User ManualTable of Contents5725A Intruction Manual1LIMITED WARRANTY AND LIMITATION OF LIABILITY2Table of Contents3List of Tables7List of Figures9Interference Information11OPERATOR SAFETY SUMMARY13Symbols Marked on Equipment14Power Source14Use the Proper Fuse14Grounding the 5725A14Use the Proper Power Cord14Do Not Operate in Explosive Atmospheres14Do Not Remove Cover14Do Not Attempt to Operate if Protection May be Impaired14SERVICING SAFETY SUMMARY15Do Not Service Alone15Use Care When Servicing With Power On15FIRST AID FOR ELECTRIC SHOCK161. Introduction and Specifications17Introduction19Where to Go From Here20How to Use the Manuals215725A Getting Started Manual215725A Instruction Manual215700A/5720A Series II Manual Set215700A/5720A Series II Operator Manual215700A/5720A Series II Operator Reference Guide215700A/5720A Series II Remote Programming Reference Guide225700A/5720A Series II Service Manual22Specifications22DC Voltage Specifications23AC Voltage Specifications26Resistance Specifications32DC Current Specifications36AC Current Specifications39Wideband AC Voltage (Option 5700-03) Specifications44General Specifications452. Installation47Introduction49Unpacking and Inspection49Service Information51Placement and Rack Mounting51Cooling Considerations51Connecting to the 5700A Calibrator52Selecting Line Voltage53Accessing the Fuse54Connecting to Line Power553. Operating Notes57Introduction59Front Panel Features60Rear Panel Features62Turning on the 5725A Amplifier64Warm Up645725A Operating Functions and Modes65Standby65Voltage Standby66Current Standby67Voltage Operate68Current Operate69Conditions That Activate the 5725A704. Theory of Operation71Introduction73Overall Functional Description731100V AC Range Functional Description7511A Range Functional Description76Operation in the 11A DC Range77Operation in the 11A AC Range77Voltage and Current Standby Modes77Voltage Standby77Current Standby77How the 5700A and 5725A Communicate78Description of the Out-Guard Lines (5725A Side)78Description of the In-Guard Lines79Functional Summaries by Assembly80Detailed Circuit Description81Interconnect Assembly (A1)81Power Supply Assembly (A4)82High Voltage Supply Section83Switching Section84Current-Limit Section85System Supply Section85Fan Supply Section86Digital Assembly (A5)86Microcomputer86External RAM.86External ROM86EEROM88Data Latch88Strobe Lines88Led Driver88Optoisolator Link88Break-Detect Circuitry89Power Up and Reset Circuitry89Watchdog Timer89Current Amplifier Assembly (A2)89Error Amplifier Section91Output Stage Section92Monitor Section92Control and Switching Section93Power Supply Section93High Voltage Amplifier (A3)94Input Amplifier94Integrator96Window Comparator96Input Clamp96Transconductance and Cascode Stage97Midstage97Midstage -400V Filter97High Voltage Heat Sink Assemblies97Autobias Current Source98Autobias Sense Circuit98High Voltage Sense Assembly (A6)1005. Calibration and Verification109Introduction111Where to Find Further Information111Static Awarenss1136. Maintenance115Introduction117Replacing the Fuse117Cleaning the Air Filter118General Cleaning119Cleaning PCA's119Access Procedures120Initial Access Procedure121Accessing the Power Supply Assembly (A4)123Accessing the Digital Assembly (A5)123Accessing the Current Amplifier Assembly (A2)125Accessing the High Voltage Amplifier (A3)126Accessing the High Voltage Sense Assembly (A6)127Accessing the High Voltage Output Transistors128Accessing the Interconnect Assembly (A1)128Enabling Front or Rear Binding Posts1297. Troubleshooting131Introduction1335725A Fault Codes133Self Diagnostics133Manual Tests for Fault Isolation136Problems 1 or 2: Fault at Power-Up or When Entering Voltage Standby137Problem 3: Fault When Entering Voltage Operate138Problem 4: Fault When Entering Current Standby138Problem 5: Fault When Entering Current Operate138Reduced-Voltage Troubleshooting Mode138Testing the Power Supply By Itself1398. List of Replaceable Parts141Introduction143How to Obtain Parts143Manual Status Information143Newer Instruments143Service Centers143Parts Lists1449. Schematic Diagrams181Index205Size: 35.8 MBPages: 208Language: EnglishOpen manual