Agilent 71501D - Manual

Agilent 71501D

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Table of Contents:

  • Page 3 – General Safety Considerations; W A R N I N G
  • Page 4 – input; C A U T I O N
  • Page 5 – Contents; Getting Started; Steps for Setting Up Eye-Diagram Analysis 1-4; Application Tutorials
  • Page 6 – Specifications and Characteristics
  • Page 7 – Getting Started
  • Page 8 – Getting Started with the Eye-Diagram Analyzer; In this chapter, you will find information on the following topics:
  • Page 9 – The custom keypad
  • Page 10 – Steps for Setting Up Eye-Diagram Analysis
  • Page 11 – N o t e; Select from eye, eyeline, and pattern modes; Features Available in Each Mode; Eye Mode
  • Page 13 – Eyeline Mode
  • Page 14 – Pattern Mode; Mask/limit lines provide pass/fail testing
  • Page 15 – Apply software filters in eyeline mode; User Correction Files; File Name
  • Page 16 – Three sweep selections are available; Moving the measurement plane
  • Page 17 – Autoranging
  • Page 18 – Step 1. Connect the Equipment
  • Page 19 – connectors on the rear; Rear-Panel Cable Connections; RF INPUT 1
  • Page 20 – If the attenuator connected to the 70820A’s; Front-Panel Cable Connections; dB attenuator
  • Page 22 – Step 2. Load the Personality
  • Page 23 – If the Program Failed to Load; MENU; States
  • Page 24 – If the screen does not resemble the above figure, press:; DISPLAY; msi; The list of files should now be displayed.
  • Page 25 – guided screen is displayed. Perform the following steps:; Example of a Configuration Previously Done
  • Page 26 – First Self-Guided Screen
  • Page 27 – “If you have not already
  • Page 28 – Step 4. Set Up the Measurement Conditions; Select the Mode; CONT STOP STOP to stop the sweeps.
  • Page 29 – CLOCK OUT
  • Page 30 – “To Manually Set the Trigger; NEXT INSTR; An Example 70841A/B’s Status Screen; Use the front-panel knob to scroll the box to the column where the
  • Page 31 – ADJUST ROW; USER; LEVEL
  • Page 32 – Turn the display off and select trace one by pressing:; Optional Step. Save Instrument State as Preset State; Traces
  • Page 33 – Restore the factory instrument preset by pressing:
  • Page 35 – Application Tutorials
  • Page 36 – Configure the Data Signal
  • Page 37 – • Data Hi-Lvl 300 mV
  • Page 38 – View the Signal; INSTR PRESET
  • Page 39 – Example of a Large Overshoot Resulting from Laser Bias; Perform an Offset Calibration
  • Page 40 – Perform the eye measurement by pressing:; Example Eye Measurements; Measure Extinction Ratio
  • Page 41 – Example Extinction Ratio Measurement; Change the amount of data used for the histograms by pressing:
  • Page 42 – Tutorial 2: Measure in Optical Power Units; Set the analyzer to a known state by pressing:
  • Page 44 – Tutorial 3: Measure Extinction Ratios on Low-Level Signals; Change to Eyeline Mode
  • Page 45 – Autoscaled Display of Low-Level Signal; Turn filtering on by pressing:
  • Page 46 – Measure the Extinction Ratio
  • Page 47 – Turn on the markers
  • Page 48 – Laser Overshoot and Turn-On Delay
  • Page 49 – Tutorial 5: Use Software Filters; electrical converter and cables.; Supplied User-Correction Files
  • Page 50 – User-Corrections Applied to the Data
  • Page 51 – Eyeline Display Showing Laser Overshoot; Load the Software Filter
  • Page 52 – Turn the autoscale function on by pressing:; Example Filtered Laser Overshoot
  • Page 53 – Tutorial 6: Test to Industry Standards; Select the Mask
  • Page 54 – Turn Mask Testing On
  • Page 55 – Stop on and Display Trace Errors
  • Page 56 – ON
  • Page 57 – Tutorial 7: Default and Custom Mask or Limit Line Testing; Example of a User-Created Mask
  • Page 59 – Add a Mask Margin
  • Page 60 – Display the Error Trace; Remove all Displayed Masks
  • Page 61 – Tutorial 8: Display the Data Pattern; Select Pattern Mode; TRIGGER OUT
  • Page 62 – Example Pattern Mode Display; Add Time Delay
  • Page 63 – Set channel 2 by pressing:; Example Display of User-Error in Pattern Mode
  • Page 64 – Construct the Filter; Config; bit rate
  • Page 65 – Turn the display off by pressing:
  • Page 66 – RETURN
  • Page 67 – Set the marker on 1.86224 GHz using the knob or numeric keypad.
  • Page 68 – Continue by pressing:
  • Page 69 – To store the filter to a memory card, press:
  • Page 70 – Tutorial 10: Create a Vertical Histogram; Select the Histogram Type
  • Page 71 – prev menu
  • Page 72 – Perform Statistical Analysis
  • Page 73 – To display a line indicating the location of the mean, press:
  • Page 74 – STD DEV
  • Page 75 – Tutorial 11: Create a Horizontal Histogram
  • Page 81 – Eye-Diagram Analyzer Reference
  • Page 83 – Performing Eye-Diagram Measurements; Automatic Measurements
  • Page 84 – Use the NUMBER SAMPLES softkey for this purpose.; Measurement Definitions; Extinction Ratio
  • Page 85 – Crossing Level; Measure Fast Amplitude and Phase Transitions
  • Page 86 – For Optimum Performance
  • Page 87 – Generating Histograms; Histogram analysis is performed using the Histogram menu.; Analyze; The Histogram Menu
  • Page 88 – SINGLE ACQUIRE
  • Page 89 – Masks and Limit Lines; Two Masks Displayed on Screen
  • Page 90 – A Limit Line Displayed on Screen
  • Page 91 – Testing Responses
  • Page 92 – Eye-Diagram Menu Maps; Setup and Trg, Cal Menus
  • Page 94 – These menus provide additional fea-; Page 1 of Top Level Menus
  • Page 95 – The Left-Side Softkeys; Page 2 of Top Level Menus
  • Page 96 – Controlling the Display; Set the number of bits displayed by pressing:
  • Page 98 – “Tutorial 5: Use Software Filters” on page 2-15; Setup; User-Correction Files
  • Page 99 – Load the file by pressing:
  • Page 100 – Press; Chapter 1, “Getting Started”
  • Page 102 – set clock; Misc
  • Page 103 – Calibrating the Eye-Diagram Analyzer; refer to
  • Page 104 – Connect a low-loss cable between the front-panel; Calib
  • Page 105 – Displaying Traces; Four Traces can be Displayed; To Display a Trace
  • Page 106 – REF LEV|POS softkey to enter both the reference position and
  • Page 107 – The Averaging Submenu; Average trace 1 by pressing:
  • Page 108 – The Persistence Submenu; Infinite Monochrome Persistence
  • Page 109 – ING
  • Page 110 – Using Markers
  • Page 111 – Applying Mask Testing; Chapter 2, “Application
  • Page 112 – Automatic Alignment Scales the Mask
  • Page 113 – The Mask Setup Submenu
  • Page 114 – Saving to Mass Storage; matting Memory” on page 3-34; Selecting and Formatting Memory; Memory Cards
  • Page 115 – “To Change a; RAM Disks
  • Page 116 – GPIB Disk Drives; Mass Storage
  • Page 117 – Initializing (formatting) a memory card; INITIALIZE
  • Page 118 – Enter the disk drive’s unit number by pressing:
  • Page 119 – Install the memory card into the 70004A display.
  • Page 120 – Working with Files; File Prefixes; File Type
  • Page 121 – Refer to
  • Page 122 – “Selecting and Formatting Memory” on page 3-34
  • Page 123 – Entering a File Name without a Keyboard; To Recall a File; To Erase a File
  • Page 124 – To Erase all Files; all; Entering the prefix without a keyboard
  • Page 126 – “Selecting and
  • Page 127 – Creating Copies of the Display; The printer must have an GPIB interface.; To Create a Print; Connect the printer to the display via an GPIB cable.; Hard Copy
  • Page 128 – copy options
  • Page 129 – “Viewing User-Correction
  • Page 130 – Example User-Corrections
  • Page 131 – Default Data; Display the User Correction menu by pressing:
  • Page 132 – CONFIRM DEL ALL; Entering and Editing User-Corrections; “Viewing User-Correction Data” on page 3-56
  • Page 133 – next FREQ
  • Page 134 – Enter a line of data by pressing:
  • Page 135 – other
  • Page 136 – Copy user correction to an alternate channel by pressing:; If channel 2 data is selected, the softkey reads; Viewing User-Correction Data; Set the Frequency Scale for Frequency Sweeps; equals the desired stop frequency in hertz.
  • Page 137 – Use the front-panel knob to scroll the menu bar to
  • Page 138 – Scale
  • Page 140 – If the mass-storage device needs to be selected, refer to
  • Page 141 – Use the Calibration menu to perform the following tasks:; The Calibration Menu
  • Page 142 – Turning Off RF Correction; Turn off RF correction by pressing:
  • Page 143 – Matching Delay Between Channels; The following figure shows added delay on channel 2.
  • Page 144 – Trace 2 Delay Compensated; Automatically compensate channel 2 by pressing:; Calibrating the IF; • The temperature has changed ±5
  • Page 145 – The calibration routine takes about 30 minutes to complete.; To view when channel 1 was last calibrated, press:
  • Page 146 – Viewing the Calibration Data; Display the Traces menu by pressing:; Display the IF correction data for each channel by pressing:
  • Page 147 – Display the traces menu by pressing:; Display the 100 kHz filter response of stage 0 by pressing:
  • Page 148 – To display the various hardware responses, press:; OFF
  • Page 149 – CH1 CAL INFO; Performing a Self-Test; Controlling the Calibrator Signal; Shape; square wave; Frequency; positions
  • Page 150 – To turn the calibrator signal on, press:
  • Page 151 – Programming Commands
  • Page 152 – This chapter documents programming the eye-diagram analyzer.
  • Page 153 – Introduction; Use Variables to Pass Commands and Data
  • Page 154 – ALIGN; The ALIGN command string automatically aligns a mask to the eye.; Example
  • Page 155 – BIT; CLEAR; Values of Program Variables
  • Page 156 – DEFAULT
  • Page 157 – DELAY; DIAGRAM; displays a continuous line which shows the actual data value for
  • Page 158 – EXTIN
  • Page 159 – MARGIN; MARMSK; The MARMSK command string turns on or off margin mask testing.
  • Page 160 – MEAS
  • Page 161 – PERSIST; • INF turns on infinite persistence mode.
  • Page 162 – QUIT
  • Page 163 – Specifications and Characteristics
  • Page 164 – characteristics
  • Page 165 – Vertical Specifications
  • Page 166 – Input Channel Specifications; Input channels RF INPUT 1 and RF INPUT 2 are dc coupled.
  • Page 167 – Trigger Specifications
  • Page 169 – Horizontal Specifications; These specifications are for the eye diagram analyzer only.
  • Page 170 – Declaration of Conformity
  • Page 171 – Index; Numerics
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Agilent 71501D

Eye-Diagram Analysis
User’s Guide

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Summary

Page 3 - General Safety Considerations; W A R N I N G

iii General Safety Considerations General Safety Considerations This product has been designed and tested in accordance with the standards listed on the Manufacturer’s Declaration of Conformity, and has been supplied in a safe condition. The documentation contains information and warnings that must ...

Page 4 - input; C A U T I O N

iv General Safety Considerations C A U T I O N Fiber-optic connectors are easily damaged when connected to dirty or damaged cables and accessories. The Agilent 71501D’s front-panel input connector is no exception. When you use improper cleaning and handling techniques, you risk expensive instrument ...

Page 5 - Contents; Getting Started; Steps for Setting Up Eye-Diagram Analysis 1-4; Application Tutorials

Contents-1 Contents 1 Getting Started Steps for Setting Up Eye-Diagram Analysis 1-4 2 Application Tutorials Tutorial 1: Measure Eye-Parameters 2-4Tutorial 2: Measure in Optical Power Units 2-8Tutorial 3: Measure Extinction Ratios on Low-Level Signals 2-10Tutorial 4: Measure Laser Turn-on Delay 2-13T...

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