 5...

Page 55: ...01600 1 R6 w 01121 CB9125 101573 J R7 RS 01121 CB1035 101570 l R9 Oll 21 CB3325 101559 1 RlO 01121 CB4735 101574 4 Rll Rl2 Rl3 Rl4 w 01121 CB4715 101625 4 Rl5 w 01121 CB5635 101670 l Rl6 1 4 w 01121 C...

Page 56: ...20 Same as Ul5 U21 INTEGRATED CIRCUIT Quad 2 input AND 04713 MC3001P 025740 4 gates TTL I U22 Same as Ul3 U23 Same as Ul5 U25 Same as U21 U25 Same as Ul3 U26 Same as Ul5 U27 Same as Ul5 U28 Same as U1...

Page 57: ...ounter Time Base programmable MOS US8 Same as U9 U59 Same as U4 U60 Same as U32 U61 INTEGRATED CIRCUIT Quad 2 input EXCL OR gates TTL U62 Same as U32 U63 Same s Ul5 U64 INTEGRATED CIRCUIT Quad 2 input...

Page 58: ...02 07 Same as Ql 08 Same as 02 Q9 Same as Ql QlO Same as Q2 Qll Same as Ql Ql2 Same as Q2 Ql3 Same as Ql Ql4 Same as Q2 Ql5 Same as Ql Ql6 Same as Q2 Rl RESISTOR Comp 1 k 5 1 4 w 01121 CB1025 101569...

Page 59: ...6 R30 Same R26 R3l Same R32 Same R33 Sarne as RS R34 Same as R3 Same R4 R36 Same RS R37 Same RlS Same Rl9 R39 Same as R3 Same Same RS R42 Same as R26 Same R26 Same Same as R26 R46 Same as Same as Same...

Page 60: ...28 Same as ClO CAPACITOR Tant 330 F 6 v C29 Same as C25 C30 Same as Cl9 C31 Same as C2 C32 CAPACITOR Dip Mica 47 pF 500 v C33 Same as ClO C34 Same as C28 C35 Same as C25 C36 Same as ClO ClOl CAPACITOR...

Page 61: ...l 4 w 1 4 l 4 w w w w 1 4 w w switch k MFR S CODE 02735 07263 04713 01121 01121 01121 01121 80294 01121 01121 01121 01121 01121 01121 01121 80294 01121 01121 01121 01121 01121 01121 01121 01121 52542...

Page 62: ...3 100122 4 Cll Same as C2 Cl2 Not Used Cl3 Not Used Not Used Cl5 Not Used Cl6 Not Used Cl7 Not Used Cl8 Not Used Cl9 Not Used C20 Sarne as Cl C21 Same as ClO C22 Same as ClO C23 CAPJ CI TOR Disc 1 lJF...

Page 63: ...s R24 R27 Same as R24 R28 Same as R8 R29 R30 R3l R32 R33 R34 R35 Rl02 S9 Rl04 S4 SS Ul VRl RESISTOR Comp 620 0 S 1 4 W Same as R25 RESISTOR Comp 510 0 Si 1 4 W RESISTOR Comp 6 8 k l 4 w RESISTOR Comp...

Page 64: ...TOR Dip Mica 100 pF 500 v 72136 DM15FD101JO 10017301 l cs CAPACITOR Dip Mica 220 pF 500 v 72136 DM15FD221JO 10022001 1 C6 CAPACITOR Dip Mica 33 pF 500 v 72136 DM15ED330JO 10017501 l C7 CAPACITOR Dip M...

Page 65: ...CH TER 8 p 8 l I NT DUCT N 6250A 6 7 assembly schematic available with the in a pack ly schem the 8 1 8 2 blank...

Page 66: ...ma ic 7 05317501 Power Inverter Assembly With Option 06 talled the POWER the instrument connected to the Option 06 or Option 07 the OFF position battery charging provided through Q8 Q2 and associated...

Page 67: ...RE MG llE E Xl TIN LbEN C ONNt T IONS FR oM 38 RED 3 1 BLI LE AVE S Hlt Lb AT C Nb z C iNrH C T Rl D TO 34 BLK TO 3 3 IN TALL 22 G llJN PE 5 FROM 38 To 3 4 PlC 1 S MRIOIC E Ot LOGIC 60 FAR SIDE OF B6A...

Page 68: ...hine 6 32 x 5 16 Washer 6 Flat Washer 6 Split Lock Washer 4 Split Lock Not Used Not Used Not Used Assembly Power Inverter Not Used Heatsink Right Not Used Not Used Transistor 2N5193 Transistor 2N5193...

Page 69: ...OPT 06 0PT 07 4 Q a u 0 J UJ v ow U VI er J Q lL 1l 0 LO M LO 0 it z 0 1 1 j 0 0 _ co E LLJ Ul Ul c I c z 1 1 LL 053523 053512 3 74...

Page 70: ...6 32 Washer 6 Split Lock Washer 6 Flat Not Used Not Used Not Used Transistor 2N5193 Transistor 2N5193 Transistor 2N5193 Not Used Not Used Not Used Screw Pan Head Machine 4 40 x 5 16 Not Used Heatsink...

Page 71: ...OP 0 3523 053512 7 74 u w 0 I I r LO 0 o i E w V 0 w w z 1 4 0 w 0...

Page 72: ...I I I I 1 1 Ii I i lfiJ 6 0PT 07 u i LO w c u...

Page 73: ...LIST w SE LY 05 50 OPT 0 SD No 5 5 2 Qty 3 4 53512 7 74...

Page 74: ...l4 k 101601 2 k 102298 2 1769 2 Rl7 w 1018 85 Rl w 101570 Rl9 w 101570 st 5 w 101560 5 w 101570 Res k 101570 Res 101885 Res 101601 Resistor 102298 Resistor 101769 Res 101885 Power Inv 04562261 1 00 04...

Page 75: ...11 Temperature variation Aging rate After 24 hour shutdown Short term stability lity than the Ul 3 MHz osc i o C 10 9 over to 50 reach 6 x 1 0 rms 1 Voltage stability 5 x 0 10 SPECIFICATIONS OPTION 1...

Page 76: ...r to the crystal oven through the 24 V de regulator Ul The 3 MHz output is fed through amplifier Ql to U2 dual AND OR gate The output of U2 6 is applied to U3 3 as a clock signal U3 is a dual D flip f...

Page 77: ...0 O I w w 0 0 OSC ll LAiOR PC AS r MIC H P L TABULi ITION 2 SO II PL0458490 I 0 2 SO l Z PL0458490 2 i d T j ST P GZ 50 1 Pl 04584902 KOOK VP OR OVf Nl llR O C L ASSEMBLY 045849 REV A...

Page 78: ...OPT 11 12 13 CHASSIS ASSEMBLY 045619 REV A OPT 11 12 13 4 6250A 6 74...

Page 79: ...ASSEMBLY SCHEMATIC ASSEMBLY Chassis OSCILLATOR High Stability B4 MOUNTING B Oscillator Bracket Ill DELETE ASSEMBLY 10 MHz Oscillator COVER Plate 3 MFR S CODE 4 MANUFACTURER S PART NUMBER 52542 045628...

Page 80: ...0 0 0 0 0 0 0 8 C4 0 0 0 u U2 g 0 0 0 0 0 OP 11 12 3 OS LLATOR OPTION ASSEMBLY 04561801 REV B OPT 1 1 6 6250A 6 74...

Page 81: ...T ON SHOWN 4 5 8 19 QlJ 3 Q 11 ic 1 llJ 747 N OPT 11 12 13 OSCILL UI i v 3Ml t O C 1 L TOI 5V ________ ___ Sv NOT 1 UNLES OTKERWl t SPECIFIED Al l RE 1 TOR AR E 1 l W 5 o C4 Lui OR OPTION SCHEMATIC 7...

Page 82: ...UIT Dual 2 w AND OR inverter TTL INTEGRATED CIRCUIT Dual D flip flop TTL INTEGRATED CIRCUIT Quad 2 input EXCL OR qatea TTL INTEGRATED CIRCUIT Dual VC Multivibrator TTL INTEGRATED CIRCUIT Decade Counte...

Page 83: ...PUT and B INPUT s REPLACEABLE PARTS LIST EQUIPMENT ASSEMBLY DESIGNATION OPTION 32 FI 1 2j 3 4 DESIGNATOR COMPONENT NOMENCLATURE AND DESCRIPTION MFR S MANUFACTURER S ITEM REF CODE PART NUMBER RECEPTICL...

Page 84: ...TION WOT l WAIL 8LE F Oflf OMIT WITl I DC OP Bl tATIOtJ O Tlo 1 coPT AI 0 9 F o r 0 0 0 0 SOLOll R SHll LD A l IO T A S POf 1 1 TlttM OFI l ICCllH1 8 eA Alb1 1 00P Cl fTt CONDVC TOR 01 IR 0 s e PO T T...

Page 85: ...up serial arallel 8 4 2 l format including deci p Amphenol connector pin connections C R UIT DESCRIP ION BCD CONVE CH T C 7 0 5603 1 The interlaced mul AND gates blanking gate unit 11 tor signal is De...

Page 86: ...Bl OP R EL D CONNECTIONS 0 UN N ION BC N 1 It 1 1 3 2 4 8 5 1 4 8 1 4 4 8 5 25 47 3 0...

Page 87: ...4 16 916 4 J 940 15 915 33 95 1 1 514 J8 338 1 3 913 37 937 12 912 36 936 j j 1 911 J5 9 35 10 910 34 934 9 90C 3 9J3 i 8 9C8 32 9 2 0 7 9Q 7 31 5 3 8 6 906 20 330 S 3CS 2 3 93 0 4 904 28 328 0 I903 2...

Page 88: ...6250A 6 4...

Page 89: ...m N J 1 0 m I J 0 I U1 J 1 10 p c H 10 10 5 DP MU TiJfil 4Ti6i c 4560 V B...

Page 90: ...SISTOR Comp l k 5 1 4 W Same Rl RESISTOR Comp 4 7 k l 4 w INTEGRATED CIRCUIT Quad 2 input AND DTL INTEGRATED CIRCUIT Quad 2 input NOR gates DTL Same U2 IN rE iRJ TE D CIRCUIT Quad Tri State TTL 3 HFR...

Page 91: ...0 J II H c s M 0 v 6 50A ACCESSORY 1...

Page 92: ...MOY c o f S li EP CE G Af Ol V7 AC it r WIS SNOW V z R IE MOVe 2 INNE 61 HA MOLES Jo1N U Jl TS IOGE IE tlt AS S MO N I A El CE Cit V AS S i U Y W T I n 11 SNdWAI DUA CK M UN SS y 7 2 3 EV A so y 6250...

Page 93: ...ck Mount HANDLE PANEL Rack Mount PANEL Rack Mount Adapter DELETE End HANDLE Foot DUAL RACK MOUNT ASSEMBLY ADD COVER Mount HANDLE 3 1 52542 4 MANUFACTURER S PART NUMBER 045476 2 039953 2 033570 3 04506...

Page 94: ...added parts plus a list of deleted items The supplemental pages for assembly will be identified with the words SUPPLEMENTAL INFORMATION lowed by the identification of the changed assembly For the Mot...