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Agilent Technologies 34970A - page 51

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System Overview

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Contents

Main Page Agilent 34970A Data Acquisition / S witch Unit The Front Panel at a Glance 1 State Storage / Remote Interface Menus Denotes a menu key. See the next page for details on menu operation. The Front-Panel Menus at a Glance Display Annunciators The Rear Panel at a Glance BenchLink Data Logger Software at a Glance The Plug-In Modules at a Glance 34901A 20-Channel Armature Multiplexer 34902A 16-Channel Reed Multiplexer 34903A 20-Channel Actuator / G eneral-Purpose Switch 34904A 4x8 Two-Wire Matrix Swit ch 34905/6A Dual 4-Channel RF Mul t iplexers 34907A Multifunction Module 34908A 40-Channel Single-Ended Multiplexer In This Book Contents Contents Contents Contents Contents Page Quick Start To Prepare the Instrument for Use Installing BenchLink Data Logger Software Installation Procedure Creating Installation Floppy Disks On-Line Help System To Connect Wiring to a Module Page To Set the Time and Date 7,0(30 -81 To Configure a Channel for Scanning Page To Copy a Channel Configuration 3$67(72 To Close a Channel If the Instrument Does Not Turn On Page Page To Rack Mount the Instrument Page Page Page Front-Panel Overview Front-Panel Menu Reference 35 Chapter 2 Front-Panel Overview Front-Panel Menu Reference 36 To Monitor a Single Channel To Set a Scan Interval ,17(59$/6&$1 6&$16 To Apply Mx+B Scaling to Measurements , ,9'& /$%(/$6/%6 To Configure Alarm Limits 86($/$50 +,$/$5021/< ,& To Read a Digital Input Port ',1 To Write to a Digital Output Port '287 '287 To Read the Totalizer Count 5($'5(6(7 727 To Output a DC Voltage 9'$& 9'$& To Configure the Remote Interface +3,% $''5(66 56 %$8' (9(1,%,76 )/2:'75'65 To Store the Instrument State Page System Overview Data Acquisition System Overview The Computer and Interface Cable Measurement Software The 34970A Data Acquisition / Switch Unit Plug-In Modules System Cabling Transducers and Sensors Alarm Limits Signal Routing and Switching Switching Topologies Page Page Measurement Input The Internal DMM Page Scanning Page Scanning With External Instruments The Multifunction Module Page Control Output The Multifunction Module Page The Actuator / General-Purpose Switch Page Page Features and Functions SCPI Language Conventions Rules for Using a Channel List Scanning Rules for Scanning Page Page Power Failure Adding Channels to a Scan List Page Scan Interval Page Page Page Page Page Scan Count Reading Format Channel Delay Automatic Channel Delays 89 DC Voltage, Thermocouple, DC Current (for all ranges): Resistance, RTD, Thermistor (2- and 4-wire): AC Voltage, AC Current (for all ranges): Viewing Readings Stored in Memory Page Page Single-Channel Monitoring Page Scanning With External Instruments Page Page General Measurement Configuration Measurement Range Page Measurement Resolution 9'& P9'& ,2+0 Page Page Custom A/D Integration Time Page Autozero Temperature Measurement Configuration Measurement Units Thermocouple Measurements Page Page RTD Measurements Page Thermistor Measurements Voltage Measurement Configuration DC Input Resistance AC Low Frequency Filter Resistance Measurement Configuration Offset Compensation Current Measurement Configuration AC Low Frequency Filter Page Frequency Measurement Configuration Low Frequency Timeout Mx+B Scaling Page Page Alarm Limits Page Page Page Viewing Stored Alarm Data Page Using the Alarm Output Lines Page Using Alarms With the Multifunction Mo dule ;%,1 Page Page Digital Input Operations Page Totalizer Operations Page Page Digital Output Operations DAC Output Operations System-Related Operations State Storage Page Error Conditions Self-Test Display Control Real-Time System Clock Internal DMM Disable Firmware Revision Query Relay Cycle Count Page SCPI Language Version Query Remote Interface Configuration GPIB Address Remote Interface Selection Baud Rate Selection (RS-232) Parity Selection (RS-232) Flow Control Selection (RS-232) Page Calibration Overview Calibration Security Page Page Calibration Message Calibration Count Factory Reset State 160 Chapter 4 Features and Functions Factory Reset State Instrument Preset State 161 Chapter 4 Features and Functions Instrument Preset State Multiplexer Module Default Settings 162 Chapter 4 Features and Functions Multiplexer Module Default Settings Module Overview 34901A 20-Channel Multiplexer 164 Chapter 4 Features and Functions 34901A 20-Channel Multiplexer Chapter 4 Features and Functions 34901A 20-Channel Multiplexer 165 34902A 16-Channel Multiplexer Chapter 4 Features and Functions 34902A 16-Channel Multiplexer 167 34903A 20-Channel Actuator Chapter 4 Features and Functions 34903A 20-Channel Actuator 169 34904A 4x8 Matrix Switch Chapter 4 Features and Functions 34904A 4x8 Matrix Switch 171 34905A/6A Dual 4-Channel RF Multiplexers Chapter 4 Features and Functions 34905A/6A Dual 4-Channel RF Multiplexers 173 34907A Multifunction Module Digital Input/Output Totalize Input Analog Output (DAC) Chapter 4 Features and Functions 34907A Multifunction Module 175 Chapter 4 Features and Functions 34908A 40-Channel Single-Ended Multiplexer 176 Chapter 4 Features and Functions 34908A 40-Channel Single-Ended Multiplexer 177 Page Page Remote Interface Reference SCPI Command Summary Rules for Using a Channel List Rules for Using scan_list and ch_list Parameters Scan Measurement Commands (see page 226 for more information) Monitor Commands (see page 237 for more information) 183 SCPI Command Summary Scan Configuration Commands (see page 226 for more information) SCPI Command Summary 184 Scan Statistics Commands (see page 233 for more information) Scan Memory Commands (see page 235 for more information) 185 SCPI Command Summary Scanning With an External Instrument (see page 239 for more information) SCPI Command Summary 186 Temperature Configuration Commands (see page 219 for more information) SCPI Command Summary 187 Voltage Configuration Commands (see page 223 for more information) SCPI Command Summary 188 Resistance Configuration Commands (see page 224 for more information) SCPI Command Summary 189 SCPI Command Summary 190 Frequency and Period Configuration Commands (see page 214 for more information) SCPI Command Summary 191 Mx+B Scaling Commands (see page 244 for more information) SCPI Command Summary 192 Alarm Limit Commands (see page 247 for more information) SCPI Command Summary 193 Digital Input Commands (see page 255 for more information) Totalizer Commands (see page 256 for more information) 194 [SENSe:]TOTalize:CLEar:IMMediate [(@<ch_ list>)] [SENSe:]TOTalize:DATA? [(@<ch_ list>)] SCPI Command Summary Digital Output Commands (see page 258 for more information) DAC Output Commands (see page 258 for more information) 195 Switch Control Commands (see page 259 for more information) SCPI Command Summary Page System-Related Commands (see page 264 for more information) SCPI Command Summary 197 Interface Configuration Commands (see page 269 for more information) Status System Commands (see page 286 for more information) 198 SCPI Command Summary Calibration Commands (see page 292 for more information) Service-Related Commands (see page 294 for more information) 199 SCPI Command Summary Page Simplified Programming Overview Using the MEASure? Command Using the CONFigure Command Using the range and resolution Parameters Using the READ? Command Using the INITiate and FETCh? Commands Page Page The MEASure? and CONFigure Commands Page Page Page Page Page Page Setting the Function, Range, and Resolution Page Page Page Page Temperature Configuration Commands Page Page Page Voltage Configuration Commands Resistance Configuration Commands Current Configuration Commands Frequency Configuration Commands Scanning Overview Rules for Scanning Scan Interval Page Page Page Page Page Page Page Page Page Single-Channel Monitoring Overview Page Scanning With an External Instrument Page Page Page Page Mx+B Scaling Overview Page Page Alarm System Overview Page Page Page Page Page Page Page Digital Input Commands Totalizer Commands Page Digital Output Commands DAC Output Commands Switch Control Commands Page State Storage Commands Page Page System-Related Commands Page Page Page Page Interface Configuration Commands RS-232 Interface Configuration RS-232 Configuration Overview RS-232 Flow Control Modes RS-232 Data Frame Format Connection to a Computer or Terminal RS-232 Troubleshooting Modem Communications The SCPI Status System What is a Condition Register? What is an Event Register? What is an Enable Register? Agilent 34970A Status System Alarm Register Questionable Data Register 276 Output Buffer Status Byte Register The Status Byte Register Using Service Request (SRQ) and Serial Poll Using *STB? to Read the Status Byte Using the Message Available Bit (MAV) To Interrupt Your Bus Controller Using SRQ To Determine When a Command Sequence is Completed The Questionable Data Register Page The Standard Event Register Page The Alarm Register The Standard Operation Register Status System Commands Page Page Page Page Page Calibration Commands Page Service-Related Commands Page An Introduction to the SCPI Language Command Format Used in This Manual Command Separators Using the MIN and MAX Parameters Querying Parameter Settings SCPI Command Terminators IEEE-488.2 Common Commands SCPI Parameter Types Page Using Device Clear Page Error Messages Execution Errors Page Page Page Instrument Errors Page Page Page Page Self-Test Errors Page Page Plug-In Module Errors Page Page Application Programs Example Programs for Excel 7.0 Page Page Page Page Page Page Example Programs for C and C++ Page Page Page Page Page Tutorial System Cabling and Connections Cable Specifications Page Grounding Techniques Shielding Techniques Separation of High-Level and Low-Level Signals Sources of System Cabling Errors Page Page Measurement Fundamentals The Internal DMM Page Temperature Measurements Page Page Page Page Page Thermocouple Types Chapter 8 Tutorial Measurement Fundamentals 351 Sources of Error in Thermocouple Measurements Page DC Voltage Measurements Sources of Error in DC Voltage Measurements Page Page Page AC Voltage Measurements Page Page Sources of Error in AC Voltage Measurements Page Page Page Page Current Measurements Sources of Error in DC Current Measurements Sources of Error in AC Current Measurements Resistance Measurements Page Page Sources of Error in Resistance Measurements Strain Gage Measurements Page Page Frequency and Period Measurements Page Low-Level Signal Multiplexing and Switch in g One-Wire (Single-Ended) Multiplexers Two-Wire Multiplexers Four-Wire Multiplexers Signal Routing and Multiplexing Sources of Error in Multiplexing and Switching Page Actuators and General-Purpose Switching Snubber Circuits RC Protection Networks Using Varistors Using Attenuators Matrix Switching Combining Matrices RF Signal Multiplexing Sources of Error in RF Switching Multifunction Module Digital Input Digital Output Using an External Pull-Up Driving External Switches Totalizer Totalizer Errors Voltage (DAC) Output DAC Errors Relay Life and Preventative Maintenance Relay Life Relay Load Switching Frequency Replacement Strategy Page 9 Specifications DC, Resistance, and Temperature Accuracy Specifications 404 DC, Resistance, and Temperature Accuracy Specifications DC Measurement and Operating Characteristics 405 DC Measurement Characteristics DC Operating Characteristics AC Accuracy Specifications 406 AC Accuracy Specifications AC Measurement and Operating Characteristics AC Measurement Characteristics 407 AC Operating Characteristics AC Measurement and Operating Characteristics Measurement Rates and System Characteristics 408 Single Channel Measurement Rates N10149 34901A, 34902A, 34908A, 34 903A, 34904A 409 34905A, 34906A The ac performance graphs are shown on the following page. 410 Typical AC Performance Graphs Software Specifications 34907A 412 Digital Input / Output Product and Module Dimensions To Calculate Total Measurement Error If you are operating the internal DMM outside the 23 C Page Interpreting Internal DMM Specifications Number of Digits and Overrange Sensitivity Resolution Accuracy 24-Hour Accuracy 90-Day and 1-Year Accuracy Temperature Coefficients Configuring for Highest Accuracy Measurements Page Index A IndexIndex B C D E F G H I J K L M N O P Q R S Page T U V W X Z Page Manual Part Number Edition Assistance Trademark Information Certification DECLARATION OF CONFORMITY

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