Agilent Technologies FieldFox MW N9913A Page 5 Service Manual Download

Page: 5 / 156

Contents

Service Guide?N9927-90003

Contents-1

Information in This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-2
Safety Symbols   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-3
General Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-3

Safety Earth Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-3
Before Applying Power  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-4
Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-4

Electrostatic Discharge Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Regulatory Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Instrument Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Battery Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

General Product Information

Information in This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Physical Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Electrical Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Analyzer Models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Analyzer Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Option Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Agilent Support, Services, and Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Tests and Adjustments

Information in This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Protect Against Electrostatic Discharge (ESD). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3-3
Allow the Analyzer to Warm Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3-3
Review the Principles of Connector Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3-4

Service Test Equipment  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3-5
Before Returning an Instrument to a Customer  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3-6
Operational Check  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3-7

Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Performance Tests (Agilent N7841A Software Package). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Performance Verification Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Adjustments (Agilent N7841A Software Package) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Adjustments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Troubleshooting

Check the Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Summary of Contents for FieldFox MW N9913A

Page 1: ...for the following instruments FieldFox MW Analyzers N9913A N9914A N9915A N9916A N9917A N9918A FieldFox MW VNA N9925A N9926A N9927A N9928A FieldFox MW SA N9935A N9936A N9937A N9938A Manufacturing Part Number Part Number N9927 90003 Printed in USA July 2014 Agilent Technologies Inc 2013 2014 ...

Page 2: ...contract Software is delivered and licensed as Commercial computer software as defined in DFAR 252 227 7014 June 1995 or as a commercial item as defined in FAR 2 101 a or as Restricted computer software as defined in FAR 52 227 19 June 1987 or any equivalent agency regulation or contract clause Use duplication or disclosure of Software is subject to Agilent Technologies standard commercial license...

Page 3: ...ll pertinent safety notes for using this product are located in Chapter 1 Safety and Regulatory Information WARNING Warning denotes a hazard It calls attention to a procedure which if not correctly performed or adhered to could result in injury or loss of life Do not proceed beyond a warning note until the indicated conditions are fully understood and met CAUTION Caution denotes a hazard It calls ...

Page 4: ...the product is an abbreviated form of the User s Guide containing some of the most commonly referred to information The pages of the Quick Reference Guide are laminated with clear plastic to resist damage when used outdoors Printing Copies of Documentation from the Web To print copies of documentation from the Web download the PDF file from the Agilent web site Go to www agilent com Enter the docu...

Page 5: ...ptions 2 8 Calibration Options 2 8 Contacting Agilent 2 9 Shipping Your Analyzer to Agilent for Service or Repair 2 9 3 Tests and Adjustments Information in This Chapter 3 2 Before You Begin 3 3 Protect Against Electrostatic Discharge ESD 3 3 Allow the Analyzer to Warm Up 3 3 Review the Principles of Connector Care 3 4 Service Test Equipment 3 5 Before Returning an Instrument to a Customer 3 6 Ope...

Page 6: ... Group 5 7 A4 RF Board 5 7 A5 System Board 5 13 A6 SOM Board 5 17 A7 Real Time Clock Board 5 17 Main Battery 5 17 Grounding and Power 5 18 Grounding 5 18 Voltages and Power Supplies 5 18 Power Control and Management 5 19 Battery Related Information 5 20 Operation in Modes 5 22 CAT NA and VVM Modes 5 24 SA and CPM Mode 5 24 Power Meter Mode 5 25 Temperature Related Information 5 25 User Calibration...

Page 7: ...mblies 7 21 Removing and Replacing the Measurement Group Assemblies 7 27 Post Repair Procedures 7 44 Manual Checks and Procedures 7 45 8 General Purpose Maintenance and Service Procedures Information in This Chapter 8 2 Service Related User Operations 8 3 To View Currently Installed Options 8 3 To View the Current Firmware Revision Etc 8 3 To View the Error Log 8 3 To View Temperature Readings 8 4...

Page 8: ...Contents 4 Service Guide N9927 90003 Contents ...

Page 9: ...N9927 90003 1 1 1 Safety and Regulatory Information ...

Page 10: ...e Summary of Content Start Page Safety Symbols Descriptions of CAUTION and WARNING symbols used throughout this manual Page 1 3 General Safety Considerations A list of safety points to consider when servicing your network analyzer Page 1 3 Electrostatic Discharge Protection A discussion of electrostatic discharge ESD and related recommendations and requirements for ESD protection Page 1 5 Regulato...

Page 11: ...to a procedure which if not correctly performed or adhered to could result in injury or loss of life Do not proceed beyond a warning note until the indicated conditions are fully understood and met General Safety Considerations Safety Earth Ground WARNING This is a Safety Class I product provided with a protective earthing ground incorporated in the power cord The mains plug shall only be inserted...

Page 12: ...rvicing WARNING These servicing instructions are for use by qualified personnel only To avoid electrical shock do not perform any servicing unless you are qualified to do so WARNING Danger of explosion if battery is incorrectly replaced Replace only with the same or equivalent type recommended Discard used batteries according to local ordinances and or manufacturer s instructions WARNING No operat...

Page 13: ... a heel strap when working in an area with a conductive floor If you are uncertain about the conductivity of your floor wear a heel strap always ground yourself before you clean inspect or make a connection to a static sensitive device or test port You can for example grasp the grounded outer shell of the test port or cable connector briefly always ground the center conductor of a test cable befor...

Page 14: ...the Canadian Interference Causing Equipment Standard ICES 001 This is a symbol of an Industrial Scientific and Medical Group 1 Class A product This is a required mark signifying compliance with an EMC requirement The C Tick mark is a registered trademark of the Australian Spectrum Management Agency This product complies with the WEEE Directive 2002 96 EC marking requirements The affixed label indi...

Page 15: ...our country s requirements If required you may return the battery to Agilent Technologies for disposal Refer to Contacting Agilent on page 2 9 for assistance For instructions on removing and replacing the primary power battery refer to Removing and Replacing the Main Battery on page 7 6 For instructions on removing and replacing the RTC real time clock battery located on the A3 front panel interfa...

Page 16: ...1 8 N9927 90003 Safety and Regulatory Information FieldFox Analyzer Regulatory Information ...

Page 17: ...N9927 90003 2 1 2 General Product Information ...

Page 18: ...ilent on page 2 9 and to Chapter 3 Tests and Adjustments Section Title Summary of Content Start Page Maintenance Cleaning instructions for the external surfaces of your analyzer Information about electrical maintenance of your analyzer Page 2 2 Analyzer Models A list of the models available for the microwave network analyzers Page 2 3 Analyzer Options A list of the options available for the microw...

Page 19: ...zer General Product Information Analyzer Models Analyzer Models Max Freq GHz N991x Combo N992x VNA N993x SA 4 N9913A X X 6 5 N9914A X X 9 N9915A N9925A N9935A 14 N9916A N9926A N9936A 18 N9917A N9927A N9937A 26 5 N9918A N9928A N9938A ...

Page 20: ...2 QuickCal Available Available 210 VNA Transmission Reflection Available Base Model 211 VNA Full 2 Port S Parameters Available Available 220 Tracking Generator See 210 Available 233 Spectrum Analyzer Available Base Model 235 Preamplifier Available Available 236 Interference Analyzer and Spectrogram Available Available 238 Spectrum Analyzer Time Gating Available Available 302 USB Power Sensor Suppo...

Page 21: ...tion 100 provides 3 5 mm input and output connectors Available on N9938A model only 26 5 GHz at initial purchase Option 112 QuickCal Option 112 provides a calibration that is performed automatically using calibration standards that are built in to the FieldFox Calibration standards are automatically switched in as needed QuickCal is ideal for making quick DTF and cable loss measurements without ta...

Page 22: ...bles connectors and antennas The full band tracking generator source can also be decoupled to act as a stand alone source that can be used to stimulate an active or passive component optionally using the spectrum analyzer for measurement Option 233 Spectrum Analyzer Option 233 adds a high performance full band spectrum analyzer including four traces different detector types radio standard selectio...

Page 23: ...g Option 309 DC Bias Variable Voltage Source Option 309 adds an integrated built in variable voltage DC bias source to the FieldFox analyzer The source provides 1 to 32 VDC with maximum current of 650 mA and 7 watts maximum power The DC bias source can provide DC power to amplifiers under test and bias tower mounted amplifiers TMA when engineers need to sweep through the TMA to reach the antenna T...

Page 24: ...nding calibration data report This calibration conforms to ISO 9001 ISO 17025 Standards Compliant Calibration A complete set of measurements that test the analyzer to the manufacturer s published specifications It includes a calibration label an ISO 17025 calibration certificate and the corresponding calibration data measurement uncertainties and guardbands on all customer specifications This cali...

Page 25: ...ping Your Analyzer to Agilent for Service or Repair IMPORTANTAgilent Technologies reserves the right to reformat or replace the internal flash drive in your analyzer as part of its repair This will erase all user information stored on the drive It is imperative therefore that you make a backup copy of your critical test data located on the analyzer s flash drive before shipping it to Agilent for r...

Page 26: ...2 10 N9927 90003 General Product Information FieldFox Analyzer Agilent Support Services and Assistance ...

Page 27: ...N9927 90003 3 1 3 Tests and Adjustments ...

Page 28: ...tems to consider or procedures to perform before testing is begun Verify the operating environment Protect Against Electrostatic Discharge ESD Allow the Analyzer to Warm Up Review the Principles of Connector Care Page 3 3 Service Test Equipment A list of additional equipment recommended for servicing the FieldFox analyzer Page 3 5 Before Returning an Instrument to a Customer A list of things to do...

Page 29: ...r care Protect Against Electrostatic Discharge ESD This is important If not properly protected against electrostatic discharge can seriously damage your analyzer resulting in costly repair CAUTION To reduce the chance of electrostatic discharge follow all of the recommendations outlined in Electrostatic Discharge Protection on page 1 5 for all of the procedures in this chapter Allow the Analyzer t...

Page 30: ...dapters loose Visual Inspection Do Inspect all connectors carefully Do Not Use a damaged connector ever Look for metal particles scratches and dents Connector Cleaning Do Try compressed air first Do Not Use any abrasives Use isopropyl alcohol1 1 Cleaning connectors with alcohol shall only be done with the instrument s power cord removed and in a well ventilated area Allow all residual alcohol mois...

Page 31: ...r larger Small free standing fan Used to cool the analyzer if internal temperature is too high See DUT Warmup in the Getting Started section of the N7841A help file for usage instructions Generic small office fan of approximately six inches in diameter is sufficient Cal kit Cal kit compatible with port connectors Mini SD flash card Required to re load firmware onto the A6 SOM board A mini sized Se...

Page 32: ...lay Brightness to 80 via System 7 Preferences Preferences etc Perform an Operational Check as described in the following section Connect and disconnect the external battery charger while the FieldFox is operating and confirm that the power cord icon is displayed appropriately at the top of the display Charge the battery to 80 or higher Press System System Configuration More Date and Time See http ...

Page 33: ...t is SA then skip to step 5 below If the active measurement is S11 or CAT then complete this step below Connect a short to Port 1 Displayed trace should be within 4 dB of zero Connect a load to Port 1 Displayed trace should approximate the value of load typically it will be below 20 dB 20 dB for CAT mode 3 Press Mode If NA is not available skip to step 5 below If NA is available then continue at s...

Page 34: ...race should be below the following limits Up to 4 GHz limit 45 dBm Up to 6 5 GHz limit 42 dBm Up to 9 GHz limit 39 dBm Up to 14 GHz limit 33 dBm Up to 18 GHz limit 28 dBm Up to 26 5 GHz limit 18 dBm The general slope of the trace should trend upward A flat trace indicates an uncalibrated condition that requires adjustments If a segment of the trace is offset by more than 10 dBm from the general sl...

Page 35: ...zer and the SA spectrum analyzer specific functionality Total test time may be up to 3 hours depending upon model and options installed Details for these tests and recommended troubleshooting information can be found in the N7841A help file Performance Verification Tests Error Terms Test Note that the associated adjustment should be performed every 12 months See Adjustments Agilent N7841A Software...

Page 36: ...analyzer and the SA spectrum analyzer specific functions Total adjustment time may be up to 5 hours depending upon models and options installed If multiple adjustments are to be performed perform them in the order listed by the N7841A software Details for these adjustments and recommended troubleshooting information can be found in the N7841A help file Adjustments Max Power and IF Overload Adjustm...

Page 37: ...N9927 90003 4 1 4 Troubleshooting ...

Page 38: ...t Start Page Getting Started with Troubleshooting A starting point to begin troubleshooting Page 4 4 Power Up Troubleshooting Power up problems Page 4 6 Front Panel Group Troubleshooting Problems with the front panel assemblies of the analyzer Does the display appear correct Is the sound working Do the front panel keys function properly Does the front panel USB and SD card connection function prop...

Page 39: ...Electrostatic Discharge Protection on page 1 5 for all of the procedures in this chapter Assembly Replacement Sequence After identifying the problem requiring an assembly to be replaced follow these steps Step 1 Order a replacement assembly Refer to Chapter 6 Replaceable Parts Step 2 Replace the faulty assembly and determine what adjustments are necessary Refer to Chapter 7 Repair and Replacement ...

Page 40: ...llowing checks 1 Does the analyzer have power available It is recommended that the battery is installed and the AC power adapter is also connected 2 Does the analyzer turn On and Off when the On Off Button is pressed When the unit is on the green LED below the button should light 3 Does the analyzer power up normally into its default mode If not see Power Up Troubleshooting on page 4 6 4 If other ...

Page 41: ...raph in Figure 4 1 to help direct you to the correct section for troubleshooting the analyzer Figure 4 1 Troubleshooting Organization Flowchart Go to Front Panel Group Troubleshooting on page 4 7 Go to Measurement Group Troubleshooting on page 4 9 Go to Power Up Troubleshooting on page 4 6 Go to Power Up Troubleshooting on page 4 6 ...

Page 42: ...nstalling firmware using the firmware upgrade process described in Chapter 8 Assume corrupted firmware on the A6 SOM board follow the Install Firmware from SD Card near the end of Chapter 7 If the display is dark but the unit may have booted successfully Wait for three minutes to make sure the boot process has completed then press any front panel key If the boot process has completed successfully ...

Page 43: ...lue is changed Plug headphones into the unit if there is no sound from the internal speaker The internal speaker is disabled when headphones are plugged in If the audio is still not heard the System board may be faulty Refer to Replacing the A5 System Board on page 7 35 Checking the Front Panel Keys To check the front panel keys push each labeled key and compare with the specific functions If all ...

Page 44: ... memory or SD memory card Wait 15 seconds for the analyzer to verify the device connection and then check the operation of the USB flash memory or SD memory card by performing the recall function Save Recall If the device performs correctly the USB or SD Card port is functioning properly If the device does not perform correctly the System board is faulty Refer to Replacing the A5 System Board on p...

Page 45: ...is connected directly at the test ports PORT 1 and or PORT 2 CalReady corrects measurements when the FieldFox is turned ON when Preset is pressed and when a measurement is created with no other correction in place If you are seeing a problem at Preset perform the standard S parameter test set troubleshooting procedure starting with the following procedure Checking the A B R1 and R2 Signals NA Mode...

Page 46: ... may however be a minor failure in the analyzer To test further 1 Go to Chapter 3 Tests and Adjustments and perform all the tests indicated in the N7841A TME software 2 If a problem still exists contact Agilent Refer to Contacting Agilent on page 2 9 If any of the traces are not present are noisy or distorted or are at an incorrect level then there is a problem with the analyzer s measurement syst...

Page 47: ...ard can be verified using a signal source and a functioning spectrum analyzer capable of measuring a 33 75 MHz signal Verifying the 33 75 MHz I F Output Set the signal source for a 1 GHz CW signal at 0 dBm If possible verify the signal source output frequency and power level are correct by using a functioning spectrum analyzer as illustrated in Figure 4 3 Figure 4 3 1 GHz CW Signal ...

Page 48: ...Open that spring door and locate the IF Out SMB m connector Connect one end of a test cable to the IF Out connector on the side of the instrument Connect the other end of the test cable to the functioning spectrum analyzer Tune the functioning spectrum analyzer to 33 75 MHz The I F Out signal level should measure 33 75 MHz at approximately 16 dBm as illustrated in Figure 4 5 Figure 4 4 33 75 MHz I...

Page 49: ...sured 16 dBm because the A4 R F Board has 6 dB of conversion loss If the input attenuator is changed from 10 dB to 0 dB the signal will change by 10 dB to 6 dBm You can verify the input attenuator performance referencing the Table 4 1 If the 33 75 MHz I F Output level is not correct or the input attenuator performance is out of tolerance the most likely cause is the A4 R F Board Table 4 1 Input At...

Page 50: ...4 14 N9927 90003 Troubleshooting FieldFox Analyzer Measurement Group Troubleshooting ...

Page 51: ...N9927 90003 5 1 5 Theory of Operation ...

Page 52: ...unctional groups of the analyzer page 5 3 Front Panel Group Operation of the assemblies associated with the front panel group of assemblies page 5 5 Measurement Group Operation of the assemblies associated with the measurement group of assemblies page 5 7 Operation in Modes Description of the different operating modes and what hardware is used in each mode page 5 22 Temperature Related Information...

Page 53: ...m of the overall RF analyzer system All FieldFox analyzers covered by this manual have the same hardware Options to increase functionality are enabled via licenses additional hardware is not required Functional Groups of the Analyzer The operation of the analyzer can be separated into two major functional groups Each group consists of assemblies that perform distinct functions Some of the assembli...

Page 54: ...5 4 N9927 90003 Theory of Operation FieldFox Analyzer Analyzer System Operation Figure 5 1 Overall Block Diagram ...

Page 55: ...f LED is controlled by a signal from the A5 System board The connections for the On Off Button and LED are direct to the A5 System board LCD Backlight Power for the backlight on the A2 LCD assembly is generated on the A3 Front Panel Interface board Digital 5 volts is converted to approximately 25 volts The actual voltage determines the brightness of the backlight Two control lines from the A5 Syst...

Page 56: ...d drive circuitry and backlight inverter The LCD backlight is created by LED s connected in parallel stacks Backlight brightness is a function of the backlight power that ranges from 22 to 27 volts Refer to LCD Backlight on page 5 5 for more information The backlight LED s are arranged along the top and bottom edges of the display There are three stacks on each edge ...

Page 57: ...easurement group consists of the A4 RF Board A5 System Board A6 SOM Board A7 Real Time Clock Board Main Battery A simplified RF block diagram is provided in Figure 5 2 A simplified system block diagram is provided in Figure 5 3 A4 RF Board A basic function of the A4 RF board is to provide a signal source and receivers for the analyzer functions There are two sections to the A4 RF board NA RF secti...

Page 58: ...5 8 N9927 90003 Theory of Operation FieldFox Analyzer Measurement Group Figure 5 2 Simplified RF Block Diagram ...

Page 59: ... same time The 90 MHz time base is also used to generate a source signal in the source synthesizer that covers the frequency range of 10 MHz to 26 5 GHz The source signal is generally rich in harmonic content This is acceptable because the signal is used with tuned receivers The frequency bands for the NA circuitry on the RF board are listed below Band Instrument Start Stop P1 0 030 2 035 2 2 035 ...

Page 60: ...ing from firmware A 06 18 the default output power level is 15 dBm The reflectometer performs three functions It passes the source output signal to either PORT 1 or PORT 2 It samples the source output to either PORT 1 or PORT 2 It samples the incoming signal at either PORT 1 or PORT 2 The sampled signals are mixed with the LO signal to produce three 390 kHz IF signals NA A NA B and NA R The reflec...

Page 61: ...s occurs because the noise figure of the overall system is improved Improving the displayed average noise level of the system enables the user to analyze low level input signals The 1st 2nd and 3rd converters are used to downconvert the input signal to a final I F of 33 75 MHz That I F is fed to the ADC on the A5 System board This final I F on the output of the ADC can be measured at the IF Out SM...

Page 62: ... converter circuitry Reflectometer put into a low power state High Band Pre amp high band section of the pre amp turned off The load switching for the Source and LO sections is accomplished on the A5 System board via the Analog Linear Regulators and Load Switching circuitry The load switching for the Reflectometer and High Band Preamp is accomplished on the A4 RF board Other Circuitry The FPGA Fie...

Page 63: ...A R NA A NA B and SA IF from the A4 RF board The A6 SOM System on Module board is mounted directly on the A5 System board All external connections for the analyzer come through the A5 system board except for the PORT 2 and PORT 1 ports The A5 System board also controls the power switching and power management The instrument model number and serial number are stored on the A5 System board ...

Page 64: ...5 14 N9927 90003 Theory of Operation FieldFox Analyzer Measurement Group Figure 5 3 Simplified System Board Block Diagram ...

Page 65: ...the A6 SOM board CPU via a serial port UART It stores the instrument model number and serial number USB Hub This circuitry expands the number of USB ports available to the FieldFox firmware Power Management and Power Supplies Seven different analog supply voltages are generated from the Unreg DC All of these are used on the A4 RF board and some are used on the A5 System board Some sections of the ...

Page 66: ...4 RF board The input to one of the ADC s is multiplexed between the NA A and NA B input signals The 14 bit ADCs sample at a rate of 30 mega samples per second Each ADC may be put into a low power mode when not active Temperature Sensors The SB1 Temp Sensor is located on the A4 RF board side of the A5 System board near the headphone jack J3 The SB2 Temp Sensor is on the A4 RF board side of the A5 S...

Page 67: ...se interface lines The A6 SOM board is powered by the 3 3 volt digital supply Licenses which enable instrument options are stored in the A6 SOM flash ROM A7 Real Time Clock Board The battery for the RTC real time clock on the A7 RTC is connected to the A6 SOM board via the A5 System board The battery powers the RTC when the FieldFox is powered off Chapter 7 provides instructions for replacing the ...

Page 68: ...within the analyzer Digital 5 volts generated from Unreg DC on the A3 Front Panel Interface board controlled by the System Monitor on the A5 System board and used on the A3 A4 and A5 boards Digital 3 3 volts generated from Unreg DC on the A3 Front Panel Interface board on off functions controlled by the System Monitor on the A5 System board and used on the A2 LCD assembly and A3 A4 A5 and A6 board...

Page 69: ...problems Simply re apply power No firmware problems are expected Of course this does not apply during a firmware upgrade Smart Power Management The analyzer uses extensive load switching to minimize power dissipation This is termed Smart Power Management SPM There are two motivations for power management to extend battery run time to prevent overheating Sections of the circuitry are selectively po...

Page 70: ...y Both the battery charging circuit and the System Monitor read battery information over the Smart Batt Bus The battery temperature reported by the analyzer is based on a sensor inside the battery Temperature information is available over the Smart Batt Bus The thermistor connection T on the battery is not used The Smart Battery circuit may shut down the battery when the temperature is out of the ...

Page 71: ...f the battery is charging If the analyzer is On the lightening bolt is displayed in the battery icon If the analyzer is Off the LED below the On Off Button slowly flashes orange with increasing intensity If the analyzer is in Standby turn the analyzer on and observe the battery icon The battery charges much faster up to 70 of its full charge than it does above 70 of full charge Battery Life When a...

Page 72: ...make basic measurements Additional modes will provide customized user interfaces but will not change how the basic measurements are performed The following table indicates various modes in FieldFox analyzers and the option dependencies See the Service Related User Operations section of Chapter 8 for more details Modes CAT NA SA VVM Power Meter USB Sensor Power Meter Built In Standard Option 210 Op...

Page 73: ...echanical Cal Cal OFF ON View Cal Standard Option 112 Standard Standard Standard VVM Measure 1 Port Cable Trimming 2 Port Transmission B A A B Option 308 Option 308 210 Option 308 210 211 Option 308 210 211 SA Measure Radio Standard Channel Measurements Tune Listen Interference Analysis Source Option 233 Option 233 Option 233 Option 236 Option 233 210 SA Source Source Enable OFF ON Source Mode CW ...

Page 74: ... control for them The displayed measured value for a given signal is automatically compensated for in the current Attn and PA settings For instance if an incoming signal is measured at 70 dBm with the RF IN Atten set to 5 dB and PA out changing to PA in will give a measured value of approximately 70 because the 22 dB for the PA is only nominal The difference seen in the trace will be that the nois...

Page 75: ...n in the case of extreme temperatures See Chapter 8 for instructions on viewing temperature readings See the FieldFox Analyzer User s Guide Part Number N9927 90001 FieldFox High Temperature Protection section for information about operation at high temperature During normal operation as each SA measurement is taken the current RF2 temperature reading is compared tot he temperature stored for the F...

Page 76: ... factory or during annual calibration a preset calibration is stored in the analyzer CalReady The preset calibration covers the full frequency range of the analyzer The preset calibration is active whenever CalRdy is displayed on the left side of the screen Presetting the analyzer activates the preset calibration The preset calibration provides very good measurement performance at the PORT 1 and P...

Page 77: ...ration Mechanical Calibration is performed using discrete standards from a Cal Kit Several Cal Kit definitions are built into the FieldFox Mechanical Cals are extremely accurate when performed using the correct Cal Kits with standards that are clean and in good repair and when using correct connection procedures ...

Page 78: ... at the root of the destination device as the destination for the copied file s This characteristic generally makes it impossible to copy a file into the desired directory under UserData in the A6 SOM board flash memory This limits the usefulness of copying files to or within UserData Operational Files Results from adjustments performed under TME see Chapter 3 not directly available to user File r...

Page 79: ...rmware revision The following information will be included in the display Firmware Release FieldFox application firmware revision FPGA Rev code revision for FPGA SBM Boot Rev revision of boot code for System Microcontroller SBM Main Rev revision of main code for System Microcontoller A firmware upgrade includes three sections the FieldFox application firmware and the Windows CE operation system on...

Page 80: ...s on reviewing and configuring LAN settings The LAN interface supports Auto MDIX When a LAN cable is connected to the FieldFox if the other end of the cable supports Auto MDIX there is no need for a cross over cable There are two LEDs on the LAN connector When there is successful communication over a LAN cable both LEDs are active If both LEDs are not active consider using a cross over cable ...

Page 81: ...N9927 90003 6 1 6 Replaceable Parts ...

Page 82: ... for your analyzer contains ordering information for new assemblies and rebuilt exchange assemblies Section Title Summary of Content Start Page Ordering Information How to order a replaceable part from Agilent Technologies Page 6 3 Assembly Replacement Procedure The correct sequence for determining the failure of and replacing a defective assembly Page 6 4 Replaceable Parts Listings Tables with il...

Page 83: ...nologies for instructions on where to send the order Refer to Contacting Agilent on page 2 9 To order a part that is not listed in the replaceable parts lists include the instrument model number and complete instrument serial number include the description and function of the part indicate the quantity required Contact Agilent Technologies for instructions on where to send the order Refer to Conta...

Page 84: ...e troubleshooting chapter that identifies the faulty assembly Step 2 Order a replacement assembly Refer to this chapter for part numbers and ordering information Step 3 Replace the faulty assembly and determine what adjustments and performance tests are necessary Refer to Chapter 7 Repair and Replacement Procedures Step 4 Perform the necessary adjustments Refer to Chapter 3 Tests and Adjustments S...

Page 85: ... View Descriptions and part numbers for the assemblies and parts in each group shown in the above illustration can be found at the following locations Front Panel Group on page 6 6 Measurement Group on page 6 8 Case Group on page 6 11 Miscellaneous parts and accessories not illustrated in any of these groups are listed under Miscellaneous Parts on page 6 13 ...

Page 86: ...927 60007 1 Cable A2 LCD to A5 System board W13 N9927 60005 1 Cable A2 LCD to A3 Front Panel Interface board W14 N9927 60009 1 Cable ribbon A3 Front Panel Interface board to A5 System board 1 1000 1485 1 LCD lens filter 2 N9927 60011 1 LCD Bracket assembly 3 0515 1946 13 Screw machine 90 deg flat head Torx T10 M3 0 x 6 mm 4 1990 3613 1 RPG Rotary Pulse Generator Includes cable W12 nut and washer 5...

Page 87: ...N9927 90003 6 7 FieldFox Analyzer Replaceable Parts Replaceable Parts Listings Figure 6 2 Front Panel Group Exploded View ...

Page 88: ...2 places 0515 0430 18 Screw 4 places 0515 1940 RF Top Panel Assembly N9927 60115 1 RF Top Panel Assembly Includes 1 Connector cover tethered cap for Type N connector qty 2 Connector cover for SMA connector W3 W4 1401 0245 qty 2 2 Screw 0515 2349 6 places 5 Overlay RF 6 Panel RF machined N9927 20013 7 Gasket RF Separately Replaceable Individual Parts and Assemblies A6 1150 8023 1 SOM Board 532 MHz ...

Page 89: ... connectors 11 N9912 20033 2 Insulator w pad 12 N9927 20064 2 EMI ring 14 0515 1946 2 Screw machine flat head Torx T10 M3 0 x 0 5 6 mm 15 1420 0905 1 Battery Lithium ion For Real Time Clock RTC backup 16 N9927 60113 1 25 System board top shield 1 Recommended to also order N9927 60133 System Top Shield Assembly Reference Designator Part Number Qty Description ...

Page 90: ...6 10 N9927 90003 Replaceable Parts FieldFox Analyzer Replaceable Parts Listings Figure 6 3 Measurement Group Exploded View ...

Page 91: ...es 1 Combination Nameplate Set N9927 80021 N9927 80022 N9927 80013 N9927 80014 N9927 80015 N9927 80016 1 1 1 1 1 1 Nameplate N9913A 4 GHz Nameplate N9914A 6 5 GHz Nameplate N9915A 9 GHz Nameplate N9916A 14 GHz Nameplate N9917A 18 GHz Nameplate N9918A 26 5 GHz VNA Nameplate Set N9927 80011 N9927 80012 N9927 80009 N9927 80010 1 1 1 1 Nameplate N9925A 9 GHz Nameplate N9926A 14 GHz Nameplate N9927A 18...

Page 92: ...ed View 13 0515 1940 4 Screw machine w patch lock pan head Torx T8 M2 5x0 45 6 mm 14 3110 0654 N9912 00003 1 Friction hinge Spacer 16 W1312 40068 1 Hinge cover 17 0515 2217 4 Screw machine button head Torx T8 M3 0 x 8 mm 18 N9927 60006 1 Cable assembly battery Reference Designator Part Number Qty Description ...

Page 93: ... washer pan head Torx T10 M3 x 0 5 35 mm qty 6 Rectangular Laser Address Label O STRIP RFI Hollow 0 060 in OD 0 020 in ID qty 1 Tape 1 4 inch x 1 inch for LCD ribbon cable qty 4 Gasket Blank Panel qty 1 Gasket I O Panel qty 1 Cover hinge N9927 60130 0515 1035 0515 1946 0515 1940 0515 0372 0515 2349 0515 2217 0515 5153 7121 8321 8160 1725 N9912 20043 N9912 40002 N9912 40003 W1312 40068 Ferrite Core...

Page 94: ...ng cord 5 foot length 9300 0980 Static control table mat and earth ground wire 9300 0797 ESD heel strap 9300 1126 Battery1 Battery Rechargeable Li Ion 11 1V 4 6A HR 1420 0908 1 Refer to Battery Disposal on page 1 7 for instructions on disposing of the old battery Table 6 1 Part Numbers for Miscellaneous Parts and Accessories Continued Description Model or Part Number ...

Page 95: ...N9927 90003 7 1 7 Repair and Replacement Procedures ...

Page 96: ...equence A step by step procedure for how to identify the faulty assembly replace it with a new one and re adjust your analyzer when done Page 7 4 Table of Removal and Replacement Procedures A table of removal and replacement procedures and the corresponding page number where they are located Page 7 5 Removal and Replacement Procedures The actual procedures for removing and replacing the major asse...

Page 97: ...contact Any interruption of the protective conductor inside or outside of the instrument will make the instrument dangerous Intentional interruption is prohibited CAUTION Always use the three prong AC power cord supplied with this product Failure to ensure adequate grounding by not using this cord may cause product damage Electrostatic Discharge ESD Protection CAUTION Many of the assemblies in thi...

Page 98: ...tep 1 Identify the faulty group Begin with Chapter 4 Troubleshooting Step 2 Order a replacement assembly Refer to Chapter 6 Replaceable Parts Step 3 Replace the faulty assembly and determine what adjustments are necessary Refer to Post Repair Procedures in this chapter Step 4 Perform the necessary adjustments Refer to Chapter 3 Tests and Adjustments Step 5 Perform the necessary performance tests R...

Page 99: ...age 7 8 A1 Keypad Page 7 17 RPG RPG part of front panel group Page 7 21 A2 LCD Page 7 23 A3 Front panel interface board Page 7 25 Measurement Group Measurement Group Assemblies as One Unit Page 7 27 RF Top Panel RF Top Panel Assembly Page 7 29 RF Connectors and Cables RF Connectors and Cables part of RF board Page 7 30 RTC battery Backup battery for real time clock Located on RTC board attached to...

Page 100: ... battery Replacing the Main Battery 1 Disconnect the power cord 2 Refer to Figure 7 1 Remove the battery compartment door by pushing in on the detent and then sliding the door downwards 3 Note the orientation of the battery for installation of the replacement 4 Remove the old battery and install the new battery in the battery compartment 5 Reinstall the battery compartment door by aligning it in p...

Page 101: ...N9927 90003 7 7 FieldFox Analyzer Repair and Replacement Procedures Removing and Replacing the Main Battery Figure 7 1 Replacing the Main Battery ...

Page 102: ... Isopropyl alcohol Use only in a well ventilated area Repair and Re assembly Kit Refer to Miscellaneous Parts on page 6 13 WARNING Before beginning any repair disconnect the power cord Replacing the Kickstand Hinge Cover and Hinge 1 Refer to Figure 7 2 Remove and discard the four screws item 1 from the kickstand hinge cover New screws are provided in the Repair and Re assembly Kit Figure 7 2 Repla...

Page 103: ...mbly Kit 3 To replace the hinge cover a Position the new hinge cover in place and install four new screws New screws are provided in the Repair and Re assembly Kit 4 To replace the hinge a Refer to Figure 7 3 Lift the kickstand assembly off of the rear case b Remove and discard the four hinge attachment screws item 2 c Place the new hinge in position and install with four new screws New screws are...

Page 104: ...ng and Replacing the Main Battery on page 7 6 2 Refer to Figure 7 4 Loosen the six screws item 3 that secure the RF top panel It should not be necessary to remove these screws just loosen them 3 Remove and discard the six screws item 4 that secure the rear case to the front case New screws are provided in the Repair and Re assembly Kit Figure 7 4 Separating the Front and Rear Cases 1 ...

Page 105: ...rts 4 Separate the cases and position the rear case to one side as shown in Figure 7 5 to allow access to the speaker side panel and strap handle 5 Remove the strap handle from the two dowel pins 6 Remove the speaker side panel from the groove in the front case Figure 7 5 Separating the Front and Rear Cases 2 ...

Page 106: ... and Replacing the Case Group Parts 7 Position the cases side by side as shown in Figure 7 6 8 Unplug the battery cable W15 from the A5 System board at the location indicated 9 The front and rear cases are now completely separated Figure 7 6 Separating the Front and Rear Cases 3 ...

Page 107: ... Separate the front and rear cases See Separating the Front and Rear Cases 2 Carefully remove the serial number label and the Windows CE label from the back of the old rear case and apply the labels to the new rear case 3 Remove the kickstand assembly from the old rear case and install it on the new rear case See Replacing the Kickstand Hinge Cover and Hinge 4 Remove the battery cable from the old...

Page 108: ...I O Side Panel Doors and Gasket 1 Separate the front and rear cases See Separating the Front and Rear Cases on page 7 10 2 Refer to Figure 7 8 Disconnect the A5 System board to A3 FPIB cable W14 at the A3 FPIB connector If replacing this cable disconnect both ends Figure 7 8 Removing All Measurement Group Assemblies as One Unit ...

Page 109: ...em board and A6 SOM board as one unit with the I O panel attached but do not disconnect cable W11 from between the A2 LCD and the A5 System board Refer to Removing and Replacing the Measurement Group Assemblies on page 7 27 4 Refer to Figure 7 9 Remove the two screws item 5 that secure the I O side panel to the A5 System board and remove the I O side panel Figure 7 9 Replacing the I O Side Panel ...

Page 110: ...the existing I O side panel install a new gasket in the groove around the perimeter of the panel If an old gasket must be removed use tweezers being careful not to damage the groove Start in the groove near the flat end of the side panel Be careful not to stretch or damage the gasket in any way Also make sure there is no slack in the gasket A new gasket is provided in the Repair and Re assembly Ki...

Page 111: ...ottom of the old front case and apply the label to the new front case 5 Refer to Figure 7 11 Choose the appropriate model number nameplate overlay for your analyzer remove the protective backing to expose the adhesive and adhere it in the location shown 6 Remove the dowel pins item 5 from the old front case and install them in the new case The other two dowel pins should already be installed in th...

Page 112: ...es the larger of the two gaskets provided If an old gasket must be removed carefully remove it with tweezers being careful not to damage the groove 2 If a new gasket has not been installed on the I O side panel install it at this time It will be necessary to remove the I O side panel from the A5 System board Refer to Replacing the I O Side Panel Doors and Gasket on page 7 14 for instructions 3 Ref...

Page 113: ...rts 5 Refer to Figure 7 13 Position the rear case on top of the front case and to one side as shown 6 Place the speaker side panel in the groove in the front case being careful not to damage the gasket 7 Position the strap handle over the two dowel pins as shown Figure 7 13 Combining the Front and Rear Cases 2 ...

Page 114: ... and the speaker side panel and that it is not in the path of the screw hole indicated 10 Firmly press the cases together being careful not to damage the gaskets 11 Install six new screws item 7 to secure the rear case to the front case These new screws are provided in the Repair and Re assembly Kit 12 Tighten the six screws item 8 that secure the RF top panel Figure 7 14 Combining the Front and R...

Page 115: ...cing the Measurement Group Assemblies on page 7 27 Replacing the RPG and RPG Knob 1 Refer to Figure 7 15 Remove the two hole plugs from the back side of the front case next to the RPG 2 To replace the RPG knob a Insert a round shaft such as a screwdriver shaft into the exposed holes and push the RPG knob off of the RPG shaft to the front side of the front case b Install a new knob by aligning the ...

Page 116: ...ach hole plug to lubricate it making it easier to install Use alcohol only in a well ventilated area View the hole plugs from the front to ensure that they are fully seated These hole plugs must be installed to maintain water tight integrity 5 Reinstall the RPG knob Refer to step 3 b of this procedure 6 Perform the steps under Post replacement Procedure on page 7 26 Figure 7 15 Replacing the RPG a...

Page 117: ...tion of the adhesive tape over the connector on the A2 LCD to A5 System board cable W11 Remove the tape and disconnect the cable c Remove the A2 LCD from the front case d Place the new A2 LCD in position and re connect the cables e Place a strip of adhesive tape over the LCD connector end of the A2 LCD to A5 System board cable W11 in the same location as the old strip and as shown A new strip of a...

Page 118: ...7 24 N9927 90003 Repair and Replacement Procedures FieldFox Analyzer Removing and Replacing the Front Panel Group Assemblies Figure 7 16 Replacing the A2 LCD the LCD Shield and LCD Cables ...

Page 119: ...Remove the nine screws item 3 that secure the A3 FPIB to the front case 6 Push the nine rubber nubs through the A3 FPIB to release the A1 keypad The A1 keypad is permanently attached to the front case and must remain 7 Position the new A3 FPIB in the front case over the A1 keypad and using needle nose pliers pull the nine rubber nubs on the A1 keypad through the holes in the A3 FPIB Make sure that...

Page 120: ...Panel Interface Board Post replacement Procedure 1 Reinstall the measurement group assemblies RF top panel A4 RF board A5 System board and A6 SOM board as one unit with the I O panel attached Refer to Removing and Replacing the Measurement Group Assemblies on page 7 27 2 Combine the front and rear cases Refer to Combining the Front and Rear Cases on page 7 18 ...

Page 121: ...ont and rear cases Refer to Separating the Front and Rear Cases on page 7 10 2 Refer to Figure 7 18 Disconnect the A5 System board to A3 FPIB cable W14 at the A3 FPIB connector using the small flat blade screwdriver If replacing this cable disconnect both ends 3 Lift the measurement group assemblies out of the front case and position them to the side of the front case as shown 4 Disconnect the A2 ...

Page 122: ...7 28 N9927 90003 Repair and Replacement Procedures FieldFox Analyzer Removing and Replacing the Measurement Group Assemblies Figure 7 18 Removing All Measurement Group Assemblies as One Unit ...

Page 123: ...and lift the RF top panel over the type N RF connectors 6 Position the new RF top panel over the type N RF connectors and loosely reinstall the six screws item 1 Do not tighten these screws at this time they will be tightened after the front and rear cases have been combined 7 Connect cable W3 and W4 to the A5 System board connectors There should be an audible click when the connector is fully in ...

Page 124: ...nput cable can now be replaced by disconnecting the other end of the cable and removing it When installing the new cable do not tighten either of the cable connector nuts until both of them have been installed finger tight 8 Remove the RFI O ring 9 Remove the old insulator and install a new one 10 Position the new type N RF connector in the RF bottom shield making sure that it aligns with the cabl...

Page 125: ...ry 1 Perform the steps under Pre replacement Procedure on page 7 21 2 Refer to Figure 7 22 Disconnect W17 from the System board 3 Remove the two screws item 2 that attach the RTC board item 1 to the System board shield 4 Refer to Figure 7 21 The RTC battery slips into the carrier on the RTC board with the positive polarity side facing up 5 Place the RTC board onto the System board shield with the ...

Page 126: ...s are provided in the Repair and Re assembly Kit c Refer to Figure 7 23 Remove the four screws item 2 that secure the A6 SOM board item 1 to the A5 System board Discard these screws new ones are provided in the Repair and Re assembly Kit d Unplug the A6 SOM board from the A5 System board e Plug the new A6 SOM board into the A5 System board f Install four new screws item 2 from the Repair and Re as...

Page 127: ...N9927 90003 7 33 FieldFox Analyzer Repair and Replacement Procedures Removing and Replacing the Measurement Group Assemblies Figure 7 22 Remove System Board Shield ...

Page 128: ...7 34 N9927 90003 Repair and Replacement Procedures FieldFox Analyzer Removing and Replacing the Measurement Group Assemblies Figure 7 23 Replacing the A6 SOM Board ...

Page 129: ...tem board lift it up from the RF bottom shield and unplug it from the A4 RF board connector Discard the screws new ones are provided in the Repair and Re assembly Kit 10 Refer to Figure 7 25 Plug in the new A5 System board to the A4 RF board over the new gasket and aligned with the three dowel pins in the RF bottom shield Make sure the bullets are straight up when connecting the System and RF boar...

Page 130: ...7 36 N9927 90003 Repair and Replacement Procedures FieldFox Analyzer Removing and Replacing the Measurement Group Assemblies Figure 7 24 Replacing the A5 System Board ...

Page 131: ...N9927 90003 7 37 FieldFox Analyzer Repair and Replacement Procedures Removing and Replacing the Measurement Group Assemblies Figure 7 25 Connecting the System Board and the RF Board ...

Page 132: ...7 38 N9927 90003 Repair and Replacement Procedures FieldFox Analyzer Removing and Replacing the Measurement Group Assemblies Figure 7 26 System Shield Torque Pattern ...

Page 133: ... 2 attaching the RF board shield to the RF board item 1 5 Refer to Figure 7 28 The RF board can now be removed from the measurement assembly 6 Refer to Figure 7 25 Re connect the A4 RF board to the A5 System board 7 Refer to Figure 7 29 Replace the RF board shield by replacing the twenty six shield screws Torque these nineteen shield screws plus the two System board screws 13 and 21 in the sequenc...

Page 134: ...7 40 N9927 90003 Repair and Replacement Procedures FieldFox Analyzer Removing and Replacing the Measurement Group Assemblies Figure 7 28 RF Board Separation ...

Page 135: ...N9927 90003 7 41 FieldFox Analyzer Repair and Replacement Procedures Removing and Replacing the Measurement Group Assemblies Figure 7 29 RF Shield Torque Pattern ...

Page 136: ...ve tape over the connector to secure it This strip of adhesive tape is provided in the Repair and Re assembly Kit If necessary refer to Replacing the A2 LCD the LCD Shield and LCD Cables on page 7 23 4 Position the measurement group assemblies on top of the front case and align the I O side panel in the groove in the front case being careful not to damage the gasket 5 Position tuck the LCD to Syst...

Page 137: ...N9927 90003 7 43 FieldFox Analyzer Repair and Replacement Procedures Removing and Replacing the Measurement Group Assemblies Figure 7 30 Replacing All Measurement Group Assemblies as One Unit ...

Page 138: ... applicable Error Terms test if applicable PORT 2 connector or associated cable W2 replaced or disturbed Error Terms adjustment if applicable Error Terms test if applicable Absolute Amplitude Accuracy Test Total Abs Amp Accy LF Test Total Abs Amp Accy HF Test Front case including A1 keypad None needed Manual check of keyboard A2 LCD None needed Manual check of LCD A3 front panel interface board No...

Page 139: ...D card must be used when the flash memory on the A6 SOM board is new or when the A6 SOM board memory has become corrupted Instructions for creating and using the SD card are available at the SD card for installing firmware link at agilent com find fieldfox2 Compare Serial Numbers Compare the serial number stored in the instrument memory with the serial number tag on the back of the instrument To a...

Page 140: ...7 46 N9927 90003 Repair and Replacement Procedures FieldFox Analyzer Post Repair Procedures ...

Page 141: ...N9927 90003 8 1 8 General Purpose Maintenance and Service Procedures ...

Page 142: ...your analyzer view the current firmware revision view the error log view temperature readings erase user data Page 8 3 Options How to view the currently installed options re install options after repair Page 8 5 Firmware Upgrades How to check your analyzer s current firmware revision where to locate additional information about firmware upgrades Page 8 6 Miscellaneous Service and Maintenance Infor...

Page 143: ... System Information screen includes the following information Model Number instrument model number Serial Number instrument serial number Firmware Release version of installed firmware Network Identity computer name and current IP address RF Serial Number serial number of RF PCA A4 SB Serial Number serial number of System Board PCA A5 FP Serial Number serial number of Front Panel PCA A3 UserData E...

Page 144: ...ress Internal Temperatures See the Temperature Related Information section of Chapter 5 for details Erase User Data Utility Press System 7 Press Service Diagnostics Press Advanced Press Erase User Data Press Confirm Erase The UserData memory portion is erased then the instrument restarts See the Firmware Related Information section of Chapter 5 for details on the Erase User Data utility ...

Page 145: ...eldFox repair Model number and serial number of the instrument Maximum frequency of the instrument from the label above the display A list of options from the serial number label on the back of the instrument A brief description of why options need to be re installed This information will help Agilent identify recurring problems that may need special attention 2 Within two working days you will re...

Page 146: ...are Release line For information on upgrading FieldFox firmware go to www agilent com find fieldfox2 If the firmware upgrade process is interrupted memory contents in the instrument may become corrupted If a problem is suspected consider doing a fresh installation of the firmware Follow the process under Install Firmware from SD Card near the end of Chapter 7 See the Firmware Related Information s...

Page 147: ...ion with 99 5 IPA isopropyl alcohol or a high quality window cleaning solution Technique Do not rub back and forth with a polishing motion Use a single swipe from the soiled location to the nearest edge of the display Battery Maintenance See the Working with the Lithium Ion Battery section of the FieldFox User s Guide for information on the removable battery In particular see Built In Battery Gaug...

Page 148: ...8 8 N9927 90003 General Purpose Maintenance and Service Procedures FieldFox Analyzer Miscellaneous Service and Maintenance ...

Page 149: ...N9927 90003 Appendix 1 Appendix A ...

Page 150: ...n passive devices to the accuracy of the published FieldFox S parameter specifications After a full 2 port calibration of FieldFox using either the QSOLT or SOLR method a variety of standards from an Agilent Verification Kit are measured and the results are compared with factory data of those standards The uncertainty charts in this appendix can be used to check that the verification standards are...

Page 151: ...oise compression and dynamic accuracy Coverage factor of x2 applied to uncertainties Full 2 port calibration 85054D Type N m calibration kit spec Transmission uncertainty S21 S12 Reflection uncertainty S11 S22 Corrected Performance 0 5 GHz 0 5 to 2 GHz 2 to 8 GHz 8 to 18 GHz Directivity 40 dB 40 dB 36 dB 34 dB Source Match 38 dB 33 dB 33 dB 27 dB Load Match 37 dB 35 dB 32 dB 27 dB Reflection Track...

Page 152: ...ise compression and dynamic accuracy Coverage factor of x2 applied to uncertainties Full 2 port calibration 85052D 3 5 mm calibration kit spec Transmission uncertainty S21 S12 Reflection uncertainty S11 S22 Corrected Performance 0 5 GHz 0 5 to 8 GHz 8 to 20 GHz 20 to 26 5 GHz Directivity 42 dB 38 dB 36 dB 30 dB Source Match 37 dB 31 dB 28 dB 25 dB Load Match 38 dB 33 dB 29 dB 24 dB Reflection Trac...

Page 153: ...E mark 1 6 check operational 3 7 checklist before return to customer 3 6 checks and procedures manual 7 45 commercial calibration Option UK6 2 8 compare instrument serial numbers 7 45 connector care principles of 3 4 quick reference 3 4 connectors care of 3 4 contacting Agilent 2 9 CPU board operation 5 17 removal and replacement 7 27 CSA mark 1 6 D display illustrated 6 5 operation 5 6 parts list...

Page 154: ...eable parts 6 3 P part numbers documentation 6 13 repair and reassembly kit 6 13 in front panel assembly 6 5 miscellaneous analyzer 6 13 supplies ESD 6 14 tools service 6 13 parts in front panel illustrated 6 5 part numbers 6 5 miscellaneous part numbers 6 13 replaceable listing of 6 5 ordering information 6 3 performance tests N7841A 3 9 post repair procedures 7 44 power control 5 18 management 5...

Page 155: ...ent operation 5 18 SOM board operation 5 17 standards compliant calibration ANSI Z540 Option A6J 2 8 ISO 17025 Option 1A7 2 8 strap handle removal and replacement 7 8 supplies ESD part numbers 6 14 support contacting Agilent 2 9 options 2 8 system board operation 5 13 T temperature battery pack 5 25 related information 5 25 screen 5 25 test equipment service 3 5 tests 3 10 performance N7841A 3 9 t...

Page 156: ...Index 4 N9927 90003 Index ...

Search results

Summary of Contents for FieldFox MW N9913A

Reviews:

Related manuals for FieldFox MW N9913A

Brands by name

Popular brands

Agilent Technologies FieldFox MW N9913A, Service Manual

Search results

Summary of Contents for FieldFox MW N9913A

Reviews:

Related manuals for FieldFox MW N9913A

Brands by name

Popular brands