ADCMT 6244 - Reducing Stray Capacitance and Lead Inductance

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6243/44 DC Voltage Current Source/Monitor Operation Manual

4.1.4 Oscillation Prevention

4-6

Figure 4-4 Reducing Stray Capacitance and Lead Inductance

Main Page

Table of Contents13
Introduction23
Product Overview23
Output Range24
Supplied Accessories25
List of Standard Accessories25
AC Power Plug Types26
Optional Accessories27
List of Optional Accessories27
Operating Environment28
Environmental Conditions28
Power Supply Conditions29
Operating Environment29
Power Specifications29
Changing the Source Voltage Setting and Checking/Replacing the Fuse30
Power Cable31
Warm-Up (Preheating Time)31
Operational Check32
Connecting the Power Cable32
Display During Self Test33
Display When Self Test Is Completed33
Start-Up Screen33
VSVM Measurement (in Output off Standby)34
VSVM 320 MV Range 0 V Measurement34
Setting the Line Frequency35
Cleaning, Storage, and Transport Methods37
Cleaning37
Storage37
Transport37
Calibration38
Parts with a Limited Life Span38
Operation39
Panel Descriptions39
Front Panel Summary39
Front Panel39
LIMIT Key (Limiter Setting)40
Front Panel40
MENU Key (Setting Parameters)41
Screen Display43
Screen Element Descriptions43
Rear Panel Summary45
Rear Panel45
Basic Operations48
Setting the Source and Limiter Values48
2.2.2 Menu Operations and Parameter Settings51
Menu Structure (MENU Key)52
DC Measurement53
Explanatory Drawing of DC Measurement53
Pulse Mode Measurement57
Sweep Mode Measurement62
SWEEP (Sweep Parameters)63
Measurement Example68
Connections for Diode Measurement69
Battery Charge Test and Discharge Test74
Waveform of Battery Discharge Test75
Connections for Battery Charge and Discharge Test76
Saving and Loading Parameters81
Parameter Saving and Loading Operations81
Menu Index83
Menu Map85
Panel Keys and Parameters89
AUTO Key (Measurement Range)89
DIRECT Key (Direct Input Mode)89
ENTER (DIRECT) Key (Confirming Numeric Values)89
EXIT Key (Normal Measurement Screen)89
GP-IB LOCAL Key (GPIB Remote Control)89
TIME (Time Parameters)92
SOURCE (Source Parameters)92
MEASURE (Measurement Parameters)93
COMPARATOR (Comparison Operation Parameters)94
EXT.SIGNAL (External Control Signal Parameters)94
SYSTEM (System Parameters)96
RANDOM MEMORY (Random Memory Settings)97
MEASURE BUFFER (Measurement Buffer Memory)97
PARAMETER SAVE (Saving Parameters)98
PARAMETER LOAD (Loading Parameters)98
MODE Key (Source Mode)99
NULL Key (NULL Calculation)99
OPERATE Key (Output ON/OFF)99
POLARITY Key (Source Polarity)99
RANGE Key (Source Range)100
RECALL Key (Measurement Data Recall)100
RUN HOLD Key (Measurement Free Run/Hold)100
START TRIGGER Key (Sweep Start, Measurement Trigger)100
STOP Key (Sweep Stop)100
VM/IM Key (Measurement Functions)101
VS/IS Key (Source Functions)101
List of Settings102
6243 Setting Ranges and Factory Settings102
6244 Setting Ranges and Factory Settings104
Practical Guide for Measurements107
DUT Connection107
Internal Wiring107
Remote Sensing (2-Wire/4-Wire Connection)108
Internal Wiring108
Driving Guard (6243 Only)111
Oscillation Prevention111
SMU (Source Measurement Unit) Oscillation Prevention111
Reducing Stray Capacitance and Lead Inductance112
Oscillation of the Device Itself113
Device Oscillation Prevention113
SMU Oscillation Prevention113
Connection for High-Current Measurement114
Connection for Heavy-Current Measurement114
Allowable Current and Wire Diameter114
Connecting to the Fixture 12701A115
Connecting to the 12701A115
Operation in the DC Source Mode116
Operation in the Pulse Source Mode118
Operation in the Sweep Source Mode120
Staircase Sweep121
Sweep Types for Staircase Sweep121
Staircase Sweep (One-Way Sweep)122
Pulse Sweep123
Sweep Types for Pulse Sweep123
Random Sweep and Random Pulse Sweep125
Operations of Random Sweep and Random Pulse Sweep125
Round-Trip Sweep (Reverse ON)126
Source Functions127
Changing the Source Mode and Source Function127
4.5.2 Source Value Restrictions128
Source Value Setting Range128
Source Range129
Range and Data Differences in Accordance with Range Specification (Example: Showing DC Sweep with 6243)130
Range Operation During Sweep131
Polarity Change132
Sweep Operation Straddling Polarities133
Reverse Polarity Source Operation134
Measurement Function135
Measurement Ranging135
Current Measurement in Auto Range and Limiter Operation136
Auto Ranging During Sweep Mode Measurement138
Auto-Zero Function139
Limiter (Compliance)140
Limiter Setting Ranges140
Limiter Setting Range in Relation to the Source Value140
Range in Relation to the Limiter Setting Value141
Range in Relation to the Limiter Setting Value142
Limiter Polarity Mode143
Alarm Detection144
Alarm Detection Contents144
Source Timing and Measurement Timing146
Source Mode and Time Parameters to be Considered146
4.9.1 Restrictions on Time Parameters147
Output Waveform in Accordance with Time Parameters149
Measure Delay and Settling Time150
Auto Range Delay154
4.10 Computing Functions156
Timing of NULL Calculation156
Comparator Calculation157
4.11 External Control Signals158
External Control Signal Functions158
Timing of External Control Signals160
Control of Scanner161
4.12 Synchronized Operation, Serial Connection, and Parallel Connection162
Synchronized Operation162
Synchronized Operation Using the BUSY Signal163
Serial Connection164
4.12.3 Parallel Connection165
4.13 Measurement Data Storing Function166
Storing Measured Data into Data Memory (Memory Store)166
Conceptual Diagram of Storing Measured Data166
Comparison of Storing Measured Data167
Clearing Saved Data (Memory Clear)168
4.14 Operating Principles169
Block Diagram of Source and Measurement Sections169
Operating Principles170
GPIB Command Index171
GPIB Remote Programming174
What GPIB Is174
GPIB Setup174
GPIB Interface Functions177
Responses to Interface Messages177
5.2.5 Message Exchange Protocol179
Command Syntax179
Data Format179
Data Format180
5.2.8 Status Byte181
Status Byte Register181
Standard Event Register181
Device Event Register181
Error Register181
Structure of Status Registers182
Structure of Status Byte Register183
Date Output Format (Talker)188
GPIB Code List191
GPIB Command List191
TER? Command Response200
Program Example 2: Pulse Measurement204
Program Example 4: Diode Measurement208
Compatibility with Tr6143213
Setting the TR6143 Mode213
Differences between the TR6143 Mode and the Original Mode215
List of Defaults in the TR6143 Mode217
6243 Default Values217
6244 Default Values219
GPIB in the TR6143 Mode221
TR6143 Mode GPIB Code List221
TR6143 Mode Unique Commands222
Commands that Cannot be Used in the TR6143 Mode223
Data Output Format in the TR6143 Mode (Talker)224
Status Byte in TR6143 Mode232
Status Bytes in the TR6143 Mode232
Performance Tests233
6243 Tests233
Measuring Instruments Required for Performance Tests233
Connections233
Test Methods233
Measuring Instruments Required for Performance Tests235
Connections235
Test Methods235
Calibration239
Cables and Measuring Instruments Required for Calibration239
Safety Precautions240
Connections241
Connections for Calibration241
8.1.4 Calibration Points and Tolerance Range242
Calibration Procedure242
Overview of the Calibration Procedure242
Initializing Calibration Data247
Cables and Measuring Instruments Required for Calibration248
Safety Precautions248
Connections249
Connections for Calibration249
Calibration Points and Tolerance Range250
Calibration Procedure250
Overview of Calibration Procedure250
8.2.6 Initializing Calibration Data255
Specifications257
Voltage/Current Source257
Voltage/Current Measurement262
Source and Measurement Functions265
Setting Time266
General Specifications267
6244 Specifications268
Voltage/Current Source268
9.2.2 Voltage/Current Measurement273
Source and Measurement Functions276
Setting Time277
General Specifications279
Appendix281
When Problems Occur (before Requesting Repairs)281
Inspection Items before Requesting Repairs281
A.2 Error Message List283
Execution Time287
GPIB Remote Execution Time (Nominal Values287
Internal Execution Time (Nominal Values288
Alphabetical Index294

ADCMT 6244 - Reducing Stray Capacitance and Lead Inductance

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