Tektronix 1502C Service Manual
  1. Manuals
  2. Brands
  3. Tektronix Manuals
  4. Measuring Instruments
  5. 1502C
  6. Service manual

Tektronix 1502C Service Manual

Metallic time-domain reflectometer
Hide thumbs Also See for 1502C:
Table of Contents

Advertisement

Quick Links

Download this manual
sales@artisantg.com
artisantg.com
(217) 352-9330 |
|
Click HERE
Find the Tektronix 670-9286-04 at our website:

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 1502C and is the answer not in the manual?

Questions and answers

Related Manuals for Tektronix 1502C

Summary of Contents for Tektronix 1502C

  • Page 1 (217) 352-9330 | Click HERE Find the Tektronix 670-9286-04 at our website:...
  • Page 2 Service Manual 1502C Metallic Time-Domain Reflectometer 071-0678-00 ST642-AB-MMC-020 0910-LP-017-6840 This document applies for firmware version 5.02 and above. Warning The servicing instructions are for use by qualified personnel only. To avoid personal injury, do not perform any servicing unless you are qualified to do so.
  • Page 3 Changes or modification not expressly approved by T ektronix can affect emission compliance, and could void the user's authority to operate this equipment. The 1502C Metallic Time Domain Reflectometer was designed and manufactured by: T ektronix, Inc. 100 S.E. Wilson Ave.
  • Page 4 AN/NZS 2064. 1/2 Industrial, Scientific, and Medical Equipment: 1992 Certificate of the Manufacturer/Importer We hereby certify that the Tektronix 1502C Metallic TDR complies with the RF Interference Suppression requirements of Amtsbl. Vfg 1046/1984. The German Postal Service was notified that the equipment is being marketed.
  • Page 5 (1) year from the date of shipment. If any such product proves defective during this warranty period, Tektronix, at its option, either will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the defective product.

  • Page 6: Table Of Contents

    1–1 Preparing to Use the 1502C .........
  • Page 7 ......10–1 Glossary Index 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 8: List Of Figures

    ......1–28 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 9 ......5–35 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 10 Rising Edge at Center of Display ....6–22 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 11 7–8 Figure 7–6: Display Module/Front Panel Board Screw Locations . . . 7–10 Figure 7–7: Display Module/Front Panel Board Showing Hex Nuts 7–10 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 12 ....... . . 10–13 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 13: List Of Tables

    ..........7–18 viii 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 14: General Safety Summary

    This product is intended to operate from a power source that will not apply more than 250 volts RMS between the supply conductors or between the supply conductor and 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 15 To avoid personal injury, do not remove the product covers or panels. Do not operate Panels the product without the covers and panels properly installed. 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 16: Service Safety Summary

    Hazardous Waste guidelines. Check your local and state regulations prior to disposing of an old battery. Tektronix Factory Service will accept 1502C batteries for recycling. If you choose to return the battery to us for recycling, the battery cases must be intact, the battery should be packed with the battery terminals insulated against possible short-circuits, and should be packed in shock-absorbant material.
  • Page 17 Service Safety Summary 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 18: General Information

    The 1502C generates a half-sine wave signal, applies it to the cable under test, and detects and processes the reflected voltage waveform. These reflections are displayed in the 1502C liquid crystal display (LCD), where distance measurements may be made using a cursor technique.

  • Page 19: Installation And Repacking

    Checks appendix. These checks should satisfy the requirements for most receiving or incoming inspections. Power Source and Power The 1502C is intended to be operated from a power source that will not apply more Requirements than 250 volts RMS between the supply conductors or between either supply conductor and ground.
  • Page 20 If it is necessary to ship the battery, it should be wrapped and secured separately before being packed with the instrument. 2. Install the front cover on the 1502C and surround the instrument with polyethylene sheeting to protect the finish.
  • Page 21 General Information 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 22: Operating Instructions

    This procedure is explained in the 1502C Service Manual. The 1502C can be stored in temperatures ranging from –62° C to +85° C. However, if the temperature is below –40° C or above +55° C, the battery pack should be removed and stored separately.
  • Page 23 Operating Instructions The 1502C is intended to be operated from a power source that will not apply more than 250 V RMS between the supply conductors or between either supply conductor and ground. A protective ground connection by way of the grounding conductor in the power cord is essential for safe operation.
  • Page 24 90 days. A fully charged battery pack will lose about 12% of its capacity in three to four months if stored between +20° C and +25° C. NOTE. The battery pack in the 1502C is inside the instrument case with no external access. Refer removal and replacement to qualified service personnel.

  • Page 25: Figure 1-2: Display Showing Low Battery Indication

    AC only. Low Temperature When operating the 1502C in an environment below +10° C, a heater will activate. Operation The element is built into the LCD module and will heat the display to permit normal operation.

  • Page 26: Preparing To Use The 1502C

    Operating Instructions Preparing to Use the 1502C Check the power requirements, remove the front cover, and you are ready to test cables. The following pages explain the front-panel controls. Tektronix METALLIC TDR 1502B CABLE TESTER POSITION 0.00 ft MENU VIEW...

  • Page 27: Display

    Vertical Scale Distance per Division Figure 1–4: Display and Indicators Front-Panel Controls 1. CABLE: A female BNC connector for attaching a cable to the 1502C for testing. 2. NOISE FILTER: If the displayed waveform is noisy, the apparent noise can NOISE FILTER be reduced by using noise averaging.

  • Page 28: Menu Selections

    The Main Menu is entered by pushing the MENU button on the front panel. 1. Return to Normal Operations puts the instrument into normal operation mode. 1–7 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 29 Hold can be deactivated by pushing STORE or the mode exited by using the Setup Menu. ii. Pulse Is: On/Off. Turns the pulse generator off so the 1502C does not send out pulses. iii. Single Sweep Is: On/Off. This function is much like a still camera; it will acquire one waveform and hold it.
  • Page 30 NOTE. The Diagnostics Menu is intended for instrument repair and calibration. Proper instrument setup is important for correct diagnostics results. Refer to the 1502C Service Manual for more information on diagnostics. a. Service Diagnostics Menu has these choices: Sampling Efficiency Diagnostic displays a continuous efficiency diagnostic of the sampling circuits.
  • Page 31 With user-developed software drivers, the ability to obtain detailed error messages during the development can be very useful. For more information, contact your Tektronix Customer Service representatives. They have information describing the option port hardware and software protocol and custom development methods available.

  • Page 32: Test Preparations

    It is sometimes expressed as a whole number (e.g., 66) or a percentage (e.g., 66%). On the 1502C, it is the percentage expressed as a decimal number (e.g., 66% = .66). If you do not know the velocity of propagation, you can get a general idea from the following table, or use the Help with Cables section of the Cable Information menu.

  • Page 33: Figure 1-5: Vp Set At .30, Cursor Beyond Reflected Pulse

    Figure 1–6: Vp Set at .99, Cursor Less Than Reflected Pulse (Set Too High) 3.000 ft Figure 1–7: Vp Set at .66, Cursor at Reflected Pulse (Set Correctly) 1–12 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 34: Cable Test Procedure

    Operating Instructions Cable Test Procedure Distance to the Fault Be sure to read the previous paragraphs on Vp. 1. Set the 1502C controls: POWER CABLE Cable to BNC NOISE FILTER 1 avg VERT SCALE 500 m DIST/DIV (see below) (per cable) 2.

  • Page 35: Figure 1-10: Open In The Cable

    POSITION control so the cursor travels to the far right side of the LCD. Keep turning and the cable will be “dragged” across the display. 1–14 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 36: Figure 1-12: 455-Ft Cable

    It is designated by the Greek letter and is written in this manual as rho. The 1502C measures the reflection coefficient in millirho (thousandths of a rho). To measure a reflection, adjust VERT SCALE to make the reflection one division high.
  • Page 37 It will show as a downward shift or dip on the waveform. If the cable has an open or short, all the energy sent out by the 1502C will be reflected. This is a reflection coefficient of rho = 1, or +1000 m for the open and –1000 m...

  • Page 38: Figure 1-14: Return Loss

    Ohms-at-Cursor The 1502C can compute and display what impedance mismatch would cause a reflection as high (or low) as the point at the cursor. This measurement is useful for evaluating the first impedance mismatch (first reflection) or small impedance changes along the cable (e.g., connectors, splices).

  • Page 39: Figure 1-16: Display With View Input Turned Off

    The front panel control settings and the menu-accessed settings are also stored. They are accessed under View Stored Waveform Settings in the first level of the menu. 1–18 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 40: Figure 1-17: Display Of A Stored Waveform

    POSITION control. Any of the waveforms may be turned on or off independently. You might want to turn off some waveforms if the display becomes too busy or confusing. 1–19 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 41: Figure 1-19: Waveform Moved To Top Half Of Display

    Figure 1–20: Current Waveform Centered, Stored Waveform Above 5. Push VIEW DIFF and the difference waveform will appear below the current waveform. 1–20 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 42: Figure 1-21: Current Waveform Center, Stored Waveform Above

    If either the stored or current waveform is clipped at the top or bottom of the display, the difference waveform will be affected. 1–21 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 43: Figure 1-22: Waveform Of Three-Foot Lead-In Cable

    REF, or delta mode. The distance window should now read 0.00 ft. As the cursor is scrolled down the cable, the distance reading will now be from the new zero reference point. 1–22 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 44: Figure 1-24: Cursor Moved To End Of Three-Foot Lead-In Cable

    1. Turn NOISE FILTER fully counterclockwise. “Set Ref” will appear in the noise averaging area of the LCD. 1–23 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 45: Figure 1-26: Incident Pulse At Three Divisions

    Cable 2. Adjust the POSITION control to position the reflected pulse at center screen. 3. Turn NOISE FILTER to VERT SET REF. 1–24 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 46: Figure 1-28: Waveform Centered And Adjusted Vertically

    Adjust VERT SCALE to obtain an incident pulse height of two divisions. c. Push STORE. d. Turn NOISE FILTER to desire filter setting. 1–25 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 47: Additional Features (Menu Selected)

    Additional Features (Menu Selected) Max Hold The 1502C will capture and store waveforms on an ongoing basis. This is useful when the cable or wire is subjected to intermittent or periodic conditions. The 1502C will monitor the line and display any fluctuations on the LCD.

  • Page 48: Figure 1-32: Waveform Display With No Outgoing Pulses

    The input circuitry is very sensitive and can be easily damaged by even moderate level signals. NOTE. In this mode, the 1502C is acting as a detector only. Any pulses detected will not originate from the instrument, so any distance readings will be invalid. If you are listening to a local area network, for example, it is possible to detect traffic, but not possible to measure the distance to its origin.

  • Page 49: Figure 1-33: A Captured Single Sweep

    Single Sweep The single sweep function will acquire one waveform only and display it. 1. Attach a cable to the 1502C front-panel CABLE connector. 2. Push MENU to access the Main Menu. 3. Scroll to Setup Menu and push MENU again.

  • Page 50: Operator Performance Checks

    Operator Performance Checks This chapter contains performance checks for many of the functions of the 1502C. They are recommended for incoming inspections to verify that the instrument is functioning properly. Procedures to verify the actual performance requirements are provided in chapter 6.
  • Page 51 If the instrument fails this check, it must be repaired before any distance (Timebase) Check measurements can be made with it. 1. Turn the 1502C power on. The display should look very similar to Figure B–1. 0.000 ft Figure 2–1: Start-up Measurement Display 2.
  • Page 52 8. Set the DIST/DIV control to .1 ft/div (0.025 m/div). 9. Turn the POSITION control counterclockwise until the distance window shows a distance of –2.000 feet (–0.611 m). 2–3 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 53 POSITION control, verify that the entire waveform can be moved to the very bottom of the display (to the bottom graticule line). 2–4 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 54 7. Press MENU again. 8. Using the POSITION control, select Noise Diagnostics. 9. Press MENU again and follow the instructions on the display. 2–5 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 55 NOTE. Occasionally, the instrument might not pass the 48 dB step. This is no cause for alarm. If the remainder of the steps do not fail, proceed as normal. Refer to the 1502C Service Manual for additional information. There are three screens of data presented in this diagnostic. The Pass/Fail level is 3% for any single gain setting tested.
  • Page 56 To verify distances past the right edge of the display, scroll along the waveform by turning the POSITION control clockwise. 2–7 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 57 Figure 2–11: Waveform Centered, Cursor at 0.000 ft 7. Risetime Check If the risetime is out of specification, it might be difficult to make accurate short-distance measurements near the front panel. 1. Set the 1502C front-panel controls: NOISE FILTER 1 avg VERT SCALE...
  • Page 58 2. Watch the leading edge of the pulse move and verify that this movement is less than five pixels, or < 0.02 ft (0.006 m). 2–9 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 59 If you suspect a problem of this nature, you should have the instrument checked by a qualified service technician, using the diagnostics in the 1502C Service Manual. If the instrument passed all of the previous checks, it is ready for use.

  • Page 60: Specifications

    27 ft Error 1.0% for distance 14 ft Error 2.0% for distance 7 ft Error 10% for distance 1.5 ft (continued next page) 3–1 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 61 Accuracy Within Custom Option Port Tektronix Chart Recorders YT–1 and YT–1S are designed to operate with the 1502C. Produces a high resolution thermal dot matrix recording of waveform and switch values. Line Voltage 115 VAC (90 to 132 VAC) 45 to 440 Hz, or Fused at 0.3 A...

  • Page 62: Environmental Characteristics

    Operates after test with cover on, non-operating MIL–STD–810, Method 510, Procedure I Washability Capable of being washed Fungus Inert Materials are fungus inert (continued next page) 3–3 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 63: Physical Characteristics

    11.8 inches (300 mm) Depth with cover on 16.5 inches (436 mm) with handle extended to front 18.7 inches (490 mm) 3–4 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 64: Options And Accessories

    Power Cord Options The following power cord options are available for the 1502C TDR. Note that these options require inserting a 0.15 A fuse in the rear panel fuse holder. NOTE. The only power cord rated for outdoor use is the standard cord included with the instrument (unless otherwise specified).

  • Page 65: Accessories

    Connector, BNC female to Type F male ....103–0158–00 4–2 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 66 ........017–0090–00 These adapters should be purchased if GR connectors (017–0063–00 and/or 017–0064–00) are purchased. 4–3 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 67 Options and Accessories 4–4 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 68: Circuit Descriptions

    The 1502C instrument is comprised of several subsections, as shown in the block diagram (Figure 5–1). These are organized as a processor system, which controls several peripheral circuits to achieve overall instrument performance.
  • Page 69 A/D converter Option Port Power Bus Power Supply Control AC to DC DC to DC Converter Converter Battery Figure 5–1: System Block Diagram 5–2 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 70 Cursor and readout display data is determined by the processor and combined with the formatted sample waveform before it is sent to the display. 5–3 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 71: Power Supply

    The transformer secondary voltage is rectified and power switched to power the post regulator. 5–4 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 72 C1010. The large value of this capacitor allows it to supply energy to the instrument between half cycles of the line voltage. 5–5 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 73 L2020, causing the current in L2020 to increase. When Q2022 is turned off, the stored energy in L2020 will cause 5–6 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 74: Processor System

    The processor system provides control and calculation functions for the instrument. A block diagram of the processor system is shown in Figure 5–4 (next page). 5–7 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 75 When +5 VDC power is applied to C1030 and R1032, the rising voltage momentarily applies a positive signal to the input of gate U1031B. The resulting 5–8 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 76 U1022 is used to enable four other 1-of-8 decoders: U2021, U2022, U2024, and U2026. These four decoders are further selected by the four 5–9 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 77: Option Port Interface

    The processor system outputs six control signals to the Driver/Sampler module. These signals are loaded from the data bus into latch U3010 by a select signal from the address decoder. These signals are used by the 1502C Driver/Sampler and the Option 06 adapter (if equipped).
  • Page 78 Circuit Descriptions and safe operation. Further information can be obtained by contacting your Tektronix customer service representative. A block diagram of the option port interface is shown in Figure 5–5. The processor system provides all the data and control for the interface. Data, Address, and Control lines are all buffered for increased drive.
  • Page 79 This is the trigger pulse generated in the analog timebase. Option Port Wiring Configuration J2010 Option Port (on Main Board) (D-Connector) Label ’ ’ ’ ’ RD’ WR’ CS22 5–12 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 80: Video Processor

    DC signal. Sampled video is combined with this vertical position DC voltage in a summing amplifier in order to allow vertical positioning of the displayed waveform. 5–13 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 81 Gain of each of the three amplifier stages is controlled by the processor system by loading latch U2044 with the appropriate 8-bit word from the data bus. Digital word 5–14 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 82: Timebase

    A block diagram of the timebase circuits is shown in Figure 5–8 (next page). 5–15 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 83 Figure 5–8: Timebase Block Diagram A programmable digital counter, clocked at 2.5 MHz, is used to determine the PRT (pulse repetition time) of the driver/sampler test pulse. The 1502C is programmed with a PRT of 350 s. The output of the PRT counter is used to trigger a delay counter, also clocked at 2.5 MHz, to provide coarse (400-ns resolution) digital time...
  • Page 84 (b). The falling edge of this signal triggers the driver strobe (c), which causes a pulse to be applied to the cable test output. 5–17 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 85 The processor adjusts the reference for the timebase DAC so as to sample at the previous level. This matches the analog delay to the 50-ns period of the clock. 5–18 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 86 Circuit Descriptions ∼ ∼ Figure 5–11: Calibration of Delay Zero and 50-ns Analog Delay 5–19 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 87 The collector of Q9021 is clamped to –0.5 VDC between pulses by CR8020 and rises to +6 VDC peak during the 25 ns pulse. This signal is applied 5–20 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 88 DC offset voltage developed in the preceding circuits. A small negative DC voltage of approximately –200 mV is added by voltage divider R7032 and R7025 to hold the voltage comparator off between pulses. 5–21 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 89 10 ns of zero-distance delay adjustment. Components C3048, R3042, R2032, C3047, R2034, and C8024 are used to reduce jitter and cross-coupling between circuits. 5–22 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 90: Driver/Sampler

    TP1060. The signal from the second sampler buffer, U2050A, is also fed to the bridge bias amp, U1070, via R1060. 5–23 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 91 15 V, so the necessary filtering and regulation is accomplished by U3070 and associated circuitry. The +0.6 V supply is used by the hybrid to set 5–24 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 92: Front Panel

    U2024, U3025, and U3031. These switches control: MENU VIEW INPUT VIEW STORE VIEW DIFF STORE 5–25 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 93 To LCD Drivers LCD Drive Voltage Circuitry To EL Backlight Switching Power Circuitry Supply 50 - Pin Connector Figure 5–13: Front Panel Block Diagram 5–26 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 94 FET, turning on the power to the EL power supply. R1031, C3030, and C3031 serve to filter noise introduced to the +16 VDC supply by the EL power supply. 5–27 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 95: Display Module

    LCD Cell Row Driver/Controller Board and Column Driver Board Electroluminescent Backlight Indium Tin Oxide (ITO) Heater Mechanical frame, which supports the above subassemblies 5–28 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 96 (see Front Panel text in this chapter). An electroluminescent backlight provides illumination in low light conditions. LCD Cell The LCD cell provided in the 1502C uses an advanced technology known as Superbirefringent Effect (SBE) to obtain greatly improved contrast and viewing 5–29 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ...
  • Page 97 “on” pixel. COLUMN 1 COLUMN 2 COLUMN 255 COLUMN 256 LOWER HALF UPPER HALF SCREEN SCREEN Figure 5–15: SBE Cell 5–30 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 98 The result is a bit pattern displayed on the screen that represents a waveform. 5–31 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 99 +5 VDC supply voltage for logic and select drive voltage non-select drive voltage non-select drive voltage select voltage GND return for +5 VDC. 5–32 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 100 The level shifter shifts the logical 1s and 0s in the latch into select and non-select voltages according to FR (see table at top of next page). 5–33 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 101 Supply Voltages include the following: +5 VDC supply voltage for logic and select drive voltage non-select voltage non-select voltage select voltage GND return for +5 VDC 5–34 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 102 The level shifter translates the logical 1s and 0s in the latch into select and non-select voltages according to FR (see table, next page). 5–35 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 103 5–36 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 104 XSCL (CLP) shifts in a logic 0 after the pulse. E is held high for a duration long enough to enable the first column driver pair. 5–37 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 105 In that case, it could be either selected read or selected write at the discretion of the CPU. This combinational logic also controls the flow of data through the transceiver. 5–38 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 106 Read Data from Display Memory Display Memory Display Memory to CPU from CPU to Controller Figure 5–21: CPU and Display Memory Interface 5–39 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 107 Front Panel Board. The thermistor leads are attached to pads on the Row Driver/Controller Board, similar to the heater, and routed through the 40-pin connector. 5–40 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 108: Calibration

    Setup menu, or you may use the metric numbers provided. To change the readings to ft/div, press the MENU button. Scroll down to Distance/Div is: m/div 6–1 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 109: Display Module Check

    1. Pull the POWER switch on the front panel. If a message does not appear on the display within a few seconds, turn the instrument off. If start–up assistance needed, Push MENU button. 1502C ROM version 5.04 Ethernet Copyright 1992 Tektronix Redmond, OR Figure 6–1: Typical Start-Up Display...
  • Page 110 NOTE. If the EL Backlight is dim or does not work properly, refer to the Troubleshooting section or the EL Backlight Replacement section in the Maintenance chapter of this manual. 6–3 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 111: Front Panel Check

    Option Port Menu Move Position to select, then push MENU button Figure 6–4: Main Menu 5. Press MENU. This will display the Diagnostics Menu. 6–4 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 112 6. Slowly rotate this control clockwise to its far stop. Each position should increase the switch reading one count, starting at 5 and ending with 14. 6–5 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 113 Hold down MENU button to Exit. Switch: 35 temp: 82 Corresponding Vp: 0.99 Numbers Control Bar Graph Control Vertical Scale Figure 6–8: Front Panel Diagnostic Display 6–6 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 114: Horizontal Scale (Timebase) Check

    1. Set the front-panel controls: CABLE No connection (see text) NOISE FILTER 1 avg VERT SCALE 500 m DIST/DIV .1 ft/div 6–7 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 115 POSITION control, set the cursor on the rising edge of the waveform at the first graticule up from the centerline. 8. Press STORE. 6–8 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 116 3.13 feet. 2.988 ft Figure 6–14: Cursor on Rising Edge of Pulse 12. Remove the 3–ft cable and connect the 50 terminator. 6–9 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 117: Zero Offset Check

    POSITION control to center the baseline before the incident pulse. 4. Increase VERT SCALE to 10 m using the POSITION control to keep the baseline centered on the display. 6–10 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 118 Max Hold can be used to easily monitor any changes, as shown below. –2.000 ft Figure 6–18: Incident Pulse at –2.000 ft with Max Hold 6–11 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 119 POSITION control, verify that the entire waveform can be moved to the very bottom of the display. The top of the pulse should be lower than the center graticule line. 6–12 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 120: Noise Check

    NOISE FILTER control. 1. Set the front-panel controls: CABLE terminator NOISE FILTER 1 avg VERT SCALE 500 m DIST/DIV 10 ft/div 6–13 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 121 8. Press MENU again. 9. Using the same procedure, select Service Diagnostic Menu, then Noise Diagnostic. 10. Read the results on the display. 6–14 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 122: Sampling Efficiency Check

    Offset/Gain Diagnostic RAM/ROM Diagnostics Timebase is: Normal – Auto Correction Move Position to select, then push MENU button Figure 6–25: Service Diagnostic Menu 6–15 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 123: Offset/Gain Check

    TP9041 on the Main Board or TP3051 on the Driver/Sampler Board must be grounded during the check. See the Maintenance chapter for the case and EMI shield removal instructions. 6–16 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 124: Ram/Rom Check

    If the aberrations are out of spec, the ohms-at-cursor function might be less accurate than specified. 1. Set the front-panel controls: CABLE terminator NOISE FILTER 1 avg VERT SCALE 500 m DIST/DIV 5 ft/div 6–17 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 125 POSITION control. All the aberration except the one under the cursor should be within one division of the center graticule line (see Figure 6–31). 6–18 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 126: Risetime Check

    NOISE FILTER 1 avg VERT SCALE 500 m DIST/DIV 0.1 ft/div –0.316 ft Figure 6–32: Incident Pulse at Center of Display 6–19 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 127 (should be about half a division from the top of the pulse). 6–20 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 128: Jitter Check

    .1 ft/div 2. Using the POSITION and the POSITION controls, center the rising edge of the pulse on the center horizontal graticule line. 6–21 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 129 See the Operator chapter for directions on using Max Hold. –1.316 ft Figure 6–38: Rising Edge with Max Hold on 6–22 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 130: Option 04/07: Yt-1/Yt-1S Chart Recorder Check

    Option 05 requires no check other than to turn on the instrument and see if it displays in meters. Instructions for changing the default can be found in the Maintenance chapter of this manual. 6–23 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 131: Adjustment Procedures

    Power Supply Module Power Supply Board Driver/Sampler Board Main Board Figure 6–40: Circuit Board Locations in the Instrument 6–24 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 132: Visual Inspection

    2. Make sure the POWER switch is in the OFF position. 3. Connect the 115 VAC output of the Variac into the AC socket on the rear of the 1502C. 6–25 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 133 R1018 Q1010 R1014 C1015 TP1010 Q1011 U1021 CR1011 C1016 L1010 Q1012 C2013 C2010 Figure 6–42: Power Supply Test Points TP1020 and TP1010 6–26 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 134 J1030/P1030 on the Power Supply Board. Measure the voltages on the pins listed in the table and verify the supply voltages. 6–27 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 135 7. Reduce the Variac output voltage until the +16.2 VDC (and the instrument) shut down. This voltage must be lower than 90 VAC. 6–28 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 136: Main Board

    TP2030 CR2021 Figure 6–46: Power Supply Test Point TP2030 8. Raise the Variac output voltage to 120 VAC. The instrument should remain shut down. 9. Turn the 1502C POWER off. " Main Board 12 VDC Check and Adjust Main Board Figure 6–47: Location of Main Board in Instrument...
  • Page 137 You might have to adjust R1018 (Contrast Adjust) on the Front Panel Board to get a clear display (see LCD Check and Adjustments in this section). 6–30 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 138 Power Supply Board (this is the large diode next to J2010. The positive probe should be on the non-banded end of the diode). 9. Connect the negative probe to ground. 6–31 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 139 (+) CR2012 Figure 6–51: CR2012 on Power Supply Board 10. Turn the 1502C POWER on. The instrument should initialize and go into normal operation. The display will be normal except ac in the upper left corner will have changed to bat.
  • Page 140 Calibration 13. Remove the voltmeter probes from the 1502C. 14. Remove the external 12 VDC power supply cable from the battery connector. 15. Reconnect the battery wire to the Power Supply board and to the battery. 16. Connect the AC supply cord to the rear panel.

  • Page 141: Impedance Check

    T1020 U1010 C2021 C2020 C2010 C2022 C2025 C2023 R3032 C2026 C2024 R3033 TP3020 C2031 C3010 C3011 Figure 6–56: TP1030 on Driver/Sampler Board 6–34 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 142: Lcd Check And Adjustment

    Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Figure 6–58: LCD Pattern with Contrast Too Light 6–35 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 143 While a waveform is on the display, adjust R1018 on the Front Panel Board counterclockwise until most of the display has dimmed. 6–36 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 144 After waiting a few seconds, turn the instrument back on. Reinspect the display for bleeding or fading. Readjust R1018 if necessary. 0.000 ft Figure 6–62: Waveform with Contrast Adjusted Correctly 6–37 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 145: Zero Offset Adjust

    (see Figure 6–64, next page). 6. Set the front-panel controls: CABLE no connection NOISE FILTER 1 avg VERT SCALE 10 m DIST/DIV 0.2 ft/div 6–38 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 146 Figure 6–65: R1042 on Driver/Sampler Board 10. Remove the 3-foot precision cable. 11. Verify that the waveform moves less than 0.5 division. 6–39 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 147: After Adjustments Are Completed

    1. If the instrument is Option 05 (metric), refer to the Maintenance chapter to return the metric default jumper to its proper position. 2. Reinstall the 1502C in its case (refer to the Maintenance chapter of this manual). Care should be taken to follow the directions to maintain watertight integrity of the case.

  • Page 148: Maintenance

    Please refer to schematics for physical location of circuits and components. NOTE. We recommend that service be performed at an authorized Tektronix Service Center or by a technician skilled in sampling and pulse techniques.

  • Page 149: Part Removal And Replacement

    REMOVE REMOVE CAP TO CAP TO SELECT REPLACE VOLTAGE FUSE Figure 7–1: Location of Voltage Selector and Fuse Holder on Rear Panel 7–2 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 150 4. Remove two screws holding the power supply module to the rear chassis panel. One is located near the AC power receptacle and the other is directly above the fuse holder (Figure 7–2, 6). 7–3 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 151 1. Remove the power supply module per previous procedure. 2. Remove the two-conductor harmonica connector (Figure 7–2, 3). 3. Remove the four-conductor harmonica connector (Figure 7–2, 2). 7–4 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 152 3. Unsolder the two wires from the fuse holder. 4. Unscrew the hold-down nuts from both units. 5. Remove both units from the rear of the module. 7–5 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 153 5. Remove the Main Board, taking care to avoid binding on the power switch mechanical linkage. NOTE. One of the corner screws (see Figure 7–3) holds a ground strap connector. 7–6 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 154 2. When installing a new EPROM, make sure the notch in the IC is facing toward the front of the instrument and all pins are inserted correctly in the socket. 7–7 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 155 4. Install a new battery and solder the leads to the Main Board. CAUTION. Be sure that the new battery is one that is supplied or authorized by Tektronix. An improper replacement cell could cause irreversible damage to the Main Board circuitry.
  • Page 156 CAUTION. Take care not to use a sharp object to remove the buttons because it might puncture the rubber boot, thereby subjecting the instrument to moisture/water intrusion. 7–9 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 157 2. Disconnect the ribbon cable from the boards. 3. Carefully separate the Display Module from the Front Panel Board. Figure 7–7: Display Module/Front Panel Board Showing Hex Nuts 7–10 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 158 4. Using a needle-nose plier, slip the jumper off the pins and move it to the desired default position (top for meters, bottom for feet). 7–11 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 159: Troubleshooting

    1 avg (3rd position CW) VERT SCALE default DIST/DIV 1 ft/div (4th position CW) Vertical Position default Horizontal Position default (waveform figures located on page 7–16) 7–12 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 160 Maintenance 7–13 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 161 Check sampler on Check analog delay Check digital delay Check pulser on front end board on main board. on main board. front end board. 7–14 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 162 TP4020 and TP4021 on main board. Check digital delay Check analog delay Run Calibration on main board. on main board. Performance Check. 7–15 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 163 Figure 7–11: Main Board TP3041 Main Board TP4040 (waveforms continued next page) 100uS 20nS Figure 7–12: Main Board TP6010 Main Board TP7010 7–16 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 164: Control Panel Installation

    Main Board TP9041 Figure 7–14: Front Panel CABLE Connector When All Else Fails If it becomes necessary to ship the instrument to an authorized Tektronix Service Center, follow the packing instructions as described in Repacking for Shipment on page xiv.
  • Page 165 The instrument rotary controls, the fuse and line voltage select access covers are sealed with rubber O-rings. These are not glued in place, but should be inspected and replaced if necessary. 7–18 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 166: Installing The Case Cover Over The Chassis

    If not mated properly, loosen the screws, reposition the case, then tighten the screws again. 7–19 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 167 Maintenance 7–20 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 168: Replaceable Electrical Parts

    When ordering parts, include the part number plus instrument type, serial number, and modification number (if applicable). If a part is replaced with a new or improved part, your Tektronix representative will contact you regarding any change in part number.
  • Page 169 This column lists the code number of the manufacturer of the part. Mfg. Part Number (Column 7) This column lists the manufacturer’s part number. 8–2 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 170 WEST PALM BEACH FL 33407 21847 FEI MICROWAVE INC 825 STEWART DR SUNNYVALE CA 94086–4514 22526 BERG ELECTRONICS 825 OLD TRAIL RD ETTERS PA 17319 8–3 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 171 COUPLES DEPT C – PORTER STS PO BOX 47 JOPLIN MO 64801 91637 DALE ELECTRONICS INC 2064 12TH AVE PO BOX 609 COLUMBUS NE 68601–3632 8–4 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 172 CKT BD ASSY:DISPLAY MODULE 80009 672–1241–00 118–9050–01 B021405 CKT BD ASSY:DISPLAY MODULE 80009 118–9050–01 (REPLACEABLE AS A UNIT ONLY) ––––– ––––– CABLE/WIRE ASSEMBLIES 8–5 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 173 CAP,FXD,CER DI:MLC,0.22UF,20%,50V,Z5U 31433 C114C224M5Y5CA A1A1C2031 281–0925–01 CAP,FXD,CER DI:MLC,0.22UF,20%,50V,Z5U 31433 C114C224M5Y5CA A1A1C2032 281–0925–01 CAP,FXD,CER DI:MLC,0.22UF,20%,50V,Z5U 31433 C114C224M5Y5CA A1A1C2033 281–0925–01 CAP,FXD,CER DI:MLC,0.22UF,20%,50V,Z5U 31433 C114C224M5Y5CA 8–6 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 174 CAP,FXD,CER DI:1000PF,5%,200V SQ 31433 C322C102J2G5CA A1A1C4022 285–1241–00 CAP,FXD,PLASTIC:0.22UF,10%,100V 12954 B32571.22/10/100 A1A1C4030 281–0925–01 CAP,FXD,CER DI:MLC,0.22UF,20%,50V,Z5U 31433 C114C224M5Y5CA A1A1C4040 281–0813–00 CAP,FXD,CER DI:MLC,0.04UF,20%,50V 04222 SA105E473MAA 8–7 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 175 C114C224M5Y5CA A1A1C8020 283–0010–00 CAP,FXD,CER DI:0.05UF,+80–20%,50V SQ 04222 SR305E503ZAA A1A1C8021 281–0798–00 CAP,FXD,CER DI:51PF,1%,100V TUBULAR,MI 04222 SA101A510GAA A1A1C8022 283–0330–00 CAP,FXD,CER DI:100PF,5%,50V SQ 16546 CN15C101J 8–8 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 176 DIODE DVC,DI:SI,SCHOTTKY,20V,1.2PF 21847 A2X1582 A1A1CR5040 152–0322–00 DIODE DVC,DI:SCHOTTKY,SI,15V,1.2PF 21847 A2X600 A1A1CR8020 152–0322–00 DIODE DVC,DI:SCHOTTKY,SI,15V,1.2PF 21847 A2X600 A1A1CR9010 152–0322–00 DIODE DVC,DI:SCHOTTKY,SI,15V,1.2PF 21847 A2X600 8–9 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 177 151–0271–00 XSTR,SIG:BIPOLAR,PNP;15V,30MA,2.0GHZ,AMP 01295 SKA4504 A1A1R1010 322–3162–00 RES,FXD:METAL FILM:475 OHM,1%,0.2W 57668 CRB20 FXE 475E A1A1R1011 322–3289–00 RES,FXD:METAL FILM:10.0K OHM,1%,0.2W 57668 CRB20 FXE 10K0 8–10 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 178 RES,FXD,FILM:49.9K OHM,1%,0.2W 57668 CRB20 FXE 49K9 A1A1R3032 322–3327–00 RES,FXD,FILM:24.9K OHM,1%,0.2W 57668 CRB20 FXE 24K9 A1A1R3033 322–3165–00 RES,FXD,FILM:511 OHM,1%,0.2W 57668 CRB20 FXE 511E 8–11 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 179 RES,FXD:METAL FILM:10 OHM,1%,0.2W 57668 CRB20 FXE10E0 A1A1R5025 322–3001–00 RES,FXD:METAL FILM:10 OHM,1%,0.2W 57668 CRB20 FXE10E0 A1A1R5026 322–3068–00 RES,FXD:METAL FILM:49.9 OHM,0.1%,0.2W 57668 CRB20 FXE 49E9 8–12 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 180 57668 CRB20 FXE 1K00 A1A1R7026 322–3193–00 RES,FXD:METAL FILM:1K OHM,1%,0.2W 57668 CRB20 FXE 1K00 A1A1R7027 322–3097–00 RES,FXD:METAL FILM:100 OHM,1%,0.2W 57668 CRB20 FXE 100E 8–13 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 181 322–3289–00 RES,FXD:METAL FILM:10.0K OHM,1%,0.2W 57668 CRB20 FXE 10K0 A1A1R9010 322–3114–00 RES,FXD:METAL FILM:150 OHM,1%,0.2W 57668 CRB20–FX150E A1A1R9011 322–3258–00 RES,FXD:METAL FILM:4.75K OHM,1%,0.2W 56845 CCF50–2–G4751FT 8–14 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 182 A1A1TP9040 214–0579–02 B010100 B037261 TERM,TEST POINT:0.052 ID,0.169 H,0.465 L 10392 7–16150–8 A1A1TP9041 214–0579–02 B010100 B037261 TERM,TEST POINT:0.052 ID,0.169 H,0.465 L 10392 7–16150–8 8–15 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 183 01295 74ALS113 A1A1U2034 156–2092–00 IC,DIGITAL:ALSTTL,GATE;QUAD 2–INPUT NOR 01295 SN74ALS02N A1A1U2036 156–2096–00 IC,DIGITAL:ALSTTL,FLIP FLOP;QUAD D–TYPE 01295 SN74ALS175N A1A1U2037 156–2098–00 IC,DIGITAL:ALSTTL,COUNTER;SYNCH 4–BIT 01295 SN74ALS161BN 8–16 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 184 IC,LINEAR:MOS/FET INP,COS/MOS OUT,OP AMP 34371 CA3160E A1A1U9030 156–0496–00 IC,LINEAR:VOLTAGE REGULATOR RC4194D,MI 34333 SG4194CJ A1A1VR3030 152–0647–00 DIODE,ZENER:6.8V,5%,0.4W;1N957B 04713 1N957B A1A1VR6030 152–0514–00 DIODE,ZENER:10V,1%,0.4W;MZ4104D 04713 MZ4104D 8–17 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 185 A2C3034 281–0925–01 CAP,FXD,CER DI:MLC,0.22UF,20%,50V,ZRU 31433 C114C224M5Y5CA A2J1020 131–3147–00 CONN,HDR:PCB,MALE,STR,2 X 25,0.1 CTR 22526 66506–032 A2J3030 131–1857–00 CONN,HDR:PCB,MALE,STR,1 X 36,0.1 CTR 58050 082–3644–SS10 8–18 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 186 57668 CRB20 FXE 100K A2R2036 322–3385–00 RES,FXD:METAL FILM:100K OHM,1%,0.2W 57668 CRB20 FXE 100K A2R2037 322–3385–00 RES,FXD:METAL FILM:100K OHM,1%,0.2W 57668 CRB20 FXE 100K 8–19 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 187 IC,DIGITAL:HCMOS,GATE;QUAD 2–INPUT NOR 04713 MC74HC02AN A2U3023 156–2026–00 IC,DIGITAL:HCMOS,GATE;QUAD 2–INPUT NOR 04713 MC74HC02AN A2U3025 156–2758–00 IC,DIGITAL:HCMOS,MUX/ENCODER;DUAL 0JR04 TC74HC253AP A2U3031 156–2758–00 IC,DIGITAL:HCMOS,MUX/ENCODER;DUAL 0JR04 TC74HC253AP 8–20 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 188 290–0973–01 CAP,FXD,ELCTLT:100UF,20%,25VDC AL 62643 SME35VB101M8X11FT A3A1C2013 283–0198–00 CAP,FXD,CER DI:0.22UF,20%,50V 04222 SR305C224MAA A3A1C2020 283–0051–00 CAP,FXD,CER DI:0.0033UF,5%,100V 04222 SR301A332JAA A3A1C2021 290–0745–02 CAP,FXD,ELCTLT:22UF,+50–10%,25V,AL 55680 UVX2A220MPA 8–21 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 189 082–3644–SS10 A3A1 670–9286–XX CIRCUIT BD ASSY:POWER SUPPLY (Con’t) A3A1L1010 108–1230–00 COIL,RF:FIXED,100UH,5% POT CORE 54937 500–3990 A3A1L2020 108–1230–00 COIL,RF:FIXED,100UH,5% POT CORE 54937 500–3990 8–22 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 190 322–3300–02 RES,FXD,FILM:13K OHM,1%,0.2W 57668 CRB20 DYE 13K0 A3A1R2012 308–0739–00 RES,FXD,WW:4 OHM,1%,3W 01686 T2B–79–4 A3A1R2013 322–3385–00 RES,FXD:METAL FILM:100K OHM,1%,0.2W 57668 CRB20 FXE 100K 8–23 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 191 A3A1U1020 156–1225–00 IC,LINEAR:BIPOLAR,COMPARATOR;DUAL 04713 LM393N A3A1U1021 156–1225–00 IC,LINEAR:BIPOLAR,COMPARATOR;DUAL 04713 LM393N A3A1U1022 156–1173–00 IC,LINEAR:BIPOLAR,VOLT REF;POS,2.5V,1.0% 04713 MC1403U A3A1U1023 156–0933–00 IC,LINEAR:REGULATOR,PULSE WIDTH 34333 SG3524N 8–24 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 192 281–0775–00 CAP,FXD,CER DI:0.1UF,20%,50V 04222 SA105E104MAA A4C2042 281–0861–00 CAP,FXD,CER DI:270PF,5%,50V 04222 SA101A271JAA A4C2050 281–0775–00 CAP,FXD,CER DI:0.1UF,20%,50V 04222 SA105E104MAA A4C2051 290–0522–01 CAP,FXD,ELCTLT:1UF,20%,50V 31433 T355B105M050AS 8–25 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 193 21847 A2X600 A4CR3021 152–0322–00 DIODE DVC,DI:SCHOTTKY,SI,15V,1.2PF 21847 A2X600 A4J3040 131–3360–00 CONN,HDR:PCB,MALE,STR,2 X 10,0.1 CTR 53387 3592–6002 A4L2080 108–1032–00 COIL,RF:FXD,225UH,20% TOROIDAL 0JR03 108–1032–00 8–26 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 194 RES,FXD,FILM:10K OHM,5%,0.25W 01121 CB1035 A4R2040 315–0101–00 RES,FXD,FILM:100 OHM,5%,0.25W 01121 CB1015 A4R2041 315–0511–00 RES,FXD,FILM:510 OHM,5%,0.25W 01121 CB5115 A4R2042 315–0101–00 RES,FXD,FILM:100 OHM,5%,0.25W 01121 CB1015 8–27 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 195 A4TP1080 214–0579–00 B020000 B021172 TERM,TEST POINT:0.052 ID,0.169 H,0.465 L 80009 214–0579–00 A4TP1081 214–0579–00 B020000 B021172 TERM,TEST POINT:0.052 ID,0.169 H,0.465 L 80009 214–0579–00 8–28 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 196 CA ASSY,PWR:2 STRAND W/CONNECTOR 80009 174–0957–00 (FROM A3T201 TO POWER SUPPLY) 198–5460–01 WIRE SET,ELEC:POWER SUPPLY MODULE 060D9 198–5460–01 (CONN AND GROUND WIRE, SET OF TWO) 8–29 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 197 Replaceable Electrical Parts 8–30 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 198: Diagrams

    Therefore, logic symbols should reflect manufacturer’s data. Component Values Electrical components shown on the diagrams are in the following units: Resitstors = Ohm (Ω) 9–1 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 199 The component number may then be used to reference a part in the replaceable electrical parts list. 9–2 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 200 Connector to 3D Instrument type Board name Functional name Assembly Assembly Diagram part number reference number number Figure 9–1: Special Schematic Symbols 9–3 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 201 C2041 CR5040 C2042 C6032 CR8020 C7010 CR9010 C2043 C7020 C2044 C7021 J2010 C2045 C7022 J5040 † C2046 C7023 J6010 Back Side Components 9–4 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 202 R7014 R1015 R4030 R7015 R1016 R4031 R7020 R1020 R4032 R7021 R1021 R4040 R7022 R1022 R4041 R7023 R1023 R4042 R7024 Back Side Components 9–5 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 203 U2036 U1031C R9013 U1031D U2037 R9014 U1031E U2040A R9015 U1031F U2040B R9020 U1032A U2040C R9021 U1032B U2040D R9022 U2041 Back Side Components 9–6 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 204 U4020 U4021A U4021B U4040 U5010 U5020 U5040 U6040 U7010A U7010B U7040 U8010A U8010B U8010C U8040 U8041 U9030 VR3030 VR6030 Back Side Components 9–7 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 205 S1011 S2010 Q1020 S2011 Q1030 S3010 Q2020 S3012 R1010 S3020 R1011 S3021 R1012 S3022 R1013 R1014 U2010A R1020 U2010B Back Side Components 9–8 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 206 CR1010 R1010 R2032 CR1011 R1011 CR1030 R1012 S2010 CR1031 R1013 CR1032 R1014 T1030 CR1033 R1015 T1031 CR1034 R1016 TP1010 Back Side Components 9–9 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 207 TP1020 TP2010 TP2030 U1010 U1011 U1020A U1020B U1021A U1021B U1022 U1023 U1024B U2010 U2030A U2030B U2030C U2030D U2030E VR1012 Back Side Components 9–10 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 208 R1042 R3070 C2083 R1050 R3071 C3010 R1051 R3080 R1052 C3011 R1053 T1020 C3020 R1060 C3030 TP1020 C3060 R1061 TP1021 Back Side Components 9–11 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 209 TP1080 TP1081 TP1082 TP1083 TP1084 TP2060 TP3020 U1010 U1050A U1050B U1070A U1070B U2050A U2050B U2070 U3030A U3030B U3070A U3070B Back Side Components 9–12 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 210 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 211 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 212 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 213 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 214 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 215 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 216 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 217 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 218 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 219 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 220 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 221 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 222 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 223 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 224 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 225 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 226 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 227 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 228: Replaceable Mechanical Parts

    Replaceable Mechanical Parts This section contains a list of the replaceable mechanical components for the 1502C. Use this list to identify and order replacement parts. Parts Ordering Information Replacement parts are available through your local Tektronix field office or representative.
  • Page 229 Items in this section are referenced by figure and index numbers to the exploded view illustrations that follow. Tektronix Part Number Use this part number when ordering replacement parts from Tektronix. 3 and 4 Serial Number Column three indicates the serial number at which the part was first effective. Column four indicates the serial number at which the part was discontinued.
  • Page 230 KINGS ELECTRONICS CO INC 40 MARBLEDALE ROAD TUCKAHOE, NY 10707–3420 98291 ITT CANNON RF PRODUCTS 585 E MAIN ST NEW BRITAIN, CT 06051 10–3 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 231 . COVER,FUSE:VOLTAGE SELECT,PC,CLEAR 0JR05 200–3805–00 –28 214–4276–00 . THUMBSCREW:6–32 X 0.50,0.317 OD,SST TK2324 214–4276–00 –29 348–1167–00 . GASKET:FUSE & VOLTAGE SELECT COVER 0JRZ5 348–1167–00 10–4 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 232 SCREW,TYPE–F:6–32 X .500,FLH,POS,410 SS OKB01 213–1089–00 –17 614–0389–01 FRONT PANEL ASSEMBLY 80009 614–0389–01 –18 348–0477–00 . SEAL,RBR STRIP:0.94W X 0.062THK X 28.0L 2K262 R–10460 10–5 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 233 0KB01 ORD BY DESCR –42 210–0458–00 NUT,PL,ASSEM WA:8–32 X 0.344 0KB01 ORD BY DESCR –43 ––––– ––––– CA ASSY: (SEE WIRE ASSEMBLIES) 10–6 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 234 . CONN,HDR:PCB,MALE,2 X 10 53387 2520–5002UB –69 136–0755–00 . SKT,DIP:FEMALE,2 X 14 00779 2–641605–3 –70 131–4183–00 . CONN,HDR:PCB,MALE,2 X 7 53387 2514–6002UB 10–7 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 235 85471 R–1047OMED/PSA –77 146–0066–00 . BATTERY:12V LEAD ACID,3.4AH,5.28 X 2.36 X 2.6 RECT 0DWW6 LCR–12V3.4P ––––– ––––– . CA ASSY:(SEE WIRE ASSYS) 10–8 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 236 210–0202–00 –23 211–0658–00 . SCR,ASSEM,WA:6–32 X 0.312,PNH,POZ 0KB01 211–0658–00 –24 ––––– ––––– . CHASSIS,PWR SUPPLY: 334–3379–01 . MARKER,IDENT:MKD GROUND SYMBOL 0KB05 334–3379–01 10–9 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 237 Replaceable Mechanical Parts List (Cont.) Fig. & Tektronix Part Serial No. Serial No. Mfr. Index Number Effective Discont’d Name & Description Code Mfr. Part Number Number 10–10 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 238 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 239 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 240 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 241 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 242 The designed impedance is often called the characteristic impedance of the cable. The arrangement of the conductors with respect to each other is the major factor in designing the impedance of cables. Glossary–1 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 243 TDR consists of this pulse and the reflections of it coming back from the cable or circuit being tested. Inductance (see Reactance) Glossary–2 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 244 More waveforms in an average are more likely to approach the real signal (although it takes longer to acquire and add together more waveforms). Glossary–3 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 245 Our instruments make measurements by taking a succession of samples in time and displaying them as a waveform with voltage on the vertical scale (up and down) and Glossary–4 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 246 0.50 indicates that the electrical energy moves through the cable at half the speed of light. Waveform Averaging (see Noise) Glossary–5 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 247 Glossary Glossary–6 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 248 Visual Inspection, 6–25 Memory, 5–36 Zero Offset, 6–38 Memory Interface, 5–38 General, 6–1 Row Driver, 5–32 Performance Check, 6–1 Block Diagram, 5-31 Battery, 6–23 Index–1 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 249 General, 5–7 Depth Spec, 3–4 Interrupt Logic, 5–10 Diagrams Memory, 5–9 Component Locator Microprocessor, 5–8 Driver/Sampler Board, 9–29 Non-volatile RAM Space, 5–9 Index–2 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 250 Driver/Sampler Board, Removal, 7–9 Fungus Spec, 3–3 Remove Case, 7–3 Fuse, 4–2 Remove EMI Shields, 7–3 Fuse (see Power) Sealing Materials, 7–18 Index–3 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 251 Product Description, xiii Velocity of Propagation, 1–8 Pulse, 1–27 View Stored Waveform, 1–10 References, xiii Noise (see also Controls), 1–6 Reflection Coefficient, 1–15 Index–4 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 252 Water Resistance Spec, 3–3 Salt Atmosphere Spec, 3–3 Waveform Storage, 1–18 Sand and Dust Spec, 3–3 Weight Spec, 3–4 Scale (see Controls) Index–5 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 253 Index Index–6 1502C MTDR Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

Table of Contents