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HP 53A, E1351A OPEN, SCAN, Defining the Channel List, Opening Multiplexer Channels, Downloading a Scanning List:, Query Multiplexer Channel Open State

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Example	Opening Multiplexer Channels
	This example opens channel 00 of a multiplexer module card number 1 and
	channel 15 of multiplexer module card number 2 in a single switchbox.
	OPEN (@100,215)				100 opens channel 00 of card #1;
					215 opens channel 15 of card #2.
OPEN?	[ROUTe:]OPEN? <channel_list> returns the current state of the channel(s)
	queried. The channel list is in the form (@ccnn). The command returns 1
	if the channel is open or returns 0 if the channel is closed.
Comments	∙ Query is Software Readback: The [ROUTe:]OPEN? command
	returns the current software state of the channel(s) specified. It does
	not account for relay hardware failures.
Example	Query Multiplexer Channel Open State
	OPEN (@100,215)				100 opens channel 00 of card #1;
					215 opens channel 15 of card #2.
	OPEN? (@215)				Query state of channel 215.
SCAN	[ROUTe:]SCAN <channel_list> defines the channels to be scanned. The
	channel_list has the form (@ccnn), (@ccnn,ccnn), (@ccnn:ccnn) or
	(@ccnn:ccnn,ccnn:ccnn) where cc = card number (00-99) and nn = channel
	number (00-15).
Parameters

	Parameter Name		Parameter Type		Range of Values

	channel_list		Numeric		cc00 - cc15

Comments	∙ Channel List: Valid channel lists are:

–a single channel, use (@ccnn);

–for multiple channels, use (@ccnn,ccnn);

–sequential channels, use (@ccnn:ccnn);

–a group of sequential channels, use (@ccnn:ccnn,ccnn:ccnn);

–or any combination.

∙Defining the Channel List. When executing [ROUTe:]SCAN, the channel list is checked for valid card and channel numbers. An error is generated for an invalid channel list.

∙Downloading a Scanning List: The channel_list is automatically downloaded into RAM on the FET multiplexer modules for

TRIG:SOUR DBUS and TRIG:SOUR IMM trigger modes. The complete list is downloaded onto each module in an instrument. The channels are advanced with no direct intervention by the mainframe CPU during the scan. If an instrument contains mixed modules (FET and Relay Multiplexers), the scan list will not be downloaded.

Chapter 5

HP E1351A/53A 16-Channel FET Multiplexer Command Reference 65

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