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3-7

Calibration Overview

User Calibrations—Optical and Electrical

User Calibrations—Optical and Electrical

The following calibrations can be performed by the user:

O/E User Wavelength Calibration
Plug-in Module Vertical Calibration
Offset Zero Calibration
Dark Calibration
Probe Calibration
Channel Skew
External Scale

Electrical channels have calibration procedures for:

• adjusting timebase skew, for matching propagation delay between channels,

probes, cables, and so forth

• using external probes

Optical channels have calibration procedures for:

• adjusting timebase skew

• monitoring and adjusting internal offsets

• performing a user-defined O/E responsivity adjustment

C A U T I O N

The input circuits can be damaged by electrostatic discharge (ESD). Avoid
applying static discharges to the front panel input connectors. Before
connecting a coaxial cable to the connectors, momentarily short the center and
outer connectors of the cable together. Avoid touching the front panel input
connectors without first touching the frame of the instrument. Be sure the
instrument is properly earth-grounded to prevent buildup of static charge. An
antistatic mat and wristband are strongly recommended, particularly when
working with TDR modules.

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Содержание 83487A

Страница 1: ...Agilent 83487A Optical Electrical Plug In Module User s Guide ...

Страница 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 ...

Страница 3: ... probe power connector One auxiliary power connector The purpose of the plug in module is to provide measurement channels including sampling for the mainframe The plug in module scales the input signal sets the bandwidth of the system and allows the offset to be adjusted so the signal can be viewed The output of the plug in module is an analog sig nal that is applied to the ADCs on the acquisition...

Страница 4: ...er levels exceed 10 dBm 10 mW on the optical channel or 2 V peak ac 16 dBm on the electrical channel To prevent input damage this specified level must not be exceeded Measurement accuracy it s up to you Fiber optic connectors are easily damaged when connected to dirty or damaged cables and accessories The Agilent 83487A optical electrical plug in module s front panel INPUT connector is no exceptio...

Страница 5: ...strument is not used as specified the protection provided by the equipment could be impaired This instrument must be used in a normal condition in which all means for protection are intact only WAR N I N G To prevent electrical shock disconnect the Agilent 83487A optical electrical plug in module from mains before cleaning Use a dry cloth or one slightly dampened with water to clean the external c...

Страница 6: ...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 VENTILATION REQUIREMENTS When installing the product in a cabinet the convection into and out of the product must not be restricted The ambient temperature outside the cabinet must be less than the maximum operating temperature of the product by 4 C for every 100 wa...

Страница 7: ...s inside the instrument Repair of damage due to misuse is not covered under warranty Before connecting any cable to the electrical input momentarily short the center and outer conductors of the cable together Personnel should be properly grounded and should touch the frame of the instrument before touching any connector ...

Страница 8: ...viii General Safety Considerations ...

Страница 9: ...nnel Setup Menu 2 2 Displaying the Channel Setup Menus 2 5 3 Calibration Overview Factory Calibrations 3 4 User Calibrations Optical and Electrical 3 7 Complete Calibration Summary 3 19 4 Specifications and Regulatory Information Specifications 4 3 Characteristics 4 8 Declaration of Conformity 4 9 5 Reference In Case of Difficulty 5 2 Measuring High Power Waveforms 5 6 Error Messages 5 10 Electros...

Страница 10: ......

Страница 11: ...ptical Electrical Plug In Module 1 3 Options and Accessories 1 7 Menu and Key Conventions 1 9 Step 1 Inspect the Shipment 1 10 Step 2 Install the Plug in Module 1 11 Returning the Instrument for Service 1 12 Getting Started ...

Страница 12: ...rma tion on operating conditions such as temperature 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 The input circuits can be damaged by electrostatic discharge ESD Therefore avoid applying static discharges to the front panel input connectors Before connecting any coaxial cable to the connectors momentari...

Страница 13: ...th accurate display of the received optical waveform in optical power units and measurement of the signal s aver age power In addition the User Cal feature provides for consistent accuracy at any wavelength between 750 nm and 860 nm using a source and power meter The Agilent 83487A also is a calibrated reference receiver that is measured to conform to specifications for Fibre Channel FC 1063 and G...

Страница 14: ... optical channel with sensitivity to below 17 dBm 12 4 GHz and 20 GHz electrical channel Trigger channel input to the mainframe Switchable reference filters for transceiver compliance testing Compliance testing at Fibre Channel 1063 and Gigabit Ethernet 1250 rates Measurement capability for single mode or multimode optical signals ...

Страница 15: ...s two channel inputs and an external trigger input The front panel also has a Probe Power connector for Agilent 54700 series probes an Aux Power connector for general purpose use and a key for each channel that displays the softkey menu The softkey menu allows you to access the channel setup features of the plug in module The front power Probe Power connector allows automatic channel scaling and p...

Страница 16: ...igger 4 C AUT IO N The maximum safe input voltage is 2 V peak ac 16 dBm C AUT IO N The input circuits can be damaged by electrostatic discharge ESD Therefore avoid applying static discharges to the front panel input connectors Before connecting any coaxial cable to the connectors momentarily short the center and outer conductors of the cable together Avoid touching the front panel input connectors...

Страница 17: ...n 014 ST connector adapter Option 015 Biconic connector adapter Option 017 SC connector adapter Option 041 1063 and 1250 Mb s switchable internal filters Agilent 10086A ECL terminator Agilent 11982A High speed lightwave receiver Agilent 54006A 6 GHz divider probe Agilent 54008A 22 ns delay line Agilent 54118A 500 MHz to 18 GHz trigger Agilent 83430A Lightwave digital source Agilent 83440B C D High...

Страница 18: ...t 1250 1158 SMA f f adapter Agilent 1250 1749 APC 3 5 f f adapter Agilent 81000FI FC PC SPC APC connector interface Agilent 81000KI SC connector interface Agilent 81000SI DIN 47256 4108 6 connector interface Agilent 81000VI ST connector interface Agilent 81000WI Biconic ...

Страница 19: ...essed and which menu is selected Shifted functions are indicated by the front panel Shift key followed by for example the Local function above the Stop Single front panel key and will be shown as Shift Local A softkey with On and Off in its label can be used to turn the softkey s function on or off To turn the function on press the softkey so that On is highlighted To turn the function off press t...

Страница 20: ...ach SMA 50Ω termination Agilent part number 1810 0118 2 each 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 T...

Страница 21: ...he plug in module are spring loaded so fin ger tighten the knurled screw on the front panel of the plug in module to make sure the plug in is securely seated in the mainframe C AUT IO N Do not use non Agilent Technologies extender cables to operate the plug in module outside of the mainframe The plug in module can be damaged by improper grounding when using extender cables Note If you wish to use ...

Страница 22: ...tenance 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 office for se...

Страница 23: ...O 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 available thro...

Страница 24: ... 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 ...

Страница 25: ...2 Channel Setup Menu 2 2 Displaying the Channel Setup Menus 2 5 Channel Setup Menu ...

Страница 26: ...rth grounded to prevent buildup of static charge Refer to Electrostatic Discharge Information on page 5 12 At the top of the plug in module are the Channel keys These keys give you access to the Channel Setup menu for each input The Channel Setup menu is displayed on the right side of the screen when the Channel key is pressed There are several types of softkeys available A description of the diff...

Страница 27: ...2 3 Channel Setup Menu Channel Setup Menu Figure 2 1 Optical Channel Setup menu ...

Страница 28: ...2 4 Channel Setup Menu Channel Setup Menu Figure 2 2 Electrical Channel Setup menu ...

Страница 29: ...ying the Channel Setup Menus To display the optical Channel Setup menu press the Optical Channel key located above the optical input connector To display the electrical Channel Setup menu press the Electrical Channel key located above the electrical input connector ...

Страница 30: ...d unless it is needed as an operand for waveform math functions Even though the channel display is off you can still use the plug in as a trigger source or as a function source in the Math menu However the analyzer will not trigger unless one or more of the other channel displays are turned on or unless a math function is using one of the channels Key Path Channel Display Scale The Scale softkey c...

Страница 31: ...pad to change the offset setting The fine mode also works with offset When an Agilent 54700 series active probe is connected to the probe power connector the offset control adjusts the external scale factor and offset of the hybrid inside the active probe A probe connected to the auxiliary power con nector will function but the channel scale factor will not be adjusted automat ically The optical c...

Страница 32: ...el Bandwidth Wavelength Wavelength Filter This function selects the specific filter for the type of compliance testing to be performed Key Path Channel Bandwidth Wavelength Filter 1063 Mb s or 1250 Mb s Channel autoscale The Channel autoscale softkey provides a convenient and fast method for deter mining the standard vertical scale setting with the highest resolution that will not clip the wavefor...

Страница 33: ... matches the device connected to the analyzer When the attenuation is set correctly the analyzer maintains the current scale factors if possible All marker values and voltage or wattage measurements will reflect the actual signal at the input to the exter nal device The attenuation range is from 0 0001 1 to 1 000 000 1 When you connect a compatible active probe to the probe power connector adjacen...

Страница 34: ...xt offset When you select Ampere Watt or unknown on an electrical channel or Volt age on an optical channel two additional functions become available External Gain and External Offset These two additional functions allow you to com pensate for the actual characteristics of the probe rather than the ideal char acteristics For example you might have an amplified lightwave converter with ideal charac...

Страница 35: ...ths It also allows you to place the triggered edge at the center of the display when you are using a power splitter connected between the channel and trigger inputs Another use for skew is when you are comparing two waveforms that have a timing difference If you are interested in comparing the shapes of two waveforms rather than the actual timing difference you can use Skew to overlay one waveform...

Страница 36: ...ast mainframe calibration was performed The number indicates how many degrees warmer or cooler the mainframe is compared to the last calibration Channel 1 Calibration Status The instrument displays Calibrated or Uncalibrated depending on whether the last plug in module calibration is still valid A calibration can be invalidated if The mainframe has cycled power The plug in has been repaired reprog...

Страница 37: ...plug in module has not been removed and reinstalled Performing an Offset zero calibration is much faster than performing a com plete vertical calibration Key Path Channel Calibrate Offset zero O E cal The plug in module is provided with factory optical calibrations at 850 nm and 1550 nm The O E cal function allows you to calibrate the instrument for use at one additional user defined wavelength be...

Страница 38: ......

Страница 39: ...3 Factory Calibrations 3 4 User Calibrations Optical and Electrical 3 7 Complete Calibration Summary 3 19 Calibration Overview ...

Страница 40: ...s The first section describes factory calibrations A factory calibration consists of verifying instrument perfor mance to all specifications If an instrument fails to meet specifications adjustment or repair may be necessary For most users this will mean ship ping the instrument back to an authorized service center Some users may purchase the required instrumentation and perform the factory timeba...

Страница 41: ...signs instruments to meet specifi cations over the recommended calibration interval provided that the instru ment is operated within the specified operating environment To maintain specifications periodic recalibrations are necessary We recommend that the plug in module be calibrated at an Agilent Technologies service facility every 12 months Users are encouraged to adjust the calibration cycle ba...

Страница 42: ...ere is a drawing that shows each switch s function and protected position Refer to the Table 3 1 Factory Calibration Summary Calibration What is calibrated Measurements Affected Recommended Interval Softkey Path Mainframe Calibration Accuracy and continuity of the timescale Channels affected optical electrical All time base measurements such as rise time fall time eye width and jitter Annually at ...

Страница 43: ... A mainframe calibration should be performed on a periodic basis annually or when the ambient operating temperature has changed by and remains 5 C dif ferent than the operating temperature at which the last mainframe calibration was performed To see how much the operating temperature has changed since the last mainframe calibration and the date of the last mainframe calibra tion check the Calibrat...

Страница 44: ...hannel measurements is dependent on proper O E calibration O E calibrations should be performed annually Most customers return their optical plug ins to an authorized Agilent Technologies service center for this calibration at the same time they are hav ing their mainframes re calibrated The Agilent 83480 series optical modules have one or two standard wave lengths 850 nm or 1310 1550 nm The O E C...

Страница 45: ...s have calibration procedures for adjusting timebase skew monitoring and adjusting internal offsets performing a user defined O E responsivity adjustment C AUT IO N The input circuits can be damaged by electrostatic discharge ESD Avoid applying static discharges to the front panel input connectors Before connecting a coaxial cable to the connectors momentarily short the center and outer connectors...

Страница 46: ... temperature changes by more than 2 C Utility Calibrate Calibrate Plug in Offset Zero Calibration Vertical offset is calibrated for the optical channel only This calibration doesn tincludevertical scale accuracy Channels affected optical Any optical vertical measurements including Vp to p eye height and extinction ratio Perform a plug in vertical calibration in order to meet published specificatio...

Страница 47: ... Summary Calibration What is calibrated Measurements Affected Recommended Interval Key Path Probe calibration Probe Attenuation Channels affected electrical Any electrical measurement taken with the probe Whenever a probe is connected Electrical Channel Setup Calibrate Calibrate probe Channel Skew Calibrates out the small differences in delay between channels Useful for looking at timing differenc...

Страница 48: ...wavelength calibration 1 Press the plug in module s front panel optical channel SETUP key 2 Press Bandwidth wavelength and then wavelength 3 Press Usr wavelength and then Enter NOTE The optical channel calibration accuracy is heavily dependent on the accuracy to which you know the optical source power For best results measure the optical source power with an optical power meter such as the Agilent...

Страница 49: ...hich the Plug in calibration was performed To obtain the best measurement results it is recommended that a user verti cal calibration be performed after every 10 hours of continuous use or if the temperature has changed by greater than 2 C from the previous vertical cali bration To view the temperature change This procedure displays the temperature change that the instrument has undergone since th...

Страница 50: ...al channel is offset drift this function is useful between the plug in module vertical calibrations if the plug in module has not been removed or reinstalled and the operating temperature has not changed more than 5 C In order to ensure that instrument specifications are met perform the plug in vertical calibration Performing an offset zero calibration is much faster than performing a com plete ve...

Страница 51: ...Dark calibrations should be done for the following conditions Before any critical extinction ratio measurements are made After a plug in vertical calibration If a module has been removed If the mainframe power has been cycled If extinction ratio measurements are being made after the vertical scale or the offset has changed If the line power has been cycled the dark calibration invokes either the o...

Страница 52: ...ion In addition the dark level amplitude when there is no signal present must be on the screen to perform a dark calibration 2 Press the blue shift key and then the Meas eye softkey which is located beneath the display 3 Press Extinction ratio and then Dark cal Disconnect all inputs from the module including the trigger signal and block any ambient light to the photodetector with a connector plug ...

Страница 53: ...ing edges are at about a 45 angle 3 Press the plug in module s front panel channel SETUP key 4 Press Calibrate and then Skew 5 Adjust the skew on one of the channels so that the rising edges overlap at the 50 points Probe Calibration Probe calibration applies to electrical measurements only For active probes such as the Agilent 54701A which the instrument can identify through the probe power conne...

Страница 54: ... to calibrate any network including probes or cable assemblies The instrument calibrates the voltage at the tip of the probe or the cable input To calibrate an Agilent Technologies identifiable probe 1 Press the plug in module s front panel channel SETUP key 2 Press Calibrate and then Calibrate Probe To calibrate a non identifiable probe 1 Connect the voltage probe to the plug in 2 Attach the prob...

Страница 55: ...nown Instead set the external gain and external offset to compensate for the actual characteristics of the probe or device If you do not know the actual characteristics you can refer to the typical specifications that came with the probe or device 1 Press the plug in module s front panel channel SETUP key 2 Press External scale 3 Press Atten units Ratio Attenuation 1 1 and then Units Ampere Volt W...

Страница 56: ...evice under test This feature is useful for adjusting out the effects of devices such as test fixtures and attenuators so that the reading on the display gives the measurement value associated with only the actual device under test To adjust the external scale 1 Press the plug in module s front panel channel SETUP key 2 Press External scale and set the Atten units to decibel 3 Press Attenuation an...

Страница 57: ... optical Amplitude accuracy of all optical channel measurements Optical power meter accuracy Annual factory re calibration of standard wavelengths Not user accessible a O E User Wavelength Calibration The photodetector responsivity Channels affected optical All optical channel measurements at user wavelengths Annual re calibration of user defined non factory wavelengths Optical Channel Setup Calib...

Страница 58: ...on or after a plug in vertical calibration is performed Shift Meas eye Extinction ratio Dark Cal Probe calibration Probe Attenuation Channels affected electrical Any electrical measurement taken with the probe Whenever a probe is connected Electrical Channel Setup Calibrate Calibrate probe Channel Skew Calibrates out the small differences in delay between channels Useful for looking at timing diff...

Страница 59: ...4 Specifications 4 3 Characteristics 4 8 Declaration of Conformity 4 9 Specifications and Regulatory Information ...

Страница 60: ...ribed warranted performance Characteristics Characteristics provide useful nonwarranted information about the func tions and performance of the instrument Characteristics are printed in italics Calibration cycle Agilent Technologies designs instruments to meet specifications over the rec ommended calibration interval provided that the instrument is operated within the specified operating environme...

Страница 61: ...4 hr Timecal c reading 20 GHz 0 4 of full scale 2 mV 3 of reading channel offset 2 C Tcal b reading 0 4 hr Timecal c reading dc Difference two marker accuracy on same channel a 12 4 GHz 0 8 of full scale 1 5 of delta marker reading 2 C Tcal b reading 0 4 hr Timecal c reading 20 GHz 0 8 of full scale 3 of delta marker reading 2 C Tcal b reading 0 4 hr Timecal c reading Transition Time 10 to 90 calc...

Страница 62: ...on be performed after every 10 hours of continuous use or if the temperature has changed by greater than 2 C from the previous vertical calibration b Where Tcal represents the temperature change in Celsius from the last user vertical calibration Note that the temperature term goes to zero upon execution of a vertical calibration c Where Timecal represents the time since the last user vertical cali...

Страница 63: ...al d reading 0 4 hr Timecal e reading Transition Time 10 to 90 calculated from T 0 48 bandwidth optical 160 ps unfiltered mode RMS Noise filtered or unfiltered mode Characteristic 1 5 µW Maximum 2 5 µW Scale Factor full scale is eight divisions Minimum 5 µW div Maximum 100 µW div dc Offset Range 0 2 mW to 0 6 mW referenced to two divisions above bottom of screen Connector Type 62 5 125 µm maximum ...

Страница 64: ...alibration d Where Tcal represents the temperature change in Celsius from the last user vertical calibration Note that the temperature term goes to zero upon execution of a vertical calibration e Where Timecal represents the time since the last user vertical calibration The uncertainty due to time typically stabilizes after 24 hours This term goes to zero upon execution of a vertical calibration f...

Страница 65: ...4 7 Specifications and Regulatory Information Specifications Table 4 4 Power Requirements Supplied by mainframe Table 4 5 Weight Net approximately 1 2 kg 2 6 lb Shipping approximately 2 1 kg 4 6 lb ...

Страница 66: ...tive Probe Service Guide for complete probe characteris tics Refer to the Agilent 83480A 54750A User s Guide for trigger specifications Table 4 6 Trigger Input Characteristics for Electrical and Optical Channels Nominal Impedance 50 Ω Input Connector 3 5 mm m Trigger Level Range 1 V Maximum Safe Input Voltage 2 Vdc ac peak 16 dBm Percent Reflection 10 for 100 ps rise time ...

Страница 67: ...4 9 Specifications and Regulatory Information Declaration of Conformity Declaration of Conformity ...

Страница 68: ......

Страница 69: ...Difficulty 5 2 Measuring High Power Waveforms 5 6 Error Messages 5 10 Electrostatic Discharge Information 5 12 Cleaning Connections for Accurate Measurements 5 14 Agilent Technologies Service Offices 5 24 Reference ...

Страница 70: ...formed 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 This chapter also includes information regarding measuring high power wave forms with the Agilent 83480 Agilent 83487A electrostatic discharge ESD procedures for cleaning both optical and electri...

Страница 71: ...ower 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 Will the mainframe power up without the plug in module installed If the mainframe still does not power up refer to the optional Agilent 83480A 54750A Service Guide or return the mainframe to a quali fied service department ...

Страница 72: ...ed Are the connectors clean See Cleaning Connections for Accurate Measure ments on page 5 14 for more information 2 Perform the following procedures Make sure the instrument is ready to acquire data by pressing Run Find any signals on the channel inputs by pressing Autoscale See if any signals are present at the channel inputs by pressing Trigger Sweep freerun After viewing the signal press trigge...

Страница 73: ...me may need to have the latest operating system firmware installed Options 001 and 002 provide this firmware on a 3 5 inch diskette To load new firmware follow the instructions provided with this diskette If you do not have the optional diskette contact your local Agilent Technologies Service Office refer to Agilent Technologies Service Offices on page 5 24 If the mainframe firmware is current and...

Страница 74: ...shoot is 100 the peak power seen by the Agilent 83487A is 800 µW with 100 overshoot present peak power is roughly four times average power This power level is likely to cause amplifier saturation and waveform distortion If tests are made in the Agilent 83487A fil tered mode the overshoot is suppressed by the filtering that takes place after the amplification Post amplification filtering can hide t...

Страница 75: ...s that the maximum peak signal at the instrument input must be below 400 µW 4 dBm Again this is peak power and should not be confused with average power Attenuation is not required for signals that do not exceed 400 µW peak Table 5 1 on page 5 8 shows the conversion from average power to peak power when the overshoot is 100 the peak power is double the 1 level power and the attenuation needed to m...

Страница 76: ...tion to be accounted for and removed from the measurement Press the Optical Channel Setup key above the optical connector and then the External scale softkey Enter in the value of the attenu ator and the instrument will then read the true signal level prior to attenua tion You can then go back and measure the peak power on the eye diagram again If this measurement is the same as the original peak ...

Страница 77: ... and you want to use the high sensitivity of the Agilent 83487A C AUT IO N The fiber optic connectors on the 5 dB attenuator like all fiber optic connectors are easily damaged when connected to dirty or damaged cables and accessories Before making any connections to the attenuator refer to Cleaning Connections for Accurate Measurements on page 5 14 Summary The Agilent 83480A with the Agilent 83487...

Страница 78: ...ng plug in The mainframe could not correctly read the contents of the memory in the plug in 1 Remove and reinstall the plug in module Each time a plug in is installed the mainframe re reads the memory in the plug in module 2 Verify the plug in module is firmly seated in the mainframe slot 3 Verify the knurled screws at the bottom of the plug in module are finger tight 4 Install the plug in in a di...

Страница 79: ...he plug in module 2 Verify the plug in module is firmly seated in the mainframe slot 3 Verify the knurled screws at the bottom of the plug in module are finger tight 4 The standard Agilent 54750A mainframe does not accept the Agilent 83487A optical electrical plug in module To use the module a firmware upgrade must first be installed Order the Agilent 83480K communications firmware kit and install...

Страница 80: ...amage 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 Conductive table mat and wrist strap combination Conductive floor mat and heel strap combination ...

Страница 81: ...ESD Damage The following suggestions may help reduce ESD damage that occurs during testing and servicing operations Personnel should be grounded with a resistor isolated wrist strap before re moving any assembly from the unit Be sure all instruments are properly earth grounded to prevent a buildup of static charge Table 5 2 Static Safe Accessories Agilent Part Number Description 9300 0797 Set incl...

Страница 82: ... 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 5 1 on page 5 15 shows the basic components of a ...

Страница 83: ...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...

Страница 84: ...n 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...

Страница 85: ...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 5 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...

Страница 86: ... 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 5 4 Clean problem free fiber end and ferrule Figure 5 5 Dirty fiber end and ferrule from poor cleaning ...

Страница 87: ...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...

Страница 88: ...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...

Страница 89: ...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...

Страница 90: ...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...

Страница 91: ...ters allow you to connect the instrument to different types of fiber optic cables Figure 5 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...

Страница 92: ...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...

Страница 93: ...l display 2 6 input 1 5 scale 2 10 setup 1 2 2 2 Channel 1 Calibration Status message 2 12 Channel autoscale softkey 2 8 Channel key 1 2 2 2 classification product v cleaning adapters 5 23 cabinet v fiber optic connections 5 14 5 22 non lensed connectors 5 22 compressed dust remover 5 21 connection devices 1 7 connector care 5 14 cotton swabs 5 21 Current Date message 2 12 Current Frame Delta Temp...

Страница 94: ...Offset zero softkey 2 13 optical channel 2 7 optical to electrical converter scaling 2 9 options and accessories 1 7 P packaging for shipment 1 13 plug in message 2 13 plug in module features iii front panel 1 5 serial number 1 10 plug in module vertical calibration 3 11 power level 2 7 maximum input iv probe attenuation 2 9 2 13 attenuation factor 2 9 characteristics 2 10 power 2 7 power connecto...

Страница 95: ...source 2 6 troubleshooting 5 2 U Units softkey 2 6 2 10 user calibrations 3 7 V vertical measurement 2 10 scale 2 6 2 8 waveform 2 7 voltage measurement 2 9 probe 2 13 voltage probe calibration 3 15 W wattage measurement 2 9 waveform display 2 6 horizontal 2 11 waveforms high power 5 6 Wavelength key 2 8 wavelength settings 2 7 ...

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