Fluke 2620A Additional Considerations, Using the IEEE-488 Interface, Advanced Trigger Mechanisms

Models: 2625A 2620A

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Contents (continued)

 

Autoprint: Computer Interface Control

4-5

 

Autoprint: Output Format

4-5

 

Memory Storage: Computer Interface Control

4-6

 

Memory Retrieval

4-6

 

Memory Full Operation

4-7

 

Clearing Memory

4-7

 

Cabling the Instrument to a Host or Printer (RS-232)

4-7

 

Installation Test

4-8

 

RS-232 Information

4-8

 

Character Echoing

4-8

 

Character Deletion

4-8

 

Device Clear Using Ctrl C

4-8

 

RS-232 Prompts

4-9

 

Sample Program Using the RS-232 Computer Interface

4-9

 

Using the IEEE-488 Interface

4-9

 

IEEE-488 Operating Limitations

4-9

 

Installing the IEEE-488 Interface

4-9

 

Enabling the IEEE-488 Interface

4-12

 

Installation Test

4-13

 

General Information (RS-232 and IEEE-488)

4-13

 

How the Instrument Processes Input

4-13

 

Input Strings

4-14

 

Input Terminators

4-14

 

Typical Input Strings

4-14

 

Sending Numeric Values to the Instrument (RS-232 and IEEE-488)

4-16

 

Sending Input Strings to the Instrument

4-16

 

How the Instrument Processes Output

4-16

 

Service Requests (IEEE-488 only) and Status Registers

4-17

 

Event Status and Event Status Enable Registers

4-19

 

Status Byte Register

4-19

 

Reading the Status Byte Register

4-20

 

Service Request Enable Register

4-21

 

Instrument Event Register

4-21

 

Computer Interface Command Set

4-22

5

Additional Considerations

5-1

 

Introduction

5-3

 

Measurement Rate

5-3

 

Advanced Trigger Mechanisms

5-3

 

Front Panel Trigger Control

5-3

 

Computer Interface Trigger Control

5-3

 

Both External and Monitor Alarms Disabled (Type 0)

5-4

 

External Trigger Enabled (Type 1)

5-4

 

Monitor Alarm Enabled (Type 2)

5-6

 

Thermal Voltages

5-6

 

When Measuring Resistance or Temperature (RTD)

5-6

 

True RMS Measurements

5-8

 

Effects of Internal Noise in AC Measurements

5-8

 

Waveform Comparison (True RMS vs Average Responding)

5-8

 

Making Mixed Measurements

5-9

 

Using Shielded Wiring

5-11

 

General Rule

5-11

 

Alternate Suggestions

5-11

 

Non-Isolated Sensor Configuration

5-11

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Fluke 2620A Additional Considerations, Using the IEEE-488 Interface, Computer Interface Command Set, True RMS Measurements