HP 83447A User's And Service Manual
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HP 83447A User's And Service Manual

Lightwave trigger receiver
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User and Service Guide
HP 83447A Lightwave
Trigger Receiver

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Summary of Contents for HP 83447A

  • Page 1 User and Service Guide HP 83447A Lightwave Trigger Receiver...
  • Page 2 Notice. Restricted Rights Legend.

  • Page 3: Printing History

    Printing History HP Part Number Edition Date...

  • Page 4: Safety Symbols

    Safety Symbols caution C A U T I O N caution warning sign denotes a life-threatening hazard. It calls attention to a W A R N I N G procedure which, if not correctly performed or adhered to, could result warning in injury or loss of life.

  • Page 5: General Safety Considerations

    General Safety Considerations This is a Safety Class I product (provided with a protective earthing W A R N I N G ground incorporated in the power cord). The mains plug shall only be inserted in a socket outlet provided with a protective earth contact. Any interruption of the protective conductor inside or outside of the instrument is likely to make the instrument dangerous.
  • Page 6 C A U T I O N...
  • Page 7 Certi cation and Assistance Product maintenance agreements and other customer assistance agreements are available for Hewlett-Packard products. For any assistance, contact your nearest Hewlett-Packard Sales and Service Oce.

  • Page 8: Warranty

    Warranty Limitation of Warranty Exclusive Remedies...

  • Page 9: In This Book

    In This Book...
  • Page 11 Installation and Preparation for Use Installing the HP 83447A ....Step 1. Inspect the shipment ... .
  • Page 12 Replaceable parts Servicing the HP 83447A General Information ....Troubleshooting ....
  • Page 13 Figures...
  • Page 14 Tables...

  • Page 15: General Information

    General Information...
  • Page 16 General Information What you'll nd in this chapter A brief description of the HP 83447A lightwave trigger receiver. A list of options and accessories available. HP 83447A speci cations and characteristics. Information about the lightwave receiver's serial number label. Information about avoiding damage to the instrument from electrostatic discharge.
  • Page 17 Description of the HP 83447A Learning the inside story...
  • Page 18 General Information Description of the HP 83447A Figure 1-1. HP 83447A block diagram. Accessories supplied HP 83447A Lightwave Trigger Receiver User and Service Guide...
  • Page 19 General Information Description of the HP 83447A Serial Numbers...

  • Page 20: Front Panel Features

    General Information Description of the HP 83447A Front-panel features Figure 1-2. The HP 83447A front panel. TRIGGER OUT OPTICAL OUT OPTICAL IN N O T E Optical output power is typically 1 dB lower than the input power.
  • Page 21 General Information Description of the HP 83447A Light energy connected to the instrument's OPTICAL IN connector W A R N I N G radiates from the instrument's OPTICAL OUT connector. It is only slightly attenuated.
  • Page 22 HP 83447A Speci cations and Characteristics characteristics Characteristics Characteristics are printed in italics. warranted warranted...
  • Page 23 General Information HP 83447A Speci cations and Characteristics Table 1-1. HP 83447A Speci cations and Characteristics Speci cations HP 83447A > > Characteristics Maximum output jitter measurement. < 1000 Mb/s at 15 dBm 0.012 UI (rms) < 1000 Mb/s at 20 dBm 0.02 UI (rms) >...
  • Page 24 General Information HP 83447A Speci cations and Characteristics Table 1-1. HP 83447A Speci cations and Characteristics, continued GENERAL SPECIFICATIONS Temperature Range Humidity Altitude EMI Compatibility Power Requirements Installation Category Pollution Degree Usage Weight (characteristic) 3.36 kg (7.5 lb) Dimensions FRONT-PANEL INPUT / OUTPUT...

  • Page 25: Declaration Of Conformity

    Declaration of Conformity...

  • Page 26: Electrostatic Discharge Information

    Electrostatic Discharge Information These techniques for a static-safe work station should not be used when W A R N I N G working on circuitry with a voltage potential greater than 500 volts.
  • Page 27 General Information Electrostatic Discharge Information Figure 1-3. Example of a static-safe work station.

  • Page 28: Reducing Esd Damage

    General Information Electrostatic Discharge Information Reducing ESD damage Table 1-2. Static-Safe Accessories HP Part Number Description...

  • Page 29: Installation And Preparation For Use

    Installation and Preparation for Use...
  • Page 30 What you'll nd in this chapter Installing the HP 83447A. Connecting the HP 83447A lightwave trigger receiver to a high-speed oscilloscope. How to perform a quick con dence check of the HP 83447A. How to return the HP 83447A for service.

  • Page 31: Step 1. Inspect The Shipment

    Installing the HP 83447A C A U T I O N C A U T I O N Step 1. Inspect the shipment...
  • Page 32 Installation and Preparation for Use Installing the HP 83447A Step 2. Set the line voltage selector C A U T I O N Figure 2-1. Opening the fuse holder door. C A U T I O N...

  • Page 33: Step 3. Check The Fuse

    Installation and Preparation for Use Installing the HP 83447A Step 3. Check the fuse For continued protection against re hazard, replace line fuse only with W A R N I N G same type and ratings. The use of other fuses or materials is prohibited.
  • Page 34 Installation and Preparation for Use Installing the HP 83447A Step 4. Connect the HP 83447A to a power source Do not C A U T I O N Table 2-1. HP 83447A Power Requirements Characteristic Requirement Power cable Failure to ground the lightwave receiver properly can result in personal W A R N I N G injury.
  • Page 35 Installation and Preparation for Use Installing the HP 83447A C A U T I O N...
  • Page 36 Installation and Preparation for Use Installing the HP 83447A Figure 2-3. AC power cables available.
  • Page 37 Installation and Preparation for Use Installing the HP 83447A Step 5. Turn on the HP 83447A...
  • Page 38 Connecting the HP 83447A to a Digital Communications Analyzer Figure 2-4. Connecting the HP 83447A to a digital communications analyzer. OPTICAL OUT OPTICAL IN...
  • Page 39 Installation and Preparation for Use Connecting the HP 83447A to a Digital Communications Analyzer OPTICAL IN C A U T I O N OPTICAL OUT TRIGGER OUT Light energy connected to the instrument's OPTICAL IN connector W A R N I N G radiates from the instrument's OPTICAL OUT connector.
  • Page 40 Performing a Quick Con dence Check > If the veri cation check fails...
  • Page 41 Installation and Preparation for Use Performing a Quick Con dence Check No operator serviceable parts inside. Refer servicing to quali ed W A R N I N G personnel. To prevent electrical shock do not remove covers.
  • Page 42 How to Return the HP 83447A for Service Packaging : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : :...
  • Page 43 Installation and Preparation for Use How to Return the HP 83447A for Service Instrument shipping preparation procedure C A U T I O N...
  • Page 44 Installation and Preparation for Use How to Return the HP 83447A for Service Sales and service oces...
  • Page 45 Installation and Preparation for Use How to Return the HP 83447A for Service Table 2-2. Hewlett-Packard Sales and Service Oces U.S. FIELD OPERATIONS Headquarters California, Northern California, Southern Colorado Georgia Illinois New Jersey Texas EUROPEAN FIELD OPERATIONS Headquarters France Germany...
  • Page 46 Installation and Preparation for Use How to Return the HP 83447A for Service Table 2-2. Hewlett-Packard Sales and Service Oces (continued) INTERCON FIELD OPERATIONS Headquarters Australia Canada China Japan Singapore Taiwan...

  • Page 47: Cleaning Connections For Accurate Measurements

    Cleaning Connections for Accurate Measurements C A U T I O N Cleaning Accessories Item HP Part Number...
  • Page 48 Installation and Preparation for Use Cleaning Connections for Accurate Measurements Dust Caps Provided with Lightwave Instruments Item HP Part Number Inspecting Fiber-Optic Cables You can visually inspect your cables Although it is not necessary, visual inspection of ber ends can be helpful. Contamination or imperfections on the cable end face can be detected as well as cracks or chips in the ber itself.
  • Page 49 Installation and Preparation for Use Cleaning Connections for Accurate Measurements To clean a non-lensed connector C A U T I O N C A U T I O N...
  • Page 50 Installation and Preparation for Use Cleaning Connections for Accurate Measurements To clean an adapter C A U T I O N...
  • Page 51 Using the HP 83447A...
  • Page 52 Example of generating oscilloscope eye diagrams when a separate trigger signal is not available. The HP 83447A may also be used as a general purpose receiver when a linear response is not required. Its limiting ampli er makes it appropriate for digital signals.
  • Page 53 Waveform Test Triggering on data versus triggering on clock...
  • Page 54 Using the HP 83447A Waveform Test Figure 3-1. Setup for measuring eye diagram by triggering from recovered trigger.
  • Page 55 Servicing the HP 83447A...
  • Page 56 Servicing the HP 83447A What you'll nd in this chapter General information Troubleshooting Adjustment procedures Performance tests Replacement procedures Replaceable parts These servicing instructions are for use by quali ed personnel only. W A R N I N G To avoid electrical shock, do not perform any servicing unless you are quali ed to do so.
  • Page 57 General Information N O T E Clean the cabinet using a damp cloth only. Serial-number information Safety considerations Failure to ground the lightwave trigger receiver properly can result in W A R N I N G personal injury, as well as instrument damage. Before turning on the lightwave trigger receiver, connect a three-wire power cable with a standard IEC 320-C13 (CEE 22-V) inlet plug to the lightwave receiver power receptacle.
  • Page 58 Servicing the HP 83447A General Information Reliability considerations Protection from electrostatic discharge Required service tools Table 4-1. Required Tools Description HP Part Number Description Suhner P/N...

  • Page 59: Troubleshooting

    Troubleshooting Figure 4-1. HP 83447A block diagram.
  • Page 60 Servicing the HP 83447A Troubleshooting The opening of covers or removal of parts is likely to expose dangerous W A R N I N G voltages. Disconnect the instrument from all voltage sources while it is being opened. The power cord is connected to internal capacitors that may remain live W A R N I N G for ve seconds after disconnecting the plug from its power supply.
  • Page 61 Servicing the HP 83447A Troubleshooting Optical coupler Photodetector assembly...
  • Page 62 Servicing the HP 83447A Troubleshooting Troubleshooting the power supply N O T E The power supply +5 V output is a oating output and is wired to supply 5.2 V to the detector card. Table 4-2. Voltages on the DC Power Supply Terminals...

  • Page 63: Adjustment Procedures

    Adjustment Procedures Power supply adjustment procedure Only trained service personnel should perform measurements inside the W A R N I N G instrument chassis. Use extreme care. The exposed terminals on the power supply transformer carry ac line voltage. You can be killed or seriously injured if you contact them when power is applied.
  • Page 64 Servicing the HP 83447A Adjustment Procedures...
  • Page 65 Servicing the HP 83447A Adjustment Procedures Photodetector assembly adjustment procedure...

  • Page 66: Performance Tests

    Performance Tests Table 4-3. Required Test Equipment Model Number Type...
  • Page 67 Servicing the HP 83447A Performance Tests Test 1. Through-path optical insertion loss Test Setup Figure 4-2. Through-path optical insertion loss test setup. Perform this procedure rst with a 1310 nm source and then with a Procedure 1550 nm laser source.
  • Page 68 Servicing the HP 83447A Performance Tests at wavelength 1310 nm: at wavelength 1550 nm:...
  • Page 69 Servicing the HP 83447A Performance Tests Test 2. Trigger output amplitude Test Setup Figure 4-3. Laser transmitter setup.
  • Page 70 Servicing the HP 83447A Performance Tests Table 4-4. Laser Transmitter Setup...
  • Page 71 Servicing the HP 83447A Performance Tests Perform this procedure rst with a 1310 nm source and then with a 1550 nm laser source. Figure 4-4. General test setup.
  • Page 72 Servicing the HP 83447A Performance Tests Table 4-5. Trigger Output Amplitude Test Setup > >...
  • Page 73 Servicing the HP 83447A Performance Tests NNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN Display Color Grade at wavelength 1310 nm: > at wavelength 1550 nm: > at wavelength 1310 nm: > at wavelength 1550 nm: >...
  • Page 74 Servicing the HP 83447A Performance Tests OPTICAL INPUT at wavelength 1310 nm: at wavelength 1550 nm: C A U T I O N +VAPD adjustment Hazardous voltage because +VAPD is nominally 100 Vdc. Use caution W A R N I N G when making this measurement.
  • Page 75 Servicing the HP 83447A Performance Tests Clock Source : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : :...
  • Page 76 Servicing the HP 83447A Performance Tests High input limit adjustment OPTICAL INPUT OPTICAL INPUT...
  • Page 77 Servicing the HP 83447A Performance Tests Test 3. Trigger output RMS jitter Test Setup Perform this procedure rst with a 1310 nm source and then with a Procedure 1550 nm laser source. <...
  • Page 78 Servicing the HP 83447A Performance Tests at wavelength 1310 nm: at wavelength 1550 nm: at wavelength 1310 nm: at wavelength 1550 nm: at wavelength 1310 nm: at wavelength 1550 nm:...
  • Page 79 Servicing the HP 83447A Performance Tests at wavelength 1310 nm: at wavelength 1550 nm: at wavelength 1310 nm: at wavelength 1550 nm:...
  • Page 80 Servicing the HP 83447A Performance Tests Test 4. Trigger port electrical return loss Test Setup Figure 4-5. Electrical return loss test setup.
  • Page 81 Servicing the HP 83447A Performance Tests Clock source : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : :...
  • Page 82 Servicing the HP 83447A Performance Tests : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : :...
  • Page 83 Servicing the HP 83447A Performance Tests Test 5. Input optical return loss Test equipment Table 4-6. Input Optical Return Loss Product Description Quantity Procedure OPTICAL OUTPUT OPTICAL INPUT OPTICAL OUTPUT...
  • Page 84 Servicing the HP 83447A Performance Tests : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : :...

  • Page 85: Replacement Procedures

    Replacement Procedures What you'll nd in this section This section contains the replacement procedures for the following assemblies: RF cable and RF connector AC cable assembly Power supply Photodetector assembly C A U T I O N...
  • Page 86 Servicing the HP 83447A Replacement Procedures Replacing the RF cable or the RF connector C A U T I O N Do not overtighten. N O T E Replacing the RF cable or the RF connector may cause the trigger receiver to no longer meet the speci cations and characteristics.
  • Page 87 Servicing the HP 83447A Replacement Procedures Replacing the ac cable assembly Figure 4-6. Wiring diagram for the line module.
  • Page 88 Servicing the HP 83447A Replacement Procedures Table 4-8. Line Module to DC Power Supply Connections Index Cable Attachment Cable Color Number (from the Line Module)

  • Page 89: Replacing The Power Supply

    Servicing the HP 83447A Replacement Procedures Replacing the power supply Figure 4-7. Wiring diagram for the power supply terminals. Table 4-9. DC Power Supply Terminal Connections Index Cable Number Attachment Cable Color...
  • Page 90 Servicing the HP 83447A Replacement Procedures Replacing the photodetector assembly C A U T I O N C A U T I O N...

  • Page 91: Replaceable Parts

    Replaceable parts What you'll nd in this section This section contains information for: identifying and ordering replacement assemblies mechanical parts for the lightwave receiver Replaceable parts table format Part ordering information...
  • Page 92 Servicing the HP 83447A Replaceable parts Direct mail-order system Direct phone-order system Regular orders Hotline orders...
  • Page 93 Servicing the HP 83447A Replaceable parts Figure 4-8. HP 83447A assembly level replaceable parts.
  • Page 94 Servicing the HP 83447A Replaceable parts Table 4-10. Assembly-Level Replaceable Parts Index HP Part Description Number Number...
  • Page 95 Servicing the HP 83447A Replaceable parts Figure 4-9. HP 83447A replaceable hardware.
  • Page 96 Servicing the HP 83447A Replaceable parts Table 4-11. Replaceable Hardware Index HP Part Description Number Number...
  • Page 97 Index...
  • Page 98 4-39 assistance, vii avalanche photodetector diode (APD), 4-7 bias adjustment, detector, 4-20 cabinet, cleaning, 2-2 certi cation, vii characteristics for the HP 83447A, 1-8{10 checking the fuse, 2-5 cleaning adapters, 2-22 cabinet, 2-2 non-lensed connectors, 2-21 cleaning ber-optic connections, 2-19, 2-21...
  • Page 99 HP 83447A lightwave receiver, 1-3 detector bias adjustment, 4-20 digital communications analyzer, connecting to, 2-10 direct order system, 4-38 electrostatic discharge (ESD), 1-12 protection, 4-4 reducing damage, 1-14 static-safe work station, 1-13 EMI compatibility, 1-9 eye diagram measuring from recovered trigger signal, 3-3...
  • Page 100 lightwave receiver, 1-3 line frequency, 2-6 line fuse, 2-5 line module, 4-33 line voltage range, 2-4 selector, 2-4 low voltage servicing, 4-8 opening the fuse holder door, 2-4 optical coupler assembly, 4-7 optical in connector, 1-6 optical out connector, 1-6 overvoltage servicing, 4-8 packaging, 2-14 part ordering information, 4-37...
  • Page 101 4-8 options, 2-13 power supply replacement, 4-35 tools, 4-4 troubleshooting, 4-8 shipping preparation, 2-15 SONET/SDH, 1-3 speci cations for the HP 83447A, 1-8{10 static-safe accessories, 1-14 temperature range, 1-9 testing responsivity, 2-12 through-path optical insertion loss, 4-13 torque requirements, 4-32...
  • Page 102 warranty, 2-13 warranty information, viii waveform test measuring eye diagram, 3-3...

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