Internal Standby Battery Maintenance | Agilent Technologies 5071A

Operating and Programming

Installation

Preparing the RP 5071-A For External-Dc Operation

Option 048: Delete the existing procedure and use the following procedure

1.Connect the positive (+) terminal of the 40 to 58 Vdc power to the + screw terminal of INPUT 1 on the rear-panel 5-terminal barrier strip.

2.Connect the minus (–) terminal of the 40 to 58 Vdc power to the – screw terminal of INPUT 1 on the rear-panel 5-terminal barrier strip.

3.Connect the system or power source ground terminal to the 3rd (center) screw terminal of the rear-panel barrier strip labeled chassis GND.

4.Check your connections for correct polarity, voltage range, and tightness before you turn the dc power on.

5.If a second 48 Vdc power source will be used, repeat steps 1 through 4 with INPUT 2 of the rear-panel barrier strip. (INPUT 2 will be an alternate power source if INPUT 1 should fail, be disconnected, or sag below the voltage of INPUT 2.)

6.Connect external ac power to the rear-panel ac input connector.

7.Remove dc power from INPUT 1 (and INPUT 2 if connected) on the rear-panel barrier strip. Observe the front panel, the status message should read: source AC.

8.Reapply dc power to the instrument; the front-panel status message reads: source DC.

Replacing the External Dc Input Power Fuse

Option 048: Step 3 of the procedure is changed:

3.Insert the replacement fuse (2.5 A, 250-volt rating, part number 2110-0952).

Internal Standby Battery Maintenance

Option 048: All procedures are deleted.

Long-Term Storage

Option 048: The last parenthetical sentence of the last paragraph referencing the internal-standby battery is deleted-

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Agilent Technologies 5071A manual Internal Standby Battery Maintenance, Long-Term Storage

Contents

7HOHFRPPXQLFDWLRQV2SWLRQV Page Telecommunications Options Supplemental Manual Before Cleaning Manual Updating Changes 05071-90042, December Contents Service Supplemental Characteristics Available Accessories and Options Contents How to Use This Manual Instrument Identification How to Order Manuals Instruments Covered by This manualManual Organization Operating and Programming 5071A Major Features IntroductionIntroducing the 5071A Operating The 5071A Connectors Getting Started5071A at a Glance Rear-Panel Connections 5071A Rear Panel Connections Fuse Powering Down the 5071A Starting The 5071APerforming Basic Tasks Synchronizing to an External 1 PPS Reference Using the 5071A Disabling the Internal -Standby BatteryMonitoring Status Front-Panel Indicators and Messages Rear-Panel Output ConnectorsCase of Difficulty Restarting the 5071A 5071A Command References 5071A Command SummaryScpi Subsystem Commands Scpi Commands Specifications Installation Power RequirementsOperating the 5071A From External Dc Power Preparation for Use Internal Standby Battery Maintenance Replacing the External Dc Input Power FuseLong-Term Storage Preparing the RP 5071-A For External-Dc Operation Assembly-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 Subsection Ac-Line Fuse Fault Isolation r/o LF1/T1 4.0.0 Ext. Dc Input Fuse FaultNo Operation From Internal Standby Battery Internal-Battery Charger Test Assembly/Module Diagnostic Trees Diagnostic Section A8 Diagnostic Tree A/M Subsection 3 1 PPS Outputs Test4 A8 Front/Rear-Panel Sync Input Test 5 A8-to-Chassis Interconnect Test A9 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 Theory of Operation IntroductionSimplified Functional Description A1 Motherboard Circuit Description Power Supply Block Functional Block DescriptionsInput/Output Block Operating Firmware Warning Mode Instrument Control Block Reference 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 Diagram 48V Subpanel Assembly Input Chassis Ground B1 Internal-Standby Battery A1 Power-Supply Block Diagram Replaceable Parts Exchange Assemblies Replaceable Parts Backdating Backdating Specifications Supplemental Characteristics Internal Standby Battery Nominal ValuesTime Standard Environmental Weight Accessories Furnished Dc input connector Available Accessories and Options Options Service and Support From front matter Declaration of Conformity Page Page Manual Part Number