Tektronix WFM601 Service Manual
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Tektronix WFM601 Service Manual

Serial digital component
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Service Manual

WFM601
Serial Digital Component Monitor
070-8876-00
Please check for change information at the rear
of this manual.
First Printing May 1994
Revised October 1994

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Summary of Contents for Tektronix WFM601

  • Page 1: Service Manual

    Service Manual WFM601 Serial Digital Component Monitor 070-8876-00 Please check for change information at the rear of this manual. First Printing May 1994 Revised October 1994...
  • Page 2 Copyright Tektronix, Inc., 1994. All rights reserved. Printed in U.S.A. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supersedes that in all previously published material. Specifications and price change privileges reserved. The following are registered trademarks: TEKTRONIX and TEK.
  • Page 3 In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expi- ration of the warranty period and make suitable arrangements for the performance of service. Customer shall be responsible for packaging and shipping the defective product to the service center designated by Tektronix, with shipping charges prepaid.
  • Page 4 The WFM 601 Serial Digital Component Monitor...
  • Page 5 WFM601 Serial Digital Component Monitor WFM601 Serial Digital Component Monitor...

  • Page 6: Safety Standards

    Standards Compliance The WFM601 Serial Digital Component Monitor complies with the following safety standards: Underwriters Laboratories: UL1244 — Second Edition—Standard for Electrical and Electronic Measuring and Testing Equipment FM 3820 – “Approval Standard for Electrical Utilization Equipment.” Canadian Standards Association: C22.2 No. 231 Series–M89—CSA Safety Re- quirements for Electrical and Electronic Measuring and Testing Equipment American National Standard: ANSI/ISA–S82–1988—Safety Standard for Electri-...

  • Page 7: Specifications

    Contents Specifications Specification ..........1–1 Characteristics Tables .

  • Page 8: Table Of Contents

    6–6 Tektronix Service Offerings .........
  • Page 9 Contents Electrical Parts List ..............8–1 Diagrams .

  • Page 10: Revised Nov

    Contents WFM 601 - Service Manual Revised Nov 1994...

  • Page 11: List Of Figures

    Contents List of Figures Figure 2–1: Dimensions of the 1700F00 Plain Cabinet ....2–2 Figure 2–2: 1700F02 Portable Cabinet ....... . 2–3 Figure 2–3: Rear View Showing the Securing Screws .
  • Page 12 Contents Figure 6–2: Instrument Etched Circuit Board Assemblies ....6–17 Figure 6–3: Multiple Pin Connectors ........6–18 Figure 6–4: CRT Bezel Removal .
  • Page 13 Contents List of Tables Table 1–1: Waveform Vertical Deflection ......1–4 Table 1–2: Serial Digital Interface (Serial A &...
  • Page 14 Contents WFM 601 - Service Manual viii Revised Nov 1994...

  • Page 15: Safety Summary

    Safety Summary This summary contains general safety information for operating and servicing personnel. Specific warnings and cautions are given throughout the manual where they apply, but may not appear in this summary. Terms In this manual CAUTION statements identify conditions or practices that can damage the equipment or other property.
  • Page 16 Safety Summary Ground the product This product is grounded through the grounding conductor of the power module power cord. To avoid electrical shock, plug the power cord into a properly wired receptacle before connecting to the product input or output terminals. A protec- tive ground connection by way of the grounding conductor in the power cord is essential for safe operation.
  • Page 17 Preface This manual provides servicing information for the WFM601 Serial Digital Compnent Monitor. Material found in this volume is targeted at the service technician; additional operating information can be found in that instrument’s “User” manual. To date there are two manuals available for this instrument. This Service Manual and a User manual.

  • Page 18: Performance Verification

    Preface The specifications contained in the Specification section of this manual should be used by the servicing technician. Its tables contain Performance Verification step numbers to make it possible to document the test methods used to verify the accuracy of the instrument. The User manual contains some servicing instructions for quick, non dangerous operations;...

  • Page 20: Specification

    Specification The WFM 601 is a half-rack width by three rack unit high serial component monitor. It employs a bright, white phosphor, post accelerated CRT with lighted internal graticule. The parallax free internal graticule structure contains markings for waveform functions. The lightning, diamond, vector, and audio graticules are electronic, in order to keep from complicating the waveform graticule.
  • Page 21 Specification Major Features The following list composes the feature set for the WFM 601. GBR or Y P display format. Any or all of channels 1, 2, or 3 displayed. Parade or Overlay display. Flat or Diff’d Step filtering. X1, X5, X10, and Variable display gain. X25 Magnified sweep.

  • Page 22: Characteristics Tables

    Specification Characteristics Tables The tables that follow specify instrument electrical characteristics, mechanical characteristics, environmental characteristics, and certification. The tables are logically grouped under specific functions, beginning with waveform input and vertical channel specifications and ending with the instrument’s mechanical characteristics. Categories Each table consists of a column that identifies the characteristics that are defined by the entries in the Description column.
  • Page 23 Specification Table 1–1: WAVEFORM VERTICAL DEFLECTION CATEGORY DESCRIPTION For Digital Input: 700 mV digital input = 700 mV 2% screen display Deflection Factor any magnifier setting. Any one of the 3 channels. REF: REF: RGB on screen accuracy Performance Verification Procedure Step REF: 0.2X to 1.4X.
  • Page 24 Specification Table 1–2: SERIAL DIGITAL INTERFACE (Serial A & Serial B) CATEGORY DESCRIPTION Format REF: 270 Mbit/s component. Complies with SMPTE 259M & CCIR 656. REF: Passive loop-through 75 compensated. Input Type Input Level REF: 800 mV peak-to-peak 10%. Input voltages outside this range may cause reduced receiver REF: performance.
  • Page 25 Specification Table 1–4: SERIAL VIDEO DIAGNOSTICS CATEGORY DESCRIPTION Video Error Detection REF: Type: Active picture and full field. Field rate resolution. Uses CRC check word system. System is known as EDH (Error Detection and Handling) in industry literature. REF: Complies with SMPTE RP 165. Front panel EDH DET lamp.
  • Page 26 Specification Table 1–6: WAVEFORM HORIZONTAL DEFLECTION CATEGORY DESCRIPTION Synchronization: Sweep Internal: Proper horizontal and vertical synchronization with a component digital signal conforming to CCIR Rec. 601 and SMPTE 125M. External: Proper horizontal and vertical synchronization with a composite sync signal of appropriate line and field rate. Performance Verification Procedure Step REF: Sweep Length:...

  • Page 27: Table 1-8: Analog Audio Mode

    Specification Table 1–8: ANALOG AUDIO MODE CATEGORY DESCRIPTION Input REF: DC coupled, differential input. 20 k . Input Impedance REF: Full Scale Selection REF: 0, 4, 8, & 12 dBu full scale. Menu selectable. 0.5 dB. Full Scale Accuracy Performance Verification Procedure Step 8 V peak.
  • Page 28 Specification Table 1–10: LIGHTNING MODE CATEGORY DESCRIPTION Vertical Gain Accuracy Performance Verification Procedure Step : 14 REF: Y is displayed vertically. Electronic Graticule Display is displayed horizontally on top half of display. is displayed horizontally on bottom half of display. Table 1–11: BOWTIE MODE CATEGORY...
  • Page 29 Specification Table 1–13: POWER SOURCE CATEGORY DESCRIPTION 90 – 250V, 50/60 Hz, 1.5A maximum. Electrical Rating Continuous range from 90 to 250V ac. REF: Performance Verification Procedure Step Single Phase. Supply Type REF: Detachable cord set. Supply Connection REF: <110 VA (70 watts). Power Consumption REF: Table 1–14:...
  • Page 30 FCC EMI Compatibility (FCC Rules Part 15, Subpart J, Class A) VDE 0871.5 (Class B) Instrument must be installed in a cabinet equal to the shielding provided by Tektronix F00 or F02 cabinets to qualify for EMI certification. WFM 601 - Service Manual...
  • Page 31 Specification Table 1–17: PHYSICAL CHARACTERISTICS CATEGORY DESCRIPTION Dimensions Height: 5 1/4 inches (133.4 millimeters). Width: 8 1/2 inches (215.9 millimeters). Depth: 18 1/8 inches (460.4 millimeters). Net: 8 pounds (3.8 kilograms). Weight Shipping: 15.7 pounds (7.2 kilograms) approximate. WFM 601 - Service Manual 1–12...

  • Page 33: Installation

    Installation The information contained here deals with the installation and operation of the WFM 601 Serial Digital Component Monitor. If the instrument is to be removed from its installed position for servicing, this will provide the information needed to remove or reinstall it. Note that the repackaging information is located at the end of the Maintenance section.

  • Page 34: Figure 2-1: Dimensions Of The 1700F00 Plain Cabinet

    The 1700F02 portable carrying case is an enhanced version of this cabinet, as is the 1700F04 side-by-side rack mount assembly. All of these cabinets are available from Tektronix. If you need one of these cabinets, contact your nearest Tektronix field office or representative for assistance in ordering.

  • Page 35: Figure 2-2: 1700F02 Portable Cabinet

    1700F00. All of the 1700–Series metal cabinets (which also fit the WFM 601), that are available from Tektronix as Optional Accessories, provide the proper electrical environment for the instrument. They supply adequate shielding, minimize handling damage, and reduce dust accumulation within the instrument.

  • Page 36: Figure 2-3: Rear View Showing The Securing Screws

    The optional 1700F05 side-by-side rack adapter, shown in Figure 2–4, consists of two attached cabinets. It can be used to mount the WFM 601 and another half-rack width instrument, such as an analog component monitor (Tektronix 1760-Series), in a standard 19-inch rack.

  • Page 37: Figure 2-4: The 1700F05 Side-By-Side Rack Adapter

    Installation 18.970 CONTROLS FRONT PANEL TO RACK ALIGNMENT. 6.875 5.250 Mounting 17.270 Holes REAR VIEW Figure 2–4: The 1700F05 Side-by-side Rack Adapter The rack adapter is adjustable, so the instrument can be more closely aligned with other equipment in the rack. See Figure 2–4. 1700F05 1700F06 Figure 2–5: A 1700F05 with a Blank Front Panel (1700F06)

  • Page 38: Figure 2-6: 1700F05 Rack Mounting With A 1700F07 Utility Drawer

    If only one side of the rack adapter is used, a 1700F06 Blank Panel can be inserted in the unused section. See Figure 2–5. The rack adapter and panel are available through your local Tektronix field office or representative. When only one instrument is mounted in the side-by-side adapter an accessory drawer (1700F07) can be installed in the blank side of the cabinet.

  • Page 39: Figure 2-7: Custom Installation Of An Instrument

    Installation For Flush Front Panel: Cut hole the same size as the monitor front molding to allow the monitor front panel to align with the custom panel surface. Requires four 0.156” holes below the 1700F00 cabinet to secure the instrument to the shelf. For Protruding Front Molding: Cut hole in panel the same size as the opening in the monitor cabinet to al-...

  • Page 40: Table 2-1: Power Cord Options

    Installation Mains Frequency and The WFM 601 monitors operate at 50 and 60 Hz, over the range of 90–250 Volts, Voltage Range without operator adjustment. Power Cord Options The WFM 601 is delivered from the factory with a 60 Hz/117 V power cord, unless one of the power cord options was ordered.

  • Page 41: Figure 2-8: Rear-Panel Connectors

    Installation                                              Â...

  • Page 42: Figure 2-9: Rear-Panel Remote Connector

    Installation Remote Connector The rear-panel REMOTE connector is a 25-pin, D-type connector. It provides the input for stereo L and R audio. TTL signal or ground closure to designated pins are the enables. Eight front-panel setups can also be stored and recalled through the REMOTE connector.
  • Page 43 Installation Table 2–2: Remote Connector (Cont.) WFM 601 - Service Manual 2–11...

  • Page 44: Figure 2-10: Rear-Panel Rs232 Connector

    The software disk is a 3.5” (1.44MB) high-density disk. It contains all programs necessary to reload the operating software in the Tektronix WFM 601 to its current software version. If a disk drive other than 3.5” is to be used, have the contents of the disk copied to the desired size disk or to a hard disk directory.
  • Page 45 Installation Performs software upgrade. UPGRADE.EXE Restores calibration constants and user presets. NVRESTOR.EXE Data file used by SOFTWARE.BIN UPGRADE.EXE. Equipment Required to IBM Compatible PC with the following: Perform Software DOS 3.3 or higher operating system. 640 K Bytes Random-Access Memory (RAM). Upgrades High Density Floppy Drive (3.5”/1.44 MB).

  • Page 46: Figure 2-11: Hookup For 9-Pin Pc Connector

    Installation CAUTION. The instrument cannot be used during execution of any of the programs on this disk. If the operation of any of these programs is interrupted, that program must be rerun from the beginning to ensure a proper upgrade. Procedure for Loading Software PC Hookup Connect the WFM 601 rear-panel RS232 connector to the COM 1, 2, 3, or 4 connector on the PC, as shown in Figure 2–11, Figure 2–12, or Figure...

  • Page 47: Figure 2-12: Alternate Hookup For 9-Pin Pc Connector

    Installation 9-Pin Male Connector 9-Pin Female Connector RDATA TDATA Figure 2–12: Alternate Hookup for 9-Pin PC Connector 25-Pin Female Connector 9-Pin Male Connector Figure 2–13: Wiring Adapter for PC with 25-Pin Connector 1. Run NVSAVE (Execution time <1 minute) a. Turn on the WFM 601. NOTE.
  • Page 48 Installation CAUTION. The disk is not write protected in order to execute “NV SAVE”. Do not place in write protect mode. prompt, type “B:” and c. At the ENTER. d. Type . When asked for the port, respond with “NVSAVE” ENTER the number of the port you are using.
  • Page 49 Installation prompt, type “A:” and b. At the ENTER. c. Type . When asked for the port, respond “UPGRADE” ENTER with the number of the connector you are using. d. Wait for the message that the program execution is completed. e.
  • Page 50 Installation WFM 601 - Service Manual 2–18...

  • Page 51: Operating Instructions

    Getting Started The Tektronix WFM 601 Serial Digital Component Monitor has been designed for ease of operation. If you have previous experience with waveform monitors and vectorscopes, you may be able to operate the instrument without referring frequently to this section.

  • Page 52: Figure 2-14: Wfm 601 Front Panel

    Operating Instructions 2. Plug the instrument in and switch it on. The On/Standby (POWER) switch is on the bottom-right corner of the front panel. 3. Select the CONFIG menu with its front-panel button and adjust the parameters as required for your particular installation. AUDIO VIDEO DISPLAY VECTOR...

  • Page 53: Figure 2-15: The Crt Menu, With The Bezel Controls And Buttons

    Operating Instructions General Menu Information The WFM 601 menus are almost self-explanatory. The next few paragraphs describe the general techniques. To get started, press the appropriate MENU button (on the far right of the front panel) to call up one of the on-screen menu readouts.

  • Page 54: Table 2-3: The Available Display Modes

    Operating Instructions Moving Between Menus Selecting a second menu removes the present menu display, but the functions typically remain active (with the menu LED remaining lighted to show this state). To reinstate a menu display, push that menu button again. CRT, PRESET, and CONFIG menus will be exited completely when another menu button is pushed.
  • Page 55 Operating Instructions Vector The vector mode presents an XY plot of demodulated chrominance phase and amplitude. The angle represents chrominance phase and the distance from the center represents chrominance amplitude. A bezel control adjusts vector phase Waveform The waveform monitor portion of the instrument provides a voltage-versus-time display of the video signal.

  • Page 56: Displaying A Signal

    Operating Instructions Displaying a Signal The paragraphs below describe how to use the various front-panel buttons to display exactly the signal or signals you want. Inputs There are two rear-panel loop-through serial digital inputs. The inputs can be displayed singly or in several different combinations. Only one input selection can be made at a time.

  • Page 58: Figure 3-1: Power Supply Block Diagram

    Block Diagram Description The WFM601 is a serial digital component monitor. Its inputs are serial only, and it offers no signal filters except a differentiated step filter. It provides waveform, parade, component vector, bowtie, lightning, and diamond displays. In addition there is a transcoded output providing GBR or Y, P outputs to drive component picture monitors.

  • Page 59: Block Diagram 1 Input And Waveform Monitor

    Theory of Operation Block Diagram 1 Input and Waveform Monitor This block diagram contains the serial inputs, outputs, and the vertical and horizontal amplifiers along with the crt and blanking. Serial Input/Output The component serial digital video signal is input through buffered, 75W compensated bridging loop-through circuits.
  • Page 60 Theory of Operation The component analog outputs of the three signal DACs are input to anti-aliasing Reconstruction Filters. The dc offsets of the component analog (Y, P outputs, from the filters, are controlled by the Microprocessor and a 16 output DAC.

  • Page 61: Block Diagram 2 Component

    Theory of Operation Horizontal Amplifier The Horizontal Amplifier is a variable gain amplifier with controlling inputs from either the Microprocessor or the Line Rate Controller. Stage gain is controlled by the Microprocessor-generated control voltages. Magnification is switched by a signal from the Line Rate Controller. An offset voltage horizontally positions the display.

  • Page 62: Block Diagram 3 Microprocessor And Line Rate Controller

    Theory of Operation GBR to Diamond GBR signals from the Color Difference to GBR Transcoder are input to the GBR Transcoder and Mode to Diamond Transcoder to be matrixed and applied to the Component Mode switching. The outputs from the Transcoder are 0.5 times G+B or R or B–G. Switching These outputs drive the vertical and horizontal axes for the diamond display.
  • Page 63 Theory of Operation Readout State Machine The Readout State Machine interprets the readout instructions from the Microprocessor and loads digital data into the DAC. Analog output of the DAC drives the stroke generators to create the readout segments that are displayed on the CRT.

  • Page 64: Circuit Theory

    Circuit Theory The following discusses circuit theory for the WFM 601 Serial Digital Compo- nent Monitor to the component level. It is arranged on a diagram-by-diagram basis for the schematic diagrams located at the rear of the volume. Diagram 1 Serial Inputs Input Amplifiers The serial inputs are high return loss, 75 compensated (external termination...

  • Page 65: Diagram 3 Coprocessor

    Theory of Operation follower, sets the freerun frequency of the internal Voltage-Controlled Oscillator (VCO). Pins 9 through 18 (D0 – D9) are the single-ended, parallel ECL output of the Deserializer. R35 and R36 are 1 k pull-up resistor sets (7 resistors per set). Signal Present Detector The DPR (Data Present) output of U3 (pin 35) drives the gate of Q2, a Field Effect Transistor (FET).
  • Page 66 Theory of Operation Digital Half-Band Filters on Diagrams 5 and 6. The Y Time signal is one of the inputs to the Clock PAL on Diagram 4, which selects the correct Y signal for the color difference signals through the DACs. If incorrect Y is used there will be a color phase shift apparent in the RGB output.

  • Page 67: Diagram 4 Clocks, Power, & Interconnects

    Theory of Operation Diagram 4 Clocks, Power, & Interconnects Phase Detector and Error U16 is a TTL to ECL converter whose noninverting output drives one input of Amplifier an exclusive OR gate that serves as a phase detector to compare the regenerated clock to the input clock signal.

  • Page 68: Diagram 5 Y Delay, Half-Band Filter, & Dac

    Theory of Operation and R92, which reduces the rise time on the drain of Q1 which lowers the supply radiated noise. CR1 is the supply rectifier. C46, L8, and C47 form the output pi filter. Diagram 5 Y Delay, Half-Band Filter, & DAC Y Delay The luminance channel elements are clocked at twice the clock frequency of the color difference channels.

  • Page 69: Diagram 8 Transcoders & Picture Monitor Outputs

    Theory of Operation The P channel DAC is U19, which converts the 10-bit digital input data to an output analog current. The enable signal, from the Clock PAL, is at twice the color difference frequency (13.5 MHz). R256 is a 75 terminating resistance that converts the output analog current to a voltage.

  • Page 70: Table 3-1: Transcoder Signal Mixing

    Theory of Operation the input amplifiers drive the Transcoder and inputs to the horizontal and vertical signal processing amplifiers on Diagram 9. RGB Transcoder Driven by Input Amplifiers, the Color Difference to RGB Transcoder consists of three operational amplifiers (U41, U51, and U61) and resistance matrices. The operational amplifiers and the resistance matrices are signal mixers.
  • Page 71 Theory of Operation G/Y component of the Monitor Output to increase in brightness whenever a gamut limit is exceeded, if the Monitor gamut alarm is enabled. A gamut inhibit signal is generated by the Coprocessor, Diagram 4, which inhibits the Monitor gamut alarm brightup, if the function is not enabled. If the brightup is enabled, the gamut inhibit signal toggles on and off at about 2 Hz, which causes the brightup of gamut errors to flash on the monitor.

  • Page 72: Table 3-2: Component Display Output Switching

    Theory of Operation Diagram 9 Lightning, Vector, & Bowtie Switching Input Switching Signal selection for the component displays is accomplished by a series of four-element switches (U101, U103, & U151) activated by the Controller switch enable signals SW1 – SW11. Signals to input for the various displays are routed to the vertical inverting and noninverting amplifier inputs and to the noninvert- ing horizontal amplifier as shown in Table 3–2.

  • Page 73: Diagram 10 Control & Daculator

    Theory of Operation either TOP or BOTTOM (from the Controller on Diagram 10) is asserted, causing the output of U125A or U125B to go low and close either U124A or U124D. The clamped amplifiers, U126A and U126B, have a dc level (V Offset from the DAC on Diagram 10) at their noninverting inputs.

  • Page 74: Diagram 11 Vertical Input

    Theory of Operation U204 is an asynchronous register that handles transactions that do not need to be synchronized to the instrument sync. U210 is an 8-bit serial in/parallel out shift register whose outputs are asynchro- nous switching control lines. They control display switching (Diagrams 8 and 9).

  • Page 75: Diagram 12 Vertical Output

    Theory of Operation controlled by two control lines and the chip selects. If neither chip select (REFCH SEL 2 or 3) is asserted, there will be no output. This condition exist when external reference is selected. When the INT EXT control line is asserted, it goes low and U70D and U70A close to drive Q19 from the rear panel EXT REF input.

  • Page 76: Diagram 13 Horizontal

    Theory of Operation frequency response characteristics of the CRT are compensated for by a network between the VOUT+ and VOUT– terminals of U55. Vertical Deflection Q10 and Q16 are power transistors that drive the CRT deflection plates. A sample of the horizontal output voltage is fed into the emitters of the transistors to compensate for CRT orthogonality error.

  • Page 77: Diagram 14 Microprocessor

    Theory of Operation signal. U47D is an inverter to generate the –H RO SIG. Output is controlled by the H RO SEL signal from the Line Rate Controller. Horizontal levels, such as Gain and Position from the DACs (Diagram 17), and control signals, such as Mag from the Line Rate Controller (Diagram 15), are input through U56, the Horizontal Amplifier.

  • Page 78: Diagram 15 Dynamic Control

    Theory of Operation The Data Buffers, U15 and U19, are bidirectional. When the DIR control line is low data from the NOVRAM, RAM, and FLASH EPROM is read into the Microprocessor data bus on the DATA EN2. When DIR is pulled high, and DATA EN2 is pulled down (by the Decoder), the Microprocessor writes to the Data Buffers on the data bus.

  • Page 79: Diagram 16 Readout

    Theory of Operation are identical, one is driven by the internal video that drives the vertical deflection circuits and the other is driven by the selected reference input. Line Rate Controller The Line Rate Controller (U34) is a programmable logic device. It is capable of logic and timing simulations.

  • Page 80: Diagram 17 Dacs & Serial

    Theory of Operation for the sample-and-holds is identical and determined by a single RC circuit (R376 and C87). The output of the sample-and-hold drives an integrator, U48C or U48D, whose output is a negative-going saw tooth waveform. Charging current is controlled by the Shape adjustment (R134 or R135). The output of the Readout Stroke Generator drives the Vertical and Horizontal deflection circuits when readout is enabled.

  • Page 81: Diagram 19 Z-Axis & Control

    Theory of Operation Remote U90 and U91 are 8-bit parallel-load, serial-output shift registers. Levels at the parallel inputs are loaded into the shift register and clocked out by the serial clock (BSCK). U90 and U91 are cascaded by taking the serial output of U91 and tying it to the serial input of U90.

  • Page 82: Diagram 20 Front Panel

    Theory of Operation The VPP1 supply is a +12V source used to program the Flash EPROM. For normal operation P4 is in the 2-3 position. U20 is a voltage sensing regulator whose output voltage is established by R46 and R47. Diagram 20 Front Panel Switching There are 28 momentary contact switches arranged in a matrix.
  • Page 83 Theory of Operation charge C62, which provides power to U6 until the primary housekeeping winding provides power through CR22. VR3 is the source of the +5 V required by the transformer driver to operate the Power switch. When power is connected to the instrument, it gets enough current from R119 and R121 to Zener and provide the power required to operate the transformer driver oscillator.
  • Page 84 Theory of Operation Snubber The primary winding (pins 1 and 2) has a shadow winding (pins 3 and 4) with one end connected to ground. The B+ end of the primary winding is in phase with the grounded end of the shadow winding. The signal ends of both windings are connected together through C51.

  • Page 85: Diagram 22 High Voltage Power Supply

    Theory of Operation U7D prevents the power supply from running on in the event of a +5 V supply short. Shorting the 5 V supply disables the optoisolator, which causes the error voltage to fall below 2.5 V. After a short period of time C65 discharges and causes the output of U7D to go low and shut down the power supply.
  • Page 86 Theory of Operation the CRT, with the front-panel FOCUS control set to mid range. Once the Center Focus adjustment has been set, adjusting the front-panel FOCUS control changes the voltage at the bottom end of the divider and, consequently, the voltage on the CRT focus anode.
  • Page 87 Theory of Operation WFM 601 - Service Manual 3–30...

  • Page 89: Performance Verification

    Electrical Instruments 1. Test Oscilloscope Vertical Amplifier: 100 MHz Bandwidth, 2 mV Sensitivity. For example: Tektronix 2245A 100 MHz Oscilloscope. 2. Oscilloscope Probe For example: Tektronix P6101A X1 Passive Voltage Probe. WFM 601 - Service Manual 4–1...
  • Page 90 4. Leveled Sinewave Generator Output Level Range: –11.55 dBm (200 mV) to 0.43 dBm (800 mV). Frequency: 50 kHz to 10 MHz. For example: Tektronix SG503 installed in a TM500-Series Power Module. 5. Frequecy Counter Range: 10 Hz to 10 MHz. Accuracy: 0.001%.
  • Page 91 - 75 End–line Terminations, 26 dB to 300 MHz (Tektronix Part for use on Serial Inputs. No. 011–0163–00) - 75 End-line Termination (Tektronix Part No. 011–0102–00) for use on the External Reference Input. Termination (Tektronix Part No. 011–0103–02). 13. Coaxial Cable Three 75 cables required, two 50 cables required.

  • Page 92: Calibration Data Report

    Performance Verification 16. Audio Cable Adapter (Shown in Figure 4–1.) FUNCTION GENERATOR BLACK GROUND 25-PIN D CONNECTOR Figure 4–1: Audio Cable Adapter Calibration Data Report The Calibration Data Report that follows can be used to document instrument performance. In addition it can be used as a short form Performance Check for those familiar with the Performance Verification Procedure.
  • Page 93 Performance Verification Calibration Data Report Instrument WFM601 Cal. Date_____________________ Serial Number___________________ Certificate Number ______________ Technician____________________ Procedure 070–8876–00 Revision Date______________________________ Step Operation Minimum Tolerance Maximum Tolerance Incoming Outgoing Trace Rotation Range + & – 1 ––– Calibrator Timing Fre- 999900 Hz...
  • Page 94 Performance Verification Step Operation Minimum Tolerance Maximum Tolerance Incoming Outgoing Bowtie Interchannel –2 ns +2 ns Matching Analog Audio Mode Full –0.5 dB +0.5 dB Scale Accuracy Audio X/Y Input Phase ––– Match Audio Bandwidth –3 dB at 500 kHz –––...

  • Page 95: Verification Procedure

    Enter the CRT menu and adjust the controls for best viewing of the display. Exit the CRT menu. g. Set the WFM601 front-panel controls and menu selections to the factory settings by entering the PRESET menu and selecting FACTORY. 2. Check Power Supply Operation REQUIREMENT –...
  • Page 96 Performance Verification c. CHECK – that the TRACE ROTATE control moves the trace + & – 1 from the graticule baseline. d. Adjust the TRACE ROTATE control for a level trace across the graticule baseline. e. From the CRT menu select DISPLAY. CHECK –...
  • Page 97 Performance Verification Remove the ground connection and the frequency counter probe from A3R274. 6. Check Timing and Linearity REQUIREMENT – Sweep Timing Accuracy: 5 s/Div. (1 Line), 10 s/Div. (2 Line), 0.2 s/Div. (1 Line + MAG), 1.0 s/Div. (2 Line + MAG), Sweep Linearity: 1 Line and 2 Line sweeps unmagnified or magnified, a.
  • Page 98 Performance Verification b. Select 1 FIELD SWEEP. c. CHECK – for approximately 12 divisions of signal. d. Select 2 FIELD SWEEP. e. CHECK – for approximately 12 divisions of signal. Select 2 LINE SWEEP (10 S/Div). g. CHECK – for approximately 12 divisions of signal. h.
  • Page 99 Performance Verification e. CHECK – the vertical amplitude of the scope display for 0.72 to 0.88 volts. Remove the cable from the SERIAL OUT. g. Enter the GAIN menu and turn on VARIABLE. h. Select X5 and adjust VAR GAIN to make the last step of the color bar staircase 4 divisions high.

  • Page 100: Figure 4-2: Timing Cursor Check

    Performance Verification g. Set the Time1 cursor to the graticule left cardinal mark, and set the Time2 cursor to the graticule right cardinal mark. See Figure 4–2. 100% LEFT RIGHT CARDINAL CARDINAL MARK MARK –.1 –.2 –.3 TIME 2 TIME 1 TRACK COMPONENT ANALOG 2% &...
  • Page 101 CHECK – the amplitude of the signal on the test oscilloscope for 679 to 721 mV peak–to–peak. m. Move the 75 cable, that leads to the test oscilloscope to the WFM601 MON OUT R. n. CHECK – the amplitude of the signal on the test oscilloscope for 679 to 721 mV peak-to-peak.
  • Page 102 Performance Verification Horizontally and vertically position the display over the center 8 divisions of the graticule 0 line. CHECK – for 8 divisions of deflection 0.4 minor divisions. 12. Check Vector Mode Bandwidth Matching REQUIREMENT – Horizontal-to-Vertical Bandwidth Matching: 2 loop opening at 500 kHz or 2 MHz.

  • Page 103: Figure 4-3: Hf Bowtie Magnified To Measure Null Offset

    Performance Verification CHECK – that there are dots in all targets. 15. Check Bowtie Interchannel Matching REQUIREMENT – Null must occur within 2.0 ns of center marker. a. Select the high frequency (2.5 MHz) bowtie signal from the serial digital component generator.

  • Page 104: Table 4-1: Audio Values

    Performance Verification d. Connect the function generator output via the audio remote cable adapter to the WFM 601 rear-panel REMOTE INPUT connector pins 8 and 10. Ground pins 9 and 11 of the REMOTE INPUT connector. e. Set the function generator for a sinewave output. Adjust the frequency to 1 kHz and the amplitude to 2.19 V.
  • Page 105 Performance Verification Remove the function generator signal from the WFM 601 REMOTE connector. 18. Check Serial Receiver Equalization Range REQUIREMENT – Proper operation with up to 17 dB loss at 135 MHz using coaxial cable having 1/ loss characteristics (800 mV launch amplitude). a.
  • Page 106 Remove the precision high-frequency terminator from the RF Bridge. q. Connect the Device Under Test connector on the RF Bridge to one side of the WFM601 EXT REF loop through input. Terminate the remaining side of the loop-through with the precision high-frequency terminator used in step p.
  • Page 107 Performance Verification a. Remove the lower frequency RF Bridge and replace it with the higher frequency bridge. Reconnect the cables. b. Set the spectrum analyzer Span/Div to 50 MHz and the Resolution Bandwidth to 300 kHz. c. Set the spectrum analyzer Reference Level to the first major division down from the top on the analyzer display.
  • Page 108 Performance Verification s. CHECK – that the Reference Level Readout on the spectrum analyzer is 25 dBm. Turn WFM 601 POWER to STANDBY. u. CHECK – that the Reference Level Readout on the spectrum analyzer is 15 dBm. v. Turn WFM 601 POWER ON. w.
  • Page 109 Performance Verification Turn on the CH B display. Adjust the Reference Level for a screen display. k. Turn off spectrum analyzer CH A and CH D display. Note the reference level of the straight trace. m. Select B Save A. n.
  • Page 110 Performance Verification WFM 601 - Service Manual 4–22...

  • Page 112: Adjustment Procedures

    Adjustment Procedures The Adjustment Procedures for the WFM601 are loaded on the 3.5 inch high-density disk (Tektronix Part No. 063-1796-00) included in this manual. The instrument software version must be 1.3 or greater to use this Adjustment Procedure. To determine the software version loaded in the instrument check the lower right corner of the CALIBRATE submenu of the front-panel selected CONFIG menu.
  • Page 113 Adjustment Procedure Time Base: 10 ns/div to 5 ms/div sweep speeds, Triggering to 150 MHz. For example: A Tektronix 2465B Oscilloscope. Also 10X probe, P6109B, and 1X probe, P6119B. 3. Digital Component Television Signal Generator For example: Tektronix TSG-422 Digital Component Generator, Option 1S.

  • Page 114: Figure 5-1: Jumper Cable Adapter

    Adjustment Procedure 9. Jumper Cable Adapter FEMALE PLUG JUMPER CONNECT PIN 1 OF SIGNAL THE PLUG JUMPER TO PIN 1 OF THE GROUND CONNECTOR. Figure 5–1: Jumper Cable Adapter 10. Audio Cable Adapter 25-Pin Male Connector FEMALE SIGNAL GROUND Figure 5–2: Audio Cable Adapter WFM 601 - Service Manual 5–3...

  • Page 115: Figure 5-3: Rs232 Cable Hookups For 9-Pin Pc Connector

    Adjustment Procedure 11. RS232 Cable Connector or adapter which allows hookup between the PC and the waveform monitor. Figure 5–3 shows the cable connections for a 9-pin PC connector. For a 25-pin to 9-pin adapter, construct one as shown in Figure 5–4 or purchase an RS232 DTE cable or adapter.

  • Page 116: Figure 5-4: Rs232 Cable Hookups For 25-Pin Pc Connector

    Adjustment Procedure 25-Pin Female 9-Pin Male Connector Connector 25-Pin Female 9-Pin Male Connector Connector Figure 5–4: RS232 cable hookups for 25-pin PC connector Optional Equipment 12. Magnifying Glass For aid in viewing CRT graticule as necessary. WFM 601 - Service Manual 5–5...

  • Page 117: Getting Started

    Connect the WFM601 to power and turn on the instrument. NOTE. Instrument Power The WFM601 power switch must be set to ON before the Adjustment Procedures program is started. If the instrument is not turned on, the PC will not be able to establish communications with the instrument.

  • Page 118: Functional Description Of Pc Display

    Adjustment Procedure d. The program will prompt the user for a few parameters before the actual adjustment steps start. Functional Description of the PC Display Figure 5–5: Typical Adjustment Procedures PC screen display WFM 601 - Service Manual 5–7...
  • Page 119 Adjustment Procedure Display Description This box lists the instrument type and which procedure is being performed. This box lists the current step number and how many steps there are in the procedure being performed. This box only appears when the procedure being performed is a saved job. The name of the job is displayed in the box.

  • Page 120: Circuit Board Adjustment Locations

    Adjustment Procedure This box appears when the current step has an adjustment controlled by the PC Up/Down arrow keys. The box serves as a reminder for which arrow keys control the adjustment. This box appears when the current step has an adjustment controlled by the PC Up/Down arrow keys.

  • Page 121: Figure 5-7: A3 Main Board

    Adjustment Procedure THESE PARTS ARE NOT ADJUSTED R168 C131 R182 C135 C137 R183 C151 C154 R134 R135 Figure 5–7: A3 Main Board –8 Figure 5–8: A5 Deserializer Board PIN 1 C711 R312 J300 C308 C721 C136 C133 R410 C407 C731 R510 C507 Figure 5–9: A7 Component Board...

  • Page 122: Waveform Illustrations

    Adjustment Procedure Figure 5–10: A8 DAC Board Waveform Illustrations 100% –.1 –.2 –.3 COMPONENT ANALOG 2% & 4% K Figure 5–11: Graticule horizontal center marks WFM 601 - Service Manual 5–11...

  • Page 123: Figure 5-12: Adjusting Post Readout And Gain

    Adjustment Procedure 100% –.1 –.2 –.3 COMPONENT ANALOG 2% & 4% K Figure 5–12: Adjusting post readout and gain 50mV 500us Figure 5–13: Adjusting the vertical interval blanking level offset WFM 601 - Service Manual 5–12...

  • Page 124: Figure 5-14: Gamut Limit Pulses

    Adjustment Procedure 200mV 10us Figure 5–14: Gamut limit pulses 100% –.1 –.2 –.3 COMPONENT ANALOG 2% & 4% K Figure 5–15: Checking the on-screen frequency response WFM 601 - Service Manual 5–13...

  • Page 125: Figure 5-16: Adjusting The Bowtie Display

    Adjustment Procedure 100% –.1 –.2 –.3 COMPONENT ANALOG 2% & 4% K Figure 5–16: Adjusting the Bowtie display Figure 5–17: Adjusting the Lightning display electronic graticule WFM 601 - Service Manual 5–14...

  • Page 126: Figure 5-18: Adjusting Diamond Display Phase

    Adjustment Procedure Figure 5–18: Adjusting Diamond Display phase 100% –.1 –.2 –.3 COMPONENT ANALOG 2% & 4% K Figure 5–19: Adjusting the position of the Audio graticule WFM 601 - Service Manual 5–15...

  • Page 127: Tsg422 Signal Illustrations

    Adjustment Procedure TSG422 Signal Illustrations The TSG422 signal illustrations on the following pages are provided as a reference. They are shown in a three channel parade as they would appear on the WFM 601 in the Waveform display mode. 100% –.1 –.2 –.3...

  • Page 128: Figure 5-21: 100% Color Bars Without Level Reference Signal

    Adjustment Procedure 100% –.1 –.2 –.3 COMPONENT ANALOG 2% & 4% K Figure 5–21: 100% color bars without level reference signal 100% –.1 –.2 –.3 COMPONENT ANALOG 2% & 4% K Figure 5–22: 2.5 MHz bowtie signal WFM 601 - Service Manual 5–17...

  • Page 129: Figure 5-23: 5-Step Staircase Signal

    Adjustment Procedure 100% –.1 –.2 –.3 COMPONENT ANALOG 2% & 4% K Figure 5–23: 5-step staircase signal Amplitude smaller than the limit ramp signal. 100% –.1 –.2 –.3 COMPONENT ANALOG 2% & 4% K Figure 5–24: Oversized ramp signal WFM 601 - Service Manual 5–18...

  • Page 130: Figure 5-25: Limit Ramp Signal

    Adjustment Procedure Amplitude larger than the oversized ramp signal. 100% –.1 –.2 –.3 COMPONENT ANALOG 2% & 4% K Figure 5–25: Limit ramp signal 100% –.1 –.2 –.3 COMPONENT ANALOG 2% & 4% K Figure 5–26: Shallow ramp signal WFM 601 - Service Manual 5–19...

  • Page 131: Figure 5-27: 100% Line Sweep Signal

    Adjustment Procedure 100% –.1 –.2 –.3 COMPONENT ANALOG 2% & 4% K Figure 5–27: 100% line sweep signal 100% –.1 –.2 –.3 COMPONENT ANALOG 2% & 4% K Figure 5–28: Multiburst signal WFM 601 - Service Manual 5–20...

  • Page 133: Maintenance

    Maintenance This section discusses the various options available for servicing the Tektronix WFM 601 Serial Digital Component Monitor. It also contains instructions for preventive maintenance, general troubleshooting, and corrective maintenance. If the instrument does not function properly, troubleshooting and corrective measures should be taken immediately to circumvent additional problems.
  • Page 134 Additional Air Filters. Additional air filters can be ordered directly from Tektronix. The part number for the air filters is listed with the optional accessories at the rear of the Replaceable Mechanical Parts list, at the back of the book.

  • Page 135: Table 6-1: Static Susceptibility

    Maintenance Static-Sensitive This instrument contains electrical components that are susceptible to damage Components from static discharge. Static voltages 1 kV to 30 kV are common in unprotected environments. Table 6–1 shows the relative static discharge susceptibility of various semiconductor classes. Table 6–1: Static Susceptibility Relative Susceptibility Levels Voltage...
  • Page 136 Maintenance NOTE. A 2% RMA flux content solder is recommended for making repairs in this instrument. Cleaning of rosin residue is not recommended. Most cleaning solvents tend to reactivate the rosin and spread it under components where it may cause corrosion under humid conditions. The rosin residue, if left alone, does not exhibit these corrosive properties.

  • Page 137: Corrective Maintenance

    1. Ensure that the malfunction exists in the instrument. This is done by making General Troubleshooting sure that the instrument is operating as intended by Tektronix (see Operating Techniques Instructions), and by checking that a malfunction has not occurred up stream from the waveform monitor.

  • Page 138: Specific Troubleshooting Techniques

    Maintenance CAUTION. Always remove the assembly from the instrument prior to attempting to replace a soldered-in component. See Corrective Maintenance for the correct procedure. Line Fuse Replacement This instrument is protected with an F-type cartridge fuse, located internally on the Power Supply (A1) circuit board. See Figure 6–1. The fuse should only be replaced with the correct type and value.

  • Page 139: Table 6-2: Power Supply Fault Symptoms

    Maintenance WARNING. Read Instructions! Do not attempt to troubleshoot this Power Supply without reading the following instructions. This power supply presents special troubleshooting problems, if a fault occurs. The Troubleshooting procedure that follows will help to isolate a problem to a specific circuit.

  • Page 140: Table 6-3: Low Volts Supply Voltages

    Maintenance Table 6–2: Power Supply Fault Symptoms (Cont.) Symptom Procedure +5 V not regulating Error Amplifier Check Improper CRT display High Volts Supply Checks Low Volts Supply 1. Preliminary Checks a. A properly functioning and loaded Low Volts Supply will output the voltages listed in Table 6–3.
  • Page 141 Maintenance c. With the negative lead of the digital multimeter connected to TP3 and the positive lead connected to TP2, measure the circuit resistance. A resistance of less than 20 k indicates a shorted mosfet (Q14). If the mosfet is shorted, replace it and perform the Control Circuit Check. d.

  • Page 142: Table 6-4: Control Circuit Test Points

    Maintenance Table 6–4: Control Circuit Test Points Circuit Location Signal U6, pin 1 Approximately 5 Vdc U6, pin 2 Approximately 1 to 2 Vdc U6, pin 3 U6, pin 4 80 kHz triangle wave, 2 V p-p U6, pin 6 80 kHz square wave, 18 V p-p c.

  • Page 143: Table 6-5: Shut Down Logic Levels

    Maintenance c. Using the digital multimeter measure the voltage at U3, pin 6. It should be 0 V. d. Using the digital multimeter measure the voltage at U3, pin 1. It should be 2.5 V. e. Set the variable Power Supply to 5.4 V. Using the digital multimeter measure the voltage at U3, pin 6.

  • Page 144: Table 6-6: High Volts Supply Fault Symptoms

    Maintenance High Volts Supply WARNING. Dangerous potentials exist on this circuit board. Extreme care should be exercised in troubleshooting these circuits. 1. Preliminary Checks a. Table 6–6 lists the High Volts Supply fault symptoms and procedures. Table 6–6: High Volts Supply Fault Symptoms Symptom Procedure Unable to focus CRT using the...

  • Page 145: Tektronix Service Offerings

    CR4. Tektronix Service Offerings Tektronix maintains a service organization that can provide a number of services to assist in maintaining the instrument’s operation at its specified levels. They range from complete repair and adjustment, at a convenient location, to supplying replacement parts.
  • Page 146 Maintenance NOTE. When considering which service offerings best suit the current need, remember that Tektronix provides a limited parts and service warranty for all its products. No customer repairs should be attempted during the warranty period for this instrument. Service Training Tektronix provides service training in a number of programs.

  • Page 147: Table 6-8: Wfm 601 Replacement Circuit Boards

    The following paragraphs and Table 6–8 are intended to assist in ordering the exact circuit board replacement. Note that this information is important whether you are ordering a circuit board from the Moduleexchange Center or as a new replacement part from Tektronix. Table 6–8: WFM 601 Replacement Circuit Boards Circuit...
  • Page 148 (if known) ensures that you will receive the module required to return the instrument to complete operation. Factory Replacement Replacement parts are available through the local Tektronix field office or Parts representative. However, many common electronic parts are available through local sources.

  • Page 149: Etched Circuit Boards

    The rosin residue, if left alone, does not exhibit these corrosive properties. Figure 6–2 shows the locations of all circuit board assemblies for the WFM601 Serial Digital Component Monitor. Figure 6–2: Instrument Etched Circuit Board Assemblies WFM 601 - Service Manual 6–17...
  • Page 150 Maintenance Major Assembly Signals and power supply voltages are passed through the instrument with a Interconnection system of interconnecting cables. The connector holders, on these cables, have numbers that identify terminal connectors; numerals are used from pin 2 up. A triangular key symbol is used to identify pin 1 on the circuit board to assist in aligning connector with correct square pins.

  • Page 151: Mechanical Diassembly/Assembly

    Maintenance Mechanical Disassembly/Assembly The instructions contained here are for disassembly. Reassembly is performed by reversing the order of the steps used to disassemble the instrument. WARNING. Before attempting any disassembly of the instrument be sure to disconnect the power cord and wait until DS7 on the Power Supply circuit board (A1) extinguishes.
  • Page 152 NOTE. All screws, unless otherwise noted, are TORX screws and can be removed with a T15 screwdriver tip (Tektronix part number 003-0966-00). The exception is #2 Pozidrive screws which can be removed with a #1 Pozidrive tip (Tektronix part number 003-0443-00).
  • Page 153 Maintenance Figure 6–5: Replacing Graticule Light Bulbs 3. To install a bulb, hold it with the tweezers or fingers as described in step two, position it in front of the socket, and push the bulb until it snaps into place. 4.
  • Page 154 Maintenance CRT Removal 1. Remove the bezel. WARNING. The CRT may retain a dangerous charge. Ground the conductor of the anode to discharge the CRT. Do not allow the conductor to touch your body or any circuitry. 2. Disconnect the anode, by separating the connector. Do not touch the exposed tip of the connector.
  • Page 155 Maintenance WARNING. The CRT is a high vacuum device and must be handled with care. Safety glasses, gloves, and protective clothing should always be worn when handling CRTs. 4. Hold one hand in front of the CRT. Grasp the CRT just behind the anode cap and push the CRT straight out (some pressure is needed).
  • Page 156 Maintenance Removing the Rear Panel 1. Remove the nine rear screws. See Figure 6–7. and the Input and BNC Circuit Boards Figure 6–7: Removing the Rear Panel And Input/BNC Assembly 2. Unplug A3J13 and A3J12 on the Main circuit board. 3.
  • Page 157 Maintenance Figure 6–8: Disassembling Input/BNC Assembly A4/A4–A1 CAUTION. The Input circuit board assembly uses surface mount components. Do not attempt to solder on this board unless you have been trained in micro soldering and have the proper tools available. 9. To replace the rear panel and Input assembly, reverse the procedure. WFM 601 - Service Manual 6–25...
  • Page 158 Maintenance Removing the Front Panel 1. Remove the blue multiwire connector from A3J1. and the Front Panel 2. Push down on the clip located on the top of the front-panel assembly and Circuit Board push outward on the upper part of the assembly. See Figure 6–9. Figure 6–9: Removing the Front–panel Assembly 3.

  • Page 159: Table 6-9: Main Board Plug Connections

    Maintenance Figure 6–10: Front Panel Circuit Board Assembly b. The board should now separate from the front panel, spacer, and the keypad. 5. To re-assemble, reverse the procedure. Removing the Main Board 1. Remove the plugs from the connectors as shown in Table 6–9. Table 6–9: Main Board Plug Connections Plug Number...
  • Page 160 Maintenance 3. Unsolder the four (red, green, blue, and brown) CRT deflection leads. 4. Slip the CRT and trace rotation leads through the appropriate holes in the Main board. 5. Use a -inch nut driver or box end wrench to remove the mounting studs for the rear-panel RS232 and REMOTE connectors.
  • Page 161 Maintenance Removing the Power 1. Be sure that the instrument is unplugged from the mains and that DS7 on the Supply Board Power Supply is extinguished. WARNING. Circuitry beneath the plastic shield is at line potential. Do not remove this shield when instrument is plugged into the mains source. DS7 can be used as an indicator.
  • Page 162 Maintenance 4. Unplug A1J1, A1J2, and A1J5 on the Power Supply board. 5. Remove the four screws that hold the Power Supply board down, and the three screws that hold the plastic shield in place. See Figure 6–12. 6. Use a -inch nut driver or box end wrench to remove the 3 studs that support the plastic shield.
  • Page 163 Maintenance 7. Remove the circuit board. 8. To reinstall the circuit board reverse the procedure. Removing the 1. Unplug the cable to A4J5 (Input circuit board). Coprocessor, Component, 2. Use a pair of long nose pliers to loosen and remove the plugs from A7J9, and DAC Boards A7J14, A7J12, and A7J13.
  • Page 164 Maintenance Figure 6–15: Securing the Component,Coprocessor, and DAC Board 4. Pull out the three circuit-board module. 5. Separate the Component, Coprocessor, and Digital-to-Analog (DAC) circuit boards: a. Remove the plugs from A8J11, A6J1, A6J2, A6J7, and A6J8. See Figure 6–14. b.
  • Page 165 Maintenance SHIELD COMPONENT SHIELD COPROCESSOR Figure 6–16: Separating the Component, Coprocessor, and DAC Boards c. Remove the plug from A8J10. d. Use a -inch nut driver or box end wrench to remove the four stand offs and two nuts securing the DAC circuit board. e.

  • Page 166: Repackaging

    Repackaging Identification Tag If the instrument is to be shipped to a Tektronix Service Center for service or repair, attach a tag to the instrument showing: 1. Owner (with complete address) and the name of the person at your firm that can be contacted.
  • Page 167 Maintenance 2. Surround the instrument with polyethylene sheeting to protect the finish. 3. Cushion the instrument on all sides by tightly packing dunnage or urethane foam between the carton and the instrument. Allow three inches on all sides for cushioning. 4.
  • Page 168 Maintenance WFM 601 - Service Manual 6–36...

  • Page 170: Options

    1700F07 Utility Drawer for use with 1700F05 Power Cord Options Any of the following power cord options can be ordered for the WFM601. If no power cord option is ordered, instruments are shipped with a North American 125 V power cord.

  • Page 171: Cabinets

    There are two optional cabinets and a dual rack adapter available for the installation of these instruments. Only a brief description is provided here; for more information contact a Tektronix field office or distributor. Plain Cabinet (1700F00) This is a plain, silver-gray cabinet that is designed for permanent mounting. See Figure 7–1.

  • Page 172: Carrying Case (1700F02)

    Options air to and from these ventilating holes. A dimensional drawing of this cabinet, that can be used as an installation guide is located in “Installation.” Figure 7–1: The 1700F00 Metal Cabinet Carrying Case (1700F02) This is a gray, metal cabinet, with feet, front elevating bail, and carrying handle designed for portable applications.

  • Page 173: Side-By-Side Rack Adapter (1700F05)

    Options Side-by-Side Rack This is a 19-inch, rack mounting adapter that accepts two 1700–Series instru- Adapter (1700F05) ments in a side-by-side configuration. See Figure 7–3. These instrument cabinets are 1700F00 that are connected together for this installation. Figure 7–3: A 1700F05 with Two Half-rack instruments Blank Panel (1700F06) If only one 1700–Series instrument is to be installed in the Side-by-Side Rack Adapter, a blank panel (1700F06) can be installed for air flow protection and...

  • Page 174: Utility Drawer (1700F07)

    Any of these items can be ordered with the WFM 601 Serial Component Monitor. In addition, these items are available, along with accessory items listed in this manual, from your nearest Tektronix field office or distributor. Be sure to include both the name and number of any Field Upgrade Kits ordered.
  • Page 175 Options WFM 601 - Service Manual 7–6...
  • Page 178 WFM 601. Use this list to identify and order replacement parts. There is a separate Replaceable Electrical Parts list for each instrument. Parts Ordering Information Replacement parts are available from or through your local Tektronix, Inc., Field Office or representative. Changes to Tektronix instruments are sometimes made to accommodate improved components as they become available and to give you the benefit of the latest circuit improvements.
  • Page 179 Chassis-mounted parts and cable assemblies have no assembly number prefix and are located at the end of the electrical parts list. Tektronix Part No. Indicates part number to be used when ordering replacement part from (Column 2) Tektronix.
  • Page 180 Replaceable Electrical Parts Cross Index – Mfr. Code Number To Manufacturer Mfr. Code. Manufacturer Address City, State, Zip Code S4246 JAPAN SERVO CO LTD 7 KANDA TOKYO JAPAN MITOSHIRO–CHO CHIYODA–KU TK0435 LEWIS SCREW CO 4300 S RACINE AVE CHICAGO IL 60609–3320 TK0509 H V C INC 600 S MILWAUKEE STREET...
  • Page 181 Replaceable Electrical Parts Mfr. Code. Manufacturer Address City, State, Zip Code 04222 AVX CERS 19TH AVE SOUTH MYRTLE BEACH SC 29577 DIV OF AVX CORP P O BOX 867 04713 MOTOROLA INC 5005 E MCDOWELL RD PHOENIX AZ 85008–4229 SEMICONDUCTOR PRODUCTS SECTOR 05292 ITT COMPONENTS DIV CLIFTON NJ...
  • Page 182 Replaceable Electrical Parts Mfr. Code. Manufacturer Address City, State, Zip Code 34335 ADVANCED MICRO DEVICES 901 THOMPSON PL SUNNYVALE CA 94086–3413 PO BOX 3453 37964 GENNUM CORPORATION 970 FRASER DRIVE BURLINGTON, ONTARIO, CANADA L7R 3Y3 PO BOX 489, STA A 44648 SAMSUNG SEMICONDUCTOR INC 3725 N FIRST STREET...
  • Page 183 76493 BELL INDUSTRIES INC 19070 REYES AVE COMPTON CA 90224–5825 JW MILLER DIV PO BOX 5825 80009 TEKTRONIX INC 14150 SW KARL BRAUN DR BEAVERTON OR 97077–0001 PO BOX 500 81073 GRAYHILL INC 561 HILLGROVE AVE LA GRANGE IL 60525–5914...
  • Page 184 Replaceable Electrical Parts Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Name & Description Code Number 671–2939–00 B010100 B010115 CIRCUIT BD ASSY:POWER SUPPLY 80009 671293900 671–2939–01 B010116 B010202 CIRCUIT BD ASSY:POWER SUPPLY...
  • Page 185 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A1C25 290–1310–00 CAP,FXD,ALUM:10UF,20%,160V,13 X 20MM 0H1N5 CEJSM2C100M A1C26 290–1277–00 CAP,FXD,AL:10UF,20%,50V,5 X 11;RDL,105 DEG,BULK 0H1N5 CEUSM1H100–E A1C27 283–0339–01 CAP,FXD,CER:MLC;0.22UF,10%,50V,X7R,0.300 X 0.300...
  • Page 186 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A1C74 285–1246–00 CAP,FXD,PPR DI:0.022UF,20%,250VAC, TK0515 PME 289 MB 5220 A1C75 285–1222–00 CAP,FXD,PLASTIC:0.068UF,20%,250V, TK0515 PME 271 M 568 A1C76 281–0775–01...
  • Page 187 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A1CR31 152–0141–02 DIO,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A1CR32 152–0661–00 671–2939–00 671–2939–03 DIO,RECT:FAST RCVRY;600V,3A,200NS 12954 DR850701B (40SL A1CR32 152–1165–00 671–2939–04 DIO,RECT:ULTRA FAST;600V,4A,50NS...
  • Page 188 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A1Q5 151–0350–03 XSTR,SIG:BIPOLAR,PNP;150V,600MA,100MHZ,AMPL 04713 2N5401RLRP A1Q6 151–0347–02 XSTR,SIG:BIPOLAR,NPN;160V,600MA,100MHZ,AMPL 04713 2N5551RLRP A1Q7 151–0476–00 XSTR,PWR:BIPOLAR,NPN;100V,3.0A,3.0MHZ,AMPL 04713 TIP31C *MOUNTING PARTS* 210–0406–00 NUT,PLAIN,HEX:4–40 X 0.188,BRS CD PL...
  • Page 189 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A1R36 315–0102–03 RES,FXD,CMPSN:1K OHM,5%,0.25W 50139 CB1025 (CARD PA A1R37 322–3385–00 RES,FXD:METAL FILM;100K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10002F A1R38 311–2239–00 RES,VAR,TRMR:CERMET;100K OHM,20%,0.5W,0.197...
  • Page 190 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A1R95 322–3260–00 671–2939–00 671–2939–00 RES,FXD,FILM:4.99K OHM,1%,0.2W,TC=T0 91637 CCF501G49900F A1R96 322–3034–00 RES,FXD:METAL FILM;22.1 OHM,1%,0.2W,TC=100 PPM 91637 CCF50–2–G22R10F A1R97 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM...
  • Page 191 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A1W2 131–0566–00 BUS,CONDUCTOR:DUMMY RES,0.094 OD X 0.225L 24546 OMA0207 A1W3 131–0566–00 BUS,CONDUCTOR:DUMMY RES,0.094 OD X 0.225L 24546 OMA0207 671–2356–00...
  • Page 192 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A2R12 321–5045–00 RES,FXD:THICK FILM;68.1 OHM,1%,0.125W,TC=100 PPM 50139 BCD68R1FT A2R13 321–5045–00 RES,FXD:THICK FILM;68.1 OHM,1%,0.125W,TC=100 PPM 50139 BCD68R1FT A2R14 321–5045–00 RES,FXD:THICK FILM;68.1 OHM,1%,0.125W,TC=100 PPM...
  • Page 193 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A3C1 290–5037–01 CAP,FXD,ALUM:10UF,20%,35V,5.7 H X 5 DIA MM 1W344 MVK35VC10RME60T A3C2 283–5098–00 CAP,FXD,CER:MLC;0.1UF,+80%–20%,50V,Z5U,1206 04222 12065E104ZAT3A A3C3 290–5037–01 CAP,FXD,ALUM:10UF,20%,35V,5.7 H X 5 DIA MM...
  • Page 194 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A3C65 283–5098–00 CAP,FXD,CER:MLC;0.1UF,+80%–20%,50V,Z5U,1206 04222 12065E104ZAT3A A3C66 283–5098–00 CAP,FXD,CER:MLC;0.1UF,+80%–20%,50V,Z5U,1206 04222 12065E104ZAT3A A3C67 283–5098–00 CAP,FXD,CER:MLC;0.1UF,+80%–20%,50V,Z5U,1206 04222 12065E104ZAT3A A3C68 283–5109–00 CAP,FXD,CER:MLC;680PF,5%,100V,NPO,1206...
  • Page 195 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A3C123 283–5098–00 CAP,FXD,CER:MLC;0.1UF,+80%–20%,50V,Z5U,1206 04222 12065E104ZAT3A A3C124 283–5098–00 CAP,FXD,CER:MLC;0.1UF,+80%–20%,50V,Z5U,1206 04222 12065E104ZAT3A A3C125 283–0698–01 CAP,FXD,MICA DI:390PF,1%,500V,T&A 09023 CDA15FD391F03 A3C126 283–5108–00 CAP,FXD,CER:MLC;68PF,5%,100V,NPO,1206...
  • Page 196 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description 136–1185–00 SOCKET,LP HLDR:PCB,WEDGE BASE;FEMALE,RTANG, 95263 53–35XP11 SINGLE,0.328H X 0.172 TAIL,TIN,T–1.75 *END MOUNTING PARTS* A3DS3 150–0168–00 LAMP,INCAND:14V,0.08A,WEDGE BASE,T1.75FOR SKT MT...
  • Page 197 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A3Q3 151–5001–00 XSTR,SIG:BIPOLAR,NPN;40V,200MA,300MHZ,AMPL 04713 MMBT3904LT1 A3Q4 151–5000–00 XSTR,SIG:BIPOLAR,PNP;40V,200MA,250MHZ,AMPL 04713 MMBT3906LT1 A3Q5 151–5000–00 XSTR,SIG:BIPOLAR,PNP;40V,200MA,250MHZ,AMPL 04713 MMBT3906LT1 A3Q6 151–5001–00 XSTR,SIG:BIPOLAR,NPN;40V,200MA,300MHZ,AMPL...
  • Page 198 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A3R22 321–5042–00 RES,FXD:THICK FILM;39.2 OHM,1%,0.125W,TC=100 PPM 57668 MCR18FWEA39E2 A3R23 321–5051–00 RES,FXD:THICK FILM;0 OHM,1%,0.125W,TC=100 PPM 09969 CRCW1206 JUMPER A3R24 321–5030–00...
  • Page 199 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A3R80 321–5037–00 RES,FXD:THICK FILM;39.2K OHM,1%,0.125W,TC=100 PPM 50139 BCK3922FT A3R81 321–5037–00 RES,FXD:THICK FILM;39.2K OHM,1%,0.125W,TC=100 PPM 50139 BCK3922FT A3R82 307–5041–00 RES NTWK,FXD,FI:4.7K OHM,2%,0.125W...
  • Page 200 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A3R138 321–5000–00 RES,FXD:THICK FILM;10 OHM,1%,0.125W,TC=100 PPM 91637 CRCW120610R0FT A3R139 321–5013–00 RES,FXD:THICK FILM;392 OHM,1%,0.125W,TC=100 50139 BCK3920FT A3R140 321–5027–00 RES,FXD:THICK FILM;5.62K OHM,1%,0.125W,TC=100 PPM...
  • Page 201 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A3R192 321–5012–00 RES,FXD:THICK FILM;332 OHM,1%,0.125W,TC=100 50139 BCK3320FT A3R193 321–5012–00 RES,FXD:THICK FILM;332 OHM,1%,0.125W,TC=100 50139 BCK3320FT A3R194 321–5012–00 RES,FXD:THICK FILM;332 OHM,1%,0.125W,TC=100...
  • Page 202 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A3R255 321–5006–00 RES,FXD:THICK FILM;100 OHM,1%,0.125W,TC=100 50139 BCK1000FT A3R258 321–5025–00 RES,FXD:THICK FILM;3.92K OHM,1%,0.125W,TC=100 PPM 50139 BCK3921FT A3R259 321–5021–00 RES,FXD:THICK FILM;1.82K OHM,1%,0.125W,TC=100 PPM...
  • Page 203 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A3R331 321–5047–00 RES,FXD:THICK FILM;100K OHM,1%,0.125W,TC=100 PPM 50139 BCK1003FT A3R332 321–5006–00 RES,FXD:THICK FILM;100 OHM,1%,0.125W,TC=100 50139 BCK1000FT A3R333 321–5047–00 RES,FXD:THICK FILM;100K OHM,1%,0.125W,TC=100 PPM...
  • Page 204 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A3U9 156–5358–01 IC,DGTL:HCMOS,RGTR;8–BIT PISO SHIFT RGTR 01295 SN74HC165DR A3U10 156–6461–01 IC,MEM:CMOS,EPROM;256K X 8,150NS FLASH 34335 AM28F020–150C3J A3U11 156–6151–00 IC,MEM:CMOS,SRAM;128K X 8,100NS,15UA,OE...
  • Page 205 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A3U51 156–5289–01 IC,DGTL:HCTCMOS,FLIP FLOP;OCTAL D–TYPE,3–STATE 04713 MC74HCT574ADWR A3U52 156–5289–01 IC,DGTL:HCTCMOS,FLIP FLOP;OCTAL D–TYPE,3–STATE 04713 MC74HCT574ADWR A3U53 156–4234–00 IC,LIN:BIPOLAR,VR;NEGATIVE,–8.0 VOLTS,1.0A,2%...
  • Page 206 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A4C2 283–5004–00 CAP,FXD,CER:MLC;0.1UF,10%,25V,X7R,1206 04222 12063C104KAT3A A4C3 283–5098–00 CAP,FXD,CER:MLC;0.1UF,+80%–20%,50V,Z5U,1206 04222 12065E104ZAT3A A4C4 283–5004–00 CAP,FXD,CER:MLC;0.1UF,10%,25V,X7R,1206 04222 12063C104KAT3A A4C5 283–5098–00 CAP,FXD,CER:MLC;0.1UF,+80%–20%,50V,Z5U,1206...
  • Page 207 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A4R17 321–5006–00 RES,FXD:THICK FILM;100 OHM,1%,0.125W,TC=100 50139 BCK1000FT A4R18 321–5043–00 RES,FXD:THICK FILM;47.5 OHM,1%,0.125W,TC=100 PPM 57668 MCR18FWEA47E5 A4R19 321–5013–00 RES,FXD:THICK FILM;392 OHM,1%,0.125W,TC=100...
  • Page 208 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A5C9 281–0797–00 671–2941–00 671–2941–01 CAP,FXD,CER:MLC;15PF,10%,100V, 04222 SA102A150KAA A5C9 281–0819–00 671–2941–02 CAP,FXD,CER:MLC;33 PF,5%,50V,0.100 X 0.170 04222 SA102A330JAA A5C10 281–0775–01 CAP,FXD,CER:MCL;0.1UF,20%,50V,Z5U,0.170...
  • Page 209 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A5R7 131–4566–00 BUS,CNDCT:0 OHM,300 SPACING,SM BODYMI,DUM RES 91637 FRJ–50 A5R8 131–4566–00 BUS,CNDCT:0 OHM,300 SPACING,SM BODYMI,DUM RES 91637 FRJ–50 A5R9 322–3193–00...
  • Page 210 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description 136–0959–00 SOCKET,PLCC:PCB;52 POS,0.361 H X 0.147 TAI 00779 821551–1 L,TIN,OPT PLZ POST *END MOUNTING PARTS* 671–2699–00 B010100 B010109...
  • Page 211 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A6R12 321–5106–00 RES,FXD,FILM:110 OHM,1%,0.125W,1206,8MM T&R 50139 BCK1100FKM A6R13 321–5106–00 RES,FXD,FILM:110 OHM,1%,0.125W,1206,8MM T&R 50139 BCK1100FKM A6R14 321–5106–00 RES,FXD,FILM:110 OHM,1%,0.125W,1206,8MM T&R...
  • Page 212 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A7C121 283–5098–00 CAP,FXD,CER:MLC;0.1UF,+80%–20%,50V,Z5U,1206 04222 12065E104ZAT3A A7C125 283–5098–00 CAP,FXD,CER:MLC;0.1UF,+80%–20%,50V,Z5U,1206 04222 12065E104ZAT3A A7C126 283–5098–00 CAP,FXD,CER:MLC;0.1UF,+80%–20%,50V,Z5U,1206 04222 12065E104ZAT3A A7C130 283–0633–01 CAP,FXD,MICA DI:77PF,1%,500V,RDL,T&A...
  • Page 213 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A7C414 283–5098–00 CAP,FXD,CER:MLC;0.1UF,+80%–20%,50V,Z5U,1206 04222 12065E104ZAT3A A7C415 283–5098–00 CAP,FXD,CER:MLC;0.1UF,+80%–20%,50V,Z5U,1206 04222 12065E104ZAT3A A7C420 283–5203–00 CAP,FXD,CER:MLC;1000PF,10%,100V,X7R,1206 04222 12061C102KAT1A A7C421 283–5098–00 CAP,FXD,CER:MLC;0.1UF,+80%–20%,50V,Z5U,1206...
  • Page 214 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A7J14 131–3181–00 CONN,HDR:PCB;MALE,RTANG,2 X 20,0.1 CTR,0.3 22526 69155–440R 30 H X 0.112 TAIL,SHRD/4 SIDES,CTR PLZ,30 G OLD,0.390 MLG,HIGH TEMP A7J84 131–3718–00...
  • Page 215 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A7R56 321–5305–00 RES,FXD,FILM:2K OHM,0.1%,25PPM,0.125W,1206 PKG,T&R 91637 TNPW1206–2001BT A7R61 321–5305–00 RES,FXD,FILM:2K OHM,0.1%,25PPM,0.125W,1206 PKG,T&R 91637 TNPW1206–2001BT A7R62 321–5017–00 RES,FXD:THICK FILM;825 OHM,1%,0.125W,TC=100...
  • Page 216 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A7R149 321–5006–00 671–2720–02 RES,FXD:THICK FILM;100 OHM,1%,0.125W,TC=100 50139 BCK1000FT A7R150 321–5038–00 RES,FXD:THICK FILM;47.5K OHM,1%,0.125W,TC=100 PPM 50139 BCK4752FT A7R151 321–5018–00 RES,FXD:THICK FILM;1.0K OHM,1%,0.125W,TC=100 PPM...
  • Page 217 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A7R419 321–5037–00 RES,FXD:THICK FILM;39.2K OHM,1%,0.125W,TC=100 PPM 50139 BCK3922FT A7R420 321–5016–00 RES,FXD:THICK FILM;681 OHM,1%,0.125W,TC=100 50139 BCK6810FT A7R421 321–5009–00 RES,FXD:THICK FILM;182 OHM,1%,0.125W,TC=100...
  • Page 218 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A7R624 321–5281–00 RES,FXD:THICK FILM;2K OHM,1%,0.125W,TC=100 PPM 91637 CRCW1206–2001FT A7R700 321–5000–00 RES,FXD:THICK FILM;10 OHM,1%,0.125W,TC=100 PPM 91637 CRCW120610R0FT A7R711 321–5010–00 RES,FXD:THICK FILM;221 OHM,1%,0.125W,TC=100...
  • Page 219 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A7U204 156–5289–01 IC,DGTL:HCTCMOS,FLIP FLOP;OCTAL D–TYPE,3–STATE 04713 MC74HCT574ADWR A7U206 156–6619–01 IC,MEM:CMOS,FIFO;512 X 9,35NS 34335 AM7201–35JCTR A7U207 160–9401–00 IC,DGTL:CMOS,PLD;EEPLD,22V10,130MA,25NS,PLCC28 80009...
  • Page 220 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A8C54 283–5211–00 CAP,FXD,CER:MLC;4700PF,10%,50V,X7R 04222 12065C472KT2A A8C55 290–5008–00 CAP,FXD,TANT:1UF,20%,35V,0.138 X 0.110;3528,SMD,T&R 04222 TAJB105M035 A8C56 290–5008–00 CAP,FXD,TANT:1UF,20%,35V,0.138 X 0.110;3528,SMD,T&R 04222...
  • Page 221 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A8C241 283–5108–00 CAP,FXD,CER:MLC;68PF,5%,100V,NPO,1206 04222 12061A680JAT1A A8C242 283–5098–00 CAP,FXD,CER:MLC;0.1UF,+80%–20%,50V,Z5U,1206 04222 12065E104ZAT3A A8CR1 152–0720–00 DIO,RECT:ULTRA FAST;200V,8A,25NS,100A IFSM 25403 BYW29–200 A8CR1 214–3841–00...
  • Page 222 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A8R49 321–5000–00 RES,FXD:THICK FILM;10 OHM,1%,0.125W,TC=100 PPM 91637 CRCW120610R0FT A8R50 321–5086–00 RES,FXD:THICK FILM;36.5 OHM,1%,0.125W,TC=100 PPM 50139 BCK36R5FT A8R51 321–5086–00 RES,FXD:THICK FILM;36.5 OHM,1%,0.125W,TC=100 PPM...
  • Page 223 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A8R208 321–5004–00 RES,FXD:THICK FILM;22.1 OHM,1%,0.125W,TC=100 PPM 57668 MCR18FWEA22E1 A8R209 321–5004–00 RES,FXD:THICK FILM;22.1 OHM,1%,0.125W,TC=100 PPM 57668 MCR18FWEA22E1 A8R210 321–5051–00 RES,FXD:THICK FILM;0 OHM,1%,0.125W,TC=100 PPM...
  • Page 224 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description A8TP6 214–4085–00 TERM,TEST POINT:0.070 ID,0.220 H,0.063 DIA 26364 104–01–02 PCB,0.015 X 0.032 BRASS,W/ RED NYLON COLLAR A8TP7 214–4085–00 TERM,TEST POINT:0.070 ID,0.220 H,0.063 DIA...
  • Page 225 Replaceable Electrical Parts Component Tektronix Serial / Assembly Number Mfr. Mfr. Part Number Part Number Effective Discontinued Code Number Name & Description 174–3125–00 CA ASSY,SP,BR:RIBBON,DESERIALIZER PWR;IDC,20,28 TK2469 174–3125–00 AWG,2 X 10,4.0 IN TO 2 X 5,18.0 IH TO2 X 5 (CONNECTED @ A4J2,A5J1 &...
  • Page 227 Example: ID CONTROL, (ID CONTROL), or /ID CONTROL. Abbreviations are based on ANSI Y1.1–1972. Other ANSI standards that are used in the preparation of diagrams by Tektronix, Inc. are: Y14.15, 1966 -- Drafting Practices. Y14.2, 1973 -- Line Conventions and Lettering.
  • Page 228 When more than one schematic diagram is used to illustrate the circuitry on a circuit board, the circuit board illustration will only appear opposite the first diagram; the lookup table will list the diagram number of other diagrams that the other circuitry appears on. WFM601 Serial Digital Component Monitor 9–2...
  • Page 229 CAL TIMING FILTER from SELECTION from LINE RATE CONTROL- LINE RATE CONTROLLER RECON- STRUC- TION DELAY FILTER FILTER SQUARE LEVEL Y SYNC CH 1 from WAVE 13.5 MHZ R from SWITCH DACS 27 MHz CALIB COMPONENT (2) V POS RECON- from VERT READOUT STRUC-...
  • Page 230 CLAMP PLS BLANK from from COPROCESSOR COPROCESSOR CLAMPED AMPLIFIERS Y/BLANK – from /BLANK COLOR DIFFERENCE COMPONENT BYPASS RECONSTRUCTION TO GBR /BLANKING FILTERS SWITCHING TRANSCODER SWITCHING /BLANK BYPASS CLAMP PLS R G B BLANKING from LEVEL COPROCESSOR CHANNEL GAMUT SWITCHES LIMIT COMPARATOR DIGITAL SERIAL BUS...
  • Page 231 BD8-15 COMPONENT SYNCHRONOUS FIRST IN F DATA SWITCHING FIRST OUT SYN- MEMORY CHRONOUS VERTICAL, HORIZONTAL, READOUT, Z-AXIS, & (FIFO) OUTPUTS DACS (1)(2) DATA BUFFERED DATA (BD) DATA BUFFER VERTICAL NON-VOLATILE READ RANDOM READ- READOUT RANDOM ACCESS ONLY FLASH ACCESS LINE RATE SYNC MEMORY MEMORY...
  • Page 232 Static Sensitive Devices See Maintenance Section Schematic Diagram <1> Component Locator Chart Assembly A4 and A4A1. A4A1 WFM601...
  • Page 233 WFM 601 SERIAL COMPONENT MONITOR BNC & INPUT BOARDS <1>...
  • Page 234 A5 Deserializer Board Static Sensitive Devices See Maintenance Section Schematic Diagram <2> Component Locator Chart The schematic diagram has an alphanumeric grid to assist in locating parts within that diagram. Assembly A5. R47* R48* R11* WFM601...
  • Page 235 DESERIALIZER LINE DRIVER SIGNAL PRESENT DETECTOR COAX CABLE DRIVER WFM 601 SERIAL COMPONENT MONITOR DESERIALIZER <2>...
  • Page 236 Static Sensitive Devices See Maintenance Section Schematic Diagram <3> Component Locator Chart Assembly A6. WFM601...
  • Page 237 ECL TO TTL CONVERTER LINE BUFFER RAM WFM 601 SERIAL COMPONENT MONITOR COPROCESSOR <3>...
  • Page 238 C181 C231 R213 C182 C232 R134 R214 R244 C233 R135 R215 R245 C183 C234 R136 R246 C190 C235 R137 R216 R247 C191 R138 R219 R249 C192 C236 L106 R220 C193 C237 L107 R139 R221 R250 C238 L108 R146 R222 WFM601...
  • Page 239 PHASE LOCKED LOOP ECL TO TTL & CLOCK REGENERATOR CONVERSION ERROR AMP PHASE DETECTOR FREQUENCY DOUBLER SIDEBAND FILTER –5.2V SUPPLY POST REGULATORS WFM 601 SERIAL COMPONENT MONITOR CLOCKS, POWER, & INTERCONNECTS <4>...
  • Page 240 C221 C224 C238 C239 TP214 L106 R152 R153 R216 R220 R221 R222 R223 R224 R225 R226 R227 R228 R229 R233 R234 R235 R236 R237 R238 R239 R240 R241 R242 R243 R244 R245 R246 R247 R249 R254 R262 R263 R271 WFM601...
  • Page 241 Y DELAY Y DAC DIGITAL HALF BAND FILTER WFM 601 SERIAL COMPONENT MONITOR Y DELAY, HALF BAND FILTER, & DAC <5>...
  • Page 242 Assembly A8. Partial Assembly A8 also shown on Diagrams 4 and 5. C223 R146 R147 R148 R149 R150 R151 R200 R201 R202 R203 R204 R205 R206 R207 R208 R209 R210 R211 R212 R213 R214 R215 R230 R231 R252 R253 R255 R256 R257 R258 R259 R260 WFM601...
  • Page 243 DIGITAL HALF BAND FILTERS Pr DAC Pb DAC WFM 601 SERIAL COMPONENT MONITOR Pb & Pr HALF BAND FILTERS & DACS <6>...
  • Page 244 U500 C131 C400 C611 R163 R410 R516 U125B U501 C401 R164 R411 R520 U71A U125C U502 C132 C402 C711 R165 R412 R521 U71B U125D C133 C403 C712 R166 R414 R522 U72A U126A C134 C713 R180 R416 R523 U72B U126B WFM601...
  • Page 245 Y FILTER Pb FILTER Pr FILTER WFM 601 SERIAL COMPONENT MONITOR Y, Pb, & Pr RECONSTRUCTION FILTERS <7>...
  • Page 246 C610 C611 C711 C712 C713 U71A C714 R100 U71B R101 U72A C721 R102 C722 R105 U72B C723 R106 U73A C724 U73B C731 R418 U74A R419 U74B C732 R427 C733 R428 C734 R429 R430 R431 R432 Q441 R441 U100 R442 WFM601...
  • Page 247 WFM 601 SERIAL COMPONENT MONITOR TRANSCODERS & PIX MONITOR OUTPUTS <8>...
  • Page 248 CR470 U125B R155 U125C R156 U125D R157 Q131 R162 U126A Q134 R163 U126B Q136 U127 Q151 R164 U151A Q157 R165 U151B Q180 R166 R180 U151C R181 U151D U161A R470 U161B R496 U161C R497 R700 U161D U162A U162B U74C U74D WFM601...
  • Page 249 WFM 601 SERIAL COMPONENT MONITOR LIGHTNING, VECTOR, & BOWTIE SWITCHING <9>...
  • Page 250 C206 C207 C208 C209 C210 CR180 CR190 R213 R214 R215 R216 R217 R218 R219 R220 R221 R222 R223 R515 U180 U190 U202 U203 U204 U206 U207 U208 U209 U210 U211A U211B U211C U211D U212 U213A U213B U213C U213D U220 WFM601...
  • Page 251 WFM 601 SERIAL COMPONENT MONITOR CONTROL & DACULATOR <10>...
  • Page 252 C141 R232 R268 R286 R316 U76C C124 R247 R269 R287 R317 C125 C142 R248 R293 R318 U76D C126 C143 R249 R275 R368 C144 R276 R294 C129 C130 C145 R251 R277 R298 R369 U70A C131 C146 R254 R278 R370 U70D WFM601...
  • Page 253 PIX OUT INPUT MUX HORIZ REF MUX LUMINANCE FILTER DIFF STEP FILTER CHROMA FILTER WFM 601 SERIAL COMPONENT MONITOR VERTICAL INPUT <11>...
  • Page 254 R148 R229 R328 C158 R149 R230 R329 U48D C162 R150 R231 R330 U49A C163 R151 R232 R331 U49B C164 R152 R234 U49C R332 U49D C170 R153 R235 R333 C171 R154 R237 R336 U50A C172 R155 R241 R337 U50B C173 WFM601...
  • Page 255 VERTICAL DEFLECTION SQUARE WAVE CALIBRATOR VERTICAL AMPLIFIER FILTER MUX WFM 601 SERIAL COMPONENT MONITOR VERTICAL OUTPUT <12>...
  • Page 256 C105 U62B C176 R139 R221 U63A C178 R140 R230 U63B C181 R148 R231 U63C R151 R237 R152 R321 U63D U70B R153 R323 U70C R154 R324 U84B R155 R326 U88A R156 R339 U94A R165 R340 U94C R166 R341 R167 R342 WFM601...
  • Page 257 HORIZONTAL DEFLECTION SWEEP GENERATORS HORIZONTAL SIGNAL MUX HORIZONTAL AMPLIFIER WFM 601 SERIAL COMPONENT MONITOR...
  • Page 258 The schematic diagram has an alphanumeric grid to assist in locating parts within that diagram. Assembly A3. Partial Assembly A3 also shown on Diagrams 11, 12, 13, 15, 16, 17, 18, and 19. U22A U22B U22C U22D U28A U28B U28C U28D U28E U28F U29A U29B WFM601...
  • Page 259 MICROPROCESSOR NOVRAM FLASH EPROM BUFFERS ABORT RESET WFM 601 SERIAL COMPONENT MONITOR...
  • Page 260 Assembly A3. Partial Assembly A3 also shown on Diagrams 11, 12, 13, 14, 16, 17, 18, and 19. R109 R234 R235 R241 R243 C106 R262 C108 C110 R358 C113 R361 C115 R378 C116 R379 U26A U26B U26C U26D WFM601...
  • Page 261 SYNCHRONOUS OUTPUTS LINE RATE CONTROLLER SYNC SEPARATOR WFM 601 SERIAL COMPONENT MONITOR DYNAMIC CONTROL <15>...
  • Page 262 Assembly A3. Partial Assembly A3 also shown on Diagrams 11, 12, 13, 14, 15, 17, 18, and 19. C182 R103 R104 R105 R106 R114 R115 R116 R117 R120 R121 R134 R135 R376 R377 U48A U48B U48C U48D U54A U54B U54C U54D WFM601...
  • Page 263 READOUT CONTROL READOUT STROKE GENERATOR WFM 601 SERIAL COMPONENT MONITOR READOUT <16>...
  • Page 264 R107 U39C U39D C162 R108 U41A R123 U41B C163 R319 C180 R320 U41C R336 U45A U45B R337 U46A R338 U46B R362 R363 U46C U50A U50B U50C TP10 U25A U25B U87A U25C U87B U25D U87C U29D U94B U30A U30B U30C WFM601...
  • Page 266 The schematic diagram has an alphanumeric grid to assist in locating parts within that diagram. Assembly A3. Partial Assembly A3 also shown on Diagrams 11, 12, 13, 14, 15, 16, 17, and 19. C170 C171 C172 C173 C174 C175 R310 R322 R325 R348 R352 R356 U87D WFM601...
  • Page 267 RS232 SERIAL PORT DIGITAL BUS CONNECTORS REMOTE REMOTE PORT WFM 601 SERIAL COMPONENT MONITOR REMOTE & DIGITAL BUS CONNECTORS <18>...
  • Page 268 Assembly A3. Partial Assembly A3 also shown on Diagrams 11, 12, 13, 14, 15, 16, 17, and 18. R125 R126 R145 R146 R147 R284 R289 R290 SKT1 SKT2 SKT3 C107 SKT4 C136 C139 U29C U49A U49B U49C U49D R118 R119 WFM601...
  • Page 269 +8V SUPPLY –8V SUPPLY GRATICULE LIGHTS VPP1 SUPPLY BEZEL CONTROLS BLANKING LOGIC HORIZ POS VERT POS CRT LEFT TRACE ROTATION CRT MIDDLE CRT RIGHT WFM 601 SERIAL COMPONENT MONITOR Z–AXIS & CONTROL <19>...
  • Page 270 The schematic diagram has an alphanumeric grid to assist in locating parts within that diagram. Assembly A2. DS21 DS22 DS23 DS24 DS25 DS26 DS27 DS28 DS29 DS30 DS31 DS32 DS10 DS33 DS34 DS11 DS35 DS12 DS13 DS36 DS14 DS37 DS15 DS38 DS16 DS17 U10A DS18 U10B DS19 DS20 WFM601...
  • Page 271 WFM 601 SERIAL COMPONENT MONITOR FRONT PANEL <20>...
  • Page 272 C101 CR30 R105 C102 CR31 R106 C103 CR32 R107 C104 R108 CR33 CR34 R109 CR35 R110 R111 R112 R113 R114 R115 R116 R117 CR10 R118 CR11 R119 CR12 FIL1 R120 CR13 FIL2 R121 CR14 R122 CR15 R123 CR16 R124 WFM601...
  • Page 273 OUTPUT FILTERS SNUBBER SHUTDOWN LOGIC BASE DRIVE OVERVOLTAGE CONTROLLER PROTECTION SWITCHER VOLTAGE REFERENCE ERROR AMPLIFIER TRANSFORMER DRIVER WFM 601 SERIAL COMPONENT MONITOR REV JAN 1994...
  • Page 274 Schematic Diagram <22> Component Locator Chart The schematic diagram has an alphanumeric grid to assist in locating parts within that diagram. Assembly A1. Partial Assembly A1 also shown on Diagram 21. FIL1 FIL2 CR10 CR11 R126 CR12 CR13 CR14 CR15 WFM601...
  • Page 275 HV OSC & ERROR AMP PIN NUMBERS ON TUBE SOCKET Z AXIS V1 TUBE SOCKET AMPLIFIER VISUAL AID FOCUS AMPLIFIER WFM 601 SERIAL COMPONENT MONITOR HIGH VOLTS POWER SUPPLY <22>...

  • Page 276: Using The Replaceable Mechanical Parts List

    WFM 601. Use this list to identify and order replacement parts. There is a separate Replaceable Mechanical Parts list for each instrument. Parts Ordering Information Replacement parts are available from or through your local Tektronix, Inc., Field Office or representative. Changes to Tektronix instruments are sometimes made to accommodate improved components as they become available and to give you the benefit of the latest circuit improvements.
  • Page 277 Figure & Index No. Items in this section are referenced by figure and index numbers to the illustra- (Column 1) tions. Tektronix Part No. Indicates part number to be used when ordering replacement part from (Column 2) Tektronix. Serial No.
  • Page 278 SUB TRACOR INC 78189 ILLINOIS TOOL WORKS INC ST CHARLES ROAD ELGIN IL 60120 SHAKEPROOF DIV 80009 TEKTRONIX INC 14150 SW KARL BRAUN DR BEAVERTON OR 97077–0001 PO BOX 500 80126 PACIFIC ELECTRICORD CO 747 W REDONDO BEACH GARDENA CA 90247–4203...
  • Page 279 Serial Number Mfr. Index Part No. Effective Dscont 12345 Name & Description Code Mfr. Part No. 1–1 333–4104–00 PANEL,FRONT:WFM601 80009 333–4104–00 –2 ––––– ––––– CIRCUIT BD ASSY:FRONT PANEL (SEE A2 REPL) *MOUNTING PARTS* –3 210–0407–00 NUT,PLAIN,HEX:6–32 X 0.25,BRS CD PL 73743 3038–402...
  • Page 280 SCREW,MACHINE:4–40 X 0.5,PNH,STL 93907 ORDER BY DESCR *END MOUNTING PARTS* –64 131–4131–00 CONN,PLUG,ELEC:MALE W/LOCKING ADPTR,EXT MTG 80009 131–4131–00 –65 200–4150–00 COVER,FAN:2.5 X 2.5 X 1.39 THK,WFM601 SAFETY CON- 80009 200–4150–00 TROLLED *MOUNTING PARTS* 10–5 WFM 601 Serial Digital Component Monitor...
  • Page 281 029–500 –74 426–2497–00 FRAME,CHASSIS:ALUMINUM 80009 426–2497–00 STANDARD ACCESSORIES 011–0163–00 TERM,COAXIAL:BNC,TERMINATION SINGLR ENDED;75 80009 011–0163–00 OHM,26DB TO 300MHZ,50 OHM INTERMATABLE 070–8471–00 MANUAL,TECH:OPER,WFM601 80009 070–8471–00 150–0168–00 LAMP,INCAND:14V,0.08A,WEDGE BASE,T1.75 FOR SOCKET 80009 150–0168–00 MOUNT 159–0021–00 FUSE,CARTRIDGE:3AG,2A,250V,FAST BLOW 75915 312 002 378–0335–00 FILTER,AIR:1.6 X 1.6,30PPI,0.188 THK 80009 378–0335–00...
  • Page 282 A4A1 Î Î Î Î Î Î Î Î Î Î Î Î WFM 601...
  • Page 283 Broad Pulses Another name for the vertical synchronizing pulses in the center of the vertical interval. These pulses are long enough to be distinguished from all others, and are the part of the signal actually detected by vertical sync separators. Glossary–1 WFM601 Serial Component Monitor...
  • Page 284 R–Y and B–Y to the luminance signal for NTSC systems or U and V to the luminance signal for PAL systems. CW Continuous Wave. Refers to a separate subcarrier sine wave used for synchronization of chrominance information. Glossary–2 WFM601 Serial Component Monitor...
  • Page 285 In television it may refer to: (1) An instrument, such as a TEKTRONIX 1450, which takes video in its transmitted form (modulated onto the picture carrier) and converts it to baseband.
  • Page 286 1 volt. The 0 IRE point is at blanking level, with sync tip at –40 IRE and white extending to +100 IRE. IRE stands for Institute of Radio Engineers, the organization which defined the unit. Glossary–4 WFM601 Serial Component Monitor...
  • Page 287 Quadrature distortion appears when envelope detection is used, but can be eliminated by using a synchronous demodulator. RF Radio Frequency. In television applications, RF generally refers to the television signal after the picture carrier modulation process Glossary–5 WFM601 Serial Component Monitor...
  • Page 288 U The B–Y signal after a weighting factor of 0.493 has been applied. The weighting is necessary to reduce peak modulation in the composite signal. Glossary–6 WFM601 Serial Component Monitor...
  • Page 289 Waveform Monitor A specialized oscilloscope that plots voltage versus time to evaluate television signals. Y Abbreviation for luminance. Zero Carrier Reference A pulse in the vertical interval which is produced by the demodulator to provide a reference for evaluating depth of modulation. Glossary–7 WFM601 Serial Component Monitor...
  • Page 290 Glossary Glossary–8 WFM601 Serial Component Monitor...
  • Page 291 Index Numbers Block Diagram 1 Input and Waveform Monitor, 3–2 Block Diagram 2, Component 1700F00, 7–2 Color Difference to GBR Transcoder, 3–4 1700F00 Cabinet, 2–2 Component Blanking Switching, 3–4 1700F02, 7–3 Gamut Limit Comparator & Clamped Amplifiers, 1700F02 Portable Carrying Case, 2–2 3–4 1700F04 side-by-side rack mount assembly, 2–2 GBR to Diamond Transcoder &...
  • Page 292 Index Characteristics Tables, 1–3 High Voltage Power Supply (Diagram 22), 3–28 Analog Audio Mode, 1–8 Focus Amplifier, 3–28 Bowtie Mode, 1–9 Grid Drive Circuit, 3–29 Calibrator, 1–7 HV OSC and Error Amp, 3–28 Categories, 1–3 Power Supply Outputs, 3–28 Certification, 1–11 Z-Axis Amplifier, 3–29 Component Vector Mode, 1–8 Horizontal (Diagram 13), 3–19...
  • Page 293 Monitor Output, 3–14 Power Supply, 6–6 Parade Output, 3–13 RGB Transcoder, 3–13 Vertical Input (Diagram 11), 3–17 Tektronix Service Offerings, 6–13 Horiz Ref MUX, 3–17 Factory Replacement Parts, 6–16 Input Mux, 3–17 Field Service Centers, 6–14 Luminance/Diff Step Filters, 3–17 Module Exchange, 6–14...

  • Page 294: Major Features

    Getting Started, 2–19 Graticule Light Replacement, 6–20 Specific Troubleshooting Techniques, 6–6 Inputs, 2–24 Installation, 2–1 Cabinetizing, 2–4 Custom, 2–6 Tektronix Service Offerings, 6–13 Electrical, 2–7 Floppy Disks, 2–1 Mains Frequency and Voltage Range, 2–8 Mechanical, 2–2 Operational Changes, 2–8 Preventive Maintenance, 6–1 Power Cord Options, 2–8...
  • Page 295 RS232 Connector, 2–12 Performance Verification, 4–1 Serial interface, 2–12 Calibration Data Report, 4–4 Service Options, 6–1 Form, 4–5 Tektronix Service, 6–1 Recommended Equipment List, 4–1 Side-by-Side Rack Adaptor, 1700F05, 7–4 Auxiliary Equipment, 4–3 Software, Floppy Disk, 2–1 Electrical Instruments, 4–1 Software Level, How to Determine, 2–1...
  • Page 296 Upgrading Software, 2–12 Equipment Required to Perform Software Upgrades, 2–13 Instrument Reset, 2–13 Utility Drawer, 1700F07, 7–5 Tektronix Service, 6–1 Tektronix Service Offerings, 6–13 Factory Replacement Parts, 6–16 Field Service Centers, 6–14 Module Exchange, 6–14 Vector Display, 2–23 Service Training, 6–14 Voltage Range, 2–8...
  • Page 297 Manual Change Information Tektronix products are constantly under development for increased performance or lower cost to the customer. Often, changes are incorporated into a product as soon as they are shown to meet the highest quality standards. This aggressive policy of product improvement can result in changes that are not reflected in the appropriate sections of the manual.
  • Page 298 MANUAL CHANGE INFORMATION 4/28/94 M81012 Date: Change Reference: Product: See List Manual Part Number: See List Product Effective S/N Manual P/N 1740A Series B014459 070–8469–00 1750A Series B014450 070–8469–00 1760 Series B014581 070–8469–00 WFM 601 B010951 070–8876–00 ELECTRICAL PARTS LIST AND SCHEMATIC CHANGES 1740/1750A/1760–Series ONLY CHANGE TO READ: DIAG.
  • Page 299 B010663 Eff F/W Ver 1.4 Replaceable Electrical Parts and Schematic Changes Section 7 Replaceable Electrical Parts Change to Read: 671–2958–06 CKT BD ASSY:MAIN BOARD (WFM601 ONLY) 671–3155–02 CKT BD ASSY:MAIN BOARD (WFM601i ONLY) A3U13 160–9720–01 IC,MEMORY:CMOS,EPROM;128K X 8;PRGM 27C010 A3U62 156–5854–01...
  • Page 300 Date: Change Reference: 9/23/94 M81435 Part of A3 Main board Schematic 12, Vertical Output, showing added part. Part of A3 Main board Schematic 17, DACs & Serial, showing added part. Page 2 of 2...
  • Page 301 MANUAL CHANGE INFORMATION Date: Change Reference: 3/25/95 M81119 Product: Manual P/N: Effective S/N: WFM601 070–8876–00 B011727 Replaceable Parts List, Schematic, and Illustration Changes Section 8 Replaceable Electrical Parts Change to Read: 671–2676–04 CKT BD ASSY:DAC BOARD A8C171 290–1312–00 CAP,FXD,ALUM:2.2UF,20%,315V;RADIAL,105 DEG A8R85 321–5042–00...
  • Page 302 Date: Change Reference: 3/25/95 M81119 DIGITAL HALF BAND FILTERS Pr DAC Pb DAC Part of Schematic 6, A8 DAC board, showing circuit changes. Page 2 of 4...
  • Page 303 PHASE LOCKED LOOP ECL TO TTL & CLOCK REGENERATOR CONVERSION ERROR AMP PHASE DETECTOR FREQUENCY DOUBLER SIDEBAND FILTER –5.2V SUPPLY POST REGULATORS WFM 601 SERIAL COMPONENT MONITOR M81119 Page 3 of 4 CLOCKS, POWER, & INTERCONNECTS <4>...
  • Page 304 A8 DAC Board 671–2676–04 M81119 Page 4 of 4...

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