TABLE OF CONTENTS
Warranty After Title Page
List of Tables iv
List of Figures v
Section I, Description
General 1-1
Changes from Previous Versions 1-2
About This Manual 1-2
Section II, Specifications
General 2-1
Source Mode 2-1
Thermocouple Output Mode 2-1
Voltage Output Mode 2-2
Meter Mode 2-2
Supported Standards 2-2
General Instrument Specifications 2-2
Thermocouple-accuracy Tables 2-3
Section III, Unpacking and Installation
Shipment Contents 3-1
Unpacking 3-1
Model 1140A Installation 3-1
Packing for Shipment 3-1
Section IV, Operation
General 4-1
Front-panel Controls 4-1
Connections 4-1
Power 4-1
Menu Key 4-2
Enter Key (Operate/Standby) 4-2
Escape Key 4-2
Twelve-key Keypad 4-2
Four Arrow Keys 4-3
Encoder (Large Knob) 4-3
Operating Screen Main Display 4-3
Control 4-3
Mode 4-4
Offset 4-4
Reference-junction Temperature 4-4
Material 4-4
Thermocouple Type 4-4
Message Displays 4-6
Menus 4-8
Thermocouple Menu 4-8
Instrument Mode Menu 4-10
Output Menu 4-11
Memory Menu 4-12
Sequence Menu 4-14
Data Logging Menu and Downloading
Data 4-16
Display Menu 4-17
Remote Menu 4-18
Maintenance Menu 4-21
Diagnostics Menu 4-22
Section V, Applications
General 5-1
Functions 5-1
Source Mode 5-1
Meter Mode 5-1
Battery Operation 5-2
Connections 5-2
Thermocouple Connections 5-2
Temperature Variation 5-3
Considerations 5-3
Polarity of Thermocouple Wires 5-3
Shielding and the Guard Terminals 5-3
Grounding 5-4
ITS-90 and IPTS-68 5-4
Offset 5-4
Autozero 5-5
Low Output Impedance 5-5
Guard Bands 5-6
Section VI, Remote Operation
General 6-1
Remote Menu 6-1
Changing the Active Interface 6-1
Setting the Interface Address (GPIB Only) 6-1
Activating and De-activating Remote
Control 6-1
Model 1140A Commands 6-3
Source-mode Commands and Queries 6-3
Meter-mode Query 6-4
Thermocouple Commands and Queries 6-4
Instrument Commands and Queries 6-6
Output Commands and Queries 6-8
System Commands and Queries 6-9
Data Logging Queries 6-11
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