5725A
 Limited Warranty and Limitation of Liability
 Table of Contents
 5725A
 Calibration and Verification
 Schematic Diagrams
 List of Tables
 5725A
 List of Figures
 Viii
 Interference Information
Page
 Operator Safety Summary
 Symbols Marked on Equipment
 Servicing Safety Summary
 First AID for Electric Shock
 Introduction and Specifications
 5725A
 Introduction
 Where to Go From Here
 How to Use the Manuals
Getting Started Manual
A/5720A Series II Operator Reference Guide
 A/5720A Series II Remote Programming Reference Guide
Specifications
 5720A 99%
DC Voltage Specifications
 Range Resolution
99 % Confidence Level
95 % Confidence Level
 Overshoot 5 % Common mode rejection 140 dB, DC to 400 Hz
 A Series II AC Voltage Specifications 99 % Confidence Level
AC Voltage Specifications
 Hours Days ± ppm output + μV
A Series II AC Voltage Specifications 95 % Confidence Level
Range Resolution Frequency Absolute Uncertainty
Relative Uncertainty ± 1 C
 Relative Uncertainty ± 1 C Hours
99 % Conf idence Level
Frequency Absolute Uncertainty
Hours Days Year ± ppm output + μV
 95% Confidence Level
 ±% output
Range Frequency
Stability ± 1 C Note Hours
±ppm output/C
 Stability ±1 C Note Hours ±ppm output + mV
Temperature Coefficient Adder 10-40 C 10 C
 Hours Days Year Relative Uncertainty ±1 C
Resistance Specifications
99% Confidence Level
Nominal Absolute Uncertainty of Characterized Value
 Resistance Specifications
 Maximum Peak Current
Two-Wire Adder
Nominal Value
Stability
 Value of Derating Factor K for Over or Under Current
Two-Wire Comp
Four-Wire
12. Current Derating Factors
 DC Current Specifications
Relative Uncertainty ±1 C
Hours Days ± ppm output + nA ± ppm output + μA
 Days ± ppm output + nA ± ppm output + μA
 Overshoot 5 %
 AC Current Specifications
Absolute Uncertainty Relative Uncertainty Resolution
Hours Days ± ppm output + nA Year
 Relative Uncertainty ±1 C Hours Days ± ppm output + nA Year
 22 mA 10 nA 100 nA 650 350 120 1k 5 k 500 05k 10 k 1500
 Relative Uncertainty ±1 C Hours Days Year ± ppm output + nA
 Bandwidth 10 Hz-50 kHz 0.5V Burden ± % output + μA
Stability ±1 C Note
10-40 C 40-50 C ± ppm output + nA/C
For Full Accuracy
 21. Wideband AC Voltage Option 5700-03 Specifications
Wideband AC Voltage Option 5700-03 Specifications
 General Specifications
Guard isolation 20
Size
 Accuracy
Auxiliary Amplifier Specifications
Frequency
Day Accuracy at 23 ±5 C ± % output + % range
 Installation
 5725A
 Unpacking and Inspection
Standard Equipment
Model or Part Number
 Line Power Cords Available for Fluke Instruments
Line Power Cord Types Available from Fluke
 Service Information
Placement and Rack Mounting
Cooling Considerations
 Connecting to the 5700A Calibrator
5700A
5700A 5725A
 Selecting Line Voltage
100V 110V F8A 115V
120V S2 S3 S4 200V 220V 230V F4A
 Accessing the Fuse
Accessing the Fuse
 Connecting to Line Power
 5725A
 Operating Notes
 5725A
 Operating Notes
 Front Panel Features
Front Panel Features
 Voltage Mode Indicator
Front Panel Features Current Output Binding Posts
5725A Standby Indicator
Current Mode Indicator
 Rear Panel Features
Rear Panel Features
 Line Voltage Selection Switches
Rear Panel Features Current Output Binding Posts
Calibration Switch
5700A Calibrator Connector
 Warm Up
Turning on the 5725A Amplifier
 Standby
Operating Functions and Modes
 Voltage Standby
Voltage Standby Mode
 Current Standby
Current Standby Mode
 Voltage Operate
Voltage Operate Mode
 Current Operate
Current Operate Mode
 Conditions That Activate the 5725A
 Theory of Operation
 High Voltage Heat Sink Assemblies
 Overall Functional Description
 A Overall Block Diagram
 AC Range Functional Description
 Range Functional Description
 Voltage Standby
Operation in the 11A DC Range
Operation in the 11A AC Range
Voltage and Current Standby Modes
 Description of the Out-Guard Lines 5725A Side
How the 5700A and 5725A Communicate
 ∙ B-RCL
Description of the In-Guard Lines
 ∙ B-FEEDBACK
Functional Summaries by Assembly
 Detailed Circuit Description
Interconnect Assembly A1
 Power Supply Assembly A4
 Internal Fuse Data
High Voltage Supply Section
 Switching Section
 System Supply Section
Current-Limit Section
 External RAM
Digital Assembly A5
Fan Supply Section
Microcomputer
 Digital Assembly Block Diagram
 Led Driver
Eerom
Data Latch
Strobe Lines
 Break-Detect Circuitry
Power Up and Reset Circuitry
Watchdog Timer
Current Amplifier Assembly A2
 Current Amplifier Assembly Block Diagram
 Error Amplifier Section
 Monitor Section
Output Stage Section
 Power Supply Section
Control and Switching Section
 Input Amplifier
High Voltage Amplifier A3
 High Voltage Amplifier Assembly Block Diagram
 Integrator
Window Comparator
Input Clamp
 High Voltage Heat Sink Assemblies
Transconductance and Cascode Stage
Midstage
Midstage -400V Filter
 Autobias Sense Circuit
Autobias Current Source
 High Voltage Amplifier Feedback
Signal Transformers
Temperature Monitoring
Signal Transformer Usage
 High Voltage Sense Assembly A6
 High Voltage Sense Assembly Block Diagram
 Sense Amplifier Section
 High-Quality Reference Name Destination
Destination Assembly
 Analog Monitor Section
Signals Monitored by the Analog Monitor Section
 Serial Interface/Guard Crossing Section
Analog Input Switching Section
 Control Section
 AC Line Voltage Selection Section
 5725A
 Calibration and Verification
 5725A
 Where to Find Further Information
 5725A
 Static awareness
 Dow Chemical
 Maintenance
 5725A
 Replacing the Fuse
 Cleaning the Air Filter
 Cleaning PCA’s
General Cleaning
 Assembly Location Diagram
Access Procedures
 Initial Access Procedure
 CR318
TP307
TP304 TP301
CR317
 Accessing the Digital Assembly A5
Accessing the Power Supply Assembly A4
 When Reinstalling Digital Assembly
 Accessing the Current Amplifier Assembly A2
 Correct Way to Dress Cables
Accessing the High Voltage Amplifier A3
 Accessing the High Voltage Sense Assembly A6
 Accessing the Interconnect Assembly A1
Accessing the High Voltage Output Transistors
 Enabling Front or Rear Binding Posts
 Enabling Front or Rear Binding Posts
 Troubleshooting
 5725A
 Self Diagnostics
Fault Codes
 Fault Message Explanation
A Fault Codes
 Self Diagnostics
 Manual Tests for Fault Isolation
 Fault no Message
Analog Monitor Faults
 Problem 5 Fault When Entering Current Operate
Reduced-Voltage Troubleshooting Mode
Problem 3 Fault When Entering Voltage Operate
Problem 4 Fault When Entering Current Standby
 Testing the Power Supply By Itself
 5725A
 List of Replaceable Parts
 5725A
 Introduction
 Revision Level
Manual Status Information Assembly Name Fluke Part No
Final Assembly
Ref or Option No
 List of Replaceable Parts Parts Lists
 TM1
 Aq24f.tif
 Aq25f.tif
 Aq26f.tif
 Aq27f.tif
 Aq28f.tif
 Aq29f.tif
 Aq30f.tif
 Aq31f.tif
 A1 Interconnect PCA
 5725A-1611
 A2 Current Amplifier PCA
 Reference Description Designator Fluke Stock Tot Qty
 ZENER,UNCOMP,6.8V,5%,20.0MA,0
 5725A-1650
 A3 High Voltage Amplifier PCA
 Reference Description Designator Fluke Stock Tot Qty
 List of Replaceable Parts Parts Lists
 5725A-1661
 Description Fluke Stock
A4 Power Supply PCA
 Designator
Reference Description
 HARNESS, High Voltage Supply
 5725A-1631
 A5 Digital PCA
Reference
Description Fluke Stock Tot Qty Designator
 5725A-1650
 A6 High Voltage Sense PCA
 Reference Description Designator Fluke Stock Tot Qty
 ZENER,UNCOMP,3.3V,5%,20.0MA,0 ZENER,UNCOMP,5.1V,5%,20.0MA,0
 5725A-1601
 A12 Transformer Enclosure Assembly
 Aq32f.tif
 Aq33f.tif
 Aq34f.tif
 Aq35f.tif
 A30 Inductor PCA
10. A30 Inductor PCA
 Schematic Diagrams
 5725A
 5725A-1611
 5725A
 Schematic Diagrams
 5725A-1650
 Schematic Diagrams
 5725A
 Schematic Diagrams
 5725A-1661
 Schematic Diagrams
 5725A
 Aq59f.eps
 5725A
 Schematic Diagrams
 10 ms
AT Pins 12 and 13 of U507 5725A-1650
 Schematic Diagrams
 5725A-1601
 Schematic Diagrams
 5725A
 Schematic Diagrams
 5725A
 Aq45f.eps
 5725A
 Index
 5725A STANDBY, 3-5CABLE OFF, 3-5CURRENT MODE, 3-5FAULT
 Chassis GROUND, 3-7CURRENT OUTPUT, 3-5,3-7HI, 3-5,3-7
 5725A