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Agilent Technologies 2948 Clocks A10, Pin, J1 and J5, Miscellaneous Control, Overvoltage Control

Models: 2712A 2948

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Model 8904A

Service

n b l e 8-2.A3 and A10 Interconnections to A2

I				Clocks			~~			I	I					Clocks
I	A3		I	J1 and 55		I		A2 1			I IC	A10			I	J1 and J6	I	A2~ ~~
IC	1	Pin	I		Pin	I	IC	I	Pin		I IC	I	Pin		I	Pin	I IC	I	Pin
	I		I			I		I
		3	1		32		U105		2	1	u2		3			32	U105		4
		2	1		15		U105		10	1	u2		2			15	U105		12
				DAC												DAC
	,3			J1 and J5								A10			I	J1 and J6	I	A2
-		Pin			Pin
IC		Pin					IC		Pin				Pin			Pin	IC		Pin
u5		14			13		U37		15		u5		14			13	U34		15
u5		13			12		u37		12		u5		13			12	u34		12
u5		11			11		u37		10		u5		11			11	u34		10
u5		6			10		u37		7		u5		6			10	u34		7
u5		4			9		u37		5		u5		4			9	u34		5
u5		3			8		u37		2		u5		3			8	u34		2
u4		14			7		U33		15		u 4		14			7	U36		15
u4		13			6		u33		12		u4		13			6	U36		12
u4		11			5		u33		10		u4		11			5	U36		10
u4		6			4		u33		7		u4		6			4	U36		7
u4		4			3		u33		5		u4		4			3	U36		5
u4		3			2		u33		2		u4		3			2	U36		2
II										1I							~
		Miscellaneous Control									t		Miscellaneous Control
	A3		I	J1 and J5		I		A2			t	A10	Pin		I	J1 and J6	I	A2	Pin
		Pin		1-			IC	-			IC	I	Pin	1	-				Pin
		Pin					IC	~	Pin
		1					U38		12		U8		1
		1					U38		17		u10		1
		3					U38		16		u10		3			19
		5					U38		15		u10		5
U8		6					U38		14		U8		6
U8		3					U38		18		U8		3				u35
U8		7			22		U38		13		U8		7				u35

i

I

1

I

Overvoltage Control

I

Overvoltage Control

A3

J1 and J5

A2

J l and J6

I

A2

IC 1

Pin

Pin

IC

I

Pin

Pin

I

IC

Pin

I

I

1

11l2I

17

I

U38

I

19

I

17

1

u35

I

19

18

U24

15

u 2

18

U24

15

1

I1

Troubleshooting (Digital/Output Interface) 8-37

Image 105

Agilent Technologies 2948 Clocks A10, Miscellaneous Control, J1 and J5 A10 Pin J1 and J6, Overvoltage Control

Contents

Innovating the HPWay Agilent TechnologiesCopyright@ HEWLETT-PACKARD Company Multifunction SynthesizerRegulatory Information Safety Considerations Safety Considerationsfor this Instrument Product Markings Contents Reu.200CT88 Service cont’d SectionReplaceable Parts List Introductionto this SectionReference Designationsand Abbreviations Used in this Manual How to Order Replaceable Parts List Updating Manual UpdatesNable 6-1.Reference Designations AccessAbbreviations 1 ALCAbbreviations 2 Rev.01JUL91 Replaceable PartsDescription Number CodeFible 6-3.Replaceable Parts HPPart Description Number Mfr- Mfr. Part Number CodeCAPACITOR-FXD22PF +-5% Poovdc CER 0+-30 Not Assigned Designation Number Reference HP Part DescriptionMfr Reference HP Part Description Designation NumberMe 6-3. Replaceable Parts Rev.1 7MAY88Reference HP Part Designation Number Not Assigned Connector Spin M Post Type DIODE-SWITCHING 80V 200MA 2NS DO45CONNECTOR-RFSMC M PC 5 W H M CONNECTOR-RF SMC M PC W H MReference Mfr HP Part Description Cable 6-3.Replaceable PartsRESISTOR-TRMR 1K 10% C TOP-ADJ 17-TRN RESISTOR-TRMR20K 10% C TOP-ADJ 17-TRN0698-3430 Mfr. Part NumberDescription Mfr Rev.17MAY88IC OP AMP Prcn 8-DIP-C PKG Transistor Array 16-PIN Plstc DIPIC Instm Ampl CUR 10-DIP-P PKG IC OP AMP LOW-BIAS-H-IMPD 8-DIP4 PKGHPPart Description Nble 6-3. Replaceable PartsL e 6-3. Replaceable Parts A10Miscellaneous Parts Ble 6-3.Replaceable PartsHPPart Designation Number Code Reference HPPart Description MfrRnftsund Plstem DOME-HD .125DIA Deck AssyRIVET-BUND PL-STEM DOME-HD .125DIA RIVET-BUND Plstem Domehd .125DIANot Separaretlyreplaceable PANEL, Front AYKeypad Punched Shield DisplayQW. Description Reference HPPart Designation NumberQty.Description Designation Code Lbble 6-3. Replaceable Parts Mfrm Mfr. Part Number CodeOrder by Description IZZ-9 Main Deck Assembly Top, 2923A and above Model 8904A Main Deck Assembly Bottom Main Deck Assembly Bottom, Option 006 2948A and above Reu.30NOV89 Front Panel Assembly, 2923A and above Rent Panel Assembly, Option 006 2948A and above Reu.30NOV89 Rear Panel Assembly Rear Panel Assembly, Option 005 2948A and above Rev.30N0 Rev.ZSSEP88 Covers, Labels, and ROMsOutput Cables 1 Output Cables, Option 005 29484 and above 2 Rev.30N0V89 Table of Contents Option Conversions Rev.15DEC89Number 2942A and below Instrument Modifications Titled Hardware ModificationsRevision 22987A with HP 08904-8701 0 as A2U12 FRONT-TO-REAR-PANELOUTPUT Conversion Description Modification ProcedureParts Required Tools RequiredOperation Verification Fl Channel ConfigREAR-TO-FRONT-PANELOUTPUT Conversion DescriptionRev.15DEC89 Rear-to-Front-Panel Output Conversion Fl Channel Config Ront Panel Output Hardware Output Cable Routing ALL Options Firmware Updates A2U12 and A2U13 Rev.01JUL91 Firmware UpdatesBardware ModificationsDifferent function Serial Prefix 2737A and below Modification for Possible Ground Wire Shock HazardFirmware Updates/Hardware Modifications Parts Location Shown with Power Supply RemovedFirmware Updates/Hardware Modifications Ground Wire WrappingModification for Output Overvoltage Protection Improvement Parts ListHPPartNumber ~~ Qty Description Fixed Resistor, 261 orCabinet Parts Color Change Modification for Potential Power Supply ShortReu.15DEC89 Firmware UpdatesIHardwareModifications 1. Modificationfor Front Panel AssemblyRemoving the Front Panel Installingthe Front Panel Dont-Panel Assembly, 2923A and above Section Service A3 or A10 Output Assembly Phase Synchronization OptionSafety Considerations Before Applying PowerHOW the Section is Organized Iwarning Schematic Symbology and Schematic Diagram Notes Service TOOLS, HELPS, and InformationPin of socket Schematic Diagram Notes 1Schematic Diagram Notes 2 Schematic Diagram Notes 3 Digital Symbology Reference Information Llzble 8-1.Schematic Diagram Notes 4Combinational Logic Symbols and Functions Schematic Diagram Notes 5Schematic Diagram Notes 6 Digital Symbology Reference InformationOnly with D-type flip-flops Gate and Dependency-Binary Schematic Diagram Notes 7Miscellaneous Llable 8-1.Schematic Diagram Notes 8ofSchematic Diagram Notes 9 ServiceActive Levels Schematic Diagram Notes 10Enable Schematic Diagram Notes 11Principles of Operation Overall What the Multifunction Synthesizer Can DoHow Waveforms Are Generated Channel a Generating Staircases in the Phase Accumulator Output of the Phase Adder for P=O, 1, Further Digital Waveform Processing with Options Phase @PHASE Freouency PulseFreouency SUM Pulse Level Analog Waveform Processing Interrelationshipof the Circuit AssembliesReu.15DEC89 Principles of Operation Overall Synthesizer PASSY- t General A2 Digital AssemblyA3 Output Assembly Service Sheets 1 through General Digital-to-Analog Converter Service SheetTrack-and-Hold Circuit Service Sheet Simplified Diagram of the Sampler Drive 10.Simplified Diagram of the Sampler Amplifier Audio Amplifier Service Sheet Low-Pass Filters Service SheetSine X/X CompensationService Sheet 12, and 24 dB Attenuators Service SheetFloating Amplifier Driver and On/Off Switch Service Sheet Floating Output Amplifier Service SheetOvervoltage Protectionand Output Circuits Service Sheet Rev.15DEC89 Troubleshooting General Troubleshooting GeneralA2 Digital Assembly to A3 or A10 Output Assembly Interface ProcedureEquipment 1. How to Access A3 in Instruments Equipped with Option Serial Prefix Troubleshooting Digital/Output InterfacePeriod Fl Channel ConfigPin Frequency Hz Fl Channel ConfigFunction A3 Key Sequence A10 Key Sequence A3/A10 ConnectionIC Pin Level F3 Memory Map Access Pin Clocks A10J1 and J5 Miscellaneous ControlFl Keyboard Check A2 Digital Assembly to A1 Keyboard Assembly InterfacePin Key Pressed Response lTL AMPTD, Wave FormKey Sequence Annunciator Status IC on A2 Pin Level lTL F3 Memory Map AccessDescription A2 Digital Assembly to A5 Display Assembly InterfaceA3 or A10 Output Assembly Troubleshooting Phase Synchronization Phase SynchronizationoptionHP 8904A Opts After keying in 8 7, the display should be IFirmware Revision 18387A Serial No HP 8904A Opts 02/01 IFirmware Revision 18387A Serial NoAfter keying in 4 8, the display should be Begin again at step Troubleshooting Memory Backup Battery 48.1 HOW to Replace the Memory Backup BatteryTools and Supplies PartsTroubleshooting Memory Backup Battery 48.3 Rev.15DEC89 Troubleshooting Memory Backup BatteryPage N a 12.4. Line Voltage Wiring Harness R300 A3 Component Coordinates 1L0nA Current Source Ipower Supply ConditionersComp A3 Component Coordinates 2On the A3 schematic Ss2Rev.28MAR89 31901 N3AILlO ONV I813IldIll3 JJOlfl3 dWHS15.Service Sheet Information Component Locator Rev.28MAR89 54.1 ChangesAmpto Instrument Settings Measure Aooitions I T I a L Instrument SettingsCoup OUT K2AComponent Coordinates 1 + a56.1 Ss4Ss4 A6 Schematic and Component locator Ss5 0 A3/A10 Output Assembly