Agilent Technologies 16900A Service Manual Download Page 105

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Theory of Operation

16900A, 16902A, and 16903A Service Guide

105

CPU subsystem

The CPU subsystem includes the following.

•

CPU board (more on

page 109

)

•

Disk drives (more on

page 109

)

•

Power (more on

page 109

)

PCI board

The following PCI board subsystem block diagram includes:

•

PCI bridge (more on

page 110

)

•

Module FPGA (more on

page 110

)

•

Video circuit (more on

page 110

)

•

PLD (more on

page 110

)

PLD

PCI SLOT

CONNECTOR

PCI to PCI

BRIDGE IC

MODULE FPGA

VIDEO IC

MIB BOARD

CONNECTOR

Rear panel

power switch

CPU COM2

connector

ROM

RAM

Summary of Contents for 16900A

Page 1: ...Agilent Technologies Agilent 16900A 16902A and 16903A Logic Analysis System Service Guide...

Page 2: ...y in accordance with the terms of such license Restricted Rights Legend If software is for use in the performance of a U S Government prime contract or sub contract Software is delivered and licensed...

Page 3: ...16902A or 16903A Logic Analysis System Table 1 Model comparisons Agilent model number 16900A 16902A 16903A Number of slots 6 6 3 Multiframe Pro Yes Yes No Display and resolution Uses external display...

Page 4: ...ervice strategy for this instrument is the replacement of defective assemblies This service guide contains information for finding a defective assembly by testing and servicing the 16900A 16902A 16903...

Page 5: ...for the instrument Chapter 5 Troubleshooting contains self tests and flowcharts for troubleshooting the instrument Chapter 7 Replaceable Parts lists replaceable parts shows exploded views and gives o...

Page 6: ...6 16900A 16902A and 16903A Service Guide...

Page 7: ...n History 5 1 General Information Electrical and Operating Environment Characteristics 12 Dimensions 13 2 Preparing for Use To inspect the logic analysis system 16 To apply power 16 To connect multipl...

Page 8: ...9 16903A Boot Up Troubleshooting Flowchart 36 Figure 10 16903A Application Troubleshooting Flowchart 37 To troubeshoot power problems 38 To check the power supply voltages 40 16900A and 16902A power s...

Page 9: ...bracket assembly 71 To remove and replace the touch screen display assembly 72 To remove and replace the keypad and keypad board 74 To remove and replace the On Off key 76 To remove and replace the p...

Page 10: ...Theory of Operation 104 16900A and 16902A Systems Block Level Theory 104 16900A 16902A CPU Subsystem 109 16900A 16902A PCI Board 110 16900A 16902A MIB Module Interface Board 111 16900A 16902A Input Ou...

Page 11: ...11 Agilent 16900A 16902A and 16903A Logic Analysis System Service Guide Agilent Technologies 1 General Information Electrical and Operating Environment Characteristics 12 Dimensions 13...

Page 12: ...ity 8 to 80 at 40 C 104 F Avoid sudden extreme temperature changes which could cause condensation on the circuit board Reliability is enhanced when operating the instrument within a noncondensing humi...

Page 13: ...er In The Trigger In connector is 5V Max pk and DC CAT I line isolated Clock In The Clock In connector is 5 5V Max pk and DC CAT I line isolated Dimensions The following figure provides dimensions for...

Page 14: ...14 16900A 16902A and 16903A Service Guide 1 General Information...

Page 15: ...903A Logic Analysis System Service Guide Agilent Technologies 2 Preparing for Use To inspect the logic analysis system 16 To apply power 16 To connect multiple frames 17 To install measurement modules...

Page 16: ...Technologies option without waiting for a claim settlement Contact information is located on page 4 To apply power 1 Connect the supplied power cord to the instrument and to the power source This inst...

Page 17: ...our instrument for Multiframe Pro configurations To get the most up to date installation guide Go to www agilent com Search for 16900A Logic Analysis System Look under Manuals and Guide To install mea...

Page 18: ...18 16900A 16902A and 16903A Service Guide 2 Preparing for Use...

Page 19: ...19 Agilent 16900A 16902A and 16903A Logic Analysis System Service Guide Agilent Technologies 3 Testing Performance Testing Performance 20 To perform the power up tests 21...

Page 20: ...in the frames are listed in the individual module Service Guides There are two types of self tests self tests that automatically run at powerup and self tests that you select on the screen For descrip...

Page 21: ...6900A only keyboard and mouse must be connected to the mainframe to observe the results of the power up tests 1 Exit all logic analysis sessions 2 Press the power switch for about 1 second and release...

Page 22: ...22 16900A 16902A and 16903A Service Guide 3 Testing Performance...

Page 23: ...23 Agilent 16900A 16902A and 16903A Logic Analysis System Service Guide Agilent Technologies 4 Calibrating and Adjusting Calibration Strategy 24 Calibrations and Adjustments for Modules 24...

Page 24: ...ysis systems do not require operational accuracy calibration Calibrations and Adjustments for Modules The individual modules that plug into the 16900 series mainframes may require calibration operatio...

Page 25: ...logies 5 Troubleshooting Troubleshooting 26 To use the16900A and 16902A flowcharts 26 To use the16903A flowcharts 32 To troubeshoot power problems 38 To check the power supply voltages 40 To run the s...

Page 26: ...t of defective assemblies This instrument can be returned to Agilent Technologies for all service work including troubleshooting Contact your nearest Agilent Technologies Sales Office for more details...

Page 27: ...ogin Start Attach keyboard mouse and power cord Attach the external display for 16900A Remove all user installed PCI cards see To remove replace optional interface cards in chapter 7 Apply power Does...

Page 28: ...he power supply voltages in this chapter Is there a power short Replace the damaged assembly Replace the MIB module interface board Yes The power down signal is asserted from CPU or MIB Check the CPU...

Page 29: ...1 internal display at 800x600 pixels 16 bit color depth Check all cables to the front panel assembly Check all cables to the CPU motherboard Ensure the PCI bridge board is fully seated Reseat as nece...

Page 30: ...e and is the power switch LED steady on Yes Does the instrument reach 7 in the boot sequence Yes Enter BIOS setup and reset to default Failed OS boot from hard drive Replace the CPU motherboard Check...

Page 31: ...logic analyzer application Replace the MIB board Replace the PCI bridge board Check all cables to front panel assembly Check all cables to CPU motherboard Check all cables to IO board Check PCI bridge...

Page 32: ...ve assemblies The flowcharts refer to other tests to help isolate the trouble The circled references on the charts indicate connections with the other flowcharts or other parts within the same flowcha...

Page 33: ...g to windows login Start Attach keyboard mouse and power cord Remove all user installed PCI cards see To remove replace optional interface cards in chapter 7 Apply power Does the logic analyzer applic...

Page 34: ...is asserted from CPU or MIB module interface board Check the CPU to MIB cables Check the AUX 5V power Go to To troubleshoot power problems in this chapter Replace the CPU Replace the MIB Check for a p...

Page 35: ...dows and check display settings Set the default to display 1 internal display at 800x600 pixels 16 bit color depth Check all cables to the front panel assembly Check all cables to the CPU motherboard...

Page 36: ...e and is the power LED steady on Yes Does the instrument reach 7 in the boot sequence Yes Enter BIOS setup and reset to default Failed OS boot from hard drive Replace the CPU motherboard Check the har...

Page 37: ...Flowchart 5 Reinstall the logic analyzer application Replace the MIB board Replace the PCI bridge board Check all cables to front panel assembly Check all cables to CPU motherboard Check all cables to...

Page 38: ...ure or overtemp If the system warns you it is powering down before it powers down it is a fan overtemp problem If it just powers down it is a power supply problem On the 16900A and 16902A frames if th...

Page 39: ...lace the cover on page 52 3 Ensure that the CPU power cable and reset cables are seated properly 4 Using a voltmeter ensure the AUX 5V power on the MIB measures 5V If it does not replace the power sup...

Page 40: ...Reconnect the instrument s power cord then apply power to the instrument 5 Using a digital volt meter measure the power supply dc voltages 6 Referring to the graphics that follow note problems with th...

Page 41: ...00 watt power supply voltages 16903A power supply The 700 watt power supply in the 16903A system is different than the one in the 16900 02A systems Use the following graphics when measuring the voltag...

Page 42: ...A and 16903A Service Guide 5 Troubleshooting To run the self tests 1 In the Agilent logic analyzer application click Help Self Test 2 In the Analysis System Self Test dialog double click on the test y...

Page 43: ...ing to disk CDs may not be readable in any CD ROM drive if it was not If a CD fails clean it by wiping it off with a clean dry rag and then try again If it continues to fail insert another CD to elimi...

Page 44: ...le if you are passing the system to another team or returning it to a rental company and you do not want any data left on it You will need to have a PS2 keyboard and PS2 mouse connected Follow the ins...

Page 45: ...replace the front panel assembly 64 To remove and replace the CD ROM Drive 65 To remove and replace the touch screen controller board 66 To remove and replace the backlight inverter board 68 To remove...

Page 46: ...TORX screwdrivers 1 Pozidrive screwdriver 1 8 inch screwdriver 13 16 inch deep well nut driver 1 4 inch hex socket 3 16 inch nut driver WARNING Hazardous voltages exist on the power supply To avoid e...

Page 47: ...ols If for some reason you lose the license files you can obtain new license files from Agilent To save the license file 1 Insert a writeable CD into the CD drive 2 Use Windows Explorer to copy the fo...

Page 48: ...llowing Closes all programs that are running Writes all data to the disk Turns off the power supply WARNING Hazardous voltages exist on the power supply To avoid electrical shock disconnect the power...

Page 49: ...ing no will prevent the shutdown and not answering the dialog box neither clicking Yes or No will have no effect Further short presses on the power button will have no effect Using a Long Press of the...

Page 50: ...ules unless stated otherwise See also the service guide that came with your measurement module 1 Perform previous procedures To prepare the instrument for disassembly on page 48 2 Using a 1 4 inch hex...

Page 51: ...l finger tight in the same order used in step 5 above If using a hex socket or torque driver avoid over tightening 2 in lb maximum 8 For correct air circulation install filler panels in all unused car...

Page 52: ...15 screwdriver remove the handle assembly 3 Using a Torx T10 screwdriver remove 3 screws that secure the cover to the chassis 4 Slide the cover back and up to remove 5 Reverse this procedure to replac...

Page 53: ...02A CPU tray 1 Perform previous procedures To prepare the instrument for disassembly on page 48 To remove and replace the cover on page 52 2 Disconnect cables from the module interface board 3 Remove...

Page 54: ...eing careful not to catch the loose cables on anything 5 Reverse this procedure to install the CPU tray 16903A CPU tray 1 Perform previous procedures To prepare the instrument for disassembly on page...

Page 55: ...m the back of the CPU tray using a Torx T10 screwdriver 4 Slide the tray out being careful not to catch the loose cables on anything 5 Reverse this procedure to install the CPU tray CPU power Hard dri...

Page 56: ...ray 3 Disconnect the CPU touch screen cable 4 Pull the end of the PCI board that is attached to the PCI bracket toward you to release it from the bracket then lift slightly to remove from slots 5 Pull...

Page 57: ...rd to the CPU tray 3 Disconnect the CPU touch screen cable and PCI cable 4 Use a Torx T10 screwdriver to remove the PCI board retainer 5 Pull the board up to disconnect it from the PCI socket on the m...

Page 58: ...e the screw securing the interface card to the rear panel of the CPU tray 3 Swing the plate over the tall slot s out of the way as shown in the following figure 4 Lift the card out of the socket to re...

Page 59: ...Replacing Assemblies 6 16900A 16902A and 16903A Service Guide 59 Rear Panel Tab on Card Motherboard T10 Screw Plate on Rear Panel Card Socket Bottom of CPU Tray Tall Slot Interface Cards...

Page 60: ...the front panel reset cable 3 Using a deep well 13 16 inch nut driver remove the hex nuts that secure the BNC connectors to the rear panel 4 Using a Pozidrive screwdriver remove the 4 screws securing...

Page 61: ...mbly on page 48 To remove and replace the cover on page 52 To remove and replace the CPU tray on page 53 1 Disconnect the I O cable 2 Using a Torx T10 screwdriver remove the 2 screws securing the I O...

Page 62: ...nd replace the CPU tray on page 53 2 Disconnect the hard drive cables 3 Using a Torx T10 screwdriver remove the 4 screws that secure the hard drive to the hard drive plate These screws are accessible...

Page 63: ...isconnect the following cables Power Reset CD ROM 3 Remove the 6 Hex Studs securing the connectors to the rear panel of the CPU tray 4 Using a Torx T10 screwdriver remove the 7 screws that secure the...

Page 64: ...interface board Front panel cable 16902 03A only Power On Off cable CD ROM cable 3 Using a Torx T10 screwdriver remove 4 screws that secure the front panel to the chassis 4 Remove replace the front pa...

Page 65: ...el assembly on page 64 2 Using a Torx T10 screwdriver remove the 2 screws securing the drive to the front panel 3 Using a Torx T6 screwdriver remove the 2 screws securing the drive to the bracket 4 Us...

Page 66: ...e and replace the cover on page 52 To remove and replace the front panel assembly on page 64 2 Place the front panel assembly face down and disconnect the cables from the touch screen controller board...

Page 67: ...Replacing Assemblies 6 16900A 16902A and 16903A Service Guide 67 4 Ensure the jumper on J1 connector has the top inside pin exposed when replacing...

Page 68: ...eplace the cover on page 52 To remove and replace the front panel assembly on page 64 2 Place the front panel assembly face down and disconnect the cables from the inverter board as shown 3 Using a To...

Page 69: ...anel assembly on page 64 To remove and replace the touch screen controller board on page 66 To remove and replace the backlight inverter board on page 68 2 Place the front panel assembly face down and...

Page 70: ...70 16900A 16902A and 16903A Service Guide 6 Replacing Assemblies Front Panel Interface Board LCD Cable T10 Screw Keyboard Cable Keyholes 4...

Page 71: ...ront panel assembly on page 64 To remove and replace the touch screen controller board on page 66 To remove and replace the backlight inverter board on page 68 To remove and replace the front panel in...

Page 72: ...front panel interface board on page 69 To remove and replace the LCD bracket assembly on page 71 2 Pull the touch screen and LCD cables through the slots in the LCD bracket 3 Gently pry the touch scr...

Page 73: ...ket with the guide pins sticking through the keypad board 7 Press on the LCD bracket assembly firmly to ensure the LCD display is attached to the touch screen 8 Using a Torx T10 screwdriver screw the...

Page 74: ...board on page 69 To remove and replace the LCD bracket assembly on page 71 2 Remove the knobs from the front of the frame 3 Using a Torx T10 screwdriver remove the 1 screw securing the keypad board t...

Page 75: ...Replacing Assemblies 6 16900A 16902A and 16903A Service Guide 75 T10 Screw 1 Keypad Board Keypad Front Panel Label 12 mm Knobs 3 18 mm Knobs 2 Cursor Knob Front Frame...

Page 76: ...e 71 6 Using a Torx T6 screwdriver remove the screw securing the On Off board to the front frame 7 Using a 1 4 inch hex socket remove the shoulder screw securing the On Off board to the front frame 8...

Page 77: ...To remove and replace the front panel assembly on page 64 2 Disconnect the following cables on both power supplies Power Cable Sense Cable 12 Position Cable WARNING Hazardous voltages exist on the pow...

Page 78: ...previous procedures To prepare the instrument for disassembly on page 48 To remove and replace the cover on page 52 2 Disconnect the following cables Power Cable Sense Cable 24 Position Cable 22 Posi...

Page 79: ...eplacing Assemblies 6 16900A 16902A and 16903A Service Guide 79 T20 Screws 2 700 Watt Power Supply T10 Screw 1 16 Position Cable 22 Position Cable Power Cable 24 Position Cable Sense Cable T10 Screw 1...

Page 80: ...2 Using a Torx T10 screwdriver remove the screws holding the module ejectors to the rear of the chassis 3 Using a Torx T10 screwdriver remove the 6 screws holding the card cage assembly to the rear of...

Page 81: ...Replacing Assemblies 6 16900A 16902A and 16903A Service Guide 81 T10 Screws 4 T10 Screws 4 T10 Screws 4 Fan Cables Module Interface Board...

Page 82: ...48 To remove and replace the cover on page 52 1 Disconnect the power cable from the power supply 2 Using a Torx T10 screwdriver remove the 2 screws securing the power socket to the frame and the 1 scr...

Page 83: ...r on page 52 To remove and replace the CPU tray on page 53 To remove and replace the front panel assembly on page 64 To remove and replace the power supplies on page 77 To remove and replace the card...

Page 84: ...rx T10 screwdriver remove the 6 screws securing the front strut to the chassis 5 Using a Torx T10 screwdriver remove the 8 screws securing the module interface board to the front strut Front Strut T10...

Page 85: ...e part to be returned Name and address of owner Model number Serial number Description of service required or failure indications 2 Remove accessories from the logic analysis system Only return access...

Page 86: ...86 16900A 16902A and 16903A Service Guide 6 Replacing Assemblies...

Page 87: ...Logic Analysis System Service Guide Agilent Technologies 7 Replaceable Parts Replaceable Parts Ordering 88 Cover Assembly 90 Front Panel Assemblies 91 16900A and 16902A Frames 94 16903A Frame 97 Power...

Page 88: ...can supply parts through a direct mail order system The advantages to the system are direct ordering and shipment from the Agilent Technologies Part Center There is no maximum or minimum on any mail o...

Page 89: ...States contact your nearest Agilent Technologies Sales Office for information To locate a sales office near you go to http www agilent com find contactus For more information on returning assemblies...

Page 90: ...90 16900A 16902A and 16903A Service Guide 7 Replaceable Parts Cover Assembly The cover assembly is the same for the 16900A 16902A and 16903A models...

Page 91: ...Parts 7 16900A 16902A and 16903A Service Guide 91 Front Panel Assemblies The 16900A supports external displays The 16902A and 16903A have a built in color touch screen display and also support extern...

Page 92: ...Accessory pouch MP3 16600 68707 1 Handle includes screws MP4 16900 94301 1 ID label 16900A MP5 16902 94301 1 ID label 16902A MP6 16903 94300 1 ID label 16903A MP7 16900 40201 1 Front frame MP8 16902 4...

Page 93: ...screen assembly MP25 0960 2590 1 Touch screen controller board W1 16902 61601 1 Front panel cable W2 16900 61607 1 On Off front cable W3 16900 61603 1 CD to MIB cable W4 01680 61608 1 Inverter cable W...

Page 94: ...4 16900A 16902A and 16903A Service Guide 7 Replaceable Parts 16900A and 16902A Frames The 16900A and 16902A logic analysis systems are modular with slots for 6 measurement modules Go to www agilent co...

Page 95: ...rx T20 H8 0515 1349 4 Screw rear foot H9 2360 0462 4 Screw with washer H10 3030 1245 4 Screw shoulder 6 32 THD 0 20 IN LG H11 0380 1858 6 Standoff hex 312 IN LG 4 40 THD H12 0515 0430 15 Screw T10 Tor...

Page 96: ...lot cover MP46 1400 2120 1 2 ISA slot cover MP47 16700 40501 0 6 Module Filler panel W3 16900 61603 1 Cable CDR MIB CPU W8 16700 61602 1 Power supply cable for 500 W and 700 W supplies W9 16900 61609...

Page 97: ...Replaceable Parts 7 16900A 16902A and 16903A Service Guide 97 16903A Frame The 16903A logic analysis system is modular with slots for 3 measurement modules...

Page 98: ...6 32 THD 0 20 IN LG H11 0380 1858 6 Standoff hex 312 IN LG 4 40 THD H12 0515 0430 15 Screw T10 Torx H13 0515 4768 4 Screw panel M2 5 X 0 45 8MM LG H14 1250 2075 4 Nut RF connector 9 16 inch hex 1 2 28...

Page 99: ...CDR MIB CPU W11 16900 61611 1 Cable touch screen RS 232 W12 16903 61605 1 CPU reset cable W13 16600 61611 1 Cable hard drive power W14 16900 61601 1 Cable hard drive W15 16903 61600 1 Motherboard pow...

Page 100: ...1 C15 90 IEC 320 1 C13 90 2 5 meters 2 2 meters Black Gray Australia New Zealand 16900 02A Opt 902 16903A Opt 902 250V 8120 5394 8120 1692 IEC 320 1 C15 90 IEC 320 1 C13 90 2 5 meters 2 0 meters Blac...

Page 101: ...60320 1 C13 90 2 5 meters 4 5 meters Black Flint Gray Chile 16900 02A Opt 922 16903A Opt 922 8120 0953 8120 8377 IEC 320 1 C15 90 IEC 320 1 C13 90 2 5 meters 2 2 meters Black Flint Gray People sRepub...

Page 102: ...102 16900A 16902A and 16903A Service Guide 7 Replaceable Parts...

Page 103: ...6900A 16902A PCI Board 110 16900A 16902A MIB Module Interface Board 111 16900A 16902A Input Output Board 112 16902A 16903A Front Panel Assembly 114 16900A 16902A 16903A Power Up Routine 115 16903A Blo...

Page 104: ...tem in terms of the major subsystems including CPU subsystem PCI board MIB module interface board I O input output board Front panel assembly CPU MOTHERBOARD PCI Board Module Interface Board IO Board...

Page 105: ...ves more on page 109 Power more on page 109 PCI board The following PCI board subsystem block diagram includes PCI bridge more on page 110 Module FPGA more on page 110 Video circuit more on page 110 P...

Page 106: ...p monitor more on page 111 Fan control more on page 111 PLD FAN CONTROL OVERTEMP MONITOR VOLTAGE RAIL MONITOR POWER CONNECTORS 2 POWER SENSE CONNECTORS 2 CPU POWER CONNECTOR IDE BUS CONNECTOR CDRW DRI...

Page 107: ...3 Trigger IN OUT more on page 113 Clock IN more on page 114 Calibration OUT more on page 114 FPGA 120 pin CONNECTOR to MIB module interface board 100MHZ SOURCE MULTIFRAME INPUT OUTPUT CONNECTORS TARGE...

Page 108: ...e front panel assembly block diagram shown here includes LCD display Touch screen board and grid Keypad board For more information on the front panel assembly go to page 114 FRONT PANEL BOARD MIB BOAR...

Page 109: ...o 1300 W maximum draw from the outlet Note that the instrument is shipped with a special notched power cord for the notched input receptical which prevents the use of lower current rated cords The fra...

Page 110: ...kplane FPGA is a PCI device which bridges from the CPU PCI bus to the logic analyzer backplane A Xilinx Virtex E XCV300E FPGA is used This FPGA is programmed to contain a PCI 33 MHz core and the 16 bi...

Page 111: ...removing the power cord for 15 seconds to clear the condition Voltage rail monitor All six voltage rails are continuously monitored for an under voltage fault condition This could be caused by such t...

Page 112: ...ation trig arm flag routing FPGA function The Xilinx XC2V250 FPGA is the heart of the I O board and contains almost all of the functional logic for this module The system interfaces directly to this p...

Page 113: ...gs RUN UARTS receive and transmit and cable on detection They route from FPGA to FPGA across frames with no other hardware other than termination resistors The UARTS allow frames to communicate at a l...

Page 114: ...16902A 16903A Front Panel Assembly The 16900A frame does not have a liquid crystal display LCD The identical front panel assembly with LCD is used on both the 16902A six slot logic analyzer and the 1...

Page 115: ...onnector J4 is used to provide the high voltage needed to light the display backlight This high voltage is generated using a power inverter board which is mounted on the front panel interface board Th...

Page 116: ...reen Once the video drivers load the resolution will switch and eventually a logon screen will be presented The logon screen will appear on whichever video adapter LCD or external VGA was displaying t...

Page 117: ...s services background processes are started automatically by the system These services are like UNIX Linux daemons They run silently in the background in order to provide system services They run befo...

Page 118: ...either wait for the service to start newer software revisions or generate a message box indicating the service needs to be started older software revisions If the drivers are not loaded the GUI appli...

Page 119: ...ve system level recovery This is done by placing the appropriate recovery CD into the CD ROM and rebooting the analyzer When the system begins booting after shutting down the recovery sequence will be...

Page 120: ...tom of the self test dialog is a results pane The reporting level how verbose the tests are can be controlled using a slider bar at the top of the dialog At the very least each test should report that...

Page 121: ...age 125 Video circuit more on page 125 I O FPGA more on page 125 PLD more on page 126 CPU MOTHERBOARD PCI Board Module Interface Board I O Board Front Panel Interface Board Keypad Board 12 1 Flat Pane...

Page 122: ...igger IN OUT more on page 127 Clock IN more on page 128 Calibration OUT more on page 128 PLD FAN CONTROL OVERTEMP MONITOR VOLTAGE RAIL MONITOR POWER CONNECTORS 3 POWER SENSE CONNECTOR CPU POWER CONNEC...

Page 123: ...ypad board For more information on the front panel assembly to to page 128 16903A CPU Subsystem CPU board The CPU motherboard is a standard microATX configuration with 512 MB of system RAM The exact C...

Page 124: ...if the CPU does not respond The small portion of circuitry involved in this process is powered from an auxiliary 5 V which is always present as long as the instrument is plugged in Additional logic mo...

Page 125: ...hardware This includes all circuits necessary to interface with measurement modules drive the front panel assembly monitor frame functions and interface to the CPU motherboard via a PCI port It also...

Page 126: ...functions include a system interface to control the trigger input and output ports target control port a serial DAC programmer and UARTs for multiframe PLD The PLD is the low level system control elem...

Page 127: ...p level function The 16903A I O board is a simple passive board for the I O connectors It connects back to the main MIB board where the interface logic is located Target control port The target contro...

Page 128: ...Calibration OUT This BNC output is a low frequency 49 KHz signal driven from a LVTTL 50 line driver It is used by an external Time Correlation Fixture to simultaneously trigger multiple frames and osc...

Page 129: ...ipping 16 dimensions 13 disassembly preparation 48 procedures 46 display 3 E exchange assemblies 88 exploded view 16900 02A frames 94 16903A frame 97 cover 90 front panel 91 F features 3 flowcharts tr...

Page 130: ...nt strategy 46 returning assemblies 85 S sales office 4 saving license file 47 self tests 42 service office 4 shipping damage 16 shipping requirements 12 specifications see characteristics 12 storage...

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