Manuals / Brands / Power Tools / Welding System / Agilent Technologies / Power Tools / Welding System

Agilent Technologies E3631A Normal Mode Current Noise (CC Ripple and Noise)

1 134

Download 134 pages, 6.26 Mb

Chapter 3 Calibration Procedures

Constant Current (CC) Verifications

58

Normal Mode Current Noise (CC Ripple and Noise)

The normal mode current noise is specified as the rms output current in a

frequency range 20 Hz to 20 MHz with the power supply in constant current

operation.

1Turn off the power supply and connect the output to be tested as shown in Figure

3-1 with a load resistor (1.29 for +6V supply and 259 for ±25V supplies) acro ss

output terminals to be tested. Connect a rms voltmeter across the load resistor.

Use only a resistive load for this test.

2Turn on the power supply and select the output to be tested using the meter

selection key on the front panel. Enable the outputs and set the display to the

limit mode. When the display is in the limit mode, program the current to full-

scale value and the voltage to the maximum programmable value.

3The output current should be at the full-scale rating with the CC annunciator

on. If not lit, adjust the load so that the output voltage drops slightly until the

CC annunciator lights.

4Divide the reading on the rms voltmeter by the load resistance to obtain rms

current. The readings should be within the limit specified below for each

output tested.

5Repeat steps (1) through (4) for the remaining outputs.

Output Specification

+6V 2 mA

+25V 0.5 mA

-25V 0.5 mA

Contents

Main Page The Front Panel at a Glance 3 Front-Panel Voltage and Current Settings 5 Display Annunciators To review the display annunciators, hold down key as you turn on the power supply. The Rear Panel at a Glance In This Book Page Page Page Page Page Page Page Performance Specifications Page Supplemental Characteristics Chapter 1 Specifications Supplemental Characteristics 18 Page Page Page Quick Start To prepare the power supply for use Page To check the rated voltages of the power supply Page To check the rated currents of the power supply Page To use the power supply in constant voltage mode Page To use the power supply in constant current mode Page To use the power supply in track mode To store and recall the instrument state Store 1 Store 3 done recall 1 done recall 3 To rack mount the power supply Page Page Page Calibration Procedures Agilent Technologies Calibration Services Calibration Interval Automating Calibration Procedures Recommended Test Equipment Test Considerations Performance Verification Tests Self-Test Performance Verification Tests Measurement Techniques Setup for Most Tests Electronic Load General Measurement Techniques Current-Monitoring Resistor Programming Voltage and Current Values Constant Voltage (CV) Verifications Constant Voltage Test Setup Voltage Programming and Readback Accuracy Page CV Load Regulation CV Line Regulation Normal Mode Voltage Noise (CV Ripple and Noise) Common Mode Current Noise Load Transient Response Time Constant Current (CC) Verifications Constant Current Test Setup Current Programming and Readback Accuracy Page CC Load Regulation CC Line Regulation Normal Mode Current Noise (CC Ripple and Noise) Performance Test Record for Agilent E3631A 59 Performance Test Record for Agilent E3631A CV Performance Test Record Test Description Actual Result Specifications Upper Limit Lower Limit Performance Test Record for Agilent E3631A CC Performance Test Record Test Description Actual Result Specifications Upper Limit Lower Limit Calibration Security Code To Unsecure the Power Supply for Calibration secured 000000 code 003631 code unsecured To Unsecure the Power Supply Without the Security Code Calibration Count Calibration Message General Calibration/Adjustment Procedure cal mode cal setup 1 v lo +0.1 11 1000 v v lo +0.0860 v v hi +5.7000v v hi +5.9990v cal setup 2 i lo +0.100 a i lo +0.099 a i hi +4.750 a i hi +4.999 a cal setup 3 Aborting a Calibration in Progress Calibration Record for Agilent E3631A 72 Calibration Record for Agilent E3631A Step Calibration Description Measurement Mode (DVM) Supply being Adjusted Error Messages Page 75 Calibration Program 76 ...continued 77 ...continued Page Page Theory of Operation Block Diagram Overview Page AC Input and Bias Supplies Floating Logic Page D-to-A Converter A-to-D Converter Power Mesh and Control Page Earth-Referenced Logic Front Panel Page Service Operating Checklist Is the Power Supply Inoperative? Does the Power Supply Fail Self-Test? Types of Service Available Standard Repair Service (worldwide) Express Exchange (U.S.A. only) Repacking for Shipment Electrostatic Discharge (ESD) Precautions Surface Mount Repair To Replace the Power-Line Fuse Troubleshooting Hints Unit is Inoperative Unit Reports Errors 740 to 748 Unit Fails Self-Test Bias Supplies Problems Self-Test Procedures Power-On Self-Test Complete Self-Test Page Page Page Page 104 Replaceable Parts To Order Replaceable Parts 1 2 3 Backdating and Part Changes E3631-60002 Top PCB Assembly Page Page Page Page Page E3631-60003 VFD Assembly 111 E3631-60003 VFD Assembly E3631-60004 Bottom PCB Assembly Page Page Page E3631-60005 Front Frame Assembly 116 E3631-60005 Front Frame Assembly E3631-60005 Power SupplyAssembly Manufacturers List 117 Manufacturers List Page Page Page Page Schematics Page Page Page Page Page Page Page Page Page Page !