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HP 53A, E1351A Voltmeter, Using Scanning, Example: Scanning, Configuration and, Digital Bus Triggering

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Example: Scanning

Using ScanningVoltmeterConfiguration andDigital 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

Contents

Contents Page Page Page Page Page July 20 Page Reader Comment Sheet BUSINESS REPLY MAIL HEWLETT-PACKARDCOMPANY Page Getting Started with the HP E1351A/53A Using This Chapter FET Multiplexer Module Description Multimeter Connection Points Analog Bus Connector Page Switchbox and Scanning Voltmeter Configurations Digital Bus and Triggering Programming Language Initial Operation Configuring the HP E1351A/53A FET Multiplexer Modules Warnings and Cautions Multiplexer Card Numbers Setting the Address Switch Selecting the Interrupt Line Number Setting the Card ID Switch Connecting User Inputs Adding Signal Conditioning Components/Current Shunts Connecting Field Wiring Wiring a Terminal Module Connecting Multimeters and Signal Generators Analog Bus and Digital Bus Cables Page Using the HP E1351A/53A FET Multiplexer Modules Selecting Channels Page Multiplexer Commands Connecting Switchbox Channels to Direct Terminals Comments Connecting Switchbox Channels to Tree Terminals for Making Measurements Page Scanning a Range of Switchbox Channels Page Example: Making 2-WireOhms Measurements by Scanning Example: Making 4-WireOhms Measurements by Scanning Downloading a Scan List Scanning a Switchbox without a Downloaded Scan List Scanning a Switchbox with a Downloaded Scan List Scanning Voltmeter Configuration with HP E1326B Measuring Temperature Using Thermocouples (HP E1353A Module only) Comments Understanding the HP E1351A/53A FET Multiplexer Modules Commands for Scanning Switchbox Channels Using Scanning Trigger Sources Page Page Example: Scanning with External Instruments Using "Trig Out" and "Event In" Ports Using Stand-Alone Multimeter and Digital Bus Triggering Using Scanning Voltmeter Configuration and Digital Bus Triggering Using the Scan Complete Bit HP E1351A/53A 16-ChannelFET Multiplexer Command Reference Command Types Common Command Format SCPI Command Format Command Separator Abbreviated Commands Implied Commands Note SCPI Command Reference ABORt ARM DISPlay :MONitor:CARD :MONitor[:STATe] Monitoring Switchbox Channels: Selecting the Module to be Monitored: Monitor Mode on an HP 1301 Mainframe Display: Example Enabling the Monitor Mode INITiate Example Enabling Continuous Scans :CONTinuous Example Query Continuous Scanning State Starting the Scanning Cycle: ∙Stopping Scanning Cycles: See the ABORt command OUTPut [ROUTe:] Example Closing Multiplexer Channels CLOSe ∙ Query is Software Readback: The [ROUTe:]CLOSe? command Example Query Multiplexer Channel Closure OPEN Opening Multiplexer Channels OPEN ∙ Query is Software Readback: The [ROUTe:]OPEN? command Query Multiplexer Channel Open State SCAN ∙Scanning Operation: With a valid channel list Stopping Scan: Example Scanning Using External Instruments SCAN:MODE Order of Command Execution: Mode Description: Selecting the 4-Wire SCAN:MODE Example Query Scan Mode SCAN:PORT port Example Selecting the ABUS Port SCAN:PORT Example Query Scan Port SETTling[:TIME] Digital Bus Handshaking: Example Setting 16 μsec SETTling TIME SETTling[:TIME] Example Set and Query the SETTling TIME STATus :OPERation:ENABle SYSTem :CDEScription :CTYPe :ERRor TRIGger :SOURce ∙ Enabling the Trigger Source: The TRIGger:SOURce command Using the Using Digital Bus Trigger: Using External Trigger Inputs: Example Scanning Using External Triggers Scanning Using Bus Triggers :SOURce Example Query Trigger Source IEEE 488.2 Common Commands Command Quick Reference Page HP E1351A/53A FET Multiplexer Specifications Page HP E1351A/53A Register-Based Programming About This Appendix Register Addressing Page The Base Address A16 Address Space Outside the Command Module or Mainframe Register Descriptions Page Register Bit Descriptions Manufacturer ID Register Status/Control Register Scan Control Register Scan Channel Delay Register Scan Channel Configuration Register Configuration Bit (C1 - C0) Executing Commands OUTPut [ROUTe:] SYSTem TRIGger Register-BasedProgramming for Maximum Speed VLD A_D B_D decimal code: Page Multimeter Command and Parameter Opcodes Page Register-Based Programming Error Codes HP E1351A/53A FET Multiplexer Error Messages Page Index