Datapulse 101 Operation & Maintenance Handbook
Reklama
Reklama
SECTION 1
SPECIFICATIONS l. 1 GENERAL INFORMATION
The Datapulse Model 101 is an unusually compact high performance and low cost pulse generator.
Unique circuit design utilizing a minimum of advanced solid state components, sets new standards for pulse generator reliability and economy and extends versatility.
The instrument is designed for a wide spectrum of pulse testing, circuit development and general laboratory applications.
Its capabilities include simultaneous positive and negative variable amplitude outputs; single or double pulse operation; internal or external triggering; synchronous or asynchronous gating; and internal or external sine wave triggering.
Each of the two outputs deliver 2 watts into 50 ohm loads.
All operating controls and test connectors are on the front panel except the 115-230 line voltage selector switch which is on the back.
1.2
REPETITION RATE
The repetition rate is continuously variable from 10 Hz to 10 MHz by means of a six step 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 the second pulse.
1. 3 EXTERNAL TRIGGER
Reliable triggering at any point on the input waveform between 0. 25 volts and 5 volts above (or below) its average dc level for positive (or negative) going waveforms with a minimum duration of 30 nanoseconds at frequencies from 0 to 10 MHz is obtained by proper selection of slope polarity and level controls.
Sine wave signals above 1 volt rms at frequencies of
50 Hz to 10 MHz may be used for external triggering.
The input impedance is greater than 2. 5k ohms and the maximum transient amplitude which may be applied is :5 volts.
1.4
LINE VOLTAGE TRIGGER
The unit may be triggered from any point on the positive or negative slope of the ac line voltage waveform for either internal or external (see 1. 3 above) operation.
In both cases the trigger point is determined by the setting of the slope level control.
The trigger signal is supplied by the power trans— former secondary for internal operation.
To simulate triggering on the crest
of the sine wave where the rise time is less than the minimum required, it is necessary to incorporate a suitable pulse delay setting.
1. 5 SINGLE PULSE
The instrument may be triggered manually by a pushbutton for one cycle (single or double pulse) of output.
1. 6 GATED OPERATION
External gate signal levels more positive than +1 volt are required to enable the main pulse outputs for either synchronously or asynchronously gated modes.
Levels greater than 10 volts may not be applied.
1. 6.
l Synchronous Gating
The repetition rate generator circuit is disabled in this mode of operation until the unit receives an external gating signal.
The generator turns off again when the signal is removed.
This synchronizes the first main pulse of the gated burst to the leading edge of the gating signal and stops the pulse train when the signal turns off.
Both trigger outputs 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 trigger begin with the first cycle occurring after the application of the gate for either external or internal triggering.
The advanced trigger output is not gated and is available as a clock pulse on internally triggered operations .
1. 6. 3 Coincidence Gating
This mode of operation is achieved by combining external gating with external triggering so that the main pulse outputs occur only when the two are coincident.
l. 7 TRIGGER OUTPUTS
The trigger outputs are positive with an amplitude of 2 volts from a
50 ohm source impedance and a duration of approximately 50 nanoseconds.
1. 7.1
Advance Trigger
This trigger is available on internally triggered operations only and occurs approximately 10 percent of the repetition rate period before the reference trigger.
1. 7. 2 Reference Trigger
The reference trigger occurs approximately 30 nanoseconds after
1-2
the unit is triggered from an external source, or 10% of the repetition rate period after the advance trigger on internally triggered operations.
1. 8 PULSE MODE
Single or double pulse operation is available.
1.8.1
Single Pulse
In single pulse operation one pulse per cycle occurs at the main pulse outputs at the end of the delay period.
1. B. 2 Double Pulse
Two pulses per cycle occur at the outputs in this mode.
One pulse occurs approximately 30 nanoseconds after the reference trigger and the second at a position determined by the pulse delay controls.
The two pulses are essentially identical in width, amplitude and polarity.
1. 9 PULSE DE LAY
The pulse delay (with respect to the reference trigger output) is continuously 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.
1.10
PULSE WIDTH
The pulse width (at 50 percent point of rise and fall) is continuously 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 PULSE OUTPUT
Positive and negative main pulse outputs are provided simultaneously.
They are dc coupled to voltage sources with their baselines at ground potential and are accessible through separate 50 ohm variable attenuators.
The source impedance is very low at maximum amplitude, increasing to essentially 50 ohms at amplitudes of less than 5 volts.
The amplitude controls are continuously variable from 10 volts to less than 0. 5 volts when the outputs are applied to 50 ohm loads.
1.12
PULSE OUTPUT COUNTDOWN
Main pulse outputs stably counted down from the trigger repetition rate by ratios up to 100:1 are obtainable by setting the pulse delay controls nal triggers received during the delay are held off.
On countdown operation, the reference trigger output occurs at the counted-down rate while the advanced trigger which is available on internally triggered operation occurs at the trigger rate.
1. 13 RISE AND FALL TIME
With a 50 ohm resistive load applied to the output, the main pulse rise time is less than 5 nanoseconds and the fall time is less than 7 nano— seconds.
1.14
JITTER
Repetition rate, delay and width jitter are less than 0.1
percent.
1.
15 WAVEFORM ABERRATION
Overshoot, undershoot, ring and top slope aberration are typically less than 15 percent (with a maximum of 17 percent) at amplitudes greater than 2 volts when the outputs are properly terminated by 50 ohm loads.
1.16
OUTPUT PROTECTION
Output stages will not be damaged by any combination of panel control settings and will withstand short circuits to ground of any duration.
The unit is not rated for operation into loads at other than ground potential.
1.
17 OUTPUT MIXING
Multiple units may be diode mixed with no loss of amplitude when the outputs are of the same 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 is rated for operation in ambient temperatures of
0° to 50° c.
1. 19 POWER REQUIRED
Approximately 10 watts at 105—125 volts and 50-400 Hz ac is required by the unit.
All power supplies within the instrument are regulated against line and load changes.
A two-position slide switch mounted on the back panel permits the unit to be operated from either 115 or 230 volt line sources.
1. 20 PHYSICAL CHARACTERISTICS
The cabinet is russet brown with brushed aluminum trim and has front panel is brushed aluminum finished with black etched and filled markings and trim.
The unit weighs approximately 8 pounds and is 3-1/2 inches high by 8—1/2 inches wide and 11 inches deep.
Units may be rack mounted by means of Type 1005 (single unit) or Type 1006 (double unit)
Rack Mounting Sets .
l .21
ACCESSORIES AVAILABLE
1. 21.1
Type 1005 Rack Mounting Set
This standard modular relay rack panel (19 inches wide by 3-1/2 inches high) permits single units to be rack mounted.
1. 21. 2 Type 1006 Rack Mounting Set
Two instruments are mounted in this 19 inch wide, 3-1/2 inch high standard size rack panel.
1.21.3
Type 2003 50 Ohm Termination
This characteristic impedance load may be used as a convenient termination of either the output pulse in various test applications or as a load for the idle output to avoid distortion interference of the output being us ed.
1.21.4
Type 2101 lnverting Transformer
This transformer is used to invert the positive trigger output (advanced or reference) for test applications requiring a negative synchronous pulse output.
1.21. 5 Type 2302 Mixer Unit
Multiple unit outputs of the same polarity are conveniently mixed with no loss of amplitude by this accessoryl.21. 6 Type 2401 Variable Integrator
The application of the Model 101 puise generator with its fixed rise time output pulses may be extended by the 2401 Variable Integrator which provides a means of varying pulse rise and [all times.
1.21.7
Instruction Manuals
One instruction manual is supplied with each unit.
Additional
manuals are available at $5.00
each.
SECTION II
OPERATING INSTRUCTIONS
Z.
1 GENERAL INFORMATION
The basic capabilities of the Model 101 Pulse Generator satisfy a broad range of pulse test requirements.
These consist of repetition rates to 10 MHz, single or double pulse mode operation, 5 nanosecond rise time, i10 volt output amplitudes, i250 millivolt trigger sensitivity and variable pulse width and delay to 10 milliseconds.
Flexible external gating and triggering with countdown capability extends this usefulness, and 100021 coverage on delay and width timing control ranges provides extra convenience of operation
The external gating capability makes synchronous, asynchronous or coincidence gating possible.
In the synchronous gate mode, the output pulse train is synchronous with the leading edge of an externally applied gate waveform with negligible difference in the pulse waveform between the first and last pulse in the gated burst.
In the asynchronous mode, the output pulse train is normally off while the oscillator continuously provides advanced trigger outputs.
Application of an external gating 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 during the pulse train.
Coincidence gating is achieved by application of a gate pulse at the gating input and a trigger source at the external trigger input.
The 101 produces a pulse whenever the two are coincident.
The external trigger circuit utilizes slope level and polarity controls and provides sensitivity of 250 millivolts for oscilloscope type triggering.
Synchronous countdown of external trigger is useful in applications requiring frequency division.
With the delay set greater than the period of an external trigger, the output pulse rate is a subharmonic of the trigger occur at the subharmonic rate.
The repetition rate selector switch permits the unit to be triggered from any point on the positive or negative slope of the ac line voltage wave— form.
This may be applied to power control circuity design using SCR's thyratrons, etc.
rate, counted down by a factor set by the delay control.
Similar operation may be secured by using the internal oscillator.
The advanced trigger out— put occurs at the oscillator rate and the reference trigger and pulse outputs
The 1000:1 coverage on delay and width timing control ranges made possible by a unique circuit design allows extremely wide vernier coverage with little or no sacrifice in resolution.
2.2
DESCRIPTION OF CONTROLS AND CONNECTORS
2.
2.
1 Power Switch
WARNING
Do not connect the unit to a line source nor turn it on before verifying that the 115-230 line voltage selector switch is in the correct position.
1 The POWER toggle switch connects or disconnects ac input voltage to the transformer primary within the instrument and lights the red pilot lamp when it is turned ON.
2.
Z.
Z Repetition Rate Control
The larger eleven position REPETITION RATE knob selects either the trigger mode or the repetition rate range and the smaller vernier knob provides continuously variable frequency control for each repetition rate range setting.
There are six repetition rate ranges in decade steps.
The instrument will be set to the repetition rate indicated by the selector knob position when the vernier knob is fully clockwise.
The EXT TRIG SLOPE (+) and (-) pOSitions provide for instrument triggering from an external source by either a positive or negative going waveform.
In the LINE SLOPE positions the unit is triggered from either the positive or negative slope of the ac line voltage waveform.
The SINGLE PULSE position of the REPETITION RATE selector knob allows the instrument to be triggered manually by the red SINGLE
PULSE button for one cycle of output.
The setting of the TRIGGERING LEVEL control determines the amplitude point of either a positive or negative signal that will operate the unit for both external and line voltage triggering.
A BNC connector (TRIGGER INPUT) is provided for the input signal when the instrument is triggered from an external source.
2.2. 3 Gate Mode
The three position GATE MODE slide switch determines whether the
2-2
main pulse output will be continuous (in the NON—GATED position) or will occur in gated bursts as controlled by an externally applied gating signal.
In the two gated modes, internal circuits are disabled and main output pulses occur only when a gate signal is applied to the unit.
The repetition rate generator circuit is disabled when the GATE
MODE switch is in the SYNC position.
The first main pulse of a gated burst in this mode is synchronized to the leading edge of the gating signal.
Both trigger outputs are also gated.
In the ASYNC position the main output is held off by disabling the time delay circuit and the repetition rate generator is uninterrupted.
Both the main pulse output and the reference trigger begin with the first cycle occurring after the application of the gate for either internal or external triggering.
The advanced trigger output is not gated and is available as a clock pulse on internally triggered operations.
The BNC connector labeled ENABLING GATE INPUT is provided for the gate signal input when the unit is operated in either of the gated modes.
2. 2.4
Trigger Outputs
Two BNC connectors labeled TRIGGER OUTPUT provide for advanced and reference trigger outputs of approximately 50 nanoseconds duration.
The ADVANCED trigger is available 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 triggered from an external source.
2.2. 5 Pulse Mode Switch
Single or double pulse operation is selected by the two position PULSE
MODE switch.
In the SGL position one pulse per cycle occurs at the outputs following the reference trigger by a period determined by the pulse delay controls.
Two identical pulses occur when the slide switch is in the DBL position with the second pulse at a.
position determined by the pulse delay controls and the first pulse approximately 30 nanoseconds after the reference trigger.
2.2. 6 Pulse Delay Control
The larger six position PULSE DELAY knob selects the range in decade steps and the smaller vernier knob provides continuously variable control for each position for delay times ranging from 30 nanoseconds to 10 milliseconds.
The instrument will be set to the delay indicated by the selector knob position when the vernier knob is fully clockwise.
2.2. 7 Pulse Width Control
The larger six position PULSE WIDTH knob selects the range in decade steps and the smaller vernier knob provides continuously variable control for each position for pulse widths ranging from 30 nanoseconds to 10 milliseconds.
The instrument will be set to the pulse width indicated by the selector knob position when the vernier knob is fully clockwise.
2—3
1 a Z. 2. 8 Amplitude Control
The POSITIVE and NEGATIVE AMPLITUDE knobs provide continuously variable control from
10 volts to less than 0. 5 volts for simultaneously occurring positive and negative main output pulses.
the
For both outputs the baseline is at ground potential and the source impedance is very low (approximately 50 ohms or less).
The POS OUTPUT ENC connector couples the variable parameter positive pulse to an external load.
The NEG OUTPUT BNC connector couples the variable parameter negative pulse to an external load.
The GRD jack provides access to the instrument ground for test connections.
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 Generator.
d.
Datapulse Type 2003 Power Termination.
2. 3. 2 Preliminary Settings
WARNING
Do not connect the unit to a line source nor turn it on before verifying that the 115-230 line voltlge selector switch is in the correct position.
a.
Turn the REPETITION RATE selector knob to the O. 1 MHz position and the vernier knob fully clockwise.
b.
Turn the PULSE DELAY selector knob to the 0. l‘pS position
and the vernier knob fully clockwise.
c.
Turn the PULSE WIDTH selector knob to the l. 0 uS position and the vernier knob fully clockwise.
d.
Turn both AMPLITUDE knobs fully clockwise to the
10V positions.
I
2-4
I
._
I I'
’
' e.
Set the GATE MODE switch to the NON—GATED position.
f.
Set the PULSE MODE switch to the SGL position.
g.
Connect the Datapulse Type 2003 Power Termination or a suitable
50 ohm, 2 watt (minimum) load to the POS OUTPUT jack.
2.
3.
3 Main Pulse Output a.
Set the front panel controls to the preliminary settings in step
2.3.2
(above).
b.
Turn the POWER switch ON.
The pilot lamp should light.
c.
Synchronize the sampling oscilloscope from the REFERENCE
TRIGGER OUTPUT, set the sweep for 0.2
pS/cm and the amplitude for 2V/cm.
d.
Monitor the positive output at the terminating load with a high impedance probe.
A single flat topped pulse 5 cm wide and 5 cm high with near vertical rise and fall time should appear on the oscilloscope.
e.
Turn the POSITIVE 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 from the POS OUTPUT and reconnect it to the NEG OUTPUT.
The negative pulse should look like the positive pulse inverted on the oscilloscope.
g.
Repeat step e (above) for the NEGATIVE AMPLITUDE control.
h.
Turn the PULSE WIDTH vernier counterclockwise.
The pulse width should follow the control and decrease successively.
Return the vernier to its clockwise position.
i.
Vary the PULSE DELAY vernier.
The pulse should move smoothly left or right, following the control movements.
2.3.4
Double Pulse Mode a.
Turn the unit on with its controls set to the preliminary settings ofstep2.3.2.
b.
Set the sampling oscilloscope sweep to 1.0
us /cm and synchronize it to the ADVANCED TRIGGER OUTPUT.
c.
Set the PULSE MODE switch to the DBL position.
d.
Turn the PULSE DELAY selector to the 10 uS position and its vernier fully counterclockwise.
e .
Turn the PULSE DELAY vernier clockwise noting that a second pulse appears on the oscilloscope and moves smoothly from left to right as the vernier is turned clockwise.
Vary the PULSE WIDTH vernier.
Both pulses should change successively and follow the control variations.
2.3. 5 Single Cycle Operation a.
Monitor the output with the real time oscilloscope synchronized to the REFERENCE TRIGGER OUTPUT with its sweep set to
O. l MS/cm and its amplitude set to 5V/cm.
b.
Set the GATE MODE switch to the NON-GATED position and the
PULSE MODE switch to SGL.
Switch the REPETITION RATE selector to the SINGLE PULSE position.
d.
Turn the PULSE DELAY to 10 uS and its vernier fully counterclockwise.
Set the PULSE WIDTH to 0.
1 MS 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 the button is pressed.
2.3. 6 External Trigger Operation a.
Switch the REPETITION RATE selector to the (+) EXT TRIG
SLOPE position and the PULSE WIDTH to 10 uS but retain the other control settings and oscilloscope connections of step 2. 3.5.
Connect the external trigger source (Datapulse 101 or equivalent) to the TRIGGER INPUT jack and set its REPETITION RATE to
10 KHz with vernier fully clockwise, its PULSE DELAY to minimum and its PULSE WIDTH to approximately 30 nanoseconds.
Turn both the trigger source and the unit under test on.
Adjust the TRIGGERING LEVEL control until several pulses appear on the oscilloscope.
Turn the external trigger source REPETITION RATE vernier counterclockwise and note that the number of pulses on the oscilloscope reduces successively as the trigger repetition rate is decreased.
2-6
Switch the REPETITION RATE selector to the (-) EXT TRIG
SLOPE, the external trigger source to its negative output, and repeat steps d and e (above).
2. 3. 7 Line Slope Triggering a.
Turn the REPETITION RATE selector to the (+) LINE SLOPE position but retain all other control settings of step 2. 3. 6.
b.
Set the oscilloscope sweep to 5 MS/cm and synchronize it to the ac line (by the oscilloscope sync control).
Turn the unit on and vary the TRIGGERING LEVEL control noting that pulses appear on the oscilloscope, then shift and disappear as the control is varied.
Switch the REPETITION RATE selector to the (-) LINE SLOPE position and repeat step c.
2. 3. 8 Gating Operation a.
Set the REPETITION RATE selector to 0.
1 MHz with its vernier fully clockwise.
b.
Turn 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 AMPLITUDE to the 10V position.
Set the GATE MODE switch to the SYNC position.
Connect an external gating source (Datapulse 101, or equivalent) to the ENABLING GATE INPUT jack.
Set the gating signal REPETITION RATE to 1. 0 KHz, PULSE
DELAY to 10 uS and PULSE WIDTH to 0. 1 MS with all verniers fully clockwise, and adjust its POSITIVE AMPLITUDE to 2 volts.
CAUTION
Do not exceed the maximum permis~ sible signal level of 10 volts.
monitor both the gating signal (upper trace) and the POSITIVE
Use the real time oscilloscope with its dual trace attachment to
OUTPUT of the unit being tested (lower trace).
Synchronize the oscilloscope with the gating signal generator REFERENCE
TRIGGER
OUTPUT and set its sweep to 20 uS/cm.
Adjust the amplitude of
2-7
the upper trace to lV/cm and the lower trace to SV/cm.
With both the unit under test and the gating signal generator turned on, several pulses should appear on the lower trace synchronized with the gate pulse on the upper trace.
Vary the gate signal PULSE WIDTH vernier and note that the pulses on the lower trace disappear successively as the gate pulse width
(upper trace) is reduced.
Monitor the ADVANCED TRIGGER OUTPUT of the unit under test on the upper trace of the oscilloscope and synchronize the oscilloscope 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 RATE selector to l. 0 MHz with its vernier fully clockwise, the PULSE WIDTH vernier fully counterclockwise, and the GATE MODE switch to ASYNC.
Set the gating signal REPETITION RATE to 10 KHz and PULSE
DELAY and PULSE WIDTH to 10 uS with all verniers fully clockwise.
Vary the gate signal PULSE WIDTH vernier and note that the pulses on the lower trace disappear successively as the vernier is turned counterclockwise.
The advance trigger pulses on the upper trace are not affected.
SECTION III
THEORY OF OPERATION
3. 1 GENERAL DESCRIPTION
Refer to the block diagram for the following discussions.
A clock pulse (1 C) with a variable repetition rate is generated by the rate oscillator and applied to the trigger multivibrator which produces the system clock pulse (1 D) for the pulse generator.
The oscillator output is also applied to the advance trigger amplifier to pro— vide a synchronous “zero" time reference trigger output for internally triggered operations.
When the rate oscillator is turned on by the repetition rate selector in any of the six range positions, its output governs the operation of the remaining circuits through its control of the trigger multivibrator.
When the repetition rate selector is in either of the two external trigger or the two line trigger positions, the external trigger amplifier is turned on and its output (1 B) controls the system clock pulse.
No advance trigger occurs because the rate oscillator is turned off.
A sample of the ac line voltage is taken from the power transformer secondary for 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 continuous in the non-gated mode of operation but will be interrupted and will occur in bursts in either of the two gated modes of switch $2.
The AND gate permits the delay multi— vibrator to be driven continuously by the system clock or to be turned on and off by gate signals from the gate emitter follower.
In the synchronous mode the external gate amplifier controls the rate oscillator and turns it on and off.
The main output pulse train is synchronized with the leading edge of the gated waveform and is turned off at the trailing edge.
In the asynchronous mode the output of the external gate amplifier is applied to the gate emitter follower to control the delay multivibrator rather than the rate oscillator.
The signal from the gate emitter follower gates the signal from the trigger multivibrator through the AND gate to the delay multivibrator.
This permits the rate oscillator to provide a continuous output of advance trigger pulses and causes the output pulse train to begin with the first advance trigger after the gate is applied and to
f3 continue until the gate is removed.
The reference trigger output is gated in both modes of operation.
Both the leading and trailing edges of the delay multivibrator output waveform are differentiated to produce trigger pulses separated in time by the delay period.
These are applied to the reference trigger amplifier and to the width multivibrator through the OR gate.
Switch S71 disconnects the leading pulse from the input to the width multivibrator (l E) in the single pulse mode so that the main output is a.
single pulse separated in time from the reference trigger output by the delay period.
In the double pulse mode, the width multivibrator is turned on twice during each cycle by the two trigger pulses.
The first pulse occurs approximately 30 nanoseconds after the reference trigger output and the second at a point determined by the pulse delay controls.
Both pulses are essentially identical.
The pulse width in either mode is determined by the period of the width multivibrator.
The output of the width multivibrator (2 A) is us ed by the output drivers to generate a signal (2 C) to drive the positive output amplifier.
An inverted version (2 B) generates the signal (2 D) used to drive the negative output amplifier.
Variable attenuators provide output pulse amplitude control.
The overload protection circuits are current sensitive and turn off their respective power supplies when either output is overloaded.
3.2
CIRCUIT DESCRIPTION
Refer to the schematic diagram for the following discussions.
3 2.1
Repetition Rate Oscillator
The internal rate oscillator is an emitter coupled multivibrator with high level positive feedback for ac provided by the timing capacitors
C6 through Cll.
This circuit supplies a free-running basic rate that governs the remaining circuits and provides system clock output pulses.
In addition, it has the capability of synchronously starting oscillations that begin at the leading edge of a control gate and continue until the gate is removed.
The oscillator circuit consists of transistors Q2, Q3, and
Q4 and their related circuit components.
To trace the cycle of operation, assume that Q4 is cut off and Q2 is conducting; the waveform at the base of Q4 will then be rising exponentially toward ground.
The emitter of Q4 will be held near ground by the conducting emitter of Q2 and when the base of Q4 reaches ground, Q2 will start to cut off.
The resulting positive step at the collector of OZ will be transferred through emitter follower C3 and the timing capacitor (C6 through C11) to the base of Q4.
QB provides a low impedance discharge path for the timing capacitor through diode CR3 to ground.
C4 will regeneratively turn on while QZ is turned off but the circuit will remain in this condition for only a short time because of the low impedance of CR3.
It will again become regeneratively unstable and Q4 will be cut off when the timing capacitor discharges through CR3, starting the cycle over again.
The collector of Q4 provides an isolated output that does not affect the timing circuitry and is used to drive the trigger multivibrator (CR50 and
08) and the advance trigger amplifier (Q7).
The positive step at the collector of Q4, when it is cut off operates the trigger multivibrator and the negative step, when Q4 again conducts drives the advance trigger amplifier.
The negative step always appears somewhat before the turnoff of Q4 and is present whenever the rate oscillator is running.
3, Z. 2 External Gate Amplifier
Q1 is a buffer amplifier stage which inverts the external gate and provides the standardized output to gate the rate oscillator and the delay multivibrator.
The base to emitter drop of Q1 sets the gate amplitude requirement and base resistor R2 provides input impedance as well as protection from overdrive.
In the asynchronous gating mode, the output of ()1 drives Q9 which is used to gate the delay multivibrator.
The rate oscillator is not gated.
In synchronous gating, the rate oscillator is stopped at a point in its cycle just before the turn off of Q4 would normally Occur and is held in this condition by the current through resistor R4 and diode CR1.
The application of a gate signal drives the collector of Ql abruptly negative and allows Q4 to turn off by stopping the current flow in R4 and CR1 that was holding its base
3-4
positive, The sudden drop at the collector of Q1 also produces a negative step through R7 to the collector of OZ comparable to the step that turns 02 on during normal oscillations.
This causes the oscillator to start promptly at the leading edge of the gate, just as though it had been running before the gate was applied.
3 2, 3 Advance Trig er Amplifier
The advance trigger amplifier Q7 is designed to differentiate the output of the rate oscillator by means of its small emitter bypass capacitor
C55.
It uses the negative going edge of pulses from Q4 to produce positive triggers at its collector.
These are terminated in a 51 ohm resistor R62, and applied to the advance trigger output jack.
3. 2. 4 Trigger Multivibrator
The positive going output from Q4 is applied through diode CRSZ to the trigger multivibrator circuit consisting of CR50, Q8 and their related circuit components.
CR50 is a 5 milliampere tunnel diode functioning as a high speed Schmidt Trigger circuit.
The current swing available from
Q4 is determined by the circuit parameters and is assured to be more than the swing required to trip CR50 from its low voltage to its high voltage condition and back again as the rate oscillator cycles.
At each positive transition of CR50 a 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 operation.
By virtue of the small emitter bypass capacitor
C53, a sharp differentiated pulse appears at the collector of QB and is used to trigger the delay multivibrator.
Q8 also serves to prevent the reaction of the delay multivibrator from reaching the rate generator.
3. 2.. 5 Delay Multivibrator
The delay multivibrator consists of transistors Q10 and Qll and their related circuit components.
These transistors form a complementary oneshot multivibrator whose pulse width determines the delay interval.
In order to achieve the high ratio of delay to recovery time, the transistors are arranged so that both are normally conducting and during the delay period, both are turned off.
At the end of the delay period, both conduct heavily, providing a short recovery period and permitting the delay period to be almost as long as the period of the rate oscillator.
A negative trigger from the trigger multivibrstor applied tothe base of Qll through diode CR51 starts to cut Qll off.
The resulting positive waveform at the collector of Qll is applied to the base of 010 cutting 010 off and causing its collector to go negative.
This adds to the negative signal at the base of Qll, completing its turn off and causing 011 to block the negative signal from the trigger source.
When Q10 is cut off, the voltage at its emitter which is initially at ground starts to build up because of the charging of the timing capacitors
(C70 through C75) through timing resistors R71 and R72.
When this voltage reaches the voltage of the base of Q10 which is determined by the setting of delay potentiometer R75, 010 starts to conduct again.
A regenerative turn— on of both transistors follows with Q10 turning 011 on and Q11 reinforcing the turn—on at the base of Q10.
The basic period is determined by the timing capacitors which are selected for decade ranges and vernier fill-in is provided by delay potentiometer R75.
The collector of Q11 is allowed to make a full 12 volt amplitude output by the disconnect action of diode CR70.
The output pulse is differentiated at the collector of 011 by inductor L70 and resistor R77.
3. 2, 6 Pulse Transformer
Pulse transformer T70 is used to provide the several outputs required of the circuit.
As shown in the schematic, the transformer windings which have dots have a positive spike at the beginning of the delay period and a negative spike at the end.
In order for the width multivibrator to operate properly in the single pulse mode it must receive a negative trigger from the pulse transformer at the end of the delay period.
In the double pulse mode, it must receive a negative trigger at both 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 the diode mixers CR72 and CR73.
The pulse mode switch S71 disconnects the negative output appearing at the beginning of the delay time during single pulse operation.
3.2. 7 Reference Trigger Amplifier
An additional output is taken from the pulse transformer at the beginning of the delay period as a negative trigger and applied to the base of
012, the reference trigger amplifier.
These triggers will be counted down if the period of the delay generator is longer than the period of the incoming triggers.
012 responds only to the negative going triggers at its base and produces a positive pulse into 51 ohms (R81) at its collector for the reference trigger output.
Diode CR71 prevents 012 from being turned on by the current available from +12 volts through R79 until the negative base signal appears and also keeps (.212
from being responsive to the positive portion of the base waveform.
3. 2. 8 Width Multivibrator
The width multivibrator circuit is the same as the delay multivibrator circuit and consists of transistors 013, 014 and their related circuit components.
The input trigger is supplied by the pulse transformer.
The basic width ranges, in decade steps are determined by timing capacitors C90 through C95 with vernier fill-in supplied by width potentiometer R95.
The output from the collector of Q14 is applied to the output driver stages across resistor R96.
3-6
A detailed circuit description is obtained by substituting the corresponding circuit component in the detailed description of the delay multivibrator circuit.
3.2.9
Gate Emitter Follower
In addition to operating as a steering diode for the delay multivibrator input, CR51 is used to inhibit triggers from QB (trigger multi— vibrator pulse shaper) when the gate waveform at the base of Q9 is in its positive or inhibit condition.
This gate depends on the fact that the collector of Q8 can be readily raised by the emitter of Q9 in such a manner as to back bias CRSI sufficiently to prevent the passage of triggers from 08The resistor divider (R50 and R51) in the base of Q9 serves to set the gate waveform level at the emitter of Q9 to the dc level for proper gating operation of the delay multivibrator.
3.2.
10 External Trigger Amplifier
The external trigger amplifier consists of transistors Q5 and Q6 and the associated switching circuits.
The transistors are arranged as an emitter coupled differential amplifier centered about ground.
The dc component of the input signal is removed by coupling capacitors C31 and
C32 while the triggering level potentiometer, R36, makes it possible to re-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 supplied current from +12 volts.
This is controlled by the two external trigger positions of the repetition rate selector switch.
The output from the collector being used is applied to the trigger multivibrator through diode CR30 or CR31 while +6 volts is applied to the unused collector through either CR32 or CR33.
For example, in the positive external trigger mode,
Q6 supplies its output through CR31 and receives collector current from
+12 volts while Q5 is prevented from contributing to the output because CR30 is back biased by the drop across CR32.
The output is applied to the tunnel diode of the trigger multivibrator which requires 5 milliamperes to swing it from one state to the other.
Therefore the input sensitivity is determined by the input required to supply this 5 milliamperes.
3.2.
11 Single Cycle Operation
The single pulse pushbutton trips the trigger multivibrator by current made available from +12 volts by the single pulse position of the repetition rate selector switch.
The trigger amplifier circuit is disabled in this mode because neither collector is supplied current from +12 volts.
Switch chatter is decoupled by resistor R34 and capacitor C30.
3-7
3.2. 12 Output Driver and Amplifier Circuits
The driver circuits which consist of transistors 015 through Q18 are essentially overdriven amplifiers which contain diodes to aid in the prevention of stored charge effects.
The output amplifiers 019 through
C22 are emitter followers which have their currents applied through decoupling networks whose impedance is constant with frequency.
This helps to reduce tilt of the output due to low collector voltages reflecting through to the emitter.
Diodes CRllo and CRlll form a Baker Clamp to aid the recovery of Q16.
Diode CR112 holds the bases of 019 and QZO slightly below ground to slice off small baseline irregularities prior to the leading edge of the pulse.
Constant impedance bridge "T" attenuators connect the output transistors to the output terminals.
The positive going signal applied to the base of 015 by the width multivibrator turns Q15 on.
The current in 015 turns Q16 on and drives the bases of Q19 and Q20 positive causing them to turn on.
The resulting positive pulse at the emitters of 019 and Q20 is applied to the positive output 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 diode CR131 helps reduce stored charge effects.
The collector of 018 and the base of the output transistors are held slightly above ground by the current through CR132.
This helps remove irregularities from the baseline for the negative pulse.
The negative output is supplied by emitter followers Q21 and Q22 through its variable attenuator.
3.2.
13 Power Supplies
The current required by the output stages varies considerably with duty factor and is measured in the power supply by a.
pair of overload protection transistors 028 and Q29.
When the drop across the current sensing resistors reaches approximately the base to emitter voltage of the transistors, a signal is fed to the regulators shutting down the power supply and preventing the output transistors from being overloaded.
The remainder of the power supply is a straightforward regulator consisting of a simple pass transistor error amplifier and zener reference diode.
The positive and negative 12 volt supplies are essentially identical and the +6 volts is provided by a single emitter follower referenced to zener diode CR507.
3-8
SECTION IV
CALIBRATION
4.1
CALIBRATION
PROCEDURE
Equipment
(or equivalent)
Required a.
b.
C.
Triplett
Model 630 VOM.
Tektronix Model 661
Sampling Oscilloscope.
Tektronix
Model 543 Real Time
Plug—in.
Oscilloscope with a CA cl.
e.
Datapulse
Model 101 Pulse Generator.
Datapulse
Type 2003 Power Termination.
4.
l. 2 Power Suppl! Section a.
Remove the top panel by taking out the four mounting screws.
b.
Check the ac line voltage between p oints BA and BR on the
The voltage should be right rear corner of the circuit board.
between
105 volts and 125 volts.
Check the following dc voltages for the indicated toler ances
(the voltage points are marked on the top of the circuit board):
1.
+12 volts 1:0. 6 volts dc (four test points)
2.
+6 volts :0. 3 volts dc
3.
—12 volts :0. 6 volts do (two test points)
4.1.
Repetition Rate
Generator a.
Remove the bottom panel by taking off the four rubber feet.
b.
Turn the
REPETITION
RATE selector to 1. 0 MHz vernier fully clockwise.
and the
Set the GATE MODE
PULSE
MODE switch switch to the NON-GATE!) to the 50]..
position.
position and the
Turn the
PULSE
WIDTH selector to 0.1
ps and the clockwise.
vernier fully
4-1
Connect the 50 ohm, 2 watt (minimum) power termination to the
POS OUTPUT jack.
Adjust the POSITIVE AMPLITUDE control to any convenient setting.
Turn the POWER switch ON.
Monitor the output at the terminating load on the real time oscilloscope using a high impedance probe.
Use an oscilloscope to measure the repetition rate and verify that it is l. 0 MHz (with a period of 1. 0 microseconds).
If it is not, R15 (the oscillator calibration potentiometer) should be adjusted to the repetition rate indicated on the front panel by the position of the selector (in this case 1.0
MHz).
R15 is on the circuit board in the front left corner under the repetition rate control assembly, labeled OSC on the top and accessible from the bottom as a screwdriver adjustment.
CAUTION
Be sure the REPETITION RATE vernier is fully clockwise before adjusting R15.
Turn the REPETITION 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 to set R15 correctly, the oscillator circuit is probably malfunctional.
Turn the REPETITION RATE selector to 0. 1 MHz and the vernier fully clockwise.
Switch the PULSE WIDTH to l. 0 us and use the oscilloscope to verify that the repetition rate is O. 1 MHz.
Turn the REPETITION RATE vernier fully counterclockwise and verify that the frequency is less than 10 KHz.
Set the REPETITION RATE selector to 10 KHz with the vernier fully clockwise and switch the PULSE WIDTH to 10 us.
Verify that the repetition rate is 10 KHz for these settings and less than 0.
l KHz with the vernier fully counterclockwise.
Set the REPETITION RATE selector to l. 0 KHz with the vernier fully clockwise and switch the PULSE WIDTH to 0.1
MS.
Verify that the repetition rate is l. 0 KHz for these settings and less than
0. 1 KHz with the vernier fully counterclockwise.
4-2
l fl fl
‘ f fl fl l l
Turn the REPETITION RATE selector to 0. 1 KHz with th e vernier fully clockwise and the PULSE WIDT
H selector to
1.0
MS.
Verify that the repetition rate is 100 Hz for thes e settings and less than 10 Hz with the vernier fully co unterclockwise.
Set the REPETITION RATE selector to 10 MHz with the vernier fully clockwise, switch the
PULSE WIDTH selector to 0.
1 ”S and turn its vernier fully counterclockwise.
Verify that the repetition rate is not,
10 MHz for these settings.
If it is trimmer capacitor C11 should be adjusted to get the proper repetition rate.
C11 is mounted on the repetition rate control assembly and is accessible from the top as a sc rewdriver adjustment.
NOTE
Use a nonmetalic insulated screwdriver for this adjustment.
CAUTION a.
Be sure the REPETITION
RATE vernier is fully clockwise before adjusting C11.
p.
Turn the REPETITION RATE vernier fully counterclock wise and note that the frequency goes down to less than 1.0 MHz.
4. 1.4
Pulse Dela!
Circuit
Monitor both the P06 OUTPUT and the REFEREN
CE TRIGGER
OUTPUT using the real time oscilloscope with its dual trace attachment.
Synchronize the oscilloscope to the REFERENCE
TRIGGER OUTPUT.
Set the GATE MODE switch to the NON-GATED position, the
PULSE
MODE switch to SGL and the POSITIVE AMPLITUDE to a convenient setting.
Set both PULSE
DELAY and the PULSE WIDTH selectors to
1. 0 us with their verniers fully clockwise.
Turn the REPETITION
RATE selector to 0.
1 MHz and its vernier fully clockwise.
Verify that
1. 0 microseconds of delay occurs between the reference trigger and the positive output on the scope.
If not, R71
(the delay calibration potentiometer) should be adjusted for the correct delay.
R71 is near the center of the circuit board, labeled DEL on the top and accessible from the bottom as a screwdriver adjustment.
CAUTION
Be sure the PULSE DELAY vernier is fully clockwise before adjusting R71.
m
-
.l.
Turn the PULSE DELAY and PULSE WIDTH selectors to 10 p5 and their verniers fully clockwise.
Set the REPETITION RATE selector to 10 KHz with its vernier fully clockwise.
Verify that
10 microseconds delay occurs between the reference trigger and the output pulse.
Switch the PULSE DELAY and PULSE WIDTH selectors to 0. 1 MS and the REPETITION RATE selector to 1. O KHz with all verniers fully clockwise.
Verify that a delay of 100 microseconds occurs between the reference trigger and the output pulse for these settings.
Turn the PULSE DELAY and PULSE WIDTH selectors to l. 0 MS and the REPETITION RATE selector to 0.
l KHz with all verniers fully clockwise.
Verify a delay of 1. 0 milliseconds for these settings.
Set the PULSE DELAY and PULSE WIDTH selectors to 10 MS with their verniers fully clockwise and turn the REPETITION
RATE vernier fully 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 fully clockwise.
Verify a delay of 0.
1 microseconds that goes down to less than 30 nanoseconds when the PULSE DELAY vernier is turned fully counterclockwise.
If not, trimmer capacitor C70 should be adjusted for the proper delay setting.
C70 is mounted on the pulse delay control assembly and is accessible from the top as a screwdriver adjustment.
NOTE
Use a nonmetalic insulated screwdriver for this adjustment.
CAUTION
Be sure the PULSE DELAY vernier is fully clockwise before adjusting
C75.
Puls e Width Circuit a.
Monitor the POS OUTPUT with the real time scope synchronized to either TRIGGER OUTPUT.
Set the GATE MODE to the NON-GATED position, the PULSE
MODE switch to SGL and the POSITIVE AMPLITUDE to a convenient setting.
Set the PULSE WIDTH selector to l. 0 [LS and the REPETITION
RATE selector to 0.
1 MHz with both verniers fully clockwise.
4—4
C
C
C
W
F3 r;
Use the scope to verify that the pulse width is 1. 0 microseconds.
If the setting is incorrect, adjust R91 (the width calibration potentiometer).
R91 is mounted on the circuit board near the
POWER switch, labeled WID on the top and accessible from the bottom as a screwdriver adjustment.
CAUTION
Be sure the PULSE WIDTH vernier is fully clockwise befoie adjusting R91.
Switch the PULSE WIDTH selector to 10 uS and the REPETITION
RATE selector to 10 KHz with both verniers fully clockwise.
Verify that the pulse width is 10 microseconds.
Set the PULSE WIDTH selector to 0.1
MS and the REPETITION
RATE selector to l. 0 KHz with both verniers fully clockwise.
Verify that the pulse width is 0. 1 milliseconds.
Turn the 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 vernier fully clockwise and turn the REPETITION RATE vernier fully counterclockwise with its selector set to 0.
1 KHz.
Verify a pulse width of 10 milliseconds.
Set the PULSE WIDTH selector to 0. 1 us and the REPETITION
RATE selector to l. 0 MHz with both verniers fully clockwise.
Verify a pulse width of 0. 1 microseconds that goes down to less than 30 nanoseconds when the PULSE DELAY vernier is turned fully counterclockwise.
If not, trimmer capacitor C90 should be adjusted for the proper width.
C90 is on the pulse width control assembly and is accessible from the top as a.
screwdriver adjustment.
NOTE
Use a nonmetalic insulated screw— driver for this adjustment.
CAUTION
Be sure the PULSE WIDTH vernier is fully clockwise before adjusting C95.
ADDENDA AND ERRATA
Datapulse Model 101 Pulse Generator
E.
O.
EFFECTIVE
NO.
DATE DWG.
NO.
CHANGE
A
2021 8~26-66 Transistor
Equiv.
SM 1330, P/N12685—004is an accept— able substitute for DP63-6, P/N 22635—
006.
2028 6-9-66 Manual
Section 1, paragraphs 1.7, 1.7.1,
1.
7.2
and 1. 9 should read as follows:
1.7
TRIGGER OUTPUTS
The trigger outputs are positive with a duration of approximately 50 nanoseconds.
1.7.1
Advance Trigger
The advance trigger has an amplitude of l.
7 volts from a 50 ohm source impedance and is available on internally triggered 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 a 50 ohm source and occurs approximately 30 nanoseconds after the unit is triggered from an external source, or 10 percent of the repetition rate period after the advance trigger on internally triggered operations.
1. 9 PULSE DELAY
The pulse delay (with respect to the reference trigger output) is contin— uously variable by means of a six position decade switch and a fill—in vernier control over a range of approximately 40
2081
Substitution
T rans istor 8-26-66 nanoseconds to 10 milliseconds.
The maximum duty cycle is at least 70 per— cent.
ZNZlOZ, P/N 12686 may be used in lieu of ZNZZ70, P/N 12695—001.
MODEL 101
ADDENDA AND ERRATA
Pg.
2
E.
O.
NO
EFFECTIVE
DATE DWG.
NO.
CHANGE l
2096 9-9-66 Tech.
Data
Sheet M101
Manual
Para.
1.10,
2. Z. 7, 4. 1. 5
Specification Change
1.
On reverse side of sheet, left c column, last paragraph — Pulse
Duration: Change 30 nsec to 35 nsec.
2.
Right column — Rise and Fall
Time: Change ".
.
.and
fall time is less than seven nanoseconds. " to
".
.
. and fall time is 7 nanosec typ.;
I 10 nanosec.
max."
3.
Change min.
pu15e width spec.
from 3 nsec to 35 nsec.
Para.
1.13
Same as Item 2.
Para.
3. 2.12, After the first sentence, add the
Sub.
Para.
4 following: "C131 is a drive adjustment to provide the best output waveform.“
2126 10-26-66 J40000-154B Change P03. and Neg. output circuits as shown:
32:99:51.1; 99 4.0,
i"
ca "5 Pas
IN 995
MODEL 101
ADDENDA AND ERRATA
Pg.
3
EFFECTIVE
DATE
DWG.
NO.
CHANGE
NEG. Oprvurgwgu t cm,
141.1:
L/M37000—429
Rev.
B
Ass'y — Main Circuit Board
1.
Change 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.
Manual 2.120
1126
10—13—66
10-14-66 J40000-154A
3.
Add CR115 and 135, Diode, 1N995,
P/N 12144—003.
4.
Add CR113, 114, 133, 134, Diode,
DP16-0, P/N 22164-000.
Jitter Specifications — Change from
0.1% to 0.1% typical, 0.15% max.
on each range (Within highest decade on width and delay ranges).
Incorporated EC.
‘5: 2051, 2071, 2077A,
2080, 2095, 2106, 2119.
ADDENDA AND ERRATA
22.34
2235
2.254
Pg.
1
E.
O
NO.
EFFECTIVE
DATE DWG.
NO.
CHANGE
2219 3—6-67 Manual and Model 101 - Specifications
Tech.
Bulletin Make the following changes:
From:
Advance trigger positive pulse .....
approximately 50 ns duration.
.
.
Reference trigger positive pulse. .
..
approximately 50 ns duration.
.
.
To:
Advance trigger positive pulse.
.
.
.
typically 15 ms duration.
.
.
Reference trigger pulse.
..
typically
15 ns duration.
.
.
.
3-23-67
3-23—67
Tech.
Bulletin Waveform Aberration
Manual Change: ".
.
. at amplitudes 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."
J4000O-154C
L/M37000-
429 "B"
Schematic
Change C134 82 pF, capacitor to C136, ref, des.
(located at junction of CR134,
R135, CR135 near 021 and 022).
4—17—67 TB-Manual Model 101 — Specifications
CHANGE:
ADVANCED TRIGGER: Positive pulse , minimum 1.
7V from 50 ohm source typi— cally 15 ms duration.
Available on internally triggered operations only.
Occurs approx.
10% of the repetition rate period before the reference trigger.
REFERENCE TRIGGER: Positive pulse, minimum 2V from 50 ohm source, typi— cally 15 ns duration.
Occurs approx.
30 ns after triggering from an external source.
anJDJiLL 10l l
MODEL 101
ADDENDA AND ERRATA
Pg.
2
E.
O.
EFFECTIVE
NO.
DATE DWG.
NO.
CHANGE
2281B
2282.
5-26-67
6-1—67
340000-154C
Schematic Front End
Add a 0.1
p.17, 75V, ceramic capacitor, of S30
L/M37000-430 P/N 11242-104 across contacts single cycle pushbutton switch.
J40000-154C
Schematic Front End
L/M37000-429
Add acapacitor,
82 pF, 500V, 5%, PIN
1k, 1/4W
11077-820 in parallel with R2, resistor.
9048 H
\949'7—6 g)
IS ickemaéhb jqoooc—
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619908
GOEQQB IL‘;7-E?
H—W’G?
blm37000’43d 3' Cha-“qe “0 (mm Q'Q‘DF' 30V, loch;
Pm ”Sn—835
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Schxavmj£6~
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@A‘TAEJ JLE E
DIVISION OF DATAPULSE' INGDR PDRATED
SERVICE BULLETIN
N0.
1-65
[1
SEMICONDUCTOR REPLACEMENTS
(Applicable to all Datapulse Models except the Model 100 and 102)
Datapulse makes extensive use of house labeled semiconductors, superseding or used in place of commercial equivalents.
In most cases.
these are procured against relaxed or actual commercial equivalent specifications.
and commercial equivalents as listed below may, therefore7 be used as replacements.
DATAPULSE
TYPE NO. >1=
DATAPULSE
PART NO.
COMMERCIAL
EQUIVALENT
Diodes:
DPlé-O
DPlé-l
DPlé—Z
DP19—0
DP19-1
DP19—6
22164—000
22164—001
22164-002
22194-000
22194-001
22194—006
1N3600
1N3604
HPAIOO3
1N2070
1N4002
1N207l
Transistors:
DP43-0
DP46-0
DP46—l
DP59—O
DP60-0
DP60—1
DPoO-Z
DP60—3
DP60-4
DP60—5
DP60—6
22435—000
22465-000
22465-001
22595-000
22605—000
22605-001
22605-002
22605-003
22605-004
22605-005
22605—006
2N984
2N964A
None**
2N1132A
2N2411
None**
2N2904 or 2N3133
2N2894
2N3209
FTl702
2N364O
DP63-0
DP63-l
DP63—2
DP63—3
DP63—4
22635—000
22635—001
22635-002
22635—003
22635—004
2N2369 or 2N2501
2N3723
Nonefi“?=
2N2369A
2N3646 or 2N3605 or
ME9021 or MPS3646
2N2270 DP63-6 22635-006
*Some earlier publications show Type No.
without the dash.
r:=;1=chlacements for the following items should be procured from
Datapulse:
DP46—1 is selected from ZN2964A for high Beta.
DP60—l is selected from 2N22894 for high V eco.
DP63-2 is selected from 2N914 for tighter Beta tolerancx
11/22/66
@fi’flfilw [LS a;
a galaxy of pulse instruments
r] l3
5 l r, r?
I ll
Model 101 85"W x 38"H X 11"D
Model llDl’PrA2
Model 110A
’\
Mndel
111
\
\
DATAPULSE/Pulse Generators
Dalapulse oflels a lull line 0' last pulse genevamrs.
Planning avallable lav all unils.
lnqnilies ale minted 0" Modifications a wide range ul rep.
rates and nulput powers.
Rllay rack mount and 115/230Vl 50/60 and special Iloulremenl s such as automallc Diagramming and multipulse systems, etc.
Eycle power is
Mom.
nzr. IATE nzuv nunnlnu “Bah?” nuvrur "no:
5H1 — souKl-lz to sons rise +35v, eaav open
1°“ (1 Mil: Ext. Trigger) Mus—looms UJpselDOms to dons tall cet. :1uv into 50:2 3345-00
101
min — 11mm
“IL 0' an" WI“ 40715 to 10m 35M to les
Typically
Gum? file“? lall
.
simultaneous :1av
IMO 509 5395.00
102 2”: — 3mm c.2os—1oms sons—loms £233: :50v into sun $720.00
102-511 le2 102 out otlers variety ol multipulse iormats.
31650.00
1025: Like 102 except also provides two pulses per cycle at rep rales to menu, witu separation variable lrom n.5ps to 10ms.
s 920m
102-55
Like 102 EXCGDX provides up [0 10m: delay or advance 0' main pulse and
Viva-tum control resolution
On delay.
‘Fully solld~statz instrument
.
n.1osesms, two uvtputs are provided by plugrln Output units (see below) ,
‘03” <5“! ‘ 5”” cnannels 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' luaL' loll: — 10MH2
1on1 _ 10ml:
D—Ems
U-Sms
<25nsesms
<3uns—5ms
Egg;
.inggr11:;='{2;2312‘gus
:sov inlo 5052
:sov into 5052
31450.00
51930.90
.
drlz v doMHz ions advance simultaneous
‘09 sgl. or dbl. pulse to sums delay 1°"S~5°m5 <5 "“05” :10v into 509 5690-00
1m-
111
.
‘NI - “7M"!
sgl. or dbl. pulse
4H2 - culling sgl. or dbl. pulse
10“ “Vince to sum delay
15ns advance to soms delay mns~5ms
“"5 ‘° 0'5"“ separately variable linear when“
-
Separately variable
-
""§,’,52{'§ 50:973..“ simultaneous
:luv into son no mm m 10v
:sv into 50:: be oflset to 5 volts
‘
1250.00
“"0”“ llDFP' llDFP-AZ‘
2
E m.
.
a
Incorporated in normz, also available separately, lor contml oi pulse amplitudes.
Allows attenuation to be varied "um 049.9 as in 0.1 on steps.
$920109
I2500.2ps -—_1599ms
Perla“
0—1593ms 0.1pse1593ms
T lane to 15v
5°“ ‘° 50V
Timing and amplitude automatically programmable from Ben logic level lines. liming derived lrom was-x, accuracy 1on clock.
1:0.1~50V
"“0 509 -
.
37210.00
$2530.00
$3590.00
Flavifles manual control ol programmed ionctions or allows programming lrom parallel logic lines 17! all parameters, including amplitude
Like 110A except allows remote control and/or automatic programming at all pulse parameters except amplitude.
l l a
$920.00
Modal 208-51
Model 201 835"W x 35"H x11"D
Model 200M
DATAPULSE/Digital Data Generators
Solid slate olf—the-snell digital 1:51 insllumenls Val high-speed simulated serial data, serlal wnms, and pulse prnglams lnr genelal 101i: and systems development and magnellc mummy and tape equipment destln and lesl.
Easlc units may he econominally madllted in! added channels lor special pmglam lingths.
MODEL clock I"!
szlun my“ lln. or cNANNElS
“ITS/cmuum nulrul' DTNEN rnrunzs rule:
2°°M ”H‘ZMHI
17100 or 1750 l 0' 2 Outputs are plavivded by
I ' .
sfllllgleibored Sgtl‘illnlallid $3710.00
will 5Hz—5MH1 is 2 y, f'""'f' out3‘1“: ”T15“ I fill-o '15? 2 c‘li'annli ET, '
Each cnannel may be delayed 0.1p575ms
$1720.00
trom clack.
101 [D lDMHl 16 l mmmmflffififlfiwm Provides RZ lormats when
[D 10V variable baseline
Dllsel '0 :10“ lllggellfl 1mm async~galed pulse genelalol.
$680.00
202M-Sl Like Model 202M except also providing single wold command capability and last bit sync output.
$2200.0D
1 too :sv ihn.(u so onms
Variable dela Disoms (or
NRZdnv vgria le {Adina bll $5700 00
20: 1°"! ‘° 20mm
7
0' 1‘50 1 °' 2 van; 2 duration
Ions to Snis or NRZ an W07 repea "ID ES, word command a. trame command, FCM mode,
.
205 2N172MN1
.
15 "led NUS hits or pair repeats
5 HZV "0'" 1.009
programmed lllggers
Selected SYNC»
1mm any combination
Of intervals
$3590.00
206M 2N172MHZ 17100 a lav trom mo oliins I 4 w'imfififllugfifie $7170.00
1 to 15 av into so olims , zoa 5N175MH1 plus variable repeats a Hz or MRI!)
Variable widtli optional
"‘m‘?‘ 0" "'EEEW
“‘8'? "3'"?
$5680.00
12 volts from SD ohms.
True and EOMDlEmEM lower level lrom 1 to valflls tor data
Dellurhalion and a rElEIEflCe data output (llxed nulpu!
Common data word may be externally programmed.
Special data word may be inserted in any word position except tne llrst.
variable amplitude and level l2 volts lrom 50 ohms).
DATAPULSE/PIug-ln Output Units
Daunulse solid state plugrln output unlls nmvlde a wide choice ol nulput chavacterisltcs flom a single basic lnslmment.
lncluding Very last use lime.
high flower, variable waveform.
selectable Dc levels, and audio signal modulation, Units are interchangeable, (Far use with Models 103M.
202M. arid 200M) m: DUIITWN RISE TIME
P901
P902
P903
P904
Simultaneous
:15v into 50::
Upper level 1 to 15V lower level 71 to
715v, trom 500::
3’52,“'.l,,’{2,°‘g‘a§_,
:15V or :5v into 50::
Current source, separate controls lei
:outpuls, culputs may be mixed.
tin-on modulates exlelnal
50ns-2ms or NRI'
“5‘50'95
0' "R1
52:5,fiz'1‘5
<02“ variable
<20—> anons
ADWDX-
0-1“
<5 nanosec.
<5“ MMSBCcarriers (to 20ltcl providing up to
15v p—D, trom suns) cutouts may be mixed lwo cnannels provided i.e., only 1 unit leq'd. tor two channel instrument
3570-00
$470.00
3270,00
$155110
5% wavefolm aberrations P905 50n5*500us (‘53:;‘1'91‘5 :zsv into 509 $610.00
.
. h .
P906 2ns—2nnns <lris mm mm 50:: $930.00
”0 ""Aéio‘lé‘ pillgge-lpllaiatllmpm“
'NRZ OUTPUT IS PROVIDED ONLY WHEN USED WITH MODELS 200M, 202M. ar 202M~SL nlJ‘l'PDT DTNER rmllltzs PRICE
PRlcEs AND DATA SUBJECT To CHANGE WIINauT NOTICE.
PRICES ARE DOMESTIC LIST, £03. CULVER cm, CALIFORNIA.
P902
DATAPULSE/Division of Datapulse Inc/10150 Jeffelson Blvd, Culver City, Calif
DATAPULSE NESCO INSTRUMENTS
KRS
P903 P904
@ATA@ M LE E
.90230/(213) 671-4334, 678-4275/TWX: 910-328-6109/Cable DATAFULSE
I INSTRUMENTS DE MORNAY-BONARDI 0 l
g.
g? T I“ T ‘0‘ ’03“ FA? 133‘ ”(T T ”N“ '3‘ LIAN Tm 3.93 m ‘H‘ TATAIATAKT ‘5"? I23
1
Io:
%;
WARRANTY
a; m; m: ft m:
7-: lo; lo: rot
Datapulse Incorporated warrants each instrument of its manu— facture to be free from defects in material and workmanship. Our obligation under this Warranty is limited to servicing or adjusting any instrument returned to our factory for that purpose, and to making good at our factory any part or parts thereof except tubes, transistors, fuses or batteries which shall, within one year after making delivery to the original purchaser, be returned to us with transportation charges prepaid, and which our examination shall disclose to our satisfaction to have been thus defective.
Instruments returned under this Warranty will not be accepted at the Datapulse plant without prior authorization by a
Datapulse representative or by the service manager of Datapulse
Incorporated.
Datapulse Incorporated reserves the right to make changes in design at any time without incurring any obligation to install same on units previously purchased.
This Warranty is expressly in lieu of all other obligations or liabilities on the part of Datapulse Incorporated and Datapulse
Incorporated neither assumes nor authorizes any other person to assume for them any other liability in connection with the sales of
Datapulse Incorporated instruments.
1V&V&VL?& LUV“! 1‘1 xfivfi'flfit 1. 1. 3.9V". £0. Fm ”filmy”! lvxlelWWPl.
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