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HP 53A, E1351A :SOURce, Command:, Using the, *RST Condition:, Related Commands:, Using Bus Triggers:, Using Digital Bus Trigger:, Using External Trigger Inputs:

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:SOURce TRIGger:SOURce BUS DBUS EXTernal HOLD IMMediate specifies

the trigger source to advance the channel list during scanning.

Parameters

	Parameter Name	Parameter Type	Range of Values

	BUS	Discrete	*TRG command

	DBUS	Discrete	Digital Bus

	EXTernal	Discrete	Event In port

	HOLD	Discrete	Hold Triggering

	IMMediate	Discrete	Continuous Triggering

Comments	∙ Enabling the Trigger Source: The TRIGger:SOURce command

only selects the trigger source. The INITiate[:IMMediate] command enables the trigger source.

∙Using the TRIG Command: You can use TRIGger[:IMMediate] to advance the scan when TRIGger:SOURce BUS or TRIGger:SOURce HOLD is selected.

∙Using Digital Bus Trigger: TRIGger:SOURce DBUS selects the digital bus on the multiplexer as the trigger. Any open collector TTL trigger source can be wired to the "Channel Advance" lead. A negative-going pulse triggers the multiplexer and advances it to the next channel on the scanning list. After the SETTling:TIME delay, the multiplexer asserts "Channel Closed" on the digital bus.

∙Using External Trigger Inputs: With TRIGger:SOURce EXTernal selected, only one switchbox at a time can use the external trigger input at the HP E1300A/E1301A Mainframe’s "Event In" port. The trigger input is assigned to the first switchbox requesting the external trigger source.

∙Assigning External Trigger: A switchbox assigned with

TRIG:SOUR EXT remains assigned to that source until the switchbox receives a command to change the source. When the source is changed, the external trigger source is available to another switchbox (with a TRIGger:SOURce EXTernal command). Another switchbox cannot receive an external trigger source if the source is already assigned, or an error is generated.

∙Using Bus Triggers: To trigger the switchbox with

TRIGger:SOURce BUS selected, use TRIGger[:IMMediate], the IEEE 488.2 common command *TRG or the HP-IB Group Execute Trigger (GET).

∙"Trig Out" Port Shared by Switchboxes: See the OUTPut command.

∙Related Commands: ABORt, [ROUTe:]SCAN, SETTling[:TIME], TRIGger

∙*RST Condition: TRIGger:SOURce IMMediate

74 HP E1351A/53A 16-Channel FET Multiplexer Command Reference

Chapter 5

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