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Fluke user manual 2620A, 2625A, Users Manual

Models: 2625A 2620A

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Users Manual

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Fluke user manual 2620A, 2625A, Users Manual

Contents

Users Manual 2620A/2625AHydra Series II Data Acquisition Unit Hydra Series II Data Logger LIMITED WARRANTY & LIMITATION OF LIABILITY 5/94Introduction Table of ContentsTitle Overview2620A/2625A Using the Computer InterfaceOperating the Instrument from the Front Panel Using Shielded Wiring Using the IEEE-488 InterfaceComputer Interface Command Set Additional ConsiderationsAppendices Maintenance2620A/2625A IndexList of Tables TitlePerformance Tests Voltage, Resistance, and Frequency Performance Tests for RTD Temperature Function DIN/IEC 751 Amendment2620A/2625A Amendment 1 IPTS-684-Terminal Connections to Decade Resistance Box List of FiguresTitle Hydra DB-9 to PC DB-9 RS-232 Connection GenericBescheinigung des Herstellers/Importeurs Interference InformationDeclaration of the Manufacturer or Importer viiiTo avoid electric shock Safety Terms in this ManualSymbols Marked on Equipment ∙ Remove inputs from live voltages before opening the input moduleUse the Proper Power Cord AC Power SourceDC Power Source 2620A/2625AIntroduction Getting StartedSetting Up a Channel The Basics2620A/2625A Selecting the Scan Data DestinationTaking Measurements Getting Started continuedPress Mto activate the Monitor function 2620A/2625AViewing Minimum, Maximum, and Last Data Values LAST MIN MAX LAST MIN MAX oo24f.eps2620A/2625A Users ManualTitle IntroductionChapter Page2620A, 2625A Users ManualThe Hydra Series II Data Logger Options and AccessoriesThe Hydra Series II Data Acquisition Unit IEEE-488 Interface AssemblyTable 1-1. Hydra Features 2620A, 2625AWhere to go From Here Where to go From HereAccessories IntroductionGetting Started Chapter 4 Using the Computer InterfaceChapter 6 Maintenance Chapter 1 IntroductionChapter OverviewTitle 2620A, 2625A Users ManualAdjusting the Handle Setting Up the InstrumentIntroduction Unpacking and Inspecting the InstrumentLine Power Front/Rear Panel FeaturesOverview Setting Up the InstrumentFigure 2-2. Front Panel Figure 2-4. Right Display Figure 2-3. Left DisplayFigure 2-5. Annunciators Overview Setting Up the InstrumentTable 2-1. Display Annunciators Table 2-1. Display Annunciators cont 2620A, 2625AFigure 2-6. Rear View Turning the Instrument On Operating ModesInput Channels Left Display Front Panel DisplayReading the Display Right DisplayUsing the Buttons Front Panel ButtonsSelecting a Channel Setting up a Channel N O L KSetting up a Channel Setting Alarm Limits and Mx+B Scaling Values Alarm LimitsSetting the Scan Interval Mx+B ScalingUsing the Scan Function Using the Monitor FunctionReviewing Channel Data Using External DC Power Viewing the Totalizer CountUsing the Rack Mount Kit 2620A, 2625AChanging the Temperature Unit Operating the Instrument from the Front PanelUsing the Digital I/O Lines Setting Date and Time of DayFront Panel Monitor Only Function 2620A, 2625AFront Panel Review Only Function Computer Interface-Initiated LockoutsIntroduction Configuration ModeFigure 3-1. Configuration Mode Operating ModesOther Displayed Data What is the Present Configuration?Channel Configuration If Power is InterruptedChannels 4-20 assigned to digital I/O lines 4-7, as follows Table 3-1. Configuration Reset Settingscleared for all channels Page Channel Configuration Operating the Instrument from the Front Panel2620A, 2625A Channel Configuration Setting AlarmsAlarm Limits Operating the Instrument from the Front PanelAlarm Indications GAGEResetting Alarm Conditions Using the Digital I/O LinesMx+B Scaling Table 3-8. Initial Alarm Assignments, Digital I/O Lines 4 ThroughB to define the scaling values Page Instrument Configuration Entering and Changing Numeric ValuesSelecting Scan Interval Selecting the Measurement RateExternal Triggering Changing the Temperature UnitTriggering Table 3-11. Measurement Rate SelectionTo avoid electric shock Measurement ConnectionsSetting Date and Time of Day ∙ Remove inputs from live voltages before opening the input moduleDC Volts, AC Volts, Frequency, and Thermocouples STRAIN RELIEF Operating the Instrument from the Front PanelMeasurement Connections Figure 3-2. Input Module ConnectionsResistance and RTD Measurement Connections Operating the Instrument from the Front PanelUSE H AND L TERMINALS FOR ANY CHANNEL CHANNEL 0 ON FRONT PANEL General TotalizingReview Array ConnectionsList Button Functions Table 3-16. List Button Operation Note1Autoprint Memory StorageFront Panel Review Only Function Front Panel Lock out ConditionsFront Panel Monitor Only Function Calibration REM AnnunciatorComputer Interface-Initiated Lockouts 2620A, 2625A Users ManualChapter Using the Computer InterfaceInstalling the IEEE-488 Interface TitleStatus Byte Register Service Request Enable RegisterComputer Interface Command Set 4-19L. If IEEE appears on the display, the IEEE-488 interface is enabled Using the RS-232 Computer InterfaceTo determine which computer interface is enabled, select COMM K Otherwise, if a baud rate appears, the RS-232 interface is enabledSetting Communication Parameters RS-232 Autoprint Computer Interface Control Autoprint and Memory Storage RS-232Autoprint Output Format 07420102/09/91 Memory Storage Computer Interface ControlMemory Retrieval 5 -3.2345 mMX+B H/R12123.87 kOHMS/L1731.268VAC ALM15DIO204TOTAL0Clearing Memory Memory Full OperationCabling the Instrument to a Host or Printer RS-232 RS-232 Information Installation TestDevice Clear Using Ctrl C Character EchoingInstalling the IEEE-488 Interface Using the IEEE-488 InterfaceSample Program Using the RS-232 Computer Interface RS-232 Prompts2620A, 2625A Figure 4-2. Sample ProgramUsing the IEEE-488 Interface Using the Computer InterfaceFigure 4-2. Sample Program cont Capability Table 4-3. IEEE-488 Setup BaudAddressEnabling the IEEE-488 Interface Table 4-2. IEEE-488.1 Capabilities DescriptionInstallation Test General Information RS-232 and IEEE-488How the Instrument Processes Input Input Terminators Input StringsThe instrument stores received input in a 350-byte input buffer Typical Input StringsFUNC 1, OHMS, 3 Using the Computer InterfaceGeneral Information RS-232 and IEEE-488 FUNC 12, TEMP, KSending Input Strings to the Instrument Sending Numeric Values to the Instrument RS-232 and IEEE-488How the Instrument Processes Output Service Requests IEEE-488 only and Status Registers Output Queue 7 6 ESB2620A, 2625A Name Event Status and Event Status Enable RegistersStatus Byte Register Table 4-4. Status Byte Register DescriptionReading the Status Byte Register Service Request Enable Register Instrument Event RegisterComputer Interface Command Set Computer Interface Command Set Using the Computer InterfaceTable 4-7. Command and Query Summary Table 4-7. Command and Query Summary cont 2620A, 2625AComputer Interface Command Set Using the Computer InterfaceTable 4-7. Command and Query Summary cont Table 4-8. Command and Query Reference 2620A, 2625AComputer Interface Command Set Using the Computer InterfaceTable 4-8. Command and Query Reference cont 2620A, 2625A limitnum = Using the Computer InterfaceComputer Interface Command Set DOstate2620A, 2625A Return alarm limit data for specified channel and limitSet instrument calendar values Using the Computer Interface Computer Interface Command SetTable 4-8. Command and Query Reference cont 2620A, 2625AComputer Interface Command Set Using the Computer InterfaceIf the channel indicated is invalid, an Execution Error is generated. For valid channels, two or three comma-separated data fields are returned. One of the following function definitions is returned in the first data field Table 4-8. Command and Query Reference cont 2620A, 2625AComputer Interface Command Set Using the Computer InterfaceLOCK LOCK? LOCS LOG? 2620A, 2625A LOGGED? LOGBIN? LOGCLR LOGCOUNT?Computer Interface Command Set Using the Computer InterfaceTable 4-8. Command and Query Reference cont Enables monitoring of given channel if monitoring Table 4-8. Command and Query Reference cont2620A, 2625A Computer Interface Command Set Using the Computer InterfaceNext Scan’s Values 2620A, 2625A Using the Computer Interface Computer Interface Command SetTable 4-8. Command and Query Reference cont 2620A, 2625AUsing the Computer Interface Computer Interface Command SetTable 4-8. Command and Query Reference cont 2620A, 2625AComputer Interface Command Set Using the Computer InterfaceTOTAL TOTAL? TOTALDBNC TOTALDBNC? TRIGGER TRIGGER? alarm2620A, 2625A Trigger Type QueryMonitor Alarm Enabled Type Additional ConsiderationsExternal Trigger Enabled Type When Measuring Resistance or Temperature RTD2620A, 2625A Users ManualIntroduction Measurement RateAdvanced Trigger Mechanisms These two additional trigger mechanisms are mutually exclusiveExternal Trigger Enabled Type Both External and Monitor Alarms Disabled TypeREMS, a *TRG can be generated from the front panel by pressing Q Additional Considerations Advanced Trigger MechanismsThermal Voltages When Measuring Resistance or Temperature RTDMonitor Alarm Enabled Type Additional Considerations When Measuring Resistance or Temperature Rtdoo16f.eps Effects of Internal Noise in AC Measurements True RMS MeasurementsWaveform Comparison True RMS vs Average Responding Making Mixed Measurements Making Mixed MeasurementsFigure 5-3. Comparison of Common Waveforms 2620A, 2625ATO DISPLAY RMS FOR SINE WAVES Isolated and Shielded Sensor Configuration Using Shielded WiringNon-Isolated Sensor Configuration WWarningIn More Detail Dedicated Alarm Output Test MaintenanceThermocouple Temperature Accuracy Test Chapter2620A, 2625A Users ManualLine Fuse CleaningSelf-Test Diagnostics and Error Codes When the instrument is powered up, the entire display lightsPerformance Tests Table 6-1. Power-Up Error Codes Description MaintenanceError Performance TestsInstrument Type Table 6-2. Recommended Test Equipment Minimum Specification2620A, 2625A Recommended ModelAccuracy Verification Test Channel Integrity Test2620A, 2625A 20 mVThermocouple Measurement Range Accuracy Test Table 6-3. Performance Tests Voltage, Resistance, and Frequency cont4-Terminal Resistance Test Thermocouple Temperature Accuracy Test EX GRD 2620A, 2625AEX SNS OUTPUTHYDRA INPUT MODULE Open Thermocouple Response TestDECADE RESISTANCE BOX J K N E TRTD Temperature Accuracy Test RTD Temperature Accuracy Test Using Decade Resistance SourceRTD Temperature Accuracy Test Using DIN/IEC Digital Input/Output Verification TestsDOLEVEL 0,0 CR Assure output 0 measures a LOW state. DOLEVEL 1,0 CR Digital Output TestDigital Input Test Table 6-7. Digital Input Values STATE OF DIGITAL INPUTS Totalizer TestTERMINAL GROUNDED DECIMAL VALUETotalizer Sensitivity Test Dedicated Alarm Output Test 2620A, 2625A V ΩAExternal Trigger Input Test CalibrationCalibration Service Variations in the DisplayAppendix AppendicesTitle Page Accuracies at Ambient Temperatures Other Than Specified SpecificationsAppendix A IntroductionCommon Mode Rejection DC Voltage InputsNormal Mode Rejection 2620A/2625AThermocouple Inputs Appendices2620A/2625A Appendices RTD InputsCommon Mode and Normal Mode Rejection Input ImpedanceMaximum Sensor Temperature AC Voltage Inputs2-Wire Accuracy 2620A/2625AAppendices DC Component Error Crest Factor ErrorCommon Mode Rejection 2620A/2625AAppendices Ohms Inputs2-Wire Accuracy Input ProtectionFrequency Range Frequency Inputs2620A/2625A SensitivityAppendices Typical Scanning RateA-11 Digital Inputs Maximum Autoranging TimeTotalizing Input 2620A/2625AIsolation Trigger InputAppendices ThresholdEnvironmental Digital and Alarm OutputsReal-Time Clock and Calendar Battery LifeWeight GeneralCommon Mode Voltage AppendicesPower 2625A Data Storage2620A Options 2620A/2625AASCII & IEEE-488 Bus Codes Appendix BASCII & BUS CODES Implementation of IEEE Standard IEEE-488.2 Devise Documentation RequirementsAppendix C The initial power-up device setting is Channels 0 - 20OFFDigital I/O lines high non-alarm Totalizer 0, with debounce disabled Alarm parameters Limit-1 and Limit-2 OFF. All limit valuesAlarm assignments Channels 0-3 assigned to outputs 0-3,respectively Open Thermocouple Detection OTC enabledAppendices COMMAND MESSAGE UNIT QUERY MESSAGE UNIT COMMAND PROGRAM HEADERThe following queries return data in two formats ALARMLIMIT? PROGRAM MESSAGE UNIT PROGRAM MESSAGE UNIT SEPARATOR2620A/2625A The *CAL? command not implemented an optional commandThe *RDT and *RDT? commands are not implemented There are no device-to-device messagesOperation complete is generated when the command is parsed Appendices2620A/2625A Appendix D Signal Cross Talk in a DC Voltage ChannelMaking Mixed Measurements IntroductionAC Signal Cross Talk Into a Frequency Channel AC Signal Cross Talk Into an AC Voltage ChannelAC Signal Cross Talk Into an Ohms Channel Ratio worst case5.0 × AC Signal Crosstalk Into a Temperature ChannelTEMPERATURE Error Ratio = ⎢ 2.0 ×2620A/2625A Decoding the ASCII String Binary Upload of Logged Data LOGBIN? 2625A onlyAppendix E Introduction2620A/2625A Figure E-1. ASCII String DecodingFloating Point Conversion AppendicesExample 2620A/2625AAppendices Figure E-2. Floating Point Conversion2620A/2625A Figure E-3. ExampleConnections RS-232 CablingAppendix F CablesPRINTER 2620A/2625ARS43 PRINTERRS43 CABLE NULL MODEM RTS - REQUEST TO SEND CTS - CLEAR TO SEND RI - RING INDICATORAppendices DCD Rx Tx DTR GND DSR RTS CTS RIRS40 CABLE OR EQUAL 2620A/2625ARx Tx DTR GND DSR RTS CTS Tx Rx RTS CTS DSR GND DCDAppendices Figure F-4. Hydra DB-9 to Modem DB-25 RS-232 ConnectionRS42 CABLE OR EQUAL 2620A/2625ARx Tx DTR GND DSR RTS CTS Tx Rx RTS CTS DSR GND DCDFigure F-6. RS-232 DB9 and DB-25 Connectors Appendices2620A/2625A Hydra Configuration Record Index