Agilent Technologies 5071A manual B1 Internal-Standby Battery, A1 Power-Supply Block Diagram

Page 42

Assembly-Level Service

Theory of Operation

Figure 3-5. A1 Power-Supply Block Diagram

Option 048: The Power Supply block diagram on page 3-30 is changed:

•The Ext DC Input voltage is 40-58 VDC,

•The F2 fuse rating is 2.5A,

•The T1 toroidal power transformer part number is 9100-5134,

•The P/O B1 battery packs are deleted,

•The 05071-60226 battery connector assemblies are deleted,

•The F1 fuse and series-connected diode on A11 are deleted.

The external dc input(s) enter the instrument via the 48V Subpanel Assembly (part number 05071-60277) which provides both inputs with power steering and fuse protection. The schematic diagram for the Subpanel Assembly appears in Figure 2-1 of this chapter.

B1 Internal-Standby Battery

Option 048: The paragraph describing the B1 Internal Standby Battery on page 3-31 is deleted:

2-18

Image 42

Contents 7HOHFRPPXQLFDWLRQV2SWLRQV Page Telecommunications Options Supplemental Manual Before Cleaning Manual Updating Changes 05071-90042, December Contents Service Supplemental Characteristics Available Accessories and OptionsContents How to Use This Manual Instrument IdentificationHow to Order Manuals Instruments Covered by This manualManual Organization Operating and Programming Introducing the 5071A 5071A Major FeaturesIntroduction Operating The 5071A5071A at a Glance ConnectorsGetting Started Rear-Panel Connections5071A Rear Panel Connections Fuse Performing Basic Tasks Powering Down the 5071AStarting The 5071A Synchronizing to an External 1 PPS ReferenceUsing the 5071A Disabling the Internal -Standby BatteryMonitoring Status Case of Difficulty Front-Panel Indicators and MessagesRear-Panel Output Connectors Restarting the 5071AScpi Subsystem Commands 5071A Command References5071A Command Summary Scpi CommandsSpecifications Operating the 5071A From External Dc Power InstallationPower Requirements Preparation for UseLong-Term Storage Internal Standby Battery MaintenanceReplacing the External Dc Input Power Fuse Preparing the RP 5071-A For External-Dc OperationAssembly-Level Service Rear-Panel Output Signal Checks Performance Tests5071A Operational Verification Service Assembly Identification and LocationOption Top-Level Diagnostic Tree Organization Top-Level Diagnostic Tree Diagnostic SectionFirst Power On Warm-up and Fatal Error Diagnostic Tree Power-Supply Diagnostic Tree Advisory Messages SubsectionNo Operation From Internal Standby Battery Ac-Line Fuse Fault Isolation r/o LF1/T14.0.0 Ext. Dc Input Fuse Fault Internal-Battery Charger Test4 A8 Front/Rear-Panel Sync Input Test Assembly/Module Diagnostic Trees Diagnostic SectionA8 Diagnostic Tree A/M Subsection 3 1 PPS Outputs Test 5 A8-to-Chassis Interconnect TestA9 Diagnostic Tree A/M Subsection 5.0 A9 Mon Signal Test 6.0 A9 J4 80-MHz Signal Test4.1 A9-to-Chassis TCO Option signal Interconnect Test Simplified Functional Description Theory of OperationIntroduction A1 Motherboard Circuit DescriptionPower Supply Block Functional Block DescriptionsInput/Output Block Operating Firmware Warning Mode Instrument Control BlockReference Oscillator/RF-Chain Block Interconnections Power Supply Block A1 Motherboard Circuit Description Overvoltage Protection CircuitExternal Dc Input Circuit A11 Power Steering Logic Assembly A1 Power Supply/Distribution Schematic Diagram48V Subpanel Assembly Input Chassis GroundB1 Internal-Standby Battery A1 Power-Supply Block DiagramReplaceable Parts Exchange AssembliesReplaceable Parts Backdating Backdating Specifications Time Standard Supplemental CharacteristicsInternal Standby Battery Nominal Values EnvironmentalWeight Accessories Furnished Dc input connectorAvailable Accessories and Options OptionsService and Support From front matter Declaration of Conformity Page Page Manual Part Number