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HP 70000 series, User Manual

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HP 70000 series User Manual Download Page 274

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

VIDEO

LEVEL

aaaaaaaaaaaaaaaaaaaaaaaaaa

VIDEO

(video

trigger)

triggers

the

sweep

with

the

detected,

ltered,

input

signal

(video).

A

sweep

occurs

when

the

detected

signal

satises

the

video

triggering

conditions

,

which

are

direction,

hysteresis

,

and

level.

The

sweep

occurs

when

the

detected

signal

increases

or

decreases

(direction)

a

specied

amount

(hysteresis)

when

approaching

a

specied

amplitude

(trigger

level).

F

or

example

,

if

video

hysteresis

is

5

dB

and

the

trigger

level

is

090

dBm,

the

analyzer

sweeps

when

the

detected

signal

level

changes

from

95

dBm

to

090

dBm.

See

the

NNNNNNNNNNNNNNNNNNNNNNNNNNNNN

HYS

LEVEL

and

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

VIDEO

LEVEL

softkey

descriptions

.

Functional

Type:

sweep

and

trigger

Firmkey

A

ccess:

NNNNNNNNNNNNNNNNN

BWSwp

Preset

State:

O

a

aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

VIDEO

LEVEL

species

the

trigger

level

for

the

video

softkey

function.

The

video-trigger

level

is

preset

to

100

dBm

and

cannot

exceed

6300

dBm.

The

smallest

value

allowed

is

0.01

dBm.

See

the

NNNNNNNNNNNNNNNNNNNNNNNNNNNNN

HYS

LEVEL

and

NNNNNNNNNNNNNNNNN

VIDEO

softkey

descriptions

.

Functional

Type:

sweep

and

trigger

Firmkey

A

ccess:

NNNNNNNNNNNNNNNNN

BWSwp

Preset

State:

0100

dBm

Softkey

Descriptions

4-179

Summary of Contents for 70000 series

Page 1: ...ble You will find any other available product information on the Agilent Test Measurement website www tm agilent com HP References in this Manual This manual may contain references to HP or Hewlett Packard Please note that Hewlett Packard s former test and measurement semiconductor products and chemical analysis businesses are now part of Agilent Technologies We have made no changes to this manual...

Page 2: ...User s Guide HP 70000 Series Modular Spectrum Analyzer System HP 70900B Local Oscillator Source Controlled Modules ABCDE HP Part No 70900 90286 Printed in USA March 1994 Edition A 0 0 ...

Page 3: ...material Restricted Rights Legend Use duplication or disclosure by the U S Government is subject to restrictions as set forth in subparagraph c 1 ii of the Rights in Technical Data and Computer Software clause at DFARS 252 227 7013 for DOD agencies and subparagraphs c 1 and c 2 of the Commercial Computer Software Restricted Rights clause at FAR 52 227 19 for other agencies c Copyright Hewlett Pack...

Page 4: ...another country Hewlett Packard warrants that its software and rmware designated by Hewlett Packard for use with an instrument will execute its programming instructions when properly installed on that instrument Hewlett Packard does not warrant that the operation of the instrument or software or rmware will be uninterrupted or error free Limitation of Warranty The foregoing warranty shall not appl...

Page 5: ...N sign until the indicated conditions are fully understood and met WARNING The WARNING sign denotes a hazard It calls attention to a procedure which if not correctly performed or adhered to could result in injury to the user Do not proceed beyond a WARNING sign until the indicated conditions are fully understood and met DANGER The DANGER sign denotes an imminent hazard to people It warns the reade...

Page 6: ...n result in personal injury There are many points in the instrument which can if contacted cause personal injury Be extremely careful Any adjustments or service procedures that require operation of the instrument with protective covers removed should be performed only by trained service personnel CAUTION Before this instrument is switched on make sure its primary power circuitry has been adapted t...

Page 7: ...ions are organized alphabetically Troubleshooting information is provided in the following chapters Chapter 5 provides modular system troubleshooting procedures Chapter 6 provides descriptions for displayed system error messages Refer to the appendixes and glossary for the following information Appendix A describes spectrum analyzer and lightwave signal analyzer theory of operation The appendix al...

Page 8: ...ults 1 14 Common Measurement Indicators 1 14 Lightwave Signal Analyzer Measurement Indicators 1 17 Auxiliary Measurement Indicators 1 19 Interpreting Front Panel Indicators 1 21 Using the 4USER5 Key 1 23 Presetting the User Softkeys 1 23 Creating a Custom Menu of User Softkeys 1 23 Incorporating User De ned Functions into the User Softkey Menu 1 25 Restricting Instrument Operation to User Softkeys...

Page 9: ... NNNNNNNNNNNNNNNNNNNNNNNNNN A6A0B DL 4 9 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNN A6 A0B 0C 4 10 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN A6 A0B 0C DL 4 10 NNNNNNNNNNNNNNNNN A6A0C 4 11 NNNNNNNNNNNNNNNNNNNNNNNNNN A6A0C DL 4 11 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN A6DL A B C 4 12 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN A METER On Off 4 12 NNNNNNNNNNNNNNNNNNNNNNN AM FREQ 4 13 NNNNNNNNNNNNNNNNNNNNNNNNNN...

Page 10: ...NNNNNNNNNNN B XCH C 4 29 NNNNNNNNNNNNNNNNNNNNNNN CAL ALL 4 30 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN cal enable 4 30 NNNNNNNNNNNNNNNNNNNNNNNNNN CAL GAIN 4 31 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN CAL LOGAMP 4 31 NNNNNNNNNNNNNNNNNNNNNNNNNN cal menu 4 31 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN CAL RES BW 4 32 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN CAL SRC INT EXT 4 32 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN...

Page 11: ...NN DEBUG On Off 4 51 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN DEBUG SLOW 4 52 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN DEFINE USR KEY 4 52 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN DELETE ALL 4 53 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN DELETE CHAR 4 53 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN DELETE or 4 54 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN DELETE SEGMENT 4 54 NNNNNNNNNNNNNNNNN DELTA 4 55 NNNNNNNNNNNNNNN...

Page 12: ...NNNNNNNNNNNNNNNNNNNNNNNNNNNNNN GRAT On Off 4 71 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN GRATSCR On Off 4 71 NNNNNNNNNNNNNNNNNNNN GROUND 4 72 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN HIGHEST PEAK 4 72 NNNNNNNNNNNNNN HOLD 4 73 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN HORZ OFFSET 4 73 NNNNNNNNNNNNNNNNNNNNNNNNNNNNN HPIB DISK 4 74 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN HP MSIB CARD 4 75 NNNNNNNNNNNNNNNNN...

Page 13: ...NNNNNNNNNN MAX HOLD A NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN MAX HOLD B NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN MAX HOLD C 4 94 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN MAX IN AutoMan 4 95 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN MAX MXR LEVEL 4 95 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN MIN HOLD A NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN MIN HOLD B NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN MIN HOLD C 4 96 NNNNNNNNNNNNNNNNNNNNNN...

Page 14: ...NNNNNNNNNNNNNNNNNNN preamp control 4 113 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PREAMP N On Off 4 113 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PRESEL CENTER 4 114 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN presel center 4 114 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PRESEL DAC 4 115 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN pre select 4 115 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PRESEL HYS 4 116 NNNNNNNNNNNNNNN...

Page 15: ...N REL RIGHT 4 133 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN REPLACE or 4 134 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN RES BW AutoMan 4 135 NNNNNNNNNNNNNNNNNNNNNNN RESTART 4 136 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN RIGHT PEAK 4 136 NNNNNNNNNNNNNNNNNNNNNNNNNNNNN RIGHT PIT 4 137 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN RIN SYS On Off 4 137 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN ROM VERSION 4 138 NNN...

Page 16: ...NNNNNNNNNNNN STM RSP On Off 4 157 NNNNNNNNNNNNNN STOP 4 158 NNNNNNNNNNNNNNNNNNNNNNN STORE A 4 158 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN STORE OPEN C 4 159 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN STORE THRU B 4 160 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN STP GAIN AutoMan 4 161 NNNNNNNNNNNNNNNNNNNNNNN SWPTIME 4 161 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN SWPTIME AutoMan 4...

Page 17: ...NNNNNNNNNNNNNNN VID LIN On Off 4 180 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN VIEW A BLANK A 4 180 NNNNNNNNNNNNNN VOLT 4 181 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN WARNING On Off 4 181 NNNNNNNNNNNNNN WATT 4 182 NNNNNNNNNNNNNNNNNNNNNNN WAVELEN 4 182 NNNNN X 4 182 NNNNNNNNNNNNNN ZERO 4 183 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN ZOOM TO RES BW 4 184 5 Troubleshooting Troubleshooting T...

Page 18: ...Over ow Message 5 21 Other Error Messages 5 21 No System Diagnostics in RAM 5 21 Catastrophic Failures 5 22 Symptoms 5 22 Error Indicators 5 22 I O or HP MSIB Indicator is On 5 22 Volt Temp Error Indicator LED 5 23 Current Error Indicator LED 5 24 I O Check Error Indicator LED 5 24 Abnormal Screen Display 5 25 HP MSIB Troubleshooting 5 25 Module Removal Method 5 26 Repair Procedures 5 27 Repair by...

Page 19: ...r Panel Ports B 13 HP 70900B Local Oscillator Source B 15 Front Panel Ports B 15 Rear Panel Ports B 16 HP 70902A IF Section Resolution Bandwidth 10 Hz 300 kHz B 17 Front Panel Ports B 17 Rear Panel Ports B 18 HP 70903A IF section Resolution Bandwidth 100 kHz 3 MHz B 19 Front Panel Ports B 19 Rear Panel Ports B 20 HP 70904A RF section 100 Hz to 2 9 GHz B 21 Front Panel Ports B 21 Rear Panel Ports B...

Page 20: ...Applying Index Matching Compound C 3 Cleaning Wet Connectors C 4 Making the Connection C 4 Fiber Optic Cable and Connector Summary C 5 D ASCII Codes Control Codes and Escape Characters American Standard Code for Information D 2 Control Codes and Escape Characters D 3 Position the Pen Clear or Move Text or Beep D 3 Enhance Text D 3 Change Color D 4 Display Functions Mode D 4 Glossary Index Contents...

Page 21: ...p 3 of 5 2 9 2 9 NNNNNNNNNNNNNNNNN State Softkey Menu Map 4 of 5 2 10 2 10 NNNNNNNNNNNNNNNNN State Softkey Menu Map 5 of 5 2 11 2 11 NNNNNNNNNNNNNN Misc Softkey Menu Map 1 of 2 2 12 2 12 NNNNNNNNNNNNNN Misc Softkey Menu Map 2 of 2 2 13 3 1 Marker Peak Functions Analyze Trace Data 3 25 4 1 Blanked Annotation 4 18 4 2 Catalog of User Memory with External Memory Selected 4 34 4 3 Locating the Data Li...

Page 22: ...n Block Diagram A 12 B 1 HP 70300A RF Tracking Generator and HP 70301A Microwave Tracking Generators Front View B 2 B 2 HP 70300A RF Tracking Generator and HP 70301A Microwave Tracking Generators Rear View B 4 B 3 HP 70310A Precision Frequency Reference Rear View B 6 B 4 HP 70600A Preselector Front View B 8 B 5 HP 70600A Preselector Rear View B 9 B 6 HP 70620A B Preampli er and HP 70621A Preampli ...

Page 23: ...ociated Mixing Harmonics 4 69 4 14 Frequency Ranges and Corresponding Harmonic Numbers 4 77 4 15 Frequency Ranges and Corresponding Harmonic Numbers 4 116 4 13 Preselector DAC Frequency Bands 4 118 B 1 Preampli ers and Their Frequency Ranges B 10 D 1 ASCII Characters codes 0 through 127 and HP 70004A Color Display Characters D 2 D 2 Control Codes D 3 D 3 Escape Characters that Control the Pen Clea...

Page 24: ...the following conventions 4KEY5 A key name that looks like this represents a key that is physically located on the instrument and is commonly referred to as a front panel key NNNNNNNNNNNNNNNNNNNNNNN softkey Text that looks like this with all lowercase letters represents a softkey that accesses another menu of related softkeys NNNNNNNNNNNNNNNNNNNNNNN SOFTKEY Text that looks like this with all upper...

Page 25: ...rev menu or 465 to view the previously displayed level of softkeys The 465 key can be used to recall the last ten softkey entries Some of the softkeys display information that exceeds the space on the display To view additional pages of information press NNNNNNNNNNNNNN MORE Some softkeys switch between two states such as internal or external INT EXT automatic or manual AutoMan and on or o On O An ...

Page 26: ...on if the instrument has been under remote control This key is called 4LOCAL5 on some models Softkeys execute instrument or display functions depending on whether 4DISPLAY5 4MENU5 or 4USER5 was selected The softkeys are located around the perimeter of the display screen Plot 4PLOT5 plots the analyzer display if a plotter is connected to the display HP IB port Print 4PRINT5 prints the analyzer disp...

Page 27: ...h press of NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NEXT INSTR selects another instrument Hold 4HOLD5 blanks the active function readout and disables the front panel knob numeric keypad and step keys until another function softkey is pressed Knob provides data entry moves the marker or moves the cursor through the character set Step down 495 decreases the value of the active function or moves the cursor i...

Page 28: ...nt keypad provides easy access to commonly used analyzer functions duplicating the operation of corresponding 4MENU5 softkeys that surround the display screen The instrument keypad is not available on the HP 70205A graphics display or the HP 70206A system graphics display Figure 1 2 Instrument Keypad Overview 1 5 ...

Page 29: ...lay screen The underscore indicates which group of functions is selected After selecting a function category press any softkey at the right side of the display screen to execute an analyzer function Figure 1 3 How to Access Analyzer Functions The softkey maps in Chapter 2 illustrate the location of all the softkeys that are accessed by pressing 4MENU5 Refer to Chapter 4 for a description of each s...

Page 30: ...alyzer is activated If the analyzer is still not activated when power is applied inspect the rear panel HP MSIB interconnections for tightness and then cycle power If you cannot activate the analyzer press 4DISPLAY5 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN address map to inspect the con guration of your system Move the highlighted rectangle along the bottom row of the address map by turning the front p...

Page 31: ...te the input port a Press NNNNNNNNNNNNNNNNN State b Press NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN select input c Press the key corresponding to the desired input If the calibrator signal still is not present on the analyzer screen see that the interconnect cables are properly installed and are tightly secured If necessary refer to the HP 70000 Modular Spectrum Analyzer Installation and Veri cation ...

Page 32: ...ings of the 4MENU5 softkeys in the following table Table 1 1 Softkey Settings when Executing Calibration Procedure Key Keystrokes that Access Key Key Setting when Using Input Port on External Mixer Interface Module Key Setting When Using Standard RF Input Ports NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN FREQ FOR CAL NNNNNNNNNNNNNNNNN Amptd 321 4 MHz 300 MHz NNNNNNNNNNNNNN MORE NNNNNNNNNNNNNNNNNNNNNNNN...

Page 33: ...measurements Exposed ber optic tips are easily scratched Do not allow any object to touch an unprotected tip This precaution is particularly important when installing a connector interface and when making and breaking connections Never insert any cleaning tool into an optical connector ferrule this may cause damage that can a ect the optical system Do not touch an exposed ber optic tip An oily nge...

Page 34: ... on the screen then measuring the frequency and amplitude of the signal Measurements can be made with either trace A B or C An input signal can be measured using the following four steps 1 Set the span 2 Set the center frequency 3 Set the amplitude 4 Activate the marker On all systems measurements can be made using the softkeys located on the left and right side of the display On models having an ...

Page 35: ...marker To place a marker on the highest peak contained in the trace press either the NNNNNNNNNNNNNNNNNNNN Marker softkey or 4NORMAL5 on the instrument keypad The marker displays both the frequency and the amplitude of the signal peak in the active function readout area and in the upper right hand corner of the display Figure 1 5 Calibration Signal Use Coupled Functions to Maintain Accuracy Easily ...

Page 36: ... signals For example to resolve two signals of equal amplitude with a frequency separation of 1 kHz a resolution bandwidth of 1 kHz or less should be used Phase noise seen along the lower skirt of the displayed response can also a ect resolution Viewing Low Level Signals Low level signals hidden by the analyzer noise oor can be viewed using several functions all accessed by NNNNNNNNNNNNNNNNNNNNNNN...

Page 37: ...y annotation that is unique to a lightwave signal analyzer Figure 1 8 describes auxiliary measurement indicators A description of each annotation is listed alphabetically following the related illustration Common Measurement Indicators Figure 1 6 Common Measurement Indicators Active function readout indicates the currently active function Amplitude scale speci es the amplitude value spanning of ea...

Page 38: ...e when UNCAL is displayed Set NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN RES BW AutoMan to automatic to recouple Span indicates the frequency spanning the ten major horizontal divisions The frequency range of one major graticule division equals span 10 Start frequency indicates frequency at left graticule edge or beginning of active trace Stop frequency indicates the frequency at the right grati...

Page 39: ...tion bandwidth When coupled the video bandwidth changes as the resolution bandwidth changes to maintain the ratio determined by NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN VBW RBW RATIO Set NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN VID BW AutoMan to automatic to recouple 1 16 Overview ...

Page 40: ...ional annotation that is unique to a lightwave signal analyzer A description of each annotation is arranged alphabetically following the gure Figure 1 6 and Figure 1 8 illustrate common analyzer annotation Figure 1 7 Lightwave Signal Analyzer Measurement Indicators Overview 1 17 ...

Page 41: ...or watts units Use the power meter softkeys to change the display annotation Power meter zeroing indicator is displayed while o sets in the power meter are being zeroed either in automatic or manual mode The indicator is an asterisk that is displayed to the right of the power meter annotation Press the NNNNNNNNNNNNNN ZERO softkey to zero the power meter manually Trace annotation indicates whether ...

Page 42: ...Auxiliary Measurement Indicators Figure 1 8 Auxiliary Measurement Indicators Overview 1 19 ...

Page 43: ... data entry for NNNNNNNNNNNNNNNNN TITLE and NNNNNNNNNNNNNNNNNNNNNNN COMMAND functions Detection mode lights when measurements are made with optional detection modes Error message explains the type of error sensed Refer to Chapter 6 for a description of system error messages Frequency o set indicates the amount of o set added to frequency annotation Function in progress lights while some functions ...

Page 44: ... Indicators The front panel indicators monitor the state of the analyzer during remote and local control and provide warnings for hardware failures and operation errors Figure 1 9 Front Panel Operation Indicators Overview 1 21 ...

Page 45: ...s sensed by the display module HP IB describes the remote control status of the analyzer When power is applied the analyzer is in local control and the indicators are o If the analyzer is addressed by a computer the remote indicator lights and the listen talk or service request indicator lights depending on the computer instructions The listen indicator lights when the analyzer has received instru...

Page 46: ...NNNNNNN PRESET USER eliminates unprotected custom softkeys and reinstates the preset user softkeys see following note CAUTION Pressing NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PRESET USER removes unprotected custom softkeys If your instrument contains diagnostics or personalities such as scalar measurement softkeys these softkeys are erased when NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PRESET USER is presse...

Page 47: ...r menu Press any softkey to indicate a spot for the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN limit lines softkey Figure 1 11 illustrates the location of the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN limit lines softkey in the user softkey menu Figure 1 11 Transfer an Analyzer Softkey to User Softkey Menu To interrupt the transfer process press 0 on the numeric keypad NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN...

Page 48: ...are normally accessed with the 4MENU5 key Since USERLOCK ON deactivates the 4MENU5 key the NNNNNNNNNNNNNNNNNNNNNNN COMMAND softkeys must be transferred to the user key menu before USERLOCK ON is executed if a computer is unavailable See Example 1 3 Example 1 5 Disable the 4MENU5 softkey 1 Add the NNNNNNNNNNNNNNNNNNNNNNN COMMAND softkey to the user menu following the procedure in Example 1 3 See Ca...

Page 49: ...t is connected to the display HP IB port NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN REPORT ERRORS lists the code and description of any operation or hardware error and lists the name and HP MSIB address of the module that produced the error To display measurement results again press 4MENU5 or 4USER5 See Appendix D for error code descriptions NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN display tests a...

Page 50: ... editing softkeys depending on the setting of NNNNNNNNNNNNNNNNNNNNNNN HSL RGB The HP 70004A Color Display User s Guide describes their operation NNNNNNNNNNN HUE NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN SATURATION NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LUMINOSITY NNNNNNNNNNN RED NNNNNNNNNNNNNN BLUE NNNNNNNNNNNNNNNNN GREEN Overview 1 27 ...

Page 51: ... personalities can also be loaded from the memory card into internal memory To view functions stored in internal memory press NNNNNNNNNNNNNN MENU NNNNNNNNNNNNNN Misc NNNNNNNNNNNNNN MORE NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN execute DLP execute down loadable program Stored functions are listed along the right side of the display Press the softkeys to execute each function 1 28 Overview ...

Page 52: ... by a battery within the memory card Change the memory card battery every two years On new cards the time of installation is engraved on the side of the card The rst digit refers to the year The next two characters refer to the month and the last digit refers to the week For example 3OC3 indicates the battery was installed during the third week of October in 1993 To change the battery follow this ...

Page 53: ...ormat NNNNNNNNNNNNNNNNNNNN FORMAT can also be used to format used memory cards but note that the formatting process destroys all stored data Follow this procedure 1 Insert the memory card 2 Specify the location of the memory card If the card is in the HP 70004A color display press NNNNNNNNNNNNNN Misc NNNNNNNNNNNNNN MORE NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN HP MSIB CARD If the card is in another ...

Page 54: ...ction Calibration Lightwave mode Power meter NNNNNNNNNNNNNNNNNNNN Marker Lightwave markers Marker annotation Marker positioning Measurement range adjustment Marker utility NNNNNNNNNNNNNNNNNNNN BW Swp Bandwidth selection Sweep and trigger selection Trace processing NNNNNNNNNNNNNNNNNNNN Traces Instrument state Memory Signal detection Trace processing NNNNNNNNNNNNNNNNN State External mixer Instrument...

Page 55: ...ction is selected from the select input softkey menu See the State softkey menu map y Softkey is present only if the system includes a module with preselector capabilities z Softkey is present only if an HP 70908A RF section is installed in the system Figure 2 1 NNNNNNNNNNNNNN Freq Softkey Menu Map 2 2 Softkey Menu Maps ...

Page 56: ...sent only if the system includes a module with power meter capabilities such as the HP 70810B lightwave section x Softkey is present when a lightwave signal path LW is selected from the select input softkey menu See the State softkey menu map k Softkey is absent when a lightwave signal path LW is selected from the select input softkey menu See the State softkey menu map Softkey is present when the...

Page 57: ... path LW is selected from the select input softkey menu See the State softkey menu map y MINIMUM POINT is replaced by REL PWR On O when a lightwave signal path LW is selected from the select input softkey menu See the State softkey menu map Figure 2 3 NNNNNNNNNNNNNNNNNNNN Marker Softkey Menu Map 2 4 Softkey Menu Maps ...

Page 58: ...NNNNNNNNNNNNNNNNNNNN BW Swp Softkey Menu aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa BW Swp Softkey Menu Figure 2 4 NNNNNNNNNNNNNNNNNNNN BW Swp Softkey Menu Map Softkey Menu Maps 2 5 ...

Page 59: ...ftkey is present press CLEAR WRT A to return the STORE A softkey y STORE A softkey is replaced by VIEW A BLANK A when STORE A is pressed z These softkeys are only available after pressing 3 DIMEN On O Figure 2 5 NNNNNNNNNNNNNNNNNNNN Traces Softkey Menu Map 2 6 Softkey Menu Maps ...

Page 60: ... input signal modules from a HP 71400C lightwave signal analyzer z Two inputs are displayed for each HP 70810B lightwave section that is installed in the system The W input is displayed below the lightwave LW input When an HP 70910A RF section is in the system the softkeys IN 1 LW 70810B and IN 2 W 70810B are replaced by IN 1 RF 70910A and IN 2 EM 70910A x Softkey is present only if the system inc...

Page 61: ...r pressing the softkey is dependent on the number of RF and lightwave modules installed in the system x Softkey is present only if the system includes a module with preselector capabilities k Softkey is present only if the system includes a module with tracking generator capabilities Figure 2 7 NNNNNNNNNNNNNNNNN State Softkey Menu Map 2 of 5 2 8 Softkey Menu Maps ...

Page 62: ... RF and lightwave modules installed in the system x Softkey is present only if the system includes a module with preselector capabilities k Softkey is present only if the system includes a module with tracking generator capabilities Softkey is present only if the system includes a tracking generator module with modulation capabilities Figure 2 8 NNNNNNNNNNNNNNNNN State Softkey Menu Map 3 of 5 Soft...

Page 63: ...at is installed in the system The W input is displayed below the lightwave LW input When an HP 70910A RF section is in the system the softkeys IN 1 LW 70810B and IN 2 W 70810B are replaced by IN 1 RF 70910A and IN 2 EM 70910A x Softkey is present only if the system includes a module with preselector capabilities k Softkey is present only if the system includes a module with tracking generator capa...

Page 64: ... if an HP 70908A RF section is installed in the system xx Pressing this softkey causes all display links to be broken To establish new display links press 4DISPLAY5 and 4NEXT INSTR5 Figure 2 10 NNNNNNNNNNNNNNNNN State Softkey Menu Map 5 of 5 Softkey Menu Maps 2 11 ...

Page 65: ...R y Pressing softkey provides a sequence of three editing functions Press REPLACE or to access the insert editing function Press INSERT or to access the delete editing function Press DELETE or to access the replacement editing function Figure 2 11 NNNNNNNNNNNNNN Misc Softkey Menu Map 1 of 2 2 12 Softkey Menu Maps ...

Page 66: ...sc Softkey Menu z If a limit value is entered enter limit is replaced by edit limit x Press DELETE ALL to return to the enter limit softkey Figure 2 12 NNNNNNNNNNNNNN Misc Softkey Menu Map 2 of 2 Softkey Menu Maps 2 13 ...

Page 67: ......

Page 68: ... that is displayed in inverse video indicates that the function is enabled When an active function is enabled it is always displayed in inverse video The use of an underline within a softkey display indicates that a speci c functional state for the softkey is selected Refer to Functional Grouping De nitions for detailed descriptions of each functional grouping in the following tables SoftKey Quick...

Page 69: ... NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN A6DL A B C Performs trace math DL A B C7A with each sweep NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN A B DL On Off Subtracts trace B from trace A point by point adds the value of the display line and then stores the results in trace A NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN A B A On Off Subtracts trace B from trace A point by point then stores the results...

Page 70: ... in a trace from 3 to 1024 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN VERT OFFSET Select the vertical o set of the three dimensional trace display NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN VID AVG On Off Executes a digital averaging routine that reduces the noise oor level but does not a ect the sweep time bandwidth or any other analog characteristic of the analyzer NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN...

Page 71: ... the graticule in logarithmic units from 0 01 to 20 dB per division NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN MAX IN AutoMan Speci es the maximum expected signal level to the spectrum analyzer input during a given measurement procedure NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN MAX MXR LEVEL Speci es the maximum signal level at the mixer input NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN REF LVL POSN ...

Page 72: ...NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN RB SPAN RATIO Speci es the ratio between the resolution bandwidth and span settings NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN RES BW AutoMan Speci es the width of the resolution bandwidth lter and controls the coupling between the resolution bandwidth and span settings NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN TRIGGER DELAY Controls the trigger delay or ...

Page 73: ... es the frequency of the calibration reference NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN GAINCAL On Off Disables the correction factors that compensate for errors in the attenuator NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LOG CAL On Off Disables the correction factors that compensate for logarithm ampli er errors in the IF section NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN POWER FOR CAL Spec...

Page 74: ...ols the positioning of the displayed horizontal graticule lines NNNNNNNNNNNNNN HOLD Blanks the active function readout and disables the numeric keypad knob and step keys until another analyzer function is activated NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LABEL Y On Off Controls the display of annotation for the horizontal graticule NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LOCKOUT ANOTA...

Page 75: ...a speci ed range NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN BIAS PK START Peaks the conversion gain for the signal marked by the active marker NNNNNNNNNNNNNNNNNNNNNNNNNNNNN CONV LOSS O sets the reference level to compensate for amplitude losses at the active input port NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LOCK H On Off Turns the lock harmonic number function on and o NNNNNNNNNNNNNNNNNNNNNNN...

Page 76: ...ment of each module in the system by column and row number NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN EXTEND STATE Lists module level parameters and current values for each module of the instrument NNNNNNNNNNNNNNNNNNNNNNNNNNNNN NEXT PAGE Provides view of next page of information NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NO OF STATES Adds or deletes state register les and their contents from user me...

Page 77: ...NN DELETE SEGMENT Erases the speci ed segment of the limit line from the limit line table NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN FREQ VALUE Moves the entry window in the limit line table NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LAST SEGMENT Moves the entry window to the next row in the limit line table and speci es that the parameters in that row constitute the last line segment in the limit line NNNNNNNN...

Page 78: ... the peak of the highest level signal detected NNNNNNNNNNNNNNNNNNNNNNNNNNNNN LEFT PEAK Moves the marker to the closest signal peak of lower frequency NNNNNNNNNNNNNNNNNNNNNNNNNN LEFT PIT Moves the displayed active marker to the next signal peak to the left NNNNNNNNNNNNNNNNNNNNNNN MIN PIT Selects the next lowest pit This would be used to move up after using MKPIT NNNNNNNNNNNNNNNNNNNNNNNNNNNNN MIN PO...

Page 79: ...ower NNNNNNNNNNNNNNNNNNNNNNNNNNNNN REL RIGHT Activates marker 3 and positions it on a trace in the current amplitude terms relative to the position of marker 1 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN RIGHT PEAK Moves the marker to the closest signal peak of higher frequency NNNNNNNNNNNNNNNNNNNNNNNNNNNNN RIGHT PIT Selects the next right pit NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN RIN SYS On Off Turns...

Page 80: ...e over writing any existing table entries NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN RECALL MEMORY Loads the contents of a program le into internal memory or reserved memory NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN RECALL TRACE A Loads the contents of a trace le into trace A NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN RECALL USERKEY Clears the current menu of user de ned softkeys then loads th...

Page 81: ...NNNNNNNN ZERO Zeroes o sets in the internal average power meter NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN power meter Accesses the power meter softkey functions NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN preamp control Accesses the preampli er control softkeys Preselector Functions NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN C 6 DAC SEARCH Places the DAC search values into trace C NNNNNNNNNNNNNNNNNNNN...

Page 82: ...ram on a computer NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN DELETE CHAR Deletes individual characters at the entry window position on the data line NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN DELETE or Selects the replacement editing function for the programming text on the data line at the bottom of the display NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN ENTER COMMAND Executes the contents of the data line wh...

Page 83: ...e request mode by setting the message bit in the status byte register true NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN WARNING On Off Enables or disables warning messages from being displayed on the display NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN ERASE RESTART Accesses erase restart softkey functions Signal Detection Functions NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN CPL DET On Off Control ...

Page 84: ...erence between the marked signal and signals tested as its image or harmonic NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN SIG ID MAN OFF Selects automatic or manual mode Its preset state is automatic mode NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN SIGNAL IDENT Executes a signal identi cation routine using either the image or shift method NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN sig id options Acce...

Page 85: ...n Off Allows faster sweep times up to ve times faster when speci ed accuracy is not required and the UNCAL indicator is undesirable NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN SINGLE SWEEP Initiates one sweep if the trigger conditions are met NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN SWPTIME AutoMan Speci es the rate that the analyzer sweeps the current measurement range NNNNNNNNNNNNNNNNNNNNNNNNN...

Page 86: ...s NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN BLANKNG On Off Turns o blank source NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PWR STP AutoMan Sets the power step size for the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN SRC PWR On Off NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PWR SWP On Off and NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN SRC PWR OFFSET softkeys NNNNNNNNNNNNNNNNNNNNNNNNNNN...

Page 87: ...he normalization process for transmission measurements NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN TRACKNG ADJUST Allows you to adjust the tracking of the tracking generator output manually with the sweeping of the local oscillator by centering the signal response in the IF resolution bandwidth lters NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN TRACKNG PEAK Maximizes the amplitude of the active trace a...

Page 88: ... Restores the default menu for the user softkeys which consists of the following softkeys NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN RECALL USER Clears the current menu of user softkeys then loads the contents of a user softkey le into the user softkey menu NNNNNNNNNNNNNNNNNNNNNNNNNNNNN SAVE USER Stores the current menu of user softkeys in a user softkey le NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN catal...

Page 89: ...e Functions Limit Line Functions Marker Functions Memory Related Functions Power Meter Functions Preampli er Functions Preselector Functions Programming Related Functions Service Related Functions Signal Detection Functions Signal Identi cation Functions Signal Path Functions Sweep and Trigger Functions Trace Processing Functions Tracking Generator Functions User De ned Functions Note To locate in...

Page 90: ...for calibration and perform the calibration routines The calibration routines can be selected and run individually For a lightwave signal analyzer the lightwave signal path has been calibrated at the factory and does not require additional calibration However the RF or microwave signal path through the HP 70810B lightwave section is calibrated using the functions provided in this section Display F...

Page 91: ...cur if HSWP IN OUT on the HP 70810B lightwave section is not connected to HSWP IN OUT on the HP 70900B local oscillator source Limit Line Functions The limit line softkeys allow the user to de ne amplitude and frequency test parameters The limit line functions compare trace data to a set of amplitude and frequency test parameters while the analyzer is sweeping the measurement range The test parame...

Page 92: ... arrays of data for data processing Power Meter Functions The power meter softkeys control the adjustment annotation readout and calibration of a average power meter Both the HP 71400C lightwave signal analyzer and HP 71401C lightwave signal analyzer have an HP 70810B lightwave section installed that contains an internal average power meter CAUTION Inaccurate signal trace measurements can occur if...

Page 93: ...lled elements An interval of time passes while the analyzer sweeps and detects the analog signal If one sweep of trace data is divided into 800 increments of time the spectrum analyzer produces 800 trace elements The signal trace detection functions determine how the analyzer chooses one amplitude value for each element from the many amplitude values detected during one of these intervals of time ...

Page 94: ...he functions of a tracking generator module User De ned Functions The user de ned functions provide le management capabilities for softkey functions that have been created by the user User de ned functions can be placed in user memory from an internal or external memory activated to perform a user de ned task or deleted from memory The user can create softkey functions for unique or specialized me...

Page 95: ......

Page 96: ... On Off Turn on or o the three dimensional trace display capability The THREED command sets the number of previous traces to be displayed simultaneously as a three dimensional display function The function is activated when you enter a value between 1 and 650 or when you turn the function on This value is retained if you turn the function o It is not changed until you enter a di erent value Functi...

Page 97: ... For example the trace length is set to 1001 points and remote marker and trace queries are switched to HP 8566B spectrum analyzer units Functional Type programming related and service related Firmkey Access NNNNNNNNNNNNNN Misc Preset State O Not a ected by 4IP5 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa A A B adds traces A and B point by point then stores the results in trace A Functional Type active trace ...

Page 98: ...aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa A B DL On Off subtracts trace B from trace A point by point adds the value of the display line and then stores the results in trace A The process is continuous and occurs with each sweep Press NNNNNNNNNNNNNN Misc NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN DSP LIN On Off to position the display line See the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNN...

Page 99: ... device If trace A is in clear write mode when this function is executed the function is continuous See the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN CLEAR WRT A softkey description Functional Type tracking generator Firmkey Access NNNNNNNNNNNNNNNNN State Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ACTIVE MARKER selects a number from 1 to 5 for the active marker If ze...

Page 100: ...e made with the alternate detector by normalizing Use the NNNNNNNNNNNNNNNNNNNNNNN ALC ALT softkey for wideband applications for example 1 kHz to 100 MHz Functional Type tracking generator Firmkey Access NNNNNNNNNNNNNNNNN State Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ALC EXT external automatic level control The automatic level control of the source is connected to an external negative d...

Page 101: ...d error message may occur if NNNNNNNNNNNNNNNNNNNNNNN ALC NRM is executed for frequencies less than 10 MHz Functional Type tracking generator Firmkey Access NNNNNNNNNNNNNNNNN State Preset State On aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa alc track automatic level control and tracking adjustment selects the automatic level control type and tracking adjustments functions for the tracking generat...

Page 102: ...t any given time Functional Type active trace processing Firmkey Access NNNNNNNNNNNNNNNNN BWSwp Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa A6A DL A B C Performs trace math A DL A B C 7A with each sweep The ADAPBPCTL command requires a linear display mode It multiplies trace A by the display line and divides the result by the sum of traces A B and C The resul...

Page 103: ...ional Type active trace processing Firmkey Access NNNNNNNNNNNNNNNNN BWSwp Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa A6A DL C Performs trace math A DL C7A with each sweep The ADCTL command requires a linear display mode It multiplies trace A by the display line value then divides by trace C The results are stored in trace A If trace A is in clear write mode the function is continu...

Page 104: ...Firmkey Access NNNNNNNNNNNNNNNNN BWSwp Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa A6A0B DL Performs trace math A0B DL7A with each sweep The AMBPL command subtracts trace B from trace A point by point adds the display line to the di erence then stores the result in trace A When AMBPL is executed trace B is placed in view mode and cannot be swept If trace A is in clear write mode when A...

Page 105: ...cessing Firmkey Access NNNNNNNNNNNNNNNNN BWSwp Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa A6 A0B 0C DL Performs trace math A0B 0C DL7A with each sweep The AMBMCPL command subtracts both trace B and trace C from trace A and then adds the display line The results are stored in trace A If trace A is in clear write mode the function is continuous and occurs every sweep...

Page 106: ... sweep of measurement information Functional Type active trace processing Firmkey Access NNNNNNNNNNNNNNNNN BWSwp Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa A6A0C DL Performs trace math A0C DL7A with each sweep The AMCPL command subtracts trace C from trace A and then adds the display line The results are stored in trace A If trace A is in clear write mode the function is continuous an...

Page 107: ... a division by the smallest representable value will be performed instead To ensure that correct data is displayed be sure that a sweep is taken before using this command Only one trace math operation may be active at any given time Functional Type active trace processing Firmkey Access NNNNNNNNNNNNNNNNN BWSwp Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa A M...

Page 108: ...frequency value within the speci ed parameter range The 485 and 495 step keys change the value in a 1 3 10 sequence The knob changes the value continuously Functional Type tracking generator Firmkey Access NNNNNNNNNNNNNNNNN State Preset State 1 kHz or hardware limit aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa AM INT EXT amplitude modulation input selects the amplitude modulation input The s...

Page 109: ... LOWER amplitude corrections lower limit line stores amplitude correction values as a lower limit line Use this function to return previously used amplitude correction values to the lower limit line table for modi cation The amplitude corrections must rst be entered into the lower limit line table using the limit line softkey functions The limit line is then stored as amplitude correction values u...

Page 110: ...in internal memory DISPOSE ALL FORMAT and PERASE erase the amplitude correction pairs from memory Because AMPCOR adjusts IF gain or attenuation AMPCOR should be used with care when measuring signals near the compression level that are also at a frequency that is corrected by the AMPCOR command Functional Type amplitude Firmkey Access NNNNNNNNNNNNNNNNN Amptd Preset State O aaaaaaaaaaaaaaaaaaaaaaaaa...

Page 111: ...e Before using the amplitude reference o set function be sure to verify that the input signal is not excessive for the range of reference and attenuator settings that are used during the measurement When an o set is active it is added to all amplitude readouts including the marker threshold reference level display line and calibration power readouts ROFFSET appears at the top of the display The o ...

Page 112: ...NNNNNNNNNNNNNNNNNNNNNNNNN FREQ VALUE softkey descriptions Functional Type limit line Firmkey Access NNNNNNNNNNNNNN Misc Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ANALYZR TEST initiates a self test routine The analyzer test function initiates a self test of the currently con gured system Tests are performed automatically to determine if the instrument is working pro...

Page 113: ...4 1 Blanked Annotation Functional Type display Firmkey Access NNNNNNNNNNNNNN Misc Preset State On aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ANY CHR any character enters an ASCII character into the data line Enter a character by typing its 3 digit ASCII code Functional Type programming related Firmkey Access NNNNNNNNNNNNNN Misc Preset State O 4 18 Softkey Descriptions ...

Page 114: ...range for optical mode is half the range for electrical mode because of a factor of two di erence between optical and electrical display units when they are expressed in dB The attenuation range is also dependant on the lambda wavelength setting of 850 nm 1300 nm or 1550 nm See Table 4 1 Optical input attenuation is also coupled to the reference level When coupled the attenuator changes as the ref...

Page 115: ...tional Type amplitude Firmkey Access NNNNNNNNNNNNNNNNN Amptd Preset State Auto aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa AUTZERO On Off automatic zeroing selects automatic zeroing of o sets in the internal power meter of the lightwave section The signal trace measurement in progress is interrupted while the power meter is being zeroed The automatic zeroing function peri...

Page 116: ... First set up your measurement system to measure an open reference with Trace A then execute NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN STORE OPEN C Next set up your measurement system to measure a short reference with Trace A then execute NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN AVERAGE SHRT C Function executed is displayed when the average of the short and open references is stored If NNNN...

Page 117: ...pen 1st error message appears reminding you to store the open rst If NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN AVERAGE SHRT C is pressed when NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN A0C A On Off is on the Not stored A0x A on error message appears The short is not averaged NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN A0C A On Off must be in the o position Functional Type tracking generator F...

Page 118: ...aaaaaaaaaaaaaaaaaaaaaa B B DL subtracts the value of the display line from trace B then stores the result in trace B Press NNNNNNNNNNNNNN Misc NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN DSP LIN On Off to position the display line See the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN DSP LIN On Off softkey description Functional Type active trace processing Firmkey Access NNNNNNNNNNNNNNNNN BWSwp P...

Page 119: ... limits de ned in the limit line table FAIL is also displayed at the top of the display If the trace data passes the test limits PASS is displayed See the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LIMITS On Off softkey description Functional Type limit line Firmkey Access NNNNNNNNNNNNNN Misc Preset State O aaaaaaaaaaaaaaaaaaaaaa bias Access bias adjustment softkeys for an external mixer Functional...

Page 120: ...aaaaaaaaa BIAS On Off activates the softkey functions that control the bias current To deactivate the bias set the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN BIAS On Off softkey to o Functional Type external mixer Firmkey Access NNNNNNNNNNNNNNNNN State Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa BIAS PK MAX bias peak maximum sets the highest possible bias current available to t...

Page 121: ...l Type external mixer Firmkey Access NNNNNNNNNNNNNNNNN State Preset State Hardware dependent aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa BIAS PK RES bias peak resolution determines the number of possible bias currents that are available within a speci ed range The user sets the range using the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN BIAS PK MIN and NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN BIAS ...

Page 122: ...NNNNNNNNNNN BIAS PK START maintains the marker position but to ensure best results use as narrow a frequency span as possible The lowest and highest bias currents possible are determined by using NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN BIAS PK MIN and NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN BIAS PK MAX Functional Type external mixer Firmkey Access NNNNNNNNNNNNNNNNN State Preset State O aaaaaaaaaaaaaaaaaaa...

Page 123: ...aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa BNKSTRT On Off blank start on or o blanks all displayed trace information for frequencies prior to a calculated frequency point The frequency point is dependant on the span and resolution bandwidth setting of the analyzer The calculated frequency point decreases when either the span or the resolution bandwidth is reduced The selected start frequency se...

Page 124: ...tion is preset to o For a lightwave signal analyzer the blank start function is preset on at instrument preset and is automatically enabled whenever the lightwave input is selected Functional Type frequency Firmkey Access NNNNNNNNNNNNNN Freq Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa B XCH C exchanges the contents of the trace B and C registers Functional Type active trace processing Firm...

Page 125: ...ion routine is then performed through the RF signal path When the calibration routine is complete the input port selection is Functional Type calibration Firmkey Access NNNNNNNNNNNNNNNNN Amptd Preset State Interrupted aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa cal enable accesses softkeys that control the usage of the system correction factors Functional Type calibration Firmkey Access NNN...

Page 126: ...n Firmkey Access NNNNNNNNNNNNNNNNN Amptd Preset State Interrupted aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa CAL LOGAMP corrects errors in the logarithmic ampli ers in the IF section Functional Type calibration Firmkey Access NNNNNNNNNNNNNNNNN Amptd Preset State Interrupted aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa cal menu accesses the system calibration softkeys Functional Type calibrati...

Page 127: ... internal or external switches between an internal or external calibration reference When set to external the spectrum analyzer executes the calibration routine using the signal at the RF INPUT port for reference When set to internal the spectrum analyzer calibrates with an internal calibration reference such as the one in the external mixer interface module Instrument preset sets the calibration ...

Page 128: ...ted by 4IP5 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa CAL VID BW corrects amplitude and frequency anomalies in the video bandwidth lters in the IF section Functional Type calibration Firmkey Access NNNNNNNNNNNNNNNNN Amptd Preset State Interrupted aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa CANCEL cancels the various memory erase operations Functional Type service related and memory related Firmkey Ac...

Page 129: ...NNNNNNNNNNNNNNN INTRNL MEMORY NNNNNNNNNNNNNNNNNNNNNNNNNNNNN HPIB DISK and NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN HP MSIB CARD softkeys to select memory before executing NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN catalog MSI Table 4 2 describes le naming used with user memory Figure 4 2 illustrates a displayed catalog of external memory from a memory card Figure 4 2 Catalog of User Memory with Exter...

Page 130: ...SAVE USERKEY NNNNNNNNNNNNNNNNNNNNNNNNNNNNN SAVE USER NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN RECALL USERKEY NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN RECALL USER NNNNNNNNNNNNNN LOAD ASCII u Limit line le NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN SAVE LIMIT NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN RECALL LIMIT NNNNNNNNNNNNNN LOAD ASCII l User de ned trace y TRDEF or LIMILINE command TRACE none User de...

Page 131: ...aaaaaaaaaaaa CENTER speci es the center frequency Functional Type frequency Firmkey Access NNNNNNNNNNNNNN Freq Preset State Hardware dependent aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa CENTER DELTA Adjust the delta value for performing preselector centering Functional Type preselector Firmkey Access NNNNNNNNNNNNNN Freq Preset State 0 Hz 4 36 Softkey Descriptions ...

Page 132: ...NNNNNNNNNNNNNNNN Marker Preset State Markers o aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa CF STEP marker to center frequency step size sets the center frequency step size equal to the frequency di erence between the reference and active markers See the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN MKR NRM On Off and NNNNNNNNNNNNNNNNN DELTA softkeys descriptions Functional Type marker Firmke...

Page 133: ...size Instrument preset resets the step size to the default setting Functional Type frequency Firmkey Access NNNNNNNNNNNNNN Freq Preset State Set to SPAN 10 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa CHANGE PREFIX allows the user to change the le pre x for les that are stored in memory Each le has an identifying pre x which distinguishes one type of le and its contents from th...

Page 134: ...Type programming related and display Firmkey Access NNNNNNNNNNNNNN Misc Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa CLEAR WRT A clear write trace A continuously displays any signals detected at the spectrum analyzer input for the related trace Initially clear write clears the trace register setting all trace amplitudes to zero When the trigger initiates a sweep the trace...

Page 135: ...onal Type active trace processing Firmkey Access NNNNNNNNNNNNNNNNN BWSwp Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa CLEAR WRT C clear write trace C continuously displays any signals detected at the spectrum analyzer input for the related trace Initially clear write clears the trace register setting all trace amplitudes to zero When the trigger initiates a sweep the trac...

Page 136: ... examine all of the DAC values that were used to arrive at the nal DAC values Functional Type preselector Firmkey Access NNNNNNNNNNNNNN Freq Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa CLOSE PIT Repositions the active marker on the trace and selects the closest pit Functional Type marker Firmkey Access NNNNNNNNNNNNNNNNNNNN Marker Preset State O Softkey Descriptions 4 41 ...

Page 137: ... with the use of a computer However for times when a computer is not available the NNNNNNNNNNNNNNNNNNNNNNN COMMAND softkeys may be used to execute functions not available at the front panel Refer to the HP 70000 Modular Spectrum Analyzer Programming Manual for the spectrum analyzer functions that cannot be executed with the menu softkeys directly A character list is displayed when the NNNNNNNNNNNN...

Page 138: ...user de ned functions are created or changed more easily using a computer However the NNNNNNNNNNNNNNNNNNNNNNN COMMAND softkeys can be useful when the user de ned functions or their changes are brief Refer to the HP 70000 Modular Spectrum Analyzer Programming Manual User de ned functions are created or edited in the data line at the bottom of the display Any user de ned function algorithms stored i...

Page 139: ...ch module in the system by column and row number Also given are identi cation and revision numbers Figure 4 4 illustrates an example of the information displayed after pressing the NNNNNNNNNNNNNNNNNNNN CONFIG softkey Figure 4 4 NNNNNNNNNNNNNNNNNNNN CONFIG Displays System Con guration Functional Type instrument state Firmkey Access NNNNNNNNNNNNNNNNNNNN Traces Preset State O 4 44 Softkey Description...

Page 140: ...NNNNNNNNNNNNN Misc Preset State On aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa CONFIRM ERASE erases memory when pressed Functional Type memory related Firmkey Access NNNNNNNNNNNNNNNNNNNN Traces Preset State On aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa CONFIRM RESTART Con rms that you really want to perform a restart If you press this key it bre...

Page 141: ...continuous sweep sweeps the measurement range when the trigger conditions are met The sweep is suspended momentarily when new data is entered from the front panel or via HP IB The MEASURE indicator on the front panel of the local oscillator module is on when the sweep is in progress The indicator is o between sweeps and frequency bands during data entry and for sweep times less than or equal to 10...

Page 142: ...nput softkey description Functional Type external mixer Firmkey Access NNNNNNNNNNNNNNNNN State Preset State Depends on NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN preset input setting aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa COUPLNG AC DC activates ac or dc coupling for the spectrum analyzer input Coupling options vary from system to system When a microwave RF module such as HP ...

Page 143: ...G and VAVG may di er since multiple power meter readings may be taken per sweep If an attempt is made to turn PWRAVG for a signal path which does not have a power meter a Hardware not present error will be reported Functional Type amplitude Firmkey Access NNNNNNNNNNNNNNNNN Amptd Preset State On aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa CPL DET On Off Control the couplin...

Page 144: ... dBm Functional Type amplitude Firmkey Access NNNNNNNNNNNNNNNNN Amptd Preset State On aaaaaaaaaaaaaaaaaaaaaa dB V allows the amplitude readout annotation for the reference level marker display line and threshold to be changed to dB V Functional Type amplitude Firmkey Access NNNNNNNNNNNNNNNNN Amptd Preset State Not a ected by 4IP5 Softkey Descriptions 4 49 ...

Page 145: ...aaaaaaaaaaa debug accesses the program debugging softkey functions Functional Type programming related Firmkey Access NNNNNNNNNNNNNN Misc Preset State Not a ected by 4IP5 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa DEBUG FAST activates a fast debugging routine that executes the program quickly and is useful for trapping errors Use the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN DEBUG FAST softkey to i...

Page 146: ... routine has a fast and slow setting that is activated by pressing either NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN DEBUG FAST or NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN DEBUG SLOW Since the debug routine slows execution of analyzer commands it should be turned o when not needed Use the NNNNNNNNNNNNNNNNN PAUSE softkey to stop the program momentarily Pressing NNNNNNNNNNNNNN CONT resumes program operation unless a ...

Page 147: ...r commands it should be turned o when not needed Functional Type programming related Firmkey Access NNNNNNNNNNNNNN Misc Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa DEFINE USR KEY incorporates menu softkeys into the user softkey menu and may be used to erase softkeys individually from the user softkey menu Functional Type user de ned Firmkey Access NNNNNNNNN...

Page 148: ...ype limit line Firmkey Access NNNNNNNNNNNNNN Misc Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa DELETE CHAR deletes individual characters at the entry window position on the data line The NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN DELETE CHAR softkey is active when NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN DELETE or is selected Use the 485 and 495 step keys to move the entry window ...

Page 149: ...used as a display function this menu key allows characters to be deleted from the text that appears to the left of the TITLE entry window at the bottom of the display Position the entry window in the TITLE data line under the character that is to be deleted using the step keys Use the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN DELETE CHAR softkey to remove the desired character To display the modi ed tex...

Page 150: ...positioned in terms of frequency or time if the analyzer is in zero span mode NNNNNNNNNNNNNNNNN DELTA activates the relative marker mode which displays two markers and calculates the frequency and amplitude di erence between them Functional Type marker Firmkey Access NNNNNNNNNNNNNNNNNNNN Marker Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa detectr accesses the signal detection mode softkeys ...

Page 151: ...MAX HOLD Negative peak detection is activated by the minimum hold softkey NNNNNNNNNNNNNNNNNNNNNNNNNN MIN HOLD If more than one of the above conditions are met the rst condition has priority followed by the second condition Set NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN DETECTR AutoMan to manual to restrict control of peak detection to the detector mode softkeys only Functional Type signal det...

Page 152: ...rent display units If a detector is selected that is not available the HARDWARE NOT PRESENT error will occur If the current path does not have the requested detector type available the HARDWARE NOT PRESENT error will also occur Functional Type signal detection Firmkey Access NNNNNNNNNNNNNNNNNNNN Traces Preset State LOG aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa DISPOSE USER erases...

Page 153: ...a user de ned function on the data line for editing NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN EDIT FUNCDEF fetches the de nition from internal memory CAUTION Do not use the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN EDIT FUNCDEF softkey to modify user de ned functions comprising more than 239 characters This can destroy the function User de nition of traces variables and functions override standard comma...

Page 154: ... the displayed limit line parameters to be edited Functional Type limit line Firmkey Access NNNNNNNNNNNNNN Misc Preset State Not a ected by 4IP5 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ENTER COMMAND executes the contents of the data line when it contains properly constructed programming command statements Functional Type programming related Firmkey Access NNNNNNNNNNNNNN Mi...

Page 155: ...nd NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LAST SEGMENT softkeys Functional Type limit line Firmkey Access NNNNNNNNNNNNNN Misc Preset State Not a ected by 4IP5 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ENTER LINE enters the text created by the user in the TITLE entry window into the title display line at the top of the display The title is displayed until an instrument preset is performed ...

Page 156: ...se of the NNNNNNNNNNNNNNNNNNNNNNNNNNNNN ERASE ALL softkey erases all user memory Any memory protection provided by other system softkey functions is disabled when this function is used Use the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NEXT INSTR softkey to reestablish the desired instrument con guration Functional Type service related Firmkey Access NNNNNNNNNNNNNN Misc Preset State Not a ected by 4IP5 aaaa...

Page 157: ... Type user de ned programming related and memory related Firmkey Access NNNNNNNNNNNNNN Misc Preset State Not a ected by 4IP5 aaaaaaaaaaaaaaaaa EXT external trigger synchronizes the sweep with an external signal The minimum and maximum value of the external signal must be 0 V and 5 V Connect the trigger signal to the EXT TRIG IN port on the local oscillator rear panel Functional Type sweep and trig...

Page 158: ...f the instrument This screen is not continuously updated Figure 4 5 illustrates an example of the information displayed after pressing the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN EXTEND STATE softkey Figure 4 5 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN EXTEND STATE Lists Module Level Parameters Functional Type instrument state Firmkey Access NNNNNNNNNNNNNNNNNNNN Traces Preset State O Softkey Descripti...

Page 159: ...rt located on the rear panel of an HP 70908A RF section You can then lter and detect the video information contained in the 321 4 MHz signal with your own lters and detectors The NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN EXT IF On Off softkey is enabled only when the input port of an HP 70908A RF section is active Otherwise an error occurs Functional Type signal path Firmkey Access NNNNNNNNNNNNNNN...

Page 160: ...y not actually disable external video output in all modules Hardware not present will be reported if an unsupported switch position is requested Not all external video switches support all values The only module currently supporting a value other than NONE is the HP 70911A WB IF section These values are only available when the HP 70911A WB IF section is the active IF The following are the supporte...

Page 161: ...tializes the card with the logical interchange le LIF format See the description for the PROTECT programming command in the HP 70000 Modular Spectrum Analyzer Programming Manual Also see the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN P STATE On Off softkey description Functional Type memory related Firmkey Access NNNNNNNNNNNNNNNNNNNN Traces Preset State O aaaaaaaaaaaaaaaaaaaaaa FREQ frequency de...

Page 162: ...to 321 4 MHz Functional Type calibration Firmkey Access NNNNNNNNNNNNNNNNN Amptd Preset State Depends on NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN preset input setting aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa FREQ OFFSET frequency o set o sets the value of absolute frequency annotation When on FOFFSET is displayed The o set does not a ect the actual measurement range or the frequency re...

Page 163: ...tate O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa FRQ LIM On Off frequency limit enables measurements beyond 22 GHz The softkey is present only if an HP 70908A RF section is installed in the system and its input port has been selected using the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN select input softkey Set the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN FRQ LIM On Off ...

Page 164: ...nts made with external mixers Twelve frequency bands are available Table 4 3 lists the start and stop frequencies of each band and also shows which local oscillator harmonic N is used for the mixing process Once a band is selected the frequency range is locked and the spectrum analyzer tunes with the local oscillator harmonic for that band only Table 4 3 External Mixing Bands and Associated Mixing...

Page 165: ...GHz when an HP 70906A RF section RF Section module is installed in the system and its input port has been selected using the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN select input softkey Functional Type frequency Firmkey Access NNNNNNNNNNNNNN Freq Preset State On aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa GAINCAL On Off disables the correction factors that compensate for e...

Page 166: ...NNNNNNNNNNNN Misc Preset State On aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa GRATSCR On Off Controls the positioning of the displayed horizontal graticule lines When a log scale is displayed the GRATSCRL command positions the horizontal graticule lines on multiples of the current dB per div scale When GRATSCRL is set to o the horizontal graticule lines are evenly spaced ...

Page 167: ...aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa HIGHEST PEAK moves the marker to the peak of the highest level signal detected Figure 3 1 illustrates the use of the marker softkey function Note NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN HIGHEST PEAK moves the marker to the IF or local oscillator feedthrough signal if either is higher than any of the trace values See the NNNNNNNNNNNNNNNNNNNNNNNN...

Page 168: ...e On aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa HORZ OFFSET Select the horizontal o set of the three dimensional trace display The THREEDH command allows you to change the horizontal position of the traces left or right of a three dimensional trace display The function is activated with the THREED command plus a value between 0 and 6200 The horizontal position of the traces is retaine...

Page 169: ... disk drive The default selection is HP IB address 0 unit 0 volume 0 To enter new values press NNNNNNNNNNNNNNNNNNNNNNNNNNNNN HPIB DISK and enter numbers in the following sequence The rst number is for the HP IB address The second number is for unit The third number is for volume The second and third numbers are preceded by a period For example NNNNNNNNNNNNNNNNNNNNNNNNNNNNN HPIB DISK 1 NNNNNNNNNNNN...

Page 170: ...SIB the number that NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN HP MSIB CARD speci es is the column address If you wish to store on a device that is not at row zero calculate the HP MSIB address as follows HP MSIB address column address row address 2 32 To look up the HP MSIB address of a device or display press 4DISPLAY5 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN address map Use the front panel knob to locat...

Page 171: ...mine the frequency range for possible image or harmonic responses by selecting the lowest and highest local oscillator harmonic used for mixing according to the tuning equation below Fs N 2 FLO 6 IF Where Fs displayed response FLO is the local oscillator fundamental frequency which sweeps from 3 GHz to 6 6 GHz N is the local oscillator harmonic speci ed by NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN...

Page 172: ... 19 9 3 19 7 22 0 26 5 4 Internal Mixing HP 71200C 2 9 6 2 01 6 0 12 8 02 12 6 22 0 04 External Mixing HP 70907A K 18 0 26 5 6 A 26 5 40 0 8 Q 33 0 50 0 10 U 40 0 60 0 10 V 50 0 75 0 14 E 60 0 90 0 16 W 75 0 110 0 18 F 90 0 140 0 24 D 110 0 170 0 30 G 140 0 220 0 36 Y 170 0 260 0 42 J 220 0 330 0 50 Functional Type signal identi cation Firmkey Access NNNNNNNNNNNNNN Freq Preset State 40 Softkey Des...

Page 173: ...supports it aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa INPUT IMPED input impedance speci es the value of input impedance expected at the active input port The actual input impedance does not change The input impedance setting a ects all amplitude information including the values of amplitude readouts trace arrays and returned amplitude data Functional Type amplitude Firmkey Access NNN...

Page 174: ...NNNNNNNNNNNN COMMAND softkey Display Function When being used as a display function this menu key allows characters to be inserted into the text that appears to the left of the TITLE entry window at the bottom of the display Position the entry window on the TITLE data line over the character that is to be inserted using the step keys Use the front panel knob to select the desired character from th...

Page 175: ...nly numbers not units are displayed The units are the same as for the RL display The precision of the annotation will be the same as for the RL display with the exception that there is an upper limit of ve signi cant digits due to limited screen space The values displayed can be a ected by the RL RLPOS LG LN and GRATSCRL commands as well as any other state changes that a ects the RL and the y axis...

Page 176: ...NNNNNNNN LAMBDA are Calibrated 1300 nm or 1550 nm wavelength operation for a standard HP 70810B lightwave section Calibrated 850 nm wavelength operation for an HP 70810B Option 850 lightwave section The operating wavelength depends on the lightwave signal source that is applied to the input Select the lambda wavelength that is closest to the wavelength of the lightwave signal source Changing lambd...

Page 177: ...the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LCL OSC START and NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LCL OSC STOP functions can adjust the local oscillator sweep for use as a signal source at the First LO Auxiliary Output port When using an external mixer and the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LOCK HARMNC softkey the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LCL OSC START and NNNNNNNNNNN...

Page 178: ...NNNNNNNNNN LCL OSC START and NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LCL OSC STOP softkeys can be used to selectively modify the measurement range See the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LOCK HARMNC softkey description Functional Type service related Firmkey Access NNNNNNNNNNNNNN Misc Preset State Set to highest frequency allowed by hardware aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa LEFT...

Page 179: ...nctions Note Two sets of amplitude correction values for the same frequency range can be stored as an upper and lower limit line Each set of amplitude corrections can be recalled using either the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LOWER AMPCOR or NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN UPPER AMPCOR softkey Only one set of corrections can be entered as an AMPCOR value at a time Funct...

Page 180: ...isables the blank start function and sets the start frequency to either a value eight times the resolution bandwidth or 100 kHz whichever is greater The purpose of this function is to prevent display of the local oscillator feedthrough signal when making measurements near zero frequency When the limit start function is activated the resolution bandwidth function automatically becomes the active pa...

Page 181: ...aaaaaaaaaaaaaaaaaa LINEAR places the analyzer in linear power mode scaling the graticule in linear units proportional to the input power The bottom of the graticule line represents 0 watts The NNNNNNNNNNNNNNNNNNNN LINEAR softkey is available only for systems that have an HP 70810B lightwave section installed The softkey is enabled only when a lightwave signal path and optical mode have been select...

Page 182: ...NNNNNNNNNNNNNNN LINEAR softkey See the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN select input softkey description Functional Type amplitude Firmkey Access NNNNNNNNNNNNNNNNN Amptd Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa LINES On Off changes the appearance of displayed trace information The spectrum analyzer displays digitized trace information This means that a sweep...

Page 183: ...NNNNNNNNNNNNNNN catalog MSI to view the catalog 2 To recall a le press NNNNNNNNNNNNNNNNNNNNNNNNNNNNN LOAD FILE followed by the entry number then press NNNNNNNNNNNNNNNNN ENTER The following is an example of loading a le from external memory a memory card Refer to the catalog of external memory illustrated by Figure 4 6 To load the program le called demo press NNNNNNNNNNNNNNNNNNNNNNNNNNNNN LOAD FILE...

Page 184: ...lows Fs N 2 FLO 6 FIF where Fs is the displayed response FLO is the local oscillator fundamental frequency which sweeps from 3 GHz to 6 6 GHz N is local oscillator harmonic speci ed by NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LOCK HARMNC FIF is the spectrum analyzer IF which equals 321 4 MHz The lock harmonic softkeys also specify the sign positive or negative of the IF component in the mixing equat...

Page 185: ...TATN lockout annotation turns the displayed annotation o The annotation cannot be displayed again until either an instrument preset is performed or the system power is cycled Annotation for instrument states that have been saved using the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN SAVE STATE softkey will be blanked when recalled Refer to Figure 4 1 See the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN ANOTAT...

Page 186: ...mkey Access NNNNNNNNNNNNNNNNN Amptd Preset State On aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa LOG dB DIV logarithmic scale scales the graticule in logarithmic units from 0 01 to 20 dB per division Functional Type amplitude Firmkey Access NNNNNNNNNNNNNNNNN Amptd Preset State 10 dB for spectrum analyzer and 5 dB for lightwave aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...

Page 187: ...ng at the lowest frequency point divide the frequency range into segments where the amplitude either remains at or has a measurable slope For frequency segments that slope record the frequency and amplitude of the beginning point and end point of the segment For frequency segments that are at record the frequency and amplitude of the rst point of the segment only Enter these correction values into...

Page 188: ...ightwave carrier are detected and displayed referenced to the optical input connector Selecting electrical mode calibrates the display in electrical units Modulated signals on the lightwave carrier are detected and displayed The trace mode and power meter annotation can be selected in four con gurations The table below illustrates the available annotation selections Trace Mode and Power Meter Anno...

Page 189: ...ey Access NNNNNNNNNNNNNNNNNNNN Marker Preset State Not a ected by 4IP5 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa MAX HOLD A aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa MAX HOLD B aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa MAX HOLD C maximum hold compares the current amplitude value of each point on a trace to each corresponding value detected during the previous sweep then ...

Page 190: ...put softkey is set to automatic the maximum expected signal level is equal to the reference level Functional Type amplitude Firmkey Access NNNNNNNNNNNNNNNNN Amptd Preset State Auto 0 dBm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa MAX MXR LEVEL maximum mixer level speci es the maximum signal level at the mixer input This function determines the coupling ratio between the atten...

Page 191: ...aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa MINIMUM PEAK moves the marker to the lowest detected peak level on the trace Functional Type marker Firmkey Access NNNNNNNNNNNNNNNNNNNN Marker Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa MINIMUM POINT moves the marker to the lowest detected level on the trace Figure 3 1 illustrates the use of the marker s...

Page 192: ...NNNNNNNNNNNNNN Marker Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa MIN POINT Moves the displayed marker to lowest signal level in trace The MKMIN command moves the active marker to the minimum value detected MKMIN operates on the displayed active trace or if more than one is displayed it operates on trace A B or C in that order or on the trace speci ed by MKTRACE Functional Type ma...

Page 193: ...and response The marker noise function activates sample peak detection Functional Type marker Firmkey Access NNNNNNNNNNNNNNNNNNNN Marker Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa MKPAUSE On Off marker pause on o stops the sweep at the marker position from 0 to 1000 seconds Press NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN MKPAUSE On Off to select the pau...

Page 194: ...NN REL RIGHT softkeys to position the markers on the desired signal See the NNNNNNNNNNNNNNNNNNNNNNNNNN REL LEFT and NNNNNNNNNNNNNNNNNNNNNNNNNNNNN REL RIGHT softkey descriptions Functional Type marker Firmkey Access NNNNNNNNNNNNNNNNNNNN Marker Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa mkr bw zoom bw marker bandwidth and zoom bandwidth accesses the marker b...

Page 195: ...nd their readouts and reset the active marker number to 1 Instrument preset turns o all markers and their annotation resets the active marker number to 1 and resets the marker pause time to zero NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN MKR NRM On Off does not change the time interval for the marker pause function when it is turned o Functional Type marker Firmkey Access NNNNNNNNNNNNNNNNNNNN Ma...

Page 196: ... C speci es whether the active marker is positioned on trace A B or C After instrument preset trace A is selected Functional Type marker Firmkey Access NNNNNNNNNNNNNNNNNNNN Marker Preset State Trace A selected Trace B and C o aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa NEG PK negative peak detector displays the minimum signal level detected during each sample interval Signal responses may not appear when meas...

Page 197: ...K moves the marker to the next lowest detected peak level on the trace Functional Type marker Firmkey Access NNNNNNNNNNNNNNNNNNNN Marker Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa NEXT PAGE provides view of next page of information Functional Type instrument state and memory related Firmkey Access NNNNNNNNNNNNNNNNNNNN Traces Preset State O 4 102 Softkey Descriptions ...

Page 198: ...n to learn about the related instrument settings that increase the e ectiveness of the next peak marker Functional Type marker Firmkey Access NNNNNNNNNNNNNNNNNNNN Marker Preset State Markers o aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa NEXT PIT Moves the marker to the signal peak of greatest amplitude that is greater than the current marker amplitude See the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN P...

Page 199: ... O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa NO OF STATES number of states adds or deletes state register les and their contents from user memory When the number of les is decreased the higher numbered les are deleted and their contents are lost Since state register les occupy large amounts of memory conserve memory space by limiting their number Functional Type instrum...

Page 200: ...ctor from analog information that is continuously changing amplitude values into digital information comprising a series of nite data points The translation process divides the analog information into intervals then chooses a value from each interval as the data point element The result is a combination of positive and negative peak detection where the minimum value detected in one interval is dis...

Page 201: ...eset State Not a ected by 4IP5 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa OVERSWP On Off oversweep on or o allows faster sweep times up to ve times faster when speci ed accuracy is not required and the UNCAL indicator is undesirable NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN OVERSWP On Off allows an additional 2 of frequency error and 2 dB of amplitude error before the...

Page 202: ... the MMS system is modular the input signal can pass through di erent paths For example two signal paths are available for 100 kHz ltering when both the narrowband HP 70902A IF section and wideband HP 70903A IF section IF Sections are incorporated into one system If NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PATHLOK On Off is set to on when the 3 MHz lter is active the signal path remains in the...

Page 203: ...rsion rate is less than 6 dB the marker peaking functions may not recognize signals less than 6 dB above the noise oor as peaks Thus before applying the marker peaking functions to signals near the noise oor the peak excursion rate must be reduced However reducing the peak excursion rate to values less than 6 dB often causes the marker peaking functions to identify noise spikes as signals Avoid th...

Page 204: ...hen set to on NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PERSIST On Off displays the current sweep of active trace data and the six previous sweeps of active trace information To enhance the persistence e ect set sample detection mode with NNNNNNNNNNNNNNNNNNNN SAMPLE and set NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LINES On Off to o Spurious signals hidden in modulated signals can often be seen us...

Page 205: ...that any pit with an excursion of less than 3 dB on either side of its bandwidth shape is not identi ed as a pit If the marker pit command MKPK MIPIT is executed on such a pit the spectrum analyzer does not place a marker at the pit For signals displayed on a linear scale the default pit excursion equals excursion 1 010 0MKPITX 200 Note that if the pit excursion is too small noise pits are identi ...

Page 206: ...aaaaaaaaaaaaa power accesses the source power softkey functions Functional Type tracking generator Firmkey Access NNNNNNNNNNNNNNNNN State Preset State Not a ected by 4IP5 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa POWER FOR CAL calibration power speci es the power of the calibration reference Instrument preset sets the calibration power to 010 dBm When an external mixer inter...

Page 207: ...P5 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa POWERON IP LAST speci es the instrument state when the instrument is turned on To con gure the analyzer so that the last state the analyzer was in when power was removed becomes the instrument preset state set the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN POWERON IP LAST softkey to last To con gure the analyzer so ...

Page 208: ... if necessary to change the signal path Functional Type power meter Firmkey Access NNNNNNNNNNNNNNNNN Amptd Preset State Hardware dependent aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa PREAMP N On Off Turns on a preampli er The value of N depends on the number of preampli er modules that are installed in the system The modules are displayed in a sequence that is depend...

Page 209: ... nds the DAC values that correspond to the delta signal values The result is the average of the left and right DAC values Functional Type preselector Firmkey Access NNNNNNNNNNNNNN Freq Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa presel center accesses the softkeys that control the preselector centering functions Functional Type preselector Firmkey Access NNNNNNN...

Page 210: ...PRESEL DAC places a marker at the center of the display Functional Type preselector Firmkey Access NNNNNNNNNNNNNN Freq Preset State Set to midrange of DAC values aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa pre select accesses the softkeys that control the preselector functions The softkey is present if the system includes a module with preselector capabilities Functional Type preselector Fi...

Page 211: ...NNNNNNNNNNNNNNNNNNNNNNNN PRESEL HYS softkey change the center frequency and press NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PRESEL HYS Sweep the measurement range once Table 4 15 Frequency Ranges and Corresponding Harmonic Numbers Band Range Harmonic Number and Sign of IF N Internal Mixing HP 71210C 2 9 6 2 01 6 0 12 7 02 12 5 19 9 3 19 7 22 0 26 5 4 Internal Mixing HP 71200C 2 9 6 2 01 6 0 12 8 02 12 6 22...

Page 212: ...ator inside the preselector instead of the attenuator inside an RF section module regardless of the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PRESEL On Off setting CAUTION If you bypass the preselector by connecting the input signal directly to an RF section input the attenuator inside the RF section module is not operative To avoid damage to the spectrum analyzer measure signals at the preselecto...

Page 213: ... 2 GHz 2 6 0 GHz to 12 7 GHz 3 12 5 GHz to 19 9 GHz 4 19 7 GHz to 22 0 GHz Whenever a measurement is made the current preselector DAC value corresponding to the selected measurement range determines the preselector tracking Press NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PRESEL PEAK to repeak the preselector and store a new When measuring frequency spans greater than 0 Hz the analyzer must be swept at l...

Page 214: ...the HP MSIB address of each module Functional Type instrument state Firmkey Access NNNNNNNNNNNNNNNNNNNN Traces Preset State Not a ected by 4IP5 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa preset input determines which input port is active after instrument preset is executed The preset input softkey accesses a menu of the input ports available in your analyzer system The sequence of...

Page 215: ...te NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PRESET USER if you want to keep the current menu of user softkeys Functional Type user de ned Firmkey Access NNNNNNNNNNNNNN Misc Preset State Not a ected by 4IP5 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa P STATE On Off protect state protects the contents of all state register les When set to on none of the les can be altered or del...

Page 216: ...NNNNNNNN PURGE FILE enter the entry number with the numeric keypad then press NNNNNNNNNNNNNNNNN ENTER Functional Type memory related Firmkey Access NNNNNNNNNNNNNNNNNNNN Traces Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa PWR AVG On Off Control video averaging of the power meter value The PWRAVG command does for power meter readings what the VAVG command does...

Page 217: ...utomatically enabled when the analyzer is switched on a lightwave signal path is selected or an instrument preset is performed The power bar readout value does not automatically change when switching the signal trace between optical mode and electrical mode The power bar can be set to readout in optical units or electrical units using the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PWR MTR Opt...

Page 218: ...SWP On Off source power sweep works in conjunction with the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN SRC PWR On Off softkey to sweep the amplitude level of the source output The source power function determines the amplitude level at the beginning of the sweep The power sweep function determines the amplitude level at the end of the sweep relative to the beginning of the sweep For example if N...

Page 219: ... bandwidth and span settings When the resolution bandwidth is coupled the spectrum analyzer automatically selects a particular resolution bandwidth The ratio is determined as follows resolution bandwidth span 2 N The preset value for N is 0 01 Use NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN RB SPAN RATIO to select another value for N between 100100 and 10 100 Functional Type bandwidth Firmkey Access...

Page 220: ... aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa RBW FREQ On Off disable the frequency correction factors to the local oscillator The corrections are disabled when the softkey is set to o These corrections improve the frequency accuracy of displayed measurement results by compensating for irregularities in the IF section resolution bandwidth lters Set the softkey functio...

Page 221: ...NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN READ AutoMan to automatic or press 4INSTR PRESET5 to return the marker readout to normal operation Functional Type marker Firmkey Access NNNNNNNNNNNNNNNNNNNN Marker Preset State Auto aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa recall accesses the memory retrieval softkey functions Functional Type memory related Firmkey Access NNNNNNNNNNNNNNNNNNNN Traces Preset State Not a ected...

Page 222: ...NNNNNNNNNNNNNNNNNN RECALL LIMIT fetches limit line parameter les from the currently selected user memory To select a user memory area for recall of limit line parameters select one of the following softkeys accessed by pressing the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN catalog MSI softkey NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN HP MSIB CARD NNNNNNNNNNNNNNNNNNNNNNNNNNNNN HPIB DISK NNNNNNNNNNNNNN...

Page 223: ...he currently selected user memory To select a user memory area press NNNNNNNNNNNNNN Misc NNNNNNNNNNNNNN MORE NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN catalog MSI then select one of the following softkeys NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN HP MSIB CARD NNNNNNNNNNNNNNNNNNNNNNNNNNNNN HPIB DISK NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN INTRNL MEMORY To recall a le press NNNNNNNNNNNNNNNNNNNNNNNNNN...

Page 224: ...ent menu of user softkeys then loads the contents of a user softkey le into the user softkey menu NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN RECALL USER fetches les from the currently selected user memory To select a user memory area press NNNNNNNNNNNNNN Misc NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN MORE 1 of 3 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN catalog MSI then select one of the following softkeys NNN...

Page 225: ...call a le press NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN RECALL USERKEY enter the le number using the numeric keypad then press NNNNNNNNNNNNNNNNN ENTER The operation of NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN RECALL USERKEY and NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN RECALL USER are identical Functional Type memory related and instrument state Firmkey Access NNNNNNNNNNNNNNNNNNNN Traces Preset...

Page 226: ...softkey description Functional Type amplitude Firmkey Access NNNNNNNNNNNNNNNNN Amptd Preset State 010 dBm for spectrum analyzer and 0 dBm for lightwave aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa REF LVL POSN repositions the reference level on any of the major graticule lines during logarithmic mode The top line position is 10 and the bottom line position is 0 When the reference le...

Page 227: ...r 1 NNNNNNNNNNNNNNNNNNNNNNNNNN REL LEFT makes marker 1 a reference marker and marker 2 an active amplitude left marker NNNNNNNNNNNNNNNNNNNNNNNNNN REL LEFT activates the relative marker mode which displays two markers and calculates the frequency and amplitude di erence between them When this mode is active the marker annotation shows the amplitude di erence between the amplitude left and reference...

Page 228: ...ER RANGE is also displayed Use the numeric keypad to enter a value for the relative power marker position The 485 and 495 step softkeys change the marker position by one horizontal graticule division Use the front panel knob to make small changes to the marker position If NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN REL PWR On Off is on and the signal path is changed to an RF path the marker norma...

Page 229: ...NNNNNNNNNNNNNNNNNNNNNNNNNNN SELECT CHAR softkey To execute the modi ed program press the NNNNNNNNNNNNNNNNNNNNNNN COMMAND softkey Display Function When being used as a display function this menu key allows characters to be replaced in the text that appears to the left of the TITLE entry window at the bottom of the display Use the step keys to position the entry window on the TITLE data line under t...

Page 230: ...ion bandwidth value is selected the functions are uncoupled and the resolution bandwidth softkey setting switches to manual When they are uncoupled the resolution bandwidth uncoupled indicator appears as shown in Figure 4 8 Set the softkey to automatic to reestablish coupling See the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN RB SPAN RATIO softkey description Figure 4 8 Coupling and Accuracy Indica...

Page 231: ...HT PEAK moves the marker to the closest signal peak of higher frequency Figure 3 1 illustrates the use of the marker softkey function See the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PEAK EXCURSN softkey description to learn about the related instrument settings that increase the e ectiveness of the right peak marker Functional Type marker Firmkey Access NNNNNNNNNNNNNNNNNNNN Marker Preset State Mark...

Page 232: ...el at the marker position and the average optical power Utilizing the marker noise function the noise level of the active marker is read out and normalized to a 1 Hz bandwidth The average power value is then subtracted from the value of the marker noise The resulting value is displayed in electrical dB units below the frequency readout for the marker The units annotation for the relative intensity...

Page 233: ...ity value for the lightwave section This function is available only when lightwave electrical mode is selected by using the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LW MODE OptElec softkey Responsivity is a measure of the lightwave section s voltage output per unit of optical power input units volts watt at the reference plane of the photodiode output A typical value of responsivity is 40 v...

Page 234: ...span mode when measuring modulation with NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PERSIST On Off set to on Pulse responses less than one sample interval might not appear depending on the span setting Figure 4 9 is an example of signal loss when using the sample function with the frequency span set too wide Compare Figure 4 6 and Figure 4 9 The only di erence in instrument setting between the t...

Page 235: ...in a limit line le Files are stored in the currently selected user memory When power is applied internal memory is selected To select a user memory area press NNNNNNNNNNNNNN Misc NNNNNNNNNNNNNN MORE NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN catalog MSI then select one of the following softkeys NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN HP MSIB CARD NNNNNNNNNNNNNNNNNNNNNNNNNNNNN HPIB DISK NNNNNNNNNNNNN...

Page 236: ...NNNNNNNNNNNNNNNNNNNN Traces Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa SAVE STATE saves the current instrument state in a state register le Files are stored in the currently selected user memory When power is applied internal memory is selected To save a state register le press NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN SAVE STATE enter a number from the numeric keypad then press NNNN...

Page 237: ...memory device or modify existing les Functional Type memory related Firmkey Access NNNNNNNNNNNNNNNNNNNN Traces Preset State Not a ected by 4IP5 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa SAVE TRACE A stores trace A in a trace le If desired use single sweep mode to capture one complete sweep of trace data before storing the le Functional Type memory related Firmkey Access NNNNNNNNN...

Page 238: ... INTRNL MEMORY NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN HP MSIB CARD NNNNNNNNNNNNNNNNNNNNNNNNNNNNN HPIB DISK To save a user softkey le press NNNNNNNNNNNNNNNNNNNNNNNNNNNNN SAVE USER enter a number from the numeric keypad then press NNNNNNNNNNNNNNNNN ENTER The operation of NNNNNNNNNNNNNNNNNNNNNNNNNNNNN SAVE USER and NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN SAVE USERKEY are identical See the NNNNNNNNNNNN...

Page 239: ...o digital converter to obtain faster sweep times when the spectrum analyzer frequency span is zero During normal operation the video signal is routed to the analog to digital converter ADC in the HP 70900B local oscillator source for processing If the analyzer system contains an analog to digital converter module in addition to an HP 70900B local oscillator source the NNNNNNNNNNNNNNNNNNNNNNNNNNNNN...

Page 240: ... CHAR softkey is active when NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN INSERT or or NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN REPLACE or is present Functional Type programming related and display Firmkey Access NNNNNNNNNNNNNN Misc Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa select input accesses a softkey menu that lists the available input ports To activate an input po...

Page 241: ...yzer and lightwave signal analyzer system con guration The input port number is required during certain programming situations Checking the input port number on the softkey label is a simple way to determine the input port number Note Changes in hardware con guration or rmware revision can a ect the displayed numbering of the system inputs When programming the commands INPUT INPUTMOD and MODADD ca...

Page 242: ...aaaaaaaaaaaaaaaaa SIG ID AMPTD 1 signal identi cation amplitude delta speci es the amplitude di erence between the marked signal and signals tested as its image or harmonic Its preset value is 10 dB Use the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN SIG ID AMPTD 1 softkey for the image identi cation method only The setting of the softkey can a ect whether image method can nd the signal Functiona...

Page 243: ...NNNNNNNNNNNNNNNNN SIG ID CF is ine ective Functional Type signal identi cation Firmkey Access NNNNNNNNNNNNNN Freq Preset State O for spectrum analyzer but not available in optical mode aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa SIG ID MAN OFF selects automatic or manual mode Its preset state is automatic mode Functional Type signal identi cation Firmkey Access NNNNNNNNNN...

Page 244: ...ey and its related softkey functions are not available Functional Type signal identi cation Firmkey Access NNNNNNNNNNNNNN Freq Preset State Not a ected by 4IP5 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa SIGNAL IDENT executes a signal identi cation routine using either the image or shift method Instrument preset activates the image method Functional Type signal identi cation Firmke...

Page 245: ...it softkey controls the amplitude variation tolerated by the signal tracking functions The tracking limit can vary from 0 to 300 dB The preset tracking limit is 5 dB Functional Type marker Firmkey Access NNNNNNNNNNNNNNNNNNNN Marker Preset State 5 dB aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa SIG TRK On Off signal track on o keeps the marker and the trace point it marks a...

Page 246: ...tion When being used as a programming function this menu key inserts a space into the programming text on the data line Use the 485 and 495 step keys to move the entry window along the text in the data line Display Function When being used as a display function this menu key enters a space between characters in the TITLE entry window at the bottom of the display Functional Type programming related...

Page 247: ...aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa SRC ATN AutoMan source attenuator allows the source attenuator level of an HP 70300A RF tracking generator to be automatically or manually changed The source attenuator increases the power level range from a range of 010 to 021 dBm to a range of 010 to 091 dBm In automatic mode the source attenuator is controlled automatically as required to produce the requested ...

Page 248: ... Set NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN SRC OSC INT EXT to internal to activate the 21 4 MHz oscillator in the tracking generator module Select EXT to mix with an external oscillator connected to the 21 4 MHz INPUT port With external source oscillation the tracking generator output may be o set up to 610 MHz A modulated external 21 4 MHz source will put modulation on the RF OUTPUT of ...

Page 249: ...nstrument defaults to the closest allowed value The 485 and 495 step keys change the o set value in step sizes set by the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PWR STP AutoMan softkey The front panel knob changes the o set value continuously Functional Type tracking generator Firmkey Access NNNNNNNNNNNNNNNNN State Preset State 0 dB for tracking generator aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...

Page 250: ...ment range aaaaaaaaaaaaaaaaaaaaaaaaaa STATE lists the current state of system level parameters under operator control The summary includes frequency ranges bandwidth settings o sets and external mixing parameters It also lists the identi cation and serial numbers and rmware version date of the system controlling module the HP 70900B local oscillator source Figure 4 10 illustrates an example of the...

Page 251: ...ontrol Functional Type instrument state Firmkey Access NNNNNNNNNNNNNNNNNNNN Traces Preset State On aaaaaaaaaaaaaaaaaaaaaa STEP executes each successive program command one at a time Functional Type programming related Firmkey Access NNNNNNNNNNNNNN Misc Preset State O 4 156 Softkey Descriptions ...

Page 252: ...en the frequency span of the system is less than 20 times the bandwidth of the device If trace math softkeys NNNNNNNNNNNNNNNNNNNNNNNNNNN A0B A or NNNNNNNNNNNNNNNNNNNNNNNNNNN A0C A are executed during the stimulus response mode measurement results are displayed in relative amplitude mode Measurement results are relative to references stored in Trace B or Trace C References may be stored using the f...

Page 253: ...A stops the updating of the Trace A stores the trace data in reserved memory then activates the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN VIEW A BLANK A softkey Trace B and Trace C have a corresponding store softkey function If necessary press NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN CLEAR WRT A to reactivate the NNNNNNNNNNNNNNNNNNNNNNN STORE A key The 4I P5 or NNNNNNNNNNNNNNNNNNNN Traces softkey al...

Page 254: ...ce will no longer contain a valid reference for the measurement conditions and a new reference must be obtained The reference level reference level position and vertical log scale may be changed without a ecting the reference Consider the following operating hints when using the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN STORE OPEN C function Press NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN STORE...

Page 255: ...urement conditions A new through calibration trace must be obtained and stored using the new frequency settings The reference level reference level position and vertical log scale can be changed and the trace will remain valid Storing the through connection saves correction factors that can later be subtracted out This is sometimes referred to as calibrating the instrument setup Consider the follo...

Page 256: ...ed as late as possible in the signal path toward the detector in preference to toward the mixer Multiple step gains may be used to achieve the requested total step gain The SG information is part of the instrument state so SAVES RCLS will interact properly with this command An annunciator will appear to the right of the RL annotation if the SG is not in AUTO The SG command is fully supported by th...

Page 257: ...reset State Auto aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa SYS COR AutoOff system correction automatic or o enables system speci c amplitude correction factors The correction factors are matched by serial number to a single combination of RF microwave and lightwave modules installed in the system Only selected systems have a factory generated system calibration Whe...

Page 258: ...hreshold level without altering stored trace data This function is a visual aid only Manually specify the desired threshold level in dBm by using the numeric keypad the 485 and 495 keys or the front panel knob To display the entire trace again set the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN THRESHD On Off softkey to o The threshold value that was entered manually will remain unchanged until a...

Page 259: ... knob to select a character from the character list Use the following editing softkeys to compose text in the TITLE entry window at the bottom of the display NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN CLEAR TO END NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN DELETE CHAR NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN DELETE or NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN ENTER LINE NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN INSERT or ...

Page 260: ...e trace processing functions Functional Type active trace processing Firmkey Access NNNNNNNNNNNNNNNNN BWSwp Preset State A aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa TRACE LENGTH varies the number of points in a trace from 3 to 1024 After pressing 4INSTR PRESET5 traces A B and C each have 800 points Functional Type active trace processing Firmkey Access NNNNNNNNNNNNNNNNN BWSwp Pre...

Page 261: ...aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa trace logmath accesses log math active trace processing function softkeys Functional Type active trace processing Firmkey Access NNNNNNNNNNNNNNNNN BWSwp Preset State Not a ected by 4IP5 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa trace norm accesses the trace normalization softkey functions Functional Type tracking generator Firmkey Access NNNNNNN...

Page 262: ...d C to 800 Sweeps and displays trace A Activates clear write mode Blanks traces B and C Activates normal detection of the input signal Turns o math functions Functional Type instrument state Firmkey Access NNNNNNNNNNNNNNNNNNNN Traces Preset State Executed aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa track gen accesses the tracking generator softkey functions Functional Type tracking generator Fir...

Page 263: ...e source is o 3 Select the measurement range with the NNNNNNNNNNNNNN SPAN NNNNNNNNNNNNNNNNNNNN CENTER NNNNNNNNNNNNNNNNN START and NNNNNNNNNNNNNN STOP softkeys High insertion loss devices may require reference level adjustments Select a bandwidth less than 2 kHz with the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN RES BW AutoMan softkey The message Tracking not required appears on the display if a...

Page 264: ...yed At wider bandwidths since the adjustment range is small in comparison tracking is not required If the resolution bandwidth is less than 2 kHz the sweep time and trace length are altered automatically to maximize the tracking adjustment speed When the system has found the highest amplitude the error message Automatic Tracking Completed is displayed At this time the original trace length sweep t...

Page 265: ...unciator T Tau appears on the screen to indicate this The annunciator is just to the right of the ROFFSET annunciator location For the HP 70900B local oscillator source TRIGDEL speci es additional delay Depending upon the measurement setup the internal latency may be signi cant but steady for that measurement setup For the HP 70700A digitizer the error ADC trig delay range will be given if the spe...

Page 266: ...uency point Three types of line segments are available NNNNNNNNNNNNNN FLAT draws a zero slope line between the beginning points of two segments producing limit line values equal in amplitude for all frequencies between the two points NNNNNNNNNNNNNNNNN SLOPE draws a sloped line between the beginning points of two segments producing limit line values for all frequencies between the two points NNNNNN...

Page 267: ...aaaaaaaaaaaa units menu provides an amplitude readout selection menu The amplitude readout annotation for the reference level marker display line and threshold can be changed to dBm dBmV dB V volts or watts For a lightwave signal analyzer when a lightwave signal path and optical mode have been selected the amplitude readout selection is limited to dBm and watts Functional Type amplitude Firmkey Ac...

Page 268: ...r frequency segments that slope record the frequency and amplitude of the beginning point and end point of the segment For frequency segments that are at record the frequency and amplitude of the end point of the segment only Enter these correction values into the upper limit line table using the limit line softkey functions After the correction values have been entered in the upper limit line tab...

Page 269: ...layed optical power it has no e ect on the actual detected electrical power Therefore the display of the power meter and trace in electrical mode does not change when the user power function is activated To enter a power level o set enter the absolute power level value directly using the numeric keypad Terminate the entry with the NNNNNNNNNNN dBm softkey The input value can also be modi ed using t...

Page 270: ...NNNNNNNNNNNNNNN RECALL STATE softkey descriptions Functional Type power meter Firmkey Access NNNNNNNNNNNNNNNNN Amptd Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa VBW AMP On Off disable the amplitude correction factors to the local oscillator The corrections are disabled when the softkey is set to o These corrections improve the amplitude accuracy of displaye...

Page 271: ... video and resolution bandwidths that is maintained when their settings are coupled The video and resolution bandwidth settings are coupled when the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN VID BW AutoMan softkey is set to automatic When they are uncoupled the video bandwidth uncoupled indicator appears as shown in Figure 4 8 The ratio is determined as follows video bandwidth resolution bandwi...

Page 272: ...set while video averaging Trace A has the highest priority and trace C has the lowest When video averaging a lower priority trace blank the higher priority traces Blanking the higher priority traces removes them from the video averaging process thereby reducing the measurement time The averaging function sets the averaging counter to 1 then begins averaging the trace as it sweeps The active readou...

Page 273: ...ween the resolution bandwidth and video bandwidth lter settings When a new video bandwidth value is selected the functions are uncoupled and the video bandwidth softkey setting switches to manual When they are uncoupled the video bandwidth uncoupled indicator appears as shown in Figure 4 8 Set the softkey to automatic to reestablish coupling See the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN VBW RB...

Page 274: ...s when the detected signal level changes from 95 dBm to 090 dBm See the NNNNNNNNNNNNNNNNNNNNNNNNNNNNN HYS LEVEL and NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN VIDEO LEVEL softkey descriptions Functional Type sweep and trigger Firmkey Access NNNNNNNNNNNNNNNNN BWSwp Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa VIDEO LEVEL speci es the trigger level for the video softkey function T...

Page 275: ...is selected and when either the video trigger level command VTL or the video trigger hysteresis command VTH is active The video trigger level display line cannot be turned o when either VTL or VTH is active The display of these lines is automatically deactivated when another trigger mode is selected as long as neither VTL nor VTH is active The VTDL command can be used to override the automatic ope...

Page 276: ...on for the reference level marker display line and threshold to be changed to volts Functional Type amplitude Firmkey Access NNNNNNNNNNNNNNNNN Amptd Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa WARNING On Off Enables or disables warning messages from being displayed on the display Functional Type service related Firmkey Access NNNNNNNNNNNNNN Misc Preset Stat...

Page 277: ...NNNNNNNN Amptd Preset State O aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa WAVELEN wavelength converts the displayed frequency to its related wavelength Functional Type marker Firmkey Access NNNNNNNNNNNNNNNNNNNN Marker Preset State O aaaaaaaa X When in linear mode press NNNNN X after making a numeric entry to specify the marker position in terms of a ratio Functional Type marker 4 182 Softkey Descriptions...

Page 278: ...urement in progress is interrupted when the NNNNNNNNNNNNNN ZERO softkey is activated Pressing the NNNNNNNNNNNNNN ZERO softkey immediately executes a zeroing of the o sets in the internal average power meter The o set is primarily due to photodiode dark current When the zeroing function is activated an asterisk appears momentarily to the right of the OPT or ELEC lightwave annotation See the NNNNNNN...

Page 279: ...on signal peak of interest Press the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN ZOOM TO RES BW softkey and enter the number of the desired resolution bandwidth using the numeric keypad Press the NNNNNNNNNNN MHz NNNNNNNNNNN kHz or NNNNNNNN Hz softkey to enter the units for resolution bandwidth value The span is reduced to 0 hertz when the units softkey is pressed Functional Type marker Firmkey Ac...

Page 280: ...Catastrophic Failures tells how to troubleshoot when none of the usual diagnostics are operating Repair Procedures assists in nding the source of lower level troubleshooting and repair information For descriptions of displayed error messages refer to Chapter 6 Troubleshooting Tools There are two types of troubleshooting tools for HP 70000 Series modular spectrum analyzer systems built in tools and...

Page 281: ...ystem graphics display or HP 70004A color displays have in addition to the letter E indicator an I O or HP IB error indicator light on the front panel These are explained in Catastrophic Failures Error Indicators The ERR error light indicates that the element has an error condition If the element is a slave the error lights of both the slave and its master indicate the error condition The error li...

Page 282: ...HP MSIB address of that element The HP MSIB address of each element may be identi ed by scrolling the cursor through the address map and observing the active indicators HP 70001A Mainframe Status Indicators The HP 70001A mainframe has VOLT TEMP CURRENT and I O CHECK status indicators The VOLT TEMP light indicates that the line voltage or power supply temperature needs to be checked The CURRENT lig...

Page 283: ...er and HP MSIB address of the element that generated the error Refer to the error messages in Figure 5 2 When a slave element reports an error the error indicator of its master remains on until the slave error condition is reported by the master even if the slave error condition clears When the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN REPORT ERRORS softkey is pressed the master reports the error ...

Page 284: ...P 70000 Series modular spectrum analyzer system which have an HP 70900B local oscillator source con gured as a master element The display instruments are not tested by the analyzer test function If the analyzer passes this test then the HP 70900B local oscillator source analog circuits and the processor memory and HP MSIB circuits of the analyzer are functioning correctly Note Before running an An...

Page 285: ... oscillator display window is assigned Analyzer Test error messages may also be viewed with the Report Errors screen whether or not there is a local oscillator display window or keyboard assignment as long as the local oscillator is addressed at row 0 Refer to Troubleshooting Over the HP IB for information about running Analyzer Test from an external HP IB computer Background Tests The analyzer co...

Page 286: ...onitoring built in service detectors System Diagnostics does not test displays These may be tested by using the con dence test function of the display To access the display tests press 4DISPLAY5 NNNNNNNNNNNNNN misc and NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN display tests The System Diagnostic program is loaded into the HP 70900B local oscillator source RAM at the factory for most precon gured s...

Page 287: ...tic test the Operation Veri cation tests can be performed with the calibrator output connected to the RF INPUT of the lightwave section The HP 70000 Modular Spectrum Analyzer Installation and Veri cation Manual explains how to run this software program A list of the Operation Veri cation tests is provided as well as information about which modules may need adjustment or repair if a test fails 5 8 ...

Page 288: ...blem Troubleshoot major lightwave signal analyzer system failures just as you would for a spectrum analyzer Refer to the relevant section of this chapter for system related problems for example a display HP MSIB or catastrophic failure Note The HP 70810B lightwave section must be returned to the factory for all testing servicing and repair If a lightwave section is found to be faulty contact your ...

Page 289: ...ocal oscillator source CALIBRATOR output directly to the RF INPUT of the electrical spectrum analyzer 3 To execute the calibration routine press the following softkeys Press NNNNNNNNNNNNNNNNN State Press NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN select input Press NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN IN 3 70908A Input port number and RF section model number may vary depending on system con guration Pr...

Page 290: ...ed use Troubleshooting from the Front Panel or Troubleshooting Over the HP IB to perform additional troubleshooting c If the user menu softkeys are not displayed follow the steps below to assign the display window i Press 4DSP5 on the HP 70205A graphics display 4DISPLAY5 on the HP 70206A system graphics display or HP 70004A color display ii Press NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN SELECT INSTR...

Page 291: ...nect the cable between the RF OUTPUT of the lightwave section and the RF INPUT of the RF section Connect the CALIBRATOR signal directly to the RF INPUT of the RF section that is installed in the system 6 Press 4USR5 on the HP 70205A graphics display 4USER5 on the HP 70206A system graphics display or HP 70004A color display to access the user softkeys 7 Press the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN...

Page 292: ...an intermittent failure in one suspect function to be tested NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN Multiple Tests is helpful for testing multiple speci cations allowing more than one suspect function to be tested NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN Repeat Mult is used to test multiple speci cations repeatedly allowing an intermittent failure in more than one suspect function to be tested...

Page 293: ...mpatible Running Diagnostics System Diagnostics may be run from the front panel of a modular analyzer by pressing NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN SYSTEM DIAG or it may be run remotely from a computer by using the REM DIAG utility Note If an HP 9000 Series 200 300 controller is not to be used make a backup copy of System Diagnostics for the computer model to be used before running the program A...

Page 294: ...tely Use the following procedure to run the REM DIAG utility from an HP 9000 Series 200 300 controller 1 Load HP BASIC 2 0 with extensions 2 1 or equivalent 2 Use an HP IB cable to connect the HP IB ports of the computer to the modular spectrum analyzer This cable must connect directly to the HP 70004A color display or HP 70001A mainframe that contains the master HP 70900B local oscillator source ...

Page 295: ...essed by pressing the 4DISPLAY5 softkey Calibrator Signal To run System Diagnostics for an HP 71100C modular spectrum analyzer HP 71200C modular spectrum analyzer HP 71210C microwave spectrum analyzer the CALIBRATOR output of the HP 70900B local oscillator source must be connected to the RF INPUT of the RF Section This connection is not necessary for any system with an HP 70907A B external mixer i...

Page 296: ... It is intended to be used to store previously loaded DLPs prior to allocating the USER memory for another purpose Its companion program WRITE LO is used to restore the data read by this program This program will read data blocks up to 32 Kbytes in length until all USER memory has been read This method of programming is used to avoid a BASIC run time error which occurs when a string is made greate...

Page 297: ...DIM Filename 160 DIMENSION STRING FOR FILE 250 260 Separator 0 270 Hpib_addr 718 THE HP 70900 HP IB ADDRESS 280 Filename U_STATE THE NAME AND LOCATION OF THE 290 STORAGE FILE 300 310 ASSIGN Lo TO Hpib_addr OPEN I O PATH TO 70900 320 330 ON ERROR GOSUB Kill_file WE NEED TO RE CREATE IT EACH 340 CREATE BDAT Filename 256 TIME WE USE IT 350 OFF ERROR 360 ASSIGN Disc TO Filename OPEN I O PATH TO STORAG...

Page 298: ...ib_addr DEFINE I O PATH NAME 110 ASSIGN Disc TO Filename DEFINE STORAGE PATH NAME 120 130 ON END Disc GOTO Done TRAP END OF DATA READ 140 LOOP UNTIL END OF DATA 150 ENTER Disc Data_length READ DATA LENGTH OF STRING 160 ALLOCATE U_state Data_length DIMENSION STATE STRING 170 ENTER Disc U_state READ STRING FROM FILE 180 OUTPUT Lo USING K U_state WRITE STRING TO 70900 190 DEALLOCATE U_state KILL IT F...

Page 299: ...r screen Finally it restores the instrument state and RAM contents Running the System Diagnostics Utilities Use the following procedure to run any of the utilities on an HP 9000 Series 200 300 controller 1 Load BASIC 2 0 with extensions 2 1 or equivalent 2 Use an HP IB cable to connect the HP IB of the computer to the spectrum analyzer This cable must connect directly to the HP 70004A color displa...

Page 300: ...h memory to allow System Diagnostics to run Other Error Messages Some System Diagnostics error messages for example NO RF SECTION are generated if the requirements listed in the System Diagnostics Requirements section are not met Refer to Chapter 5 Error Messages for additional information on error messages No System Diagnostics in RAM System Diagnostics may be reloaded into RAM of the spectrum an...

Page 301: ...f the screen display See Figure 5 1 Elements except displays have an ERR Error indicator LED located on the front panel If the letter E or the ERR LED on an element ashes at a 1 Hz rate either the element cannot communicate over the HP MSIB and is probably faulty or the HP MSIB cables are faulty or not connected correctly If more than one module error indicator ashes at a 1 Hz rate either the main...

Page 302: ...tors 4 If the I O mainframe light comes on the cable is faulty If the I O light does not come on test the other cable 5 If the light does not come on for either cable then the element connected with these cables is faulty Refer to the service manual for that element for troubleshooting information An alternate troubleshooting approach is to reconnect the HP MSIB cables and use the HP MSIB Troubles...

Page 303: ...lone display instruments on the HP MSIB is on 2 Check that all HP MSIB cables are properly and securely connected 3 Disconnect the HP MSIB cables from the mainframe Is the I O CHECK LED still lit If yes The HP 70001A mainframe is probably faulty Refer to the HP 70001A Service Guide for further troubleshooting information If no The problem is either the cables or the instrument that was connected t...

Page 304: ...e with the local oscillator Check for the ashing letter E which indicates an HP MSIB problem a Assign a display window to the local oscillator by pressing 4DSP5 on the HP 70205A graphics display or 4DISPLAY5 on the HP 70206A system graphics display or HP 70004A color display then NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NEXT INSTR This assigns the display to the master with the lowest column address Press...

Page 305: ...nformation e If the problem remains repeat Steps a through d on each module until the faulty element has been isolated If none of the elements is faulty the HP 70001A mainframe or HP 70004A color display is faulty Refer to the HP 70001A Service Guide or HP 70004A Service Guide for further troubleshooting and repair information Module Removal Method This method involves removing one module at a tim...

Page 306: ...uctions for returning a faulty module to Hewlett Packard refer to the HP 70000 Modular Spectrum Analyzer Installation and Veri cation Manual Assembly Component Level Support For assembly level troubleshooting information and ordering information for both new and exchange assemblies refer to the appropriate technical reference service manual or component level information package CLIP CAUTION Repai...

Page 307: ... Veri cation Manual for instructions on returning an instrument for service On Site Service Option On site service for modular measurement systems is available in many areas Contact a Hewlett Packard sales representative for on site service availability and terms information Additional Service Options Additional service options that supplement the standard Return to Hewlett Packard service support...

Page 308: ...s A de nition of the functional category is given at the beginning of each error message listing Types Numbers User Application 0001 0999 Operating 2000 2999 Hardware Warning 6000 6999 Hardware Broken 7000 7999 Computation 8000 8999 Factory Use Only 9000 9999 The spectrum analyzer displays error messages which can also be retrieved via HP IB by executing the ERR programming command Operating hardw...

Page 309: ...em diagnostics error numbers 0001 NO LO Cause The program cannot nd an HP 70900B local oscillator source at row address 0 Cure Check and correct the HP MSIB switches on the HP 70900B local oscillator source 0002 HP MSIB addr 70902 Cause The HP MSIB address of the HP 70902A IF section does not follow addressing rules Cure The recommended address of the HP 70902A IF section is in row 2 and the same ...

Page 310: ...F section module Cure Install an RF section in the system or correct the HP MSIB switch settings on the currently installed RF section 0009 NO I F SECTION Cause The program cannot nd an IF Section Cure Install an IF Section in the system or correct the HP MSIB switch settings on the currently installed IF Section 0010 HP MSIB addr 70907 Cause The HP MSIB address of the HP 70907A B external mixer i...

Page 311: ...ystem to match the selection This error will not occur in Revision C 00 00 and later 0015 HP MSIB addr 70700 Cause The HP MSIB address of the HP 70700A digitizer does not follow the addressing rules The program can test the HP 70700A digitizer only when it is con gured as a slave to the HP 70900B local oscillator source Cure The recommended address of the HP 70700A digitizer is in row 3 and the sa...

Page 312: ...t or repair 0024 Problem ampl low Cause The signal amplitude of the HP 70902A IF section is too low in both the LC and Xtal bandwidths The program stops testing the HP 70902A IF section when this error is generated Cure Check the connection at the 21 4 MHz IN on the rear panel of the HP 70902A IF section Be sure the cable is routed correctly and is not defective If this does not remedy the problem...

Page 313: ...the log ampli er or replace the thick lm log ampli er microcircuits 0030 21 4MHz input cable Cause The program cannot nd the rear panel 21 4 MHz input signal for the HP 70903A IF section Cure Check the 21 4 MHz OUT connection on the rear panel of the RF section going to the 21 4 MHz IN connection on the rear panel of the HP 70903A IF section If this cable is connected properly it might be defectiv...

Page 314: ...ure The step gain ampli ers in the HP 70902A IF section require adjustment or repair 0036 Res BW accuracy Cause One or more of the HP 70903A IF section resolution bandwidths are not the correct value Cure The bandwidth lter adjustments in the HP 70903A IF section should be performed If this does not remedy the problem repair the HP 70903A IF section LC bandwidth lters 0037 Res BW amplitude Cause T...

Page 315: ...put of the HP 70900B local oscillator source is not connected to the RF INPUT of the RF section a prerequisite for running the program or the rear panel 21 4 MHz output of the RF section is not connected to the IF Section Cure The marker reading was less than 060 dBm and the RF section 21 4 MHz diagnostic detector indicated a low signal condition This could be caused by no calibrator signal applie...

Page 316: ...i er in the HP 70908A RF section fails its test Cure This ampli er is located in the last converter assembly of the HP 70908A RF section The last converter assembly should be tested and repaired as required 0050 Res BW CF Cause The resolution bandwidth center frequency of one or more of the 70902A IF Sections is out of adjustment Cure Perform the HP 70902A IF section Resolution Bandwidth Filter ad...

Page 317: ...ut incorrect Cause The front panel CALIBRATOR output of the HP 70900B local oscillator source is not connected to the RF INPUT of the system being tested This is a prerequisite for running the program Cure This error indicates that the marker reading of the signal was less than 060 dBm and the 21 4 MHz diagnostic detector indicated a low signal condition Check that the calibrator signal from the H...

Page 318: ...he HP 70600A preselector or the HP 70601A preselector is not functioning properly Cure Check A6S4 and replace if required 0068 RF Switch 1 Cause The HP 70620 or HP 70621 has failed its switch diagnostic 1 If the preampli er is an HP 70620A preampli er S4 or its associated drive circuitry has failed If the preampli er is an HP 70620B preampli er or an HP 70621A preampli er K1 or its associated driv...

Page 319: ...ion 001 RF preampli er has failed its diagnostic test This error will occur if the signal level gain through the RF preampli er path at 300 MHz is less than or equal to 0 dB Cure The most likely failure is the RF preampli er microcircuit Troubleshoot and repair this component and its power supply 6 12 Error Messages ...

Page 320: ...mming error Refer to the DEBUG command description in the HP 70000 Modular Spectrum Analyzer Programming Manual 2002 Illegal parameter Cause This is a user generated system protocol error 2003 Missing parameter Cause The command being executed requires more parameters than were provided or a user variable VARDEF used as a parameter for a function was not found Cure Use the DEBUG command to locate ...

Page 321: ...t out of memory because of FUNCDEF s and so forth Cure Some items must be removed from memory Analyze DLP s to see if there are extra characters spaces and so forth that could be removed Expanded memory options for the Local Oscillator are also available 2011 A Hardware Selected Cause This is noti cation that a service mode has been enabled The system is overriding the automatic con guration and o...

Page 322: ...entries in the Limit Line Table Cure Use the LIMILINE command to allocate more space for limit line entries 2016 Label too long Cause A user generated key label that has more than 14 characters or a FUNCDEF VARDEF or ACTDEF with more than 12 characters will generate this error Cure The system will truncate the text to the correct number of characters and execute the requested function Use the DEBU...

Page 323: ...ocate the programming error Refer to the HP 70000 Modular Spectrum Analyzer Programming Manual 2022 REPEAT UNTIL error Cure Use the DEBUG command to locate the programming error Refer to the HP 70000 Modular Spectrum Analyzer Programming Manual 2023 Illegal Cal signal Cause Calibration signal did not match 2024 Illegal HP MSIB comm Illegal HP MSIB communication Cause An HP MSIB protocol violation ...

Page 324: ...ntax Cure Please document all the steps that led up to this error and contact your HP representative 2030 Scaling overflow Cause The user has requested a scale factor that is too large in the DWINDOW command Cure Refer to the DWINDOW command description in the HP 70000 Modular Spectrum Analyzer Programming Manual for limits 2031 Too many errors Cause The error bu er has been lled 2032 Hardware not...

Page 325: ... access the disk when another device had control of the HP IB Cure Remove the other device from the HP IB 2037 No instr resp Cause No HP IB instrument response from an OUTPUT command or mass storage such as SAVE or RECALL to an HP IB disk Cure Verify that the HP IB address is correct 2038 Span4trace too large Cause There are too few data points for the span requested Cure Reduce the span or increa...

Page 326: ...LINEAR not allowed Cure Use the DEBUG command to locate the programming error Refer to the HP 70000 Modular Spectrum Analyzer Programming Manual 2044 Not stored open 1st Cause The data for the short is entered before the data for the open when normalizing for swept response Cure Store the data for the open rst Refer to the STORREF command 2045 HP IB bus error Cause HP IB protocol violation Cure Ve...

Page 327: ...ramming error Refer to the DEBUG command description in the HP 70000 Modular Spectrum Analyzer Programming Manual 2049 Battery failed Cause The battery backed up RAM was not valid Cure Return to Hewlett Packard for servicing 2050 Ampcr span too large Amplitude correction data too large 2051 File not found Cause A user state was not found in memory Cure Check the state number or name 2052 File alre...

Page 328: ...ss storage device 2060 New 70810 ROMs req Cause This LO rmware revision requires the latest HP 70810B lightwave section rmware to make lightwave measurements 2802 Illegal in LW mode Cause The last command sent to the HP 70810B lightwave section is legal in bypass mode only Cure Change the HP 70810B lightwave section to the bypass mode before using this command 2803 Illegal in bypass Cause The last...

Page 329: ...n 6001 Confidence test passed 6002 A6 RAM checksum battery 6003 FFS won t tune low 6004 FFS won t tune high 6005 Idler tuning range 6006 YTO tuning range 6007 MSIB NMAA received HP MSIB no module at address received Cause The module attempted to establish communication with a module at an incorrect address The system responded with an NMAA no module at address Cure If using MSIB communication veri...

Page 330: ...brated Cure Return to Hewlett Packard for servicing 6014 PLL error Phase lock loop is unlocked and or the loop tuning voltage is near its limit The internal or external frequency reference source is not close enough to 1 2 5 or 10 MHz for the HP 70310A precision frequency reference to operate or a hardware failure exists 6015 Oven cold The HP 70310A precision frequency reference s Oven Oscillator ...

Page 331: ...esent and no external frequency reference is applied 6017 6214 GHz error 6018 PGA gain sum high 6019 PGA gain sum low 6802 Invalid cal data Cause The EAROM data installed during the manufacturing process may not be valid Cure Return to Hewlett Packard for servicing 6805 Firmware Changed Cause The HP 70810B lightwave section rmwave version is of a di erent date code than was installed in the module...

Page 332: ...by a hardware failure Return to Hewlett Packard for servicing 7001 LO unleveled 7002 First LO unleveled 7003 Second LO unlocked 7004 300 MHz error 7005 321 4 MHz error 7006 21 4 MHz error 7007 Cal error Calibration error 7008 FFS handshake Fractional frequency source handshake error Cause Communication has been lost to the Frequency Synthesizer portion of the 70900 module This is very likely due t...

Page 333: ...is error will only occur on power up of the system or when the TEST command is invoked either from the front panel or remotely Cure Return to Hewlett Packard for servicing 7012 Cannot lock YTO Cannot lock YIG tuned oscillator Cause The Local Oscillator cannot acquire phase lock If an external frequency reference is being used verify that the frequency is accurate If not it is likely that the LO ha...

Page 334: ...uring a sweep of the local oscillator phase lock was lost If an external frequency reference is being used its accuracy should be veri ed Cure Verify external reference accuracy If no external reference is being used module service or calibration is necessary Return to Hewlett Packard for servicing 7017 External ref 100 MZ External 100 MHz reference error Cause The detector used to automatically s...

Page 335: ...vel 600 MHz doubler level error Cause The 600 MHz internal reference signal amplitude is not correct This error will only occur on power up of the system or when the TEST command is invoked either from the front panel or remotely Cure Return to Hewlett Packard for servicing 7022 Low idler range Cause The internal Idler oscillator did not acquire phase lock at the low end of its operating range Thi...

Page 336: ...or Cause The DAC that scales the tune voltage to sweep the YIG oscillator is not operating properly This error will only occur on power up of the system or when the TEST command is invoked either from the front panel or remotely Cure Return to Hewlett Packard for servicing 7027 Sweep dac Digital to analog converter sweep error Cause The DAC that generates the system sweep ramp is not operating pro...

Page 337: ... 7031 Idler is unlocked Cause The local oscillator is not able to acquire phase lock Cure Verify an external reference if applicable otherwise the module will need to be returned to Hewlett Packard for servicing 7032 Oven RF error The HP 70310A precision frequency reference accessory oven is not providing a signal is providing a low signal or is providing a signal when it should not be 7033 Power ...

Page 338: ...rence is being used its accuracy should be veri ed If the reference is good there is a hardware failure The module must be returned to Hewlett Packard for servicing 7042 FFS won t tune high Fractional frequency source cannot tune high Cause The frequency synthesizer will not acquire lock at the highest end of its operating range This error will only occur on power up or when the TEST command is in...

Page 339: ...illegal position Cure Please document all steps taken that led to this error condition and contact your HP representative 7047 RAM failure Cause The RAM self test detected a failure in the system RAM Cure Return to Hewlett Packard for servicing 7048 FFS won t unlock Cause The module self test tunes the synthesizer to a frequency outside it s operating range to verify the lock detector is operating...

Page 340: ...ctive or the data in the EEPROM must be reloaded Cure Return to Hewlett Packard for servicing 7801 Optical atten failed Cause The optical attenuator cannot achieve a given setting Automatic periodic zeroing temporarily modi es the attenuator setting so this error can occur without a user attempt to change attenuation Cure Return to Hewlett Packard for servicing 7802 ADC error Cause The analog digi...

Page 341: ...7804 Self test failed Cause The self test checks the functionality of the power meter and optical attenuator Cure Return to Hewlett Packard for servicing 7805 Zeroing error Cause Photodiode dark current cannot be nulled Cure Check for a hardware problem such as excessive noise on the photodiode or catastrophic failure in the power meter circuitry 6 34 Error Messages ...

Page 342: ...trum Analyzer Programming Manual 8000 Divide by zero 8001 Float pt overflow Floating point over ow Absolute value of number exceeds 1 797 693 134 862 315 2 10308 8002 Log of zero 8003 Log of negative 8004 Integer overflow Number is less than 032 768 or greater than 32 767 8005 Square root error 8006 Modulus of zero 8999 Float pt underflow Floating point under ow Number is between 0 and 62 225 073 ...

Page 343: ...rs occurs 1 Record the error number and the hexadecimal code 2 Record all events that led up to the occurrence of the error message 3 Record the HP model numbers of the modules in the system 4 Record the rmware version 5 Contact the nearest HP Sales and Service O ce for assistance 6 36 Error Messages ...

Page 344: ... displayed Measurement results can also be monitored with a computer Figure A 1 illustrates the basic spectrum analyzer functions Figure A 1 Simpli ed Spectrum Analyzer Block Diagram For an input signal FS the LO frequency is tuned so that FLO 0 FS FIF where FLO is the local oscillator frequency FS is the tuning frequency displayed response FIF is the mixing product When this equation is satis ed ...

Page 345: ...tem A lightwave signal analyzer displays the total average power and modulation or base band spectrum of an optical input signal Figure A 2 illustrates a basic lightwave signal analyzer Modulated light enters the HP 70810B lightwave section through a singlemode ber front panel connector The light is expanded collimated and passed through an optical attenuator that is controllable over a 30 dB rang...

Page 346: ...Figure A 2 Simpli ed Lightwave Signal Analyzer Block Diagram Theory of Operation A 3 ...

Page 347: ...e Figure A 3 footnotes 1 Includes HP 70904A RF section HP 70905A B RF section HP 70906A B RF section HP 70908A RF section 2 Includes HP 70902A IF section HP 70903A IF section 3 Includes HP 70600A preselector HP 70601A preselector not compatible an HP 70908A RF section and HP 70620B preampli er HP 70621A preampli er HP 70810A B lightwave section HP 70907B external mixer interface module 4 Includes ...

Page 348: ...dule The block diagrams starting with Figure A 5 are organized so that the signal path through a modular system can be followed sequentially Identify the block diagrams that match the modules in your system and follow the signal path from one block diagram to the next Figure A 3 provides an overview of how individual modules are connected in a modular analyzer system Appendix B describes the input...

Page 349: ...A 5 HP 70600A 70601A Preselector Block Diagram Figure A 6 HP 70620A B Preampli er HP 70621A Preampli er Block Diagram Figure A 7 HP 70907A External Mixer Interface Module Block Diagram A 6 Theory of Operation ...

Page 350: ...Figure A 8 HP 70904A RF Section Block Diagram Figure A 9 HP 70905A 905B 906A 906B RF Section Block Diagram Figure A 10 HP 70908A RF Section Block Diagram Theory of Operation A 7 ...

Page 351: ...Figure A 11 HP 70810B Lightwave Section Block Diagram Figure A 12 Dual HP 70810B Lightwave Section Block Diagram A 8 Theory of Operation ...

Page 352: ...gure A 13 HP 70903A IF Section Block Diagram Figure A 14 HP 70902A IF Section Block Diagram Figure A 15 HP 70902A IF Section and HP 70903A IF Section Interconnection Block Diagram Theory of Operation A 9 ...

Page 353: ...Figure A 16 HP 70900B Local Oscillator Source Block Diagram Figure A 17 HP 70310A Precision Frequency Reference Block Diagram A 10 Theory of Operation ...

Page 354: ...Figure A 18 HP 70301A Microwave Tracking Generator Block Diagram Figure A 19 HP 70300A RF Tracking Generator Block Diagram Theory of Operation A 11 ...

Page 355: ...Figure A 20 HP 70000 RF and Microwave Source with an HP 70900B Local Oscillator Source Con guration Block Diagram A 12 Theory of Operation ...

Page 356: ... a tracking generator option The source output can be modulated with an internal or external signal The HP 70301A microwave tracking generator measures the frequency response of devices from 2 7 GHz to 18 GHz The HP 70301A microwave tracking generator provides a 55 dB attenuator and vernier control that attenuate the RF OUTPUT from 0 to 60 dB When used together the HP 70300A RF tracking generator ...

Page 357: ...Front Panel Ports Figure B 1 HP 70300A RF Tracking Generator and HP 70301A Microwave Tracking Generators Front View B 2 Input and Output Ports ...

Page 358: ...tomatic level control circuit RF OUTPUT is the tracking generator output which tracks the frequency of swept responses displayed on the spectrum analyzer screen The NNNNNNNNNNNNNNNNNNNNNNNNNNNNN track gen keys control the RF OUTPUT signal LOW BAND INPUT on the HP 70301A microwave tracking generator only receives the RF OUTPUT from the HP 70300A RF tracking generator Input and Output Ports B 3 ...

Page 359: ...Rear Panel Ports Figure B 2 HP 70300A RF Tracking Generator and HP 70301A Microwave Tracking Generators Rear View B 4 Input and Output Ports ...

Page 360: ...r If desired the 0 2 9 GHz output may be sensed with a negative diode Return the sensed level to the EXT ALC INPUT SWEEP TUNE receives the tuning voltage from the HP 70900B local oscillator source The tuning voltage is applied to the automatic level control circuitry in the tracking generator SWEEP IN receives the 0 10 V ramp which is applied to the automatic level control circuitry in the trackin...

Page 361: ...solated distribution ampli ers with three outputs each leveled to 0 dBm Each ampli er input accepts a 04 to 4 dBm signal from 5 MHz to 300 MHz Use the distribution ampli ers to distribute the phase locking 300 MHz frequency reference normally produced by the local oscillator module to multiple RF sections tracking generators or external mixer interface modules An accessory power pack is available ...

Page 362: ... turned o AMP IN and OUT AMP IN receives from 5 to 300 MHz The output is leveled to 0 dBm for input levels between 04 and 4 dBm Signal inputs that are less than 04 dBm are ampli ed AMP IN A and AMP IN B are inputs for two di erent channels Each input may be distributed to three di erent outputs OUT 1 OUT 2 or OUT 3 One signal may be distributed to ve di erent outputs if the output of one channel i...

Page 363: ... multi band spectrum analyzers The preselection can be bypassed using the front panel controls to improve sensitivity by 8 to 15 dB depending on the active frequency band Up to 70 dB of attenuation is available Front Panel Ports Figure B 4 HP 70600A Preselector Front View RF INPUT receives the spectrum you wish to measure RF OUTPUT passes the preselected or non preselected spectrum to the RF secti...

Page 364: ...Rear Panel Ports Figure B 5 HP 70600A Preselector Rear View TUNE SPAN INPUT receives the lter frequency tuning voltage generated by the HP 70900B local oscillator source Input and Output Ports B 9 ...

Page 365: ...e module is switched from bypass to preampli er mode the spectrum analyzer s attenuation may be automatically increased and the reference level adjusted This ensures a safe level at the mixer input The preampli er s default mode is preampli er on It may be di erent depending on the rmware of the system master used in the system the preampli er is installed in If an HP 70900B local oscillator sourc...

Page 366: ...Figure B 6 HP 70620A B Preampli er and HP 70621A Preampli er Front View Input and Output Ports B 11 ...

Page 367: ...nd 1550 nm wavelengths 850 nm for an Option 850 The user can select one of these values or calibrate the lightwave section to some other reference Basically the HP 70810B lightwave section consists of optical attenuator broadband photodetector microwave preampli er and optical power meter The lter wheel attenuator provides up to 30 dB of optical attenuation programmed in 1 dB steps A lens focuses ...

Page 368: ...dering information Front Panel and Rear Panel Ports Figure B 7 HP 70810B Lightwave Section Front and Rear View RF INPUT SMA connector presents a 50 nominal input impedance RF OUTPUT SMA connector provides a 50 nominal output impedance HSWP IN OUT provides a TTL signal that is high while the local oscillator is swept through a selected frequency span The signal serves to synchronize the lightwave s...

Page 369: ...ptions include various optical input connector interfaces Also available are patch cords that accommodate additional optical connector systems The connectors and patch cords screw on nger tight to the lightwave section front panel optical input tting An optical cable from the light source attaches to the connector interface or patch cord Both the front panel tting and the source cable have a protr...

Page 370: ...r module or 4 preselector module if any are in the system The phase locking signal is a 300 MHz signal that phase locks to circuitry in the RF section module tracking generator module or external mixer if these are in the system See Theory of Operation and block diagram in Appendix A 3 The module converts measurement results into digital values and stores them 4 The module provides logic and memor...

Page 371: ...interface oscillator HSWP IN OUT is a 0 to 5 V square wave that is high during the sweep and low between sweeps and between bands in multi band sweeps To disable the sweep the port may be held low EXT TRIG external trigger receives an external signal that can determine when the spectrum analyzer sweep begins 300 MHz OUT supplies a phase locking signal Route the 300 MHz signal to other RF sections ...

Page 372: ...kHz The HP 70902A IF section module contains circuitry for bandwidth ltering video detection post detection video ltering and ampli cation Front Panel Ports Figure B 10 HP 70902A IF Section Front View VIDEO 0 1V output is the video signal with an approximate bandwidth of 3 MHz and amplitude range from 0 to 1 volts IF 3 MHz is the 3 MHz IF signal The amplitude changes with the reference level setti...

Page 373: ...mplitude range from 0 to 2 volts LIMITED IF OUT is for factory testing 21 4 MHz IN receives the 21 4 MHz IF signal from the RF section the external mixer interface module or the HP 70903A IF section if one is in the system 21 4 MHz AUX auxiliary OUT is the 21 4 MHz IF with a bandwidth of approximately 9 MHz B 18 Input and Output Ports ...

Page 374: ...module contains circuitry for bandwidth ltering video detection post detection video ltering and ampli cation Front Panel Ports Figure B 12 HP 70903A IF Section Front View VIDEO 0 1V output is the video signal and has an approximate bandwidth of 3 MHz and amplitude range from 0 to 1 volts 21 4 MHz IF is the 21 4 MHz IF signal The amplitude changes with the reference level setting Input and Output ...

Page 375: ...e RF signal VIDEO IN receives the VIDEO OUT signal from the HP 70902A IF section if one is in the system LOGGED IF OUT is for factory testing 21 4 MHz IN receives the 21 4 MHz IF signal from the RF section or the external mixer interface module 21 4 MHz OUT is connected to 21 4 MHz IN on the HP 70902A IF section LINEAR AGC VIDEO is a video signal with a peak value that is leveled at 1 volt nominal...

Page 376: ...of input attenuation in 10 dB increments Either ac or dc coupling may be selected using the front panel controls Front Panel Ports Figure B 14 HP 70904A RF section Front View RF INPUT receives the spectrum you wish to measure PROBE POWER provides dc levels of 15 V 012 V and ground at a maximum of 150 mA Input and Output Ports B 21 ...

Page 377: ...alyzer measurement range or the settings of the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LO OSC START and NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LO OSC STOP keys The HP 70900B local oscillator source generates the 3 0 to 6 6 GHz signal 300 MHz IN receives the 300 MHz signal from the local oscillator for phase locking 21 4 MHz OUT is the 21 4 MHz IF signal for routing to the IF modules for l...

Page 378: ...section has up to 70 dB of attenuation in 10 dB increments Front Panel Ports Figure B 16 HP 70905A RF section and HP 70905B RF sections Front View RF INPUT is an unpreselected input for the spectrum analyzer For preselected measurements the output of the preselector module for example HP 70600A preselector may be connected to the RF INPUT Input and Output Ports B 23 ...

Page 379: ...output provides 3 0 to 6 6 GHz depending on the spectrum analyzer measurement range or the settings of the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LO OSC START and NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LO OSC STOP keys The 3 0 to 6 6 GHz signal is generated by the HP 70900B local oscillator source 300 MHz IN receives the 300 MHz signal from the HP 70900B local oscillator source for phase locking 21 4...

Page 380: ...B of input attenuation in 10 dB increments Front Panel Ports Figure B 18 HP 70906A RF section Front View RF INPUT is an unpreselected input for the analyzer For preselected measurements up to 22 GHz the output of the preselector module for example HP 70600A preselector may be connected to the RF INPUT Input and Output Ports B 25 ...

Page 381: ...st local oscillator output provides 3 0 to 6 6 GHz depending on the spectrum analyzer measurement range or the settings of the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LO OSC START and NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LO OSC STOP keys The HP 70900B local oscillator source generates the 3 0 to 6 6 GHz signal 300 MHz IN receives the 300 MHz signal from the local oscillator module for ph...

Page 382: ...n on the system master sets the HP 70907B external mixer interface module default to NNNNNNNNNNNNNNNNNNNNNNNNNNNNN PRESEL ON resulting in a sweep time that is slow enough for the internal preselector magnetics in an HP 11974 Series harmonic mixers If the HP 70907B external mixer interface module is used with an external mixer from the HP 11970 Series harmonic mixers NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN...

Page 383: ...rnal mixer interface module only supplies a dc voltage derived from summing the LO tune span signal with the preselector peak DAC This is used to drive the preselector in an HP 11974 Series harmonic mixers B 28 Input and Output Ports ...

Page 384: ...erface module 21 4 MHz OUT provides the 21 4 MHz IF signal for routing to the IF sections for ltering and detection 321 4 MHz OUT provides an auxiliary IF output that tracks the 21 4 MHz OUT 300 MHz IN receives the phase lock signal generated by the HP 70900B local oscillator source 300 MHz OUT provides a feed through path for the local oscillator generated 300 MHz signal allowing the con guration...

Page 385: ...e NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LO OSC START and NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LO OSC STOP keys TUNE SPAN input is a voltage ramp with varying slope and dc level that is generated by the HP 70900B local oscillator source The ramp assists in the control of the preselector in the HP 70908A RF section The ramp also controls the tuning frequency of the tracking generator external mixer ...

Page 386: ...ing from 2 to 4 EXT MIXER LO output provides a leveled 3 0 GHz to 6 6 GHz signal that an attached external mixer uses to heterodyne with the millimeter wave signal of interest to generate the 321 4 MHz IF signal The frequency depends on the selected spectrum analyzer center frequency span settings and the harmonic mixing number EXT MIXER TUNE SPAN output provides a swept variable slope dc voltage ...

Page 387: ...ted by the HP 70900B local oscillator source The ramp assists in the control of the preselector in the HP 70909A RF section The ramp also controls the tuning frequency of the tracking generator external mixer interface or preselector modules if they are in the system 321 4 MHz OUT has a bandwidth of about 30 MHz and provides a wide bandwidth IF output that is approximately 5 dB higher in amplitude...

Page 388: ...ng from 2 to 4 EXT MIXER LO output provides a leveled 3 0 GHz to 6 6 GHz signal that an attached external mixer uses to heterodyne with the millimeter wave signal of interest to generate the 321 4 MHz IF signal The frequency depends on the selected spectrum analyzer center frequency span settings and the harmonic mixing number EXT MIXER TUNE SPAN output provides a swept variable slope dc voltage t...

Page 389: ...ctor in the HP 70909A RF section The ramp also controls the tuning frequency of the tracking generator external mixer interface or preselector modules if they are in the system 321 4 MHz OUT provides a wide bandwidth IF output that is approximately 5 dB higher in amplitude than the RF INPUT signal The intended use for this output is for receiver products that utilize wide bandwith signal processin...

Page 390: ...nector must be aligned precisely and the connector interface must be free of contamination to make a good connection Characterizing a Connection The quality of a connection can be characterized by connector loss and return loss Connector or insertion loss is one important performance characteristic of a ber optic connector Typical values are less than 1 dB of loss and sometimes as little as 0 1 dB...

Page 391: ...uched the ber optic tip or other contamination is suspected clean the tip with a new paper and cleaning solution Lint free foam swabs are recommended for cleaning the connectors because they leave no particles Cotton swabs can be used as long as no cotton bers remain on the end face after cleaning Use a clean swab each time you clean a connector and use a clean applicator when applying index match...

Page 392: ...pounds are available to make wet connections oil gel and grease Oil is often used on connecting interfaces where little or no air gap is expected However oil has a tendency to ow or drip onto unwanted areas and cannot adhere as well to the ber ends as gel Gel is more viscous than oil but can be more di cult to remove Also some gels contain damaging particulates read the technical speci cations If ...

Page 393: ... ber end with a lint free swab dipped in cleaning solution Wipe the swab across it 5 Let the connector dry Clean compressed air can be used to speed the drying process 6 If necessary repeat the process to ensure that all contamination is removed 7 As soon as the connector is dry connect it or cover it for later use Making the Connection Since overtightening or undertightening connectors can result...

Page 394: ...e in handling all ber optic connectors Avoid using index matching compounds if possible If an extremely good match is a concern characterize the connector interfaces under both dry and wet conditions The results will show you the level of return loss performance you can expect from the connectors dry and wet Use the cleaning methods described in this section for dry and for wet connections When ph...

Page 395: ......

Page 396: ...d also lists characters unique to the HP 70004A color display In the table codes 0 through 127 are ASCII Codes 128 through 255 are the HP 70004A color display characters Tables D 2 through D 4 list control codes and escape characters that locate the pen or clear or enhance text ASCII Codes Control Codes and Escape Characters D 1 ...

Page 397: ...American Standard Code for Information Table D 1 ASCII Characters codes 0 through 127 and HP 70004A Color Display Characters D 2 ASCII Codes Control Codes and Escape Characters ...

Page 398: ... functions listed in Tables D 3 and D 4 The characters in Table D 3 must be preceded by the ASCII code for escape 27 as shown by EC in the table Enter both the escape code and the characters between the delimiters for the label function Table D 3 Escape Characters that Control the Pen Clear Text and Scroll Text Character Description ECC Move pen right by one character ECG Move pen to the left side...

Page 399: ...ct the color behind letters enter an integer from 015 to 01 To return to the color selected by PEN enter a 0 EC v0S Colors can be selected with the escape sequence up to three times for each label The pen colors are not available on the HP 70205A graphics display or HP 70206A system graphics displays Sending pen color escape sequences to the the HP 70205A graphics display or HP 70206A system graph...

Page 400: ...nstruments such as the HP 70004A color display or can consist of one or more modules which are plugged into a mainframe or display When incorporated into a system the function of each module or stand alone instrument is determined by its position in the system As a visual aid all positions are displayed on a map called the address map The address map is is a grid consisting of a series of columns ...

Page 401: ...n the shaded area The address map contains two multi module instruments spectrum analyzers which are controlled by modules in row 0 The HP 70900B local oscillator source controls the modules in the shaded area The display module is neither a master nor a slave All modules have an HP MSIB address which is de ned as the row and column number where a module resides on the address map In the address m...

Page 402: ...ci cally each response represents a pulse that occurs every 1 PRF seconds with an amplitude proportional to the amplitude of the spectrum envelope This occurs for example when the spectrum analyzer bandwidth is wider than the pulse repetition frequency PRF of a pulsed transmission To check for broadband response vary the spectrum analyzer bandwidth sweep time or span width A broadband response is ...

Page 403: ...ds are CLEAR or OUTPUT in the HP BASIC language compatible functions See function continuous sweep mode Active traces are swept continuously The sweep begins each time the trigger conditions are met correction factors O sets applied to spectrum analyzer circuitry to compensate for circuit errors when using a particular input port The calibration functions can apply the o sets individually or all a...

Page 404: ...epresents a xed location on the horizontal axis of a trace Each point contains amplitude information enter statement Computer program line that receives data via HP IB external attenuation Attenuation located outside of the spectrum analyzer before the spectrum analyzer input external memory See user memory external mixing bands Available frequency bands when an external mixer is connected to the ...

Page 405: ...Drift is a measure of long term stability FTZ The abbreviation for Fernmeldewesen Technischen Zentrum This is the part of the German post o ce that regulates EMI electromagnetic interference function The spectrum analyzer and its display each contain a unique set of functions that are executed with front panel keys and programming commands The characteristics of these functions are determined by t...

Page 406: ...he amplitude of harmonic distortion products is dependent on the signal levels at the spectrum analyzer input and the mixer characteristics Not all harmonic distortion products may be visible To test a response for harmonic distortion attenuate the input signal by 10 dB while watching the display For each 10 dB change of attenuation the amplitude of true responses decreases 10 dB while the amplitu...

Page 407: ... 6 A 26 5 40 0 8 Q 33 0 50 0 10 U 40 0 60 0 10 V 50 0 75 0 14 E 60 0 90 0 16 W 75 0 110 0 18 F 90 0 140 0 24 D 110 0 170 0 30 G 140 0 220 0 36 Y 170 0 260 0 42 J 220 0 330 0 50 HP BASIC language system Forms the computer operating system that exercises the program examples in this manual HP IB Hewlett Packard Interface Bus Supports IEEE 488 and IEC 625 which are worldwide standards for instrument ...

Page 408: ...e user memory item A series of programming commands which form a shape for repeated graphics applications Created with the IT command key Spectrum analyzer functions are accessed by front panel keys The keys surrounding the graticule are called softkeys and access all the spectrum analyzer functions Commonly used functions can be executed with the keys on the instrument keypad located beneath the ...

Page 409: ...for the measurement of the refractive index of an unknown material In ber optics MZIs consist of bers and couplers In both cases optical radiation is split into two branches one branch is manipulated and then the two branches are recombined In the process of recombination the electric elds produce variable optical interference which is then analyzed The ber optic MZI can be used to measure the lin...

Page 410: ... register is set whenever a message appears in message area narrowband response Displayed on spectrum analyzer when the analyzer bandwidth is narrow enough to resolve the discrete frequency components of the received signal For example since the individual spectral components of a pulsed RF transmission are spaced at the pulse repetition frequency PRF the spectrum analyzer displays a narrowband re...

Page 411: ...to the computer all measurement results in parameter units Parameter Units Measured Data Fundamental Units Frequency Hertz Power dBm Ratio dB Voltage Volt Time Second Current Ampere Impedance Ohm peak detection mode Method of selecting values from continuous amplitude values detected PIN photodetector The PIN photodetector is the most important detector type due to its simiplicity stability and ba...

Page 412: ...e preselector tracking and a ects amplitude accuracy program le User memory le stored in external memory only The le contains user de ned variables traces functions or limit lines When recalled with NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN recall to or LOAD programming command le contents are stored in internal memory or reserved memory See user de ned variables user de ned traces user de ned functi...

Page 413: ...1P2 P2 dB Hz where 1P2 is the mean square optical intensity uctuation in a 1 Hz bandwidth at a given frequency and P is the average optical power The ratio of optical powers squared is equivalent to the ratio of the detected electrical powers Thus RIN can also be expressed as follows RIN Nelec PAVG elec db Hz where Nelec is the power spectral density of the photocurrent at a speci c frequency and ...

Page 414: ...at translates the video signal as seen at the envelope detector from analog information that is continuously changing amplitude values into digital information comprising a series of nite data points The translation process divides the analog information into intervals then chooses a value from each interval as the data point element The result is a combination of positive and negative peak detect...

Page 415: ...xecuting TS or FETCH programming command slave See address map softkeys Keys that surround the display area source Components in syntax diagram on which function operates span Equals the stop frequency minus the start frequency and determines the calibration of the horizontal axis of the spectrum analyzer spectrum analyzer The spectrum analyzer presents the energy distribution of a signal as a fun...

Page 416: ...he analyzer has sensed a hardware or operator usage error A programming command has been executed and its operation has been completed The measurement range has been swept measured The analyzer is prepared to sweep again The analyzer is displaying a message in the message area on the right side of the screen for example UNCAL or UNCOR Whenever a condition is satis ed the analyzer sets the correspo...

Page 417: ...ments simulate the pressing of the step keys steps Increment of change e ected by the front panel step keys 485 and 495 and the UP and DN programming command arguments stimulus response mode Analyzer is con gured to make stimulus response measurements The stimulus response mode is available in analyzer systems containing a tracking generator and is activated with the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNN...

Page 418: ...lly reduce to zero amplitude The TWNDOW programming command supplies three prede ned trace windows The FFT programming command executes the Fourier transform function tracking error Di erence between the tracking generator output frequency and the analyzer tuning This error a ects the accuracy of tracking generator measurements and should be adjusted to as small a value as possible The NNNNNNNNNNN...

Page 419: ... types ASCII and non ASCII Catalog of User Memory Stored Article Storing and Recalling Commands File Type Default File Pre x State register le Instrument settings and title line STOR SAVES LOAD RCLS ASCII s Program le STOR SAVED ASCII d Trace le STORE SAVET RCLT LOAD ASCII t 4USER5 keys le STOR LOAD RCLT SAVET ASCII u Limit line le STOR LOAD LIMISAV LIMIRCL ASCII l User de ned tracey TRDEF LOAD RC...

Page 420: ...Fundamentals chapter user state Refers to state of all analyzer parameters that are determined by the user These include All instrument settings for example center frequency plotter parameters length of trace A Adjustable preset conditions for example active input port when power is applied Contents of internal memory for example user de ned traces See reserved memory variable An alpha character f...

Page 421: ... a signal The wavelength is equal to the phase velocity the speed of light traveling in a dielectric material divided by the refractive index of the dielectric material divided by the frequency window See graphics window instrument window and trace window xnoise A programmable external noise source drive for noise gure measurements Toggles 28 Vdc to a Noise Source Drive connector on the front pane...

Page 422: ...ubler level hardware broken error 7021 6 28 6214 GHz error hardware warning error 6017 6 24 A A6 RAM checksum battery hardware warning error 6002 6 22 ACT indicator LED 1 7 1 22 active function blanking annotation for 1 2 changing the value of 1 2 readout 1 14 active indicators troubleshooting 5 3 Active Trace Processing Function 3 DIMEN On O 4 1 A A B 4 2 A B A On O 4 3 A B DL On O 4 3 A6A DL A B...

Page 423: ...isk error messages with an 6 2 ATTEN AutoMan 1 13 attenuation 1 14 attenuator coupling of 1 13 uncoupled 1 14 15 ATTENUATOR Section diagnostics error 0063 6 10 AutoMan 1 12 AutoMan softkey 1 2 B background tests troubleshooting 5 6 bad file operating error 2055 6 21 Bad IF ENDIF nesting operating error 2021 6 16 bad revision operating error 2056 6 21 bad volume operating error 2058 6 21 Bandwidth ...

Page 424: ... t finetune YTO hardware broken error 7013 6 26 catastrophic failures 5 22 26 catastrophic failure symptoms 5 22 CENTER 1 12 center frequency 1 14 15 setting the 1 12 character set 1 19 20 check preliminary 1 7 Check mixer bias operating error 2026 6 17 cleaning optical connectors C 2 4 Cmd out of sequence operating error 2010 6 14 Command syntax error operating error 2029 6 17 computation error 8...

Page 425: ...ION 6 3 0010 HP MSIB addr 70907 6 3 0011 No EMIM Section 6 3 0012 HP MSIB addr 70600 6 4 0013 No PRESELECTOR 6 4 0014 Incorrect System 6 4 0015 HP MSIB addr 70700 6 4 0020 21 4MHz input cable 6 4 0021 Video output cable 6 5 0022 LC bandwidths 6 5 0023 CRYSTAL bandwidths 6 5 0024 Problem ampl low 6 5 0025 Step gain amplifier 6 5 0026 Res BW accuracy 6 5 0027 Res BW amplitude 6 6 0028 Calibration at...

Page 426: ...ilure symptoms 5 22 troubleshooting 5 2 error message 1 19 20 troubleshooting 5 3 error messages 0001 diagnostics error 6 2 0002 diagnostics error 6 2 0003 diagnostics error 6 2 0004 diagnostics error 6 2 0005 diagnostics error 6 3 0007 diagnostics error 6 3 0008 diagnostics error 6 3 0009 diagnostics error 6 3 0010 diagnostics error 6 3 0011 diagnostics error 6 3 0012 diagnostics error 6 4 0013 d...

Page 427: ... 20 2048 operating error 6 20 2049 operating error 6 20 2050 operating error 6 20 2051 operating error 6 20 2052 operating error 6 20 2053 operating error 6 20 2054 operating error 6 20 2055 operating error 6 21 2056 operating error 6 21 2057 operating error 6 21 2058 operating error 6 21 2059 operating error 6 21 2060 operating error 6 21 2802 operating error 6 21 2803 operating error 6 21 6000 h...

Page 428: ...2 computation error 6 35 8003 computation error 6 35 8004 computation error 6 35 8005 computation error 6 35 8006 computation error 6 35 8999 computation error 6 35 computation 8000 8999 6 35 factory use only 9000 9999 6 36 hardware broken 7000 7999 6 25 hardware warning 6000 6999 6 22 not listed 6 1 operating 2000 2999 6 13 remote retrival 6 1 system diagnostics 0001 0070 6 2 user application 000...

Page 429: ...arning error 6012 6 23 H hardware broken errors 7000 7999 6 25 warning errors 6000 6999 6 22 hardware broken error 7000 ROM Check error 6 25 7001 LO unleveled 6 25 7002 First LO unleveled 6 25 7003 Second LO unlocked 6 25 7004 300 MHz error 6 25 7005 321 4 MHz error 6 25 7006 21 4 MHz error 6 25 7007 Cal error 6 25 7008 FFS handshake 6 25 7009 ROM 2 check error 6 26 7010 FFS is unlocked 6 26 7011 ...

Page 430: ...on for 4 80 horizontal graticule lines control positioning of 4 71 HP 70300A RF tracking generator block diagram A 11 A 12 inputs and outputs B 1 module description B 1 HP 70301A microwave tracking generator block diagram A 11 A 12 inputs and outputs B 1 module description B 1 HP 70310A precision frequency reference block diagram A 10 inputs and outputs B 6 module description B 6 HP 70600A presele...

Page 431: ...error hardware broken error 7036 6 31 HP MSIB troubleshooting module removal method 5 25 5 26 HP MSIB troubleshooting procedures display troubleshooting utility 5 25 HP MSIB Troubleshooting Utility 5 7 I IDL 1 22 Idler is unlocked hardware broken error 7031 6 30 Idler is unlocked operating error 2028 6 17 Idler tuning range hardware warning error 6005 6 22 IF step gain ability to control 4 176 Ill...

Page 432: ... MENU keys 2 1 keyboard HP HIL 1 4 keypad instrument 1 3 4 1 5 1 11 numeric 1 2 1 3 4 1 13 L Label too long operating error 2016 6 15 LC bandwidths diagnostics error 0022 6 5 LC board diagnostics error 0032 6 6 LCL 1 2 1 3 LG LN and DETSEL control coupling between 4 48 Lightwave Function LAMBDA 4 81 LW MODE OptElec 4 93 RSPSVTY AutoMan 4 138 lightwave signal analyzer B 12 annotation 1 17 18 basic ...

Page 433: ...7 linear math NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN A6A DL A B C 4 7 linear math NNNNNNNNNNNNNNNNNNNNNNNNNNNN A6A DL B 4 8 linear math NNNNNNNNNNNNNNNNNNNNNNNNNNNN A6A DL C 4 8 linear math NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN A6DL A B C 4 12 linear math NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN trace linmath 4 166 log math NNNNNNNNNNNNNNNNN A6A0B 4 9 log math NNNNNNNNNNNNNNNNNNNNNNNNNN A...

Page 434: ...or O 4 4 ACTIVE MARKER marker O 4 4 ALC ALT tracking generator O 4 5 ALC EXT tracking generator O 4 5 ALC NRM tracking generator On 4 6 alc track tracking generator Not a ected by 4IP5 4 6 A6A DL A B active trace processing O 4 7 A6A DL A B C active trace processing O 4 7 A6A DL B active trace processing O 4 8 A6A DL C active trace processing O 4 8 A6A0B active trace processing O 4 9 A6A0B DL acti...

Page 435: ...e dependent 4 36 CF marker Markers o 4 37 CF STEP AutoMan frequency Set to SPAN 10 4 38 CF STEP marker Markers o 4 37 CHANGE PREFIX memory related Last pre x 4 39 CLEAR TO END programming related and display O 4 39 CLEAR WRT A active trace processing On 4 39 CLEAR WRT B active trace processing O 4 40 CLEAR WRT C active trace processing O 4 40 C 6 DAC SEARCH preselector O 4 41 CLOSE PIT marker O 4 ...

Page 436: ...ected by 4IP5 4 71 GRAT On O display On 4 71 GRATSCR On O display O 4 72 GROUND signal detection O 4 72 HIGHEST PEAK marker Markers o 4 73 HOLD display On 4 73 HORZ OFFSET active trace processing O 4 74 HPIB DISK memory related Not a ected by 4IP5 4 74 HP MSIB CARD memory related Not a ected by 4IP5 4 75 HYS LEVEL sweep and trigger 3 dB 4 76 IMAGE N START signal identi cation 1 4 76 IMAGE N STOP s...

Page 437: ...rker O 4 103 NEXT SEGMENT limit line O 4 104 NOISE ON OFF power meter O 4 105 NO OF STATES instrument state Not a ected by 4IP5 4 104 NORMAL signal detection On 4 106 oneshot math active trace processing Not a ected by 4IP5 4 106 OVERSWP On O sweep and trigger O 4 106 PARTIAL ERASE memory related Not a ected by 4IP5 4 107 PATHLOK On O signal path O 4 107 PAUSE programming related O 4 108 PEAK EXCU...

Page 438: ... signal detection O 4 140 SAVE LIMIT memory related and limit line O 4 141 SAVE MEMORY memory related O 4 141 save memory related Not a ected by 4IP5 4 140 SAVE STATE memory related and instrument state O 4 142 save to memory related Not a ected by 4IP5 4 142 SAVE TRACE A memory related O 4 142 SAVE USERKEY memory related and instrument state O 4 144 SAVE USER user de ned O 4 143 select adc signal...

Page 439: ... ected by 4IP5 4 172 UPPER AMPCOR amplitude correction O 4 173 UPPER LOWER limit line Upper 4 174 USR PWR On O power meter O 4 175 VBW AMP On O calibration On 4 175 VBW CPL Rx SA bandwidth SA 4 176 VBW RBW RATIO bandwidth 1 4 176 VERT OFFSET active trace processing O 4 177 VID AVG On O active trace processing O 100 4 178 VID BW AutoMan bandwidth Auto 4 178 VIDEO LEVEL sweep and trigger 0100 dBm 4 ...

Page 440: ...0 No errors 6 13 2001 Illegal command 6 13 2002 Illegal parameter 6 13 2003 Missing parameter 6 13 2004 Illegal character 6 13 2005 Illegal character set 6 13 2006 Parm out of range 6 13 2007 Missing terminator 6 14 2008 Output unleveled 6 14 2009 Protocol error 6 14 2010 Cmd out of sequence 6 14 2011 A Hardware Selected 6 14 2011 Memory overflow 6 14 2012 B Hardware Selected 6 14 2013 Item not fo...

Page 441: ...roing indicator 1 17 18 Power meter failed hardware broken error 7803 6 34 Power Meter Function AUTZERO On O 4 20 NOISE ON OFF 4 105 power meter 4 112 PWR AVG On O 4 121 PWR BAR On O 4 122 PWR MTR OptElec 4 122 USR PWR On O 4 174 ZERO 4 183 Power supply error hardware broken error 7033 6 30 Preselector disabled operating error 2047 6 20 Preselector Function CENTER DELTA 4 36 C 6 DAC SEARCH 4 41 pr...

Page 442: ...level support 5 27 system level repair 5 28 REPEAT UNTIL error operating error 2022 6 16 REPORT ERRORS 1 22 1 26 Res BW accuracy diagnostics error 0026 6 5 Res BW accuracy diagnostics error 0036 6 7 Res BW amplitude diagnostics error 0027 6 6 Res BW amplitude diagnostics error 0037 6 7 RES BW AutoMan 1 13 Res BW CF ampl diagnostics error 0051 6 9 Res BW CF ampl diagnostics error 0052 6 9 Res BW CF...

Page 443: ...band only operating error 2033 6 18 softkey menu amplitude 2 3 bandwidth 2 5 frequency 2 2 instrument state 2 7 marker 2 4 miscellaneous 2 12 sweep time 2 5 trace 2 6 Softkey Menu Map NNNNNNNNNNNNNNNNN Amptd 2 3 NNNNNNNNNNNNNNNNNNNN BW Swp 2 5 NNNNNNNNNNNNNN Freq 2 2 NNNNNNNNNNNNNNNNNNNN Marker 2 4 NNNNNNNNNNNNNN Misc 2 12 NNNNNNNNNNNNNNNNN State 2 7 NNNNNNNNNNNNNNNNNNNN Traces 2 6 softkeys 1 1 1 ...

Page 444: ...ystem Diagnostics remotely 5 15 running System Diagnostics software 5 14 running the system diagnostics utilities 5 20 SAVE STATE utility 5 20 troubleshooting procedures 5 14 system diagnostics software 5 7 System error slave operating error 2025 6 16 T Test switch on operating error 2034 6 18 theory of operation lightwave signal analyzer A 2 spectrum analyzer A 1 three dimensional horizontal posi...

Page 445: ...ges remotely 5 13 running System Diagnostics software 5 14 saving the contents of RAM 5 17 System Diagnostics 5 14 testing a lightwave signal analyzer 5 12 5 13 testing analyzer remotely 5 13 troubleshooting a lightwave signal analyzer 5 9 troubleshooting a spectrum analyzer 5 9 troubleshooting from the front panel 5 9 5 12 troubleshooting over HP IB 5 9 5 13 using Analyzer Test 5 12 using selecte...

Page 446: ...6 6 Video proc 0 volt hardware broken error 7029 6 30 Video proc 2 volt hardware broken error 7030 6 30 volume full operating error 2057 6 21 W warning Possible compression warning 16007 4 161 write protect operating error 2054 6 20 Y YTF drive error hardware broken error 7077 6 33 YTO 1 22 YTO is unlocked hardware broken error 7016 6 27 YTO tuning range hardware broken error 7044 6 32 YTO tuning ...

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