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Agilent Technologies 54835A Service Manual Download Page 188

Chapter 7: Replaceable Parts

Replaceable Parts List

7–16

Replaceable Parts

Ref.
Des.

Agilent Part
Number

QTY

Description

Exchange Assemblies

A13

54835-69527

1

4-CH ACQUISITION ASSEMBLY W/ATTENUATORS (Agilent Model 54835A)

A13

54845-69527

1

4-CH ACQUISITION ASSEMBLY W/ATTENUATORS (Agilent Model 54845A)

A13

54846-69527

1

4-CH ACQUISITION ASSEMBLY W/ATTENUATORS (Agilent Model 54846A)

External Chassis Parts

MP1

54801-47401

2

KNOB 12 MM GRAY

MP3

54801-47403

1

KNOB 24 MM GRAY

MP4

54801-47404

1

KNOB 12 MM YELLOW

MP5

54801-47405

1

KNOB 12 MM GREEN

MP6

54801-47406

1

KNOB 12 MM PURPLE

MP7

54801-47407

1

KNOB 12 MM PINK

MP8

54801-47408

1

KNOB 18 MM YELLOW

MP9

54801-47409

1

KNOB 18 MM GREEN

MP10

54801-47410

1

KNOB 18 MM PURPLE

MP11

54801-47411

1

KNOB 18 MM PINK

MP12

54810-44901

1

MOLDED-OVER HANDLE

MP13

54810-45001

2

END CAP - HANDLE

MP14

54810-68701

1

ACCESSORY POUCH

MP15

54815-94301

1

LABEL-KNOBS AND KEYS

MP16

54845-94304

1

LABEL BNC-4 CH (Agilent 548/35A/45A/46A - 1 M

Ω

 

≅

 12pF 100V Max) 

MP17

54845-94305

1

LABEL-LOGO (Infiniium 1.5 GHz, 8 GSa/s) for 54845A

MP17

54835-94302

1

LABEL-LOGO (Infiniium 1.0 GHz, 4 GSa/s) for 54835A

MP17

54846-94305

1

LABEL-LOGO (Infiniium 2.25 GHz, 8 GSa/s) for 54846A

MP19

5041-9167

2

FOOT-BOTTOM (Old Version)

MP19

5041-9168

2

FOOT-BOTTOM NON-SKID (Old Version)

MP20

5042-1753

2

FOOT-REAR

MP21

C3751-60201

1

MOUSE

MP22

54810-85903

1

MOUSE PAD

MP23

E2610-60001

KEYBOARD (OPTIONAL ON SERIAL NUMBERS US37349999 AND BELOW)

MP38

1460-1345

2

TILT STAND (Old Version)

MP70

54810-61001

4

FOOT W/INSERT (New Version)

MP72

54810-03700

1

TILT STAND (New Version)

W1

8120-1521

1

CABLE-POWER (standard 125V USA)

W1

8120-1703

CABLE-POWER (Option 900-UK)

W1

8120-0696

CABLE-POWER (Option 901-AUSTL)

W1

8120-1692

CABLE-POWER (Option 902-EUR)

W1

8120-0698

CABLE-POWER (Option 904-250V USA/CANADA)

W1

8120-2296

CABLE-POWER (Option 906-SWIT)

W1

8120-2957

CABLE-POWER (Option 912-DEN)

W1

8120-4600

CABLE-POWER (Option 917-AFRICA)

W1

8120-4754

CABLE-POWER (Option 918-JAPAN)

Electrical Assemblies

A1

0950-3252

1

POWER SUPPLY

A2

2090-0396

1

COLOR FLAT-PANEL DISPLAY

A3

0950-3235

1

INVERTER-DISPLAY BACKLIGHT

Summary of Contents for 54835A

Page 1: ...rough XX4106 and above for information about serial numbers see Instruments Covered by this Guide in section 1 The part number for this Service Guide For Safety information Warranties and Regulatory information see the pages at the back of this book Copyright Agilent Technologies 1997 2001 All Rights Reserved Agilent Model 54835A 45A 46A Oscilloscopes ...

Page 2: ... ps div to main time base setting Intensified waveforms on main sweep window make it easy to see what will appear in delayed sweep window Acquisition and general controls start and stop the scope and do basic setup Run and stop controls for continuous or single shot acquisitions Clear display before one or more acquisitions Default setup and Autoscale set initial configuration Hard disk drive and ...

Page 3: ...Drive Power Acquisition and general controls Horizontal controls Display and Graphical Interface Marker and Quick Measurements Vertical Controls Vertical Inputs Auxiliary Trigger Input Trigger Setup AutoProbe Interface ...

Page 4: ...vers calibration and adjustment procedures how to do them and how often they need to be done Chapter 5 provides troubleshooting information Chapter 6 gives the procedures and techniques for replacing assemblies and other parts Chapter 7 includes a list of exchange assemblies and other replaceable parts part ordering information and shipping information Chapter 8 briefly covers the internal operati...

Page 5: ... printer 2 9 To connect an external monitor 2 10 To connect the GPIB cable 2 10 To tilt the oscilloscope upward for easier viewing 2 11 To power on the oscilloscope 2 12 To verify basic oscilloscope operation 2 13 To clean the instrument 2 14 To clean the display monitor contrast filter 2 14 3 Testing Performance 3 2 Testing Interval 3 2 Equipment Required 3 2 Self Test Verification 3 2 Test Recor...

Page 6: ... only 5 24 To configure the motherboard jumpers and set up the BIOS 5 29 To troubleshoot the acquisition system 5 49 To troubleshoot attenuator failures 5 56 Software Revisions 5 59 6 Replacing Assemblies 6 2 ESD Precautions 6 2 Tools Required 6 2 To return the instrument to Agilent Technologies for service 6 3 To remove and replace the cover 6 4 To disconnect and connect Mylar flex cables 6 5 To ...

Page 7: ...6 To remove and replace RAM SIMMs or SDRAM DIMMs 6 27 To remove and replace an attenuator 6 28 To reset the attenuator contact counter 6 30 To remove and replace an acquisition hybrid 6 32 7 Replaceable Parts 7 2 Ordering Replaceable Parts 7 2 Power Cables and Plug Configurations 7 3 Exploded Views 7 4 Replaceable Parts List 7 15 8 Theory of Operation 8 3 Block Level Theory 8 3 Attenuator Theory 8...

Page 8: ...Contents 4 ...

Page 9: ...ce guide 1 2 Accessories supplied 1 3 Options available 1 4 Accessories available 1 5 Specifications characteristics 1 7 Agilent Technologies 54835A 45A 46A general characteristics 1 14 Recommended test equipment 1 16 General Information ...

Page 10: ...refer to the Agilent Technologies website and download a newer manual edition in Adobe Acrobat pdf format The Agilent Technologies URL is www agilent com It will be necessary to search on a key word such as Infiniium Service Guide and follow the links For additional information on configuration differences see the following sections in this service guide To configure the motherboard jumpers and se...

Page 11: ...ad Agilent P N 54810 85903 1 Keyboard 4 Agilent 1161A 10 1 10 MΩ passive probes Accessory Pouch Agilent P N 54810 68701 Power cord see chapter 7 Replaceable Parts for available power cords User s Quick Start Guide Programmer s Guide and Programmer s Quick Reference Agilent Technologies Infiniium Oscilloscope Service Guide for Agilent Models 54835A 45A 46A this manual ...

Page 12: ...passive probe 003 Add 1 Agilent 1163A 10 1 500 Ω low C passive probe 006 Add 1 Agilent 1152A 2 5 GHz 0 6 pF active probe 007 Add 1 Agilent E2613A 0 5 mm wedge kit assembly 008 Add 1 Agilent 1153A 200 MHz differential probe 009 Add 1 Agilent 1154A 500 MHz differential probe 010 Add 1 Agilent 1159A 1 GHz differential probe 100 Communication Mask Test Kit 200 VoiceControl Option 1BP MIL STD 45662A an...

Page 13: ...162A 1 1 Passive Probe Agilent 1163A 10 1 500 Ω low C Passive Probe Agilent 1170A 500 MHz Low Mass miniature 10 1 10 MΩ Passive Probe Agilent 1171A 500 MHz Low Mass miniature 10 1 10 MΩ Passive Probe Agilent 1172A 500 MHz Low Mass miniature 20 1 10 MΩ Passive Probe Agilent 1173A 500 MHz Low Mass miniature 20 1 10 MΩ Passive Probe Agilent 1182A Testmobile Agilent 10020A Resistive Divider Probe Kit ...

Page 14: ...evice Agilent E2625A Communication Mask Test Kit Agilent 54810 68703 Service Kit includes service software and fan safety shield Agilent 54801 00601 Fan Safety Shield clips onto side of chassis with cover removed Agilent E2635A Voice Control Retrofit Kit Agilent E2636A Microphone Replacement ...

Page 15: ...A 4 channel mode 4 GSa s Maximum Effective Sample Rate Equivalent Time 500 GSa s Memory Depth 2 channel mode 65 536 points 4 channel mode 32 768 points Agilent 54835A Agilent 54845A and Agilent 54846A Memory Depth Modes Auto Optimized for best combination of update rate and display quality Manual Selectable 2 channel mode from 16 to 65 536 points 4 channel mode from 16 to 32 768 points Sampling Mo...

Page 16: ...ps Sensitivity2 1 MΩ Coupling 2 mV div to 2 V div 50 Ω Coupling 2 mV div to 1 V div Input Impedance 1 MΩ 1 12 pf or 50 Ω 1 5 VSWR 50 Ω 54835A 45A dc to 500 MHz 1 30 500 MHz to 1 GHz 1 50 1 GHz to 1 5 GHz 1 75 54846A dc to 500 MHz 1 30 500 MHz to 1 GHz 1 50 1 GHz to 1 5 GHz 1 75 1 5 GHz to 2 25 GHz 2 50 Input Coupling dc ac 7 Hz available in 1 MΩ only Maximum Input Voltage 1 MΩ 100 V dc ac ac 10 kH...

Page 17: ...identifiestheprobetype andsets uptheproperinput impedance attenuation ratio probe power and offset range as needed Main Time Base Range 100 ps div to 20 s div Horizontal Position Range pre trigger 0 to 1 s or one full screen width whichever is larger post trigger 0 to 1 s or one full screen width whichever is larger Delayed Sweep Range 1 ps div to current main time base setting Delayed Sweep Delay...

Page 18: ...a range of time Captures patterns as narrow as 500 ps State Select one channel as clock specify other inputs as High Low or X Logic Type AND or NAND Delay by Time Time 30 ns to 160 ms The trigger is qualified by an edge After the delay a rising falling edge on any one selected input will generate the trigger Delay by Events Events 1to16 000 000 risingorfalling edges The triggeris qualified byanedg...

Page 19: ...0 MHz processor Measurement Conditions Real Time sampling mode minimum persistence triggered sweep no interpolation markers off math off connect the dots off 1 channel acquisition 50 ns div statistics off 512 point record 2 GSa s Waveforms sec 2 100 Vpp Measurements sec 130 Automatic Parametrics 33 automatic measurements Vpp Vmin Vmax Vavg Vamptd Vbase Vtop Vrms Preshoot Overshoot Vupper Vmiddle V...

Page 20: ...s and store screen images to both the hard drive and the floppy drive File types Waveforms Internal Y values X and Y values in ASCII or Microsoft Excel formats Images BMP EPS GIF PCX PS Postscript TIF Mouse Standard mouse supplied supports any Microsoft mouse compatible pointing device serial or PS 2 Operating System Microsoft Windows 95 or Microsoft Windows 98 Waveform Memories 4 nonvolatile wave...

Page 21: ... overvoltage category III Video Output 15 pin VGA full color 1 Rise Time figures are calculated from tr 35 Bandwidth 2 Magnification is used below the 10 mV div range and between the major attenuation settings Full scale is defined as the major attenuator setting over an intermediate setting Major settings for 50Ω 10 20 50 100 200 500 1000 mV Major settings for 1 MΩ all as for 50Ω plus 2 V 3 N A 4...

Page 22: ...lative humidity at 65 C Altitude Operating Up to 4 600 meters Nonoperating Up to 15 300 meters Vibration Operating Random vibration 5 500 Hz 10 minutes per axis 0 3g rms Nonoperating Random vibration 5 500 Hz 10 minutes per axis 2 41g rms Resonant search 5 500 Hz swept sine 1 octave minute sweep rate 0 75g 5 minute resonant dwell at 4 resonances per axis Physical Size excluding handle Height 216 m...

Page 23: ...Chapter 1 General Information Agilent Technologies 54835A 45A 46A general characteristics 1 15 ...

Page 24: ...y 0 15 dB Agilent 11667A P Probe No substitute Agilent 1161A P Probe Tip Adapter 1160 series to BNC Agilent 5063 2143 P Oscilloscope General purpose Agilent 54622A P T Blocking Capacitor 0 18 µF Agilent 10240B P Cable Type N m m 3 foot Agilent 11500A or B P Cable 2 BNC 3 foot Agilent 10503A P A T Cable 3 BNC 9 inch Agilent 10502A P A T Adapter N m to BNC m Agilent 1250 0082 P Adapter N m to BNC f ...

Page 25: ...rd 2 7 To connect to the LAN card 2 7 To connect oscilloscope probes 2 8 To connect a printer 2 9 To connect an external monitor 2 10 To connect the GPIB cable 2 10 To tilt the oscilloscope upward for easier viewing 2 11 To power on the oscilloscope 2 12 To verify basic oscilloscope operation 2 13 To clean the instrument 2 14 To clean the display monitor contrast filter 2 14 Preparing for Use ...

Page 26: ...ng the front panel Using the graphical interface Starting and stopping acquisition Adjusting oscilloscope configuration Making measurements The Infiniium Oscilloscope is designed to make it easy for you to use a high performance digitizing oscilloscope The familiar front panel oscilloscope interface with knobs and buttons is optimized for the most common kinds of troubleshooting tasks and basic me...

Page 27: ...cally and electrically Check the accessories Accessories supplied are listed in chapter 1 of this service guide If the contents are incomplete or damaged notify your Agilent Technologies Sales Office Inspect the instrument If there is mechanical damage or defect or if the instrument does not operate properly or pass performance tests notify your Agilent Technologies Sales Office If the shipping co...

Page 28: ...in chapter 7 WARNING SHOCK HAZARD BEFORE YOU CONNECT THIS INSTRUMENT TO MAINS POWER OR LIVE MEASURING CIRCUITS you must provide a protective earth ground Failure to provide a protective earth ground could result in a shock hazard if there is a failure in this instrument or equipment connected to it The mains plug must be inserted in a socket outlet provided with a protective earth contact Do not u...

Page 29: ...oscope functions through the graphical interface or to find out more about the oscilloscope through the built in information system The optional touchpad pointing device connects in exactly the same way as the mouse The supplied mousepad provides the correct surface for smooth mouse operation To modify the mouse configuration see the User s Quick Start Guide To attach the optional trackball 1 Push...

Page 30: ...ball baseplate should now be secure against the side of the oscilloscope 4 Snap the trackball assembly onto the pins of the baseplate The trackball and buttons should face up and toward the front of the oscilloscope 5 Connect the 9 pin D connector on the trackball cable to the COM1 port on the back panel Tighten the retaining screws For information on changing the trackball settings see the User s...

Page 31: ...N card Make sure the connection is secure Two connections are possible on the LAN card the RJ 45 connection and a BNC connection Units equipped with 10 100Base T LAN cards have an RJ 45 connector only Each Infiniium Oscilloscope now ships with a LAN card installed If you want a LAN connection but have an older Infiniium Oscilloscope model that does not have a LAN card installed contact your Agilen...

Page 32: ...he left then pull the connector body away from the front panel of the oscilloscope without twisting it CAUTION AVOID DAMAGE TO THE PROBE CONNECTOR Do not attempt to twist the snap on probes on or off the oscilloscope s BNC connector Twisting the probe connector body will damage it CAUTION DO NOT EXCEED THE MAXIMUM INPUT VOLTAGE Do not exceed the maximum input voltage rating of the oscilloscope inp...

Page 33: ...25 pin small D connector to the printer output connector on the rear of the oscilloscope Tighten the thumbscrews to secure the cable 2 Attach the larger 36 pin D connector to the printer Latch the wire bails into the tabs on each side of the connector 3 Set the printer configuration to use the Centronics or Parallel interface if necessary Refer to the User s Quick Start Guide for software installa...

Page 34: ...entation for your printer if you have questions about configuring the printer to use the serial interface To connect an external monitor You can connect a VGA compatible monitor to the Infiniium oscilloscope to provide a larger viewing area Connect the monitor cable to the display board video connector at the rear panel of the oscilloscope Tighten the retaining screws To connect the GPIB cable Att...

Page 35: ... wire bails lift up the front of the oscilloscope grasp one of the wire bails under the front corner and pull it down and forward until it latches into place Repeat for the other wire bail If your oscilloscope has front feet with a wire bail between the two feet lift up the front of the oscilloscope grasp the bail near the center and pull it down and forward until it latches into place ...

Page 36: ...re applying power You can connect and disconnect probes while the oscilloscope is powered on You Can Configure the Backlight Saver The oscilloscope display has a backlight saver that turns off the backlight when there has been no interface activity for a pre determined period The default time is 8 hours and is configurable through the Display Setup dialog in the graphical interface You can turn th...

Page 37: ...tely 5 divisions and a period of almost 3 divisions If you do not see the waveform ensure your power source is adequate the oscilloscope is properly powered on and the probe is connected securely to the front panel channel input BNC and to the probe calibration output 5 Move the mouse pointer to the graphical interface enable button and click once The graphical interface enable button is in the up...

Page 38: ...p and water solution CAUTION BE CAREFUL TO AVOID DAMAGING COMPONENTS Do not use too much liquid when cleaning the oscilloscope Water can enter the front panel keyboard damaging sensitive electronic components To clean the display monitor contrast filter Clean the display monitor contrast filter using glass cleaner and lens tissue or a soft cloth ...

Page 39: ...3 6 Procedure 3 6 To test voltage measurement accuracy 3 7 Procedure 3 7 To test offset accuracy 3 11 Procedure 3 11 To test bandwidth 3 13 Equivalent Time Test 3 13 Real Time Test 3 15 1 MΩ 500 MHz Test 3 15 To test time measurement accuracy 3 16 Equivalent Time Mode Procedure 3 16 Real Time Mode Procedure 3 21 To test trigger sensitivity 3 23 Internal Trigger Test 3 23 Procedure Auxiliary Trigge...

Page 40: ...est equipment and time required for performance tests perform the self tests These internal tests verify many functions of the oscilloscope To run the self tests enable the graphical interface then select Self Test from the Utilities menu The Self Test drop down list box allows you to select Scope Self Tests Key and Knob Test or LED Test A message is displayed with the instruction to remove all in...

Page 41: ...rage new data with the old so it takes longer for the waveform to stabilize Press the Clear Display key while changing input signals The instrument will restart averaging and give a quick indication of the result of the signal change Averaging Averaging is used to assure a stable signal for measurements It is not necessary to wait for complete stability of the signal averaging complete as long as ...

Page 42: ...le and the BNC to banana plug adapter 2 Enable the graphical interface Use the mouse to click on the button in the upper right hand corner of the display See figure 3 1 Figure 3 1 Enabling the graphical interface 3 Press Default Setup to set the oscilloscope to default conditions 4 Select Calibration from the Utilities menu 5 Select DC from the Aux Output drop down list box See figure 3 2 Equipmen...

Page 43: ...ficant digits V1 __________ 8 Set the level to 2 500 V using the Level spin box or the numeric keypad dialog 9 The DVM should read near 2 500 V Record the reading V2 __________ 10 Subtract the second reading from the first reading then divide the result by 5 For example if the first reading is 2 498 V and the second reading is 2 497 V then 11 The final result should be between 0 998 and 1 002 Reco...

Page 44: ...ee figure 3 3 Figure 3 3 Input Resistance Equipment Setup 3 Connect the male end of the BNC tee to the channel 1 input of the oscilloscope 4 Press Default Setup to set the oscilloscope to default conditions 5 Press the Input key for Channel 1 to select 1 MΩ then 50Ω and verify resistance readings of 1 MΩ 10 kΩ and 50 Ω 0 75 Ω respectively 6 Record the readings in the Performance Test Record 7 Repe...

Page 45: ... scale without averaging or 12 bits 0 024 of full scale with 32 averages at ful resolution scale Offset Accuracy 1 00 of channel offset 1 of full scale at full resolution scale Equipment Required Procedure 1 Connect the equipment See figure 3 4 a Use a BNC to banana adapter to connect a BNC cable to the power supply b Connect a BNC tee to the other end of the cable and connect the tee to channel 1...

Page 46: ... key 4 Using the mouse enable the graphical interface 5 Select Acquisition from the Setup menu 6 Select Equivalent Time sampling mode Enable Averaging Set the of Averages to 32 either using the spin box or the numeric keypad dialog Click Close See figure 3 5 Figure 3 5 Acquisition Setup for Voltage Accuracy Measurement 7 Use the following table for steps 8 through 15 Select Equivalent Time samplin...

Page 47: ...tup menu 10 Set the vertical scaling for Channel 1 to the volts div value from the first row of the table in step 7 Set the Offset value to the Position value from the first row of the same table Click Close See figure 3 7 Scale Offset Supply Tolerance Limits 2 V div 2 5 V 5 V 163 8 V 4 836 V to 5 164 V 1 V div 2 5 V 5 V 82 mV 4 918 to 5 082 V 500 mV 1 75 V 3 5 V 41 mV 3 459 to 3 541 V 200 mV 700 ...

Page 48: ...teps 10 through 14 for the rest of the rows in the table 16 With the channel keys set the active channel OFF and the next ON A channel is ON if its key is illuminated and OFF if it is not illuminated 17 Move the BNC tee to the next channel and repeat steps 8 through 15 for that channel 18 Repeat steps 8 through 17 for the rest of the channels 19 Repeat steps 3 through 18 for the 50Ω input To Set V...

Page 49: ...scope to default conditions 3 Select Acquisition from the Setup menu 4 Select Equivalent Time under Sampling Mode Enable Averaging and set the Points for averaging to 32 Click Close Setup is the same as that for the voltage measurement accuracy test See figure 3 5 5 Use the following table for steps 6 through 12 6 Select Channel 1 from the Setup menu 7 Set the vertical Scale to the Volts div value...

Page 50: ...the reading in the Performance Test Record To find the current position setting select Channel 1 from the Setup menu and read the Offset field Click Close when finished 11 Repeat steps 6 through 10 for the other lines in the table 12 With the channel keys set the active channel OFF and the next ON 13 Move the BNC from one channel to the next 14 Repeat steps 6 through 13 for each channel setting th...

Page 51: ... the equipment a With the N cable connect the signal generator to the power splitter input Connect the power sensor to one output of the power splitter b With an N to BNC adapter connect the other splitter output to the channel 1 input 2 Press Default Setup to set the oscilloscope to default conditions 3 Select Acquisition from the Setup menu Select Equivalent Time sampling mode Click Close Select...

Page 52: ...Use this step for model 54845A 1500 MHz Equivalent Time bandwidth check Set the sweep speed to 50 µs div using the Horizontal sweep speed knob c Use this step for model 54846A 2250 MHz Equivalent Time bandwidth check Set the sweep speed to 50 µs div using the Horizontal sweep speed knob d Use this step for Real Time bandwidth checks 1000 MHz on 54835A 1500 MHz on 54845A or 2250 MHz on 54836A Set t...

Page 53: ...t 54835A then click Close 25 Repeat steps 4 through 19 testing channels 1 2 3 and 4 to the 1 GHz limit Agilent 54845A and 54846A or the 500 MHz limit Agilent 54835A 1 MΩ 500 MHz Test on 54835A 54845A and 54846A 26 Disconnect the power splitter from the channel input 27 Select Acquisition from the Setup menu 28 Select Equivalent time Sampling Mode and click Close 29 Connect the Agilent 1161A 10 1 p...

Page 54: ...the signal generator You adjust the signal generator output level to change the risetime of the squarewave Equivalent Time Mode Procedure This test checks time measurement in equivalent time mode with averaging 1 Set the Agilent 8664A signal generator for a 40 MHz sine wave 25 0 ns period at 250 mVrms 2 Connect the output of the signal generator to the INPUT of the Agilent 8447D RF amplifier 3 Con...

Page 55: ... 9 Adjust the signal generator output voltage to obtain a waveform with a risetime of approximately 700 ps to 1 4 ns You can measure the risetime by selecting the Risetime command from the Time submenu of the Measure menu See figure 3 9 Figure 3 9 Waveform for Time Measurement Accuracy Check 10 Select Acquisition from the Setup menu Use the risetime measurement to verify correct waveform shape for...

Page 56: ...m the Time submenu of the Measure menu Select Channel 1 as the source in the dialog that appears and click Close See figure 3 11 Figure 3 11 Source Selection for Delta Time Measurement 13 Select Measurement Definitions from the Customize submenu of the Measure menu If you have code Revision A 03 00 or higher select Delta Time from the Measurements Definitions submenu of the Measure menu 14 Set Fro...

Page 57: ... be 50 ns 283 ps minimum 49 72 ns and maximum 50 28 ns Record theminimum and maximum readings in the Performance Test Record 24 Change the signal generator frequency to 1 MHz 1 µs period 25 Select horizontal from the setup menu Set the scale to 1 µs div position to 11 ns For valid statistical data Inequivalenttimemode measurementspecificationsarevalidwithsixteenormoreacquisitionsaveraged Statistic...

Page 58: ...omize submenu of the Measure menu If you have code Revision A 03 00 or higher select Delta Time from the Measurements Definitions submenu of the Measure menu 29 Set the To Edge to 6 with Direction Rising and Threshold Middle Click Close See figure 3 13 Figure 3 13 New Measurement Settings for Delta Time Measurement 30 Clear measurement statistics as in step 18 and restart the measurement 31 The de...

Page 59: ... Agilent 54835A Enable Averaging with the number of points set to 16 Set Memory Depth to Automatic Click Close See figure 3 14 Figure 3 14 Acquisition Setup for Real Mode Procedure showing Agilent 54845A 4 Set sweep speed to 50 ns div with horizontal position at 0 0 s 5 Select Measurement Definitions from the Customize submenu of the Measure menu If you have code Revision A 03 00 or higher select ...

Page 60: ...he Measurements Definitions submenu of the Measure menu 18 Set the To Edge to 101 with Direction Rising and Threshold Middle Click Close 19 Delta time mean should read the following For Agilent 54835A 3 949999 µs 326 ps minimum 3 949673 µs maximum 3 950326 µs Record the reading in the Performance Test Record For Agilent 54845A 3 94999 µs 301 ps minimum 3 949688 µs maximum 3 950291 µs Record the re...

Page 61: ...on Setup for Trigger Sensitivity Test 4 Set horizontal time div to 5 ns div Internal dc to 500 MHz 0 5 div 100 MHz to 500 MHz 1 0 div 500 MHz to 1 GHz 1 5 div Auxiliary dc to 500 MHz 300 mVpp Equipment Critical Specifications Recommended Model Part Signal Generator 100 and 500 MHz 1 0 GHz 30 80 mVrms output Agilent 8664A Power Splitter outputs differ by 0 15 dB Agilent 11667A Termination BNC feedt...

Page 62: ... A and Marker B keys on the front panel See figure 3 17 Figure 3 17 Setting the Markers for a 0 5 Division Reference 9 Press the Sweep key Trigger section of the front panel controls to select Trig d The scope s Armed and Trig d LEDs in the Horizontal section of the front panel should flash However the waveform display may not be stable 10 Adjust the trigger level control for a stable display 11 T...

Page 63: ...o the Aux Trig input through a 50 Ω feedthrough termination Connect the other output of the power splitter to channel 1 2 Set the signal generator for 500 MHz approximately 0 dBm 3 Set the channel 1 input to 50 Ω input impedance and press Autoscale 4 Set the channel 1 scaling to 50 mV div Then set the signal generator for 6 divisions of signal 300 mVpp 5 Press the Source key Trigger section of fro...

Page 64: ...3 26 ...

Page 65: ...___________ 500 mV div 50Ω 3 5 V 3 459 V to 3 541 V ___________ ___________ ___________ ___________ 200 mV div 1 MΩ 1 4 V 1 384 V to 1 416 V ___________ ___________ ___________ ___________ 200 mV div 50Ω 1 4 V 1 384 V to 1 416 V ___________ ___________ ___________ ___________ 100 mV div 1 MΩ 700 mV 691 8 mV to 708 2 mV ___________ ___________ ___________ ___________ 100 mV div 50Ω 700 mV 691 8 mV ...

Page 66: ...___________ 5 µs 4 9971 to 5 0029 µs __________________ __________________ Time measurement accuracy realtime mode Period Limits Minimum Maximum Agilent 54835A 39 50 ns 53 ps Agilent 54845A 46A 39 50 ns 28 ps 39 447 to 39 553 ns 39 47 to 39 53 ns __________________ __________________ Time edge 11 Limits Agilent 54835A 395 ns 78 ps Agilent 54845A 46A 395 ns 53 ps 394 922 to 395 078 ns 394 947 to 39...

Page 67: ... 2 Operating Hints 4 3 Loading Default Oscilloscope Settings 4 3 Loading New Software 4 3 Calibration Procedures 4 3 To check the power supply 4 4 To check the 715 Hz auxiliary output probe compensation squarewave 4 6 To check the flat panel display FPD 4 7 To run the self calibration 4 10 Calibrating and Adjusting ...

Page 68: ... display These adjustments only need to be done under circumstances set by certain needs which are explained in other areas of this guide The self calibration uses signals generated in the oscilloscope to calibrate channel sensitivity offsets and trigger parameters You should run the self calibration yearly or according to your periodic needs when you adjust or replace the acquisition assembly or ...

Page 69: ... drive New code is loaded into the oscilloscope by using the floppy disk drive It is rarely necessary to reload the code You should load the code only if prompted by a troubleshooting procedure or if you want to load a later version of code To load new code enable the graphical interface then select Upgrade Software from the Utilities menu You can then follow the instructions on the screen inserti...

Page 70: ...6 Replacing Assemblies WARNING INJURY CAN RESULT Use care when working around the oscilloscope with the cover off and power applied The fan blades are exposed and could cause injury also there is approximately 900 V generated by the backlight inverter for the flat panel display 2 Connect the oscilloscope power cord and set power switch to ON 3 Refer to the following figure for testpoint locations ...

Page 71: ...1 supply voltage is within limits as shown in the following table Table 4 1 Power Supply Voltage Limits 7 Repeat steps 4 through 6 for each of the other supply voltages If any supply voltage is not within specifications see chapter 5 Troubleshooting Supply Voltage Specification Limits 5 1 V 0 1 V 5 0 V to 5 2 V 5 2 V 0 1 V 5 1 V to 5 3 V 12 2 V 0 3 V 11 9 V to 12 5 V 12 2 V 0 3 V 11 9 V to 12 5 V ...

Page 72: ... not recorded in the Performance Test Record Equipment Required You can check the 715 Hz auxiliary output using the scope itself Procedure 1 Press Default Setup 2 Use a BNC cable to connect the front panel Aux Out to the Channel 1 input 3 Set Coupling to DC and Input to 50Ω for Channel 1 4 Press Autoscale 5 Select Vamptd from the Voltage submenu of the Measure menu 6 Select Frequency from the Time...

Page 73: ...m Length 10 mm Dent φ 0 4mm Dot Defect A dot is defined as 1 2 or 3 stuck subpixels touching horizontally Subpixels are horizontal red green bluetriads sothesemayshowupas one of 8 colors or black Bright dot N 5 Dark dot N 7 Total dot N 12 Two adjacent dots Bright dot Dark dot 2 pairs 2 pairs Three or more adjacent dots Not allowed Distance between defects Bright dot Dark dot 10 mm 10 mm Line Defec...

Page 74: ...nel display FPD 4 8 Figure 4 2 Starting the Screen Test 5 Click Start A new dialog appears with a series of radio buttons that allow selection of different background colors See figure 4 3 Click to start the test SelectScreentodo the flat panel display test ...

Page 75: ...urrent selection These pixels are either inactive or stuck If black when a color or white is selected they are inactive if another color than the current selection but not black then they are stuck If the display does not meet the specification given on the previous page replace it See chapter 6 for removal and replacement procedures 8 Repeat steps 6 and 7 for all colors Click one of these buttons...

Page 76: ...rification Equipment Required self calibration 1 Enable the graphical interface 2 Select Calibration from the Utilities menu 3 If the Cal Memory Protect box in the Calibration dialog is checked click the check box to clear the check mark See figure 4 4 Equipment Critical Specifications Recommended Model Part Cable BNC 50 Ω 9 inch Agilent 10502A Let the Oscilloscope Warm Up Before Running the Self ...

Page 77: ...able change click OK in the dialog box to continue the calibration The oscilloscope displays a Passed Failed message as each calibration routine is completed 5 After calibration has been completed click to check the Cal Memory Protect box to protect the calibration memory Then click Close Clear Cal Memory Protect to Run self calibration You cannot run self calibration if this box is checked If cal...

Page 78: ...4 12 ...

Page 79: ... setup 5 29 Configuring the AMI Series 727 Motherboard Jumpers 5 32 To configure the AMI Series 727 WINBIOS Parameters 5 34 Configuring the AMI Series 757 Motherboard for 200 MHz CPU 5 37 To configure the AMI Series 757 WINBIOS Parameters with 1 44 Mbyte floppy drive 5 39 Configuring the AMI Series 757 Motherboard for 300 MHz CPU 5 42 To configure the AMI Series 757 WINBIOS Parameters with 120 Mby...

Page 80: ...your fingers from the fan blades Tools Required You will need basic electronic troubleshooting tools including a digital multimeter and a 100 MHz oscilloscope Performance verification tests have more stringent requirements See chapter 1 for the list of recommended test equipment If you need to remove and replace assemblies you will need some of the hand tools listed in chapter 6 Replacing Assembli...

Page 81: ...ument setup procedure Use the default setup when a procedure requires it Press the Default Setup key to set the instrument to the default state To install the fan safety shield 1 Disconnect the instrument power cord and remove the cover If necessary refer to the procedures in chapter 6 Replacing Assemblies 2 Clip the fan safety shield over the outside of the instrument chassis next to the fans See...

Page 82: ...wchart contains the entire troubleshooting path from a failed instrument to a working one and will direct you in an orderly manner through the possible failure symptoms Reference letters on the flowcharts point to procedural steps that explain the brief instructions in the chart Do not try to troubleshoot by following only the reference text because the text is not in the correct order for trouble...

Page 83: ...isplay on Screen Run Scope Self Tests Scope Self Tests Pass Check Front Panel Response Front Panel Response OK Run Knob Key and LED Tests Knob Key and LED tests pass System Works Run Self Calibration Do Performance Tests End Yes Yes No No Yes Yes No No A B C D E F Go to No Display Troubleshooting Go to Acquisition Troubleshooting Keyboard Troubleshooting ...

Page 84: ... for your troubleshooting path A Perform power up 1 Power on the instrument A short time after the instrument is turned on the scope graticule is displayed on the screen The screen should look similar to the next figure The exact appearance may vary depending on the setup selected before the instrument was turned off Figure 5 2 Power on Display Default Graphical Interface Disabled 2 Press the Defa...

Page 85: ...tly If any fail to work run the Knob and Key selftest and the LED selftest in step E E Run the Knob and Key selftest and the LED selftest 1 Enable the graphical interface 2 Select Self Test from the Utilities menu 3 Select the Knob and Key selftest from the Self Test drop down list box 4 Click the Start test button and follow the instructions on the screen If any of the knobs or keys do not work g...

Page 86: ...onnections and power on Fans running Power LED Lit Connect external monitor cycle power and check power up sequence Power up displayed on ext monitor Check video to flat panel display Video to flat panel display OK Check backlight etc Replace SVGA Card No Yes Yes No Yes Use visual audible powerup sequence chart troubleshoot repair No A B C D Go toPower Supply Trouble Isolation ...

Page 87: ...fore working around the fan Use extreme caution in working with the instrument when the cover is removed Install the fan safety shield Agilent Technologies P N 54801 00601 on the side of the chassis over the fan Failure to observe these precautions may result in injury 3 Connect the power cord and press the power switch on the front panel B Check the fan connections Verify that the fan mounted in ...

Page 88: ... on the scope interface cardA6 Ifthe 5Visatthescope interfacecardbutthefrontpanel LEDs do not come on the problem is the cable or the front panel keyboard A7 The hard disk drive HDD starts spinning at power on Listen at the top right rear of the instrument for a higher pitched whine this is the HDD coming up to speed Shortly after the disk comes up to speed you should hear a brief burst of clicks ...

Page 89: ...king 7 Attenuators click as solenoids are preset to known states Front panel LEDs change to a normal operating pattern Both screens go blank momentarily The attenuators click This is louder than the HDD clicking and comes from the front of the instrument The front panel LEDs change to a normal operating pattern For example the Trigger LEDs show only one trigger mode suchasEdge andone trigger coupl...

Page 90: ... display onscreen Display onscreen Power supply OK return to no display trouble isolation chart Check power supply resistances Resistance OK Override the Remote Inhibit Signal Power up OK Check Bias and Remote Inhibit Cabling Replace shorted assembly Replace Power Supply Yes No Power supply and display OK return to primary trouble isolation chart Yes No No Yes No Yes A B C D F E G ...

Page 91: ...these test points Table 5 2 shows the allowable range of power supply voltages Figure 5 3 Power Supply Voltage Test Locations A13 Table 5 2 Power Supply Voltage Limits B Turn off the power and measure the power supply resistances to ground to check for shorted supply lines You can probe the test points on A13 shown in figure 5 3 for this resistance check Table 5 3 shows the characteristic resistan...

Page 92: ...s Agilent Technologies P N 0698 3440 or 0757 0407 See figure 5 4 Figure 5 4 Power up Sense Resistor Connection Reconnect Assemblies and Cables Reconnectallassembliesaftertesting Theoscilloscopemusthaveallcablesconnectedforcorrectpower up If you want to test the power supply without any assemblies connected the 5 V supply must be loaded to 2 A Use two 5Ω 10W resistors between the 5 V output and gro...

Page 93: ...t Figure 5 5 Routing of 15 V Bias and Remote Inhibit Signals F Replace the power supply 1 If the 15 V bias is correct but the instrument will not power up with a 196 220Ω resistor replace the power supply Chapter 6 explains how to remove and replace the power supply 2 Re assemble the instrument and apply power G Check for the oscilloscope display onscreen 1 Youshouldseethe oscilloscopedisplay seef...

Page 94: ...ble W12 Use the table and figure to the right to check the power output at the connectors The 12 V and 12 V supplies come directly from the power supply and the 3 V and 3 V supplies are developed in three terminal regulators on the probe power control assembly Measure the voltages with respect to the ground terminal on the front panel located near the Aux Out BNC Donotattempttomeasurevoltages at p...

Page 95: ...ush a key the corresponding key symbol on the display should change from red to green 5 Turn each knob in both directions until you have turned all knobs When you turn a knob in one direction the corresponding knob symbol on the display should change from red to yellow When you then turn the knob in the other direction the knob symbol should change from yellow to green 6 When you are finished clic...

Page 96: ...N CONTAMINATION CAN CAUSE INTERMITTENT OPERATION Be careful not to contaminate the key side of the PC board or the keypads Dust and fingerprints on these parts may cause intermittent key operation 5 Set the cursor keyboard and keyboard assembly on an antistatic electrical insulated surface 6 Connect the cursor keyboard cable to the keyboard assembly Connect the keyboard cable to the scope interfac...

Page 97: ... test screen appears which shows a symbolic representation of all front panel LED indicators See figure 5 7 Figure 5 7 LED Test Screen 4 Push the Marker A left and right arrow keys to highlight each LED symbol in the test screen Verify that the corresponding LEDs on the front panel are the only ones illuminated Test by Rows You can use the Marker B arrow keys to test LEDs by row however in the eve...

Page 98: ...nterface board A6 acquisition cable W11 or acquisition board W13 Try troubleshooting the acquisition system first to verify correct behavior before replacing any assemblies If the voltages are correct but the LEDs do not light correctly replace the keyboard assembly If you find a problem with the Armed LED check pin 5 of W16 with the cable disconnected from the keyboard The voltage should be as fo...

Page 99: ...uch as the following appears on the external monitor AMI Atlas III PCI ISA AMD K6 tm 200 Checking NVRAM 16000 KB OK WAIT INS Pressed RUN SETUP Press F1 to Resume If the above message is displayed you can assume that the PC system board CPU and RAM are functioning correctly If the message is not displayed or there is no display remove the GPIB interface board and LAN interface board and try the tes...

Page 100: ...are on the top side of the connector The video signals are present during the system boot process before the backlights come on If the signals are not present suspect the display card If the signals are present and the backlights are on suspect the flat panel display as the problem Table 5 5 Video Signals Figure 5 8 Video Signals Pin Number Signal 1 2 3 3 V 3 5 6 NC 4 7 9 11 15 19 23 27 31 35 38 4...

Page 101: ...acklights inserted into the flat panel display The output voltage is approximately 300 450 Vrms 40 kHz measured differentially between the two wires when the backlight is illuminated The voltage is approximately 1 kV before the backlight tube is illuminated The outputs are controlled by the input Notice that input pin 5 goes low to enable the output voltage These pins can be reached at J1 on the S...

Page 102: ...Bootblock Recovery Codes The bootblock recovery checkpoint codes are listed in order of execution Code Description E0h The onboard floppy controller if available is initialized Next beginning the base 512 KB memory test E1h Initializing the interrupt vector table next E2h Initializing the DMA and Interrupt controllers next E6h Enabling the floppy drive controller and Timer IRQs Enabling internal c...

Page 103: ...CMOSRAMiftheInitialize CMOS RAM in every boot AMIBIOS POST option was set in AMIBCP or the key was pressed 12h Next disabling DMA controllers 1 and 2 and interrupt controllers 1 and 2 13h The video display has been disabled Port B has been initialized Next initializing the chipset 14h The 8254 timer set will begin next 19h The 8254 timer test is over Starting the memory refresh test next 1Ah The m...

Page 104: ... and finding the total system memory size next 46h The memory wraparound test is done Memory size calculation has been done Writing patterns to test memory next 47h The memory pattern has been written to extended memory Writing patterns to the base 640 KB memory test 48h Patterns written in base memory Determining the amount of memory below 1 MB next 49h The amount of memory below 1 MB has been fo...

Page 105: ...ng for a memory size mismatch with CMOS RAM data next 85h The memory size check is done Displaying a soft error and checking for a password or bypassing WINBIOS Setup next 86h The password was checked Performing any required programming before WINBIOS Setup next 87h The programming before WINBIOS Setup has completed Uncompressing the WINBIOS Setup code and executing the AMIBIOS Setup or WINBIOS Se...

Page 106: ...e keyboard typematic rate is set Programming the memory wait states next A5h Memory waitstateprogrammingisover Clearingthescreenandenablingparity and theNMInext A7h NMI and parity enabled Performing any initialization required before passing control to the adapter ROM at E000 next A8h Initialization before passing control to the adapter ROM at E000h completed Passing control to the adapter ROM a E...

Page 107: ...7 motherboard 100 MHz CPU and 1 44 Mbyte floppy drive Infiniium oscilloscopes with serial numbers US37349999 and below1 came equipped with the AMI Series 727 motherboard and AMD K5 P133 100 MHz processors Thismotherboardliststhemessage BIOSRelease727XXXXXX whentheBIOSsetupisentered See To configure the AMI Series 727 WINBIOS Parameters for the BIOS setup procedure See Configuring the AMI Series 72...

Page 108: ...t accordingly This motherboard lists the message BIOS Release 757XXXXXX and 64XXXKB of RAM when the BIOS setup is entered See To configure the AMI Series 757 WINBIOS Parameters with 120 Mbyte floppy drive for the appropriate BIOS setup procedure See Configuring the AMI Series 757 Motherboard for 300 MHz CPU for jumper configuration details to match the K6 300 or K6 2 300 processor The respective m...

Page 109: ... Service Note 54810A 06 This servicenote givesdetailed information forupgradingto64 MB RAM upgrading to revision 2 51 or newer code and enabling power management in the BIOS This combination of upgrades and power management settings enable the instrument to load the application into memory at powerup and allowstheharddriveto powerdown Thisprovidesa quickresponsefrom theoscilloscopecontrolsduring u...

Page 110: ...ng the AMI Series 727 Motherboard Jumpers There are several jumpers on the motherboard that must be configured to the correct settings for the AMD K5 PR133 100 MHz microprocessor Figure 5 9 shows the series 727 motherboard Figure 5 9 Series 727 Motherboard Jumpers J46 J21 J11 J12 J2 J24 J25 J37 J39 ...

Page 111: ...o configure these jumpers correctly may damage the CPU To configure the jumpers set J2 J11 J12 and J21 as shown in the following figure Note that all pairs of pins on J12 and J21 are shorted all pins on J2 are open The processor must be configured for a 100 MHz clock speed by setting jumpers J24 J25 J37 and J39 as shown in the following figure Note that the pins on J25 are shorted and the pins on ...

Page 112: ...text on the external VGA monitor should read as follows BIOS Release 727XXXXXX NVRAM Ignored 16000 KB OK WAIT INS Pressed RUN SETUP Press F1 to Resume If you see the word ERROR in the last few lines or the oscilloscope does not appear to be functioning check the motherboard jumper settings and the ribbon cable connectors Proceed to the Primary Trouble Isolation flowchart Otherwise continue with th...

Page 113: ...loppy A block then exit Standard Setup f Select Advanced Setup then select System Keyboard Select Absent not installed g Under Advanced Setup scroll down the list to find and select External Cache Select Disabled then exit Advanced Setup h Double click on Power Management i Click Power Management APM and select Enabled j Click Hard Disk Power Down Mode and select Suspend k Click Hard disk Time Out...

Page 114: ...not recheck your steps in the above procedure If all the settings are correct return to the Primary Troubleshooting Procedure Configuration Item Setting Load Optimal Defaults YES Peripheral Setup OnBoard Primary Secondary IDE Primary Detect IDE Utility Hard drive Primary Master Data Standard Setup Date Time Enter current values Standard Setup Floppy Drive A 1 44 MB 3 1 2 Advanced Setup System Keyb...

Page 115: ... Series 757 Motherboard for 200 MHz CPU There are several jumpers on the motherboard that must be configured to the correct settings for the AMD K6 200 MHz microprocessor Figure 5 10 shows the series 757 Rev C motherboard Figure 5 10 Series 757 Rev C Motherboard Jumpers VRM Connector J5 J6 J7 J8 J13 J14 J15 ...

Page 116: ...r to the motherboard Failure to configure these jumpers correctly may damage the CPU To configure the jumpers set J5 J6 J7 J8 and J14 as shown in the following figure Note that the pairs of pins on J6 and J7 are shorted the pairs of pins on J5 and J8 are open and all pins on J14 are open The processor must be configured for a 66 33 MHz PCI bus clock speed by shorting pins 1 and 2 on J15 as shown i...

Page 117: ...s F2 to load default values and continue DO NOT press F2 to load the default values since some units will not boot with default values AMI Atlas III PCI ISA BIOS Release 757XXXXXX AMD K6 tm 200 Checking NVRAM XXXXXX KB OK WAIT INS Pressed RUN SETUP Press F1 to Run SETUP Press F2 to load default values and continue If you see the word ERROR in the last few lines or the oscilloscope does not appear ...

Page 118: ...eral Setup by clicking on the box in the upper left corner i Double click on Power Management j Click Power Management APM and select Enabled k Click Hard Disk Power Down Mode and select Suspend l Click Hard disk Time Out Minute and select 15 min m Exit Power Management Setup n Hold down the Insert key on the external keyboard while exiting the Setup program and save the changes you have made Cont...

Page 119: ...nfiguration Table 5 8 Series 757 System BIOS Settings with 1 44 Mbyte floppy drive These configurations are only for instruments with 64 Mb or more of RAM The oscilloscope should now reboot load Windows 95 and come up with the scope display If it does not recheck your steps in the above procedure If all the settings are correct return to the Primary Troubleshooting Procedure Configuration Item Set...

Page 120: ...eries 757 Motherboard for 300 MHz CPU There are several jumpers on the motherboard that must be configured to the correct settings for the AMD K6 300 MHz microprocessor Figure 5 11 shows the series 757 Rev D motherboard Figure 5 11 Series 757 Rev D Motherboard Jumpers VRM Connector J5 J6 J7 J8 J16 J13 J14 J15 ...

Page 121: ... and applying power to the motherboard Failure to configure these jumpers correctly may damage the CPU To configure the jumpers set J5 J6 J7 J8 J14 and J16 as shown in the following figure Note that the pairs of pins on J6 J7 J8 and J16 are shorted the pairs of pins on J5 are open and all pins on J14 are open The processor must be configured for a 66 33 MHz PCI bus clock speed by shorting pins 1 a...

Page 122: ...s F2 to load default values and continue DO NOT press F2 to load the default values since some units will not boot with default values AMI Atlas III PCI ISA BIOS Release 757XXXXXX AMD K6 tm 200 Checking NVRAM 65536 KB OK WAIT INS Pressed RUN SETUP Press F1 to Run SETUP Press F2 to load default values and continue If you see the word ERROR in the last few lines or the oscilloscope does not appear t...

Page 123: ...p j Double click PCI PnP Setup then scroll down to select IRQ9 Select ISA then exit PCI PnP Setup k Double click on Peripheral Setup then select OnBoard Primary Secondary IDE Select Primary then exit Peripheral Setup by clicking on the box in the upper left corner l Double click on Power Management m Click Power Management APM and select Enabled n Click Hard Disk Power Down Mode and select Suspend...

Page 124: ...9 Series 757 System BIOS Settings with 120 Mbyte floppy drive The oscilloscope should now reboot load Windows 95 and come up with the scope display If it does not recheck your steps in the above procedure If all the settings are correct return to the Primary Troubleshooting Procedure Configuration Item Setting Load Optimal Defaults YES Standard Setup Date Time Enter current values Standard Setup F...

Page 125: ...et as follows for the AMD K6 2 400 MHz processors 1 Set the PWR Power supply type select jumper to 1 2 2 Set S1 CPU voltage select for CPU core voltage see core voltage on processor top 2 2 V Core S1 1 S1 2 S1 3 S1 4 S1 5 Off Off Off Off On S2 System Frequency select Switches S2 1 through S2 3 set the ratio of CPU Frequency Bus Frequency This is set to 4X for the K6 2 400 MHz processor Ratio S2 1 ...

Page 126: ... message above to enter the BIOS setup menu 6 Using the keyboard down arrow key down to LOAD SETUP DEFAULTS and type Y to load the setup defaults 7 Go to the standard CMOS setup and verify or change these settings When you are finished press Esc to exit the menu 8 Go to the BIOS Features Setup and verify or change these settings When you are finished press Esc to exit the menu 9 Go to the Chipset ...

Page 127: ... each channel using the labels attached to each attenuator If you later exchange the acquisition assembly Agilent Technologies uses this information to determine when to replace the attenuators to insure quality of future exchange assemblies Determining the Acquisition Contact Closure Count 1 Select Self Test from the Utilities menu 2 Check the Service Extensions check box 3 Select Attenuator Cont...

Page 128: ...Chapter 5 Troubleshooting To troubleshoot the acquisition system 5 50 Acquisition Trouble Isolation 1 of 4 ...

Page 129: ...Chapter 5 Troubleshooting To troubleshoot the acquisition system 5 51 Acquisition Trouble Isolation 2 of 4 ...

Page 130: ...Chapter 5 Troubleshooting To troubleshoot the acquisition system 5 52 Acquisition Trouble Isolation 3 of 4 ...

Page 131: ...replace one or more attenuators you must reset the attenuator contact counter for the affected channel s to zero This enables continued monitoring of the repaired channel If the Gain test passes run the Extended Service test for the A to D Converter If any of the channels pass the extended service A to D Converter test you can swap an A to D hybrid from a known good channel to a suspected failing ...

Page 132: ...s test fails Before you replace the acquisition assembly withafactoryrebuiltexchangeassembly record the contact closureinformationforeach channel onto the labels attached to each attenuator Agilent Technologies uses this to determine when to replace the attenuators to insure quality of future exchange assemblies G Logic Level failed Replace the acquisition assembly when this test fails Before you ...

Page 133: ...ion for any set of contacts for a channel reaches two million closures this test displays a warning message This warning is not an indication of attenuator failure This warning does advise you that the attenuator is near the mean of its range of reliable usage You should plan your maintenance strategy based on this contact closure information and your application For example in an automated test a...

Page 134: ...rs can cause a variety of symptoms Wrong input resistance Low bandwidth slow rise time Signal distortion Calibration failures Self test failures Firmware Calibration should also be done after attenuator replacement see chapter 4 Calibrating and Adjusting Attenuator Click Test The solenoids for the passive attenuators can be heard switching when the vertical sensitivity is changed However the gain ...

Page 135: ...before the reliability of the contacts begins to degrade This provides useful preventative maintenanceinformationforkeeping theInfiniiumoscilloscope in peak measurement condition If you replace or permanently swap an attenuator you may need to reset the attenuator counter See To reset the attenuator contact counter on page 6 30 Attenuator Connectivity Test The attenuator assembly scales incoming s...

Page 136: ...ack in original channel No No Perform Click Test on all channels Do channels fail Swap failing channel attenuator assembly with known good assembly Perform Click Test on all channels Does same assembly fail Yes Yes No No Run Self Calibration Write attenuator contact information on attenuator labels of defective assembly Yes Set attenuator contact counter to zero Exchange or replace acquisition ass...

Page 137: ... the current version number for the scope software and on line information system software This information may be useful when contacting Agilent Technologies for further service information See figure 5 13 Figure 5 13 About Infiniium Information Enable the Graphical Interface The graphical interface must be enabled to select this command ...

Page 138: ...5 60 ...

Page 139: ... and replace the GPIB interface board 6 16 To remove and replace the scope interface board and SVGA display board 6 17 To separate the scope interface board and SVGA display board 6 18 To remove and replace the Option 200 sound card 6 19 To remove and replace the hard disk drive 6 20 To remove and replace the floppy disk drive 6 21 To remove and replace the motherboard 6 21 To remove and replace t...

Page 140: ... following tools are required for these procedures Torx drivers T8 T10 T15 Socket wrench 5 8 inch Medium size 3 16 in flat blade screwdriver Nut Drivers 3 16 in 9 32 in 5 16 in 5 8 in Torque driver 0 34 Nm 3 in lbs 5 mm or 3 16 in hex drive Torque driver 0 34 Nm 3 in lbs Torx T6 drive CAUTION REMOVE POWER BEFORE REMOVING OR REPLACING ASSEMBLIES Do not remove or replace any circuit board assemblies...

Page 141: ...cations 2 Remove all accessories from the instrument Accessories include all cables Do not include accessories unless they are associated with the failure symptoms 3 Protect the instrument by wrapping it in plastic or heavy paper 4 Pack the instrument in foam or other shock absorbing material and place it in a strong shipping container You can use the original shipping materials or order materials...

Page 142: ...ve the four Torx T15 screws that secure the rear feet two in each foot 6 Remove the four Torx T15 screws that secure the cover to the chassis 7 Set the unit on its side Carefully slide the cabinet off of the frame by pulling the front panel and the cover away from each other 8 To replace the cover reverse the above procedure Be sure to keep ribbon cables out of the way when replacing the cover par...

Page 143: ...all flat blade screwdriver Do not force the retainer it should remain attached to the body of the socket 2 Gently pull the flex cable out of the connector Figure 6 2 Disconnecting a Mylar Ribbon Cable To reconnect the cable 1 Ensure that the cable retainer is up then insert the ribbon cable into the socket making sure to observe polarity of the cable with respect to the connector 2 Push the ends o...

Page 144: ...cover 2 Remove the AutoProbe connector assembly the subpanel and the probe connector assembly that fits around the front panel BNC connectors by doing the following a Disconnect the mylar ribbon cable W13 from the Probe Power and Control Board A11 See To disconnect and connect Mylar flex cables in this chapter Figure 6 4 Disconnecting W13 b Locate the access hole in the front panel assembly below ...

Page 145: ...e assembly faceplate away from the front panel assembly Figure 6 6 Pushing Out the AutoProbe Faceplate CAUTION AVOID DAMAGE TO THE RIBBON CABLE AND FACEPLATE Do not pry around the edge of the assembly Doing so may damage the ribbon cable or faceplate d Finish removing the AutoProbe assembly by feeding the mylar ribbon cable through the front panel slot 3 To replace the AutoProbe assembly reverse t...

Page 146: ... mylar flex cable W12 from the probe power and control assembly 4 Remove the two Torx T10 screws securing the probe power and control assembly to the front panel chassis 5 Lift the probe power and control assembly out and away from the chassis 6 To replace the probe power and control assembly reverse the above procedure When inserting the assembly be sure the two tabs on the circuit board engage t...

Page 147: ...u can either stand the chassis on end or turn it over to gain access to both cables 3 Disconnect the backlight primary cable W17 from the side of the backlight inverter board 4 Remove the 2 Torx T10 screws that secure the backlight inverter board to the chassis 5 Lift the backlight inverter board out through the top of the chassis 6 To replace the backlight inverter board reverse the assembly proc...

Page 148: ...W18 from J10 and the black Comp wire W19 from J4 Push them to the side These cables are located behind the Aux Trigger Input BNC connector on the Acquisition board Figure 6 10 SMB Cable W18 and Comp Wire W19 5 Disconnect all the cables to the front panel assembly including the backlight cables flat panel display driver cable W20 and keyboard cable W16 ...

Page 149: ...ly Figure 6 12 Front Panel Side Screws 7 Remove the 2 Torx T10 screws that secure the chassis front to the front panel assembly 8 Pull the front panel assembly away from the chassis being careful to feed the ribbon cables W16 and W20 out through the slot in the front of the chassis 9 To replace the front panel assembly reverse the above procedure Ensure that you observe polarity designations when ...

Page 150: ... chassis 3 Remove the ten Torx T10 screws that secure the front panel cover plate to the front casting Figure 6 13 Front Panel Cover Plate Screws 4 Carefully feed the front panel keyboard cable W16 and the flat panel display driver cable W20 through the cable access hole while separating the front panel cover plate from the front casting 5 To remove the main keyboard disconnect the cursor keyboard...

Page 151: ...ble the front panel assembly reverse the above procedure The cursor keyboard has holes that fit over locating pins in the front panel casting CAUTION PREVENT GLASS BREAKAGE Use care when handling the Lens Glass and the FPD monitor to prevent glass breakage Inspect the inside surfaces of the Lens Glass and the Display Monitor closely for dust smudges and finger prints Viewing these with line of sig...

Page 152: ...mbly These cables are located behind the Aux Trigger Input BNC connector See figure 6 10 5 Disconnect the following cables from the inside edge of the Acquisition assembly Power supply control cable W2 Probe control cable W12 Auxiliary power supply cable W4 5 V power supply cable W3 PC power cable W5 Line sync cable W6 Acquisition cable W11 Fan cable W21 These cables are attached to J2 J3 J5 and J...

Page 153: ...emoval procedures 1 Disconnect the power cable and remove the cover 2 Remove the Torx T15 screw that secures the LAN board to the rear of the chassis 3 Pull the board up to disengage it from the motherboard then up and out of the chassis CAUTION BE CAREFUL TO NOT SNAG THE CABLE Be careful not to snag the acquisition cable W11 4 To replace the board reverse the removal procedure Figure 6 17 Removin...

Page 154: ...he cover 2 Remove the Torx T15 screw that secures the GPIB board to the rear of the chassis 3 Pull the board up to disengage it from the motherboard then up and out of the chassis CAUTION BE CAREFUL TO NOT SNAG THE CABLE Be careful not to snag the acquisition cable W11 4 To replace the board reverse the removal procedure If you are replacing the board with a new one ensure that the new board has t...

Page 155: ...cables from the SVGA display board Display board to floppy cable W8 Display board to hard drive cable W10 Motherboard floppy cable W7 Motherboard hard drive cable W9 Backlight primary cable W17 Display video cable W20 4 Remove the two Torx T15 screws that secure the scope interface and SVGA display boards to the chassis These screws are at the rear of the chassis Figure 6 19 Removing the Scope Int...

Page 156: ...he card cage 2 Remove the display board jumper cable W14 3 Use a small pair of pliers to gently compress each of the four studs at the back of the scope interface board until the stud slips through the board Later versions do not use the four studs skip this step See figure 6 19 CAUTION AVOID DAMAGE TO STUDS Be careful not to scratch the circuit board Also do not compress the fingers of the studs ...

Page 157: ...replace the sound card 1 Disconnect the power cable and remove the cover 2 Remove the Torx T15 screw that secures the sound card to the rear of the chassis 3 Pull the card up to disengage it from the motherboard then up and out of the chassis CAUTION AVOID DAMAGE TO CABLES Be careful to not snag any of the cables 4 To replace the card reverse the removal procedure ...

Page 158: ...ews that secure the HDD to the bracket CAUTION DO NOT LET THE DISK DRIVE FALL Support the drive while removing the screws so that the drive does not fall 5 Lift the hard disk out of the chassis Store the disk in a safe place where it will not be bumped or dropped 6 To replace the hard disk drive reverse the above procedure Ensure that you reconnect the disk cable with the correct polarity CAUTION ...

Page 159: ...he above procedure To remove and replace the motherboard Use the following procedure to remove and replace the motherboard assembly When necessary refer to other removal procedures CAUTION REPLACE MOTHERBOARD WITH THE SAME TYPE Be sure to order the correct motherboard and replace the motherboard with the same type 1 Disconnect the power cable and remove the cover 2 Disconnect the floppy disk drive...

Page 160: ...erboard assembly reverse the above procedure Note the following Replacement motherboards come without a CPU or RAM SIMMs Transfer these from the old motherboard using the procedures in this chapter Be sure to take appropriate antistatic measures Newer motherboards may require a new CPU and the installation of a Voltage Regulator Module VRM RAM SIMMs may be transferred from the old motherboard The ...

Page 161: ... installation Use the Windows 95 drivers when available Obtain the 548xx driver disk by contacting the Agilent factory When Windows 95 finds Unknown PCI card and displays the message Insert Agilent Technologies 548XX Scope Installation Disk insert the floppy disk select drive A and click OK to load the oscilloscope driver The instrument will reboot several times to recognize all of the hardware 14...

Page 162: ...le W6 from the rear of the supply 4 Remove the Torx T15 screw that secures the power supply ground wire to the chassis Figure 6 23 Removing Power Supply Cables 5 Remove the two Torx T10 screws that secure the front of the supply to the chassis 6 Remove the two Torx T10 screws that secure the power supply to the back of the chassis 7 Lift the supply up and out of the chassis 8 To replace the supply...

Page 163: ...w the center pin using a 1 Posidrive screwdriver You may need to apply upward pressure at the point of the pin with a small screwdriver After removing the center pin compress the fastener body and push it up and out of the fan and chassis Be sure to support the fan before removing the last fastener Alternatively you can cut the fastener at the outside of the chassis with a pair of diagonal cutters...

Page 164: ...he motherboard 3 Pull the CPU socket release lever laterally away from the socket to disengage the lever from the locking tab Then rotate the lever upward to release the CPU assembly from the socket Figure 6 25 Removing the CPU 4 Carefully lift the CPU assembly out of the socket Place it into antistatic IC foam or another protective carrier 5 To replace the CPU reverse the assembly procedure Be su...

Page 165: ... an AMI motherboard 1 There are four SIMM sockets Remove SIMMs starting with the SIMM closest to the chassis side panel To remove each SIMM push the retaining clips at each end to the side then tilt the SIMM forward and pull it out Figure 6 26 Removing RAM SIMMs 2 ToreplaceSIMMs reversethe assembly procedure Install SIMMsintheoppositeorder of removal When the SIMM is correctly installed the locati...

Page 166: ...SO hybrids The heatsinks must be removed first to allow you to disconnect the semi rigid cables from the hybrid end before disconnecting the cables from the attenuator end 3 Carefully disconnect the semi rigid cables from the A D FISO hybrids then disconnect from the attenuator ends 4 Carefully lift up on the rear of the attenuator boards near the two mating connectors to remove from the acquisiti...

Page 167: ...replace an attenuator 6 29 Figure 6 27 Removing an Attenuator If You Permanently Replace Parts When you replace acquisition system components you should rerun the self calibration routines prior to performance verification or use of the instrument ...

Page 168: ... until the message Starting Windows 9X appears on the screen 4 The oscilloscope will boot into the Windows operating system 5 Press Control Esc on the keyboard to access the Windows Start menu 6 Open the Programs group and click the Infiniium Scope icon 7 When the oscilloscope application comes up click the mouse icon in the upper right corner of the screen 8 Click the Utility pull down menu then ...

Page 169: ...l be displayed Figure 6 29 Attenuator Relay Actuations Setup 11 In the Attenuator Channel box select the channel you are changing 12 Under Set Value enter the corrected attenuator value using the keyboard or the drop down keypad then press the button labeled Apply Set Value to Actuation Count 13 Repeat for each channel you need to change ...

Page 170: ...n hybrid To understand the sequence of parts use the accompanying illustration To remove the acquisition hybrid 1 Disconnect the power cable and remove the cover 2 Use a T 6 Torx driver to remove two screws that secure the heatsink spring then remove the heatsink 3 Disconnect the semi rigid cables from the A D FISO hybrids then disconnect from the attenuator ends 4 First use a T 6 Torx driver to r...

Page 171: ...5 Use a 5 mm 3 16 in torque driver set to 0 34 Nm 3 in lbs to tighten the standoffs in the following sequence a Tighten any standoff to specifications b Tighten the standoff directly opposite the first one to specifications c Tighten the remaining two screws to specifications using the Torx T6 torque driver set to 0 34 Nm 3 in lbs 6 Connect the semi rigid cables to the attenuator ends then connect...

Page 172: ...moving the acquisition board The key is to apply very little pressure while removing the connector screws Too much pressure will push the plate away from the bottom of the board If the plate falls from the board you will have to remove the acquisition board to re install the connector If the plate does not fall from the board you will have saved some time and work To replace a connector 1 Remove t...

Page 173: ...placeable Parts 7 2 Listed Parts 7 2 Unlisted Parts 7 2 Direct Mail Order System 7 2 Exchange Assemblies 7 2 Power Cables and Plug Configurations 7 3 Exploded Views 7 4 Replaceable Parts List 7 15 Replaceable Parts ...

Page 174: ...gilent Technologies Sales Office when the orders require billing and invoicing Prepaid transportation There is a small handling charge for each order No invoices In order for Agilent Technologies to provide these advantages please send a check or money order with each order Mail order forms and specific ordering information are available through your local Agilent Technologies Sales Office Address...

Page 175: ...tions Opt 903 125V 8120 1378 8120 1521 8120 1992 Straight NEMA5 15P 90 Straight Medical UL544 90 228 90 228 96 244 Jade Gray Jade Gray Black United States Canada Mexico Philippines Taiwan Opt 904 250V 8120 0698 Straight NEMA6 15P 90 228 Black United States Canada Opt 905 250 V 8120 1396 8120 1625 CEE22 V1 System Cabinet Use 250V 30 76 96 244 Jade Gray For interconnecting system components and peri...

Page 176: ...ed Views Front Frame and Front Panel MP54 MP51 MP16 MP50 H2 H9 MP8 MP4 MP1 MP3 H18 H20 MP17 W16 W20 A2A1 H7 MP56 A7 W13 MP53 A2 MP61 MP62 or MP63 MP15 and MP49 A8 MP64 H4 W19 W18 H17 H15 H21 H14 A17 Old version H30 A17 New version A16 MP69 A17 New version ...

Page 177: ...Chapter 7 Replaceable Parts Exploded Views 7 5 Fan and Acquisition Assembly A11 B1 B3 W2 A13A1 W4 W3 W5 H22 W17 A3 H8 MP60 H1 H2 W6 OptionalFanSafetyShield A13A2 W11 W21 A13A5 8 A13 H2 H28 H29 H27 ...

Page 178: ...Chapter 7 Replaceable Parts Exploded Views 7 6 Power Supply and PC Motherboard A5 MP60 H3 H11 MP55 H4 A6 H12 A1 H2 H2 A4 W4 W2 W3 A10 A9 MP57 H25 H24 H2 See Floppy Drive Version Configuration ...

Page 179: ... Replaceable Parts Exploded Views 7 7 AMI Series 727 Atlas PCI II Motherboard for PC Motherboard Configuration 1 W14 H23 W24 25 A6 W9 W22 A4A2 A3 RAM B2 A5 W20 W17 W8 W10 W9 W7 A14 W16 W7 W23 W11 W5 A15 A4A1 A4 ...

Page 180: ...Views 7 8 AMI Series 757 Rev C and Rev D Atlas PCI III Motherboard for PC Motherboard Configurations 2 3 and 4 W14 H23 W24 25 A6 W9 W22 A4A2 A3 RAM B2 A5 W20 W17 W8 W10 W9 W7 A14 W16 W7 W23 W11 W5 A15 A4A4 A4 A4A1 A19 Option 200 not shown ...

Page 181: ...Chapter 7 Replaceable Parts Exploded Views 7 9 1 44 Mbyte Floppy Drive Configuration for PC Motherboard Configurations 1 2 and 3 ...

Page 182: ...Chapter 7 Replaceable Parts Exploded Views 7 10 120 Mbyte Floppy Drive Configuration for PC Motherboard Configuration 4 ...

Page 183: ...Chapter 7 Replaceable Parts Exploded Views 7 11 FIC VA 503A Motherboard for PC Motherboard Configuration 5 A15 A19 A14 B2 A4A1 A4 H23 A4A2 W9 W23 W22 W27 W24 25 W5 A6 A5 W16 W11 W14 W20 W17 ...

Page 184: ...Chapter 7 Replaceable Parts Exploded Views 7 12 120 Mbyte Floppy Drive Configuration with FIC Motherboard for PC Motherboard Configuration 5 ...

Page 185: ...Chapter 7 Replaceable Parts Exploded Views 7 13 Sleeve and Accessory Pouch MP20 H10 MP13 H19 H26 MP14 MP52 MP38 MP19 MP12 MP19 MP70 MP72 MP70 Old version ...

Page 186: ...Chapter 7 Replaceable Parts Exploded Views 7 14 Attenuator Assembly ...

Page 187: ... are generally those that take the physical wear and tear of use Internal parts in several categories Each category is in alphanumeric order by reference designation Replacing these parts generally requires opening the cabinet The information given for each part consists of the following Reference designation Agilent Technologies part number Total quantity QTY in instrument or on assembly The tota...

Page 188: ...Agilent 548 35A 45A 46A 1 MΩ 12pF 100V Max MP17 54845 94305 1 LABEL LOGO Infiniium 1 5 GHz 8 GSa s for 54845A MP17 54835 94302 1 LABEL LOGO Infiniium 1 0 GHz 4 GSa s for 54835A MP17 54846 94305 1 LABEL LOGO Infiniium 2 25 GHz 8 GSa s for 54846A MP19 5041 9167 2 FOOT BOTTOM Old Version MP19 5041 9168 2 FOOT BOTTOM NON SKID Old Version MP20 5042 1753 2 FOOT REAR MP21 C3751 60201 1 MOUSE MP22 54810 8...

Page 189: ...rv kit w Win98 Cert compatible only w AMI motherboards A10 0950 2782 1 3 5 Floppy Disk Drive 1 44 MByte A15 0950 2064 1 Ethernet Adapter Card ISA MP60 54801 60102 1 Chassis assembly compatible only w AMI motherboard configurations W7 54801 61610 1 Cable Motherboard floppy port to display board W8 54801 61625 1 Cable Display board to floppy drive W10 54801 61636 1 Cable Display board to 2 5 HDD W22...

Page 190: ...rial and parallel cables PC Motherboard Configuration 5 FIC Motherboard w 120 MByte Floppy Drive serial prefix range US3949 and above with rear panel label VIN 03X 2 A4 54810 66534 1 PC Motherboard FIC VA 503A A4A1 1821 4776 1 Microprocessor AMD K6 2 400MHz A4A2 1818 8073 1 DRAM DIMM 16MX32 64 MB DIMM A9 54810 83520 1 2 5 Hard Drv w software installed compatible only w FIC motherboard configuratio...

Page 191: ...herboard Configurations earlier in this table A19 See PC Motherboard Configurations earlier in this table Attenuator Assemblies And A D Hybrids P O Acquisition Board A13A1 A13A2 54845 66502 2 2 CH ATTENUATOR ASSY 54835A and 54845A A13A1 A13A2 54846 66502 2 2 CH ATTENUATOR ASSY 54846A A13A5 A13A8 1NB7 8348 4 A D CONVERTER HYBRID A13MP1 54803 04103 4 BOTTOM PLATE A13MP2 54803 04102 4 TOP PLATE A13MP...

Page 192: ...03 01705 1 SLEEVE CABINET 2 FAN MP53 54801 04104 1 FRONT PANEL ASSY INSIDE COVER MP54 54801 04102 1 AUTOPROBE PANEL SNAP IN Older style MP54 54801 24701 1 AUTOPROBE PANEL Newer style MP55 54801 04103 1 KEYBOARD CONNECTOR PLATE REAR PANEL MP56 54801 40502 1 FRONT FRAME MP57 54801 01208 1 HARD DRIVE BRACKET 2 5 HD MP60 See PC Motherboard Configurations earlier in this table MP61 54801 88001 1 LENS D...

Page 193: ... POWER CONTROL CABLE W13 54801 61623 1 FLEX CIRCUIT PROBE INTERFACE Older style W13 54801 61642 1 CABLE AUTOPROBE INTERFACE TO AUTOPROBE BOARD Newer style W14 54801 61624 1 DISPLAY BD JUMPER W15 54801 61626 1 KEYBOARD INTERCONNECT W16 54801 61628 1 KEYBOARD CABLE W17 54801 61635 1 BACKLIGHT CABLE W18 54801 61638 1 CABLE 50 Ω W19 54801 61634 1 PROBE COMP CABLE W20 54801 61609 1 DISPLAY CABLE W21 54...

Page 194: ...7 22 ...

Page 195: ...on System 8 4 Front Panel 8 4 Disk Drives 8 4 Attenuators 8 4 Motherboard 8 4 SVGA Display Card 8 5 GPIB Interface Card 8 5 Probe Power and Control 8 5 Attenuator Theory 8 7 Acquisition Theory 8 7 Acquisition Board 8 7 Acquisition Modes 8 9 Scope Interface Board 8 9 Theory of Operation ...

Page 196: ...Chapter 8 Theory of Operation 8 2 Instrument Block Diagram Shown for Original Configuration w 1 44 MByte Floppy Drive ...

Page 197: ...ger input and auxiliary output AutoProbe interface for probe power and probe control A connection for probe compensation The rear panel provides several connections The line power input An GPIB connector for connection to an instrument controller An RS 232 connection A parallel printer connection VGA monitor connection Mouse and keyboard connections The instrument has several assemblies and four a...

Page 198: ...hrough a Remote Inhibit sense line that is routed to the power supply When closed there is an impedance of approximately 196 Ω to ground from the Remote Inhibit sense line the power supply detects this and turns on or off as required Disk Drives The flexible disk drive is 1 44 Mbyte MS DOS compatible It is located on the front panel The disk drive can be used to load a new oscilloscope operating s...

Page 199: ...s the bus to the motherboard system controller allowing the system controller to receive and process GPIB commands and return data to the bus The circuit consists of three main components TheGPIBcontroller provides aninterface betweenthemicroprocessor system and the GPIB in accordance with IEEE 488 standards An 8 bit data buffer and 8 bit control line buffer connect the GPIB controller to the GPIB...

Page 200: ...Chapter 8 Theory of Operation Block Level Theory 8 6 Acquisition Block Diagram CHANNEL 1 2 TIME BASE TRIGGER ...

Page 201: ...ustment After the passive attenuators the signal is split into high frequency and low frequency components Low frequency components are amplified on the main assembly where they are combined with the offset voltage The ac coupling is implemented in the low frequency amplifier The high and low frequency components of the signal are recombined and applied to the input FET of the impedance converter ...

Page 202: ...base IC sends a signal to the trigger multiplexer ARM indicating it is ready for the trigger event When the trigger condition is satisfied the trigger multiplexer sends a signal back to the time base SYSTRIG The time base IC then starts the post trigger delay counter When the countdown reaches zero the sample clocks are stopped and the CPU is signaled that the acquisition is complete The Interpola...

Page 203: ...data lines 10 address lines a R W line and read and write strobes A second read strobe is used for reading acquisition data the address latches are not used when this strobe is active Three lines are used to indicate run trigger and interpolator status two control lines are used for trigger control and clocking There are two address ranges on the acquisition board the first is used for reading acq...

Page 204: ...8 10 ...

Page 205: ...87 IEC 555 3 1982 A1 1990 EN 60555 3 1987 A1 1991 IEC 801 2 1991 EN 50082 1 1992 4 kV CD 8 kV AD IEC 801 3 1984 EN 50082 1 1992 3 V m 1kHz 80 AM 27 1000 MHz IEC 801 4 1988 EN 50082 1 1992 0 5 kV Sig Lines 1 kV Power Lines Supplementary Information The product herewith complies with the requirements of the Low Voltage Directive 73 23 EEC and the EMC Directive 89 336 EEC and carries the CE marking a...

Page 206: ...SPR 11 ISM Group 1 Class A equipment Immunity EN50082 1 Code1 Notes2 IEC 555 2 IEC 555 3 IEC 801 2 ESD 8kV AD IEC 801 3 Rad 3 V m IEC 801 4 EFT 0 5 kV 1kV 1 1 2 2 1 2 1 Performance Codes 1 PASS Normal operation no effect 2 PASS Temporary degradation self recoverable 3 PASS Temporary degradation operator intervention required 4 FAIL Not recoverable component damage 2 Notes SoundPressure Level Less ...

Page 207: ...nd specified type normal blow time delay etc should be used Donot use repaired fuses or short circuited fuseholders To do so could cause a shock or fire hazard Service instructions are for trained service personnel To avoid dangerous electric shock do not perform any service unless qualified to do so Do not attempt internal service or adjustment unless another person capable of rendering first aid...

Page 208: ...medies Agilent Technologies shall not be liable for any direct indirect special incidental or consequential damages whether based on contract tort or any other legal theory Assistance Product maintenance agreements and other customer assistance agreements are available for Agilent Technologies products For any assistance contact your nearest Agilent Technologies Sales Office Certification Agilent ...

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