Fluke 2625A User Manual

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Page 1 - 2620A/2625A

®2620A/2625AHydra Series II Data Acquisition UnitHydra Series II Data LoggerUsers ManualPN 686675November 1997© 1997 Fluke Corporation, All rights res

Page 2

viiiCautionTHIS IS AN IEC SAFETY CLASS 1 PRODUCT. BEFORE USING, THE GROUND WIRE IN THELINE CORD OR THE REAR PANEL BINDING POST MUST BE CONNECTED FOR S

Page 3 - Table of Contents

2620A, 2625AUsers Manual4-30Table 4-8. Command and Query Reference (cont)ALARM_LIMIT Set Alarm LimitStore alarm limit information for the indicated ch

Page 4

Using the Computer InterfaceComputer Interface Command Set44-31Table 4-8. Command and Query Reference (cont)DIO_LEVELS? Digital I/O State QueryReturns

Page 5 - Contents

2620A, 2625AUsers Manual4-32Table 4-8. Command and Query Reference (cont)MEASUREMENT UNITS STRINGScaled “MX+B”Volts DC “VDC”Volts AC “VAC”Resistance “

Page 6

Using the Computer InterfaceComputer Interface Command Set44-33Table 4-8. Command and Query Reference (cont)For temperature functions, the "range

Page 7 - List of Tables

2620A, 2625AUsers Manual4-34Table 4-8. Command and Query Reference (cont)IEE? Instrument Event Enable QueryReturns the present value of the Instrument

Page 8

Using the Computer InterfaceComputer Interface Command Set44-35Table 4-8. Command and Query Reference (cont)LOCK Lock the instrument front panel so th

Page 9 - List of Figures

2620A, 2625AUsers Manual4-36Table 4-8. Command and Query Reference (cont)The Totalizer count is returned as a scientific notation value in the range0

Page 10 - Interference Information

Using the Computer InterfaceComputer Interface Command Set44-37Table 4-8. Command and Query Reference (cont)LOG_MODE Determines treatment of new scan

Page 11 - To avoid electric shock:

2620A, 2625AUsers Manual4-38Table 4-8. Command and Query Reference (cont)MIN? Channel’s Minimum ValueReturns minimum value(s) for channels measured in

Page 12 - Users Manual

Using the Computer InterfaceComputer Interface Command Set44-39Table 4-8. Command and Query Reference (cont)NEXT? Next Scan’s ValuesThe NEXT? query re

Page 13 - Getting Started

ixSafety Terms in this ManualThis instrument has been designed and tested in accordance with IEC publication 1010,Safety Requirements for Electrical M

Page 14

2620A, 2625AUsers Manual4-40Table 4-8. Command and Query Reference (cont)PRINT_TYPE? Data Logging Type Query (RS-232 only)Return the Autoprint or inte

Page 15

Using the Computer InterfaceComputer Interface Command Set44-41Table 4-8. Command and Query Reference (cont)REMS Remote without Lockout (RS-232 only)E

Page 16

2620A, 2625AUsers Manual4-42Table 4-8. Command and Query Reference (cont)RWLS Remote with Lockout (RS-232 only)Enter the IEEE-488.1 remote with front

Page 17

Using the Computer InterfaceComputer Interface Command Set44-43Table 4-8. Command and Query Reference (cont)SCALE_MB? Mx+B Scaling Values QueryReturn

Page 18

2620A, 2625AUsers Manual4-44Table 4-8. Command and Query Reference (cont)Use the lowest two bits of the value given as individual flags to specifythe

Page 19 - Chapter 1

Using the Computer InterfaceComputer Interface Command Set44-45Table 4-8. Command and Query Reference (cont)TOTAL Set Totalizer CountGive the Totalize

Page 20

2620A, 2625AUsers Manual4-46Table 4-8. Command and Query Reference (cont)TRIGGER? Trigger Type QueryReturns an integer representing the present trigge

Page 21 - Options and Accessories

5-1Chapter 5Additional ConsiderationsTitle PageIntroduction ...

Page 22

2620A, 2625AUsers Manual5-2

Page 23 - Where to go From Here

Additional ConsiderationsIntroduction55-3IntroductionChapter 5 discusses some topics that will help you use the instrument more effectively.These cons

Page 24

2620A/2625AUsers ManualxAC Power SourceThe instrument is intended to operate from an ac power source that will not apply morethan 264V ac rms between

Page 25 - Overview

2620A, 2625AUsers Manual5-4Verify the trigger type over the computer interface by sending the query:TRIGGER?Single scans can be triggered via the RS-2

Page 26

Additional ConsiderationsAdvanced Trigger Mechanisms55-5LOWHIGH7.0V2.0V0.8V–0.6V0VALID EXTERNALTRIGGERSSCANTIMESCANHIGH≥ 100 mSFALLING EDGEHELD 5 µSIG

Page 27 - Setting Up the Instrument

2620A, 2625AUsers Manual5-6Monitor Alarm Enabled (Type 2)This corresponds to the Front Panel ALAr or Computer Interface TRIGGER=2 setting.When the Mon

Page 28

Additional ConsiderationsWhen Measuring Resistance or Temperature (Rtd)55-71211 13 14 15 16 17 18 19 2021 345678910SOURCE(4-WIRE)SENSE(4-WIRE)H L H LH

Page 29

2620A, 2625AUsers Manual5-8Table 5-1. Ohms Test VoltageRange Typical Full Scale Voltage300.00 Ω 0.223.0000 kΩ 0.2530.000 kΩ 0.29300.00 kΩ 0.683.0000 M

Page 30

Additional ConsiderationsMaking Mixed Measurements55-9average-responding measurement devices display the correct rms reading of 1.0000V(the dc compone

Page 31

2620A, 2625AUsers Manual5-10DC AND ACTOTAL RMSTRUE RMS =0.0001.0001.0000.9000.6360.0000.7071.0001.0001.0002D0.0001.000AC-COUPLEDINPUTWAVEFORMPK-PKPEAK

Page 32

Additional ConsiderationsUsing Shielded Wiring55-11• Avoid connecting inputs with ac volts signals to any channel 10 numbers away froma sensitive cha

Page 33 - Turning the Instrument On

2620A, 2625AUsers Manual1. Connect the shield to L (low) at the 2620A-100 Input Module, and try connecting thesensor shield to a quiet earth ground a

Page 34 - Reading the Display

6-1Chapter 6MaintenanceTitle PageIntroduction ...

Page 35 - Front Panel Buttons

xiGetting StartedIntroductionThis section will have you operating Hydra in a matter of minutes. All basic operatinginformation is covered in this shor

Page 36 - Setting up a Channel

2620A, 2625AUsers Manual6-2

Page 37

MaintenanceIntroduction66-3IntroductionThis chapter describes basic maintenance that the instrument user can perform. Do notattempt any maintenance no

Page 38 - Alarm Limits

2620A, 2625AUsers Manual6-4Power-Line Cord ConnectorLine Fuse(T 125 mA, 250V, Slow Blow)Fuse Holder(Spare Fuse Provided)Complies with the limit for a

Page 39 - Setting the Scan Interval

MaintenancePerformance Tests66-5Table 6-1. Power-Up Error CodesError Description1 ROM checksum error2 External RAM test failed3 Internal RAM test fail

Page 40 - Reviewing Channel Data

2620A, 2625AUsers Manual6-6Table 6-2. Recommended Test EquipmentInstrument Type Minimum Specification RecommendedModelMultifunction Calibrator DC Volt

Page 41 - Using External DC Power

MaintenancePerformance Tests66-7Accuracy Verification Test1. Power up the instrument and allow it to temperature stabilize for 1/2 hour.2. Connect a

Page 42 - Using the Rack Mount Kit

2620A, 2625AUsers Manual6-8Table 6-3. Performance Tests (Voltage, Resistance, and Frequency)Function Range Input Level FrequencyDisplay Accuracy(1 yea

Page 43 - Chapter 3

MaintenancePerformance Tests66-9Table 6-3. Performance Tests (Voltage, Resistance, and Frequency) (cont)Using inputs in decades of 1.9:300 Ω short 0.0

Page 44

2620A, 2625AUsers Manual6-103. Connect a cable from the Output VA HI and LO connectors of the 5700A to the VΩand COM connectors on the front panel of

Page 45

MaintenancePerformance Tests66-11Note4-terminal connections are made using pairs of channels. 4-terminalmeasurements can only be made on channels 1 th

Page 46 - Channel Configuration

2620A/2625AUsers Manualxiithis example, "OFF" is lit if you’re working with channel 0, and have alreadyperformed the Configuration Reset).3.

Page 47

2620A, 2625AUsers Manual6-121211 13 14 15 16 17 18 19 2021 345678910SOURCE(4-WIRE)SENSE(4-WIRE)H L H LH LH LH LH LH LH LH LH LH L H LH LH LH LH LH LH

Page 48

MaintenancePerformance Tests66-131211 13 14 15 16 17 18 19 2021 345678910SOURCE(4-WIRE)SENSE(4-WIRE)H L H LH LH LH LH LH LH LH LH LH L H LH LH LH LH L

Page 49

2620A, 2625AUsers Manual6-14RTD Temperature Accuracy TestThe following two RTD Temperature Accuracy Tests are different in that one uses aDecade Resis

Page 50

MaintenancePerformance Tests66-15RTD Temperature Accuracy Test (Using DIN/IEC 751)1. Switch OFF power to the instrument and disconnect all other high

Page 51 - Setting Alarms

2620A, 2625AUsers Manual6-16Digital Output Test1. Ensure that communication parameters (i.e., transmission mode, baud rate, parity,and echo mode) on

Page 52 - Parameters (Below)

MaintenancePerformance Tests66-17 Verify that the returned value as shown on the Host screen = 255.NoteThe number returned is the decimal equivalent o

Page 53 - Using the Digital I/O Lines

2620A, 2625AUsers Manual6-185. Press the TOTAL button on the front panel of Hydra Series II. Assure Hydra Series II displays a 0 value.6. Jumper out

Page 54 - Mx+B Scaling

MaintenancePerformance Tests66-19Hydra Series II’s display should now show the totalizing value incrementing at a 10count per second rate.Dedicated Al

Page 55

2620A, 2625AUsers Manual6-201211 13 14 15 16 17 18 19 2021 345678910SOURCE(4-WIRE)SENSE(4-WIRE)H L H LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH LH L

Page 56 - Instrument Configuration

MaintenanceCalibration66-21External Trigger Input TestThe External Trigger Input Test verifies that the rear panel trigger input of Hydra SeriesII is

Page 57 - :00:00 0:00:00 0:00:0

Getting Started (continued)xiiiselect the mode (“Mode” in right display) from “All” to output all scan data, “ALAr” tooutput only alarm data, or “trAn

Page 58 - Changing the Temperature Unit

2620A, 2625AUsers Manual6-22no parts to disassemble, no mechanical adjustments to make, and the instrument can becalibrated by an automated instrument

Page 59 - Measurement Connections

AppendicesAppendix Title PageA Specifications...A

Page 61

A-1Appendix ASpecificationsIntroductionThe instrument specifications presented here are applicable within the conditions listedin the Environmental ch

Page 62 - Resistance and RTD

2620A/2625AUsers ManualA-2DC Voltage InputsRange ResolutionSlow Fast300 mV 10 µV 0.1 mV3 V 0.1 mV 1 mV30 V 1 mV 10 mV300 V 10 mV 0.1 VAccuracy ± (% ±

Page 63

AppendicesSpecificationsAA-3Thermocouple InputsTemperature Measurements - Accuracy (Thermocouples) (IPTS-68)Thermocouple Accuracy (±°C)*18°C to 28°C

Page 64 - Review Array

2620A/2625AUsers ManualA-4Temperature Measurements - Accuracy (Thermocouples) (ITS-90)Thermocouple Accuracy (±°C)*18°C to 28°C 0°C to 60°CType(°C)Temp

Page 65 - List Button Functions

AppendicesSpecificationsAA-5Input Impedance100 MΩ minimum in parallel with 150 pF maximumCommon Mode and Normal Mode RejectionSee Specifications, DC

Page 66

2620A/2625AUsers ManualA-6IEC 751, Amendment 2, 100 e Platinum (ITS-90)RTD 4 Wire Accuracy* (±°C)Temperature Resolution 18°C to 28°C 0°C to 60°C(°C) S

Page 67 - Memory Storage

AppendicesSpecificationsAA-71 Year Accuracy ±(% ± V)Range Frequency 18°C to 28°C0°C to 60°CSlow Fast Slow Fast20 Hz - 50 Hz 1.43% + 0.25 mV 1.43% +

Page 68

2620A/2625AUsers ManualxivNoteYou cannot activate the Monitor function if the selected channel is set upas OFF; the instrument gives a long beep and i

Page 69 - REM Annunciator

2620A/2625AUsers ManualA-8Frequency Maximum Input at Upper Frequency20 Hz - 50 Hz 300 V rms50 Hz - 100 Hz 300 V rms100 Hz - 10 kHz 200 V rms10 kHz - 2

Page 70

AppendicesSpecificationsAA-9Ohms InputsRange ResolutionTypical FullMaximumCurrentThroughMaximum OpenSlow FastScale Voltage Unknown Circuit Voltage30

Page 71 - Chapter 4

2620A/2625AUsers ManualA-10Frequency InputsFrequency Range15 Hz to greater than 1 MhzRange Resolution Accuracy + (% ± Hz)Slow Fast Slow Fast15 Hz - 90

Page 72

AppendicesSpecificationsAA-11Typical Scanning RateSee table below. The measurement conditions are: averaged rate over 20 scans;continuous scanning;

Page 73

2620A/2625AUsers ManualA-12Maximum Autoranging Time(Seconds per Channel)Function Range Change Slow FastVDC 300 mV ----------------------------> 150

Page 74 - Parity = “No”

AppendicesSpecificationsAA-13Isolationnonedc-coupledThreshold1.4VHysteresis500 mVTrigger InputInput Voltagescontact closure and TTL compatible“high”

Page 75 - Autoprint: Output Format

2620A/2625AUsers ManualA-14Digital and Alarm OutputsOutput Logic LevelsLogical “zero”: 0.8V max for an Iout of -1.0 mA (1LSTTL load)Logical “one”: 3.8

Page 76 - Memory Retrieval

AppendicesSpecificationsAA-15AltitudeOperating: 2,000 m maximumNon-operating: 12,200 m maximumVibration0.7 g at 15 Hz1.3 g at 25 Hz3 g at 55 HzShock

Page 77 - Clearing Memory

2620A/2625AUsers ManualA-16Power90V to 264V ac (no switching required), 50 and 60 Hz, 10 VA maximum9V dc to 16V dc, 10W maximumIf both sources are app

Page 78 - Device Clear Using Ctrl C

B-1Appendix BASCII & IEEE-488 Bus Codes

Page 79 - Using the IEEE-488 Interface

Getting Started (continued)xv20...0LAST MIN MAXLAST MIN MAXoo24f.epsPress N or C to remove the Review data fro

Page 80

2620A/2625AUsers ManualB-2B7B6B5B427262524B323222120B2B1B0BITSNUL SP!"12#$0@P pNULSOH GTLDLE MLA0 MLA16 @ MTA0 P MTA16 MSA0 MSA16PSPACECONTROLUPP

Page 81

C-1Appendix CIEEE-488.2 Devise DocumentationRequirementsIntroductionSection 4.9 of the IEEE Standard 488.2-1987 states: "All devices shall supply

Page 82

2620A/2625AUsers ManualC-2 Measurement rate: Slow. Scaling (M):1 (all channels) Offset (B): 0 (all channels) Alarm parameters: Limit-1 and Limit-2 OFF

Page 83

AppendicesIEEE-488.2 Devise Documentation RequirementsCC-3 <PROGRAM MESSAGE UNIT> <PROGRAM MESSAGE UNIT SEPARATOR> <COMMAND MESSAGE U

Page 84 - Typical Input Strings

2620A/2625AUsers ManualC-4 There are no device-to-device messages.11. The size of any block data responses, Section 8.7.9.4. There are no block data

Page 85 - LAST?SCAN 1;

AppendicesIEEE-488.2 Devise Documentation RequirementsCC-522. For each command, a statement describing whether is overlapped or sequential. All com

Page 86

2620A/2625AUsers ManualC-6

Page 87

D-1Appendix DMaking Mixed MeasurementsIntroductionThis appendix augments the discussion of ac signal effects on other channels (cross talk)found in Ch

Page 88 - Output Queue

2620A/2625AUsers ManualD-2AC Signal Cross Talk Into an AC Voltage ChannelACV Error Ratio = VACrms errorVACrms crosstalk Frequency crosstalk()() ()×

Page 89 - Status Byte Register

AppendicesMaking Mixed MeasurementsDD-3AC Signal Crosstalk Into a Temperature ChannelFrequency = 50, 60 HzTEMPERATURE Error Ratio = °CerrorVAC

Page 90

2620A/2625AUsers Manualxvi

Page 91 - Instrument Event Register

2620A/2625AUsers ManualD-4

Page 92

E-1Appendix EBinary Upload of Logged Data(LOG_BIN?) (2625A only)IntroductionThe LOG_BIN? <index> query can be used to quickly upload logged data

Page 93

2620A/2625AUsers ManualE-2/*-* decode(): Decode LOG_BIN? response string into raw byte stream**** Decoding is done on multiples of four input bytes:**

Page 94

AppendicesBinary Upload of Logged Data (LOG_BIN?) (2625A only)EE-3The raw data output array contains the information listed below. Note that the num

Page 95

2620A/2625AUsers ManualE-4The floating point format used is 32-bit with a 1-bit sign, 8-bit exponent, and 24-bitmantissa with the most significant bit

Page 96

AppendicesBinary Upload of Logged Data (LOG_BIN?) (2625A only)EE-5/* Import globals from main program */extern int timestamp[];extern int misc[];ext

Page 97

2620A/2625AUsers ManualE-6/* Globals convert() uses for destination */int timestamp[6]; /* Scan timestamp */int misc[3]; /* Temperatu

Page 98

F-1Appendix FRS-232 CablingIntroductionThis appendix details the RS-232 cabling between the instrument and a PC, instrumentcontroller (Fluke 17XXA ser

Page 99

2620A/2625AUsers ManualF-2For example, connection to a serial-to-parallel converter (when using a printer with aparallel input) may be as a DTE (cable

Page 100 - 2620A, 2625A

AppendicesRS-232 CablingFF-3RxTxDTRGNDDSRRTSCTS123456789RS-232CHYDRADB-9DCDRxTxDTRGNDDSRRTSCTSRI123456789COMPCDB-9RS43 CABLE(NULL MODEM)FEMALEMALEPI

Page 101 - Using the Computer Interface

1-1Chapter 1IntroductionTitle PageThe Hydra Series II Data Acquisition Unit... 1-3The Hydra Series

Page 102

2620A/2625AUsers ManualF-4RxTxDTRGNDDSRRTSCTS123456789RS-232CHYDRADB-9TxRxRTSCTSDSRGNDDCDDTRRICOMPCDB-25RS40 CABLE(OR EQUAL)FEMALEMALEPINSKEYTx – TRAN

Page 103

AppendicesRS-232 CablingFF-5RxTxDTRGNDDSRRTSCTS123456789RS-232CHYDRADB-9TxRxRTSCTSDSRGNDDCDDTRRIMODEMDB-25RS41 CABLE(OR EQUAL)FEMALEMALEPINSKEYTx –

Page 104

2620A/2625AUsers ManualF-6RxTxDTRGNDDSRRTSCTS123456789RS-232CHYDRADB-9TxRxRTSCTSDSRGNDDCDDTRRIPRINTERDB-25RS42 CABLE(OR EQUAL)FEMALEMALEPINSKEYTx – TR

Page 105

AppendicesRS-232 CablingFF-7DB-9CONNECTORCONNECTORSIDEDB-25CONNECTORSOLDERSIDEFEMALECONNECTORSIDESOLDERSIDEMALECONNECTORSIDESOLDERSIDEFEMALECONNECTO

Page 106

2620A/2625AUsers ManualF-8

Page 107

Hydra Configuration RecordSET-UP NAME_________________________________________ DATE_________________________SCAN RATE: q Slow TEMPERATURE UNITS q

Page 108 - M on the front panel

1Index—2—2-wire accuracy, A-6, A-9—4—4-terminal resistance test, 6-10—A—AC signal cross talk in a dc voltage channel, D-1AC signal cross talk into a f

Page 109

2620A/2625AUsers Manual2Front panel trigger control, 5-3—G—General, 3-22General information (RS-232 and IEEE-488), 4-13—H—How the instrument processes

Page 110

LIMITED WARRANTY & LIMITATION OF LIABILITYEach Fluke product is warranted to be free from defects in material and workmanship undernormal use and

Page 111 - Q triggers a single scan

2620A, 2625AUsers Manual1-2

Page 112

IntroductionThe Hydra Series II Data Acquisition Unit11-3NoteThis manual contains information and warnings that must be followed toensure safe operati

Page 113 - Q on the front panel

2620A, 2625AUsers Manual1-4Table 1-1. Hydra Features• Channel ScanningCan be continuous scanning, scanning at an interval time, single scans, or trigg

Page 114

IntroductionWhere to go From Here11-5AccessoriesAccessories available for the instrument are described in Table 1-2.Table 1-2. AccessoriesModel Descri

Page 115

2620A, 2625AUsers Manual1-6Getting StartedProvides a quick introduction to instrument setup and operation.Chapter 1 IntroductionDescribes standard fea

Page 116

2-1Chapter 2OverviewTitle PageIntroduction ... 2-3

Page 117 - Additional Considerations

2620A, 2625AUsers Manual2-2

Page 118

OverviewIntroduction22-3IntroductionChapter 2 provides an overview of the major features of the instrument. Comprehensivedetails on all instrument fea

Page 119 - Advanced Trigger Mechanisms

2620A, 2625AUsers Manual2-4Line Power WarningTo avoid shock hazard, connect the instrument power cord to apower receptacle with earth ground.Plug the

Page 120

OverviewSetting Up the Instrument22-5CALENABLEV 300VMAXPOWERREVIEWLASTMAXMINREMAUTOSCANMONSETMx+BFUNCALARM°C °F ROmV AC DCx1MkHzLIMITHILOOFFCALPRNEX

Page 121

iTable of ContentsChapter Title Page1 Introduction... 1-1The Hydr

Page 122 - Thermal Voltages

2620A, 2625AUsers Manual2-6REVIEWLASTMAXMINREMAUTOSCANMONx1MkLIMITHILOOFFCALPRNEXTSETMx+BFUNCALARM°C °F ROmV AC DCHzCHTR12ΩFoo03f.epsFigure 2-3. Left

Page 123

OverviewSetting Up the Instrument22-7Table 2-1. Display AnnunciatorsMON Indicates that the Monitor function is enabled.SCAN Indicates that the Scan fu

Page 124 - True RMS Measurements

2620A, 2625AUsers Manual2-8Table 2-1. Display Annunciators (cont)"1" Lit when alarm limit 1 is being defined. Also lit when displaying a mea

Page 125 - Making Mixed Measurements

OverviewOperating Modes22-9Input ChannelsThe instrument provides one input (channel 0) on the front panel and 20 inputs (channels1 .. 20) through a co

Page 126

2620A, 2625AUsers Manual2-10• Active Mode if this mode was in effect prior to the cycling of power. Scanning,monitoring, or combined scanning/monitor

Page 127 - Using Shielded Wiring

OverviewFront Panel Buttons22-11Front Panel ButtonsGo ahead and press any front panel button. The instrument always provides an audibleresponse to eac

Page 128 - In More Detail

2620A, 2625AUsers Manual2-12Table 2-2. Front Panel Pushbuttons (cont)M Turns the Monitor function on or off.I Allows you to change the scan interval.

Page 129 - Maintenance

OverviewSetting up a Channel22-131. Select a channel to set up: G D Look for the desired channel number in the right display.2. Press the following

Page 130

2620A, 2625AUsers Manual2-14NoteAny old alarm status/limits, Review array values, or scaling parametersare automatically cleared whenever you change a

Page 131 - Line Fuse

OverviewSetting the Scan Interval22-15Mx+B ScalingThe menu for setting Mx+B scaling values takes you through the following steps:• Set the M value (s

Page 132 - Performance Tests

2620A/2625AUsers ManualiiUsing the Scan Function... 2-16Reviewing Cha

Page 133

2620A, 2625AUsers Manual2-16Using the Monitor FunctionThe Monitor function repeatedly measures the displayed channel. Press M to activatethe Monitor f

Page 134

OverviewViewing the Totalizer Count22-17To clear out the contents of the Review array, press N to call the review data up tothe display, and then sele

Page 135 - Channel Integrity Test

2620A, 2625AUsers Manual2-18Using the Rack Mount KitUse the M00-200-634 Rack Mount Kit to mount the instrument in a standard 19-inchrack. First, rotat

Page 136

3-1Chapter 3Operating the Instrument from the FrontPanelTitle PageIntroduction ...

Page 137

2620A, 2625AUsers Manual3-2Front Panel Review Only Function... 3-26Front Panel Monitor Onl

Page 138 - 4-Terminal Resistance Test

Operating the Instrument from the Front PanelIntroduction33-3IntroductionChapter 3 describes how to use the instrument features that were introduced i

Page 139

2620A, 2625AUsers Manual3-4Other Displayed DataAn array of "MIN", "MAX", and "LAST" values for each channel is updated w

Page 140 - (4-WIRE)

Operating the Instrument from the Front PanelChannel Configuration33-5Table 3-1. Configuration Reset SettingsPerform a Configuration Reset to restore

Page 141

2620A, 2625AUsers Manual3-6through both a known resistance and the sensed resistance. The resulting voltages aremeasured and appropriate conversions a

Page 142 - RTD Temperature Accuracy Test

Operating the Instrument from the Front PanelChannel Configuration33-7Table 3-3. ResistanceChannel FunctionRange(Note 1)TerminalsPRESSTHESEBUTTONS:TOS

Page 143

Contents (continued)iiiAutoprint: Computer Interface Control... 4-5Autoprint: Output Format...

Page 144 - Digital Input Test

2620A, 2625AUsers Manual3-8Table 3-5. Thermocouple TemperatureChannel FunctionRange(Note)PRESSTHESEBUTTONS:TOSELECTFROMTHESECHOICES:1..20OFFV DCV ACΩH

Page 145 - Totalizer Test

Operating the Instrument from the Front PanelChannel Configuration33-9Table 3-6. RTD Temperature Channel FunctionType(Note 1)Terminals(Note 2)R0(Ice

Page 146 - Totalizer Sensitivity Test

2620A, 2625AUsers Manual3-10Alarm evaluation is not carried out for a channel if:• The limit sense is changed to "OFF". Alarm checking and

Page 147 - Dedicated Alarm Output Test

Operating the Instrument from the Front PanelChannel Configuration33-11Alarm annunciation is disabled when the instrument is in Inactive or Configurat

Page 148

2620A, 2625AUsers Manual3-12At any Configuration Reset (power up C or computer interface *RST), alarm limits onchannels 4 through 20 are assigned to D

Page 149 - Calibration

Operating the Instrument from the Front PanelChannel Configuration33-13be changed at any point is brightly lit (solid for digits, flashing for other a

Page 150 - Variations in the Display

2620A, 2625AUsers Manual3-14Table 3-9. Mx+B SelectionChannelSign, MValueDecimalPointPositionMultiplier(Note 1)PRESSTHESEBUTTONS:GDBGDHJEGDHJEGDHJETO S

Page 151 - Appendices

Operating the Instrument from the Front PanelInstrument Configuration33-15This number editing technique occurs during Configuration Mode operations wh

Page 152

2620A, 2625AUsers Manual3-16Table 3-11. Measurement Rate SelectionPress these buttons: RATE(KJ)] GDETo select from thesechoices:SLOFAST(Completes sele

Page 153 - Specifications

Operating the Instrument from the Front PanelMeasurement Connections33-17Setting Date and Time of DayThe instrument features a built-in, battery-maint

Page 154 - DC Voltage Inputs

2620A/2625AUsers ManualivIsolated and Shielded Sensor Configuration ... 5-11In More Detail...

Page 155 - Thermocouple Inputs

2620A, 2625AUsers Manual3-18DC Volts, AC Volts, Frequency, and ThermocouplesAny analog input channel (0 through 20) can be used to measure dc volts, a

Page 156

Operating the Instrument from the Front PanelMeasurement Connections33-19LHLHLHHLHLHLHLHLHLHLHLLHLHHLHLHLHLHLHLHLHLHL HLHLHLHLHL HLHLHLHL HLHLHLHLHLHL

Page 157 - RTD Inputs

2620A, 2625AUsers Manual3-20Resistance and RTDFor all channels (0 through 20), 2-terminal resistance or RTD measurements are allowed.Four-terminal mea

Page 158 - AC Voltage Inputs

Operating the Instrument from the Front PanelMeasurement Connections33-211211 13 14 15 16 17 18 19 2021 345678910SOURCE(4-WIRE)SENSE(4-WIRE)H L H LH L

Page 159 - Appendices

2620A, 2625AUsers Manual3-22TotalizingGeneralEvent counting (totalizing) is commonly used on production lines for counting items.The instrument counts

Page 160

Operating the Instrument from the Front PanelList Button Functions33-23Table 3-15. Review ArrayActivate (Note 1) Review PointsDeactivate(Note 3)NH JN2

Page 161 - Ohms Inputs

2620A, 2625AUsers Manual3-2407:41:37 02/09/91CH LAST VALUE MAX VALUE MIN VALUE 1: 097.32 mVDC 098.51 mVDC 096.10 mVDC 2: 0.

Page 162 - Frequency Inputs

Operating the Instrument from the Front PanelAutoprint33-25AutoprintThe front panel setup procedure is summarized in Table 3-17. Begin this procedure

Page 163 - Typical Scanning Rate

2620A, 2625AUsers Manual3-26Table 3-17. Autoprint/Memory Storage SelectionDestination(“dESt”) (Note1)Mode (“MOdE”)(Note 2)Press thesebuttons:PMODEKU)G

Page 164 - Digital Inputs

Operating the Instrument from the Front PanelREM Annunciator33-27G and D can now be used to change the monitored channel. All other front panelbuttons

Page 165 - Trigger Input

vList of TablesTable Title Page1-1. Hydra Features...

Page 166 - Environmental

2620A, 2625AUsers Manual3-28

Page 167

4-1Chapter 4Using the Computer InterfaceTitle PageIntroduction ...

Page 168 - 2620A Options

2620A, 2625AUsers Manual4-2Status Byte Register... 4-19Reading the Stat

Page 169 - Appendix B

Using the Computer InterfaceIntroduction44-3IntroductionThe instrument can be operated from a host via commands sent through the rear panelcomputer in

Page 170

2620A, 2625AUsers Manual4-4Setting Communication Parameters (RS-232)Baud rate ("bAUd"), parity ("PAR"), and echo ("Echo"

Page 171 - Requirements

Using the Computer InterfaceUsing the RS-232 Computer Interface44-55. Press G or D to scroll to odd, even, or no parity, respectively. Press EE tosel

Page 172

2620A, 2625AUsers Manual4-610:33:45 5/11/90Lines following the time and date contain measurement data for channels that have beenset up for this sessi

Page 173

Using the Computer InterfaceUsing the RS-232 Computer Interface44-7Data for the oldest set of scan readings in Hydra Series II Data Logger memory can

Page 174

2620A, 2625AUsers Manual4-8To connect the instrument to a specific brand of RS-232 printer, use the cable that wouldbe used to connect that printer to

Page 175

Using the Computer InterfaceUsing the IEEE-488 Interface44-9RS-232 PromptsThe instrument parses and executes, in turn, each command received from the

Page 176

2620A/2625AUsers Manualvi6-3. Performance Tests (Voltage, Resistance, and Frequency) ... 6-86-4. Performance Tests fo

Page 177 - Appendix D

2620A, 2625AUsers Manual4-1010 ’ EXAMPLE.BAS Hydra program to scan VDC, VAC, OHMS, FREQ, or TEMP20 ’ - initialize RS232 communication and set up

Page 178

Using the Computer InterfaceUsing the IEEE-488 Interface44-11500 PRINT #1, "FUNC " + STR$(I) + "," + CMD$510 GOSUB 80

Page 179

2620A, 2625AUsers Manual4-12Table 4-2. IEEE-488.1 CapabilitiesCapability DescriptionSH1 and AH1 Read and write bus handshaking, including hold off.T5

Page 180

Using the Computer InterfaceGeneral Information (RS-232 and IEEE-488)44-132. Press D to scroll to "IEEE"; then press E to enable the IEEE-4

Page 181 - Decoding the ASCII String

2620A, 2625AUsers Manual4-14Input StringsThe instrument processes and executes valid input strings sent by the host. A valid inputstring is one or mor

Page 182

Using the Computer InterfaceGeneral Information (RS-232 and IEEE-488)44-15Select ohms function for channel 1Select 30-kilohm rangeSelect 2-wire (2T) c

Page 183 - Floating Point Conversion

2620A, 2625AUsers Manual4-16Sending Numeric Values to the Instrument (RS-232 and IEEE-488)Numeric values can be sent to the instrument as integers, re

Page 184

Using the Computer InterfaceGeneral Information (RS-232 and IEEE-488)44-17loaded, the Message Available (MAV) bit in the Status Byte Register is set t

Page 185

2620A, 2625AUsers Manual4-180123456701234567&&&&&&&&Logical ORStandardEvent Status RegisterRead Using *ESR?StandardEve

Page 186

Using the Computer InterfaceGeneral Information (RS-232 and IEEE-488)44-19Table 4-4. Status Byte RegisterBit Name Description0 IEB Instrument Event Bi

Page 187 - Connections

viiList of FiguresFigure Title Page2-1. Adjusting Handle...

Page 188

2620A, 2625AUsers Manual4-20Table 4-5. Event Status RegisterBit Name Description0 OPC Operation Complete. Set true (1) upon execution of the *OPC comm

Page 189

Using the Computer InterfaceGeneral Information (RS-232 and IEEE-488)44-21Service Request Enable RegisterThe Service Request Enable Register (SRE) is

Page 190

2620A, 2625AUsers Manual4-22Table 4-6. Instrument Event Register (IER)NoteWhenever the Instrument Event Register is read, the condition bits are clear

Page 191

Using the Computer InterfaceComputer Interface Command Set44-23Table 4-7. Command and Query SummaryAlarmsALARMS? Active Alarms QueryALARM_ASSOC Associ

Page 192

2620A, 2625AUsers Manual4-24Table 4-7. Command and Query Summary (cont)LockLOCK Lock/unlock front panel control keysLOCK? Returns instrument front pan

Page 193

Using the Computer InterfaceComputer Interface Command Set44-25Table 4-7. Command and Query Summary (cont)Response FormatFORMAT Response FormatFORMAT?

Page 194

2620A, 2625AUsers Manual4-26Table 4-8. Command and Query Reference*CLS Clear StatusClears all event registers summarized in the status byte, except fo

Page 195 - Hydra Configuration Record

Using the Computer InterfaceComputer Interface Command Set44-27Table 4-8. Command and Query Reference (cont)*SRE Service Request EnableSets the Servic

Page 196

2620A, 2625AUsers Manual4-28Table 4-8. Command and Query Reference (cont)ALARMS? Active Alarms QueryReturns alarm status for the indicated channel(s).

Page 197

Using the Computer InterfaceComputer Interface Command Set44-29Table 4-8. Command and Query Reference (cont)ALARM_ASSOC? Alarm Association QueryReturn

Related models: 2620A

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