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HP 85108, System Manual

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a2

IF

Signal

P

ath

Check

Step

Connections/setup

Conclusion

(if

the

problem

is

corrected)

1

Mo

v

e

W46

cable

on

A13J5

to

A13J6.

replace

A13

IF

Mixer

b oard

2

Mo

v

e

W45

cable

on

A2J7

to

A2J5.

Redene

a1

to:

DRIVE:

P

ort

2.

replace

W46

(A13J5

to

A2J5)

3

Redene

a1

to:

DRIVE:

P

ort

1.

If

a1

IF

signal

is

ok

a

y

.

replace

A2

pulse

IF

Mux

b oard

4

Return

to

the

pulsed-RF

troublesho oting

o

w

c

hart.

Procedure

4:

A3/A4

Pulse

Detector

IF

P

ath

Check

Prerequisite

for

using

this

c

hec

k:

1.

Either

b oth

reference

(a1

&

a2)

or

b oth

test

(b1

&

b2)

pulsed-RF

IF

signal

paths

lo

ok

bad.

2.

Less

than

three

IF

paths

are

bad.

In

the

pro cedures

b elow,

alwa

ys

return

an

y

mov

ed

cables

to

their

original

connections

b efore

pro ceeding

to

the

next

step.

If

the

connections/setup

correct

the

problem,

carry

out

the

instructions

in

the

conclusion

column.

If

the

problem

isn't

corrected,

go

on

to

the

next

step.

6-18

System

Service

and

Troubleshooting

Summary of Contents for 85108

Page 1: ...System Manual HP 85108A Pulsed RF Network Analyzer System ABCDE HP Part No 85108 90023 Printed in USA March 1995 ...

Page 2: ...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 1991 Hewlett Packard Company All Rights Reserved Reproduction adaptation or translati...

Page 3: ...ther country HP warrants that its software and rmware designated by HP for use with an instrument will execute its programming instructions when properly installed on that instrument HP does not warrant that the operation of the instrument or software or rmware will be uninterrupted or error free LIMITATIONS OF WARRANTY The foregoing warranty shall not apply to defects resulting from improper main...

Page 4: ......

Page 5: ...on 010 1 4 Warranty 1 5 Upgrade Paths 1 5 HP 8510C Network Analyzer 1 5 HP 8510B Network Analyzer 1 5 2 System Installation Introduction 2 1 System Arrival 2 1 Receiving Checklist 2 2 Site Preparation 2 3 Environmental Requirements 2 3 Accuracy Enhanced Measurement Requirements 2 4 Power Requirements 2 4 System Heating and Cooling 2 4 System Voltages 2 5 Weights and Dimensions 2 6 Anti Static Prec...

Page 6: ...RF Applications 3 23 Pulsed RF Timing Information 3 23 Network Analyzer Measurement Cycle 3 23 Measurement Cycle Time 3 24 Pulse Repetition Period and Duty Cycle Considerations 3 24 External Trigger and Stop Sweep Signals 3 25 Using External Triggering and Pulse Modulation 3 26 Connect the Pulse Generator 3 26 High Power Measurements 3 29 Connecting External Signal Conditioning 3 30 Example High P...

Page 7: ... Troubleshooting Introduction 6 1 Getting Help 6 1 Troubleshooting 6 1 Troubleshooting Strategy 6 1 Documentation Required 6 2 1 Note the Symptoms of the Failure 6 2 2 Check System Setup 6 2 Procedure 6 2 HP 8360 Series Source Check Software Revision Language and HP IB Address 6 3 Front Panel Keys Method 6 3 Rear Panel Switch Method 6 4 HP 8340 41 Source HP IB Address Check 6 4 Procedure 6 4 3 Use...

Page 8: ...Test 6 16 Equipment 6 16 Service Adapter Procedure 6 16 Conclusions 6 16 Procedure 2 A2 Pulse IF Mux Test IF Path Check 6 16 Procedure 3 A2 Pulse IF Mux Reference IF Path Check 6 17 Procedure 4 A3 A4 Pulse Detector IF Path Check 6 18 Procedure 5 A6 Clock 20 MHz Output Check 6 19 7 Replaceable Parts Introduction 7 1 Ordering Information 7 1 To Order Parts fast 7 1 A Glossary of Pulsed RF System Ter...

Page 9: ...C Loading the System Con guration Disk Introduction C 1 Procedure C 1 Index Contents 5 ...

Page 10: ... State 1 3 5 3 4 Instrument State 2 3 6 3 5 Instrument State 3 3 7 3 6 Instrument State 4 3 8 3 7 Instrument State 5 3 9 3 8 Instrument State 6 3 10 3 9 Instrument State 7 3 11 3 10 Instrument State 8 3 12 3 11 Pulsed RF S Parameters versus Frequency Frequency Domain Point in Pulse 3 13 3 12 Pulsed RF S Parameters versus Time Pulse Pro le Domain Measurement Internal Pulse Output and Internal Measu...

Page 11: ...Adjusted Pulse Detector Display Trace 5 5 6 1 HP 8360 Series Source Rear Panel Switches 6 4 6 2 Simpli ed a1 and b1 Pulsed RF Signal Paths 6 9 6 3 a1 and a2 Signal Paths 6 11 6 4 b1 and b2 Signal Paths 6 12 6 5 HP 85102 Pulsed RF Signal Path 6 14 6 6 Pulsed RF IF Path Troubleshooting Flowchart 6 15 6 7 HP 85108 System Block Diagram 6 21 6 8 IF Detector with Pulse Option Block Diagram 1 of 2 6 23 6...

Page 12: ...ystem HP IB Addresses 2 17 4 1 General Characteristics 4 11 6 1 System Setup Check Table 6 3 6 2 Instrument Power On Sequence 6 6 7 1 HP 85108 Replaceable Parts 7 3 7 2 HP 85108 Replaceable Parts 7 6 B 1 HP IB Addresses Speci c to Pulsed RF Systems B 1 B 2 Hardware States Speci c to the Pulsed RF System B 2 B 3 Instrument States Speci c to the Pulsed RF System B 2 B 4 Multiple Source Settings for ...

Page 13: ...Use This Manual Use this manual for installation operation calibration performance veri cation and troubleshooting of the pulsed RF network analyzer system consult the manuals of the individual instruments and accessories in the system when necessary for reference This manual contains the following sections System and Documentation Overview Includes an overview of the pulsed RF network analyzer sy...

Page 14: ...are also included When the faulty instrument is identi ed refer to its manual for further troubleshooting information Replaceable Parts Includes a list of replaceable parts that pertain to the pused RF portion of the system Refer to the replaceable parts section of the individual instrument for a complete listing of replaceable parts Appendix Includes a glossary of pulsed RF terms information rega...

Page 15: ... function of time with an equivalent bandwidth of 1 5 Mhz this allows the evaluation of the dynamic pulsed RF characteristics for pulse widths down to 1 second You can con gure a pulsed RF system using your existing HP 8510 network analyzer system by adding pulsed RF capability option 008 to your network analyzer Refer to the paragraph titled Upgrade Paths in this chapter for more information Syst...

Page 16: ...nual under the heading Serial Numbers Figure 1 2 Typical Serial Number Label HP 85108 Pulsed RF System Options The following options are available with the HP 85108 system Option 001 This test set option add IF switching capability to allow a total of four test sets to be connected to the HP 8510 at the same time The test set in use is selectrd from the HP 8510 front panel The 20 Mhz IF signal is ...

Page 17: ...is valid only if the upgrad package is installed by an HP Customer Engineer Installation of the upgrade kits does not change an existing service contract in any way Upgrade Paths HP 8510C Network Analyzer To add pulsed RF capability to your HP 8510C order the HP 85111B upgrade kit HP 8510B Network Analyzer To add pulsed RF capability to your HP 8510B order the HP 85111A upgrade kit System and Docu...

Page 18: ......

Page 19: ...ents assembled and cabled in the system cabinet Keep the shipping containers in one area to help verify the receipt of all components ordered Inspect all shipping containers Keep the carton and packaging material until the entire shipment has been veri ed for completeness and the system has been checked mechanically and electrically Check all equipment received against the receiving checklist on t...

Page 20: ...Synthesized Sweeper with options 001 003 004 and 008 83620 90007 HP 83624A Synthesized Sweeper with options 003 004 and 008 83620 90007 Software HP 8510 Speci cations and Performance Veri cation Software Revision A 03 01 or higher 08510 10033 HP 85108 System Con guration Disk 85108 10007 Table 2 2 HP 85108 Option 010 Adds Time Domain to the HP 8510 Instrument Manual Part Number HP 85108 Standard S...

Page 21: ...irements before installing the system Environmental Requirements The environmental requirements of the HP 85108 system are listed in Table 2 3 Notice that these characteristics are the same as those for the HP 8510C network analyzer Table 2 3 HP 85108 Environmental Requirements Temperature 5 C to 40 C 41 F to 104 F Relative Humidity 5 to 95 at 40 C or less non condensing Altitude Up to 4600 meters...

Page 22: ... Temp 6 1 C Power Requirements Install the required AC power at all necessary locations Place air conditioning equipment or other motor operated equipment on a di erent AC line than that used for the system Refer to Table 2 4 for a list of the maximum VA power ratings of the HP instruments used in the HP 85108 system Three wire power cables must be used with all instruments These cables provide th...

Page 23: ...Hard Disk 65 222 HP Laser Jet II 170 to 800 580 to 2 270 HP PaintJet 20 68 HP 7550A Plotter 100 340 Your System s Total 2 1 Values are based on 120 Vac supplied to each instrument at 60 Hz 2 To convert the total BTU hour value to tons divide the total BTU hour value by 12 000 System Voltages All instruments in the HP 85108 system must be set to the local voltage All system instruments are set to 1...

Page 24: ...ow Height 160 cm 63 inches Width 60 cm 23 6 inches Depth 90 cm 31 4 inches Anti Static Precautions CAUTION Handle only at static safe workstations Beware of damage from electro static discharge ESD The input connectors on the test set test ports or cables or adapters connected to the test ports are very sensitive to ESD Use a grounded wrist strap when attaching devices to the input connectors Unpa...

Page 25: ...Figure 2 2 Unpacking the HP 85108 System Cabinet in Air Carrier Style Packaging 1 of 4 System Installation 2 7 ...

Page 26: ...Figure 2 2 Unpacking the HP 85108 System Cabinet in Air Carrier Style Packaging 2 of 4 2 8 System Installation ...

Page 27: ...Figure 2 2 Unpacking the HP 85108 System Cabinet in Air Carrier Style Packaging 3 of 4 System Installation 2 9 ...

Page 28: ...Figure 2 2 Unpacking the HP 85108 System Cabinet in Air Carrier Style Packaging 4 of 4 2 10 System Installation ...

Page 29: ...twork Analyzer 1 HP 85110 S parameter Test Set 1 HP source RF select one from the table below 1 HP source LO select one from the table below Table 2 5 Possible RF LO Sources for Pulsed RF Systems RF LO LO HP 8349B Microwave amp1 HP 8340B HP 83623A HP 8340B HP 8341B HP 83624A HP 8341B HP 83620A HP 83620A HP 83622A HP 83621A HP 83623A HP 83622A HP 83624A HP 83630A HP 83630A HP 83631A HP 83640A HP 83...

Page 30: ...ect your peripheral equipment to this bus only if you want this equipment to be controlled by the computer The HP 8510 System Bus The HP 8510 must be able to send HP IB commands to the other instruments in the system at any time without waiting for permission from the computer To facilitate this a special HP IB bus was created called the HP 8510 System Bus Connect your peripheral equipment to this...

Page 31: ...ristics earlier in this section for the maximum VA ratings for this outlet on your system The HP 85108 Installed In a Different Cabinet Hewlett Packard strongly recommends that the HP 85108 system cabinet be used with the HP 85108 pulsed RF system HP is not obligated to support user con gured pulsed RF rack systems other than the HP 85108 rack mounted system The customer takes full responsibility ...

Page 32: ...Figure 2 3 HP 85108 System Cabling Diagram rack mounted system 2 14 System Installation ...

Page 33: ...Figure 2 4 HP 85108 System Cabling Diagram benchtop configuration without amplifier System Installation 2 15 ...

Page 34: ...Figure 2 5 HP 85108 System Cabling Diagram benchtop configuration with amplifier 2 16 System Installation ...

Page 35: ... to each instrument in your system to check each address Press NNNNNNNNNNNNNN MORE to show additional instrument choices Compare the addresses on the network analyzer display with the addresses listed in Table 2 6 To change an address press the softkey corresponding to the desired instrument then enter the correct address 4n5 4n5 4x15 Table 2 6 HP 85108 System HP IB Addresses Instrument HP IB Addr...

Page 36: ...P 8510B based systems must have rmware revision HP8510B 05 11 or greater If your HP 8510B has rmware revision HP 8510B 06 00 or greater and you are using an HP 836xx source you must upgrade the rmware in each HP 836xx source you are using must be March 08 1991 or higher Order HP part number 08360 60167 for the most current HP 836xx source rmware upgrade Figure 2 6 HP 85108 Initial Trace 2 18 Syste...

Page 37: ...ly known repeatable time during the pulse This extends the HP 8510 applications into two major areas tests in which the stimulus signal to the device is pulsed and tests of devices which accept a CW input and produce a pulsed output A simpli ed block diagram of the system is shown in Figure 3 1 One synthesizer provides the test signal stimulus to the RF input of the test set and the other provides...

Page 38: ...ller can initiate a measurement cycle When control of the pulse repetition period and duty cycle is required the HP 8510 can use the trigger input to synchronize with the internal or an external pulse modulator The HP 8510 Stop Sweep output can be used as a gating signal to tell when the analyzer is ready for the next measurement The measurement is made with 100 nanosecond resolution and about 200...

Page 39: ...t sets can be equipped to include Option 001 IF Switching for Multiple Test Sets so a system can be equipped for a wide range of applications by including up to four coaxial test sets and a millimeter wave test set Figure 3 2 HP 85110A S Parameter Test Set Signal Flow Controlling Multiple Test Sets Option 001 for the HP 851X series and 85110 test sets allows an HP 8510 to alternately control up to...

Page 40: ...nstalled for the rst time and when any part of the system is repaired If any of the operational tests fail refer to the System Service and Troubleshooting chapter for more information The instrument and hardware states of each operational test are contained on the HP 85108 System Con guration disk The con gurations for these operator s tests are located in instrument states 1 through 8 of your net...

Page 41: ...pare the network analyzer display to Figure 3 3 Figure 3 3 Instrument State 1 Check these items Domain Pulse pro le Display Mode Dual channel split Wide BW Detectors On indicated by the W to the left of the graticule Channel 1 log mag USER 1 a1 Channel 2 log mag USER 3 a2 3 Repeat step 2 for the remaining instrument states and compare the results with Figure 3 4 through Figure 3 10 Operation 3 5 ...

Page 42: ...ment State 2 Check these items Domain Frequency Display Mode Dual channel split Wide BW Detectors On indicated by the W to the left of the graticule Channel 1 log mag USER 1 a1 Channel 2 log mag USER 3 a2 3 6 Operation ...

Page 43: ...ment State 3 Check these items Domain Frequency Display Mode Dual channel split Wide BW Detectors On indicated by the W to the left of the graticule Channel 1 log mag USER 4 b1 Channel 2 log mag USER 2 b2 Operation 3 7 ...

Page 44: ...e 4 Check these items Domain Frequency Display Mode Four parameter split Normal BW Detectors On the W to the left of the graticule should disappear Channel 1 log mag S11 S21 S12 S22 Channel 2 phase S11 S21 S12 S22 3 8 Operation ...

Page 45: ...ate 5 Check these items Domain Pulse pro le Display Mode Four parameter split Wide BW Detectors On indicated by the W to the left of the graticule Channel 1 log mag S11 S21 S12 S22 Channel 2 phase S11 S21 S12 S22 Operation 3 9 ...

Page 46: ...Instrument State 6 Check these items Domain Pulse pro le Display Mode Single parameter Wide BW Detectors On indicated by the W to the left of the graticule Channel 1 log mag S11 Channel 2 phase S11 3 10 Operation ...

Page 47: ...tate 7 Check these items Domain Frequency Display Mode Four parameter split Wide BW Detectors On indicated by the W to the left of the graticule Channel 1 log mag S11 S21 S12 S22 Channel 2 phase S11 S21 S12 S22 Operation 3 11 ...

Page 48: ...F measurements in the frequency domain is accomplished by synchronizing the measurement process with the pulse so that the measurement is made at a single user speci ed time during the pulse At each frequency the sources are tuned the RF is turned on then the measurement is made after a certain delay Figure 3 11 shows an example of this frequency domain point in pulse measurement using the interna...

Page 49: ...3 12 for an example of this process Time zero is the leading edge of the internally generated pulse output waveform or the falling edge of the externally generated measurement trigger waveform The network analyzer automatically controls the time increment between samples called the measurement resolution period using an algorithm that depends upon the greater of the user speci ed pulse width or st...

Page 50: ...al Measurement Trigger Making Pulsed RF Measurements Frequency Domain Point in Pulse Calibration Measurement calibration for frequency domain point in pulse is accomplished in exactly the same way as for the standard HP 8510 network analyzer 1 Press 4DOMAIN5 NNNNNNNNNNNNNNNNNNNNNNNNNNNNN FREQUENCY to select the frequency domain 2 If the W annotation is not displayed select the wideband detector by...

Page 51: ...NNNNNNNNNNNNNNNNNNNNNNN PULSE WIDTH Use the knob step keys or numeric entry to set the desired pulse width 3 Set Duty Cycle Limit After factory preset the duty cycle limit is set to 10 This means that the maximum duty cycle will never be allowed to be greater than 10 percent regardless of the pulse width To set the duty cycle limit press NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN DUTY CYCLE on the Pulse Con...

Page 52: ...r calibration using the Frequency List feature Select the best one for your application The pulse pro le domain calibration procedure is an easy way to familiarize yourself with the pulse pro le domain and for general purpose measurements using simple response only correction Use the frequency list technique when more than one pulse pro le frequency and 1 Port or 2 Port correction is required Give...

Page 53: ...t a problem for simple response only calibrations but when accuracy considerations require the use of 1 Port or 2 Port calibrations connecting the necessary sequence of standards repeatedly can be tedious As an alternative the frequency list feature allows the standards to be connected once for all pulse pro le frequencies Perform the calibration as follows 1 Press 4DOMAIN5 NNNNNNNNNNNNNNNNNNNNNNN...

Page 54: ...List Display During Measurement Calibration 5 Press 4DOMAIN5 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PULSE PROFILE 6 Press 4STIMULUS MENU5 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN FREQUENCY LIST NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN SINGLE SEGMENT The last selected segment will be active 3 18 Operation ...

Page 55: ...ys On during measurement of the standard This ensures that the calibration data at every point is with respect to the On portion of the pulse If external pulse modulation is used it is necessary that the RF is On during measurement of the calibration standard Measurement After calibration rst view the response of one of the calibration standards Figure 3 16 is typical the trace is at at 0 dB when ...

Page 56: ...eys to set a di erent pulse width Press 4SYSTEM5 NNNNNNNNNNNNNN MORE NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PULSE CONFIG NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PULSE WIDTH Use the knob step keys or numeric entry to set the desired pulse width 3 Set Duty Cycle Limit After instrument preset the duty cycle limit is set to 10 This means that the maximum duty cycle will never be allowed to be greater than...

Page 57: ...e change in the Active Entry area If necessary adjust the resolution period to the value required for your measurement by changing the stop time pulse width and number of points 6 Connect the Device under Test With the pulse width set connect the device under test Figure 3 17 shows the response of the device to the pulsed RF stimulus at the current frequency Figure 3 17 Minimum Time Span Resolutio...

Page 58: ... PULSE PROFILE 4CAL5 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN CORRECTION ON NNNNNNNNNNNNNNNNNNNNNNNNNNNNN CAL SET n This sequence makes certain that the cal set applies to the domain in which it was created Another method is to save a number of instrument states each with the appropriate domain and cal set then simply recall the desired instrument state If a cal set created in the pulse pro le do...

Page 59: ...easurement Cycle Each measurement cycle is initiated by the falling edge of the TTL signal at the rear panel external Trigger Input or the internal 8510 logic depending upon whether external or internal triggering is selected At the appropriate time after the trigger the measurement is made If averaging is turned On but not completed the process waits for the next trigger to make the next measurem...

Page 60: ...set to the inactive level during the sweep retrace 3 Pulse Output is set to the active level for less than 30 microseconds immediately prior to the beginning of the sweep for the automatic periodic IF calibration sequence 4 Pulse Output remains at the inactive level under all conditions when External Triggering is selected The automatic periodic IF calibration sequence is transparent to the operat...

Page 61: ...ercent This is avoided by setting the duty cycle function to the maximum value allowed in the measurement When the combination of the pulse width and the duty cycle limit approaches the measurement cycle time the pulse o part of the measurement cycle time is increased to satisfy the duty cycle limit If you are viewing this with an oscilloscope notice how the measurement cycle time varies according...

Page 62: ... to accept the next trigger The time period that stop sweep remains busy depends upon the next measurement function to be performed Pulse output is turned O for external triggering As for internal triggering the pulse pro le measurement resolution period is set by the larger of pulse width and pulse pro le domain stop time Using External Triggering and Pulse Modulation In applications where it is ...

Page 63: ...ls on the sweep in line could a ect triggering Figure 3 22 External Control of PRP and Duty Cycle Synchronization is assured because time equals zero seconds for each measurement cycle is de ned as the rst falling edge of the trigger input after stop sweep is ready high Figure 3 22b shows connection of an external pulse modulator instead of the internal modulator in the RF source Figure 3 23 shows...

Page 64: ...e frequency domain response with the trigger delay set to measure during the On time of the pulse One method used to set the trigger delay to an appropriate value is 1 Press 4DOMAIN5 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PULSE PROFILE then set appropriate Start and Stop times 2 Press 4MARKER5 then move the marker to the point on the pulse you want the frequency domain measurement to be made 3 ...

Page 65: ...maximum IF signal level as measured by the user parameters is 010 dBm Higher signal levels cause errors due to compression and lower signal levels produce greater uncertainty due to noise Caution Components in the test set will be be damaged at certain signal levels To avoid damage observe the following operating precautions Use the PORT 1 and PORT 2 attenuators Stimulus Power menu to protect the ...

Page 66: ...pplied at either HIGH POWER IN connector or to either of the front panel PORT 1 and PORT 2 connectors is 43 dBm Example High Power Measurements To set signal levels in the test set estimate the input and output power levels of the device under test When the test set is con gured to handle these levels the operating device is connected and the power estimates are veri ed by measuring the user param...

Page 67: ... message no longer appears An isolator providing about 30 dB of isolation between Port 2 and the switch is the best choice because it can preserve the dynamic range for reverse measurements Better performance for the reverse measurements will be obtained because the isolator will minimize the insertion loss from the reverse pole of the switch to Port 2 and to a2 Note The network analyzer can not s...

Page 68: ...ected by installing an attenuator or isolator in the rear panel PORT 2 links to reduce the signal level at the reverse pole of the switch to below 20 dBm The coupler is used in the transmission return signal path because it provides the necessary loss and will probably provide a more stable signal path than a high power attenuator that would otherwise be required A high power termination is requir...

Page 69: ...an 010 dBm at any point in the trace increase the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN ATTENUATOR PORT 2 value In some applications it may be necessary to measure the signal at b2 with the signal applied to Port 2 For this measurement 6 Press NNNNNNNNNNNNNNNNNNNNNNNNNNNNN USER 2 b2 7 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN REDEFINE PARAMETER NNNNNNNNNNNNNNNNN D...

Page 70: ...o sets the marker reading by the di erence in the Port 1 and Port 2 values Store Trace Memories The main frequency response e ects of changing the attenuators can be compensated for by using the HP 8510 trace memories and trace mathematics as follows 1 Connect the thru used for calibration Set the port attenuators to the value used for measurement of the device Recheck the user parameter levels th...

Page 71: ...ly 1 Very low signal levels of the S22 and S12 measurement will probably reduce the accuracy of the S11 and S21 measurements Using 2 Port correction the values of all four parameters are used to nd the corrected value for the displayed parameter If for example the reverse parameters are not representative of their actual values due to insu cient signal levels then their contribution to the accurac...

Page 72: ...menu in the S Parameter Test Set Calibration Error Models section General Calibration and Measurement Sequence Specify device input output requirements Con gure test set for these levels plus guardband Connect operating device and verify levels Adjust levels for best dynamic range Perform measurement calibration Measure operating device S parameters General Calibration and Measurement Sequence Usi...

Page 73: ... 90282 for an in depth explanation of the procedure This procedure documents the veri cation with the system in pulsed RF mode wide BW detectors Any changes to the setup for a nonpulsed RF veri cation normal BW detectors are noted as they occur Performance veri cation of your pulsed RF system consists of the following steps 1 Connecting the computer and warming up the system 2 Loading BASIC and BI...

Page 74: ...Figure 4 1 Specifications and Performance Verification Flow Diagram 4 2 Specifications and Performance Verification ...

Page 75: ...can be run on an HP Vectra personal computer or AT compatible computer 2 The computer must have 2 megabytes of available memory after HP BASIC has been loaded for the performance veri cation program to run Verifying Non Standard Systems To verify systems that contain instruments additional to the standard system network analyzer two sources and the HP 85110 test set disconnect all additional instr...

Page 76: ...d Warm Up the System 1 Connect the computer HP IB to the network analyzer HP IB Connect a 3 5 oppy disk drive to the computer HP IB and set the disk drive HP IB address to 0 2 Turn the system on a Turn on the instruments in the pulsed RF system network analyzer last The system requires approximately one hour to stabilize at its operating temperature Perform the next two steps load BASIC and BIN le...

Page 77: ...oad command and the lename as shown below then press 4RETURN5 or 4ENTER5 Be sure to type the lename exactly as shown Type load SPECS 8510 4RETURN ENTER5 Type run 4RETURN ENTER5 The program s title banner information and a NNNNNNNNNNNNNNNNNNNN RESUME softkey should be displayed on the computer HP 8510 Speci cation and Performance Veri cation Software Press the RESUME softkey 2 The program will load...

Page 78: ...NNNNNN PROGRAM RESET softkey found in the SYSTEM CONFIGURATION menu The main menu will now appear on the computer display Here is a brief explanation of the main menu choices SYSTEM CONFIG Select this menu if you want to return to the Hardware Con guration menu or if you want to use the software con guration menu to set the addresses of your HP 8510 or your printer plotter or select plotter trace ...

Page 79: ...ote HP 8510B Network Analyzer The con guration disk les are not compatible with the HP 8510B network analyzer Instead set the hardware and instrument states in Appendix B manually and then save in instrument state register number 8 by pressing NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN INSTRUMENT STATE SAVE NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN USER PRESET 8 Insert...

Page 80: ...N DETECTOR NORMAL BW 2 On the network analyzer press 4STIMULUS MENU5 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN POWER MENU NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN POWER SOURCE 1 NNNNNNNNNNNNNNNNN 8dBm If an IF OVERLOAD error message appears on the display decrease the power level in 0 5 dB increments until the IF OVERLOAD error message no longer appears on the network analyzer Source 2 On the network a...

Page 81: ...CAL5 Then select the Cal Kit type by pressing the appropriate softkey on the network analyzer display 5 Select NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN Full 2 PORT 6 A series of softkey selections will appear on the CRT NNNNNNNNNNNNNNNNNNNNNNNNNNNNN REFLECT N NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN TRANSMISSION and NNNNNNNNNNNNNNNNNNNNNNNNNNNNN ISOLATION When you press one of these keys another set of s...

Page 82: ... Standard and Displaying the Data When you are ready to measure the veri cation device press NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN MEASURE DATA and respond to the prompts on the computer display The program will initialize the system and give instructions for making the proper connections Measure all of the devices in your kit Press NNNNNNNNNNNNNNNNNNNNNNNNNNNNN PRINT ALL and the program will pri...

Page 83: ... bandwidth of the test and reference detectors in the HP 8510 Trigger Level TTL Trigger Width The minimum pulse width to be applied to the rear panel input of the HP 8510 for the HP 8510 to make a measurement External trigger mode 100 nanoseconds Minimum Time Delay The minimum time span of the x axis of the HP 8510 display in pulse pro le mode 5 nanoseconds Maximum Time Display The maximum time sp...

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Page 87: ...ment is required in addition to the system instruments to perform the pulse detector adjustments Item HP Part Model Number RF Source CW sinewave 20 1 Mhz 10 to 15 dBm HP 3324A 3325 8340 41B 8360 series1 Test Cable required for the adjustment procedure included in the HP 85111A B upgrade kits 85111 60001 Adapters2 Type N m to BNC f 1250 0780 SMA m to BNC m 1250 1787 BNC f to BNC f 1250 0080 Type N ...

Page 88: ...nnected from the system bus For benchtop con gurations notice that the HP 85102 IF detector is placed on top of the HP 85101 display for the adjustment procedure Use the test cable and the SMA to SMB adapter to make the connection from the source s output to the A2 board in the HP 85102 Figure 5 1 Adjustment Procedure Setup Note All of the pulsed RF system instruments can remain connected in the s...

Page 89: ...boards only The cover is only partially moved back to maintain the operating temperature of the HP 85102 as close to the operating temperature when its cover is fully on 3 Turn on all the instruments in the adjustment setup and allow the equipment to warm up for at least one hour 4 On the HP 8510 press 4DOMAIN5 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PULSE PROFILE Ignore the SYSTEM BUS ADDRESS E...

Page 90: ...Reference Value if necessary Note Noise can sometimes make this adjustment appear temporarily out of speci cation Ignore non repeatable spikes 8 Move the test cable to J5 on the A2 IF MUX board refer to Figure 5 2 and replace the original cable on J3 Repeat this procedure from step 6 substituting NNNNNNNNNNNNNNNNNNNNNNNNNNNNN USER 3 a2 for NNNNNNNNNNNNNNNNNNNNNNNNNNNNN USER 2 b2 Adjust the capacit...

Page 91: ...Figure 5 3 Misadjusted Pulse Detector Display Trace Figure 5 4 Adjusted Pulse Detector Display Trace Adjustments 5 5 ...

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Page 93: ...his manual Troubleshooting This section provides troubleshooting information for the racked factory con gured pulsed RF network analyzer system This information may also be useful for similar user con gured systems For additional troubleshooting assistance a block diagram of the system Figure 6 7 and a block diagram of the IF detector including the pulsed RF portion Figure 6 8 are included at the ...

Page 94: ... your mind What are the symptoms Is the failure constant or intermittent Does the failure always occur under a xed set of conditions 2 Check System Setup The system setup check veri es that the system cabling rmware revisions HP IB addresses and operating languages are correct Procedure This procedure is performed with the instruments turned o 1 Use the cabling diagrams in the Installation section...

Page 95: ...source LO source if HP 8340B or HP 8341B 18 decimal address check See HP 8340 41 source Controller HP IB bus addresses 3 5 inch drive 700 decimal See your disk drive manual for HP IB address switch location HP 8510 716 decimal Will be checked after the system is powered up HP 8360 Series Source Check Software Revision Language and HP IB Address When an HP 8360 series source is used with an HP 8510...

Page 96: ... HP IB ADDRESS 19 SELECTED 3 Turn the source o Rear Panel Switch Method 1 Set the rear panel switches on the source as shown in Figure 6 1 Figure 6 1 HP 8360 Series Source Rear Panel Switches HP 8340 41 Source HP IB Address Check These sources are set by front panel keys The procedure sets he source HP IB address to 19 the address of RF source 1 Procedure 1 Turn on the source 2 Press 4SHIFT5 4LOCA...

Page 97: ...efer to Appendix C for instructions to load the proper machine dump con guration le 1 Start with line power OFF to all instruments 2 Switch the line power ON to the instruments in the following order Microwave ampli er if used Sources Test set 85102 85101 As you turn on each instrument watch the front panel indicators for performance as shown in Table 6 2 If an instrument does not power up properl...

Page 98: ...ed RF systems If your system shows a di erent running error message than is listed here refer to the HP 8510C service manual for an explanation PULSE CAL FAILURE ON TEST REFERENCE CHANNEL S This error message reports a failure detected in the pulsed RF circuitry Probable cause of failure HP 85102 A2 multiplexer board HP 85102 A3 and A4 test and reference channel detector boards HP 85102 A16 sample...

Page 99: ...l 4 Use Specific Procedures for Certain Symptomatic Failures If the symptoms of the failure are only present when the system is operating in the wide BW pulsed RF mode the following procedures may help determine the failure If the symptoms are present in both wide BW pulsed RF and normal BW nonpulsed RF operation go to the troubleshooting section of the HP 8510C Service manual for troubleshooting ...

Page 100: ...uments from the network analyzer system bus and HP IB bus and power on the network analyzer If the network analyzer then completes the power on sequence and displays a graticule disregarding any running error messages one of the other instruments or an HP IB cable is defective If the network analyzer still does not complete it s power on sequence call Hewlett Packard for service support Reloading ...

Page 101: ... Pulsed RF Signal Paths Procedure Starting conditions Test set test ports are open nothing is connected to them The system is powered ON Note If you have any special instrument states loaded in the network analyzer save them now in a machine dump disk le before continuing with this procedure A single machine dump le holds all 8 instrument state les Load the le MD PULS or MD PULS A if you have an H...

Page 102: ...message appears then decrease the power level by 1 dB 5 Press INSTRUMENT STATE 4SAVE5 NNNNN 4 to save the maximum power level in register 4 6 The maximum power level must be reset for the remaining instrument state registers 1 2 3 5 6 7 and 8 Press INSTRUMENT STATE 4RECALL5 NNNNN n Press STIMULUS 4MENU5 NNNNNNNNNNNNNN MORE NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN POWER MENU NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN...

Page 103: ...Signal Paths Checking b1 and b2 Signal Paths b1 path 1 Place a 3 5 mm 50 termination on port 1 2 Press INSTRUMENT STATE 4RECALL5 NNNNN 3 This brings up a display similar to Figure 6 4 3 Check for items mentioned in the Signal Path Check paragraph b2 path 1 Move the 3 5 mm 50 termination to port 2 2 Press 4CHANNEL 25 to read the marker values on the b2 path 3 Check for the items mentioned in the Si...

Page 104: ... is most likely in the HP 85102 If the symptom only occurs in the wide BW pulsed RF mode of operation refer to Pulsed RF IF Signal Path Description and then use the HP 85102 IF Detector Option 008 Pulsed RF IF Path Troubleshooting Flowchart Symptom in Normal BW only If the symptom occurs only in the normal BW nonpulsed RF mode of operation refer to the HP 8510C service manual Pulsed RF IF Signal P...

Page 105: ...ed by the A6 clock board The X output is at J2 and the Y output at J3 on each board A16 Remote Application Pulse Track Hold Board The X and Y test signals enter A16 at J3 and J4 respectively The X and Y reference signals enter at J1 and J2 respectively The signals are fed into track and hold circuits The outputs of the T H circuits are sent on to the A17 Sample hold board multiplexer circuits At t...

Page 106: ...Figure 6 5 HP 85102 Pulsed RF Signal Path 6 14 System Service and Troubleshooting ...

Page 107: ...Figure 6 6 Pulsed RF IF Path Troubleshooting Flowchart System Service and Troubleshooting 6 15 ...

Page 108: ...lusions If all of the channels look good with the service adapter and all looked bad in the unratioed power test the HP 85101 and 85102 are working The problem is likely source related Refer to your source troubleshooting manual for further information If all four User channels look bad with the service adapter suspect the 20 MHz signal from the A6 clock board assembly in the HP 85102 Single chann...

Page 109: ...Procedure 3 A2 Pulse IF Mux Reference IF Path Check Prerequisite for using this check Only the a1 or the a2 pulsed RF IF signal path looks bad In the two procedures below always return any moved cables to their original connections before proceeding to the next step If the connections setup correct the problem carry out the instructions in the conclusion column If the problem isn t corrected go on...

Page 110: ...d RF troubleshooting owchart Procedure 4 A3 A4 Pulse Detector IF Path Check Prerequisite for using this check 1 Either both reference a1 a2 or both test b1 b2 pulsed RF IF signal paths look bad 2 Less than three IF paths are bad In the procedures below always return any moved cables to their original connections before proceeding to the next step If the connections setup correct the problem carry ...

Page 111: ...d W47 or W48 and replace it 4 Swap cables W5 W49 If the problem was in the ref a1 a2 path replace W5 If the problem was in the test b1 b2 path replace W49 5 Put in a known good A16 board replace A16 6 Put in a known good A17 board replace A17 7 Return to the pulsed RF troubleshooting owchart Procedure 5 A6 Clock 20 MHz Output Check 1 Disconnect the cable W5 or W54 at A6J9 or J8 and connect an osci...

Page 112: ...6 20 System Service and Troubleshooting ...

Page 113: ...Figure 6 7 HP 85108A Block Diagram ...

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Page 115: ...Figure 6 9 IF Detector with Pulse Option Block Diagram 2 of 2 System Service and Troubleshooting 6 25 ...

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Page 117: ... parts list include the instrument model number complete instrument serial number the description and function of the part and the number of parts required Send the order to the nearest Hewlett Packard o ce To Order Parts fast 800 227 8164 Monday through Friday 6 am to 5 pm Paci c Standard Time The parts specialists have direct online access to replacement parts inventory corresponding to the repl...

Page 118: ...Figure 7 1 HP 85108 Replaceable Parts 7 2 Replaceable Parts ...

Page 119: ...75 1 Cable Assembly A14J5 A2J7 W46 85102 60176 1 Cable Assembly A13J5 A2J5 W47 85102 60177 1 Cable Assembly A3J2 A16J3 W48 85102 60178 1 Cable Assembly A3J A16J4 W49 85102 60179 1 Cable Assembly A6J8 A3J4 W50 85102 60180 1 Cable Assembly A2J6 A4J1 W51 85102 60181 1 Cable Assembly A2J2 A3J1 W52 85102 60182 1 Cable Assembly A8J6 A2J4 W53 85102 60171 1 Cable Assembly A9J5 A2J3 W54 85102 60172 1 Cable...

Page 120: ...ges rack support shelves and front panels SYSTEM RACK PARTS 85106 60002 1 System Cabinet Assembly 85043 00028 1 Filler Panel Right 85043 00029 1 Filler Panel Left 85043 00030 1 Work Surface Assembly 85043 00031 2 Support Rail 85043 00046 1 Blank Panel 1 75 in 85043 00048 2 Blank Panel 5 25 in 85043 20001 1 Ground Stud 85043 20002 2 Shoulder Screw 85043 20003 1 Clip Table Lock 85043 80013 1 Mat Kit...

Page 121: ...Figure 7 2 HP 85108 Replaceable Parts Replaceable Parts 7 5 ...

Page 122: ...1838 1 BNC Cables 8120 1840 2 BNC Cable 48 inch 4 85108 20028 1 Semi Rigid RF Cable 5 85108 20029 1 Semi Rigid RF Cable 6 1250 1894 2 Adapter Male N Male SMA 7 5062 4071 3 Rack Mount Kit 8 85101 80098 1 HP 8510 Operating Service Firmware 9 85108 10003 1 HP 85108 System Con guration Disk 10 08510 10033 1 HP 8510 Performance Veri cation Software 7 6 Replaceable Parts ...

Page 123: ...e width and duty cycle limit In the frequency domain when the analyzer is tuned to the next frequency the maximum PRP is about 30 milliseconds In the Pulse Pro le domain the frequency does not change making the maximum PRP about 3 milliseconds With averaging the PRP can be about 1 millisecond during part of the measurement Other factors which a ect the system PRP are calibration type pulse width d...

Page 124: ...imes of about 75 microseconds the wideband IF responds to rise fall times of about 300 nanoseconds Trigger Delay The time after pulse ON that the measurement is actually made In the Frequency domain the Trigger Delay can be set from down to 6 resolution periods internal or 3 resolution periods external and up to 40 88 milliseconds In the Pulse Pro le domain the trigger delay is automatic depending...

Page 125: ...Figure A 1 Pulse Terms and Definitions Glossary of Pulsed RF System Terms A 3 ...

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Page 127: ... each instrument in the pulsed RF system Table B 1 HP IB Addresses Specific to Pulsed RF Systems HP 8510 System Bus HP IB Address During Pulsed RF Operation HP IB Address During 2nd Test Set Operation Test Set 20 21 RF switch 31 281 Address of 8510 16 System bus 17 Source 1 RF 19 Source 2 LO 18 Plotter 5 Printer 1 Disk 0 Pass thru 31 1 If you have option 001 in your test set and a second test set ...

Page 128: ...ameter Pulsed RF CW Power Source 1 8 dBm1 10 dBm Power Slope src 1 OFF OFF Power Source 2 10 dBm2 N A Power Slope src 2 2 5 dB GHz N A Pulse con g detector wide BW3 normal BW 1 Set source 1 power level to the highest level possible without IF overload Power must be set in the normal BW mode then changed to the wide BW mode if desired 2 Set source 2 power to 10 dBm if an HP 8349B ampli er is used t...

Page 129: ...NNNNNNNNNNNNNNNNNNNNNNNNNNNN MULTIPLIER DENOM should be 1 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN OFFSET FREQUENCY should be 0 Press NNNNNNNNNNNNNN DONE Press NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN DEFINE SOURCE 2 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN MULTIPLIER NUMER should be 1 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN MULTIPLIER NUMER should be 1 ...

Page 130: ...on should appear to the left of the graticule Press NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PULSE OUT HIGH Press 4SYSTEM5 NNNNNNNNNNNNNN MORE NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN SYSTEM PHASELOCK NNNNNNNNNNNNNN NONE Press 4SYSTEM5 NNNNNNNNNNNNNN MORE NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN POWER LEVELING NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN SOURCE1 INTER...

Page 131: ...al BW nonpulsed RF mode Yes MD NPULS Multiple Normal BW nonpulsed RF mode No MD NPULS A Multiple Normal BW nonpulsed RF mode Yes MD SINGSRC1 Single Normal BW nonpulsed RF mode N A 1 This con guration requires a single source and a test set that provides an LO signal such as the HP 8514 8515 8516 or 8517 Refer to the HP 8510C documentation for a con guration diagram Procedure 1 Insert the HP 85108 ...

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Page 133: ... 5 ESD 2 6 external trigger 3 25 F fall time A 2 rmware revision 2 18 frequency domain frequency list 3 17 frequency domain point in pulse 3 14 G general characteristics 4 10 H hardware states B 1 heating 2 4 height cabinet 2 6 high power measurement 30 dB ampli er 3 31 high power measurements 3 29 example 3 30 high input levels 3 31 HP IB address setting 6 3 HP IB addresses 6 3 B 1 HP IB bus 2 12...

Page 134: ...levels 6 9 rear panel links 3 30 receiving checklist 2 2 replaceable parts 7 1 ordering information 7 1 requirements altitude 2 3 cooling 2 3 heating 2 3 humidity 2 3 power 2 4 resolution period A 2 rise time A 2 running error messages for pulsed RF systems 6 6 S sequence calibration 3 36 measurement 3 36 service adapter test 6 16 setting HP IB addresses 6 3 signal conditioning external 3 30 signa...

Page 135: ...U unratioed power levels 6 9 upgrades 1 5 user parameters 3 33 V voltages 2 5 W warranty iii 1 5 weight system 2 6 width cabinet 2 6 Index 3 ...

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