Download
Share
Print this page
HP 71450B Quick Reference
  1. Manuals
  2. Brands
  3. HP Manuals
  4. Measuring Instruments
  5. 71450B
  6. Quick reference
HP 71450B Quick Reference

HP 71450B Quick Reference

Optical spectrum analyzer
Hide thumbs

Advertisement

Quick Links

Download this manual
Quick Reference
HP 71450B/1B/2B Optical
Spectrum Analyzers
ABCDE
Printed in USA
www.valuetronics.com

Advertisement

loading
Need help?

Need help?

Do you have a question about the 71450B and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for HP 71450B

Summary of Contents for HP 71450B

  • Page 1 Quick Reference HP 71450B/1B/2B Optical Spectrum Analyzers ABCDE Printed in USA www.valuetronics.com...
  • Page 2 HP Part No. 70950-90052 Edition 1 Printed in USA June 1995 1400 Fountaingrove Parkway, Santa Rosa, CA 95403-1799, USA The information contained in this document is subject to Notice. change without notice. Hewlett-Packard makes no warranty of any kind with regard to this material, including but not limited to, the implied warranties of merchantability and tness for a particular purpose.
  • Page 3 www.valuetronics.com...
  • Page 4 www.valuetronics.com...

  • Page 5: Table Of Contents

    Contents Menu Maps Menu Maps Amptd Menu . BW, Swp Menu . Marker Menu . Misc Menu . State Menu Traces Menu 1-10 Waveln Menu . 1-11 USER Menu's DFB Advanced Measurement Program 1-12 USER Menu's FP Advanced Measurement Program . 1-13 USER Menu's LED Advanced Measurement Program...
  • Page 6 www.valuetronics.com...

  • Page 7: Menu Maps

    Menu Maps Menu Maps www.valuetronics.com...
  • Page 8 Menu Maps The menu maps that are in this guide graphically represent the MENU USER softkey menus that are located under the and the keys. Maps for each left-side softkey are shown in alphabetical order. Menu maps contain the following features: Menu Maps www.valuetronics.com...

  • Page 9: Amptd Menu

    Menu Maps Amptd Menu Menu Maps www.valuetronics.com...

  • Page 10: Bw, Swp Menu

    BW, Swp Menu Menu Maps www.valuetronics.com...

  • Page 11: Marker Menu

    Marker Menu Menu Maps www.valuetronics.com...

  • Page 12: Misc Menu

    Misc Menu Menu Maps www.valuetronics.com...
  • Page 13 Misc Menu Misc menu (cont'd) Menu Maps www.valuetronics.com...

  • Page 14: State Menu

    State Menu Menu Maps www.valuetronics.com...
  • Page 15 State Menu State menu (cont'd) Menu Maps www.valuetronics.com...

  • Page 16: Traces Menu

    Traces Menu 1-10 Menu Maps www.valuetronics.com...

  • Page 17: Waveln Menu

    Waveln Menu Menu Maps 1-11 www.valuetronics.com...

  • Page 18: User 5 Menu's Dfb Advanced Measurement Program

    USER Menu's DFB Advanced Measurement Program 1-12 Menu Maps www.valuetronics.com...

  • Page 19: User 5 Menu's Fp Advanced Measurement Program

    USER Menu's FP Advanced Measurement Program Menu Maps 1-13 www.valuetronics.com...

  • Page 20: User 5 Menu's Led Advanced Measurement Program

    USER Menu's LED Advanced Measurement Program 1-14 Menu Maps www.valuetronics.com...

  • Page 21: User 5 Menu's Pdl Advanced Measurement Program

    USER Menu's PDL Advanced Measurement Program This program is available on HP 71451B (HP 70951B) instruments as Option 003. Menu Maps 1-15 www.valuetronics.com...
  • Page 22 www.valuetronics.com...

  • Page 23: Optical Spectrum Analyzer Functions

    (or nearly the same) function has also been provided. For more detailed information on softkeys or hardkeys, refer to the HP 71450B/1B/2B Optical Spectrum Analyzer Reference Backspaces the cursor while entering text or displays previous softkey menus.
  • Page 24 Af%-fA-B+DL Subtracts trace B from trace A point by point, adds the value of the display line, then stores the results in trace A. Related command: AMBPL Af%-fA-C Subtracts trace C from trace A point by point, then stores the results in trace A. Related command: AMC Af%-fA-C+DL Subtracts trace C from trace A point by point, adds the value of the display line, then stores the results in trace A.
  • Page 25 ACT Front-panel indicator light that turns on whenever the optical spectrum analyzer is being displayed. ACTIVEfMARKER Selects the active marker. adcfsync Presents a menu for synchronizing an external signal with pulse modulation capability with the optical spectrum analyzer's analog-to-digital converter. ADC SYNC OUT Rear-panel output connector that allows the user to synchronize an event, external to the instrument to the instrument...
  • Page 26 Related command: AUTOMEAS AUTOfSCALE Automatically scales the HP 71451B Option 003 only amplitude of the displayed signal during a polarization dependent loss (PDL) measurement. Related command: PDLSCALE Optical Spectrum Analyzer Functions...
  • Page 27 AUTOPTSfALIGN Runs an automatic alignment routine for the ber positioner's tracking table. Related command: ALIGN AUTORNGfOnfOff Turns automatic ranging on and o . Related command: AUTORNG AUTZEROfOnfOff Turns o zeroing between traces. Related command: AUTZERO Bf%-fB-DL Subtracts the value of the display line from trace B, then stores the result in trace B.
  • Page 28 CALCf+fDISPLAY * Calculates HP 71451B Option 003 only and displays the peak-to-peak polarization-dependent loss. Related command: PDLCALC CALCffOnfOff Turns the calculation of advanced-measurement program results on and o . CANCEL Cancels the various memory-erase operations. catalogf&fMSI Displays the contents of the currently selected user memory.
  • Page 29 Erases the contents of the limit-line table after CONFIRMfDELETE has been pressed. DELETEfALL Erases memory. CONFIRMfERASE Resumes operation of a halted program. CONT Sweeps the measurement range when the trigger CONTfSWEEP conditions are met. Related command: CONTS Presents a menu for currentfsource Option 001 only controlling the pulsed current source.
  • Page 30 PDL DEV? Turns on the DFB advanced-measurement program. Related command: DFB Presents a menu for controlling system-level functions such DISPLAY as: HP-MSIB addressing, communication, and con guration. DISPOSEfUSER Erases a le containing user-menu softkeys from memory. distribfmenu Displays a menu for selecting statistical distributions.
  • Page 31 ERASEfALL Erases all internal user memory. erasefrestart Presents a menu for erasing internal memory. Front-panel indicator light that turns on whenever the optical spectrum analyzer has a problem. executefDLP Lists all DLPs stored in internal memory alphabetically. EXIT Turns o an advanced-measurement program. Related command: DFB , FP , LED , and PDLEXIT Selects external triggering.
  • Page 32 INSERTfor... SELECTfCHAR Displays the softkey for inserting characters into text. INSTR Assigns the HP 70004A display's front-panel keys to selected master modules. instrfmodes Selects the type of instrument operations performed by HP 71451A instruments. Related command: INSTMODE 2-10 Optical Spectrum Analyzer Functions...
  • Page 33 Resets the optical spectrum analyzer to a known INSTR PRESET preset state. Related command: IP INTfWINfOnfOff Displays the trace points used to calculate FWHM and power. INTEGRTfFROMfPK Selects integration points based on amplitude level from peak response. integrtfmenu Accesses a menu that selects the trace points for calculating FWHM and power.
  • Page 34 Stores a lower-limit line as amplitude-correction values for a speci c wavelength range. Related command: LIMTOCOR Front-panel indicator light that turns on when the optical spectrum analyzer is receiving data or instructions over HP-IB. MANUALfALIGN Performs an at speci ed AUTO ALIGN wavelengths.
  • Page 35 Related command: SRINPUT NORMAL MONOCHROMATOR INPUT Front-panel input connector that receives the input light for the HP 71451B optical spectrum analyzer. OPTICAL INPUT On an HP 71450B/2B, this connector is labeled MONOCHROMATOR OUTPUT Front-panel output connector serving as the external output of the monochromator on the HP 71451B optical spectrum analyzer.
  • Page 36 OPTICAL INPUT Front-panel input connector that receives the input light for the HP 71450B/2B optical spectrum analyzer. On an HP 71451B, this connector is labeled MONOCHROMATOR INPUT . OPTIMIZ Ensures the DFB advanced-measurement program locates the laser's side modes.
  • Page 37 PHOTOfDIODE Selects instrument operation for testing photo-diode detectors. PHOTODETECTOR INPUT Front-panel external input connector for the photodetector on the HP 71451B optical spectrum analyzer. PITfEXCURSN De nes a pit for marker pit-search functions. Related command: MKPITX pit,minfmarkers Presents a menu of functions for locating signal pits and the minimum trace point.
  • Page 38 POWERONfIP Speci es that the instrument be placed in its preset state whenever it is turned on. Related command: POWERON POWERONfLAST Speci es the instrument's state immediately after being turned on. Related command: POWERON poweronfmenu Presents a menu for selecting the instrument's state after it is turned on.
  • Page 39 Moves a marker right on the display to the next signal pit. Related command: MKPK NRPIT Front-panel indicator light that turns on when the optical spectrum analyzer is being controlled by a computer over the HP-IB. ROMfVERSION Displays the date code of the read-only memory (ROM).
  • Page 40 SENS SENSfAutoMan Sets the sensitivity. Related command: SENS serivce Presents a menu for obtaining knowledge about system parameters, module level parameters, and module HP-MSIB addresses. SERVICEfREQUEST Enables the service request mode. showfstates Displays a menu for obtaining current instrument-state information.
  • Page 41 Changes the wavelength span set by the automatic SPANfAutoMan measurement routine. Related command: AUTOMSP Front-panel indicator light that turns on when the optical spectrum analyzer has requested service from a computer over HP-IB. Sets the start wavelength. START Sets the start wavelength. Related command: STARTWL...
  • Page 42 Displays a menu used for writing messages on the display. Related command: TITLE Front-panel indicator light that turns on when the optical spectrum analyzer is sending data or instructions over HP-IB. Moves the wavelength at the marker to center screen. TO CENTER...
  • Page 43 TRIGGERfFREE Selects free-run triggering. Related command: TM FREE TRNSZLKfOnfOff Locks the optical spectrum analyzer's internal transimpedance ampli er. Related command: TRNSZLOCK type Selects the type of lines used for limit lines. Related command: LIMITYPE unitsfmenu Selects the amplitude scale's units. UPPER-&fAMPCOR Stores an upper limit line as amplitude- correction values for a speci c wavelength range.
  • Page 44 VIEWfC Displays trace data that has been temporarily stored. Related command: VIEW WfLIGHTfALIGN Runs an automatic alignment for the ber positioner's tracing table using a broad spectra light source (600 nm to 1700 nm). Related command: ALIGN WARNINGfOnfOff Displays or hides warning messages. Related command: WARNCTRL WATT Selects linear amplitude units in watts.

  • Page 45: Programming Commands

    The following pages are a compilation of all current programming commands for the optical spectrum analyzer. More information on each command can be found in the HP 71450B/1B/2B Optical Spectrum Analyzer Programmer's Guide This reference is intended for use by the experienced optical spectrum analyzer programmer.

  • Page 46: Notation Conventions

    Notation Conventions The following type styles and symbols found in this guide indicate the following: BOLD TYPE All characters appearing in bold type are keywords and must appear exactly as shown. CAPITAL All characters which are capital letters are LETTERS secondary keywords and appear within the keyword syntax.

  • Page 47: Syntax Conventions

    Syntax Conventions < > < >< > A-block data eld < > < >< > A-block data format < > amplitude unit < > < > f j g character < > character string < > command list < > compatible function prede ned function...
  • Page 48 Note: The underscore used as the last character in a FUNCDEF label < causes the optical spectrum analyzer to automatically use the > label as the title for a user-de ned key. < > < > j< key number is de ned as integer from 1 to 14 trace...
  • Page 49 measurement units for logarithmic trace data; 0 to 10000 measurement units for linear trace data. < > user-de ned function is de ned as 1 to 12 characters de ned by the FUNCDEF or ACTDEF command. Choice of characters is A through Z, 0 through 9, and underscore ( ); rst character must be a letter and numbers must be preceded by the underscore.
  • Page 50 Functional Index Active-Trace Processing Functions B + DL AMBPL AMBMC C + DL AMBMCPL C + DL AMCPL A + B DL / B ADBTL DL / C ADCTL DL / (A + B) ADAPBTL DL / (A + B + C) DAPBPCTL (A + B) DL / C...
  • Page 51 Amplitude Functions Amplitude Correction AMPCOR Amplitude Correction to Limit Lines CORTOLIM Amplitude Meter AMETER Amplitude Units AUNITS Automatic Measurement AUTOMEAS Automatic Measurement in dB AUTOMDB Automatic Measurement sensitivity control AUTOMOPT Automatic Ranging AUTORNG Chop Mode CHOP Di raction Grating Order GRATORDER Limit Line Data to Amplitude Correction LIMTOCOR Linear Scale...
  • Page 52 Calibration Functions (continued) Limit Line Data to Amplitude Correction LIMTOCOR Select Flatness Corrections CORSEL Trace Zeroing AUTZERO Zero Photo diode ZERO Current Generator Functions Current Source: Output Limit IGENLIMIT Current Source: Pulse Mode Duty Cycle IGENDTYCY Current Source: Pulse Mode Pulse Width IGENPW Current Source: Current Control IGEN...
  • Page 53 Graphics Functions Character Height CHEIGHT Character Width CWIDTH Clear Display CLRDSP De ne Graphics Window DWINDOW Delete Item DELETE Display Grid GRID Display Marker Display Variable DSPLY Dispose User Menu DISPU Graph Trace GRAPH Identify Item Lines LINES Line Type LINET Lock Annotations O ANNOFF Origin...
  • Page 54 Information Functions (continued) Instrument State STATE Limit Line LIMILINE Limit Line: Beep LIMIBEEP Limit Line: Fail LIMIFAIL Limit Line: Test LIMITEST Memory Message Module Address MODADD Module Identi cation MODID Plot PLOT Return Display-Mode Text DSPTEXT Return Reported Warnings WARN?, XWARN? Revision Self Test TEST...
  • Page 55 Instrument-State Functions (continued) Preset User-De ned Keys KEYPST Protect State PSTATE Recall State RCLS Stwrt-up Con guration STARTUP Save State SAVES Sweep Control SWEEP Trace Preset TRPST User-Key Lock USERLOCK White Light Source LIGHT Limit-Line Functions Limit Line LIMILINE Limit Line: Amplitude LIMIAMP Limit Line: Beep LIMIBEEP...
  • Page 56 Marker Functions (continued) Marker Continue MKCONT Marker Delta Marker Minimum MKMIN Report active delta marker MKDACT? Set reference marker frequency MKDREFF Set reference marker amplitude MKDREFA Set reference marker bucket MKPABS Marker Noise MKNOISE Marker Normal Marker O MKOFF Marker Position Marker Pause MKPAUSE Marker Peak...
  • Page 57 Math and Move Functions (continued) Absolute Amplitude Units AMPU Average Compress COMPRESS Concatenate CONCAT Convert to Position Units POSU Divide Exchange Exchange Traces B and C Exponent Fast Fourier Transform Integer Logarithm Maximum Mean MEAN Measurement Units MEASU Minimum Modulo Move Multiply Peaks...
  • Page 58 Memory Utility Functions Catalog CATALOG Display Mode DSPMODE Dispose DISPOSE Erase Memory ERASE Format FORMAT Limit Line: Recall LIMIRCL Limit Line: Save LIMISAV Load LOAD Mass Storage Interface Memory Number of State Registers NSTATE Partial Erase PERASE Pre x PREFX Protect PROTECT Protect State PSTATE...
  • Page 59 Program-Control and Interrupt Functions Abort ABORT Clear Status Byte Debug DEBUG Done DONE Enter Via HP-IB ENTER If/Then/Elsif/Else/Endif IF/THEN On Marker Pause ONMKR On Menu Keypress ONMENU On User Keypress ONUSER On Window Recreation ONWINDOW Output Via HP-IB OUTPUT Pause...
  • Page 60 Trace Data Input and Output Fetch FETCH Load LOAD Measurement Data Size Recall Trace RCLT Store File STOR Store Trace SAVET Take Sweep Trace Data Format Trace Data Input and Output TRA/TRB/TRC Stimulus Response and Source Functions Measure Mode MEASURE Store Reference STORREF User-De nition Functions...
  • Page 61 Wavelength Functions Automatic Measurement AUTOMEAS Automatic Measurement of Final Span AUTOMSP Automatic Measurement sensitivity control AUTOMOPT Center Wavelength CENTERWL Center-Wavelength Step Size Convert Trace Position to Wavelength WLUNITS Di raction Grating Order GRATORDER Full Span Limit Line: Wavelength LIMIWL Marker Bandwidth MKBW Marker Bandwidth Amplitude MKBWA...

  • Page 62: Programming Commands

    Programming Commands ABORT Stops execution of a user-de ned function and returns control to the normal command input level. ABS < > < > destination source Does a point-by-point absolute value of the source variable or trace and stores the result in the destination variable or trace. ACTDEF <...
  • Page 63 ADCTRGDLY < > < > number seconds AUTO MAN)) Delays ADC triggering. < > Query response: number ADCTRGSYN ( (AUTO OFF)) Sets status of ADC SYNC OUT during active (non-free) ADC trigger modes. Query response: AUTO ADD < > < >...
  • Page 64 AMCPL ( (OFF Subtract trace C from trace A, then add the display line ( (A-C)+DL ). AMETER ( (OFF Enables a readout of the amplitude of the blank-ahead marker in the display's message area. < > Query response: number <...
  • Page 65 APBDCTL ( (OFF (A+B) * DL / C) AUNITS ( (AUTO Speci es the amplitude units for input, output, and display. Query response: DBM AUTOALIGN Automatically realigns the output ber of the optical spectrum analyzer's monochromator with the output beam. AUTOMDB <...

  • Page 66: Programming Commands

    AVG < > < > < > destination source average ratio Computes the average value of the source and the destination and places the value in the destination using the following: average ratio old destination source 1) ( new destination average ratio <...
  • Page 67 CALCOR (ALL PWR),(0 Enables or disables correction factors computed by the CAL command. Query response: 0 CALDATA (FIRST SECOND)?; Queries the optical spectrum analyzer for the factory supplied calibration data for the rst or second grating order. The calibration data returned is determined by the INSTMODE setting.
  • Page 68 CLRDSP Removes all optical spectrum analyzer graphics from the display and its memory. CLRW (TRA TRC); Clear-writes the speci ed trace. Sets all bits in the status-byte register to 0. COMPRESS < > < trace destination trace > source ,(AVG SMP); Stores a compressed copy of the source trace in a smaller destination trace according to the speci ed compression algorithm.
  • Page 69 CORSEL ( (0 Selects which atness correction table will be applied to the measurement data. 0 ::= Applies both diode and grating atness correction tables. 1 ::= Applies only diode atness correction table. 2 ::= Applies only grating atness correction table. 3 ::= Applies no atness correction tables.
  • Page 70 [ (? Z)]; Starts the DFB (distributed-feedback) laser characterization measurement downloadable program. < > < > < Query response: peak wavelength wavelength o set stop > < > < band center o set side mode suppression ratio > < > < > <...
  • Page 71 < > < > reference trace ::= TRA user-de ned trace ENTER < > < > HP-IB address destination Establishes the analyzer as a controller on HP-IB. < > < > < HP-IB address number prede ned > < > < >...
  • Page 72 Returns numeric codes that describe the nature of any reported errors. < > < > Query response: number number EXP < > < > < > destination source scaling factor Divides source by scaling factor, raises this quotient by a power of 10, then sends the result to the destination.
  • Page 73 [ (? Q)]; Starts the FP (Fabry-Perot) laser characterization measurement downloadable program. < > < Query response: peak wavelength mean > < > < wavelength mode spacing (M) mode spacing > < > < (Hz) full-width, half-maximum (FWHM) peak > <...
  • Page 74 FUNCDEF < > < user-de ned function name string data > < > < > eld A-block data eld I-block data eld De nes a list of analyzer commands that are executed whenever a user-de ned function is encountered. < > Query: user-de ned function name <...
  • Page 75 Blanks the active function readout and disables data entry. Selected with IP. Returns the model number of the system master (control module). Query response: HP70950B HP70951B HP70952B < > < > operand 1 ,(LT NE), operand 2 < > THEN command list <...
  • Page 76 < > IGENPW number EP)) Sets the pulse width of the current generator's pulse mode. This command is valid only if the current-generator, option 001 is installed. < > Query response: number INSTMODE ( (OSA PWRMTR PRESEL PULSE)) Selects an optical spectrum analyzer measurement mode. Query response: OSA PWRMTR PRESEL...
  • Page 77 KEYDEF < > < > < >< key number key function delimiter character > < >j string delimiter Assigns a label and user-de ned function to a key. USER < > < >j< >j< >j key number number trace element operand <...
  • Page 78 LIMIAMP < > < > number [DBM power unit UP)) Sets the limit-line segment amplitude. < > Query response: number LIMIBEEP ( (OFF Sounds a beep when trace data exceeds limit-line test limits. Query response: 0 LIMIBOT [?]; Activates the last segment of the limit-line table. <...
  • Page 79 LIMILINE < > number Returns the current limit-line parameters for future recall or build a new limit line. < > Query response: character string consisting of LIMILINE, LIMIREL, LIMIHALF, and LIMISEG commands, which restore the limit-line table. LIMINEXT Activates the next limit-line segment. <...
  • Page 80 LIMITEST ( (OFF Compares active trace data to limit-line parameters. Query response: 0 LIMITYPE ( (SLOPE FLAT POINT)) Speci es the limit-line segment type. Query response: SLOPE FLAT POINT < >< > LIMIWL number wavelength unit UP)) Sets the wavelength of the currently active limit-line segment. <...
  • Page 81 LOG < > < > < > destination source scaling factor Computes the logarithm of the source, multiplies it by the scaling factor, then stores the result in the destination. < > < > < > scaling factor number prede ned variable user- >...
  • Page 82 MINH (TRA TRC); Updates each trace element with the minimum level detected. MK < > < > x coordinate y coordinate Places a marker at the speci ed coordinates which are either in the current scaling units or in display window units. <...
  • Page 83 MKCWL Sets center wavelength equal to wavelength at the marker. < > < > < > number wavelength unit time unit UP)]; Positions a marker relative to the reference marker, according to wavelength. MKDACT Report which marker is the currently active delta marker. MKDREFA ( (X DM))
  • Page 84 MKPABS < > number Sets the current active delta marker to the bucket requested. < > < > MKPAUSE number time unit OFF)) Pauses the sweep at the active marker for the speci ed length of time. < > Query response: number <...
  • Page 85 UP)) Fix tunes the optical spectrum analyzer to a speci ed wavelength. If INSTMODE is not set to PRESEL, MKTUNE generates an error message. This command is valid only for the HP 71451B (or the HP 70951B). < > Query response: number <...
  • Page 86 < > MODADD module reference number [,ROW ,COLUMN]]?; Returns the HP-MSIB address of the speci ed module. < > < > < module reference number number prede ned > < > < > < variable user-de ned variable prede ned function trace > element <...
  • Page 87 MXMH (TRA TRC); Updates each trace element with the maximum level detected. NORM ( (OFF Controls trace normalization for stimulus-response measurement. < > NSTATE number UP)) Sets the number of state register les available for information storage. < > Query response: number <...
  • Page 88 < > element I-block data eld Establishes the optical spectrum analyzer as a controller on HP-IB. RELHPIB releases this capability. The data is output according to the speci ed format options (K, KC, KL, F). OVRW (TRA TRC); Enable clear-write mode, but skip the initial clear.
  • Page 89 < > < > [ (PD PU)] x coordinate y coordinate ,[PD < > < > x coordinate y coordinate Moves the graphics pen from its current position to the position speci ed. If the pen is down, a line is drawn on the display. <...
  • Page 90 Returns the light source status; 0 indicates o and 1 indicates on. Query response: 0 PDMEAS ( (OFF ON)[ (PD PU)]; Measures the atness of a photo diode under test. This command is only valid for the HP 71451A (or the HP 70951A). PDWL < > < > destination trace...
  • Page 91 PEAKS < > < > destination source ,(AMP WLN)?; Sorts signal peaks by wavelength or amplitude, stores the horizontal position of each peak in the destination, then computes the number of peaks found. < > < > < destination source ::= TRA user-de ned >...
  • Page 92 POWERON ( (IP LAST RECALL)) Determines the instrument state of the optical spectrum analyzer when power is applied. Query response: IP LAST < > < > x coordinate y coordinate ,[PD < > < > x coordinate y coordinate Moves pen to coordinate relative to the current pen position. <...
  • Page 93 < > < > PWRBW source percentage Computes the bandwidth that contains a percentage of the total measured power. < > < > < source ::= TRA user-de ned trace trace > range < > < > < > < percentage number prede ned variable user-...
  • Page 94 > element < > < >< >< > key label delimiter character string delimiter RELHPIB Releases HP-IB control by the optical spectrum analyzer. REPEAT < > < > command list command list UNTIL < > < > < >...
  • Page 95 < > < > (TRA user-de ned trace trace range Computes the root-mean-square value of a trace, in measurement units. < > Query response: number < > ROFFSET number [DB] UP)) O sets all amplitude readouts on the display without a ecting the trace data. <...
  • Page 96 < delimiter character string delimiter A-block data > < > eld I-block data eld Returns or stores the serial number of the HP 70950A or the HP 70951A. < > Query response: A-block data format < > < > SMOOTH...
  • Page 97 < > < > number time unit AUTO)) Speci es the rate that the optical spectrum analyzer sweeps the current measurement range. Default units are seconds. < > Query response: number STARTUP ( (AUTO MAN)) Controls the start up con guration operation of the optical spectrum analyzer.
  • Page 98 STORREF THRU; Store through references for stimulus-response measurements. This command is valid only for the HP 71451B (or the HP 70951B). SUB < > < > < > destination source 1 source 2 Subtracts source 2 from source 1, point by point, then stores the result in the destination.
  • Page 99 < >< >< > < TEXT delimiter data byte[s] delimiter A-block data > < > eld I-block data eld Writes text on the optical spectrum analyzer display. < > < number wavelength > unit ON)) Blanks signal responses below the speci ed threshold level. Default units are dBm.
  • Page 100 < > < > < > number amplitude unit number < > < > < > amplitude unit A-block data eld I-block data eld Sends or receives trace-amplitude information for traces A, B, or < > < > < > Query response: trace element position...
  • Page 101 TRSTAT Returns the current status of the active trace. Query response: (MAX WRITE OFF),(OFF (MAX WRITE OFF),(OFF Initiates and takes a sweep. TWNDOW < > destination ,(FLATTOP HANNING UNIFORM HAMMING); Formats a trace array with real values for use with the fast Fourier transform function (FFT).
  • Page 102 < > < > < USERWARN number prede ned variable user- > < > < de ned variable prede ned function trace > < > < > < > < element ),(( delimiter character delimiter >< > < > < > length lsb length character character Display a user de ned warning message.
  • Page 103 < > number [DB] UP)) Determines the direction and magnitude of change in the detected video-signal level that triggers a sweep. < > Query response: number < > < > number [DBM power unit UP)) Speci es the video trigger amplitude level. <...
  • Page 104 WLUNITS < > < > < > XAMPSW XCH < > < > < > j< >j< >j < >j< > < > j< >j< >j < >j< >j< >j < >f< >g XERR < > < > < > < >...

  • Page 105: Error Messages

    If you have a computer, error messages can ERR? also be retrieved via HP-IB by executing the programming command. Refer to the for information on the Programmer's Guide ERR? command and programming.

  • Page 106: User Application Errors (0001 { 0999)

    User Application Errors (0001 { 0999) The optical spectrum analyzer reports these errors when it cannot decipher a command in a user-application program. User-application programs consists of remote programming messages that are loaded into RAM. Refer to the for information on Programmer's Guide programming.

  • Page 107: Operating Errors (2000 { 2999)

    Operating Errors (2000 { 2999) Operating errors occur when the spectrum analyzer is operated incorrectly. 2000 No errors This message is returned from querying the system when no error is present in the system. 2001 Illegal command The remote command sent over the bus or executed as part of a DLP was not a legal remote command.
  • Page 108 Internal error due to illegal communication. Due to a hardware failure. To solve thisproblem, please document all details possible that lead up to the error and contact your HP representative. 2010 Cmd out of sequence Internal error due to process synchronization. Possible hardware failure.
  • Page 109 Operating Errors (2000 { 2999) debug To solve thisproblem, use the softkey or the DEBUG debug command to locate the programming error. Refer to the softkey description in the and the DEBUG User's Guide command description in the Programmer's Guide 2014 Duplicate identi er A variable, trace, or DLP name matches a reserved spectrum debug...
  • Page 110 2024 Illegal HP-MSIB comm Illegal HP-MSIB communication. An HP-MSIB protocol violation has occurred. To solve thisproblem, document all steps leading up to the error condition and contact your HP representative. 2025 System error (slave) HP-MSIB communications with a slave module has created this error.
  • Page 111 Operating Errors (2000 { 2999) Record the HP model numbers of the modules in the system. Record the rmware version. Contact the nearest HP Sales and Service Oce for assistance. 2027 Service mode|do IP This is a user-generated system protocol error. The bandwidth or reference select is not in their AUTO modes.
  • Page 112 HP-IB. 2037 No instr resp No HP-IB instrument response from an OUTPUT command or mass storage (such as SAVE or RECALL) to an HP-IB disk. To solve thisproblem, verify that the HP-IB address is correct. 2039 User stack over ow There is not enough RAM space remaining for the operation requested.
  • Page 113 User's Guide If an HP-MSIB card is the selected storage device, make sure the card is in the front-panel card slot and that the card's address is the same value as the display's HP-IB address.
  • Page 114 The automeasure or autoalignment routine did not nd a valid signal. To solve thisproblem, connect a light source to the front-panel MONOCHROMATOR INPUT connector (OPTICAL INPUT on HP 71450A instruments.) Or, use a trace marker to specify a signal for the automeasure or autoalignment routine to use.
  • Page 115 Operating Errors (2000 { 2999) change the start and stop wavelengths to be within the valid range of the command. 2070 Sweep too fast The selected sweep time is too fast to produce accurate data. The frequency of the trigger signal is too low. This error only occurs in non-zero spans.To solve this problem, increase the external trigger frequency or sweep time.

  • Page 116: Hardware-Warning Errors (6000 { 6999)

    (no module at address). To solve thisproblem, if using MSIB communication, verify the address if the module you are trying to communicate with is correct. Otherwise, document all steps that led to the error condition and contact your HP representative. 6008 Con dence test failed 6009 No module label 6010 Err in MDOC response An error in module-output capabilities response has occurred.

  • Page 117: Hardware-Broken Errors (7000 { 7999)

    7033 Power supply error One or more of the +5 V, 12 V, or 5 V voltages are out of spec. 7036 HP-MSIB error 7047 RAM failure The RAM self test detected a failure in the system RAM. To solve thisproblem, return to Hewlett-Packard for servicing.
  • Page 118 Hardware- Broken Errors (7000 { 7999) and may assist Hewlett-Packard in diagnosing the problem. To solve thisproblem, return to Hewlett-Packard for servicing. 7054 Bad DSP ROM The calibration-data ROM for the data acquisition hardware has failed. This is probably due to faulty hardware. The 2-digit hexadecimal code indicates the nature of the failure and may assist Hewlett-Packard in diagnosing the problem.
  • Page 119 Hardware- Broken Errors (7000 { 7999) problem. To solve thisproblem, return to Hewlett-Packard for servicing. 7057 DSP Error An internal error occurred in the data acquisition hardware or rmware. The 4-digit hexadecimal code indicates the nature of the failure and may assist Hewlett-Packard in diagnosing the problem.

  • Page 120: Computation Errors (8000 { 8999)

    Computation Errors (8000 { 8999) Computation errors occurs during illegal math operations. For all debug of these computation errors, Use the menu or the DEBUG debug command to locate the programming error. Refer to the softkey description in Chapter 3. Or, refer to the DEBUG command description in the Programmer's Guide 8000 Divide by zero...

  • Page 121: Factory-Use Only Errors (9000 { 9999)

    Record the error number and the hexadecimal code. Record all events that led up to the occurrence of the error message. Record the HP model number of the optical spectrum analyzer and the display. Record the rmware version.

  • Page 122: Warning Messages (16001 { 16012)

    Warning Messages (16001 { 16012) Warnings indicate that a user might not be performing a task properly. 16001 Simulated hardware System hardware is missing. The instrument attempts to simulate the missing hardware in order to continue operation. 16002 Trace length changed (due to ADC switch) The trace length has been changed to accommodate a change in the analog-to-digital converter (ADC).
  • Page 123 Warning Messages (16001 { 16012) positioner's trajectory correction table. In rare situations where these o sets are zero, this warning is displayed. 16011 Span too large The wavelength span has set the start and stop wavelengths outside the tunning range of the optical spectrum analyzer. 16012 PSDAC adjust past RL Error Messages 4-19...
  • Page 124 www.valuetronics.com...

This manual is also suitable for:

71451b71452b