Agilent Technologies 34970A manual +In

Page 68

Chapter 3 System Overview

Measurement Input

Totalizer The multifunction module has a 26-bit totalizer which can count pulses at a 100 kHz rate. You can manually read the totalizer count or you can configure a scan to read the count.

 

+IN

26 Bits

-IN

Channel 03

Totalize

 

Gate

 

Gate

•You can configure the totalizer to count on the rising edge or falling edge of the input signal.

•The maximum count is 67,108,863 (226- 1). The count rolls over to “0” after reaching the maximum allowed value.

•You can configure the totalizer to read without affecting the count or reset the count to zero without losing any counts.

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Contents Agilent 34970A Data Acquistion/Switch Unit User’s GuidePage Convenient Data Logging Features Flexible Data Acquisition/Switching FeaturesFront Panel at a Glance Front-Panel Menus at a Glance Display Annunciators AdrsRear Panel at a Glance Use the Menu toBenchLink Data Logger Software at a Glance For detailed information and a module diagram, see Plug-In Modules at a Glance34901A 20-Channel Armature Multiplexer 34902A 16-Channel Reed Multiplexer34905/6A Dual 4-Channel RF Multiplexers 34903A 20-Channel Actuator/General-Purpose Switch34904A 4x8 Two-Wire Matrix Switch 34908A 40-Channel Single-Ended Multiplexer For detailed information and module block diagrams, see34907A Multifunction Module This Book Contents Contents Remote Interface Reference Application Programs Quick Start Quick Start Connect the power cord and turn on the instrument To Prepare the Instrument for UseTo Prepare the Instrument for Use Check the list of supplied itemsInstalling BenchLink Data Logger Software Installing BenchLink Data Logger SoftwareInstallation Procedure Creating Installation Floppy Disks On-Line Help SystemTo Connect Wiring to a Module To Connect Wiring to a ModuleWire Ohms / RTD / Thermistor Wire Ohms / RTDThermocouple DC Voltage / AC Voltage / Frequency DC Current / AC CurrentTo Set the Time and Date To Set the Time and DateSet the time of day Set the dateTo Configure a Channel for Scanning To Configure a Channel for ScanningSelect the channel to be added to the scan list Select the measurement parameters for the selected channelRun the scan and store the readings in non-volatile memory View the data from the scanTo Copy a Channel Configuration To Copy a Channel ConfigurationTo Close a Channel To Close a ChannelSelect the channel Close the selected channel Open the selected channelVerify that there is ac power to the instrument Verify the power-line voltage settingVerify that the power-line fuse is good If the Instrument Does Not Turn OnReplace the fuse-holder assembly in the rear panel Bench-top viewing positions To Adjust the Carrying HandleTo Adjust the Carrying Handle To Rack Mount the Instrument To Rack Mount the InstrumentQuick Start Page Front-Panel Overview Front-Panel Overview Front-Panel Menu Reference Front-Panel Menu ReferenceConfigure system-related instrument parameters Enable monitoring on the selected channel To disable monitoring, press againTo Monitor a Single Channel To Monitor a Single ChannelSelect the interval scan mode To Set a Scan IntervalTo Set a Scan Interval Select the scan countTo Apply Mx+B Scaling to Measurements To Apply Mx+B Scaling to MeasurementsTo Configure Alarm Limits To Configure Alarm LimitsSelect which of the four alarms you want to use Select the alarm mode on the selected channelSet the limit value To Read a Digital Input Port To Read a Digital Input PortSelect the Digital Input port Read the specified portTo Write to a Digital Output Port To Write to a Digital Output PortConfigure the totalize mode To Read the Totalizer CountTo Read the Totalizer Count Select the totalizer channelTo Output a DC Voltage To Output a DC VoltageSelect a DAC Output channel Output the voltage from the selected DACTo Configure the Remote Interface To Configure the Remote InterfaceSelect the Gpib Hpib interface Select the Gpib addressSelect the RS-232 interface Select the baud rate Select the parity and number of data bitsSelect the flow control method Save the changes and exit the menuTo Store the Instrument State To Store the Instrument StateSelect the storage location Store the instrument stateSystem Overview Data Acquisition System Overview Control Output, starting onAdvantages Disadvantages Computer and Interface CableData Acquisition System Overview Measurement Software Agilent BenchLink Data Logger34970A Data Acquisition / Switch Unit Model Number Module Name Common Uses Signal RoutingPlug-In Modules Cable Type Common Uses Comments System CablingSystem Cabling and Connections starting on Alarm Limits Transducers and SensorsSignal Routing and Switching Signal Routing and SwitchingSwitching Topologies Multiplexers are available in several types Channel Open Measurement Input Measurement InputInternal DMM Measurement Input Scanning Scan Count Scanning With External Instruments Multifunction Module +IN Control Output Control OutputDAC Actuator / General-Purpose Switch Page Features and Functions Mx+B Scaling, starting on Alarm Limits, starting on Scanning, starting onScpi Language Conventions Rules for Using a Channel ListScpi Language Conventions Scanning ScanningRules for Scanning Scanning Or disable it see Internal DMM Disable on Power Failure Adding Channels to a Scan List To Build a Scan List From the Front PanelTo Build a Scan List From the Remote Interface Scan Interval Select the interval timer configuration See Scan Count on page 86 for more informationSet the scan interval to 5 seconds Sweep the scan list 2 timesGroup Execute Trigger Select the bus once configurationFront-Panel Operation Ext Trig Connector Select the external trigger configurationOn page 86 for more information Select the alarm configuration Enable the upper limitReport alarms on Alarm Enable monitoringScan Count Remote Interface OperationReading Format Channel Delay Automatic Channel Delays Integration Time Channel DelayRange Channel Delay AC Filter Channel DelayViewing Readings Stored in Memory Readings Minimum reading on channel Time minimum was loggedMaximum reading on channel Time maximum was loggedSingle-Channel Monitoring Single-Channel MonitoringROUTMONDATA? Scanning With External Instruments Scanning With External InstrumentsScanning With External Instruments Select the scan interval Select the channel advance sourceMeasurement Range General Measurement ConfigurationGeneral Measurement Configuration MV Range Measurement Resolution Integration Time, on page 103 for more information 102 Custom A/D Integration Time PLC104 Autozero Measurement Units Temperature Measurement ConfigurationTemperature Measurement Configuration Thermocouple Measurements 108 Remote Interface Operation You can use the MEASure? or RTD Measurements To connect an RTD to the module’s screw terminals, see111 Thermistor Measurements To connect a thermistor to the module’s screw terminals, seeVoltage Measurement Configuration Voltage Measurement ConfigurationDC Input Resistance Applies to dc voltage measurements onlySensvoltacband 3,@203 Select the slow filter 3 Hz AC Low Frequency FilterApplies to ac voltage and ac current measurements only Resistance Measurement Configuration Resistance Measurement ConfigurationOffset Compensation To connect resistances to the module’s screw terminals, seeApplies to ac current and ac voltage measurements only Current Measurement ConfigurationCurrent Measurement Configuration Senscurracband 3,@221 Select the slow filter 3 Hz Frequency Measurement Configuration Low Frequency TimeoutFrequency Measurement Configuration Sensfreqranglow 3,@203 Select the slow timeout 3 HzMx+B Scaling Mx+B Scaling= − GF x R 121 Alarm Limits Alarm LimitsAlarm Limits Alarm Event No Alarm Upper Limit Lower Limit Then, choose from the following alarm conditions Viewing Stored Alarm Data 127 Using the Alarm Output Lines Alarms ConnectorClear alarm output line Clear all four alarm outputsUsing Alarms With the Multifunction Module Following commands also see the example on the following Calccompdata command decimal Calccompmask command decimalResult no alarm generated Data read from port decimalDigital Input Operations Digital Input OperationsAdd port 02 read to scan list Read portRead both ports together Totalizer Operations Totalizer Operations136 137 Digital Output Operations Digital Output OperationsWrite to port Write to both portsThree slots six DAC channels DAC Output OperationsDAC Output Operations System-Related Operations System-Related OperationsState Storage 141 Error Conditions Self-Test Returns 0 if the self-test is successful or 1 if it failsDisplay Control Internal DMM Disable Real-Time System ClockSet time to 345 PM Set date to June 1Firmware Revision Query HEWLETT-PACKARD,34970A,0,X.X-Y.Y-Z.ZRelay Cycle Count 148 Scpi Language Version Query You cannot query the Scpi version from the front panelRemote Interface Configuration Remote Interface ConfigurationGpib Address You can set the Gpib address from the front panel onlyRemote Interface Selection Baud Rate Selection RS-232 Parity Selection RS-232You can set the baud rate from the front panel only You can set the parity from the front panel onlyFlow Control Selection RS-232 154 Calibration Overview Calibration OverviewCalibration Security 156 Unsecure with old code Enter new codeCalibration Message Calibration Count Factory Reset State Factory Reset StateInstrument Preset State Instrument Preset StateMultiplexer Module Default Settings Multiplexer Module Default SettingsModule Overview Module Overview34901A 20-Channel Multiplexer 34901A 20-Channel MultiplexerSlot Number Name Function Comments34902A 16-Channel Multiplexer 34902A 16-Channel Multiplexer167 34903A 20-Channel Actuator 34903A 20-Channel Actuator169 34904A 4x8 Matrix Switch 34904A 4x8 Matrix SwitchName Comments 34905A/6A Dual 4-Channel RF Multiplexers 34905A/6A Dual 4-Channel RF Multiplexers173 34907A Multifunction Module Digital Input/OutputTotalize Input Analog Output DACSlot Number 100 200 Digital Input / OutputTotalizer DAC Output34908A 40-Channel Single-Ended Multiplexer 34908A 40-Channel Single-Ended Multiplexer177 178 Remote Interface Reference Scanning Overview, starting on Totalizer Commands, starting onCalibration Commands, starting on Scpi Command Summary Scpi Command SummaryRules for Using scanlist and chlist Parameters Scpi Command Summary Scan Measurement Commands Monitor CommandsSee page 226 for more information See page 237 for more informationScpi Command Summary Scan Configuration Commands FORMatScpi Command Summary Scan Statistics Commands Scan Memory CommandsSee page 233 for more information See page 235 for more informationScpi Command Summary Scanning With an External Instrument See page 239 for more informationScpi Command Summary Temperature Configuration Commands See page 219 for more informationScpi Command Summary Voltage Configuration Commands See page 223 for more informationScpi Command Summary Resistance Configuration Commands See page 224 for more informationScpi Command Summary Current Configuration Commands See page 214 for more information Scpi Command Summary Mx+B Scaling Commands See page 244 for more informationScpi Command Summary Alarm Limit Commands See page 247 for more informationScpi Command Summary Digital Input Commands Totalizer CommandsSee page 255 for more information See page 256 for more informationScpi Command Summary Digital Output Commands DAC Output CommandsSwitch Control Commands See page 258 for more informationScpi Command Summary Scan Triggering Commands State Storage CommandsSee page 228 for more information See page 261 for more informationScpi Command Summary System-Related Commands See page 264 for more informationScpi Command Summary Interface Configuration Commands Status System CommandsSee page 269 for more information See page 286 for more informationScpi Command Summary Calibration Commands Service-Related CommandsSee page 292 for more information See page 294 for more informationScpi Command Summary Ieee 488.2 Common Commands Simplified Programming Overview Simplified Programming OverviewUsing the MEASure? Command Using the CONFigure CommandUsing the range and resolution Parameters Using the READ? Command Using the INITiate and FETCh? Commands205 Trigsour EXT Init FETC? MEASure? and CONFigure Commands MEASure? and CONFigure CommandsMEASure? Command Syntax MEASureTEMPerature?5 TCouple,BEJKNRSTDEFMEASureVOLTageDC? MEASureVOLTageAC? RangeAUTOMINMAXDEF MEASureTEMPerature? RTDFRTD,8591DEFMEASureTEMPerature? THERmistor,2252500010000DEF On the 34901A multiplexer module MEASureRESistance? MEASureFRESistance? RangeAUTOMINMAXDEFMEASureCURRentDC? MEASureCURRentAC? RangeAUTOMINMAXDEF MEASureTOTalize? READRRESet ,@scanlist MEASureDIGitalBYTE? @scanlistMEASure? and CONFigure Commands CONFigure Command Syntax CONFigureTEMPerature TCouple,BEJKNRSTDEFCONFigureTEMPerature RTDFRTD,8591DEF CONFigureTEMPerature THERmistor,2252500010000DEFCONFigureCURRentDC CONFigureCURRentAC RangeAUTOMINMAXDEF CONFigureVOLTageDC CONFigureVOLTageAC RangeAUTOMINMAXDEFCONFigureRESistance CONFigureFRESistance RangeAUTOMINMAXDEF CONFigureFREQuency CONFigurePERiod RangeAUTOMINMAXDEF CONFigureDIGitalBYTE @scanlistCONFigureTOTalize READRRESet ,@scanlist CONFigure? @chlistSetting the Function, Range, and Resolution Setting the Function, Range, and ResolutionSee also General Measurement Configuration in starting on SENSeFUNCtion function,@chlistSetting the Function, Range, and Resolution Setting the Function, Range, and Resolution Setting the Function, Range, and Resolution Setting the Function, Range, and Resolution Temperature Configuration Commands General Temperature CommandsSENSeTEMPeratureTRANsducer SENSeTEMPerature Nplc 0.020.2121020100200MINMAX,@chlistTemperature Configuration Commands Thermocouple Commands SENSeTEMPeratureRJUNction? @ch list Temperature Configuration Commands RTD Commands Thermistor CommandsVoltage Configuration Commands See also Voltage Measurement Configuration in starting onINPut SENSe Zeroauto OFFONCEON,@chlist ZEROAUTO? @chlistSee also Current Measurement Configuration in starting on Resistance Configuration CommandsCurrent Configuration Commands See also Frequency Measurement Configuration in starting on Frequency Configuration CommandsFrequency Configuration Commands See also Scanning in starting on Scanning OverviewScanning Overview Scan Interval Scanning Overview Scanning Commands TRIGger SOURce BUSIMMediateEXTernalALARm1234TIMer SOURce?ROUTe Scan @scanlist SCAN? ROUTeSCANSIZE?TRIGger COUNt countMINMAXINFinity COUNt? TRIGger TIMer secondsMINMAX TIMer?ROUTe CHANnelDELay seconds,@ch list CHANnelDELay? @chlist INITiate ROUTeABORt FORMat READingCHANnel Offon READingCHANnel? Scanning Overview Reading Format CommandsFORMat READingALARm Offon READingALARm? FORMat READingTIMETYPE ABSoluteRELative READingTIMETYPE? FORMat READingTIME Offon READingTIME?FORMat READingUNIT Offon READingUNIT? Scanning Overview Scan Statistics Commands CALCulateAVERageMINimum? @chlistCALCulateAVERageMINimumTIME? @chlist CALCulateAVERageMAXimum? @chlistCALCulateAVERageAVERage? @chlist CALCulateAVERagePTPeak? @chlistCALCulateAVERageCOUNt? @chlist CALCulateAVERageCLEar @chlistDATAREMove? numrdgs Scanning Overview Scan Memory CommandsDATAPOINts? FETCh? See Reading Format Commands onSYSTemTIMESCAN? Single-Channel Monitoring Overview Single-Channel Monitoring OverviewROUTeMONitorDATA? ROUTe MONitor @channel MONitor?ROUTe MONitorSTATe Offon MONitorSTATe? Scanning With an External Instrument TRIGger SOURce BUSIMMediateEXTernalTIMer SOURce? TRIGger COUNt valueMINMAXINFinity COUNt? Scanning With an External Instrument INSTrumentDMMINSTalled? INSTrumentSee also Mx+B Scaling in starting on Mx+B Scaling OverviewMx+B Scaling Overview Mx+B Scaling Overview Mx+B Scaling Commands CALCulateCALCulateSCALeOFFSetNULL @chlist See also Alarm Limits in starting on Alarm System OverviewAlarm System Overview Alarm System Overview Calclimitupper MAX,@101LOWER 9,@101LOWERSTATE on CALCulate LIMitUPPer value,@ch list LIMitUPPer? @chlist Alarm System Overview Alarm Limit CommandsOUTPut ALARm1234SOURce @chlist ALARm1234SOURce? SYSTemALARm? CALCulate LIMitLOWer value,@ch list LIMitLOWer? @chlistOUTPut ALARmSLOPe NEGativePOSitive ALARmSLOPe? Alarm System Overview Alarm Output CommandsOUTPut ALARmMODE LATChTRACk ALARmMODE? Digital I/O Alarm Commands COMPareDATA? @chlistCOMPareMASK mask,@chlist COMPareMASK? @chlist SENSeDIGitalDATABYTEWORD? @chlist Digital Input CommandsSee also Digital Input Operations in starting on See also Totalizer Operations in starting on Totalizer CommandsSENSe TOTalizeTYPE READRRESet,@chlist TOTalizeTYPE? @chlist SENSeTOTalizeDATA? @chlist Commands see Reading Format Commands onSENSeTOTalizeCLEarIMMediate @chlist Digital Output Commands DAC Output CommandsSOURceDIGitalSTATe? @chlist SOURceSwitch Control Commands This is equivalent to pressing from the front panel ROUTeDONE?SYSTemCPON 100200300ALL RCL State Storage CommandsSAV MEMorySTATe Name 12345 ,name NAME? MEMorySTATeDELeteMEMoryNSTates? RECallAUTO?MEMorySTATeVALid? System-Related Commands See also System-Related Operations in starting onSYSTemDATE yyyy,mm,dd SYSTemDATE?IDN? SYSTemCTYPe?DISPlayTEXTCLEar DISPlay Offon DISPlay?DISPlay SYSTemPRESet INSTrument DMM OffonSYSTemVERSion? SYSTemERRor?See for a complete listing of the 34970A error messages Interface Configuration Commands RS-232 Interface Configuration RS-232 Interface ConfigurationRS-232 Configuration Overview RS-232 Flow Control Modes RS-232 Data Frame Format Connection to a Computer or TerminalRS-232 Troubleshooting Modem Communications Modem CommunicationsFor more information, see Flow Control Selection on S0=1What is a Condition Register? What is an Event Register?What is an Enable Register? Scpi Status SystemAgilent 34970A Status System Status Byte Register Bit Definitions Status Byte RegisterDecimal Bit Number DefinitionUsing Service Request SRQ and Serial Poll Using *STB? to Read the Status ByteTo Determine When a Command Sequence is Completed Using the Message Available Bit MAVTo Interrupt Your Bus Controller Using SRQ Questionable Data Register Bit Definitions Questionable Data RegisterScpi Status System Standard Event Register Bit Definitions Standard Event RegisterScpi Status System Alarm Register Bit Definitions Alarm RegisterStandard Operation Register Bit Definitions Standard Operation RegisterSee the table on page 277 for the register bit definitions Status System CommandsStatus Byte Register Commands Questionable Data Register Commands See the table on page 280 for the register bit definitionsStatus System Commands Standard Event Register Commands See the table on page 282 for the register bit definitionsStatus System Commands Alarm Register Commands STATusALARmCONDition?STATusALARmEVENt? STATusALARmENABle enablevalue STATusALARmENABle?Status System Commands Standard Operation Register Commands STATusOPERationENABle enablevalue STATusOPERationENABle?See the table on page 285 for the register bit definitions STATusOPERationCONDition?Miscellaneous Status Register Commands STATusPRESetDATAPOINtsEVENtTHReshold numrdgs DATAPOINtsEVENtTHReshold? PSCCalibration Commands CALibration?CALibrationCOUNt? CALibrationSECureCODE newcodeCALibrationSECureSTATe OFFON,code CALibrationSECureSTATe? CALibrationSTRing quotedstringCALibrationSTRing? CALibrationVALue value CALibrationVALue?Service-Related Commands DIAGnosticDMMCYCLes?DIAGnosticDMMCYCLesCLEar DIAGnosticRELayCYCLes? @chlistWAI An Introduction to the Scpi Language An Introduction to the Scpi LanguageCommand Format Used in This Manual Command Separators Using the MIN and MAX ParametersIEEE-488.2 Common Commands Querying Parameter SettingsScpi Command Terminators Scpi Parameter Types 301 Using Device Clear Using Device ClearError Messages Error Messages Execution Errors Execution Errors 114 121123 124Execution Errors 168 178211 213Execution Errors 230 310350 410Instrument Errors 226 Instrument Errors 221225 Instrument Errors 261 271272 281306 Instrument Errors 303305 Instrument Errors 501 502511 512Self-Test Errors 601602 603Calibration Errors Calibration Errors 710 720721 722Plug-In Module Errors 901902 903318 Application Programs Application Programs Example Programs for Excel Example Programs for ExcelExcel 7.0 Example takeReadings Macro VISAaddr =323 324 Excel 7.0 Example ScanChannels Macro Dim columnIndex As Integer326 327 Example Programs for C and C++ Example Programs for C and C++++ Example dacout.c ++ Example statreg.c 331 332 Tutorial Matrix Switching, starting on TutorialSystem Cabling and Connections Cable SpecificationsSystem Cabling and Connections Ft 2 conductors Cable Type Nominal Impedance Capacitance AttenuationGrounding Techniques Separation of High-Level and Low-Level Signals Shielding TechniquesSources of System Cabling Errors Copper-to Approx. ∝V / C Where Discussion of integration timeVoltage Measured = √ V + Noise Measurement Fundamentals Measurement FundamentalsIntegration Time PLCs NMRTemperature Measurements RTDMeasurement Fundamentals Internal DMM Internal DMM Ice Bath 349 Measurement Fundamentals Temperature Probe Type Pos + Lead Neg Lead Iron ConstantanNickel-Chromium Nickel-Aluminum Copper ConstantanSources of Error in Thermocouple Measurements Without Shield DC Voltage Measurements Sources of Error in DC Voltage Measurements Or greater see page 103 for a discussion of integration timeConnection a Connection B Rs + Ri 358 AC Voltage Measurements 360 361 Sources of Error in AC Voltage Measurements 363 For low frequencies + Noise Measurement Fundamentals Current Measurements Current measurements are allowed only on the 34901A moduleSources of Error in DC Current Measurements Sources of Error in AC Current MeasurementsResistance Measurements 370 Measurement Fundamentals Sources of Error in Resistance Measurements Insulating Material Resistance Range Moisture AbsorbingStrain Gage Measurements HI Source HI Sense LO Sense LO Source Strain DMM SensitivityFrequency and Period Measurements Sources of Error in Frequency and Period Measurements Low-Level Signal Multiplexing and Switching Low-Level Signal Multiplexing and SwitchingOne-Wire Single-Ended Multiplexers Two-Wire MultiplexersFour-Wire Multiplexers Signal Routing and Multiplexing Sources of Error in Multiplexing and Switching Module Bank Actuators and General-Purpose Switching Actuators and General-Purpose SwitchingSnubber Circuits RC Protection NetworksUsing Varistors Using Attenuators Matrix Switching Matrix SwitchingCombining Matrices Matrix ModuleRF Signal Multiplexing RF Signal MultiplexingSources of Error in RF Switching Insertion Loss 75ΩMultifunction Module Multifunction ModuleDigital Input Digital Output Using an External Pull-Up Driving External SwitchesTotalizer Totalizer Errors Voltage DAC Output DAC Errors Relay Life and Preventative Maintenance Relay Life and Preventative MaintenanceRelay Life Relay LoadSwitching Frequency Replacement Strategy402 Specifications DC, Resistance, and Temperature Accuracy Specifications DC, Resistance, and Temperature Accuracy SpecificationsDC Measurement and Operating Characteristics DC Measurement and Operating CharacteristicsAC Accuracy Specifications AC Accuracy SpecificationsAC Measurement and Operating Characteristics AC Measurement and Operating CharacteristicsMeasurement Rates and System Characteristics Measurement Rates and System CharacteristicsModule Specifications Module Specifications34905A, 34906A Typical AC Performance Graphs Typical AC Performance GraphsInsertion Loss 75 Ω Crosstalk 75 ΩSoftware Specifications 34907AProduct and Module Dimensions Product and Module DimensionsTo Calculate Total Measurement Error To Calculate Total Measurement Error415 Interpreting Internal DMM Specifications Interpreting Internal DMM SpecificationsNumber of Digits and Overrange SensitivityCriteria ResolutionAccuracy Day and 1-Year Accuracy Temperature CoefficientsHour Accuracy Configuring for Highest Accuracy Measurements Configuring for Highest Accuracy Measurements420 Totalize Threshold jumper, 135, 175 totalizer reset mode IndexIndex 423 424 425 426 427 428 429 430 431 432 433 434 U T I O N Declaration of Conformity
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34970A specifications

Agilent Technologies 34970A is a versatile data acquisition and measurement system that has gained popularity in various industries, including research and development, manufacturing, and education. The primary purpose of the 34970A is to offer an efficient solution for data collection, monitoring, and analysis, which can significantly enhance productivity and accuracy in testing applications.

One of the main features of the 34970A is its modular design, allowing users to customize the system according to their specific measurement needs. The mainframe can accommodate up to three plug-in measurement modules, which can include various types of measurements such as analog, digital, temperature, and frequency. This modularity provides flexibility for users to tailor the system to their requirements, making it highly adaptable to different applications.

Another notable characteristic of the Agilent 34970A is its impressive channel configuration. The system can support up to 120 measurement channels when fully configured, enabling extensive data acquisition without the need for multiple devices. This capability is essential for applications requiring simultaneous monitoring of multiple parameters or locations.

The 34970A utilizes advanced signal processing technologies to ensure high-accuracy measurements. The internal 6.5-digit resolution multimeter provides precise readings, while the device also supports various input types, such as thermocouples and RTDs for temperature measurements. The ability to perform mathematical functions, such as summation and averaging, on the acquired data further enhances its usability.

For data storage and management, the Agilent 34970A features built-in memory for storing up to 20,000 readings. Users can also easily transfer data to a PC through the RS-232 interface or GPIB (IEEE 488) for further analysis and reporting. Additionally, it offers the capability to program automatic data logging and scheduling of measurements, which streamlines the testing process and reduces manual intervention.

In terms of user interface, the 34970A is equipped with a large graphical display that provides clear visualization of measurement data and easy navigation through settings and options. The menu-driven interface makes it accessible for users of all skill levels, simplifying the setup and operation of the device.

Overall, the Agilent Technologies 34970A stands out for its modularity, high channel capacity, advanced measurement technologies, and user-friendly interface. As a reliable and efficient data acquisition system, it is well-suited for a wide range of applications, making it an essential tool for engineers and technicians looking to enhance measurement precision and efficiency.
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