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Glossary

Multimode Cable

A thick cored optical

fi

ber (compared to single mode cable) that can propagate

light of multiple modes.

OMA (Optical Modulation Amplitude)

The difference between the average power levels of the logic 1 level, High,
and the logic 0 level, Low, of the optical pulse signal. The levels are the
Means of the logical levels sampled within an Aperture of the logical 1 and
0 regions of the pulse. The logical 1 and 0 time intervals are marked by
the crossings of a reference level determined as the Average Optical Power
(AOP) of the signal.

Protocol

Formal conventions that govern the format and control of signals in a
communication process.

Recovered Clock

A clock signal derived from and synchronous with a received data sequence.

Setting

The state of the front panel and system at a given time.

Single-Mode Cable

An optical cable with a very small core diameter (usually in the range of
2-10 microns). Such cables are normally used only with laser sources due to
their very small acceptance cone. Since the cone diameter approaches the
wavelength of the source, only a single mode is propagated.

Trigger

An electrical event that initiates acquisition of a waveform as speci

fi

ed by

the time base.

Waveform

The visible representation of an input signal or combination of signals.

28

80C12B Optical Sampling Module User Manual

Summary of Contents for 80C12B Series

Page 1: ...xx 80C12B Optical Sampling Module ZZZ User Manual P071299400 071 2994 00...

Page 2: ......

Page 3: ...80C12B Optical Sampling Module ZZZ User Manual xx www tektronix com 071 2994 00...

Page 4: ...and pending Information in this publication supersedes that in all previously published material Specifications and price change privileges reserved TEKTRONIX and TEK are registered trademarks of Tek...

Page 5: ...es taxes and any other charges for products returned to any other locations This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintenance a...

Page 6: ......

Page 7: ...d Accessories 3 Installation 6 Operating Basics 9 Usage 9 System Interaction 10 Front Panel Controls 11 Commands from the Main Instrument Front Panel 12 Programmer Interface Commands 14 User Adjustmen...

Page 8: ...Figures Figure 1 Module compartments 7 Figure 2 Connecting optical cables correctly 9 Figure 3 80C12B optical module front panel 11 Figure 4 Vertical Setup dialog boxes DSA8300 13 ii 80C12B Optical Sa...

Page 9: ...1 80C12B module features 2 Table 2 Standard accessories 3 Table 3 Available 80C12B filter options 3 Table 4 Available 80C12B calibration and warranty options 4 Table 5 Optional accessories 5 80C12B O...

Page 10: ...hazard observe all ratings and markings on the product Consult the product manual for further ratings information before making connections to the product The inputs are not rated for connection to ma...

Page 11: ...could result in damage to this product or other property Symbols and Terms on the Product These terms may appear on the product DANGER indicates an injury hazard immediately accessible as you read th...

Page 12: ...e environment and to reduce the use of natural resources we encourage you to recycle this product in an appropriate system that will ensure that most of the materials are reused or recycled appropriat...

Page 13: ...rument has been operating continuously for 20 minutes within the operating temperature range specified Vertical compensation has been performed with the module installed in the same compartment used w...

Page 14: ...n and usage of the sampling module and its features For information about the main instrument in which the sampling module is installed refer to the user documents and online help provided with your m...

Page 15: ...ater Select Help About from the TekScope application Help menu to show your current version Microsoft Windows 7 Ultimate 32 bit operating system DSA8200 CSA8200 CSA8000B CSA8000 TDS8200 TDS8000B and T...

Page 16: ...wer 850 nm 2 mW average power 1310 nm 1550 nm 10 mW peak power for 60 ms Internal fiber diameter 62 5 m 125 m multimode fiber 3 Optical return loss 14 dB for multimode fiber 24 dB for single mode fibe...

Page 17: ...andards There are three module configurations available Option 10G provides Optical Reference Receiver ORR filters for all standard rates between 8 5 and 11 7 Gb s Options F0 F12 provide 4 tributary f...

Page 18: ...s 40GBASE R4 10 31 Gb s 100GBASE R10 10 31 Gb s 10GFC 10 51 Gb s FEC10 66 10 66 Gb s FEC10 71 10 71 Gb s FEC11 10 11 1 Gb s FC11317 11 3 Gb s Unfiltered 12 GHz bandwidth 80C12B 10G The 80C12B 10G mod...

Page 19: ...4546 XX DIAMOND 2 5 UCI adapter 119 4556 XX SMA UCI adapter 119 4557 XX DIAMOND 3 5 UCI adapter 119 4558 XX ST PC UCI adapter 119 4513 XX 3 5 male to 3 5 female SMA 015 0552 XX Slip on SMA connector...

Page 20: ...ving or handling an optical module or making connections Discharge to ground any electrostatic charge on cables before attaching the cable to the optical module Correct Module Handling Guidelines CAUT...

Page 21: ...e installed in an instrument to acquire signals NOTE Installing a large module in either large compartment disables some of the small compartment channels Refer to the instrument Online Help for infor...

Page 22: ...erwise they are lost when powering off the instrument Removing a Module 1 Power off the instrument using the front panel On Standby power switch 2 Plug the grounding strap into the instrument ground c...

Page 23: ...interface series adapters to couple alternate cable types to the optical module Refer to the Tektronix Web site for details To connect the fiber optic cable to the module optical input 1 Line up the...

Page 24: ...modules can have dynamic ranges exceeded without obvious visual indication on the waveform because the overloaded signal output of the photodetector may still be within the dynamic range of the intern...

Page 25: ...e instrument activates turns on the channel If you push the button and the channel is active as a channel waveform then the instrument selects the channel waveform If the channel waveform is already s...

Page 26: ...outputs Hold Down Screws Hold down screws attach the module to the main instrument Once the hold down screws are loosened use the module slot eject levers to remove the module from a powered down mai...

Page 27: ...main instrument Figure 4 Vertical Setup dialog boxes DSA8300 NOTE The user interface UI images in this manual are from the DSA8300 instrument The DSA8200 UI although different in appearance has a sim...

Page 28: ...ic measurements you take This procedure uses internal routines to optimize the vertical offset gain and linearity Overview To perform optical compensations Control elements and resources Prerequisites...

Page 29: ...s for the main instrument and for all sampling modules listed in the Compensation dialog box when compensation completes Compensation fail actions 12 If Fail appears as the Status rerun the compensati...

Page 30: ...Access the dark level compensation 3 Click Setup Vertical Run the dark level compensation 4 Click the Dark Level button under Compensation Follow the on screen instructions 5 Repeat steps 2 through 4...

Page 31: ...to precisely measure and record the custom optical signal power Then connect the signal to the module using the same fiber cables 6 In the Vert Setup dialog box click the User Wavelength Gain button u...

Page 32: ...ION To prevent damage avoid the use of chemical cleaning agents which might damage the plastics in this instrument Use a 75 isopropyl alcohol solution as a cleaner and wipe with deionized water Use on...

Page 33: ...sette cleaner such as FI 6270 a FIS tape dispenser cleaner such as FI 7111 an Optipop pipe cleaner such as F1 6364 Cleaning kits for optical connectors such as the Tektronix Optical Connector Cleaner...

Page 34: ...fiber input for a short distance a centimeter or two 5 Place the UCI adapter back on the cleaned fiber end face Dust cap 6 When the module does not have a fiber cable attached to its input s attach t...

Page 35: ...286A Clock Recovery module to obtain a clock recovery signal Refer to the CR175A or CR286A module user documentation for triggering information When connecting cables to the BUFFERED outputs make sure...

Page 36: ...odule outputs a voltage the amplitude of which is linearly dependent on the incoming optical power in this condition the voltage applied at the electrical sampler already represents optical power in i...

Page 37: ...and optical bandwidth 3 dB 10 log vertical swing at frequency vertical swing at DC Bandwidth for Reference Receiver Settings The curve calculation of frequency response for reference receiver settings...

Page 38: ...Reference 24 80C12B Optical Sampling Module User Manual...

Page 39: ...he power out is one half the power out at a frequency near DC The range of frequencies handled by a device or system Bandwidth is a measure of network capacity Analog bandwidth is measured in cycles p...

Page 40: ...bels is where Vi is the voltage of the incident pulse Vl is the voltage reflected back by the load Po is the power out and Pi is the power in See page 21 Electrical versus Optical Bandwidth dBm A loga...

Page 41: ...over high purity filaments of glass The bandwidth of fiber optic cable is much greater than that of copper wire Impedance The opposition to an AC signal in the wire Impedance is very much like resista...

Page 42: ...l conventions that govern the format and control of signals in a communication process Recovered Clock A clock signal derived from and synchronous with a received data sequence Setting The state of th...

Page 43: ...ischarge cautions 6 Extinction ratio 27 F Features 1 FEC 27 Fiber optics 27 Filter selection 21 Forward Error Correction 27 Front panel controls 11 G Getting started 1 H handling guidelines module 6 H...

Page 44: ...le 28 SMA connector torque 21 Specifications vii Standard accessories 3 System interaction 10 T Torque BUFFERED connectors 21 Trigger 28 U Usage 9 User adjustments 14 User wavelength compensation how...

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