BenutzerhandbuchInhaltsverzeichnis2635A Users Manual1LIMITED WARRANTY & LIMITATION OF LIABILITY2Table of Contents3List of Tables9List of Figures11Safety13Interference Information13Declaration of the Manufacturer or Importer13Bescheinigung des Herstellers/Importeurs13Safety Terms in this Manual14Symbols Marked on Equipment14AC Power Source15DC Power Source15Use the Proper Fuse15Grounding the Instrument15Use the Proper Power Cord15Do Not Operate in Explosive Atmospheres15Do Not Remove Cover15Do Not Attempt to Operate if Protection may be Impaired15Ten Minute Tour161. Preparation for Use27Introduction31Operating Modes31Front Panel Operation33Memory Card Operation33Computer Operation34Printer Operation34Modem Operation34Measurement Capabilities35Mx+B Scaling35Alarms35Totalizer Channel35Alarm Outputs and Digital I/O35Applications Software35Hydra Starter Package36Hydra Logger36Options and Accessories36Memory Card Reader36Connector Set, 2620A-10036Setting Up the Instrument37Unpacking and Inspecting the Instrument37Adjusting the Handle38Connecting the Instrument to a Power Source38AC Operation39DC Operation39Input Channels39Measurement Connections40Using Shielded Wiring40Crosstalk40Universal Input Module Connections40Alarm Outputs Connections43DC Power43Alarm Outputs43External Trigger Input43Digital I/O Connections44Digital I/O44Totalizer Input44Controls and Indicators45Front Panel Controls45Front Panel Indicators452. Front Panel Operations51Summary of Front Panel Operations55Configuring the Instrument for Operation56Turning the Power on56Selecting a Channel58Configuring a Measurement Channel58Configuring a Channel to Measure DC Volts59Configuring a Channel to Measure AC Volts60Configuring a Channel to Measure Resistance61Configuring a Channel to Measure Frequency62Configuring a Channel to Measure Temperature63Thermocouples63Resistance-Temperature Detectors63Thermocouple Restrictions:63Resistance Temperature Detectors Restrictions:63Configuring a Channel Off66Setting Operating Conditions66Setting the Scan Interval67Setting the Measurement Rate68Setting the Alarms68Alarm Indications While Scanning68Alarm Indications While Monitoring69Alarm Indications While Reviewing69Clearing Alarm Parameters from a Channel69Alarm Outputs for Channel 0 to 3 Using the Alarm Outputs Connector69Alarm Outputs for Channels 4 to 20 Using the Digital I/O Connector69Alarms and Autoprinting70Alarms and Monitor-Alarm Triggering70Alarms and Mx+B Scaling70Setting the Mx+B Scaling73Examples73Restrictions73Clearing Mx+B Scaling from a Channel73Operating Modes76Using the Scan Mode76Memory Card as a Data Destination76Memory Card Formatting76Memory Card Capacity76Memory Card Files76Memory Card Exchange During Scanning76Memory Card Data Extraction77Memory Card Error Messages78Using the Monitor Mode79Using the Review Mode80Additional Features81Scan Triggering Options81External Trigger81Monitor-Alarm Trigger81Triggering Options and Memory Card Operation81Totalizer Operation82Digital Input/output Lines83Setting Date and Time84Reading Instrument Software Versions85Returning to the Local Mode85Front Panel Key Lockout Options86Instrument Interfaces86Memory Card Interface86RS-232 Computer Interface87Using the RS-232 Computer Interface With a Printer87Using the RS-232 Computer Interface With a Modem873. Memory Card Operations89Summary of Memory Card Operations91Memory Card Files91Setup Files92Data Files92Memory Card Capacity92Memory Card Battery93Inserting and Removing the Memory Card93Inserting a Memory Card93Removing a Memory Card93Changing the Memory Card During Scanning93Setting the Memory Card Write-protect Feature93Installing or Replacing the Memory Card Battery93Initializing a Memory Card95Recording Measurement Results During Scanning96Setup File Procedures97Using Setup Store97Using Setup Load98Using Setup Erase99Data File Procedures100Using Data Open100Using Data Erase101Setup and Data Files Directory102Setup and Data File Current Status103Memory Card File Operations to and from a PC1044. Computer Operations105Summary of Computer Operations107Connecting the Instrument to a PC107Configuring the Instrument for Computer Operations109Configuring the PC for Computer Operations110Testing the Instrument/PC RS-232 Interface110Testing the RS-232 Interface Using Terminal Emulation (Windows)110Testing the RS-232 Interface Using Terminal Emulation (Generic)111Testing the RS-232 Interface Using Gwbasic113Testing the RS-232 Interface Using Qbasic114Computer Interface Commands and Operation116How the Instrument Processes Input116Input Terminators116Input String Examples117Sending Numeric Values to the Instrument117How the Instrument Processes Output117Status Registers118Instrument Event Register (IER)118Standard Event Status Register (ESR)120Status Byte Register (STB)121Computer Interface Command Set122Xmodem File Transfers1225. Printer Operations171Summary of Printer Operations173Connecting the Instrument to a Printer173Configuring for Printer Operations175Printing Measurement Data and Memory Card Directory176Problems?176Printing Measurement Results During Scanning176Printing the Review Array178Printing the Directory of the Memory Card1796. Modem Operations181Summary of Modem Operations183Connecting the Modem to a PC for Modem Configuration184Configuring the Instrument Modem for Modem Operations184Connecting the Modem to an Instrument186Configuring the Instrument for Modem Operations187Testing the RS-232/Modem Interface1887. Maintenance189Introduction191Cleaning191Line Fuse191Selftest Diagnostics and Error Codes192Performance Tests192Accuracy Verification Test195Channel Integrity Test196Thermocouple Measurement Range Accuracy Test197Four-Terminal Resistance Test198Thermocouple Temperature Accuracy Test198Open Thermocouple Response Test199RTD Temperature Accuracy Test201RTD Temperature Accuracy Test (Using Decade Resistance Source)201RTD Temperature Accuracy Test (Using DIN/IEC 751 RTD)202Digital Input/Output Verification Tests203Digital Output Test203Digital Input Test204Totalizer Test205Totalizer Sensitivity Test206Dedicated Alarm Output Test206External Trigger Input Test209Calibration209Variations in the Display210Service210Appendices211A. Specifications213Introduction213Accuracies at Ambient Temperatures Other than Specified213Response Times213DC Voltage Measurements213Resolution213Accuracy214Input Impedance214Normal Mode Rejection214Common Mode Rejection214Maximum Input215Cross-Talk Rejection215AC Voltage Inputs (True rms AC Voltage, AC-Coupled Inputs)216Resolution216Accuracy216Temperature Measurements (Thermocouples)217Accuracy217Input Impedance219Common Mode and Normal Mode Rejection219Cross-Talk Rejection219Open Thermocouple Detect219Temperature Measurements (RTDs)219Accuracy219RTD Type2202-wire Accuracy220Maximum Current Through Sensor220Typical Full Scale Voltage220Maximum Open Circuit Voltage220Maximum Sensor Temperature220Cross-Talk Rejection220AC Voltage Measurements220Resolution221Accuracy221Maximum Voltage Input VS. Frequency Input222Resistance Measurements223Resolution223Accuracy2232-Wire Accuracy224Cross-Talk Rejection224Frequency Measurements224Resolution and Accuracy224Frequency Range224Input Sensitivity224Maximum AC Input225Cross-Talk Rejection225Typical Scanning Rate225Maximum Autoranging Time226Totalizing Input226Input Voltage226Isolation226Threshold226Hysteresis226Input Debouncing226Rate226Maximum Count226Digital Inputs226Input Voltage227Isolation227Threshold227Hysteresis227Trigger Inputs227Input Voltages227Isolation227Minimum Pulse Width227Maximum Frequency227Specified Conditions227Maximum Latency227Repeatability227Digital and Alarm Outputs228Output Logic Levels228Isolation228Real-Time Clock and Calendar228Accuracy228Battery Life228Environmental Specifications228Warmup Time228Operating Temperature228Storage Temperature228Relative Humidity (Non-Condensing)229Altitude229Vibration229Shock229General229Channel Capacity229Measurement Speed229Nonvolatile Memory Life229Common Mode Voltage229Voltage Ratings230Size230Weight230Power230Standards230RS-232-C230B. Crosstalk Considerations231Introduction1AC Signal Cross Talk in a DC Voltage Channel1AC Signal Cross Talk into an AC Voltage Channel1AC Signal Cross Talk into an Ohms Channel1AC Signal Cross Talk into a Frequency Channel1AC Signal Crosstalk into a Temperature Channel1C. Binary Upload of Logged Data235Introduction1Decoding the ASCII String1Floating Point Conversion1Example1D. RS-232 Cabling243Introduction1Connections1Cables1E. 8-Bit Binary-Coded-Decimal Table251F. Memory Card File Formats253Introduction1Example1G. True RMS Measurements261Introduction1Effect of Internal Noise in AC Measurements1Waveform Comparison (True RMS VS Average Responding)1Hydra Configuration Record263Hydra Memory Card Record264Index265Größe: 1,4 MBSeiten: 268Language: EnglishHandbuch öffnen