Tektronix 7T11 Instruction Manual Download

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Summary of Contents for 7T11

Page 1: ...EASE CHECK FOR CHANGE INFORMATION AT THE REAR OF THIS MANUAL 7T11 SAMPLING SWEEP UNIT INSTRUCTION MANUAL Tektronix Inc P O Box 500 Beaverton Oregon 97077 Serial Number 070 0986 00 Product Group 42 First Printing MAY 1970 Revised MAR 1985 ...

Page 2: ... price change privileges are reserved INSTRUMENT SERIAL NUMBERS Each instrument has a serial number on a partel insert tag or stamped on the chassis The first number or letter designates the country of manufacture The last five digits of the serial number are assigned sequentially and are unique to each instrument Those manufactured in the United States have six unique digits The country of manufa...

Page 3: ...ettings 2 9 TIME POSITION Control 2 9 SCAN Control 2 10 TRIG LEVEL and STABILITY Controls 2 10 Trigger Pushbutton Switches 2 11 PULSE OUT Connector 2 11 Use of Real Time Mode 2 1 1 Using the 7M1 1 Delay Line 2 1 1 SECTIONS CIRCUIT DESCRIPTION THEORY OF OPERATION Real Time Sampling Theory 3 1 General 3 1 Staircase Ramp 3 2 Lead Time 3 3 Samples Division 3 3 Summary 3 3 Additional Real Time Circuits...

Page 4: ...ultivibrator HOMV Slewing Ramp Strobe Drivers Slow Ramp Generator Slow Ramp Inverter and Time Position Amp Dot Position Memory Ratemeter Ratemeter Start Correction Circuits Timing Switches Readout Logic MAINTENANCE Preventive Maintenance Troubleshooting Transistor and 1C Pin Arrangement 7T11 Troubleshooting Procedure Soldering Techniques Component Replacement Circuit Boards Pin Sockets and Connect...

Page 5: ...ckback into Trigger 5 20 Minimum Trigger Rate in Random 5 21 Repetition Scan Rate 5 21 Sweep Out Range 5 21 External Input 5 21 SECTION 6 ELECTRICAL PARTS LIST Abbreviations and Symbols Parts Ordering Information Index of Electrical Parts List Electrical Parts List SECTION 7 DIAGRAMS AND MECHANICAL PARTS ILLUSTRATIONS Diagrams Mechanical Parts Illustrations Accessories Repackaging Instructions SEC...

Page 6: ...7T11 ...

Page 7: ...ternal triggering can be selected by using the front panel pushbuttons A Schmitt trigger circuit is used except when HF SYNC is selected With EXT 50 Cl input selected the Schmitt circuit provides jitter free triggering from input trigger signals from DC to 1 GHz The display is free of trigger jitter or double triggering even at low trigger repetition rates or when using a square wave as the input ...

Page 8: ... Real Time 5 ms div to 1 jus div using the 50 ms to 5 ms Time Position Ranges ELECTRICAL CHARACTERISTICS cont Characteristic Performance Requirement SWEEP RATES cont Accuracy On 50 ms TIME POS RNG Within 3 beginning 250 is after undelayed sweep start On 5 ms TIME POS RNG Within 3 beginning 25 is after undelayed sweep start Fig 1 2 Several plug in configurations using the 7T11 and a 7000 series osc...

Page 9: ... P P DC to 1 GHz XIOTrig Amp 1 25 mV to 2 V P P 1 kHz to 50 MHz Safe Overload 2 V DC peak AC ELECTRICAL CHARACTERISTICS cont Characteristic Performance Requirement TRIGGERING cont 1 M12 Input Sensitivity Range XI Trig Amp 12 5 mV to 2 V P P DC to 100 MHz XI 0 Trig Amp 1 25 mV to 2 V P P 1 kHz to 50 MHz Safe Overload 100 V DC or 100 V P P to 1 kHz derated 6 dB octave above 1 kHz to 5 V P P HP SYNC ...

Page 10: ...flection factor for all 7000 series main frames ELECTRICAL CHARACTERISTICS cont Characteristic Performance Requirement HORIZONTAL DEFLECTION SYSTEM cont EXTERNAL INPUT Input Resistance 100 kl2 within 10 Deflection Factor Continuously variable from 10 V to 1 V div Maximum Input Voltage 100 V DC t peak AC SWEEP OUT tS V to 5 V MECHANICAL CHARACTERISTICS Dimensions Height 5 inches Width s 2 inches Le...

Page 11: ... panel of the plug ins Triggering signals travel between plug in units along 50 El coaxial or strip lines These signals travel between plug in units using contacts on connector strips fastened to the sides of the plug ins A connector strip is shown in the photograph of Fig 2 1 Since the strobe pulses also travel between a 7T1 1 and a 7S1 1 plug in through contacts on the connector strips these uni...

Page 12: ...nel is dis played on the CRT using the digits 1 2 or 5 followed by one or two zeros if required The TIME DIV readout does not use decimal points The displayed digits are followed by the units of measure readout With the 7T11 the units of measure displayed will be ms div jUs div ns div or ps div If the VARIABLE CAL IN switch is in the out position the symbol used to indicate less than is displayed ...

Page 13: ...f operation of the TIME DIV switch and indicates the corresponding time position range TIME POS RNG Permits a choice of any of nine TIME DIV settings at each of the seven posi tions of the SWEEP RANGE SWITCH The SWEEP RANGE con TIME DIV Switch VARIABLE CAL IN Control TIME POS RNG SWEEP CAL Control POSITION Control SWEEP OUT Jack SCAN Controls Variable SCAN Control REP Pushbutton trol is concentric...

Page 14: ...al Selects internal triggering for opera tion with sampling heads that pro vide a trigger pickoff Selects external DC coupled low impedance trigger operation at the common trigger input connector Selects external DC coupled high impedance trigger operation at the common trigger input connector Selects external AC coupled 1 MJ2 to ground HE SYNC operation In this mode of trigger operation the STABI...

Page 15: ...874 connectors between the Type 284 Square Wave or Sine Wave Output connector and the input connector of the Type S 1 Sampling Head 5 Set the controls as follows 7504 Right A Midposition High Fully CCW 7S11 Pushed in Midposition 200 Pushed in 7T11 TIME POSITION controls SEQUENTIAL pushbutton TIME POS RNG TIME DIV VARIABLE CAL IN control SCAN control Fully clockwise Pushed in 5 MS 5 Ms Div 500 ns r...

Page 16: ...at the pulse fol lowing the one producing triggering is displayed Either Internal or External triggering can be used By using the TIME POSITION control to move the displayed pulse near to the left graticule edge and turning the TIME DIV switch clockwise to a setting providing high magnification satis factory results can be obtained if the input signal has the proper characteristics The input signa...

Page 17: ...e 2 ns Div position 200 ps readout on CRT and use the TIME POSITION control to horizontally position the pulse leading edge to graticule center Note that the FINE control has more effect in moving the display as the TIME DIV control is set to its more clockwise positions Specified risetime of the Type S 1 350 ps is too slow to accurately measure the Type 284 output pulse risetime 70 ps If this ris...

Page 18: ...es The lowest usable triggering rate for any particular Time Div setting depends on the minimum dot density that the operator is willing to use In Random mode the sampling event referenced to a particular trigger is timed from the preceding trigger If the trigger rate is high and uniform then the sampling event prediction is more accurate and the samples occur where they are programmed to occur As...

Page 19: ...V settings 5 ms div to 10 is div are avail able Each of the six other positions of the SWEEP RANGE also offer a choice of nine TIME DIV settings The nine TIME DIV control settings determine the amount of display magnification See Fig 2 6 On all Sweep Ranges the display magnification changes from XI to X500 in a 1 2 5 5 sequence as the selected TIME DIV setting is changed from the slowest available...

Page 20: ...the scan rate increasing with CW rotation of the SCAN control Selecting MAN gives a single point of time on the screen or centers the distribution of samples around a point on the screen This control also provides a means of setting the SWEEP CAL adjustment for 10 centimeters of scan using a built in zener diode as a voltage reference EXT input allows the 7T11 to be driven from other sweep sources...

Page 21: ...ent time sampling is used to observe the higher frequency signals Since the faster real time TIME DIV settings are also available using equivalent time sampling at these TIME DIV settings the mode pro viding the best display is used The Real Time sampling display of the 0 2 V 1 kHz square wave output of the 7000 series oscilloscopes cali brator is shown in Fig 2 8 Few if any dots representing samp...

Page 22: ...need for a pretrigger or delay line The loss of input signal amplitude and increase in system risetime resulting from use of the delay line is eliminated in the Random mode The minimum triggering rate however is about 100 Hz during Random operation instead of the 10 Hz rate permissible during Sequential operation Either Internal or External triggering may be used ...

Page 23: ...ependent upon the selected TIME DIV setting The output of the Horizontal Amplifier is fed to the Hori zontal Memory circuit The Horizontal Memory circuit pro vides X2 amplification of the Horizontal Amplifier output The output ramp of the Horizontal Memory differs from the usual horizontal deflection signal in that it runs down in a series of voltage steps The output of the Horizontal Amplifier is...

Page 24: ...produces a linear ramp just as the time base generator in a conventional oscilloscope the ramp leaving the memory see Fig 3 3D is a staircase This is due to the sampling at regular intervals of the Horizon tal Amplifier output by the Horizontal Memory The out put of the Horizontal Amplifier is connected to the input of the Horizontal Memory only when a memory pulse is applied to the Memory Gate Th...

Page 25: ...st strobe varies in value from 0 us to 20 us so all parts of a repetitive signal will be sampled after a number of sweeps have occurred When a sweep occurs in which the first strobe is at trigger recognition Tq the triggering point of the signal will be displayed approximately 3 us after sweep start Unless the sweep repetition rate is very slow the persistences of the CRT phosphor and the viewers ...

Page 26: ...ks are Start Multivibrator Reset until the next memory gating pulse arrives approximately Comparator and HOMV hold off multivibrator Oper 17 is later The width of the memory gating pulse sets the ating controls shown on this block diagram are SWEEP lead time of the instrument During Real Time sampling RANGE TIME DIV and TIME POSITION this lead time is about 3 is For each triggering event one sweep...

Page 27: ... ramp changes by a factor of ten as the SWEEP RANGE control is rotated between positions Fig 3 5 shows the rate of change of the TTH output voltage for the three Real time Sweep Ranges It should be noted that a different time scale is used in Fig 3 5 for each of the ranges The second ramp is ten times as fast as the first and the third range provides a ramp that is ten times as fast as the second ...

Page 28: ...t of the TTH and the Horizontal Ampli fier is at zero and the Horizontal Memory output is at t 5 volts The dot is blanked The arrival of a trigger pulse starts the TTH running negative The Horizontal Amplifier still remains at zero until the TTH output voltage passes 2 5 volts its output then rises positive 1 volt per 2 ms The Horizontal Memory follows this amplified and delayed ramp in the form o...

Page 29: ...ired to switch the outputs of HOMV sections C and D Sections C and D will not switch however until both C inputs are at the required positive level The output of the Horizontal Amplifier does not start rising until 2 5 ms after Tq since the conditions stated on Fig 3 7 specify that 2 5 ms of time positioning is in use During the time interval from 2 5 ms to 7 7 ms after Tq the Horizontal Amplifier...

Page 30: ...nterval I I I I 1 I nput signal 500 Hz sine wave 2 Triggering Level control centered t Slope 3 TIME POS RNG 5 ms 4 TIME POSITION control set to mid position 2 5 ms 5 SWEEP RANGE set to 5 ms div to 1 ps div range 6 TIME DIV set to 5 ms div XI mag Fig 3 7 Ideal Trigger Sweep and HOMV waveform relationships during real time sampling 3 8 i ...

Page 31: ...tput of the Inverter is applied to the Slewing Comparator The TIME POSITION control introduces offset to the Slow Ramp Inverter input to compensate for the offset introduced into the Florizontal Amplifier by the Time POSITION control Unless this is done the TTH ramp could be stopped by the comparator before any change in voltage appeared at the output of the Florizontal Amplifier Slewing Comparato...

Page 32: ...HOMV Circuit Description 7T1 1 3 10 01 Fig 3 8 Simplified sequential equivalent time block diagram ...

Page 33: ...ches to its high state at time Tq the TTH and Slewing Ramps start running negative at the same rate The Slow Ramp is assumed to have started its run from 0 volts to tIO volts 25 000 ps previously and has completed 1 2 of its positive run The Slow Ramp out put is therefore t 5 0 volts At the control settings given above the horizontal amplifier gain is XI and therefore no attenuation is introduced ...

Page 34: ...Circuit Description 7T11 Fig 3 9 Ideal waveform relationships during sequential equivalent time sampling 3 12 1 ...

Page 35: ...0th of a division to the right of the previous dot at intervals of 25 ps until the Slow Ramp reaches its approximate MO volt limit When the Slow Ramp reaches MO volts the Reset Multi vibrator provides retrace blanking and resets the Slow Ramp to zero After a hold off interval the Slow Ramp can again be started Turning the TIME POSITION control fully CCW affects the waveforms of Fig 3 9 as shown in...

Page 36: ...intervals along the TTH ramp With the TIME DIV control at a setting providing X10 Horizontal Amplifier gain only 0 5 volts of the TTH ramp is used to produce 10 divisions of horizontal deflection In order to maintain the dot density 1000 samp es sweep was assumed samples must be taken at 0 5 1000 0 5 mV intervals along the TTH ramp rundown This is accomplished by reducing the rate of change of the...

Page 37: ...obe pulse is delivered to the sampling bridge at this in stant time Tq none of the leading edge of the input pulse is displayed The display window has been shifted to the right since its start is delayed by the same amount as Tq lags the triggering level If the Slow Ramp is at zero the Comparator should produce a strobe pulse at time Tq for delivery to the sam Fig 3 12 Unavoidabie delay between tr...

Page 38: ...osite to that produced by the Time Position control Rotation of the Time Posi tion control CCW increases the delay between trigger recog nition time Tq and the start of the display window Lead time however moves the display window in the opposite direction The effect of lead time is evident if the position of the display window is compared in Fig 3 12 and 3 13 During Random mode operation a lead t...

Page 39: ...Circuit Description 7T1 1 1 3 17 Fig 3 14 Random mode block diagram ...

Page 40: ...art decision with the needed accuracy the Start Correction Memory and DC cor rection circuits are added The comparator in the Ratemeter Correction block of Fig 3 14 checks the output level of the TTH after it has been told to stop by both stop inputs It compares this level plus a DC offset against the level of the Slow Ramp Inverter output The comparator operating on the output of the TTH uses the...

Page 41: ...eter Input in Fig 3 15 is at its higher level during the same interval of time that the Trigger Output TD is at its higher level When the Trigger Output TD goes to its high level at time Tq a positive going pulse is fed to the Tq Gate of the Ratemeter When the Trigger Output TD switches back to its low level the negative going portion of the Ratemeter Input wave form causes reset of the Ratemeter ...

Page 42: ... such is not the case If for example 50 ns is required for the strobe pulse to travel to the sampling bridge the first sample displayed is actually taken only 25 ns before Tq CIRCUIT ANALYSIS During the following discussion of the 7T11 circuits refer to the block diagram and the appropriate schematic at the rear of this manual These diagrams as well as the fig ures referred to in this section will...

Page 43: ...Circuit Description 7T1 1 1 3 21 Fig 3 17 Block diagram showing Interconnections between 7T1 1 and vertical plug in during real time operation ...

Page 44: ... Schmitt Trigger is fed to the Arming and Output tunnel diodes The Output Tunnel Diode CR152 if ready to recognize a trigger pro vides a fast trigger signal to start the TTH ramp and the HOMV cycle The 1 Meg Amplifier shown in Fig 3 18 is used only if the EXT 1M triggering mode is selected The XI 0 Amplifier is available on all triggering modes except HF SYNC Internal Triggering When internal trig...

Page 45: ... the rear of this manual and are represented in block dia gram form in Fig 3 19 In Fig 3 19 the low resistance shunting the left channel trigger pickoff and the input of Q36 reduces the level of this trigger signal below the level required to forward bias Q36 Pressing the INT trigger pushbutton on the left chan nel vertical plug in causes the multivibrator to change state The shunting resistance i...

Page 46: ...t of the X10 Amplifier Q82 and Q92 form a high speed inver ting amplifier The amplified and inverted output of this amplifier is fed to the other input of the Slope Amplifier giving an effective boost to the gain especially for trigger risetimes of greater than a few nanoseconds The input trigger is applied to the base of Q82A The signal appearing across the emitter resistor R88 serves as the inpu...

Page 47: ...ect opposite to that produced by an increase in tunnel diode current The forward bias of Q128 increases and a larger portion of Q122 current flows through Q128 causing A i tunnel diode current to move from point 2 on Fig 3 21 to point 3 With the tunnel diode current set to a value just greater than ly removal of the small triggering current causes the tunnel diode to switch back to the low voltage...

Page 48: ... disables the 200 MHz oscilla tor and Q32 disables the 10 MHz oscillator Pushing in the HF SYNC pushbutton removes the ground applied through R26 from the base of Q26 With the HF SYNC selected the tunnel diode oscillators free run except when a negative pulse is applied to the base of Q26 through R178 This negative pulse is applied when the Arming and Output tunnel diodes CR142 and CR152 of Fig 3 ...

Page 49: ...ignals to a number of other providing a 5 ns delay circuits as shown in Fig 3 23 In order for a small trigger signal to switch the output Output tunnel diode CR152 controls the state of the tunnel diode to the high state the arming and output tun transistor differential pair 0162 and 0164 This circuit nel diodes OR 142 and CR152 respectively must first have 3 27 ...

Page 50: ... CR142 to its high state Switching CR142 to its high state increases the current through CR152 by about 3 mA Tbe output tunnel diode is now fully armed and will switch to its high state as soon as the trigger that switched CR142 reaches it through the 5 ns delay line Output T D Circuits Refer to Fig 3 23 and 3 24 as well as the Trigger and Hold off schematic at the rear of this manual Trigger Puls...

Page 51: ...istor Q304 of the Slewing Ramp and 1 Real Time retrace blanking logic to Q244 The Slewing Ramp is used only during equivalent time sampling Transistor Q230 receives drive from either the Trigger Circuit by way of grounded base stage Q216 or from the Ratemeter The Ratemeter controls the Start Multivibrator only during Random sampling The input from the Rate meter is disabled in either Sequential Mo...

Page 52: ... used The ratio of gate drain to feedback capacitance is large for this range TTH Circuit The Time to Height Converter is the key timing circuit in the 7T1 1 It is essentially a Miller integrator formed by transistors Q280 and Q284 and feedback capacitors switched by the Sweep Range control Fig 3 25 shows two outputs from the TTH Ramp Gen erator One output is fed to Q446 of the Ratemeter Correc ti...

Page 53: ...d 0234 to conduct During Random operation the Ratemeter nor mally provides a negative pulse to the base of 0230 to turn on the Start Multivibrator However in the event that a trigger does occur before the Ratemeter delivers a start sig nal to 0230 the Start Multivibrator will be turned on by the output of 0216 When 0234 turns on a negative pulse is developed at its collector The negative pulse fro...

Page 54: ...relationship CV t Where t time in seconds C value of feedback capacitance in farads I input current in amperes V change in TTH output voltage At the fastest sweep rate the TTH output does not move fast enough to keep up with the amount of charge being delivered to it by the 5 mA current source Without capaci tor C264 this lag in the TTH output would result in a change in voltage at the TTH input a...

Page 55: ...2A of the Horizontal Amplifier Time positioning current is injected at the input of U512A to offset the dynamic range of the amplifier See Fig 3 28 Time positioning permits the Horizontal Amplifier to amplify different portions of the TTH output The TIME POSITION control permits the start of the displayed sweep to be delayed after trigger recognition by an amount dependent upon the setting of the ...

Page 56: ... Q362 through R362 to the base of Q368 This enables Q368 and provides interdot blanking for a 3 ps interval The Real Time Multivibrator consists of transistors Q352 Q356 and Q362 During real time operation transistor Q326 conducts clamping Q328 so that no outputs come from this source Also during real time operation the shield of the coaxial line to the right channel vertical unit is disconnected ...

Page 57: ... C566 tends to slow down the response of the Horizontal Memory circuit The response is determined by the 100 ns RC time of C566 and R558 A 2 or 3 MS wide memory gate drive pulse is used to insure 100 sampling efficiency When the gate pulse ends and causes the FET gate to stop conducting the Horizontal Amplifier and feedback resistor R558 are disconnected from the input Memory capacitor C566 retain...

Page 58: ... inverters The quiescent state of the gates is as follows The output of Gate A is 0 volts B is 4 volts C is 4 volts and D is 0 volts Inputs 1 and 2 of Gate A are both above 2 volts due to the positive voltage at the junction of R174 and R176 The voltage at this junction reverse biases Q102 and forward biases Q104 With Q102 reverse biased input 1 isopen and this input will pull itself up to a posit...

Page 59: ...d This disables the HF Sync oscillator The signal at the collector of 0174 is also applied through 0194 to 0196 As explained earlier none of the four types of blanking can produce blanking unless 0196 is turned on Real time retrace blanking is disabled at this time due to conduction of 0234 in the Start Multivibrator Interdot blanking is not active at time Tq unless a strobe pulse happens to occur...

Page 60: ...Circuit Description 7T11 Fig 3 30 Trigger Sweep and HOMV waveform relationships during real time sampling 3 38 ...

Page 61: ...plied to the base of 0546 Horizontal Memory Gate circuit as a conduction command during equivalent time sampling The switching of Gate A output from 0 volts to 4 volts shuts off input current to pin 10 of Gate C due to reverse biasing of CR106 Within about 2 ids the voltage at pin 10 of Gate C see Fig 3 31 rises to the approximate 1 5 volts required to cause switching of Gates C and D The requirem...

Page 62: ...Circuit Description 7T1 1 Fig 3 31 Typical waveform relationships during sequential equivalent time sampling 3 40 ...

Page 63: ...rt pulse is de livered to the TTH gate of Q294 by the Start Multi vibrator at the same time as the Slewing Ramp is started Also the TTH does not always run negative as it does during real time and sequential operation Other than the two exceptions just pointed out the summary below applies to all modes of sampling To summarize both the TTH and Slewing Ramps are started at the same time by 0234 Sta...

Page 64: ...on of 0626 latches 0628 ON so that neither positive nor negative going pulses from the HOMV will change the state of 0628 during the remainder of the slow ramp run up Conduction of 0626 also shuts off Gating transistor 0620 permitting the start of the slow ramp run up and turns on transistor 0662 thereby removing slow ramp retrace blanking of the CRT The Slow Ramp Generator output voltage collecto...

Page 65: ...lector of Q636 is con nected to the gate of the left section of Q616 When the MAN SCAN pushbutton is pushed in Q616 and Q636 of the Slow Ramp Generator function essentially as a high impedance voltage follower The output voltage of U602 still appears across the SCAN potentiometer R610 Voltage picked off by the moveable contact of the SCAN control is applied to the right section of Q616 The output ...

Page 66: ... the schematic at the rear of this manual set to the posi tion producing zero attenuation This same condition TIME DIV at XI Mag setting is represented in Fig 3 33 where only R585 is connected to the Slow Ramp Inverter input The 0 5 gain set by ratio or R594 to R585 of the Slow Ramp Inverter results in a positive 5 volt change at the Slow Ramp Generator output appearing as a 2 5 volt change at the...

Page 67: ...osition Memory input and the TTH will be stopped earlier than normal Transistor Q644 is provided to disable gating transistor Q650 during Slow Ramp retrace Ratemeter The purpose of the Ratemeter see Fig 3 34 is to start the displayed portion of the sweep before a trigger arrives thus permitting time before triggering to be displayed The Ratemeter estimates when the next trigger will occur by measu...

Page 68: ...ied by Q184 This pulse coincides in time with the time during which the Trigger Output TD CR152 is reset to the low state The negative going por tion of this pulse is fed through C402 to the base of the Reset Multivibrator Turning on the Reset Multivibrator dis charges the negative charge on C411 C412 and C414 Discharge of C411 and C412 occurs through the low resistance path offered by CR411 and C...

Page 69: ...Zero adjustment R440 provides the 1 2 TPR time positioning range of leadtime introduced during the Random Mode of operation An additional 50 ns of leadtime is introduced at the fastest Sweep Range setting by the input through R443 The TTH and Slow Ramp inverter inputs provide correc tion if the TTH and Inverter output voltages do not differ by the correct amount for the intended leadtime If the ou...

Page 70: ...hrough R752 and R755 The effect of closing con tact 3 of the Sweep Range switch and contacts 17 and 19 of the TIME DIV switch can be determined by consulting Table 3 2 Reference to Table 3 2 indicates that during time slot 1 closing of contacts 3 and 19 causes the instruction reduce prefix to be stored by the oscilloscope readout circuit Table 3 2 also indicates that during time slot 4 the number ...

Page 71: ... soft paint brush or a cloth dampened with a mild detergent and water solution A cotton tipped applicator is useful for cleaning in narrow spaces on circuit boards REV B JAN 1981 Lubrication The reliability of potentiometers switches and other moving parts can be maintained if they are kept properly lubricated However too much lubrication is as detrimental as too little lubrication A lubrication k...

Page 72: ... common disc capacitors and small electrolytics are marked in micro farads on the side of the component body The white ceramic capacitors used in the 7T11 are color coded in picofarads using a modified EIA code see Fig 4 1 Diode Color Code The cathode end of each glass encased diode is indicated by a stripe a series of stripes or a dot For most silicon or germanium diodes with a series of stripes ...

Page 73: ...NFIGURATIONS AND CASE STYLES ARE TYPICAL BUT MAY VARY DUE TO VENDOR CHANGES OR INSTRUMENT MODIFICATIONS D D E C C E C T I j Plastic Cased Transistors Analog Logic Board Sockets idex Integrated Circuits Fig 4 2 Transistor and integrated circuit pin and socket arrangement flPMl fM if REV JAN 1982 ...

Page 74: ...ightly between instru ments To obtain operating conditions similar to those used to take these readings see the first dia gram page 7 Check Individual Components The following pro cedures describe methods of checking individual com ponents in the 7T11 Components which are soldered in place are best checked by first disconnecting one end This isolates the measurement from the effects of surrounding...

Page 75: ... to the indi cator and connect the 7T11 to the oscilloscope via an ex tender plug in order Calibration Fixture Tektronix Part No 067 0589 00 Connect J334 7T11 and J430 7S11 using the RF Cable Assembly Tektronix Part No 012 0203 00 Turn the power on Check power supply voltages including the 10 volt refer ence supply provided by U602 Check trigger selection circuit for proper operation Check reed sw...

Page 76: ...ontal Amplifier I Horizontal Memory Gate Driver m Horizontal Memory the memory gate balance pot may now be set n Output Amplifiers o Dot Position Memory Once the output amplifiers have been checked reconnect the 510 f2 resistor Check Time To Height Converter output Switch the Mode from Sequential to Random Set TIME POSITION RANGE to 5 ysec or 50 ysec Set the TIME POSITION pot CCW Use the test osci...

Page 77: ...nt lead with long nose pliers Touch the soldering iron to the lead at the solder connec tions Do not lay the iron directly on the board as it may damage the board 2 When the solder begins to melt pull the lead out gently This should leave a clean hole in the board If not poke a sharp object such as a toothpick into the hole to clean it out A vacuum type desoldering tool can also be used for this p...

Page 78: ...e pin into the old ferrule and solder the pin to both sides of the ferrule If it is necessary to bend the new pin grasp the base of the pin with needle nose pliers and bend against the pressure of the pliers to avoid breaking the board around the ferrule Circuit Board Pin Socket Replacement The pin sockets on the circuit boards are soldered to the rear of the board To replace one of these sockets ...

Page 79: ...ias current setting providing a stable display at all settings of the Stability control Reducing the tunnel diode bias cur rent increases the oscillator frequency range Adjustment of RIO is explained in Section 5 of this manual The frequency change provided by the Stability and Trigger Level controls must be at least the amount shown in Fig 4 4 if the oscillator frequency is 220 MHz with the Stabi...

Page 80: ...mation or assistance on maintenance of the cam switch contact your local Tektronix Field Office or representative A CAM TYPE SWITCH The cam type switch TIME DIV consists of a rotating cam which is turned by the front panel knob and a set of contacts mounted on an adjacent circuit board These switch contacts are actuated 4 10 i ...

Page 81: ... of the pushbutton switches 1 Loosen the set screws and remove all the front panel knobs 2 Remove any other nut or part holding the front panel to the instrument 3 Remove the front panel to gain access to the switch mounting screws 4 To remove any of the pushbutton switches remove the Phillips head screws from each of the switches to be re moved Unsolder and remove any wire connected to the switch...

Page 82: ...t R222 Elk gy on wht 0506 collector 2 BIk vio 15 V 2 BIk Ground 1 a I 3 RANDOM SEQUENTIAL B RANDOM SEQUENTIAL SWITCH 2 Brn orn A9 5 V Lamp Brn yel Q734 collector Vio wht scan pot R610 2 Brn red 15 V Red wht 10 V Brn wht Q608 collector BIk Ground Red grn on wht Q616 gate Blu wht Ext Input Red gy on wht R611 and R610 wiper Lamp Connections U Mf EXT INPUT C SCAN SWITCH Fig 4 5 Connections to circuit ...

Page 83: ...tions HP SYNC Grn wht J641 Pin 5 Red blu on wht P129 Pin 1 Red vio on wht P129 Pin 2 Red orn on wht Q714 emitter Red wht Blu wht PI 29 Pin 3 Gy wht P129 Pin 5 Vio wht R724 Base Q724 2 BIk Ground 2 BIk red A8 2 Orn brn A9 Red brn on wht A14 Lamp Connections EXT Trigger Switch Right side Fig 4 6 Connections to circuit boards of the TRIGGER AMP and INT EXT switches and connector J641 4 13 ...

Page 84: ...0000 See Parts List for serial number ranges Grn wht L812 changed to R812SN B110000 C819 added to back SN 8050000 C140 Added to back of board Fig 4 7 Trigger Circuit board front view showing location of components and connector color coding 4 14 ...

Page 85: ...3 WSV R358iign5 CR 358 0356 IC349JISPEQ lR348 ji2P fe CHl LC Q514 Br573 53 ra 2M R510 io3R536 15 PR5h7 v Sr2 P n Q242j R 5 08 S lu jR260WR SiMg f EH JR213 1 v C26r MMc2 i C346 0344 A iN fV iR344f 00 i i 344l mnyK a a iv to 4 uH ililV iC t L3 CC r Q2o2f fsj y po iQR227 Q S a gi Q304R g PJ 82 0 K R243fl llQSIsgof SJR30_1 N CR2 W CR305 R304 j JI E308 CR234 i R3d8 fSl TC312 n R J344 Q280 Bp J T VR299 ...

Page 86: ...6I CR316 located on back Optional 100M added if required Added SN B080000 R368 changed to CR368 SN B080000 R508 located on back Fig 4 8B Timing Circuit board front view showing location of components and connector color coding SN below B 120000 4 16 ...

Page 87: ...2 fiSfifoteRsobrit DM I BM R651 OC P636 fVkA jT650lS R645tr I Q656 ttW BO i olnm4r 652 gr I SiiSs SS i I W Tp rBII t R671 I I 14r t Z2l S r674 4 wm IS Z0j R672LL 3 f R57TtTTR57_4 g S S gR577 NV I r R576 S Bg li 0 if fc s rc 7RC f iBG I CC Q Mi 4 erseo s a s C H 5871 K U R584 J RF BF CR59V Sbc bd S 588C f R597 jS 2I1 5 S _3 CR596 j 5lg S H V CR597 C C592 added to back SN B 100000 C674 added to back...

Page 88: ...Maintenance 7T1 1 Fig 4 10 Interface Board left side showing location of components and wire color coding 4 18 ...

Page 89: ...Maintenance 7T1 1 Fig 4 1 1 Interface Board right side showing location of components 1 4 19 ...

Page 90: ......

Page 91: ...shown in this procedure were taken with a Tektronix Oscilloscope Camera System Limits tolerances and waveforms in this procedure are given as calibration guides and should not be in terpreted as instrument specifications except as specified in Section 1 TEST EQUIPMENT REQUIRED Genera The following test equipment and accessories or equivalent are required for complete calibration of the 7T11 Specif...

Page 92: ... supplied with the 7T1 1 19 Extender rigid Tektronix Calibration Fixture 067 0589 00 or Extender flexible Tektronix Calibration Fixture 067 0616 00 20 Special cable assembly RF about 36 inches in length with coaxial connectors Tektronix Part No 012 0203 00 21 5 16 inch wrench such as Armstrong No 1120 Tektronix Part No 003 0260 00 22 Screwdriver Three inch shaft 3 32 inch blade width for slotted s...

Page 93: ...on 7T1 1 11 Adjust HF Sync RIO and R30 Page 5 13 10 MHz signal at junction of R34 L33 kickout pulse repetition rate between 205 MHz and 245 MHz with fully counterclockwise settings of TRIG LEVEL and STABIL ITY controls increasing by 25 at fully clockwise settings 12 Adjust Output Bias R155 and Arming Page 5 14 Bias R 145 Arming Bias R145 adjusted counterclockwise until the pulse is stable with the...

Page 94: ...en in this procedure Refer to the instruction manual for the test equipment if more information is required NOTE Many tolerances given in this procedure are guides to correct instrument operation and are not instrument specifications Performance Check Install the 7A13 in the Oscilloscope Left Vert compart ment the 7S11 with the Sampling Head installed in the Right Vert compartment the 7T1 1 in the...

Page 95: ...Performance Check Calibration 7T1 1 ...

Page 96: ...ry Control Settings 7504 Oscilloscope Vertical Mode A Trigger Source Horizontal Mode B Trigger Source Left Right B Left Vert Other controls may be in any position Set the Intensity and Focus controls for a well defined trace or display 7A13 Differential Comparator 7T11 Sampling Sweep Unit TIME POSITION SLOPE TRIG LEVEL STABILITY SEQUENTIAL TRIG AMP SWEEP RANGE TIME DIV EXT SCAN Fully clockwise Mid...

Page 97: ...rew driver adjustment for 0 5 division range e Turn the SCAN control fully counterclockwise to set the spot at the 0 graticule line and check the SWEEP CAL control for 0 5 division range f Turn the SCAN control so the spot is at the center of the graticule g Check the POSITION control front panel screw driver adjustment for a one division range h Set the SWEEP CAL and POSITION controls so the spot...

Page 98: ...the tolerance at the TIME DIV switch positions and compare to the SWEEP RANGE switch positions d Check that the algebraic sum of the tolerances at all settings of the TIME DIV and SWEEP RANGE switches are within 3 0 24 division measured over 8 divisions e Push in the SEQUENTIAL switch Set the SWEEP RANGE switch to 50 Js and the TIME DIV switch to 0 5 ys Apply 1 ys markers and observe 1 marker per ...

Page 99: ... 5 2 TIME POSITION Range Checks SWEEP RANGE TIME DIV Input signal Marker or markers to move through reference position Tolerances 5 0 9 50 ns 2 ns 10 ns 5 cycles 2 5 ns 45 ns 5 ps 10 ns 50 ns 10 cycles 25 ns 4 5 ns 5 ps 1 MS 0 5 MS 10 markers 25 MS 45 ns 50 ps 1 MS 5 MS 10 markers 2 5 ms 45 MS 10 MS 50 MS 10 markers 25 ps 4 5 ps 1 ms 5 ms 10 markers 25 ms 45 MS 50 ms 1 ms 5 ms 10 markers 2 5 ms 45...

Page 100: ...on 5 6A and check that the beginning of the trace is no longer blanked the trace is visible to the left of the grati cule 6 Adjust R500 R550 R310 C313 O R588 C237 R440 and R645 a Set the SWEEP RANGE switch to 50 ms d Replace Q668 R586 Q66S Servo Zero Dot Position Memory Memory Gate Bal Rate Servo Zero 50 ns Slewing R310 Slewing Ramp R260 Fast Timing Gate Compensation C292 50 ns Timing R265 Slow Ti...

Page 101: ...sions r Set the SWEEP RANGE switch to 50 ys and the TIME DIV switch to 2 ys Check that the trace is centered on the graticule s Adjust Servo Zero control R588 on the Analog Logic Board to align the trace to the graticule within a half a division at TIME DIV switch settings of 5 ys 2 ys and 1 ys Use a compromise setting of R588 that results in the least movement of the display when switching betwee...

Page 102: ...trol for no trace movement with changes in SLOPE The TRIG LEVEL control should be pointing at 12 o clock dot straight up If slightly off loosen the alien nut position the knob so the dot is straight up and tighten the alien nut If the control is considerably off Q62 and Q72 do not pull equal currents and one or both must be changed f Set the Oscilloscope Vertical Mode switch to Right and the Horiz...

Page 103: ... the IX probe and connect the 10X probe to the 7A13 lnput d Connect the 10X probe to the junction of R34 L33 e Obtain a stable display and check for a pulse repetition rate of about 10 MHz between 5 MHz and 15 MHz is acceptable See Fig 5 8 f Adjust the Sync Countdown control R30 for a 10 MHz repetition rate Performance Check Calibration 7T1 1 Fig 5 8 Typical displays for HF Sync adjustments g Remo...

Page 104: ...he adapter and connect the BSM end of the cable to the S 50 PRETRIG OUT connector f Set the 7T1 1 SWEEP RANGE to 50ns and the TIME DIV to Ins Push the SEQUENTIAL switch r SLOPE switch and the EXT 50J2 2V MAX switch Set the STABILITY control fully counterclockwise g Adjust the TIME POSITION control to view the leading edge of the pulse Set the TRIG LEVEL for the least pulse jitter h Turn the Arming...

Page 105: ...the input of the Type S 1 Sampling Head During the following checks adjust the 7T11 Stability and Trig Level controls to check for stable triggering On Real Time ranges the Time Position control also aids in stabilizing trig gering Use Table 5 3 to check that the triggering requirements of the 7T1 1 are met This table shows the required control settings the signal source and signal frequency and a...

Page 106: ... the coaxial cable from the oscillator at the input to the Type S 1 Sampling Head Connect a T connector having GR connectors to the Type S 1 and reconnect the coaxial cable from the oscillator to one of the T connectors Connect the other connector of the T through a 10X attenuator and a 50 coaxial cable with GR connectors to the TRIG INPUT connector of the 7T1 1 2 Remove the 10X attenuator from th...

Page 107: ...the TIME POSITION STABIL ITY and TRIG LEVEL controls to maintain the most stable display of the pulse leading edge c Set the 7S1 1 to a 2 mV Div position and use the DC Offset and TIME POSITION controls to keep the pulse leading edge visible d While maintaining as stable a display as possible rotate the TIME DIV control to the 10 ps Div position and check for less than 10 ps of jitter as shown in ...

Page 108: ...xial cable Tektronix Part No 012 0127 00 and a GR to BNC adapter Tektronix Part No 017 0063 00 to INPUT 1 of the 7M1 1 DELAY LINE Check display jitter under the conditions shown in Table 5 4 d Connect OUTPUT 1 of the 7M1 1 to the input of the Type S 1 sampling head Use a Tektronix Type 191 Signal Generator or an equivalent instrument that provides suitable output fre quency and voltage Carefully a...

Page 109: ...Fig 5 11 Typical display of the Pulse Out waveform f Disconnect the signal cable Push in the 7S1 1 Variable control 17 Check Trigger Kickout a Connect the 7T 1 1 TRIG INPUT connector to a 3 mm to GR874 adapter and GR874 coaxial cable to the Samp ling Head input connector b Turn the TIME POSITION controls fully clockwise and set the TIME DIV switch to 5 ys c Set the 7S11 mVolts Div switch to 2 push...

Page 110: ...the Oscilloscope Vertical Mode switch to Right and the Horizontal Mode switch to A c Check the display for trigger hoidoff times as given in Table 5 5 Hoidoff is the time between the leading positive going portions of adjacent trigger pulses See Fig 5 13 Reset the 7B50 Time Div switch as required d Set the SWEEP RANGE switch to 5 ys the TIME DIV switch to 5 ys and the TIME POSITION controls fully ...

Page 111: ...B50 Mode switch at P P Auto Set the 7A13 Volts Div switch to 2 and push in the GND Hnput switch Position the trace at the center graticule line b Set the 7A13 t Input switch to DC c Push in the SCAN MAN switch and check that the trace on the 7A13 is at t 5 volts with the SCAN control fully counterclockwise d Turn the SCAN control fully clockwise and check that the trace is at 5 volts 23 Check Exte...

Page 112: ...NOTES ...

Page 113: ...ll contact you concerning any change in part number Change information if any is located at the rear of this manual SPECIAL NOTES AND SYMBOLS XOOO Part first added at this serial number OOX Part removed after this serial number ITEM NAME In the Parts List an Item Name is separated from the description by a colon Because of space limitations an Item Name may sometimes appear as incomplete For furth...

Page 114: ...8 ELECTRO CONTROLS INO MATTHEWS AVE 56289 SPRAGUE ELECTRIC CO 87 MARSHALL ST 57668 R OHM CORP 16931 MILLIKEN AVE 59660 TUSONIX INC 2155 N FORBES BLVD 59821 CENTRALAB INC SUB NORTH AMERIOAN PHILIPS CORP 7158 MERCHANT AVE 71590 CENTRALAB ELECTRONICS DIV OF GLOBE UNION INC P 0 BOX 858 72982 ERIE TECHNOLOGICAL PRODUCTS INC 644 W 12TH ST 73138 BECKMAN INSTRUMENTS INC HELIPOT DIV 2500 HARBOR BLVD 74868 ...

Page 115: ...4 CKT BOARD ASSY TIMING 80009 670 1119 09 A 670 1119 10 B222995 B229999 CKT BOARD ASSY TIMING 80009 670 1119 10 A 670 1119 11 B230000 B243233 CKT BOARD ASSY TIMING 80009 670 1119 11 A 670 1119 13 B243234 CKT BOARD ASSY TIMING 80009 670 1119 13 A 670 1120 00 B010100 B019999 CKT BOARD ASSY TRIGGER 80009 670 1120 00 A 670 1120 01 B020000 B049999 CKT BOARD ASSY TRIGGER 80009 670 1120 01 A 670 1120 02 ...

Page 116: ...CAP FXD CER DI 0 2UF f 80 20 25V 56289 274C3 C654 283 0164 00 B030000 CAP FXD CER DI 2 2UF 20 25V 04222 SR402E225MAA C674 283 0115 00 B060000 CAP FXD CER DI 47PF 5 200V 59660 805 51 9 C0G0470J C675 283 0197 00 B010100 B059999 CAP FXD CER DI 470PF 5 100V 72982 8121N075C0G0471J C675 283 0197 00 B060000 B222994 CAP FXD CER DI 470PF 5 100V 72982 8121N075C0G0471J C675 NOMINAL VALUE SELECTED C675 283 03...

Page 117: ... FILMi10K OHM 1 0 125W 91637 MFF1816G10001F R581 321 0298 00 RES FXD FILMi12 4K OHM 1 0 125W 91637 MFF1816G12401F R582 321 0356 00 RES FXD FILMi49 9K OHM 1 0 125W 91637 MFF1816G49901F R583 321 0310 00 RES FXD FILMi16 5K OHM 1 0 125W 91637 MFF1816G16501F R584 321 0327 00 RES FXD FILMi24 9K OHM 1 0 125W 91637 MFF1816G24901F R585 321 0289 00 RES FXD FILM1IOK OHM 1 0 125W 91637 MFF1816G10001F R586 317...

Page 118: ... BB1035 R667 321 0361 00 RES FXD FILM 56 2K OHM 1 0 125W 91637 MFF1816G56201F R668 321 0277 00 RES FXD FILM 7 5K OHM 1 0 125W 91637 MFF1816G75000F R669 317 0472 00 RES FXD CMPSN 4 7K OHM 5 0 125W 01121 BB4725 R670 317 0103 00 RES FXD CMPSN 10K OHM 5 0 125W 01121 BB1035 R671 317 0102 00 RES FXD CMPSN 1K OHM 5 0 125W 01121 BB1025 R672 317 0104 00 B010100 B029999 RES FXD CMPSN 100K OHM 5 0 125W 01121...

Page 119: ...ER Dli10PF 5 200V 96733 TDR43BY100DP C234 283 0175 00 CAP FXD CER Dli10PF 5 200V 96733 TDR43BY100DP C237 281 0122 00 CAP VAR CER Dli2 5 9PF 100V 59660 518 000A2 5 9 C251 283 0140 00 CAP FXD CER Dli4 7PF 5 50V 72982 8101E003A479C C253 283 0140 00 CAP FXD CER Dli4 7PF 5 50V 72982 8101E003A479C C261 283 0121 00 CAP FXD CER DliO OOl UF 20 200V 56289 40C73A5 C263 283 0121 00 CAP FXD CER DliO OOl UF 20 ...

Page 120: ...9821 2DDH66J103Z 3509 283 0204 00 B050000 CAP FXD CER DI 0 01UF 20 50V 96733 R2676 C512 283 0196 00 CAP FXD CER DI 270PF 10 50V 72982 8101B057X7R0271K C518 283 0196 00 CAP FXD CER DI 270PF 10 50V 72982 8101B057X7R0271K C551 283 0642 00 CAP FXD MICA D 33PF f 0 5PF 300V 00853 D10 5E330G C555 283 0196 00 B 150000 CAP FXD CER DI 270PF 10 50V 72982 8101B057X7R0271K C566 283 0182 00 CAP FXD CER DI 51PF ...

Page 121: ...50MA 01295 1N4152R SEMICOND DEVICE SILICON 30V 1 SOMA 01295 1N4152R SEMICOND DEVICE SILICON 30V 150MA 01295 1N4152R SEMICOND DEVICE SILICON 30V 150MA 01295 1N4152R SEMICOND DEVICE GERMANIUM 15V 40MA 15238 G865 SEMICOND DEVICE SILICON 30V 150MA 01295 1N4152R SEMICOND DEVICE SILICON 30V 150MA 01295 1N4152R SEMICOND DEVICE GERMANIUM 15V 40MA 15238 G865 SEMICOND DEVICE SILICON 15V HOT CARRIER 50434 50...

Page 122: ...RANSISTOR SILICON PNP 07263 S036228 0514 151 0225 00 B010100 B019999 TRANSISTOR SILICON NPN 07263 S39291 0514 153 0588 00 B020000 TRANSISTOR 2N3563 FAMILY SELECTED 80009 153 0588 00 0524 151 0225 00 B010100 BO 19999 TRANSISTOR SILICON NPN 07263 S39291 0524 153 0588 00 B020000 TRANSISTOR 2N3563 FAMILY SELECTED 80009 153 0588 00 0542 151 0164 00 TRANSISTOR SILICON PNP 01295 SKB3334 0544 151 0207 00 ...

Page 123: ...ES FXD CMPSN 100 OHM 5 0 125W RES VAR NONWIR TRMR 200K OHM O SW RES FXD FILM 825K OHM 1 0 25W RES VAR NONWIR TRMR 2K OHM O SW RES VAR N0NW1R 2K OHM 10 0 50W RES FXD FILM 8 45K OHM 1 0 50W RES FXD CMPSN 2K OHM 5 0 125W RES FXD CMPSN 13K OHM 5 0 125W RES FXD CMPSN 100 OHM 5 0 125W RES FXD FILM 3 57K OHM 1 0 125W RES FXD FILM 3 57K OHM 1 0 125W RES FXD FILM 35 7K OHM 1 0 125W RES FXD CMPSN 510 OHM 5 ...

Page 124: ...R406 317 0752 00 RES FXD CMPSN 7 5K OHM 5 0 125W 01121 BB7525 R408 317 0183 00 RES FXD CMPSN 18K OHM 5 0 125W 01121 BB1835 R409 317 0393 00 RES FXD CMPSN 39K OHM 5 0 125W 01121 BB3935 R411 317 0243 00 RES FXD CMPSN 24K OHM 5 0 125W 01121 BB2435 R412 317 0822 00 RES FXD CMPSN 8 2K OHM 57o 0 125W 01121 BB8225 R415 317 0513 00 RES FXD CMPSN 51K OHM 5 0 125W 01121 BB5135 R422 317 0102 00 RES FXD CMPSN...

Page 125: ... 125W RES FXD CMPSN 100 OHM 5 0 125W RES FXD CMPSN 10K OHM 5 0 125W RES FXD FILM 90 9K OHM 0 25 0 125W RES FXD CMPSN 51K OHM 5 0 125W RES FXD FILM 10K OHM 0 25 0 125W RES FXD CMPSN 100K OHM 5 0 125W RES FXD FILM 10K OHM 0 25 0 125W RES FXD FILM 25 05K OHM 0 25 0 125W RES FXD FILM 16 5K OHM 1 0 125W RES FXD FILM 50 33K OHM 0 25 0 125W RES FXD FILM 12 4K OHM 1 0 125W RES FXD CMPSN 27K OHM 5 0 125W R...

Page 126: ...2997 3329P L58 102 R6C 321 0231 00 RES FXD FILM 2 49K OHM 1 0 125W 91637 MFF1816G24900F R602 321 0271 00 RES FXD FILM 6 49K OHM 1 0 125W 91637 MFF1816G64900F R603 317 0472 00 RES FXD CMPSN 4 7K OHM 5 0 125W 01121 BB4725 R724 315 0102 00 RES FXD CMPSN 1K OHM 5 0 25W 01121 CB1025 R734 317 0153 00 B010100 B019999 RES FXD CMPSN 15K OHM 5 0 125W 01121 BB1535 R734 317 0332 00 B020000 RES FXD CMPSN 3 3K ...

Page 127: ...LSTCi0 015UF 5 100V C104 283 0177 00 CAP FXD CER Dli1UF i 80 20 25V Cl 06 283 0051 00 CAP FXD CER Dli0 0033UF 5 1 0OV C108 283 0154 00 CAP FXD CER Dli22PF 5 50V cm 283 0115 00 CAP FXD CER Dli47PF 5 200V C114 283 0060 00 CAP FXD CER Dli100PF 5 200V Cl 22 283 0121 00 CAP FXD CER Dli0 001UF 20 200V Cl 24 283 0121 00 CAP FXD CER DliO OOl UF 20 200V C127 283 0072 01 CAP FXD CER Dli0 01UF f 80 20 200V C...

Page 128: ...52 0322 00 SEMICOND DEVICE SILICON 15V HOT CARRIER 50434 5082 2672 CR73 152 0322 00 SEMICOND DEVICE SILICON 15V HOT CARRIER 50434 5082 2672 CR91 152 0141 02 SEMICOND DEVICE SIUCON 30V 1 SOMA 01295 1N4152R CR92 152 0322 00 SEMICOND DEVICE SILICON 15V HOT CARRIER 50434 5082 2672 CR95 152 0322 00 SEMICOND DEVICE SILICON 15V HOT CARRIER 50434 5082 2672 CR96 152 0322 00 SEMICOND DEVICE SILICON 15V HOT ...

Page 129: ... LI 89 276 0543 00 SHLD BEAD ELEK FERRITE 80009 276 0543 00 L812 120 0382 00 B010100 B1 09999 XFMR TOROID 14 TURNS SINGLE 80009 120 0382 00 L814 120 0382 00 XFMR TOROID 14 TURNS SINGLE 80009 120 0382 00 L815 120 0382 00 XFMR TOROID 14 TURNS SINGLE 80009 120 0382 00 Q12 151 0190 00 TRANSISTORiSILICON NPN 07263 S032677 Q22 151 0190 00 B010100 B049999 TRANSISTOR SILICON NPN 07263 S032677 Q22 151 0302...

Page 130: ...PSN 7 5K OHM 5 0 125W RES FXD CMPSN 20K OHM 5 0 125W RES FXD CMPSN 15K OHM 5 0 125W RES FXD CMPSN 47 OHM 57o 0 50W RES FXD CMPSN 470 OHM 5 0 125W RES FXD CMPSN 4 7K OHM 5 0 125W RES FXD CMPSN 20K OHM 5 0 125W RES FXD CMPSN 470 OHM 5 0 125W RES VAR NONWIR TRMR 100 OHM O SW RES VAR NONWIR 100 OHM 10 0 50W RES FXD CMPSN 100 OHM 5 0 50W RES FXD CMPSN 75 OHM 5 0 50W RES FXD CMPSN 1K OHM 57o 0 125W RES ...

Page 131: ...0 125W RES FXD CMPSN 820 OHM 5 0 125W RES FXD CMPSN 4 7K OHM 5 0 125W RES FXD CMPSN 100 OHM 5 0 125W RES FXD CMPSN 2K OHM 5 0 25W RES FXD CMPSN 43K OHM 5 0 125W RES FXD CMPSN 9 1K OHM 5 0 125W RES FXD CMPSN 100 OHM 5 0 125W RES FXD CMPSN 9 1K OHM 5 0 125W RES FXD CMPSN 6 8K OHM 5 0 125W RES FXD CMPSN 4 3K OHM 5 0 125W RES FXD CMPSN 1 8K OHM 5 0 125W RES FXD CMPSN 2 4K OHM 5 0 125W RES FXD CMPSN 15...

Page 132: ...1K OHM 10 0 50W RES FXD FILM 1 58 OHM 1 0 50W RES FXD CMPSN 270 OHM 5 0 125W RES FXD CMPSN 150 OHM 5 0 125W RES FXD CMPSN 2K OHM 5 0 125W RES FXD CMPSN 100 OHM 5 0 125W RES FXD CMPSN 8 2K OHM 5 0 25W RES FXD CMPSN 15K OHM 5 0 125W RES FXD CMPSN 270 OHM 5 0 125W RES FXD CMPSN 1 8K OHM 5 0 125W RES FXD CMPSN 6 2K OHM 5 0 125W RES FXD CMPSN 30K OHM 5 0 125W RES FXD CMPSN 1 6K OHM 5 0 125 RES FXD CMPS...

Page 133: ... FILM 10K OHM 1 0 125W 91637 MFF1816G10001F R580D 321 0481 00 RES FXD FILM 1M OHM 1 0 125W 24546 NA4D1004F R648 317 0104 00 B010100 B029999 RES FXD CMPSN 100K OHM 5 0 125W 01121 BB1045 R648 315 0203 00 B030000 RES FXD CMPSN 20K OHM 5 0 25W 01121 CB2035 R649 321 0289 00 B010100 B029999 RES FXD FILM 10K OHM 1 0 125W 91637 MFF1816G10001F R649 315 0102 00 B030000 RES FXD CMPSN 1K OHM 5 0 25W 01121 CB1...

Page 134: ...rt Number S530A B B010100 B089999 PART OF BOARD ASSEMBLY S530A 105 0329 00 B090000 ACTR ASSY CAM S T ME CM 80009 105 0329 00 S530A SEE RMPL FOR REPLACEMENT PARTS S530B 105 0330 00 B090000 ACTR ASSY CAM SiSWEEP RANGE 80009 105 0330 00 S530B SEE RMPL FOR REPLACEMENT PARTS S531A C PART OF BOARD ASSEMBLY 6 22 REV SEP 1983 ...

Page 135: ...T BOARD ASSYiSCAN SW CKT BOARD ASSYiSCAN SW 80009 80009 670 1197 00 670 1197 01 CR609 152 0141 02 SEMICOND DEVICE SILICON 30V 1 50MA 01295 1N4152R DS610 DS610 150 0057 01 150 0048 01 B010100 B020000 B019999 LAMP INCAND 5V 0 115A WIRE LD SEL LAMP INCAND 5V 0 06A SEL 76854 S3774 17AS15 OL683AS15 TPL R609 317 0103 00 RES FXD CMPSN 10K OHM 5 0 125W 01121 BB1035 S610 PART OF BOARD ASSEMBLY A A 670 1198...

Page 136: ...1 0579 00 CONNECTOR RCPT MALE 74868 46475 1050 J569 131 0779 00 JACK TIP FOR 0 08 INCH DIA TEST POI 98291 016 8010 00 0208 J610 131 0779 00 JACK TIP FOR 0 08 INCH DIA TEST POI 98291 016 8010 00 0208 R70 311 1081 00 RES VAR NONWIR PNL 2 X 10K OHM 2W 71590 BA02660002 R570 311 0965 00 RES VAR NONWIR 2 X 10K OHM 10 10W 80009 311 0965 00 R610 311 0467 00 RES VAR NONWIR 100K OHM 20 0 50W 11237 300SF 413...

Page 137: ... heat sink S Switch or contactor circuit board etc heat radiator etc T Transformer AT Attenuator fixed or variable HR Heater TC Thermocouple B Motor HY Hybrid circuit TP Test point BT Battery J Connector stationary portion U Assembly inseparable or non repairable C Capacitor fixed or variable K Relay integrated circuit etc CB Circuit breaker L Inductor fixed or variable V Electron tube CR Diode si...

Page 138: ... RNG TIME DIV SCAN pushbutton SCAN control TIME POSITION control Fully clockwise free run Pushed in 5 ys 5 ys REP Fully cw Midposition 7B50 right horizontal compartment Mode Coupling Source Magnifier Time Div Auto P P Auto AC Int XI See Waveforms All voltages given on the diagrams are in volts Waveforms shown are actual waveform photographs taken with a Tektronix Oscilloscope Camera System Vertica...

Page 139: ......

Page 140: ...TRIGGER INPUT ...

Page 141: ......

Page 142: ...TM TRI C ER LEVEL STABILITV CONTROL TO Rib 2 CRI42 vLy l V DCPL 0 ARMIM TD OUTPUT TO CIRCUIT notes 1 t LEADLESS CAPACITORS 2 FOR DECOUPLING NETWORKS SEE h H6AT SIMK 4 UHQ PINIA TO FSVjPINTTO GROUND 5 ET EQUIVALENT TIME RTsREAL TIME TRIG PULSE TO BASE Q2I2 RIfel V p fe AUTO RECOV6RV REFERENCE DIAGRAMS TRIGGER INPUT TIME TO HEIGHT CONVERTER RATE ME TER HORIZONTAL AMPLIFIER SLOW RAMP GENERATOR TIMING...

Page 143: ......

Page 144: ...TIME TO HEIGHT CONVERTER ...

Page 145: ......

Page 146: ...TLINED OR DEPICTED IN GREY R329 s ik I5V REFEREIMCE DIAGRAMS TR IGCSER HOLD OFF TIME TO HEIGHT COHVERTER HORIZONTAL AMPLIFIER OUTPUT CONNECTORS VOLTAGE DISTRIBUTION DECOUPLING notes l LEADLESS CAPACITOR Z FOR DECOUPUn NETWORKS SEE REV APR 1984 SLEWING RAMP VRS 373 SLEWING RAMP RT MULTIVIBRATOR ...

Page 147: ......

Page 148: ...rMETER RATEMETER ...

Page 149: ......

Page 150: ...MEMORY A TE ORWER ...

Page 151: ...SLOW RAMP GENERATOR ...

Page 152: ...SLOW RAMP GENERATOR OUTPUT AMPLIFIER ...

Page 153: ......

Page 154: ...SLOW RAMP INVERTER ...

Page 155: ...G RAMP S6E PARTS tl3T FOR EAWUER VALUES AND SERIAL NUMBER RANGES OF PARTS OUTLINED OR DEPICTED IN GREY HORIZONTAL AMPLIFIER SLOW RAMP GENERATOR SLOWPAMP INVERTER OUTPUT CONNECTORS 1 DENOTES CAM SWITCH IN j CLOSED POSITION I fyo IN1BR PAC OAa p I COLUMN CURRENT 7TII SAMPLING SWEEP UNIT e ev Apb tBBA TIMIN SWITCHES TIMING SWITCHES ...

Page 156: ...UMBER RANGES OF PARTS OUTLINED OR DEPICTED IN GREY A TOP LEFT SIDE r 2 COLUMN CURRENT jV ROW CURRENT 3 1 LETTERS i I 28 i 8 lO WORD V SCAN LINES WORD SCAN LINES SOV I5 V sov isv LICWTS COMMON S G OUT FROM Rfo7fe 5IG OUT FROM Rfc e b ISV 5V LIGHTS SV R77I 4 7K BjSSS FROM EMITTER QlRfe BLANKING FROM COLLECTORS OF Q244 Q3fo8 Qfc 70 B TOP RIGHT SIDE 37 J 3b j A 35 i r i A 29 u 25 i J 20 INTER FACe BOA...

Page 157: ......

Page 158: ... FROM J I S OV I5V IS V FbV bOV P 0 mT R FA C E 7TII SAMPLING SWEEP UNIT R EV APR SSA T VOLTAGE DISTRIBUTION DECOUPLING ...

Page 159: ...FIG 2 ACCESSORIES ...

Page 160: ...REY Plo AHALO LO IC BO I TO COLLECTOR QfoOS V AH TO ATE W TO BASE Qfoia p o TRl trER Bpj i S Ul LIGHTS COMMON TO Q72 4 P O TiMINgr BOMLOj STABILITY I RTOB R EFERENCE DIAGRAMS TRIGGER INPUT 2 TRIGGER 4 HOLD OFF TIME TO HEIGHT CONVERTER H0R 20NTAU AMPLIFIER SLOW RAMP GENERATOR OUTPUT CONNECTORS PI 3fc T S8Q X fTRieTAM P O TIMING dOA RQ Q72 7TII SAMPLING SWEEP UNIT RBV APR I B4 FRONT PANEL SWITCHING ...

Page 161: ...y figure and index numbers to the illustrations ITEM NAME In the Parts List an Item Name is separated from the description by a colon Because of space limitations an Item Name may sometimes appear as incomplete For further Item Name identification the U S Federal Cataloging Handbook H6 1 can be utilized where possible ABBREVIATIONS S INCH NUMBER SIZE actr ACTUATOR ADPTR ADAPTER ALIGN alignment AL ...

Page 162: ...OUTHERN SCREW DIV SCHULZE MFG 50 INGOLD RD BURLINGAME CA 94010 TEXTRON INC CAMCAR DIV SEALECTRO CORP 105 SE TAYLOR 7923 SW CIRRUS DRIVE 2620 STEVENS DRIVE P O BOX 3608 17301 RIDGELAND RICHARDS AVENUE LOWER WASHINGTON STREET SKYLINE DR YOUK EXPRESSWAY 16150 STAGG STREET 2620 ENDRESS PLACE 186 WOOD AVE S 140 FOURTH AVE 16931 MILLIKEN AVE P O DRAWER 570 821 STEWART AVE 1501 MORSE AVENUE 446 MORGAN ST...

Page 163: ...T PLAIN HEX 0 25 32 X 0 312 INCH BRS END ATTACHING PARTS RESISTOR VAR SEE R70 REPL ATTACHING PARTS TERMINAL LUG 0 25 INCH DIA SE WASHER FLAT 0 25 ID X 0 375 INCH OD STL NUT PUUN HEX 0 25 32 X 0 312 INCH BRS END ATTACHING PARTS RESISTOR VAR SEE R679 R680 REPL ATTACHING PARTS WASHER LOCK 0 261 ID INTL 0 018 THK BRS NUT SLEEVE HEX 0 312 X 0 594 INCH LON BSHG MACH THD 0 25 32 X 0 159 ID X 0 24 END ATT...

Page 164: ...010 00 0208 40 352 0216 00 1 HOLDER TIP JACK 2 JACKS BLACK DELRIN 80009 352 0216 00 4 213 0012 00 1 SCREW MACHINE 4 40 X 0 375 INCH FLH STL 83385 OBD 210 0001 00 1 WASHER LOCK INTL 0 092 ID X 0 18 OD ST 78189 1202 00 00 054 1C 42 210 0405 00 1 NUT PLAIN HEX 2 56 X 0 188 INCH BRS 73743 12157 50 43 131 0850 00 1 CONN FEEDTHRU 3MM FEMALE EA END 26805 2084 5059 02 44 220 0531 02 1 NUT PLAIN HEX 0 25 3...

Page 165: ...ID X 0 025 THK STL SPRING FLAT 0 885 X 0 156 CU BE GLD CLR SEE FOOTNOTE ON FIG 1 57 SPRING FLAT GREEN COLORED SEE FOOTNOTE ON FIG 1 57 SPRING FLAT RED COLORED SEE FOOTNOTE ON FIG 1 57 ROLLER DETENT 0 125 DIA X 0 125 SST BEARING CAM SW FRONT ACTUATOR CAM SW TIME CM EXTENSION SHAFT 5 125 INCH LONG COVER CAM SW 20 ELEMENTS ATTACHING PARTS SCREW MACHINE 2 56 X 0 188 INCH PNH STL WASHER LOCK INTL 0 092...

Page 166: ...iFOR 0 025 INCH SQUARE PIN 22526 75377 001 106 136 0350 00 B010100 B212079 48 SOCKET PLUG IN 3 PIN LOW PROFILE 80009 136 0350 00 107 136 0365 00 B010100 B212079 3 SKT PL IN ELEK TRANSISTOR 3 CONTACT 80009 136 0365 00 108 136 0366 00 B010100 B212079 3 SOCKET PLUG IN 6 PIN 80009 136 0366 00 109 210 0707 00 1 EYELET METALLIC 0 147 OD X 0 100 INCH LON 12697 OBD 110 214 0579 00 14 TERM TEST POINT BRS C...

Page 167: ...X 0 10 L 80009 144 386 1402 00 1 PANEL REAR 80009 145 337 1238 00 B010100 B1 29999 1 SHIELD ELEC LEFT SIDE 80009 337 1238 01 B1 30000 1 SHIELD ELEC LEFT SIDE 80009 146 337 1163 00 B010100 B1 29999 1 SHIELD ELEC RIGHT SIDE 80009 337 1163 01 B 130000 1 SHLD ELECTFilCAL RIGHT SIDE 80009 342 0199 00 B1 70000 1 INSULATOR PLATE SIDE PANEL 80009 147 179 1526 00 1 WIRING HARNESS INTERFACE 80009 148 131 05...

Page 168: ...00 B181079 1 011 0059 02 B181080 1 2 012 0057 01 1 3 015 1018 00 1 4 070 0986 00 1 ATTENUATOR FXD 10 X ATTEN SO OHM BNC ATTENUATOR FXD 10 X ATTEN SO OHM BNC CABLE ASSY RF 50 OHM COAX W BNC ADAPTER CONN 3MM MALE TO BNC FEMALE MANUAL TECHilNSTRUCTION 80009 18203 80009 24931 80009 Mfr Part Number 011 0059 01 A314 ES 012 0057 01 29SP 124 1 070 0986 00 8 8 REV SEP 1983 ...

Page 169: ...rinting and shipping requirements we can t get these changes immediately into printed manuals Hence your manual may contain new change information on following pages A single change may affect several sections Since the change information sheets are carried in the manual until ail changes are permanently entered some duplication may occur If no such change pages appear following this page your man...

Page 170: ......

Page 171: ... 7T11A that are identical to the 7T1 1 A complete 7T11A Instruction Manual will be sent to you when available Please send change of address information to Tektronix Inc P O Box 500 Beaverton Oregon 97077 Attn Lab Scopes Delivery Station 39 327 This insert is provided as a supplement to the instruction manual furnished with this instrument The information given in this insert supersedes that given ...

Page 172: ......

Page 173: ... DI 27PF 20 100V CAP FXD CER DI 22PF 5 500V CAP FXD CER DI 200PF 5 100V 281 0797 00 281 0763 00 281 0812 00 152 0322 00 152 0322 00 315 0472 00 315 0563 00 317 0303 00 315 0103 00 315 0103 00 315 0105 00 CAP FXD CER DI 15PF 10 100V CAP FXD CER DI 47PF 10 100V CAP FXD CER DI 1000PF 107o 100V SEMICOND DVC DI SCHOTTKY SI 15V SEMICOND DVC DI SCH0TTKY SI 15V RES FXD CMPSN 4 7K OHM 5 0 25W RES FXD CMPSN...

Page 174: ... 5 0 25W RES FXD CMPSN 100K OHM 5 0 25W RES FXD CMPSN RES FXD CMPSN RES FXD CMPSN RES FXD CMPSN RES FXD CMPSN RES FXD CMPSN 15K OHM 5 0 25W 100 OHM 57o 0 25W 5 1 K OHM 57o 0 25W 10K OHM 5 0 25W IK OHM 57o 0 25W 5 1 K OHM 57c 0 25W RES FXD CMPSN 3K OHM 5 0 25W RES FXD CMPSN 10K OHM 5 0 25W RES FXD CMPSN 27K OHM 5 0 25W RES FXD CMPSN 30K OHM 5 0 25W RES FXD CMPSN 24K OHM 5 0 25W RES FXD CMPSN 2K OHM...

Page 175: ...ES FXD CMPSN 20K OHM 5 0 25W R7 321 0277 00 RES FXD FILM 7 5K OHM 1 0 125W R8 321 0361 00 RES FXD FILM 56 2K OHM 1 0 125W R9 315 0103 00 RES FXD CMPSN 10K OHM 5 0 25W R20 315 0103 00 RES FXD CMPSN 10K OHM 5 0 25W R630 315 0101 00 RES FXD CMPSN 100 OHM 5 0 25W 1 Make the following changes to the TIMING BOARD ASSEMBLY Replaceable Electrical Parts List CHANGE TO 670 1119 14 CKT BOARD ASSY TIMING C221...

Page 176: ...3 9K OHM 5 0 25W RES FXD CMPSN 56K OHM 5 0 25W 315 0103 00 315 0623 00 315 0303 00 315 0363 00 315 0203 00 315 0511 00 RES FXD CMPSN 10K OHM 5 0 25W RES FXD CMPSN 62K OHM 5 0 25W RES FXD CMPSN 30K OHM 5 0 25W RES FXD CMPSN 36K OHM 5 0 25W RES FXD CMPSN 20K OHM 5 0 25W RES FXD CMPSN 510 OHM 5 0 25W 315 0103 00 315 0683 00 315 0203 00 315 0303 00 315 0103 00 315 0103 00 RES FXD CMPSN 10K OHM 5 0 25W...

Page 177: ...0 25W R424 315 0202 00 RES FXD CMPSN 2K OHM 5 0 25W R433 315 0203 00 RES FXD CMPSN 20K OHM 5 0 25W R434 315 0433 00 RES FXD CMPSN 43K OHM 5 0 25W R437 315 0393 00 RES FXD CMPSN 39K OHM 5 0 25W R438 315 0512 00 RES FXD CMPSN 5 1 K OHM 5 0 25W R439 315 0103 00 RES FXD CMPSN 10K OHM 5 0 25W R442 315 0224 00 RES FXD CMPSN 220K OHM 5 0 25W R443 315 0274 00 RES FXD CMPSN 270K OHM 5 0 25W R445 315 0103 0...

Page 178: ...OHM 5 0 25W R562 315 0363 00 RES FXD CMPSN 36K OHM 5 0 25W R568 315 0682 00 RES FXD CMPSN 6 8K OHM 5 0 25W R569 315 0682 00 RES FXD CMPSN 6 8K OHM 5 0 25W R572 315 0101 00 RES FXD CMPSN 100 OHM 5 0 25W R574 315 0205 00 RES FXD CMPSN 2M OHM 5 0 25W R603 315 0472 00 RES FXD CMPSN 4 7K OHM 5 0 25W R734 315 0332 00 RES FXD CMPSN 3 3K OHM 5 0 25W R821 315 0100 00 RES FXD CMPSN 10 OHM 5 0 25W R824 315 0...

Page 179: ...62 00 CAP FXD CER DI 27PF 20 100V Cl 78 281 0811 00 CAP FXD CER Dl 10PF 107o 100 C182 281 0759 00 CAP FXD CER DI 22PF 10 100V Cl 86 281 0762 00 CAP FXD CER Di 27PF 20 100V Cl 87 281 0811 00 CAP FXD CER DI 10PF 10 100V Cl 91 281 0773 00 CAP FXD CER 01 0 01 UF 10 100V C81 1 283 0253 00 CAP FXD CER DI 0 01UF 10 100V C813 281 0773 00 CAP FXD CER 01 0 01 UF 10 100V C816 283 0253 00 CAP FXD CER 01 0 01 ...

Page 180: ...S FXD CMPSN 270 OHM 5 0 25W R158 315 0151 00 RES FXD CMPSN 150 OHM 5 0 25W R159 315 0202 00 RES FXD CMPSN 2K OHM 5 0 25W 1 R164 315 0153 00 RES FXD CMPSN 15K OHM 5 0 25W R165 315 0271 00 RES FXD CMPSN 270 OHM 5 0 25W I R167 315 0182 00 RES FXD CMPSN 1 8K OHM 5 0 25W I I R171 315 0622 00 RES FXD CMPSN 6 2K OHM 5 0 25W 1 1 R172 315 0303 00 RES FXD CMPSN 30K OHM 5 0 25W 1 R174 315 0162 00 RES FXD CMP...

Page 181: ...and the horizontal memory is gated on Figure 3 9 shows that during equivalent time operation Interdot blanking starts when the trigger TD goes to its high state and ends when the horizontal memory gating pulse ends Overrun blanking prevents the display of a dot if either of the push pull outputs of the Horizontal Amplifier exceeds 5 volts This prevents display of undesirable parts of the sweep Bot...

Page 182: ...ith their associated components and operates as follows Until Q368 receives a trigger signal its base and emitter are held high by pin 6 of U110B and Q196 in the Trigger HolcJoff circuit When a trigger signal is received by Q196 it enables Q368 by pulling its emitter low Q368 then drives Q2 to provide a positive CRT blanking signal at output connector A17 The CRT blanking signal will remain high a...

Page 183: ...ing illustration shows the portion of the new Logic board containing th i w hiankirir ci r caj it The following diagram is a schematic of the new blanking circuit added to the Logic board to make the 7T11A compatible with the 785A Oscilloscope ...

Page 184: ...Produci 7T11A Date 4 25 85 Chanoe Reference C1 A85 ...

Page 185: ...to 51 K Add CR364 and R364 to the base circuit of Q368 Replace CR368 with R368 between the collector of Q368 and 5V Remove TP368 from the collector of Q368 and R362 from between the collector of Q362 and the base of Q368 fROM collector Page 13 of 16 ...

Page 186: ...e DESCRIPTION Cluinge Reference SLOW RAMP GENERATOR OUTPUT AMPLIFIER Change C636 from 18 to 15 pF Make the following corrections in the emitter circuit of Q668 Add R630 in series with C630 which changes from 220 to 200 pF Page 14 of 16 ...

Page 187: ......

Page 188: ... to connectors A1 A16 A17 B4 and B7 for the circuitry added to the LOGIC circuit board pLAKKiN FR6 vtQI main fsame mope Lt HT3 COfiKOM 5lt ooT RO i si oirrFWA R 8 45V i ic HTS cttANMEi smitche k wau 7 l o 5 FBOM emitter y 2 BLANtOkK fROM CouectoRS 9 44 Q470 J AHP TO BArfeE OV Q o ...

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