Agilent Technologies 11898A User Manual Download Page 37 | Manualshive

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3-11

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. Clean, problem-free fiber end and ferrule.

Figure 3-5. Dirty fiber end and ferrule from poor cleaning.

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Summary of Contents for 11898A

Page 1: ...Agilent 11898A Module Extender User s Guide ...

Page 2: ... defects resulting from improper or inadequate maintenance by Buyer Buyer supplied software or interfac ing unauthorized modifica tion or misuse operation outside of the environmental specifications for the product or improper site preparation or maintenance No other warranty is expressed or implied Agilent Technologies specifically dis claims the implied warranties of merchantability and fitness ...

Page 3: ... impractical to relocate the device under test to the front panel of the mainframe the module extender provides an alternative method of minimizing cables The extender also makes it easy to test a device that must be isolated from vibration on an optical bench Measurement Accuracy To ensure that you obtain the specified accuracy for the module you are using with the extender you must perform a plu...

Page 4: ...ernal case parts Do not attempt to clean internally WAR N I N G This is a Safety Class 1 product provided with a protective earthing 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 product is likely to make the product dangerous Intentional i...

Page 5: ...r dissipated in the cabinet is greater than 800 watts then forced convection must be used C AUT IO N Always use the three prong ac power cord supplied with this instrument Failure to ensure adequate earth grounding by not using this cord may cause instrument damage C AUT IO N Do not connect ac power until you have verified the line voltage is correct Damage to the equipment could result C AUT IO N...

Page 6: ......

Page 7: ...p 3 Install the Module Extender 1 6 Step 4 Perform Calibrations 1 8 Returning the Instrument for Service 1 10 2 Specifications and Regulatory Information Specifications 2 3 Declaration of Conformity 2 5 3 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 ...

Page 8: ......

Page 9: ...pect 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: ...hows 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 Agilent 11898A bay section inserted in mainframe section ...

Page 11: ...the extender that is installed in the mainframe and the bay section is the portion of the module extender where a plug in is installed C AUT IO N This product is designed for use in INSTALLATION CATEGORY II and POLLUTION DEGREE 2 per IEC 1010 and 664 respectively C AUT IO N Input circuits can be damaged by electrostatic discharge ESD Therefore avoid applying static discharges to the front panel in...

Page 12: ...r 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 Notify the Agilent Technologies customer engine...

Page 13: ... on the front panel C AUT IO 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 Pulling these cables will damage the cables or their connectors C AUT IO N Do not use non Agilent Technologies extender cables to operate the plug in m...

Page 14: ... section of the module extender in an Agilent 83480A or Agilent 54750A mainframe and tighten the knurled screws on the module extender front panel The module extender can be installed in slots 1 and 2 or 3 and 4 on the Agilent 83480A or Agilent 54750A mainframe The plug in module will not function if the module extender is installed in slots 2 and 3 2 Install a plug in module in the bay section of...

Page 15: ...rigger 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 Attach the trigger signal to the Trigger Input connector on the front panel To return to triggering at the remote module reat...

Page 16: ...tarily short the center and outer conductors of the cable together Avoid touching the front panel input connectors without first touching the frame of the instrument Be sure that the instrument is properly earth grounded to prevent buildup of static charge For more information on ESD refer to Electrostatic Discharge Information on page 3 5 Performing a plug in module vertical calibration 1 Press U...

Page 17: ...ive probes For passive probes or nonidentified probes the instrument adjusts the vertical scale factors only if a probe calibration is performed Calibrating other devices Because the mainframe s CAL signal is a voltage source it cannot be used to calibrate to the probe tip when the units are set to Ampere Watt or Unknown Instead set the external gain and external offset to compensate for the actua...

Page 18: ...olo gies maintenance contract it will be repaired under the terms of the warranty or contract the warranty is at the front of this manual If the instrument is no longer under warranty or is not covered by an Agilent Technologies mainte nance plan Agilent Technologies will notify you of the cost of the repair after examining the unit When an instrument is returned to a Agilent Technologies service ...

Page 19: ...dust C AUT IO N Instrument damage can result from using packaging materials other than the original materials Never use styrene pellets as packaging material They do not adequately cushion the instrument or prevent it from shifting in the carton They may also cause instrument damage by generating static electricity 3 Pack the instrument in the original shipping containers Original materials are av...

Page 20: ...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 4 Seal the carton with strong nylon adhesive tape 5 Mark the carton FRAGILE HANDLE WITH CARE 6 Retain copies of all shipping papers ...

Page 21: ...2 Specifications 2 3 Declaration of Conformity 2 5 Specifications and Regulatory Information ...

Page 22: ... plug in modules used with the extender refer to the documentation provided with the plug in module However due to the additional cable length of the module extender some plug in performance parameters may be affected This chapter provides information on the affected performance parameters Specifications Specifications described warranted performance Characteristics Characteristics provide useful ...

Page 23: ...er sensitivity The extra length of trigger cable in the module extender results in additional loss at high frequencies 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 enhan...

Page 24: ... 5 GHz Remote operation with module extender trigger input at mainframe none 200 mV pk pk Remote operation with module extender trigger input at remote module approximately 4 dB at 2 5 GHz approximately 320 mV pk pk Table 2 3 General Specifications Use Indoor Weight approximately 1 8 kg 4 lb Dimensions Height H 15 2 cm 6 0 in Width W 9 1 cm 3 6 in Depth D 27 8 cm 10 9 in Extension C 1 52m 60 in ...

Page 25: ...2 5 Specifications and Regulatory Information Declaration of Conformity Declaration of Conformity ...

Page 26: ......

Page 27: ...3 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: ... information regarding electrostatic discharge ESD procedures for cleaning both optical and electrical connections and a list of Agilent Technologies service offices If the mainframe does not operate Make the following checks Is the line fuse good Does the line socket have power Is the unit plugged in to the proper ac power source Is the mainframe turned on Is the rear panel line switch set to on ...

Page 29: ...ettings correct Can the problem be reproduced Are the connectors clean See Cleaning Connections for Accurate Measure ments on page 3 7 for more information If all of the above steps check out okay and the plug in module still does not operate properly refer to the Troubleshooting section of the documentation provided with the plug in module To inspect and replace fuses The Agilent 11898A module ex...

Page 30: ...3 4 Reference In Case of Difficulty WAR 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: ... at a static safe work station The following figure shows an example of a static safe work station using two types of ESD protection Conductive table mat and wrist strap combination Conductive floor mat and heel strap combination Both types when used together provide a significant level of ESD protection Of the two only the table mat and wrist strap combination provides adequate ESD protection whe...

Page 32: ...orking on circuitry with a voltage potential greater than 500 volts Table 3 1 Static Safe Accessories Agilent Part Number Description 9300 0797 3M static control mat 0 6 m 1 2 m 2 ft 4 ft and 4 6 cm 15 ft ground wire The wrist strap and wrist strap cord are not included They must be ordered separately 9300 0980 Wrist strap cord 1 5 m 5 ft 9300 1383 Wrist strap color black stainless steel without c...

Page 33: ... the mechanical assembly that holds the ferrule in position against another identical ferrule 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 Figure 3 1 on page 3 8 shows the basic components of a t...

Page 34: ...ents a good compromise between performance reli ability and cost If properly maintained and cleaned this connector can withstand many repeated connections However many instrument specifications require tighter tolerances than most connectors including the FC PC style can deliver These instruments cannot tolerate connectors with the large non concentricities of the fiber common with ceramic style f...

Page 35: ... of the Diamond HMS 10 connector The nickel silver allows an active centering process that permits the glass fiber to be moved to the desired position This process first stakes the soft nickel silver to fix the fiber in a near center location then uses a post active staking to shift the fiber into the desired position within 0 2 µm This process plus the keyed axis allows very precise core to core ...

Page 36: ...d of the fiber any stray particles or finger oil can have a significant effect on connector performance Where many repeat connections are required use of a connector saver or patch cable is recommended Figure 3 4 shows the end of a clean fiber optic cable The dark circle in the center of the micrograph is the fiber s 125 µm core and cladding which carries the light The surrounding area is the soft...

Page 37: ... 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 Clean problem free fiber end and ferrule Figure 3 5 Dirty fiber end and ferrule from poor cleaning ...

Page 38: ...ptic cable into a connector gently insert it in as straight a line as possible Tipping and inserting at an angle can scrape material off the inside of the connector or even break the inside sleeve of connectors made with ceramic material When inserting a fiber optic connector into a connector make sure that the fi ber end does not touch the outside of the mating connector or adapter Avoid over tig...

Page 39: ...rmance they can be used to determine connector degradation A smooth polished fiber end should pro duce a good return loss measurement The quality of the polish establishes the difference between the PC physical contact and the Super PC con nectors Most connectors today are physical contact which make glass to glass connections therefore it is critical that the area around the glass core be clean a...

Page 40: ...cedures 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 th...

Page 41: ...an lint free cotton swab or lens paper 4 Clean the fiber end with the swab or lens paper Do not scrub during this initial cleaning because grit can be caught in the swab and become a gouging element 5 Immediately dry the fiber end with a clean dry lint free cotton swab or lens paper 6 Blow across the connector end face from a distance of 6 to 8 inches using filtered dry compressed air Aim the comp...

Page 42: ...ters allow you to connect the instrument to different types of fiber optic cables Figure 3 7 Universal adapters 1 Apply isopropyl alcohol to a clean foam swab Cotton swabs can be used as long as no cotton fibers remain after cleaning The foam swabs listed in this section s introduction are small enough to fit into adapters Although foam swabs can leave filmy deposits these deposits are very thin a...

Page 43: ...s listed below Agilent Technologies Service Numbers Austria 01 25125 7171 Belgium 32 2 778 37 71 Brazil 11 7297 8600 China 86 10 6261 3819 Denmark 45 99 12 88 Finland 358 10 855 2360 France 01 69 82 66 66 Germany 0180 524 6330 India 080 34 35788 Italy 39 02 9212 2701 Ireland 01 615 8222 Japan 81 426 56 7832 Korea 82 2 3770 0419 Mexico 5 258 4826 Netherlands 020 547 6463 Norway 22 73 57 59 Russia 7...

Page 44: ......

Page 45: ...stance v D damaged shipment 1 4 declaration of conformity 2 5 dust caps 3 15 E ESD electrostatic discharge 3 5 Ext gain softkey 1 9 Ext offset softkey 1 9 external gain 1 9 offset 1 9 F fiber optics cleaning connections 3 7 connectors covering 1 11 foam swabs 3 14 fuse values iv fuses 3 3 I IEC Publication 61010 1 iv input connector 3 7 instrument inspecting 1 4 returning for service 1 10 M mainfr...

Page 46: ...tions 2 2 static safe accessories 3 6 swabs 3 14 T technical assistance v trigger delay 2 3 input 1 7 sensitivity 2 3 troubleshooting 3 2 U Units softkey 1 9 Utility key 1 8 V vertical calibration 1 8 voltage probe calibration 1 8 W warm up time 2 3 ...

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