Agilent Agilent 86120C - Manual

vi General Safety Considerations General Safety Considerations This p roduct has been designed and tested in accordance with IEC 61010- 1, and has been sup p lied in a safe condition. The instruction documentation contains information and warnings which must be fol-lowed by the user to ensure safe o...

vii General Safety Considerations W A R N I N G If this instrument 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. W A R N I N G No operator serviceable parts...

viii General Safety Considerations C A U T I O N This product complies with Overvoltage Category II and Pollution Degree 2. C A U T I O 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 (ou...

Contents Contents-1 The Agilent 86120C—At a Glance iiiGeneral Safety Considerations vi 1 Getting Started Step 1. Inspect the Shipment 4Step 2. Connect the Line-Power Cable 5Step 3. Connect a Printer 6Step 4. Turn on the Agilent 86120C 7Step 5. Enter Your Elevation 8Step 6. Select Medium for Waveleng...

Contents-2 Contents 4 Programming Commands Common Commands 3Measurement Instructions 15CALCulate1 Subsystem 25CALCulate2 Subsystem 31CALCulate3 Subsystem 44CONFigure Measurement Instruction 74DISPlay Subsystem 75FETCh Measurement Instruction 79HCOPy Subsystem 80MEASure Measurement Instruction 81READ...

1 Step 1. Inspect the Shipment 1- 4 Step 2. Connect the Line- Power Cable 1- 5 Step 3. Connect a Printer 1- 6 Step 4. Turn on the Agilent 86120C 1- 7 Step 5. Enter Your Elevation 1- 8 Step 6. Select Medium for Wavelength Values 1- 9 Step 7. Turn Off Wavelength Limiting 1- 10 Returning the Instrument...

1-2 Getting Started Getting Started Getting Started The instructions in this chap ter show you how to install your Agilent 86120C. You should be able to finish these p rocedures in about ten to twenty minutes. After you’ve comp leted this chap ter, continue with Chapter 2, “Making Measurements” . Re...

1-4 Getting Started Step 1. Inspect the Shipment Step 1. Inspect the Shipment 1 Verify that all system components ordered have arrived by comparing the shipping forms to the original purchase order. Inspect all shipping containers. If your shipment is damaged or incomplete, save the packing material...

1-5 Getting Started Step 2. Connect the Line-Power Cable Step 2. Connect the Line- Power Cable W A R N I N G This is a Safety Class I Product (provided with protective earth). The mains plug shall only be inserted in a socket outlet provided with a protective earth contact. Any interruption of the p...

1-6 Getting Started Step 3. Connect a Printer 3 Connect the other end of the line- p ower cord to the p ower recep tacle. Various p ower cables are available to connect the Agilent 86120C to ac p ower outlets unique to sp ecific geograp hic areas. The cable ap p rop ri-ate for the area to which the ...

1-7 Getting Started Step 4. Turn on the Agilent 86120C Step 4. Turn on the Agilent 86120C 1 Press the front- panel LINE key. After ap p roximately 20 seconds, the display should look similar to the figure below. The front- panel LINE switch disconnects the mains circuits from the mains sup p ly afte...

1-8 Getting Started Step 5. Enter Your Elevation Step 5. Enter Your Elevation In order for your Agilent 86120C to accurately measure wavelengths and meet its p ublished sp ecifications, you must enter the elevation where you will be performing your measurements. 1 Press the Setup key. 2 Press the MO...

1-9 Getting Started Step 6. Select Medium for Wavelength Values Step 6. Select Medium for Wavelength Values Because wavelength varies with the material that the light p asses through, the Agilent 86120C offers wavelength measurements in two mediums: vacuum and standard air. 1 Press the Setup key. 2 ...

1-10 Getting Started Step 7. Turn Off Wavelength Limiting Step 7. Turn Off Wavelength Limiting The instrument’s Preset key sets the entire Agilent 86120C wavelength range of 1270–1650 nm. If a user- defined wavelength range limit was set using WL LIM , the following procedure will ensure that respon...

1-11 Getting Started Returning the Instrument for Service Returning the Instrument for Service The instructions in this section show you how to p rop erly return the instrument for rep air or calibration. Always call the Agilent Technolo-gies Instrument Support Center first to initiate service befor...

1-12 Getting Started Returning the Instrument for Service Preparing the instrument for shipping 1 Write a complete description of the failure and attach it to the instrument. Include any specific performance details related to the p roblem. The following information should be returned with the instr...

2 Measuring Wavelength and Power 2- 3 Peak WL mode 2-4 List by WL or Power modes 2-6 Total power and average wavelength 2-7 Limiting the wavelength measurement range 2-8 Measuring broadband devices and chirped lasers 2-9 Graphical display of optical power spectrum 2-10 Instrument states 2-11 Power b...

2-2 Making Measurements Making Measurements Making Measurements In this chapter, you’ll learn how to make a variety of fast, accurate measurements. As you p erform these measurements, keep in mind the following points: • 1270–1650 maximum input wavelength range • +10 dBm maximum total displayed inpu...

2-3 Making Measurements Measuring Wavelength and Power Measuring Wavelength and Power This section gives you step - by- step instructions for measuring p eak wavelength, average wavelength, peak power, and total input power. There are three display modes: • Peak wavelength• List- by- wavelength or p...

2-4 Making Measurements Measuring Wavelength and Power Peak WL mode When Peak WL is pressed, the display shows the largest amplitude line in the sp ectrum. The word PEAK is shown on the screen. If multip le laser lines are present at the input, the number of lines located will be shown along the rig...

2-5 Making Measurements Measuring Wavelength and Power 3 To move the cursor to view other signals, p ress: • PREV WL to select next (p revious) shorter wavelength. • NEXT WL to select next longer wavelength. • PEAK to signal with greatest p ower. • PREV PK to select next lower p ower signal. • NEXT ...

2-6 Making Measurements Measuring Wavelength and Power List by WL or Power modes In the list- by- wavelength or list- by- power modes, the measurements of five laser lines can be disp layed at any one time. Use the and softkeys to move the cursor through the list of signals; the list can contain up ...

2-7 Making Measurements Measuring Wavelength and Power Total power and average wavelength In the third available disp lay mode, the Agilent 86120C disp lays the average wavelength as shown in the following figure. The disp layed power level is the total input power to the instrument. It is the sum o...

2-8 Making Measurements Measuring Wavelength and Power The following equation shows how individual p owers of laser lines are summed together to obtain the total power value: where, n is the number of laser lines included in the measurement. P i is the peak power of an individual laser line. Power u...

2-9 Making Measurements Measuring Wavelength and Power Measuring broadband devices and chirped lasers When first turned on (or the green Preset key is p ressed), the Agilent 86120C is configured to measure narrowband devices such as DFB lasers and modes of FP lasers. If you p lan to measure broadban...

2-10 Making Measurements Measuring Wavelength and Power Graphical display of optical power spectrum A graphical display of optical power versus wavelength is shown from the start wavelength value to the stop wavelength value. The start wavelength value is shown in the up p er- left corner of the gra...

2-11 Making Measurements Measuring Wavelength and Power Instrument states Four different instrument states can be saved and recalled at a later time. The actual instrument conditions that are saved are identical to those saved from the p revious state after p ower is turned on. These conditions are ...

2-12 Making Measurements Changing the Units and Measurement Rate Changing the Units and Measurement Rate This section includes step - by- step instructions for changing the units and measurement rate. This section includes: Displayed units 2- 12 Measurement rate 2- 13 Continuous or single measuremen...

2-13 Making Measurements Changing the Units and Measurement Rate 4 Press WL and select one of the following units. Then, p ress RETURN to complete your selection: • NM for nanometers • THZ for Tera Hertz • CM –1 for wave number 5 Press POWER and select one of the following units: • DBM for decibels ...

2-14 Making Measurements Changing the Units and Measurement Rate To change the measurement speed 1 Press the Setup key. 2 Press the MORE softkey. 3 Press the UPDATE softkey. 4 Select either NORMAL or FAST . Continuous or single measurements The Agilent 86120C continuously measures the input spectrum...

2-15 Making Measurements Defining Laser-Line Peaks Defining Laser- Line Peaks The Agilent 86120C uses two rules to identify valid laser- line peaks. Understanding these rules is essential to getting the most from your measurements. For example, these rules allow you to “hide” AM mod-ulation sideband...

2-16 Making Measurements Defining Laser-Line Peaks Peak excursion The peak excursion defines the rise and fall in amplitude that must take p lace in order for a laser line to be recognized. The rise and fall can be out of the noise, or in the case of two closely sp aced signals, out of the filter sk...

2-17 Making Measurements Defining Laser-Line Peaks 3 Press PX EXC , and enter the peak excursion value. Use the softkey to select the digit that requires editing. Use the and softkeys to change the value. The p eak excursion value can range from 1 to 30 dB. The default value is 15 dB. 4 Press RETURN...

2-18 Making Measurements Measuring Laser Separation Measuring Laser Separation It is often imp ortant to measure the wavelength and p ower sep aration between multiple laser lines. This is especially true in wavelength- divi-sion- multiplexed (WDM) systems where channel spacing must be adhered to. T...

2-19 Making Measurements Measuring Laser Separation Channel separation Sup p ose that you want to measure sep aration on a system having the sp ectrum shown in the following figure. The Agilent 86120C displays separation on this spectrum as shown in the following figure. Notice that the 1541.747 nm ...

2-20 Making Measurements Measuring Laser Separation To measure channel separation 1 Press the front- panel Preset key. 2 Press List by WL . 3 Press the Delta On key. Use the Off key to turn off the measurement. 4 Select the typ e of sep aration to observe: • ∆ WL displays channel separation. • ∆ WL ...

2-21 Making Measurements Measuring Laser Separation Measuring flatness You can use relative power measurements to measure f latness (pre-emphasis) in a WDM system. Simply select one carrier as the reference and measure the remaining carriers relative to the reference level. The p ower differences re...

2-22 Making Measurements Measuring Laser Drift Measuring Laser Drift In this section, you’ll learn how the Agilent 86120C can be used to monitor drift (changes to a laser’s wavelength and amplitude over time). Drift is measured simultaneously for every laser line that is identified at the input. The...

2-23 Making Measurements Measuring Laser Drift You can restart the drift measurement at any time by p ressing the RESET softkey. All minimum and maximum values are reset to the ref- erence values, and the Agilent 86120C begins to monitor drift from the current laser line values. Move the cursor up a...

2-24 Making Measurements Measuring Laser Drift maximum wavelength and maximum power may not have occurred simultaneously. Display shows absolute minimum values since the drift measurement was started. This measurement gives the shortest wavelength and smallest power measured. The laser line of inter...

2-25 Making Measurements Measuring Signal-to-Noise Ratios Measuring Signal- to- Noise Ratios Signal- to- noise measurements provide a direct indication of system p erformance. Signal- to- noise measurements are esp ecially imp ortant in WDM systems because there is a direct relation between signal- ...

2-26 Making Measurements Measuring Signal-to-Noise Ratios Location of noise measurements Automatic interpolation When the signal- to- noise “auto” function is selected, the Agilent 86120C first determines the p roximity of any adjacent signal. If the next closest signal is ≤ 200 GHz (app roximately ...

2-27 Making Measurements Measuring Signal-to-Noise Ratios Automatic interpolation User- entered wavelength When the signal- to- noise “user” function is selected, the Agilent 86120C uses only one wavelength to measure the noise power for all signals. This wavelength is set by the user and all signal...

2-29 Making Measurements Measuring Signal-to-Noise Ratios with Averaging Measuring Signal- to- Noise Ratios with Averaging When the lasers being measured are modulated, especially with repeti-tive data formats such as SONET or PRBS, the noise f loor is raised. Averaging reduces the noise f loor and ...

2-30 Making Measurements Measuring Signal-to-Noise Ratios with Averaging averages taken so far. The maximum number of averages is 900, the minimum number of averages is 10, and the default (Preset) value is 100 averages. A measurement with 100 averages takes about 2 minutes to comp lete. When the me...

2-31 Making Measurements Measuring Fabry-Perot (FP) Lasers Measuring Fabry- Perot (FP) Lasers The Agilent 86120C can perform several measurements on Fabr y- Perot lasers including FWHM and mode sp acing. The disp lay shows the mea-surement results in the selected wavelength and amplitude units. In a...

2-33 Making Measurements Measuring Fabry-Perot (FP) Lasers PWR The summation of the power in each of the selected peaks, or modes, that satisfy the peak-excursion and peak-threshold criteria. The peak excursion and peak threshold settings define the laser modes included in the measurement. Because t...

2-34 Making Measurements Measuring Modulated Lasers Measuring Modulated Lasers A laser that is amp litude modulated at low frequencies (for examp le, modulated in the audio frequency range) can cause sp urious wave-lengths to be displayed below and above the correct wavelength. The power of these sp...

2-35 Making Measurements Measuring Modulated Lasers The graphical display is useful for locating these spurious wavelengths. Their amp litude will be below that of the correct wavelength and they will be broad, rounded p eaks comp ared to the sharp p eak of the cor-rect wavelength. Use the Peak Thre...

2-36 Making Measurements Measuring Total Power Greater than 10 dBm Measuring Total Power Greater than 10 dBm The maximum total power that can be measured by the Agilent 86120C is 10 dBm. However, with the addition of an external attenuator, more p ower can be ap p lied. This may be necessar y at the...

2-37 Making Measurements Calibrating Measurements Calibrating Measurements The wavelength of light changes depending on the material that the light is p assing through. To disp lay meaningful wavelength measure-ments, the Agilent 86120C performs two step s: 1 Measures the wavelength in air. 2 Conver...

2-38 Making Measurements Calibrating Measurements To enter the elevation 1 Press the Setup key. 2 Press the MORE softkey. 3 Press the CAL softkey. 4 Press ELEV . 5 Use the and softkeys to enter the elevation in meters. Entries jump in 500 meter steps from 0 m to 5000 m. In order for the Agilent 8612...

2-39 Making Measurements Printing Measurement Results Printing Measurement Results Measurement results can be sent directly to a printer. Simply connect a compatible printer to the rear- panel PARALLEL PRINTER PORT con- nector. The outp ut is ASCII text. An examp le of a comp atible p rinter is Hewl...

2-40 Making Measurements Cleaning Connections for Accurate Measurements Cleaning Connections for Accurate Measurements Today, advances in measurement capabilities make connectors and connection techniques more important than ever. Damage to the con-nectors on calibration and verification devices, te...

2-41 Making Measurements Cleaning Connections for Accurate Measurements • Is an instrument- grade connector with a precision core alignment re- quired? • Is rep eatability tolerance for reflection and loss imp ortant? Do your specifications take repeatability uncertainty into account? • Will a conne...

2-43 Making Measurements Cleaning Connections for Accurate Measurements The soft core, while allowing p recise centering, is also the chief liabil-ity of the connector. The soft material is easily damaged. Care must be taken to minimize excessive scratching and wear. While minor wear is not a proble...

2-44 Making Measurements 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 scrap e the connector. • Avoid matching g...

2-45 Making Measurements Cleaning Connections for Accurate Measurements Figure 2-8. Damage from improper cleaning. While these often work well on first insertion, they are great dirt mag-nets. The oil or gel grabs and holds grit that is then ground into the end of the fiber. Also, some early gels we...

2-46 Making Measurements Cleaning Connections for Accurate Measurements tor p ressure. Also, if a p iece of grit does hap p en to get by the cleaning procedure, the tighter connection is more likely to damage the glass. Tighten the connectors just until the two fibers touch. • Keep connectors covere...

2-47 Making Measurements Cleaning Connections for Accurate Measurements Visual inspection of fiber ends Visual insp ection of fiber ends can be help ful. Contamination or imperfections on the cable end face can be detected as well as cracks or chip s in the fiber itself. Use a microscop e (100X to 2...

2-48 Making Measurements Cleaning Connections for Accurate Measurements C A U T I O N Agilent Technologies strongly recommends that index matching compounds not be applied to their instruments and accessories. Some compounds, such as gels, may be difficult to remove and can contain damaging particul...

2-49 Making Measurements Cleaning Connections for Accurate Measurements 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- fr...

2-50 Making Measurements Cleaning Connections for Accurate Measurements Although foam swabs can leave filmy deposits, these deposits are very thin, and the risk of other contamination buildup on the inside of adapt-ers greatly outweighs the risk of contamination by foam swabs. 2 Clean the adapter wi...

3 Addressing and Initializing the Instrument 3- 3 To change the GPIB address 3-4 Making Measurements 3- 5 Commands are grouped in subsystems 3-7 Measurement instructions give quick results 3-9 The format of returned data 3-15 Monitoring the Instrument 3- 16 Status registers 3-17 Queues 3-22 Reviewin...

3-2 Programming Programming Programming This chapter explains how to program the Agilent 86120C. The pro-gramming syntax conforms to the IEEE 488.2 Standard Digital Inter-face for Programmable Instrumentation and to the Standard Commands for Programmable Instruments (SCPI). Where to begin… The progr...

3-3 Programming Addressing and Initializing the Instrument Addressing and Initializing the Instrument The Agilent 86120C’s GPIB address is configured at the factor y to a value of 20. You must set the outp ut and inp ut functions of your p ro-gramming language to send the commands to this address. Y...

3-4 Programming Addressing and Initializing the Instrument Notice in the examp le above, that the commands are sent to an instru-ment address of 720. This indicates address 20 on an interface with select code 7. Pressing the green Preset key does not change the GPIB address. Set single acquisition m...

3-7 Programming Making Measurements Commands are grouped in subsystems The Agilent 86120C commands are grouped in the following sub-systems. You’ll find a descrip tion of each command in Chapter 4, “Pro- gramming Commands” . Subsystem Purpose of Commands Measurement Instructions Perform frequency, w...

3-9 Programming Making Measurements Measurement instructions give quick results The easiest way to measure wavelength, frequency, or power is to use the MEASure command. The MEASure command is one of four mea-surement instructions: MEASure, READ, FETCh, and CONFigure. The syntax for measurement inst...

3-10 Programming Making Measurements A common p rogramming error is to send the :MEASure command when the instrument is in the continuous measurement acquisition mode. Because :MEASure contains an :INIT:IMM command, which expects the single measurement acquisition mode, an error is gener-ated, and t...

3-11 Programming Making Measurements Also, because new data is not collected, FETCh is especially useful when characterizing transient data. FETCh does not reconfigure the disp lay. For examp le, if the disp lay is in the Peak WL mode, sending :FETCh:ARRay does not configure the display to the List ...

3-12 Programming Making Measurements Always force the Agilent 86120C to wait for non- sequential com-mands The Agilent 86120C normally processes its remote programming com-mands sequentially. The instrument waits until the actions specified by a p articular command are comp letely finished before re...

3-13 Programming Making Measurements The benefit of non- sequential commands is that, in some situations, they can reduce the overall execution times of programs. For example, you can set the peak excursion, peak threshold, and elevation and use a *WAI command at the end to save time. However, non- ...

3-14 Programming Making Measurements Measure delta, drift, and signal- to- noise To select a measurement, use one of the following STATe commands: CALC3:DELT:POW:STAT (delta power) CALC3:DELT:WAV:STAT (delta wavelength) CALC3:DELT:WPOW:STAT (delta power and wavelength) CALC3:DRIF:STAT (drift) CALC3:...

3-15 Programming Making Measurements The format of returned data Measurements are returned as strings All measurement values are returned from the Agilent 86120C as ASCII strings. When an array is returned, the individual values are separated by the comma character. Determine the number of data poin...

3-16 Programming Monitoring the Instrument Monitoring the Instrument Almost every p rogram that you write will need to monitor the Agilent 86120C for its operating status. This includes quer ying execu-tion or command errors and determining whether or not measure-ments have been completed. Several s...

3-17 Programming Monitoring the Instrument Status registers The Agilent 86120C p rovides four registers which you can quer y to monitor the instrument’s condition. These registers allow you to deter-mine the following items: • Status of an operation • Availability of the measured data • Reliability ...

3-19 Programming Monitoring the Instrument The Status Byte Register can be read using either the *STB? common command or the GPIB serial p oll command. Both commands return the decimal- weighted sum of all set bits in the register. The difference between the two methods is that the serial poll comma...

3-20 Programming Monitoring the Instrument Standard Event Status register The Standard Event Status Register monitors the following instrument status events: • OPC - Op eration Comp lete• RQC - Request Control• QYE - Query Error• DDE - Device Dep endent Error• EXE - Execution Error• CME - Command Er...

3-21 Programming Monitoring the Instrument Enabling register bits with masks Several masks are available which you can use to enable or disable individual bits in each register. For example, you can disable the Hard-copy bit in the OPERation Status Register so that even though it goes high, it can n...

3-22 Programming Monitoring the Instrument Queues There are two queues in the instrument: the output queue and the error queue. The values in the outp ut queue and the error queue can be queried. Output queue The output queue stores the instrument responses that are generated by certain commands and...

3-23 Programming Reviewing SCPI Syntax Rules Reviewing SCPI Syntax Rules SCPI command are grouped in subsystems In accordance with IEEE 488.2, the instrument’s commands are grouped into “subsystems.” Commands in each subsystem perform sim-ilar tasks. The following subsystems are provided: Measuremen...

3-24 Programming Reviewing SCPI Syntax Rules OUTPUT 720;”:MEAS:SCAL:POW? MAX” Programs written in long form are easily read and are almost self- doc-umenting. Using short form commands conserves the amount of con-troller memor y needed for p rogram storage and reduces the amount of I/O activity. The...

3-25 Programming Reviewing SCPI Syntax Rules Combine commands from dif ferent subsystems You can send commands and program queries from different sub-systems on the same line. Simp ly p recede the new subsystem by a semicolon followed by a colon. In the following example, the colon and semicolon p a...

3-26 Programming Reviewing SCPI Syntax Rules is taken care of automatically when you include the entire instruction in a string. Several rep resentations of a number are p ossible. For example, the following numbers are all equal: 28 0.28E2 280E-1 28000m 0.028K 28E-3K If a measurement cannot be made...

3-27 Programming Reviewing SCPI Syntax Rules Program message terminator The string of instructions sent to the instrument are executed after the instruction terminator is received. The terminator may be either a new- line (NL) character, the End- Or- Identify (EOI) line asserted, or a combination of...

3-28 Programming Example Programs Example Programs The following example programs are provided in this section: Example 1. Measure a DFB laser 3- 30 Example 2. Measure WDM channels 3- 32 Example 3. Measure WDM channel drift 3- 34 Example 4. Measure WDM channel separation 3- 37 Example 5. Measure sig...

3-29 Programming Example Programs The Err_mngmt subroutine is used to actually read the value of the event status register. Examples 1 through 5 call this subroutine. FNIdentity function When this function is called, it resets the instrument and queries the instrument’s identification string which i...

3-30 Programming Example Programs Example 1. Measure a DFB laser This p rogram measures the p ower and wavelength of a DFB laser. It first sets the Agilent 86120C in the single- acquisition measurement mode. Then, it triggers the Agilent 86120C with the MEASure com-mand to cap ture measurement data ...

3-32 Programming Example Programs Example 2. Measure WDM channels This p rogram measures the multip le laser lines of a WDM system. It measures both the p ower and wavelengths of each line. First, the p ro-gram sets the Agilent 86120C in the single- acquisition measurement mode. Then, it triggers th...

3-34 Programming Example Programs Example 3. Measure WDM channel drift This program measures the drift of channels in a WDM system. It measures drift in both p ower and wavelength of each line. First, the program sets the Agilent 86120C in the continuous- acquisition mea-surement mode. Then, it meas...

3-37 Programming Example Programs Example 4. Measure WDM channel separation This p rogram measures the line sep arations on a WDM system. It mea-sures separation (delta) between power and wavelength of each line using commands from the CALCulate3 subsystem. Refer to the introduction to this section ...

3-41 Programming Example Programs Example 6. Increase a source’s wavelength accuracy This examp le p rogram uses the Agilent 86120C to increase the abso-lute wavelength accuracy of Agilent 8167 A, 8168B, and 8168C Tunable Laser Sources. Essentially, the Agilent 86120C’s accuracy is transferred to th...

3-43 Programming Lists of Commands Lists of Commands Table 3-10. Programming Commands (1 of 5) Command Description Code Codes: S indicates a standard SCPI command. I indicates an instrument specific command. Common Commands *CLS Clears all event registers and the error queue. *ESE Sets the bits in t...

4 Common Commands 4- 3 Measurement Instructions 4- 15 CALCulate1 Subsystem 4- 25 CALCulate2 Subsystem 4- 31 CALCulate3 Subsystem 4- 44 CONFigure Measurement Instruction 4- 74 DISPlay Subsystem 4- 75 FETCh Measurement Instruction 4- 79 HCOPy Subsystem 4- 80 MEASure Measurement Instruction 4- 81 READ ...

4-2 Programming Commands Programming Commands Programming Commands This chap ter is the reference for all Agilent 86120C p rogramming com-mands. Commands are organized by subsystem. Table 4-12. Notation Conventions and Definitions Convention Description < > Angle brackets indicate values enter...

4-3 Programming Commands Common Commands Common Commands Common commands are defined by the IEEE 488.2 standard. They control generic device functions which could be common among many different types of instruments. Common commands can be received and p rocessed by the instrument whether they are se...

4-4 Programming Commands Common Commands <integer> is a mask from 0 to 255. Description The event status enable register contains a mask value for the bits to be enabled in the event status register. A bit set to one (1) in the event status enable register enables the corresp onding bit in the...

4-5 Programming Commands Common Commands *ESR? The *ESR (event status register) query returns the value of the event status register. Syntax *ESR? Description When you read the standard event status register, the value returned is the total of the bit weights of all of the bits that are set to one a...

4-6 Programming Commands Common Commands *IDN? The *IDN? (identification number) query returns a string value which identifies the instrument type and firmware version. Syntax *IDN? Description An *IDN? query must be the last query in a p rogram message. Any queries after the *IDN? query in a p rogr...

4-7 Programming Commands Common Commands *OPC The *OPC (operation complete) command sets the operation complete bit in the event status register when all p ending device op erations have finished. Syntax *OPC*OPC? Description The *OPC? quer y p laces an ASCII “1” in the outp ut queue when all pendin...

4-9 Programming Commands Common Commands *SAV This command saves an instrument state. Syntax *SAV <integer> <integer> range is 1 to 4. Description The following constitutes an instrument state: single/continuous mea-surement mode, power bar on/off, vacuum/STD air mode, normal/fast up dat...

4-10 Programming Commands Common Commands offset, signal- to- noise auto mode on/off, wavelength limit on/off, wave-length limit start, wavelength limit stop, and signal- to- noise average count. *SRE The *SRE (service request enable) command sets the bits in the service request enable register. Syn...

4-15 Programming Commands Measurement Instructions Measurement Instructions Use the measurement instructions documented in this section to per-form measurements and return the desired results to the comp uter. Four basic measurement instructions are used: CONFigure, FETCh, READ, and MEASure. Because...

4-17 Programming Commands Measurement Instructions MEASure{:ARRay | [:SCALar]} :POWer? Returns amplitude values. Syntax :POWer? [<expected_value>[,<resolution>]] Description When used with a :SCALar command, a single value is returned. The disp lay is p laced in the single- wavelength mo...

4-18 Programming Commands Measurement Instructions Examples :CONF:ARR:POW:FETC:ARR:POW?:READ:ARR:POW?:MEAS:ARR:POW? :CONF:SCAL:POW -10 dBm:FETC:SCAL:POW? MAX:READ:SCAL:POW? MIN:MEAS:SCAL:POW? DEF Query Response The following line is an examp le of a returned string when :MEAS:SCAL:POW? MAX is sent: ...

4-19 Programming Commands Measurement Instructions MEASure{:ARRay | [:SCALar]} :POWer:FREQuen-cy? Returns frequency values. Syntax :POWer:FREQuency? [<expected_value>[,<resolution>]] Description When used with a :SCALar command, a single value is returned. The disp lay is p laced in the ...

4-21 Programming Commands Measurement Instructions MEASure{:ARRay | [:SCALar]} :POWer:WAVe-length? Returns wavelength values. Syntax :POWer:WAVelength? [<expected_value>[,<resolution>]] Description When used with a :SCALar command, a single value is returned. The disp lay is p laced in t...

4-22 Programming Commands Measurement Instructions <resolution> Constants MAXimum 0.01 resolution (fast update) MINimum 0.001 resolution (normal) DEFault Current resolution Examples :CONF:ARR:POW:WAV DEF, MAX:FETC:ARR:POW:WAV? DEF, MIN:READ:ARR:POW:WAV?:MEAS:ARR:POW:WAV? :CONF:SCAL:POW:WAV 130...

4-23 Programming Commands Measurement Instructions MEASure{:ARRay | [:SCALar]} :POWer:WNUMber? Returns a wave number value. Syntax :POWer:WNUMber? [<expected_value>[,<resolution>]] Description When used with a :SCALar command, a single value is returned. The disp lay is p laced in the si...

4-24 Programming Commands Measurement Instructions <resolution> Constants MAXimum 0.01 resolution (fast update) MINimum 0.001 resolution (normal) DEFault Current resolution Examples :CONF:ARR:POW:WNUM DEF, MAX:FETC:ARR:POW:WNUM? DEF, MIN:READ:ARR:POW:WNUM?:MEAS:ARR:POW:WNUM?:CONF:SCAL:POW:WNUM...

4-25 Programming Commands CALCulate1 Subsystem CALCulate1 Subsystem Use the CALCulate1 commands to quer y uncorrected frequency- sp ec- trum data. In NORMAL measurement up date mode, 15,047 values are returned. If the Agilent 86120C is set for FAST measurement up date mode (low resolution), 7,525 va...

4-26 Programming Commands CALCulate1 Subsystem DATA? Queries uncorrected frequency- sp ectrum data of the inp ut laser line. Syntax :CALCulate1:DATA? Attribute Summary Preset State: not affected SCPI Compliance: standardQuery Only Description The returned values are proportional to squared Watts (li...

4-27 Programming Commands CALCulate1 Subsystem When NORMAL measurement mode is selected, the uncorrected fre- quency domain data consists of 64K values. Only the frequency domain data corresp onding to 1270–1650 wavelength (in vacuum) is returned (15,047 values). In FAST measurement mode, the data c...

4-29 Programming Commands CALCulate1 Subsystem TRANsform:FREQuency:POINts Sets the size of the fast Fourier transform (FFT) p erformed by the instrument. Syntax :CALCulate1:TRANsform:FREQuency:POINts{?| {<integer> | MINimum | MAXimum}} < integer > Sets FFT size. Must be either 15,047 or ...

4-30 Programming Commands CALCulate1 Subsystem Query Response For normal update: +15,047 For fast update: +7,525

4-31 Programming Commands CALCulate2 Subsystem CALCulate2 Subsystem Use the CALCulate2 commands to quer y corrected values frequency- spectrum data. The commands in this subsystem have the following command hierar-chy: :CALCulate2 :DATA? :PEXCursion:POINts? :PTHReshold:PWAVerage [:STATe] :WLIMit [:S...

4-32 Programming Commands CALCulate2 Subsystem DATA? Queries the corrected peak data of the input laser line. Syntax :CALCulate2:DATA? {FREQuency | POWer | WAVelength | WNUMber} Constant Description FREQuency Queries the array of laser-line frequencies after the peak search is completed. If :CALC2:P...

4-33 Programming Commands CALCulate2 Subsystem When there is no inp ut signal, the POWer quer y returns –200 dBm; the WAVelength quer y returns 100 nm (1.0E–7). PEXCursion Sets the peak excursion limit used by the Agilent 86120C to determine valid laser line peaks. Syntax :CALCulate2:PEXCursion{?| {...

4-34 Programming Commands CALCulate2 Subsystem POINts? Queries the number of points in the data set. Syntax :CALCulate2:POINts? Attribute Summary Preset State: unaffected *RST State: unaffectedSCPI Comp liance: instrument sp ecificQuery Only Description This is the number of p oints that will be ret...

4-35 Programming Commands CALCulate2 Subsystem DEFault 10 dB Attribute Summary Non- sequential command Preset State: 10 dB *RST State: 10 dBSCPI Comp liance: instrument sp ecific Description A laser line is identified as a valid p eak if its amp litude is above the maximum amp litude minus the p eak...

4-37 Programming Commands CALCulate2 Subsystem WLIMit[:STATe] Turns wavelength limiting on and off. Syntax :CALCulate2:WLIMit[:STATe]{?| {ON | OFF | 1 | 0}} Attribute Summary Non- sequential command Preset State: on *RST State: onSCPI Comp liance: instrument sp ecific Description When this function ...

4-38 Programming Commands CALCulate2 Subsystem WLIMit:STARt:FREQuency Sets the start frequency for the wavelength limit range. Syntax :CALCulate2:WLIMit:STARt:FREQuency {?|{<real> | MINimum | MAXimum }} < real > is a frequency value that is within the following limits: Constant Descripti...

4-40 Programming Commands CALCulate2 Subsystem WLIMit:STARt:WNUMber Sets the starting wavenumber for the wavelength limit range. Syntax :CALCulate2:WLIMit:STARt:WNUMber {?|{<real> | MINimum | MAXimum}} < real > is a wavenumber value that is within the following limits: Constant Descripti...

4-41 Programming Commands CALCulate2 Subsystem WLIMit:STOP:FREQuency Sets the stopping frequency for the wavelength limit range. Syntax :CALCulate2:WLIMit:STOP:FREQuency {?|{<real> | MINimum | MAXimum }} < real > is a frequency value that is within the following limits: Constant Descript...

4-42 Programming Commands CALCulate2 Subsystem WLIMit:STOP[:WAVelength] Sets the stop p ing wavelength for the wavelength limit range. Syntax :CALCulate2:WLIMit:STOP[:WAVelength] {?|{<real> | MINimum | MAXimum }} < real > is a wavelength value that is within the following limits: Constan...

4-43 Programming Commands CALCulate2 Subsystem WLIMit:STOP:WNUMber Sets the stop p ing wavenumber for the wavelength limit range. Syntax :CALCulate2:WLIMit:STOP:WNUMber {?|{<real> | MINimum | MAXimum }} < real > is a wavenumber value that is within the following limits: Constant Descript...

4-44 Programming Commands CALCulate3 Subsystem CALCulate3 Subsystem Use the CALCulate3 commands to p erform delta, drift, signal- to- noise, and Fabr y- Perot measurements. The commands in this subsystem have the following command hierarchy: :CALCulate3 :ASNR :CLEar:COUNt[:STATe] :DATA? :DELTa :POWe...

4-50 Programming Commands CALCulate3 Subsystem DELTa:POWer[:STATe] Turns the delta- power measurement mode on and off. Syntax :CALCulate3:DELTa:POWer[:STATe]{?| {ON | OFF | 1 | 0}} Attribute Summary Preset State: off *RST State: offSCPI Comp liance: instrument sp ecific Description When this state i...

4-51 Programming Commands CALCulate3 Subsystem DELTa:REFerence:FREQuency Selects the reference laser line for DELTa calculations. Syntax :CALCulate3:DELTa:REFerence:FREQuency{?| {<real> | MINimum | MAXimum}} <real> is a frequency value that is within the following limits: Constant Descri...

4-52 Programming Commands CALCulate3 Subsystem DELTa:REFerence[:WAVelength] Selects the reference laser line for DELTa calculations. Syntax :CALCulate3:DELTa:REFerence[:WAVelength]{?| {<real> | MINimum | MAXimum}} <real> is a wavelength value that is within the following limits: Constant...

4-53 Programming Commands CALCulate3 Subsystem DELTa:REFerence:WNUMber Selects the reference laser line for delta calculations. Syntax :CALCulate3:DELTa:REFerence:WNUMber{?| {<real> | MINimum | MAXimum}} <real> is a wave number value that is within the following limits: Constant Descript...

4-54 Programming Commands CALCulate3 Subsystem DELTa:WAVelength[:STATe] Turns the delta wavelength measurement mode on and off. Syntax :CALCulate3:DELTa:WAVelength[:STATe]{?| {ON | OFF | 1 | 0}} Attribute Summary Preset State: off *RST State: offSCPI Comp liance: instrument sp ecific Description Whe...

4-55 Programming Commands CALCulate3 Subsystem DELTa:WPOWer[:STATe] Turns the delta wavelength and power measurement mode on and off. Syntax :CALCulate3:DELTa:WPOWer[:STATe]{?| {ON | OFF | 1 | 0}} Attribute Summary Preset State: off *RST State: offSCPI Comp liance: instrument sp ecific Description W...

4-59 Programming Commands CALCulate3 Subsystem DRIFt:PRESet Turns off all the drift states for DIFFerence, MAXimum, MINimum, and REFerence. Syntax :CALCulate3:DRIFt:PRESet Attribute Summary Preset State: unaffected by *RST State: unaffected bySCPI Comp liance: instrument sp ecificCommand Only Descri...

4-60 Programming Commands CALCulate3 Subsystem DRIFt:REFerence[:STATe] Turns on and off the drift reference state. Syntax :CALCulate3:DRIFt:REFerence[:STATe]{?| {ON | OFF | 1 | 0}} Attribute Summary Preset State: off *RST State: offSCPI Comp liance: instrument sp ecific Description When this command...

4-61 Programming Commands CALCulate3 Subsystem DRIFt[:STATe] Turns on and off the drift measurement calculation. Syntax :CALCulate3:DRIFt[:STATe]{?| {ON | OFF | 1 | 0}} Attribute Summary Preset State: off *RST State: offSCPI Comp liance: instrument sp ecific Description When the drift mode is first ...

4-62 Programming Commands CALCulate3 Subsystem FPERot[:STATE] Turns on and off the Fabr y- Perot measurement mode. Syntax :CALCulate3:FPERot[:STATE] {? | {ON | OFF | 1 | 0}} Attribute Summary Preset State: off *RST State: offSCPI Comp liance: instrument sp ecific Description When the state is ON, th...

4-64 Programming Commands CALCulate3 Subsystem FPERot:MODE:SPACing? Queries the mode spacing data of the selected modes. Syntax :CALCulate3:FPERot:MODE:SPACing{[:WAVelength] | :FREQuency | :WNUMber}? Argument Description WAVelength Returns the mode spacing wavelength of the selected modes. FREQuency...

4-65 Programming Commands CALCulate3 Subsystem FPERot:PEAK? Queries the peak data of the selected modes. Syntax :CALCulate3:FPERot:PEAK{[:WAVelength] | :FREQuency | :WNUMber | :POWer{[:DBM]|:WATTs}}? Argument Description WAVelength Returns the peak wavelength of the selected modes. FREQuency Returns...

4-66 Programming Commands CALCulate3 Subsystem FPERot:POWer? Queries the total power data of the selected modes. Syntax :CALCulate3:FPERot:POWer{[:DBM]|:WATTs}}? Argument Description DBM Returns the total power in dBm. WATTs Returns the total power in watts. Example Query Response dBm ( DBM ) –4.468...

4-67 Programming Commands CALCulate3 Subsystem FPERot:SIGMa? Queries the sigma data of the selected modes. Syntax :CALCulate3:FPERot:SIGMa{[:WAVelength] | :FREQuency | :WNUMber}? Argument Description WAVelength Returns the sigma wavelength of the selected modes. FREQuency Returns the sigma frequency...

4-68 Programming Commands CALCulate3 Subsystem POINts? Queries the number of points in the data set. Syntax :CALCulate3:POINts? Attribute Summary Preset State: unaffected by RST State: unaffected bySCPI Comp liance: instrument sp ecificQuery Only Description The value returned is the number of point...

4-70 Programming Commands CALCulate3 Subsystem SNR:REFerence:FREQuency Enters a frequency that can be used for the noise measurement refer-ence in signal- to- noise calculations. Syntax :CALCulate3:SNR:REFerence:FREQuency{?| {<real> | MINimum | MAXimum}} <real> is a frequency value that ...

4-74 Programming Commands CONFigure Measurement Instruction CONFigure Measurement Instruction For information on the CONFigure measurement instruction, refer to “Measurement Instructions” on page 4- 15 .

4-75 Programming Commands DISPlay Subsystem DISPlay Subsystem The commands in this subsystem have the following command hierar-chy: :DISPlay :MARKer: :MAXimum :LEFT :NEXT :PREVious :RIGHt [:WINDow] :GRAPhics :STATe

4-76 Programming Commands DISPlay Subsystem MARKer:MAXimum Sets the marker to the laser line that has the maximum p ower. Syntax :DISPlay:MARKer:MAXimum Attribute Summary Preset State: marker set to maximum- p ower laser line *RST State: marker set to maximum- p ower laser lineSCPI Comp liance: inst...

4-79 Programming Commands FETCh Measurement Instruction FETCh Measurement Instruction For information on the FETCh measurement instruction, refer to “Mea- surement Instructions” on page 4- 15 .

4-80 Programming Commands HCOPy Subsystem HCOPy Subsystem Use the command in this subsystem to p rint the disp layed measure-ment results to a p rinter. This subsystem has the following command hierarchy: :HCOPy [:IMMediate] [:IMMediate] Prints measurement results on a p rinter. Syntax :HCOPy:IMMedi...

4-81 Programming Commands MEASure Measurement Instruction MEASure Measurement Instruction For information on the MEASure measurement instruction, refer to “Measurement Instructions” on page 4- 15 .

4-82 Programming Commands READ Measurement Instruction READ Measurement Instruction For information on the READ measurement instruction, refer to “Mea- surement Instructions” on page 4- 15 .

4-83 Programming Commands SENSe Subsystem SENSe Subsystem Use the SENSe commands to correct measurement results for elevation above sea level and to select between measurements in air or vacuum. You can also enter an amp litude offset. The commands in this sub-system have the following command hiera...

4-84 Programming Commands SENSe Subsystem CORRection:DEVice Selects the wavelength measurement algorithm. Syntax :SENSe:CORRection:[DEVice]{?| {NARRow | BROad}} Constant Description NARRow Selects wavelength measurements for narrowband devices such as DFB lasers and modes of FP lasers. BROad Selects...

4-85 Programming Commands SENSe Subsystem CORRection:ELEVation Sets the elevation value used by the instrument to comp ensate for air dispersion. Syntax :SENSe:CORRection:ELEVation{?| {<integer> | MINimum | MAXimum}} <integer> is the altitude in meters. Constant Description MINimum 0 m M...

4-86 Programming Commands SENSe Subsystem CORRection:MEDium Sets the Agilent 86120C to return wavelength readings in a vacuum or standard air. Syntax :SENSe:CORRection:MEDium{?| {AIR | VACuum}} Argument Description AIR Selects wavelength values in standard air. VACuum Selects wavelength values in a ...

4-87 Programming Commands SENSe Subsystem CORRection:OFFSet[:MAGNitude] Enters an offset for amp litude values. Syntax :SENSe:CORRection:OFFSet:MAGNitude{?| {<real> | MINimum | MAXimum}} <real> is the logarithmic units in dB. Constant Description MINimum − 40.0 dB MAXimum 40.0 dB Attribu...

4-88 Programming Commands SENSe Subsystem DATA? Queries the time domain samp les of the inp ut laser line. Syntax :SENSe:DATA? Attribute Summary Preset State: none SCPI Comp liance: instrument sp ecificQuery Only Description Be p rep ared to p rocess a large amount of data when this query is sent. T...

4-90 Programming Commands STATus Subsystem STATus Subsystem Use the commands in this subsystem to control the Agilent 86120C’s status- reporting structures. These structures provide registers that you can use to determine if certain events have occurred. The commands in this subsystem have the follo...

4-91 Programming Commands STATus Subsystem {OPERation | QUEStionable}:CONDition? Queries the value of the questionable or operation condition register. Syntax :STATus:{OPERation | QUEStionable}:CONDition? Query Response 0 to 32767 Attribute Summary Preset State: none *RST State: noneSCPI Compliance:...

4-97 Programming Commands SYSTem Subsystem SYSTem Subsystem The commands in this subsystem have the following command hierar-chy: :SYSTem :ERRor? :HELP :HEADers? :PRESet :VERSion?

4-98 Programming Commands SYSTem Subsystem ERRor Queries an error from the error queue. Syntax :SYSTem:ERRor? Attribute Summary Preset State: none *RST State: noneSCPI Compliance: standardQuery Only Description The Agilent 86120C has a 30 entry error queue. The queue is a first-in, first- out buffer...

4-99 Programming Commands SYSTem Subsystem HELP:HEADers? Queries a listing of all the remote p rogramming commands available for the Agilent 86120C. Syntax :SYSTem:HELP:HEADers? Attribute Summary Preset State: none *RST State: noneSCPI Comp liance: instrument sp ecificQuery Only Description The retu...

4-100 Programming Commands SYSTem Subsystem PRESet Performs the equivalent of p ressing the front- p anel PRESET key. Syntax :SYSTem:PRESet Attribute Summary Preset State: none *RST State: noneSCPI Compliance: standardCommand Only Description The instrument state is set according to the settings sho...

4-102 Programming Commands SYSTem Subsystem VERSion Queries the version of SCPI that the Agilent 86120C comp lies with. Syntax :SYSTem:VERSion Attribute Summary Preset State: none *RST State: noneSCPI Compliance: standardQuery Only Description The SCPI version used in the Agilent 86120C is 1995.0. T...

4-103 Programming Commands TRIGger Subsystem TRIGger Subsystem The SCPI definition defines the TRIGger subsystem to include ABORt, ARM, INITiate, and TRIGger commands. The Agilent 86120C has no ARM or TRIGger commands. The commands in this subsystem have the following command hierar-chy: ABORtINITia...

ABORt Halts the current measurement sequence and places the instrument in the idle state. Syntax :ABORt Attribute Summary Preset State: not affected SCPI Compliance: standardCommand Only Description If the instrument is configured for continuous measurements, a new measurement sequence will begin. O...

4-105 Programming Commands TRIGger Subsystem INITiate:CONTinuous Selects single or continuous measurement acquisition. Syntax :INITiate:CONTinuous{?| {ON | OFF | 1 | 0}} Attribute Summary Non- sequential command Preset State: on *RST State: offSCPI Compliance: standard Description When on is sp ecif...

4-106 Programming Commands TRIGger Subsystem INITiate[:IMMediate] Initiates a new measurement sequence. Syntax :INITiate:IMMediate Attribute Summary Non- sequential command Preset State: none SCPI Compliance: standardCommand Only Non-sequential command Always use an *OPC? query or a *WAI command to ...

4-107 Programming Commands UNIT Subsystem UNIT Subsystem The only command p rovided in this subsystem is the POWer command as shown in the following command hierarchy: :UNIT [:POWer] [:POWer] Sets the p ower units to watts (linear) or dBm (logarithmic). Syntax :UNIT[:POWer]{?| {W | DBM}} Attribute S...

5 Test 1. Absolute Wavelength Accuracy 5- 3 Test 2. Sensitivity 5- 4 Test 3. Polarization Dep endence 5- 5 Test 4. Op tical Inp ut Return Loss 5- 6 Test 5. Amplitude Accuracy and Linearity 5- 9 Performance Tests

5-2 Performance Tests Performance Tests Performance Tests The procedures in this chapter test the Agilent 86120C’s performance using the specifications listed in Chapter 6, “Specifications and Regula- tory Information” as the p erformance standard. All of the tests are done manually without the aid ...

5-3 Performance Tests Test 1. Absolute Wavelength Accuracy Test 1. Absolute Wavelength Accuracy Description Wavelength accuracy is verified using traceable light sources such as the following devices: • Stable lasers• Gas lamps• HeNe gas lasers C A U T I O N Do not exceed +18 dBm source power. The A...

5-4 Performance Tests Test 2. Sensitivity Test 2. Sensitivity Description Sensitivity is verified using the following devices: • Optical power meter• Optical attenuator• 1310 nm and 1550 nm lasers (>0 dBm output power) C A U T I O N Do not exceed +18 dBm source power. The Agilent 86120C’s input c...

5-5 Performance Tests Test 3. Polarization Dependence Test 3. Polarization Dependence Description Polarization Dependence is verified using the following devices: • 1310 nm and 1550 nm DFB lasers• Optical attenuator• Agilent 11896A polarization controller C A U T I O N Do not exceed +18 dBm source p...

5-6 Performance Tests Test 4. Optical Input Return Loss Test 4. Optical Input Return Loss Description Inp ut return loss is verified using the following devices: • Agilent 8153A lightwave multimeter• Agilent 81553SM 1550 nm Fabry- Perot laser, SM 9/125 µ m source module • Agilent 81534A return loss ...

5-7 Performance Tests Test 4. Optical Input Return Loss and Regulator y Information” . Procedure Option 022 instruments (angled contacting connectors) 1 Turn the source module’s outp ut off. 2 Connect a single- mode patchcord between the source module’s optical outp ut and the return loss module’s I...

5-8 Performance Tests Test 4. Optical Input Return Loss FC/APC patchcord loss The effect of having loss in the FC/APC patchcord 1 to 2 connector pair is to under measure the return loss by twice the FC/APC patchcord 1 to 2 loss. For example, if this connector pair loss is 0.5 dB, then the actual ret...

5-9 Performance Tests Test 5. Amplitude Accuracy and Linearity Test 5. Amplitude Accuracy and Linearity Equipment Amp litude linearity is p erformed using the following devices: • 1550 nm DFB lasers• Optical attenuator• Agilent 11896A polarization controller• Optical power meter Procedure 1 Turn on ...

6-2 Specifications and Regulatory Information Specifications and Regulatory Information Specifications and Regulatory Information This chapter lists specification and characteristics of the instrument. The dis-tinction between these terms is described as follows: • Specifications describe warranted ...

6-3 Specifications and Regulatory Information Definition of Terms Definition of Terms Wavelength Range refers to the allowable wavelength range of the optical input signal. Absolute accuracy indicates the maximum wavelength error over the allowed environmental conditions. The wavelength accuracy is ...

6-4 Specifications and Regulatory Information Definition of Terms of one laser line. Polarization Dependence indicates the maximum displayed power variation as the polarization of the input signal is varied. Display Resolution indicates the minimum incremental change in displayed power. Sensitivity ...

6-5 Specifications and Regulatory Information Specifications—NORMAL Update Mode Specifications—NORMAL Update Mode Each laser line is assumed to have a linewidth (including modulation side-bands) of less than 5 GHz.All specifications apply when the instrument is in the following modes: • NORMAL up da...

6-6 Specifications and Regulatory Information Specifications—NORMAL Update Mode Amplitude Calibration accuracy at calibration wavelengths ± 0.5 dB (at 1310 and 1550 nm ± 30 nm) Flatness, ± 30 nm from any wavelength 1270-1600 nm (characteristic) ± 0.2 dB 1270-1650 nm (characteristic) ± 0.5 dB Lineari...

6-7 Specifications and Regulatory Information Specifications—NORMAL Update Mode Input Return Loss With straight contactconnectors 35 dB With angled contact connectors (Option 022) 50 dB Measurement Cycle Time Normal update mode (characteristic) 1.0 s (1 measurement-per-second) Measurement Applicatio...

6-8 Specifications and Regulatory Information Specifications—FAST Update Mode Specifications—FAST Update Mode Each laser line is assumed to have a linewidth (including modulation side-bands) of less than 10 GHz.All specifications apply when the instrument is in the following modes: • FAST up date mo...

6-11 Specifications and Regulatory Information Operating Specifications Operating Specifications Operating Specifications Use indoor Power: 70 W max Voltage 100 / 115 / 230 / 240 V ~ Frequency 50 / 60 Hz Altitude Up to 2000 m (~ 6600 ft) Operating temperature 0 ° C to +55 ° C Maximum relative humidi...

6-12 Specifications and Regulatory Information Laser Safety Information Laser Safety Information The light sources specified by this user guide are classified according to IEC 60825-1 (2001).The light sources comply with 21 CFR 1040.10 except for deviations pursuant to Laser Notice No. 50, dated 200...

6-13 Specifications and Regulatory Information Compliance with Canadian EMC Requirements Compliance with Canadian EMC Requirements This ISM device complies with Canadian ICES-001.Cet appareil ISM est conforme à la norme NMB-001 du Canada. Notice for Germany: Noise Declaration Acoustic Noise Emission...

6-14 Specifications and Regulatory Information Declaration of Conformity Declaration of Conformity

6-15 Specifications and Regulatory Information Product Overview Product Overview Front view of instrument Rear view of instrument

7 Instrument Preset Conditions 7-2 Menu Maps 7-4 Error Messages 7-11 Front-Panel Fiber-Optic Adapters 7-17 Power Cords 7-18 Agilent Technologies Service Offices 7-18 Reference

7-4 Reference Menu Maps Menu Maps This section provides menu maps for the Agilent 86120C softkeys. The maps show which softkeys are displayed after pressing a front-panel key; they show the relation-ship between softkeys. The softkeys in these maps are aligned vertically instead of horizontally as o...

7-6 Reference Menu Maps Display Avg WL Menu There is no menu associated with this key. Measurement Cont Menu There is no menu associated with this key. Display List by Power Menu

7-7 Reference Menu Maps Display List by WL Menu Delta On Menu

7-8 Reference Menu Maps Delta Off Menu Display Peak WL and System Preset Menus Measurement Single Menu There is no menu associated with this key.

7-11 Reference Error Messages Error Messages In this section, you’ll find all the error messages that the Agilent 86120C can display on its screen. Table 5-23 on page 7-11 lists all instrument-specific errors. Table 5-24 on page 7-14 lists general SCPI errors. Table 5-23. Instrument Specific Error M...

7-18 Reference Power Cords Power Cords Agilent Technologies Service Offices Plug Type Cable Part No. Country 250V 8120-1351 United Kingdom, Cyprus, Nigeria, Zimbabwe, Singapore 250V 8120-1369 Australia, New Zealand, China 250V 8120-1689 East and West Europe, Saudi Arabia, So. Africa, India (unpolari...

7-19 Reference Agilent Technologies Service Offices Before returning an instrument for service, call the Agilent Technologies Instrument Support Center at +1 (877) 447 7278 , visit the Test and Measurement Web Sites by Country page at http://www.agilent.com/comms/techsupport, select your country and...

Index Index-1 ASNR , 48 Numerics 1 nm annotation , 27, 30 A ABORt programming command , 104 ABORT softkey , 39 ac power cables , 6 adapters, fiber optic , 17 adding parameters , 25 address. See GPIB address Agilent Technologies offices , 18 air, measurements in , 37 AM modulation , 15, 34 amplitude ...

 Agilent Technologies GmbH 2004 Printed in Germany August 2004 Second edition, August 2004 86120-90C03 www.agilent.com Agilent Technologies