HP FET MULTIPLEXER E1351A/53A manual SCANMODE, Scanport and TRIGgerSOURce Dbus

Page 51

Example: Scanning

Using Scanning

Voltmeter

Configuration and

Digital Bus Triggering

In this example the HP E1326B Multimeter is combined with a FET multiplexer to form a scanning voltmeter VXIbus instrument. The multimeter is address 24, and the multiplexer is address 25, so the instrument secondary address is 03. The analog bus connector and the digital bus connector are connected between the modules. The TRIG:SOURce is set for DBUS. This configuration provides the fastest speed. Consult the HP E1326B/E1411B Multimeter User’s Manual for further information on multimeter settings. Note that the ARM:COUNt command does not apply to downloaded scan lists.

The sequence of operation is:

1.The multimeter automatically configures the multiplexer for

SCAN:MODE, SCAN:PORT and TRIGger:SOURce DBUS.

2.INIT closes first channel.

3.The channel closure causes a trigger output from the "Channel Closed" port.

4.The trigger causes the multimeter to make a measurement.

5.Measurement result is stored into multimeter memory.

6.Trigger is output from multimeter’s "Voltmeter Complete" port.

7.Trigger to "Advance Channel" port advances the channel list to the next channel.

8.Steps 3-7 are repeated for channels 101 through 115.

10	DIM Rdgs(1:16)	!Dimension array for readings
20	OUTPUT 70903;"*RST"	!Reset scanning voltmeter
30	OUTPUT 70903;"CONF:VOLT DC (@100:115)"
		!Sets multimeter to measure dc volts
40	OUTPUT 70903;"INIT"	!Starts scanning cycle
50	OUTPUT 70903;"FETC?"	!Get the readings
60	ENTER 70903;Rdgs(*)	!Place values in array
70	PRINT Rdgs(*)	!Print values
80	END

Chapter 4

Understanding the HP E1351A/53A FET Multiplexer Modules 51

Image 51

Contents Contents Understanding the HP E1351A/53A FET Multiplexer Modules Appendix C.HP E1351A/53A FET Multiplexer Error Messages HP E1351A/53A FET Multiplexer User’s Manual Contents Certification Documentation History According to ISO/IEC Guide 22 and EN July 20Page Business Reply Mail Page FET Multiplexer Module Description Using This ChapterMultimeter Connection Points Analog Bus ConnectorFET Multiplexer Module Block Diagram Output 70903OUTP on Switchbox and Scanning Voltmeter ConfigurationsDigital Bus and Triggering Initial Operation Programming LanguageConfiguring the HP E1351A/53A FET Multiplexer Modules Multiplexer Card Numbers Card Numbers for Single-Module SwitchboxesCard Numbers for Scanning Voltmeter Setting the Address SwitchSelecting the Interrupt Line Number Setting the Interrupt Line NumberCard ID Switch Setting the Card ID SwitchChannel FET Multiplexer Connector Pin-out Connecting User InputsSignal Conditioning Components/Current Shunts Adding Signal Conditioning Components/Current ShuntsWiring Guidelines Connecting Field WiringWiring a Terminal Module 10. Analog Bus and Digital Bus Connections Connecting Multimeters and Signal Generators11. Analog Bus and Digital Bus Cables Analog Bus and Digital Bus CablesPage Selecting Channels Using the HP E1351A/53A FET Multiplexer ModulesUsing the HP E1351A/53A FET Multiplexer Modules Chapter Matrix Commands Used in Chapter Multiplexer CommandsScanport None Connecting Switchbox Channels to Direct TerminalsCLOS? Closing Channels 02 and 09 for a Voltage Measurement Connecting Channels 02 and 10 for 4-Wire Ohms Measurement Example Making Voltage Measurements By Scanning Scanning a Range of Switchbox ChannelsScanning Channels 100 to 215 of a Two-Module Switchbox Example Making 4-Wire Ohms Measurements by Scanning Example Making 2-Wire Ohms Measurements by ScanningDownloading a Scan List Output 70904INIT Scanning a Switchbox without a Downloaded Scan ListOutput 70904STATOPERENAB Scanning a Switchbox with a Downloaded Scan ListConnecting the Analog Bus and Digital Bus Cables Scanning Voltmeter Configuration with HP E1326BTemperature Measurement Using a Thermocouple Using the HP E1351A/53A FET Multiplexer Modules Chapter Commands for Scanning Switchbox Channels Using Scanning Trigger SourcesScanning with External Instruments Scanning Commands Trigger Sources Example Scanning With External Instruments Output 70914OUTP on Example Scanning Using Trig Out Event In PortsOutput 722TRIG Extdcvmem Fifo SCANMODE, Scanport and TRIGgerSOURce Dbus Example Scan Complete Monitor Using the Scan Complete BitCommand Types Common Command FormatScpi Command Format ROUTeSCANMODE Volt Scpi Command Reference ABORt Subsystem SyntaxExample Stopping a Scan with ABORt Example Query Number of Scanning Cycles COUNtParameters CommentsExample Select Module #2 in a Switchbox for Monitoring DISPlayMONitorCARD Mode Example Enabling the Monitor ModeCONTinuous INITiateExample Query Continuous Scanning State Example Enabling Continuous ScansExample Enabling Trig Out Port OUTPutSTATe ∙ Downloaded Scans The OUTPut subsystem does not work with∙ Closing Channels To close ROUTe∙ Opening Channels To open ∙ Query is Software Readback The ROUTeCLOSe? commandExample Closing Multiplexer Channels Example Query Multiplexer Channel ClosureQuery Multiplexer Channel Open State ∙ Query is Software Readback The ROUTeOPEN? commandExample Opening Multiplexer Channels∙ Scanning Operation With a valid channel list Example Scanning Using External InstrumentsExample Query Scan Mode Example Query Scan Port Example Selecting the Abus PortExample Set and Query the SETTling Time Example Setting 16 μsec SETTling TimeOPERationENABle Example Enable the Status Register BitSTATus Example Reading the Description of Card #1 Module SYSTemCDEScription? ∙ 16-Channel FET Multiplexer Module DescriptionExample Reading the Model Number of a Card #1 Module Comments ∙ 16-Channel FET Multiplexer Module Model NumberIMMediate ∙ Executing the TRIGgerIMMediate Command a channel listExample Advancing Scan using the TRIGger Command TRIGger∙ Trig Out Port Shared by Switchboxes See the OUTPut command ∙ Enabling the Trigger Source The TRIGgerSOURce commandExample Scanning Using External Triggers Scanning Using Bus TriggersExample Query Trigger Source ANSI/IEEE Standard Ieee 488.2 Common CommandsScpi Commands Quick Reference Description Command Quick ReferencePage Power Off High to Low Maximum Voltage Screw Terminal Wire Size Watts/SlotConnectors Used P1 Maximum Offset Voltage Number of Slots Input Impedance Power RequirementsHP E1351A/53A FET Multiplexer Specifications Appendix a Register Addressing About This AppendixHP E1351A/53A Register-Based Programming Appendix B A16 Address Space Inside Command Module Or Mainframe A16 Address Space Outside Command Module Or MainframeRegister Descriptions Device Type Register Register Bit Descriptions Register moduleManufacturer ID Register Status/Control Register Enable IRQ ENScan Channel Delay Register Continuous Enable CNT EN Reset Pointer RST PTRScan Control Register C1 C0 Scan Channel Configuration RegisterDirect Channel Configuration Register A Tree Isolation Switch Disable A-D Valid Channel VLDDirect Control Register Executing CommandsROUTe ROUTeCLOSe channellist is equivalent to the following HP E1351A/53A Register-Based Programming Appendix B Register-Based Programming for Maximum Speed Decimal code Appendix B HP E1351A/53A Register-Based Programming Table B-1. Multimeter Command and Parameter Opcodes Multimeter Command Parameter OpcodesFigure B-3. Configuring the Multimeter Error Code Cause Multimeter Register-Based Programming Error CodesHP E1351A/53A FET Multiplexer Error Messages HP E1351A/53A FET Multiplexer Error Messages Appendix C Laddr IndexHP E1351A/53A FET Multiplexer User’s Manual Index HP-IB HP E1351A/53A FET Multiplexer User’s Manual Index HP E1351A/53A FET Multiplexer User’s Manual Index HP E1351A/53A FET Multiplexer User’s Manual Index HP E1351A/53A FET Multiplexer User’s Manual Index