Datapulse 101 User Manual Download

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Summary of Contents for 101

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Page 3: ...decade selector switch and a fill in vernier control for either single or double pulse operation Effective repetition rates to 20 MHz may be set up in the double pulse mode by proper positioning of th...

Page 4: ...utputs are also gated l 6 2 Asynchronous Gating In this mode the time delay circuit is disabled while the repetition rate generator operates continuously Both the main pulse output and the reference t...

Page 5: ...ntinuously variable by means of a six position decade switch and a fill in vernier control over a range of 30 nanoseconds to 10 milliseconds The maximum duty cycle is at least 70 percent 1 11 MAIN PUL...

Page 6: ...e polarity by means of the Type 2302 Pulse Mixer available as an accessory Opposite polarity outputs may be resistor mixed with a resultant loss of amplitude 1 18 OPERATING TEMPERATURE The instrument...

Page 7: ...nterference of the output being us ed 1 21 4 Type 2101 lnverting Transformer This transformer is used to invert the positive trigger output ad vanced or reference for test applications requiring a neg...

Page 8: ...ting signal enables the pulse outputcircuitry beginning with the first advanced trigger after the gate is applied and continuing until the gate is removed The reference trigger output is available dur...

Page 9: ...voltage There are six repetition rate ranges in decade steps The instru ment will be set to the repetition rate indicated by the selector knob position when the vernier knob is fully clockwise The EXT...

Page 10: ...on internally triggered operations only and occurs approximately 10 percent of the pulse period before the reference trigger The REFERENCE trigger occurs approximately 30 nanoseconds after the unit is...

Page 11: ...tions 2 3 OPERATING PROCEDURE 2 3 1 Equipment or equivalent Required a Tektronix Model 661 Sampling Oscilloscope b Tektronix Model 543 Real Time Scope with CA Plug in Unit c Datapulse Model 101 Pulse...

Page 12: ...ITIVE AMPLITUDE control counterclockwise and note that the amplitude decreases without any noticeable effect on waveshape down to 2 volts Return the AMPLITUDE to the 10V position f Disconnect the load...

Page 13: ...with its vernier fully clockwise Turn the AMPLITUDE to a convenient setting and switch the POWER ON Press the SINGLE PULSE button and verify that one pulse only appears on the oscilloscope each time...

Page 14: ...the PULSE DELAY selector to O 1 us and its vernier fully counterclockwise Switch the PULSE WIDTH selector to l 0 uS with its vernier fully clockwise Set the PULSE MODE switch to SGL and the POSITIVE...

Page 15: ...scope and synchronize the oscillo scope to the REFERENCE TRIGGER OUTPUT of the unit under test Set the oscilloscope sweep to Z uS cm and the amplitude of the upper trace to ZV cm Set the REPETITION RA...

Page 16: ...the line trigger positions A pushbutton trips the trigger multivibrator directly for one cycle of output when the repetition rate switch selects single pulse operation The main output will be continu...

Page 17: ...In the double pulse mode the width multivibrator is turned on twice during each cycle by the two trigger pulses The first pulse occurs approx imately 30 nanoseconds after the reference trigger output...

Page 18: ...o mun 7 0 an 11 um I 50 01 5 10 SIN 5L PULSE non raw RANSV ORHIR szcm mnv _ mr 412v GATE EJ 9 9 nvaon OVIIL MD War 0 a on mum 0 M 34 AND DELAY M V a zo a n _ 6 an 10 ml mam M v 6 13 0 M DWI pawns 25...

Page 19: ...because of the low impedance of CR3 It will again become regen eratively unstable and Q4 will be cut off when the timing capacitor discharges through CR3 starting the cycle over again The collector of...

Page 20: ...fast step is applied to DB which serves as an output pulse shaper for the trigger multivibrator Q8 is biased by resistors R54 R55 and R57 in the on state with enough current for high band width opera...

Page 21: ...th the beginning and the end of the delay period These two requirements are met by connecting opposite ends of two windings of the pulse transformer and applying the resulting pulse waveforms through...

Page 22: ...establilh ground at any desired point on the incoming waveform Either a noninverted output from 06 or the inverted phase from 05 is applied to the trigger multivibrator depending on which collector is...

Page 23: ...through a variable attenuator network which provides output amplitude control The emitter current of 015 is taken by the grounded base stage Q17 to the negative pulse driver 018 018 is turned on and...

Page 24: ...rear corner of the circuit board The voltage should be between 105 volts and 125 volts Check the following dc voltages for the indicated tolerances the voltage points are marked on the top of the circ...

Page 25: ...EPETITION RATE vernier fully counterclockwise and note that the frequency goes down to less than 0 1 MHz If it does not recheck the adjustment setting from the previous step NOTE If it is not possible...

Page 26: ...e REPETITION RATE vernier fully counterclockwise and note that the frequency goes down to less than 1 0 MHz 4 1 4 Pulse Dela Circuit a Monitor both the P06 OUTPUT and the REFERENCE TRIGGER OUTPUT usin...

Page 27: ...counterclockwise with its selector set to 0 l KHz Verify a 10 millisecond delay Set the PULSE DELAY and PULSE WIDTH selectors to 0 l p S and the REPETITION RATE selector to 1 0 MHz with all verniers...

Page 28: ...he PULSE WIDTH selector to l 0 M5 the REPETITION RATE selector to 0 1 KHz and both verniers fully clockwise Verify a pulse width of 1 0 milliseconds Switch the PULSE WIDTH selector to 10 MS with its v...

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Page 30: ...riggered operations only It occurs approximately 10 percent of the repetition rate period before the reference trigger 1 7 2 Reference Trigger The reference trigger has an amplitude of 2 0 volts from...

Page 31: ...Time Change and fall time is less than seven nanoseconds to and fall time is 7 nanosec typ I 10 nanosec max Manual 3 Change min pu15e width spec Para 1 10 from 3 nsec to 35 nsec 2 Z 7 4 1 5 Para 1 13...

Page 32: ...R112 and 135 fromlk 1 4w 5 P N 10010 102 to 1 5k 1 4w 5 PIN 10010 152 2 Add C113 and 136 82 pF 500v 5 P N 11013 820 3 Add CR115 and 135 Diode 1N995 P N 12144 003 4 Add CR113 114 133 134 Diode DP16 0 P...

Page 33: ...itudes greater than Pg 1 4 1 15 2V To i at amplitudes greater than 3V Pg 2 5 Change to 2 volts To to Para 2 3 3e 3 volts 2235 3 23 67 J4000O 154C Schematic Change C134 82 pF capacitor to C136 L M37000...

Page 34: ...with R2 1k 1 4W resistor IS ickema hb 9048 H 949 7 6 g jqoooc L I ckok 0m ORi C HSK K 0 Le Co on ep Rode Swwivm 3 GOEQQB IL 7 E blm37000 43d 3 Cha qe 0 mm Q Q DF 30V loch Pm Sn 835 5 OuF 9 Va 0 PM ISM...

Page 35: ...1 1N4002 1 DATAPULSE DATAPULSE COMMERCIAL DP19 6 22194 006 1N207l Transistors DP43 0 22435 000 2N984 DP46 0 22465 000 2N964A DP46 l 22465 001 None DP59 O 22595 000 2N1132A DP60 0 22605 000 2N2411 DP60...

Page 36: ...nels provided 1 reod lor single pulse 2 tor double pulse 5350 00 1on v 12mm separately Simultaneous 1 sgl or dbl pulse 40n5 5 ls 25n5 5ms variable 10ns lms 12v inlo 509 3950 00 103 loll 10MH2 D Ems 25...

Page 37: ...annel 3 True and EOMDlEmEM data output llxed nulpu selectanle word independent word variable amplitude and level l2 volts lrom 50 ohms 2150 llizeiMllz iengtns tor sync types sync common lower level lr...

Page 38: ...n shall disclose to our satisfaction to have been thus defective Instruments returned under this Warranty will not be ac cepted at the Datapulse plant without prior authorization by a Datapulse repres...

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