Tektronix PG 505 Instruction Manual

Pulse generator

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Tektronix, Inc.

P.O. Box 500

Beaverton, Oregon

97077

070-1583-01

Product Group 75

Tektronix

PLEASE CHECK FOR CHANGE INFORMATION

AT THE REAR OF THIS MANUAL.

INSTRUCTION

Serial Number ___________________

COMMITTED TO EXCELLENCE

MANUAL

First Printing SEP 1973

Revised DEC 1981

Table of Contents

Troubleshooting

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Summary of Contents for Tektronix PG 505

Page 1 Tektronix COMMITTED TO EXCELLENCE PLEASE CHECK FOR CHANGE INFORMATION AT THE REAR OF THIS MANUAL. INSTRUCTION MANUAL Tektronix, Inc. P.O. Box 500 Beaverton, Oregon 97077 Serial Number ___________________ First Printing SEP 1973 070-1583-01 Product Group 75 Revised DEC 1981...
Page 3: Table Of Contents
PG 505 TABLE OF CONTENTS Page LIST OF ILLUSTRATIONS ......................... ii OPERATOR SAFETY SUMMARY ......................iii SERVICE SAFETY SUMMARY ......................v SECTION 1 Specification ..................... SECTION 2 Operating Instructions ..................WARNING THE FOLLOWING SERVICE INSTRUCTIONS ARE FOR USE BY QUALIFIED PERSONNEL ONLY.
Page 4: List Of Illustrations
Page Frontis PG 505 Pulse Generator ..................... PG 505 Installation and Removal ................Controls and Connectors ................... 2-2 Pulse duration and period being controlled by various external signals ....Start of output pulse being controlled by selected pick-off voltage point on ramp signal ..........................
Page 5: Operators Safety Summary
PG 505 OPERATORS SAFETY SUMMARY and ground. A protective ground connection by way of the The general safety information in this part of the summary grounding conductor in the power cord is essential for is for both operating and servicing personnel. Specific safe operation.
Page 6: Service Safety Summary
PG 505 SERVICE SAFETY SUMMARY FOR QUALIFIED SERVICE PERSONNEL ONLY Refer also to the preceding Operators Safety Summary. Disconnect power before removing protective panels, Do Not Service Alone soldering, or replacing components. Do not perform internal service or adjustment of this product unless another person capable of rendering first aid and resuscitation is present.
Page 7 PG 505 PG 505 Pulse Generator REV A JAN 1981...
Page 8: Specification
All inputs and outputs available at the interface connec limits for optimum instrument operation. These limits are tor, located at the back of the PG 505 and the TM 500 not instrument specifications, but they are intended to be Series Power Module, are shown in the Maintenance used as maintenance or operational aids.
Page 9 Specification — PG 505 Table 1-1 (cont) Characteristics Performance Requirements Supplemental Information 10 µs, 100 µs, and 1 ms Within ±5% of indicated time when T R and TF controls are set to X1 position. (Between 0% and 100% points.) Pulse Duration (Width) 5 µs or less to 50 ms (5 µs to 5 ms...
Page 10: Environmental Characteristics
Specification — PG 505 Table 1-2 ENVIRONMENTAL CHARACTERISTICS Description Characteristics Temperature Operating 0°C to +50° C Storage – 40°C to +75° C Altitude Operating To 15,000 feet Storage T о 50,000 feet Vibration Operating and Non- With the instrument complete and operating, vibration frequency swept Operating from 10 to 50 to 10 Hz and 1 minute per sweep.
Page 11: Operating Instructions
Section 2 — PG 505 OPERATING INSTRUCTIONS Initial Operation that the POWER light on the PG 505 is on. The Controls and Connectors Fig. 2-2 gives a complete description of the front panel controls and connectors. CAUTION Functions Available At Rear Connector Turn the Power Module off before inserting the plug ...
Page 12: Controls And Connectors
Operating Instructions — PG 505 VARIABLE (Period) VARIABLE (Pulse PULSE DURATION Control Duration) Control Switch Provides continuously vari Provides continuously vari Switch concentric with PE able selection of pulse peri able selection of pulse dura ...
Page 13: Operating Considerations
OPERATING CONSIDERATIONS Output Connections Risetime and Falltime The output of the PG 505 is designed to operate as a If the output pulse from the PG 505 is used for voltage source with a 4 kΩ resistor in series. measuring the rise and falltime of a device, the risetime characteristics of associated equipment may have to be considered.
Page 14: Operating Modes
proximately equal to the setting of the OUTPUT DELAY EXTERNAL control before an output pulse is generated. The PG 505 SQUAREWAVE output returns to zero when the signal on the INPUT...
Page 15: Functions Available At Rear Connector
Unassigned pins are available at the rear connector for Power Module can be wired with barriers installed to routing signals to and from the PG 505 for specialized provide specific functions between compartments. See applications (see Rear Connector Pin Assignments in...
Page 16 Operating Instructions — PG 505 DEFINITIONS OF PULSE CHARACTERISTICS The following is a glossary of common pulse char Falltime — The time interval, at the pulse trailing edge, acteristics used in this manual. They are also illustrated in for the pulse amplitude to fall from the 90% amplitude level Fig.
Page 17: Repackaging For Shipment
REPACKAGING FOR SHIPMENT Gross Weight (lb) Carton Test Strength (lb) 0-10 If the Tektronix instrument is to be shipped to a 10-30 Tektronix Service Center for service or repair, attach a tag showing: owner (with address) and the name of an...
Page 18: Operation
Q102, Q100 and Q1 15 conduct. With Q1 15 conducting, the period generator output is low. (The PG 505 output state is determined by the DURATION GENERATOR period generator's transitions). As soon as the base of...
Page 19: Theory Of Operation
Q200 to remai n high. The output source follower, presents a high impedance to the input of the PG 505 is now a de level controlled by the signal from the current sources and a low impedance to AMPLITUDE control.
Page 20 Theory of Operation — PG 505 +5 Volt Supply. The 5 volt supply is derived from the Q290, Q310, Q316, Q320, Q330, Q346, and Q354 +20 volt supply. The supply consists of voltage dropping compose an operational amplifier stage whose gain is resistor R542, Zener diode VR542, emitter follower tran ...
Page 21 Theory of Operation — PG 505 +48 Volt Supply. The regulator for the + 48 volt supply voltage is amplified by Q566 and Q576 and used to change consists of Q566 (an error sensing and amplifier tran the conduction of Q580 to correct output voltage. R564 sistor), Q576 (an error amplifier and regulator transistor), provides current limiting for Q566 in case Q576fails.
Page 22: Calibration Procedure
Contact your local Tektronix field office or representative for further information. For convenience, some steps in the procedure check the performance of this instrument at only one value in the specified performance range.
Page 23: Performance Check
PULSE PERIOD PULSE DURATION 50 µs d. Remove the 10X probe and connect a coaxial cable Fully ccw PERIOD VARIABLE from the OUTPUT of the PG 505 to the input of the DURATION VARIABLE Fully ccw oscilloscope. T, Variable Fully ccw...
Page 24 6. Check Pulse Aberrations d. Remove the 10 kΩ resistor and replace it with a 600 Ω a. Set the PG 505 to the initial control settings. resistor. b. Set the pulse PERIOD to 10 µs and the pulse e.
Page 25: Pulse Period And Duration Check
Check Output Delay Range center. a. Set the PG 505 to the initial control settings. h. CHECK that the PG 505 output pulse begins at the point where the ramp signal crosses the graticule b. Connect the equipment as shown in Fig. 4-3.
Page 26: Output Delay Range Check
Set the PG 505 OUTPUT DELAY cw. e. Check the test oscilloscope for a square wave display. j. CHECK that the PG 505 output pulse begins at the point where the ramp signal crosses the 10 V level (2 Check LOCKED ON divisions above the graticule center) within.
Page 27: Adjustment Procedure
8 of this manual. Install a 50 Ω terminator on the PG 505 OUTPUT connector. d. Connect a 50 Ω cable from the PG 505 OUTPUT to the input of the oscilloscope. 1. Adjust – 20 V Power Supply (R520) a.
Page 28 Adjust R150 (10 µs Adj) for a digital frequency counter reading of 100 kHz (±5 kHz). f. Set the PG 505 Rise and Fall Times switch to 1 µs. h. To verify the operation of all ranges and functions, use the Performance Check.
Page 29: Maintenance
Section 5 — PG 505 MAINTENANCE GENERAL in the absence of a malfunction are not recommended as preventive maintenance measures. See the semiconduc Introduction tor checking information under Troubleshooting Techni ques which follow. A convenient time to perform preven ...
Page 30: Troubleshooting Techniques
Maintenance — PG 505 knob end, toward the rear of the switch. The charts are operating correctly. Checkfor proper interconnection indicate with a solid dot when each contact is closed. between the power module and the plug-in modules. Check the line voltage at the power source. Verify that the signal is properly connected and that the interconnecting cables and signal source are not defective.
Page 31 Tektronix, Inc., to satisfy particular requirements, or are manufactured for Tektronix, I nc., to our specifications. or blue-, brown - gray - green indicates Tektronix Part Most of the mechanical parts used in this system have Number 152-0185-00). The cathode and anode ends of been manufactured by Tektronix, Inc.
Page 33 16-pin integrated circuits to prevent damage to the pins. Catalog and Supplements. This tool is available from Tektronix, Inc. If an extracting tool is not available, use care to avoid damaging the pins. Pull slowly and evenly on both ends of the IC. Try toavoid...
Page 34 7. Do not slide the components over any surface. assistance in repair of the cam switches, contact your local Tektronix Field Office or representative. 8. Avoid handling components in areas that have a floor or work surface covering capable of generating a Cleaning.
Page 35: Relative Susceptibility To Static Discharge Damage
Maintenance — PG 505 3. Flush the contact with isopropyl alcohol and blow it dry with low-pressure air. Isopropyl alcohol is flammable; avoid its use near open flame or other potential sources of ignition. Table 5-1 RELATIVE SUSCEPTIBILITY TO STATIC DISCHARGE DAMAGE...
Page 36: Rear Connector Pin Assignments
* Assignments listed for pins 1A — 13A and 1B — 13B are available in all power modules; however only those pins marked with an asteris k ( * ) are used by the PG 505. † NOTE: Use contacts 9A or 9B for common ground.
Page 37: Maintenance Aids
Maintenance — PG 505 Table 5-3 MAINTENANCE AIDS The following maintenance aids include items required for some maintenance procedures in this instrument. Equivalent products may be substituted for examples given providing characteristics are similar. Example Description Specifications General soldering and...
Page 38: Options
Section 6 — PG 505 OPTIONS Mod 818C. Factory installed grounded output connector. @ JAN 1981...
Page 39: Replaceable Electrical Parts
If a part you have ordered has been replaced with a new or improved part, your local Tektronix, Inc. Field Office or representative will contact you concerning any change in part number.
Page 40: Cross Index-Mfr. Code Number To Manufacturer
Replaceable Electrical Parts — PG 505 CROSS INDEX-MFR. CODE NUMBER TO MANUFACTURER Mfr. Code Manufacturer Address City, State, Zip P 0 BOX 128 PICKENS, SC 29671 00853 SANGAMO ELECTRIC CO., S. CAROLINA DIV. 1201 2ND STREET SOUTH MILWAUKEE, WI 53204...
Page 41 Replaceable Electrical Parts — PG 505 Serial/Model No Tektronix Code Mfr Part Number Dscont Name & Description Ckt No. Part No. 670-2927-00 B 010100 B022039 CKT BOARD ASSY:MAIN 80009 670-2927-00 670-2927-01 B022040 B023189 CKT BOARD ASSY:MAIN 80009 670-2927-01 670-2927-02 B023190...
Page 42 Replaceable Electrical Parts — PG 505 Tektronix Serial/Mcdei No. Ckt No. Part No. Dscont Name & Description Code Mfr Part Number CR120 152-0141-02 SEMICOND DEVICE : SILICON,30V , 150MA 01295 1N4152R CR122 152-0141-02 SEMICOND DEVICE : SILICON , 30V,150MA 01295...
Page 43 Replaceable Electrical Parts — PG 505 Tektronix Serial/Model No. Dscont Name & Description Code Mfr Part Number Ckt No. Part No. Q310 151-0432-00 TRANSISTOR:SILICON,NPN 80009 151-0432-00 Q316 151-0350-00 TRANSISTOR : SILICON , PNP 04713 SPS67 00 Q320 151-0350-00 TRANSISTOR : SILICON , PNP...
Page 44 Replaceable Electrical Parts — PG 505 Tektronix Serial/Model No. Mfr Part Number Ckt No. Part No. Dscont Name & Description Code R166 315-0201-00 RES. , FXD.CMPSN: 200 OHM.5 % .0.25W CB2015 01121 R168 315-0201-00 RES. , FXD.CMPSN: 200 OHM.5 % .0.25W...
Page 45 Replaceable Electrical Parts — PG 505 Tektronix Serial/Model No. Name & Description Code Mfr Part Number Part No. Dscont Ckt No. R314 RES. , FXD,CMPSN:3.6K OHM, 5 % ,0. 25W 01121 CB3625 315-0362-00 RES. .FXD.CMPSN: 3K OHM, 5 % ,0. 25W...
Page 46 Replaceable Electrical Parts — PG 505 Tektronix Serial/Model No. Ckt No. Part No. Dscont Name & Description Code Mfr Part Number R580 315-0150-00 RES. , FXD , CMPSN : 15 OHM,5 % ,0.25W 01121 CB1505 R590 305-0621-00 RES. , FXD,CMPSN: 620 OHM,5 % ,2W...
Page 47: Block Diagram
BLOCK DIAGRAM NON-FLOATING CIRCUITRY FLOATING CIRCUITRY...
Page 48: Adjustment Locations
ADJUSTMENT LOCATIONS PG 505 GROUND REFERENCED TEST POINTS FLOATING GROUND REFERENCED TEST POINTS 1583 12...
Page 49: Diagrams And Circuit Board Illustrations
Section 8 — PG 505 DIAGRAMS AND CIRCUIT BOARD ILLUSTRATIONS Symbols Y14.15, 1966 Drafting Practices. Graphie symbols and class designation letters are Y14.2, 1973 Line Conventions and Lettering. based on ANSI Standard Y32.2-1975. Y10.5, 1968 Letter Symbols for Quantities Used in Logic symbology is based on ANSI Y32.14-1973 in...
Page 50 CIRCUIT BOARD PARTS LOCATION...
Page 51 Table 8-1 GENERATOR AND TRIGGER <^> P /О A1 ASSY BOARD SCHEMATIC CIRCUIT SCHEMATIC BOARD CIRCUIT LOCATION LOCATION NUMBER LOCATION LOCATION NUMBER R118 C100 R120 C120 K З R122 C126 R124 C128 R126 K З C129 R128 C130 М2 R132 C132 R135 М2...
Page 52 GENERATORS AND TRIGGER...
Page 53 Table 8-2 OUTPUT <2> CIRCUIT BOARD CIRCUIT SCHEMATIC BOARD CIRCUIT SCHEMATIC BOARD SCHEMATIC NUMBER LOCATION NUMBER LOCATION LOCATION NUMBER LOCATION LOCATION LOCATION Q 330 Кб C198 R310 Q 346 R314 C210 К4 Q 354 КЗ C250 R316 К4 C252 Q 360 R320 C254 Q370...
Page 54 OUTPUT...
Page 55: Power Supply
Table 8-3 POWER SUPPLY <3> P /О A1 ASSY CIRCUIT SCHEMATIC BOARD CIRCUIT SCHEMATIC BOARD NUMBER LOCATION LOCATION LOCATION NUMBER LOCATION C514 R550 C534 R552 C545 R555 R557 C550 C555 R560 C557 R562 R564 C564 C566 R566 C580 R568 C598 R570 C610 R572...
Page 56 POWER SUPPLY...
Page 57: Replaceable Mechanical Parts
If a part you have ordered has been replaced with a new or Parts of Detail Part improved part, your local Tektronix, Inc. Field Office or Attaching parts for Parts of Detail Part representative will contact you concerning any change in part number.
Page 58 Replaceable Mechanical Parts — PG 505 CROSS INDEX-MFR. CODE NUMBER TO MANUFACTURER Manufacturer City, State, Zip Mfr. Code Address BEAVERTON, OR 97005 000CY NORTHWEST FASTENER SALES, INC. 7923 SW CIRRUS DRIVE WAKEFIELD, MA 01880 05820 WAKEFIELD ENGINEERING, INC. AUDUBON ROAD GARDEN GROVE, CA 92642 SPECTRA-STRIP CORP.
Page 59 Replaceable Mechanical Parts — PG 505 Fig. & Tektronix Serial/Model No. Index Code Mfr Part Number Name & Description Dscont Qty 1 2 3 4 5 Part No. 337-1399-00 SHLD,ELECTRICAL : SIDE 80009 337-1399-00 KNOB:GRAY WITH SETSCREW 80009 366-0494-00 366-0494-00 .
Page 60 Replaceable Mechanical Parts — PG 505 Fig & Index Tektronix Serial/Model No. Code Mfr Part Number Part No. Dscont Qty 1 2 3 4 5 Name & Description 1-43 337-1848-00 SHLD,ELECTRICAL:FRONT SUBPANEL 337-1848-00 80009 384-1099-00 EXTENSION SHAFT:PUSH BUTTON, 1.54 INCH LONG...
Page 61 Fig. & Incex Tektronix Senal/Model No. Mfr Part Number Part No Dscont Qty 1 2 3 4 5 Name & Description Code ACCESSORIES 070-1583-01 MANUAL,TECH:SERVICE 80009 070-1583-01 PG 505 REV C JAN 1981...