Agilent Technologies 11898A User Manual

Module extender

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Agilent 11898A

Module Extender

User's Guide

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Summary of Contents for Agilent Technologies 11898A

Page 1 Agilent 11898A Module Extender User’s Guide...
Page 2 ❍ © Copyright material and workmanship for gies shall not be liable for any The OFF symbols Agilent Technologies 2000 a period of one year from date direct, indirect, special, inci- are used to mark the All Rights Reserved. Repro- of shipment.
Page 3: The Agilent 11898A-At A Glance
The Agilent 11898A—At a Glance The Agilent 11898A—At a Glance The Agilent 11898A module extender is an accessory for the Agilent 83480A Digital Communications Analyzer and the Agilent 54750A Digital Oscilloscope mainframes. The module extender makes it possible for plug-in modules to be operated remotely from the mainframe.
Page 4 (in which all means for protection are intact) only. W A R N I N G To prevent electrical shock, disconnect the Agilent 11898A module extender from mains before cleaning. Use a dry cloth or one slightly dampened with water to clean the external case parts. Do not attempt to clean internally.
Page 5 General Safety Considerations C A U T I O N Before switching on this instrument, make sure that the line voltage selector switch is set to the line voltage of the power supply and the correct fuse is installed. Assure the supply voltage is in the specified range. C A U T I O N This product is designed for use in Installation Category II and Pollution Degree 2 per IEC 1010 and 664 respectively.
Page 7: Table Of Contents
Contents The Agilent 11898A—At a Glance iii 1 Using the Agilent 11898A Module Extender Step 1. Inspect the Shipment 1-4 Step 2. Prepare the Module Extender 1-5 Step 3. Install the Module Extender 1-6 Step 4. Perform Calibrations 1-8 Returning the Instrument for Service 1-10...
Page 9: Using The Agilent 11898A Module Extender
Step 1. Inspect the Shipment 1-4 Step 2. Prepare the Module Extender 1-5 Step 3. Install the Module Extender 1-6 Step 4. Perform Calibrations 1-8 Returning the Instrument for Service 1-10 Using the Agilent 11898A Module Extender...
Page 10 Using the Agilent 11898A Module Extender Getting Started Getting Started This chapter shows how to install your Agilent 11898A module extender, and gives information for returning the module for service. Refer to Chapter 2, “Specifications and Regulatory Information” for information on operating con- ditions, such as temperature.
Page 11 The front panel of the module is part of the mainframe section. Throughout this document, “module extender” will be used to refer to the Agilent 11898A module extender, while “plug-in” will be used only to refer to modules used with the extender. The “mainframe section” of the extender is the section of the extender that is installed in the mainframe, and the “bay...
Page 12: Step 1. Inspect The Shipment
Inspect all shipping containers. If your shipment is damaged or incomplete, save the packing materials and notify both the shipping carrier and the nearest Agilent Technologies service office. Agilent Technologies will arrange for repair or replacement of damaged or incomplete shipments without waiting for a settlement from the transporta- tion company.
Page 13: Step 2. Prepare The Module Extender
C A U T I O N When installing or removing the Agilent 11898A module extender, always use the handle provided on the front panel. Do not pull on the flexible cable or the semi-rigid RF cable on the front panel when handling the module.
Page 14: Step 3. Install The Module Extender
Using the Agilent 11898A Module Extender Step 3. Install the Module Extender Step 3. Install the Module Extender You do not need to turn off the mainframe to install or remove the module extender, or to install or remove a plug-in from the module extender.
Page 15 Selecting the trigger input location The Agilent 11898A module extender offers two triggering options: triggering at the mainframe, or triggering at the remote module. • To input the trigger at the mainframe, disconnect both ends of the rigid RF cable from the front panel of the module extender.
Page 16: Step 4. Perform Calibrations
Using the Agilent 11898A Module Extender Step 4. Perform Calibrations Step 4. Perform Calibrations To ensure you obtain the specified accuracy, you must perform a plug-in mod- ule vertical calibration after connecting a plug-in module to the module extender. The calibration must also be performed when you move a plug-in module or the module extender from one slot to another, from one mainframe to another, or when the temperature changes by ≥±5°C.
Page 17 Using the Agilent 11898A Module Extender Step 4. Perform Calibrations 1 To calibrate a voltage probe to the probe tip, connect the probe to the CAL signal, then set the instrument as follows: Electrical Channel Electrical Scale.., Atten units, ratio Units, Volt, Done, ENTER Calibrate.., Calibrate Probe...
Page 18: Returning The Instrument For Service
Technologies Service Offices” on page 3-17 for a list of service offices. Agilent Technologies Instrument Support Center ... (800) 403-0801 If the instrument is still under warranty or is covered by an Agilent Technolo- gies maintenance contract, it will be repaired under the terms of the warranty or contract (the warranty is at the front of this manual).
Page 19 They may also cause instrument damage by generating static electricity. 3 Pack the instrument in the original shipping containers. Original materials are available through any Agilent Technologies office. Or, use the following guidelines: • Wrap the instrument in antistatic plastic to reduce the possibility of damage caused by electrostatic discharge.
Page 20 Using the Agilent 11898A Module Extender Returning the Instrument for Service Sealed Air Corporation (Commerce, California 90001). Air Cap looks like a plastic sheet filled with air bubbles. Use the pink (antistatic) Air Cap™ to reduce static electricity. Wrapping the instrument several times in this ma- terial will protect the instrument and prevent it from moving in the carton.
Page 21 Specifications 2-3 Declaration of Conformity 2-5 Specifications and Regulatory Information...
Page 22 Specifications and Regulatory Information Specifications and Regulatory Information Specifications and Regulatory Information The Agilent 11898A module extender does not have separate electrical, opti- cal, temperature, or humidity specifications. For information on performance specifications and characteristics for plug-in modules used with the extender, refer to the documentation provided with the plug-in module.
Page 23 This loss must be considered when calculating trigger sensitivity. A trigger input is provided at the mainframe end of the Agilent 11898A mod- ule extender module extender. Triggering at the mainframe is recommended for applications requiring the highest sensitivity, and for the enhanced trigger...
Page 24: Specifications And Regulatory Information Specifications
Specifications and Regulatory Information Specifications Table 2-2. Additional Trigger Path Loss Additional Trigger Path Trigger Sensitivity Method of Operation Loss at 2.5 GHz Remote operation with module none 200 mV pk-pk extender (trigger input at mainframe) Remote operation with module approximately 4 dB at approximately 320 mV pk-pk extender...
Page 25: Declaration Of Conformity
Specifications and Regulatory Information Declaration of Conformity Declaration of Conformity...
Page 27: Reference
In Case of Difficulty 3-2 Electrostatic Discharge Information 3-5 Cleaning Connections for Accurate Measurements 3-7 Agilent Technologies Service Offices 3-17 Reference...
Page 28: In Case Of Difficulty
Review the procedure being performed when the problem occurred. Before calling Agilent Technologies or returning the unit for service, a few minutes spent performing some simple checks may save waiting for your instrument to be repaired.
Page 29 To inspect and replace fuses The Agilent 11898A module extender has two fuses inside the mainframe sec- tion of the module extender. The fuses protect the high current power supply lines in the unlikely event of a short circuit in the module or cable.
Page 30 Reference In Case of Difficulty W A R N I N G Replace fuses only with fuses of the same type and rating. Both fuses are 250V, 1 amp, slo-blo.
Page 31: Electrostatic Discharge Information
Reference Electrostatic Discharge Information Electrostatic Discharge Information Electrostatic discharge (ESD) can damage or destroy electronic components. All work on electronic assemblies should be performed at a static-safe work station. The following figure shows an example of a static-safe work station using two types of ESD protection: •...
Page 32 Reference Electrostatic Discharge Information To ensure user safety, the static-safe accessories must provide at least 1 MΩ of isolation from ground. Refer to Table 3-1 for information on ordering static- safe accessories. W A R N I N G These techniques for a static-safe work station should not be used when working on circuitry with a voltage potential greater than 500 volts.
Page 33: Cleaning Connections For Accurate Measurements
Connectors also vary in the polish, curve, and concentricity of the core within the cladding. Mating one style of cable to another requires an adapter. Agilent Technologies offers adapters for most instruments to allow testing with many different cables.
Page 34 Reference Cleaning Connections for Accurate Measurements tions take repeatability uncertainty into account? • Will a connector degrade the return loss too much, or will a fusion splice be re- quired? For example, many DFB lasers cannot operate with reflections from connectors.
Page 35 0.2 µm. This process, plus the keyed axis, allows very precise core-to-core alignments. This connector is found on most Agilent Technologies lightwave instruments.
Page 36 Reference Cleaning Connections for Accurate Measurements The soft core, while allowing precise centering, is also the chief liability of the connector. The soft material is easily damaged. Care must be taken to mini- mize excessive scratching and wear. While minor wear is not a problem if the glass face is not affected, scratches or grit can cause the glass fiber to move out of alignment.
Page 37 Reference Cleaning Connections for Accurate Measurements Use the following guidelines to achieve the best possible performance when making measurements on a fiber-optic system: • Never use metal or sharp objects to clean a connector and never scrape the connector. • Avoid matching gel and oils. Figure 3-4.
Page 38 Reference Cleaning Connections for Accurate Measurements Figure 3-6. Damage from improper cleaning. While these often work well on first insertion, they are great dirt magnets. The oil or gel grabs and holds grit that is then ground into the end of the fiber. Also, some early gels were designed for use with the FC, non-contacting con- nectors, using small glass spheres.
Page 39 Reference Cleaning Connections for Accurate Measurements • Keep connectors covered when not in use. • Use fusion splices on the more permanent critical nodes. Choose the best con- nector possible. Replace connecting cables regularly. Frequently measure the return loss of the connector to check for degradation, and clean every connec- tor, every time.
Page 40 Cleaning Connectors The procedures in this section provide the proper steps for cleaning fiber- optic cables and Agilent Technologies universal adapters. The initial cleaning, using the alcohol as a solvent, gently removes any grit and oil. If a caked-on layer of material is still present, (this can happen if the beryllium-copper sides of the ferrule retainer get scraped and deposited on the end of the fiber during insertion of the cable), a second cleaning should be performed.
Page 41 Reference Cleaning Connections for Accurate Measurements Table 3-3. Dust Caps Provided with Lightwave Instruments Item Agilent Part Number Laser shutter cap 08145-64521 FC/PC dust cap 08154-44102 Biconic dust cap 08154-44105 DIN dust cap 5040-9364 HMS10/dust cap 5040-9361 ST dust cap 5040-9366 To clean a non-lensed connector C A U T I O N...
Page 42 To clean an adapter The fiber-optic input and output connectors on many Agilent Technologies instruments employ a universal adapter such as those shown in the following picture. These adapters allow you to connect the instrument to different types of fiber-optic cables.
Page 43: Agilent Technologies Service Offices
Reference Agilent Technologies Service Offices Agilent Technologies Service Offices Before returning an instrument for service, call the Agilent Technologies Instrument Support Center at (800) 403-0801, visit the Test and Measurement Web Sites by Country page at http://www.tm.agilent.com/tmo/country/English/ index.html, or call one of the numbers listed below.
Page 45 Index Agilent offices, 3-17 fiber optics Attenuation softkey, cleaning connections, attenuation, probe, connectors, covering, 1-11 foam swabs, 3-14 fuse values, cabinet, cleaning, fuses, CAL signal, Calibrate plug-in softkey, Calibrate probe softkey, Calibrate softkey, IEC Publication 61010-1, calibration input elevation, connector, probe, instrument vertical,...
Page 46 Index shipping procedure, 1-10 specifications, static-safe accessories, swabs, 3-14 technical assistance, trigger delay, input, sensitivity, troubleshooting, Units softkey, Utility key, vertical calibration, voltage probe calibration, warm-up time, Index-2...