Tektronix OI2125 Instruction Manual
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Tektronix OI2125 Instruction Manual

Tektronix OI2125 Instruction Manual

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Instruction Manual
OI2125 O/E Receiver
071-1053-00
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. Refer to all safety summaries prior to
performing service.
www.tektronix.com

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  • Page 1 Instruction Manual OI2125 O/E Receiver 071-1053-00 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. Refer to all safety summaries prior to performing service.
  • Page 2 Copyright © Tektronix, Inc. All rights reserved. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes that in all previously published material. Specifications and price change privileges reserved. Tektronix, Inc., P.O. Box 500, Beaverton, OR 97077...
  • Page 3 Tektronix, shipping charges prepaid, and with a copy of customer proof of purchase. Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located.

  • Page 5: Table Of Contents

    ........OI2125 O/E Receiver Test Record .
  • Page 6 Figure 10: Rear Remote Interface connector pinout ....Figure 11: OI2125 Output Voltage versus Input Optical Power ..Figure 12: O/E Receiver interconnect diagram .
  • Page 7 ....... Table 14: OI2125 Receiver PV checks ......
  • Page 8 Table of Contents OI2125 O/E Receiver Instruction Manual...

  • Page 9: General Safety Summary

    Do Not Operate in Wet/Damp Conditions. Do Not Operate in an Explosive Atmosphere. Keep Product Surfaces Clean and Dry. Provide Proper Ventilation. Refer to the manual’s installation instructions for details on installing the product so it has proper ventilation. OI2125 O/E Receiver Instruction Manual...
  • Page 10 CAUTION indicates a hazard to property including the product. Symbols on the Product. The following symbols may appear on the product: Avoid Exposure- Laser Radiation CAUTION Protective Ground Refer to Manual (Earth) Terminal is Emitted from this Aperture OI2125 O/E Receiver Instruction Manual...
  • Page 11 Preface This is the instruction manual for the OI2125 O/E Receiver. This manual provides user information and performance verification procedures for the instrument. This manual also provides specifications and performance verification proce- dures for the optional Clock Recovery Modules. OI2125 O/E Receiver Instruction Manual...

  • Page 12: Contacting Tektronix

    6:00 a.m. – 5:00 p.m. Pacific time This phone number is toll free in North America. After office hours, please leave a voice mail message. Outside North America, contact a Tektronix sales office or distributor; see the Tektronix web site for a list of offices. viii...

  • Page 13: Getting Started

    BER test, the BERT Pattern Generator supplies a data signal that is converted to a modulated optical signal by an OI1125 E/O Transmitter. The OI2125 O/E Receiver is used to convert the optical BER test pattern back to an electrical signal for analysis by the BERT Error Analyzer.

  • Page 14: Options

    Correction (10.66423 Gb/s). Options The AC power input to the OI2125 O/E Receiver is supplied through a standard IEC320 AC input connector. The internal power supply in the receiver operates with AC power from 100 to 240 VAC at either 50 or 60 Hz. The standard power cord supplied with the OI2125 O/E Receiver is a 120 VAC North American power cord.

  • Page 15: Standard Accessories

    Tektronix Service Options are available at the time you order your instrument. Contact your local Tektronix Sales Office for more information. Standard Accessories Table 3 lists the standard accessories that come with the OI2125 O/E Receiver. Table 3: Receiver standard accessories Accessory...

  • Page 16: Optional Accessories

    015-1022-01 (2 ea) Certificate of Calibration –––––––– Instructions 071-1055-XX Optional Accessories Table 5 lists the optional accessories that are recommended for the OI2125 O/E Receiver. Table 5: Optional accessories Item Part number SMA 2.5 UCI adapter 119-4517-00 DIAMOND 2.5 UCI adapter...

  • Page 17: Installation

    Leave at least 5.1 cm (2 inches) free on each side. 3. Check that you have the proper electrical connections. The OI2125 O/E "10%, 47 Hz to 63 Hz, and 40 W.

  • Page 18: Functional Check

    Getting Started Functional Check To perform a functional check of the OI2125 O/E Receiver, you must connect a setup as shown in Figure 2. This setup creates an optical data source by combining a pattern generator with an electrical-to-optical transmitter (with an internal laser source).

  • Page 19: Figure 3: Oscilloscope Display Of An Eye Pattern

    The oscilloscope displays an eye pattern as shown in Figure 3. This indicates that the receiver is functioning correctly—it is converting the modulated input optical signal to an electrical eye pattern that represents the data stream from the BERT. Figure 3: Oscilloscope display of an eye pattern OI2125 O/E Receiver Instruction Manual...
  • Page 20 Getting Started OI2125 O/E Receiver Instruction Manual...

  • Page 21: Operating Basics

    Operating Basics This section describes the connectors and controls on the front and rear panels of the OI2125 O/E Receiver. Figures 5 and 9 illustrate the front and rear panels of the instrument. Handling Handle the OI2125 O/E Receiver carefully at all times. The instrument contains sensitive optical and electrical components that can be damaged by physical shocks.
  • Page 22 3. Carefully align the keyway on the receptacle with the key on the connector. 4. Tighten the nut lightly with finger pressure only. If you overtighten an optical connector, you may get inconsistent optical signal performance. OI2125 O/E Receiver Instruction Manual...

  • Page 23: Figure 4: Connecting A Fiber Optic Cable

    Operating Basics Keyway Tighten FC/PC Receptacle Ë FC/PC connector Fiber optic cable with FC/PC connector Figure 4: Connecting a fiber optic cable OI2125 O/E Receiver Instruction Manual...

  • Page 24: Front Panel Description

    Module switch Figure 5: OI2125 front panel O/E Receiver The O/E receiver section is described here. OPTICAL INPUT. The optical input port is designed to accept modulated optical signals over a range of digital data rates and optical wavelengths. The port has a single-mode fiber, universal optical input connector.
  • Page 25 A connector at the rear of the slot provides power and a control interface for the modules. A slot cover module is a standard accessory for the receiver that should remain installed in the receiver until a clock module is needed, to limit RF noise and stray EMI emissions. OI2125 O/E Receiver Instruction Manual...

  • Page 26: Clock Recovery Modules

    The Clock Recovery Module features are described as follows: Module Features DATA IN. This SMA connector accepts electrical input from either the OI2125 O/E Receiver Attenuated Data Out port or from an external signal source. Use the short SMA cable included with the module to connect to the receiver Attenuated Data Out connector.
  • Page 27 Data Rate Indicators. LEDs located to the left of the Data Rate Select switch indicate which data rate is selected. Hold-Down Screw. The hold-down screw locks the module into place once the module is seated. OI2125 O/E Receiver Instruction Manual...

  • Page 28: Figure 7: Installing A Clock Recovery Module

    Operating Basics Installing a Clock The OI2125 O/E Receiver will operate without a clock recovery module. Recovery Module However, if you do not need clock recovery in your application, you should install the slot cover module in the receiver to limit stray EMI emissions and to protect the receiver from ambient RF noise.

  • Page 29: Figure 8: Releasing The Module With The Latch

    EMI emissions and to protect the receiver from ambient RF noise. Releasing the latch Hold-down Ë screw Removing the CR module Remove module Latch Ë Ë Figure 8: Releasing the module with the latch OI2125 O/E Receiver Instruction Manual...

  • Page 30: Rear Panel Connections And Controls

    Operating Basics Rear Panel Connections and Controls There are two connectors on the rear panel of the OI2125: Remote Interface and AC Power In. Use Figure 9 and the following descriptions to connect the transmitter to your system. Figure 9: OI1125 rear panel Remote Interface The remote interface allows for remote control of the instrument.

  • Page 31: Using The Rear-Panel Remote Interface

    Mod ID2 Clk_Rate2 Figure 10: Rear Remote Interface connector pinout Table 6 lists the signal descriptions for the Remote Interface connector. Unless otherwise noted, the signals are active in both local and remote operating modes. OI2125 O/E Receiver Instruction Manual...

  • Page 32: Table 6: Remote Port Signals

    Table 7 shows the data rate select inputs and status outputs for the OM1420 module. Table 7: OM1420 Module data rate select and status logic Data Rate Rate_Sel2 Rate_Sel1 Clk_Rate2 Clk_Rate1 Data rate select (digital inputs) Data rate status (digital outputs) OC-192 OC-192 FEC OI2125 O/E Receiver Instruction Manual...

  • Page 33: Table 8: Clock Recovery Module Type Select Logic

    Table 8 shows the four-bit identification codes on the Mod_ID outputs, used to identify what type of clock recovery module is in the receiver. Table 8: Clock recovery module type select logic Data Rate Mod ID1 Mod ID2 Mod ID3 Mod ID4 OC-192/OC-192 FEC (OM 1420) OI2125 O/E Receiver Instruction Manual...
  • Page 34 Operating Basics OI2125 O/E Receiver Instruction Manual...

  • Page 35: Specifications

    Specifications This section contains the specifications of the OI2125 O/E Receiver. All specifications are guaranteed unless noted as “typical”. Typical specifications are provided for your convenience but are not guaranteed. Specifications marked with the n symbol have corresponding checks in the Performance Verification section on page 35.

  • Page 36: Table 10: Om1420 Clock Recovery Module Specifications

    Specifications Table 9: OI2125 Receiver specifications (Cont.) Specification Description Each pin on the DB25 connector is protected with a 100 W series resistor followed by Remote Port ESD Protection protection diodes tied to ground and +5 V Power Supply 100 V to 240 V "10%, 50 to 60 Hz, t40 W; CAT II...

  • Page 37: Figure 11: Oi2125 Output Voltage Versus Input Optical Power

    Specifications Voltage vs. Optical Power –5 –10 –15 –20 Optical Power (dBm) OC12 OC48 OC192 12.5Gb/s Figure 11: OI2125 Output Voltage versus Input Optical Power OI2125 O/E Receiver Instruction Manual...

  • Page 38: Table 11: Environmental Characteristics

    Specification Description (–55 _C to +75 _C) Temperature, nonoperating The environmental exposure is the procedure stated in Tektronix Design Standard 062-2847-00 for Class 6 equipment. 0 _C to +40 _C (32 to 104 _F) Temperature, operating This procedure conforms to the temperature portion of the test in MIL-T-28800E for Type III, Class 6 equipment, using the limits above.

  • Page 39: Table 12: Certifications And Compliances

    Compliance was demonstrated to the following specification as listed in the Official Journal of the Low Voltage European Communities: Low Voltage Directive 73/23/EEC, amended by 93/68/EEC EN 61010-1/A2:1995 Safety requirements for electrical equipment for measurement control and laboratory use. OI2125 O/E Receiver Instruction Manual...
  • Page 40 Specifications OI2125 O/E Receiver Instruction Manual...
  • Page 41 WARNING The following servicing instructions are for use only by qualified personnel. To avoid injury, do not perform any servicing other than that stated in the operating instructions unless you are qualified to do so. Refer to all safety summaries before performing any service.

  • Page 43: Theory Of Operation

    Data Out 6 dB On/Off Switch attenuator Module AC Line In Front Panel Clock Recovery Module Electrical Remote Interface Data In Clock Recovery Retimed Data Out Rear Panel Clock Out Figure 12: O/E Receiver interconnect diagram OI2125 O/E Receiver Instruction Manual...

  • Page 44: O/E Receiver

    OI2125 O/E Receiver. The output from the other SMA connector (Data Out) can be used to monitor the quality of the converted electrical data.

  • Page 45: Clock Recovery Modules

    The two data rates selectable with the OM1420 are OC-192 (9.953280 Gb/s) and OC-192 FEC (10.66423 Gb/s). The output amplifier of the clock recovery module provides a large output voltage signal. OI2125 O/E Receiver Instruction Manual...
  • Page 46 Theory of Operation OI2125 O/E Receiver Instruction Manual...

  • Page 47: Performance Verification

    Performance Verification Use the following procedures to verify the warranted specifications of the OI2125 O/E Receiver. Before starting these procedures, photocopy the test record beginning on page 55 to record the performance test results. The recommended calibration interval is one year.

  • Page 48: Prerequisites

    Burleigh WA-1100 Optical Power Meter 1550 nm, +15 dBm to –40 dBm, 0.01 dBm resolution, Advantest Q8221 with Q82227 ±5% accuracy and Power Head power head Optical Transmitter 1530 nm to 1565 nm Tektronix OI 1125 OI2125 O/E Receiver Instruction Manual...
  • Page 49 Tektronix part number 015-1001-00 5 X, 50 W, SMA Attenuator, electrical Tektronix part number 015-1002-00 Torque wrench 5/16-in, 7-10 in-lb. (8 mm, 79 to 112 N-cm) Pasternack Enterprises PE 5011-1 Only required for Clock Recovery Module tests OI2125 O/E Receiver Instruction Manual...

  • Page 50: Photodetector Optical Input

    Clock Data Optical in Optical out Optical in (FC/PC) (FC/PC) (FC/PC) Optical cable 174-3922-00 Optical cable Optical cable SMA cable 174-4725-00 174-4664-00 015-0561-00 OI2125 Optical in (FC/PC) Figure 13: Setup for the LOS threshold test OI2125 O/E Receiver Instruction Manual...
  • Page 51 Optical Power Meter. Set the optical power meter settings: 1. Set the wavelength to 1550 nm. 2. Set the units of measure to dBm. 3. Set the range to Auto. 4. If necessary, select the channel you will use. OI2125 O/E Receiver Instruction Manual...
  • Page 52 Table 17 of the test record. Record the results in Table 17. 5. Disable the transmitter laser by turning the keyswitch counterclockwise (to the locked position). The Laser On and Output Active LEDs both extinguish. OI2125 O/E Receiver Instruction Manual...

  • Page 53: Data Output

    Trigger direct in Data out Output Optical Optical direct Controller output SMA cable input 015-0561-00 10dB Optical attenuator Optical cable Optical cable 174-3922-00 174-3922-00 50 W coaxial cable Figure 14: Setup for the bandwidth test OI2125 O/E Receiver Instruction Manual...
  • Page 54 NOTE. If the Scale, Position, and Channel Offset control boxes are not displayed in the following step, click the Basic>> button in the lower left part of the Vert Setup dialog box. 6. Select the Vert tab to set the vertical parameters. OI2125 O/E Receiver Instruction Manual...
  • Page 55 1/4 of a horizontal division, the amount of samples that fall on the impulse may be too coarse, resulting in quantum errors in the resulting Fourier transform. OI2125 O/E Receiver Instruction Manual...

  • Page 56: Figure 15: Proper Positioning Of The Impulse

    3. Normalize the Fourier Transform result such that DC or low frequency is 0 dB. 4. Plot the frequency response. 5. Check that the OI2125 O/E Receiver meets the performance requirement bandwidth. Record the result on the test record. OI2125 O/E Receiver Instruction Manual...

  • Page 57: Eye Pattern Test Matrix

    Test Circuit Connect the equipment as shown in Figure 16 on page 46. A torque wrench is recommended for securing the SMA connections to 7 to 10 lb-in (79 to 112 N-cm). OI2125 O/E Receiver Instruction Manual...

  • Page 58: Figure 16: Setup For The Eye Pattern Test Matrix

    4. Set the mark ratio to 1/2. 5. Set the trigger to 1/32 clock. 6. Set the output mode to AC. 7. Turn the data output on and set the data amplitude to 1.0 V p–p OI2125 O/E Receiver Instruction Manual...
  • Page 59 7. Press the Clear Data button, and then the Run/Stop button. The oscilloscope displays an eye pattern similar to Figure 17 on page 49. The oscilloscope setup in the next section sets up the mask parameters. OI2125 O/E Receiver Instruction Manual...
  • Page 60 From the drop-down menus, select NRZ Amplitude→Amplitude. Repeat steps a through e for Meas 2. When doing step e, select NRZ Amplitude→Crossing %. 6. Close the Setup window. Compensate the Oscilloscope. 1. Run a Signal Path Compensation from the Utilities menu. OI2125 O/E Receiver Instruction Manual...

  • Page 61: Figure 17: Measurements Taken From The Eye Pattern

    Figure 17: Measurements taken from the eye pattern 5. Verify that the eye pattern does not violate the mask boundaries. 6. Record the measurement data (see Figure 17) in the first row of Table 18. OI2125 O/E Receiver Instruction Manual...
  • Page 62 This concludes the performance verification for the receiver. If you need to perform the Clock Recovery Module Tests, see page 51. OI2125 O/E Receiver Instruction Manual...

  • Page 63: Clock Recovery Module Tests

    OI2125 Clock/32 Data out 5X attenuator (0.2V test only) Clock out Data in SMA cable Direct 015-0561-00 trigger in SMA cable 2X attenuator SMA cable 015-0561-00 174-1349-00 Figure 18: OM1420 Clock Recovery Module test setup OI2125 O/E Receiver Instruction Manual...
  • Page 64 Check the Use Waveform Database box. e. In the Display box, check Histogram and Linear Mode. 5. Select the Meas tab to set the measurement parameters: a. In the Meas x field, select Meas 1. OI2125 O/E Receiver Instruction Manual...

  • Page 65: Figure 19: Rms Jitter Measurement

    1. Align the rising edge of the waveform with the center of the oscilloscope graticules. 2. Reduce the vertical size of the histogram box as small as possible. Histogram box Use this value Rising edge Measurement window Figure 19: RMS Jitter measurement OI2125 O/E Receiver Instruction Manual...
  • Page 66 11. Select the OC-192 rate on the OM 1420 module. 12. Repeat steps 1 to 4 for the 9.953 Gb/s, 0.15 V row in Table 22. This completes the performance verification for the OM1420 module. OI2125 O/E Receiver Instruction Manual...

  • Page 67: Oi2125 O/E Receiver Test Record

    Performance Verification OI2125 O/E Receiver Test Record Photocopy this form and use it to record the performance test results. Table 17: OI2125 O/E Receiver test record Instrument Serial Number: Certificate Number: Temperature: Relative Humidity %: Date of Calibration: Technician: Performance Test...

  • Page 68: Table 20: Bert Input @12.50000 Gb/S Bit Rate

    Table 20: BERT input @12.50000 Gb/s bit rate Wavelength Optical Input Power Data Output Voltage % Crossing Mask Hit 1530 nm 0 dBm -8 dBm -16 dBm Not measured 1565 nm 0 dBm -8 dBm -16 dBm Not measured OI2125 O/E Receiver Instruction Manual...

  • Page 69: Clock Recovery Module Test Records

    Jitter Generation –––––––– 2 ps rms Table 22. Table 22: OM1420 clock output data BERT Data Rate (Gb/s) Input Voltage, V Jitter, V Clock Output Voltage, V p–p p–p p–p 9.95328 0.15 0.75 10.66423 0.15 0.75 OI2125 O/E Receiver Instruction Manual...
  • Page 70 Performance Verification OI2125 O/E Receiver Instruction Manual...

  • Page 71: Maintenance

    Use only deionized water when cleaning the menu buttons or front-panel buttons. Use a 75% isopropyl alcohol solution as a cleaner and rinse with deionized water. Before using any other type of cleaner, consult your Tektronix Service Center or representative. OI2125 O/E Receiver Instruction Manual...

  • Page 72: Inspection

    Use the following items to clean the optical connectors: H Cleaner tape dispenser (standard accessory included with the transmitter) H Canned compressed gas (Do not use compressed air from an in-house facility, as oil in the system may contaminate the connector.) OI2125 O/E Receiver Instruction Manual...

  • Page 73: Figure 20: Cleaning An Optical Connector

    5. If you cannot use the cleaner tape dispenser, apply a short burst of com- pressed gas to the connector. 6. Carefully attach the connector to the instrument or cable, and check for proper operation. NOTE. Cleaning kits for optical connectors are available from a number of suppliers. OI2125 O/E Receiver Instruction Manual...

  • Page 74: Repackaging Instructions

    H Type and serial number of the instrument H Reason for returning H A complete description of the service required Mark the address of the Tektronix Service Center and the return address on the shipping carton in two prominent locations. OI2125 O/E Receiver Instruction Manual...

  • Page 75: Replaceable Parts

    1SMA–451 –5 119–4516–00 CONNECTOR,OPTO:ADAPTER,FC–PC,ATTEN TK2491 APC–10 0.6DB,RTN LOSS 35DB,RPTB+/–0.2DB,TFS3030 –6 174–3922–00 CA ASSY,FBR OPT:SINGLE MODE,3 METER 0R0U6 8814–3M–SB LONG,FC–PC TO FC–PC –7 006–8217–00 CONN CLEANER:FIS CONNECTOR CLEANER 0CKD9 F1–7111 071–1053–XX MANUAL,TECH:INS,O/E RECEIVER, OI2125 TK2548 071–1053–XX OI2125 O/E Receiver Instruction Manual...
  • Page 76 119–5887–00 ADAPTER,UCI:OPTICAL CONNECTOR,UNIVERSAL TK2491 AD–108, DIN/APC CONNECTOR INTERFACE, ADT–UNI.S8/DIN.2,TOP160 119–5888–00 ADAPTER,UCI:OPTICAL CONNECTOR,UNIVERSAL 80009 119–5880–00 CONNECTOR INTERFACE,ADT–UNI/ST,TOP160 131–7368–00 CONN,FIBER OPT:ATTENUATOR,OAF 80009 131–7368–00 FC–PC,SINGLE MODE,5 DB,2.14 MM OD TVGF13 SIDE BY SIDE INSTRUMENT RACK ADAPTER 80009 TVGF13 OI2125 O/E Receiver Instruction Manual...

  • Page 77: Figure 22: Optional Power Cords

    ORDER BY DESC METER,STR,IEC320,RCPT X 13A,FUSED UK PLUG(13A FUSE),UNI –3 161–0066–11 CA ASSY,PWR:3,1.0MM SQ,250V/10A,2.5 80126 ORDER BY DESC METER,STR,IEC320,RCPT,AUSTRALIA –3 161–0304–00 CA ASSY,PWR:3,1.0MM SQ,250V/10A,2.5 0B445 E13.900.098.A01 METER,STR,IEC320,RCPT,CHINA –4 161–0154–00 CA ASSY,PWR:3,1.0MM SQ,250V/10A,2.5 5F520 86515030 METER,STR,IEC320,RCPT,SWISS OI2125 O/E Receiver Instruction Manual...
  • Page 78 TYNGSBORO, MA 01879 TK2491 TEMPO–CAMARILLO 1340 FLYNN RD CAMARILLO, CA 93012 TK2541 AMERICOR ELECTRONICS LTD UNIT–H ELK GROVE VILLAGE, IL 60007 2682 W COYLE AVE TK2548 XEROX CORPORATION 14181 SW MILLIKAN WAY BEAVERTON, OR 97005 OI2125 O/E Receiver Instruction Manual...

  • Page 79: Glossary

    The maximum usable data rate for a given channel. Chirp Optical frequency chirp is a transient change in optical frequency (wave- length) when a laser or optical modulator is transitioned quickly between zero and one power levels. OI2125 O/E Receiver Instruction Manual...
  • Page 80 WDM, which is a way to increase the capacity of fiber optic transmission systems through multiplexing up to 40 wavelengths of light. Deterministic jitter The difference between the maximum and minimum deviations from the expected timing positions of data after removing the random jitter. OI2125 O/E Receiver Instruction Manual...
  • Page 81 These extra bits and/or coding tend to increase a serial data rate above the original non-FEC data stream in order to accommodate the extra information added by the FEC. OI2125 O/E Receiver Instruction Manual...
  • Page 82 Any unwanted energy that interferes with a signal or measurement. No Return to Zero-When a digital data pattern that has zeroes as lows and ones as highs, does not return to zero when the pattern has consecutive ones. OI2125 O/E Receiver Instruction Manual...
  • Page 83 Return to Zero-When a digital data pattern that has zeroes as lows and ones as highs, returns to zero when the pattern has consecutive ones. An abbreviation for receiver. Short wavelength The spectrum from 800 to 1000 nanometers. OI2125 O/E Receiver Instruction Manual...
  • Page 84 Transmission system Facilities to transfer information from one location to another using copper conductors, fiber, or microwave radio. Tunable Laser A laser that has a variable wavelength and power output level. An abbreviation for transmitter OI2125 O/E Receiver Instruction Manual...

  • Page 85: Index

    Decibel, 68 Maintenance Demodulation, 68 Cleaning Optical Connectors, 60 Deterministic jitter, 68 Inspection and Cleaning, 59 62 DFB laser, 68 Modulation, 70 Digital signal, 69 Multimode, 70 Digital transmission system, 69 Multiplexer, 70 Dispersion, 69 OI2125 O/E Receiver Instruction Manual...
  • Page 86 PRBS, 71 URL, Tektronix, viii Product support, contact information, viii Protocol, 71 Pulse modulation, 71 Ventilation, 5 Random jitter, 71 Rear Panel Connections and Controls, 18 Recovered, clock, 71 Web site address, Tektronix, viii Refraction, 71 OI2125 O/E Receiver Instruction Manual...

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