HP FET MULTIPLEXER E1351A/53A manual Clos?

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Comments Isolation. The direct terminals provide a more accurate measurement than the tree terminals or the analog bus connector as the signal does not have to travel through the extra FET switches. The SCAN:PORT NONE command opens the tree isolation switches and isolates the direct terminals from the tree terminals and the analog bus connector.

The default value of SCAN:PORT is NONE for reset and power-on. If you have not specified a different SCAN:PORT since reset or power-on, you do not need to execute this command. You can also use the direct terminals with SCAN:PORT ABUS. The signal for a given closed channel will then be available at the direct terminal for that bank, the A tree terminal and the analog bus connector.

Closing Channels. The FET multiplexer module only allows one channel per card to be closed at a time, except for SCAN:MODE FRES (4-wire resistance measurements) where two channels are closed. You can close a channel on two different cards in the same instrument at the same time.

The SCAN <channel_list> command allows you to specify a list of channels to be closed sequentially. The FET multiplexer module uses a break-before-make procedure, so closed channels are opened before the next one on the list is closed. The channels are advanced according to the TRIGger mode selected.

Query Open/Closed Channels. The CLOSe? <channel_list> and OPEN? <channel_list> commands determine if the channel(s) in the channel list are open or closed, respectively. (The query command does not determine if, in the event of a hardware failure, the channel remains open/closed.) For example, to determine if channel 109 is closed, execute:

CLOS? (@109)

A response of "1" indicates the channel is closed, and a "0" indicates the channel is open. The reverse is true for the OPEN? <channel_list> command. The response for the OPEN? and CLOSe? commands are:

CLOS?	1	= Closed
	0	= Open
OPEN?	1 = Open
	0	= Closed

To find out which channel on a card is closed, use a channel list for the card.

CLOS? (@100:115)

and enter the response into a string variable. If channel 09 is closed, the response will be:

0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0

NOTE: You must read the response after sending a query command or the switchbox will generate an error.

Chapter 3

Using the HP E1351A/53A FET Multiplexer Modules 33

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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 Parameters COUNtComments Example Query Number of Scanning CyclesExample Select Module #2 in a Switchbox for Monitoring DISPlayMONitorCARD Mode Example Enabling the Monitor ModeCONTinuous INITiateExample Query Continuous Scanning State Example Enabling Continuous ScansSTATe OUTPut∙ Downloaded Scans The OUTPut subsystem does not work with Example Enabling Trig Out Port∙ Closing Channels To close ROUTeExample Closing Multiplexer Channels ∙ Query is Software Readback The ROUTeCLOSe? commandExample Query Multiplexer Channel Closure ∙ Opening Channels To openExample ∙ Query is Software Readback The ROUTeOPEN? commandOpening Multiplexer Channels Query Multiplexer Channel Open State∙ 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 CDEScription? SYSTem∙ 16-Channel FET Multiplexer Module Description Example Reading the Description of Card #1 ModuleExample Reading the Model Number of a Card #1 Module Comments ∙ 16-Channel FET Multiplexer Module Model NumberExample Advancing Scan using the TRIGger Command ∙ Executing the TRIGgerIMMediate Command a channel listTRIGger IMMediate∙ 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 Connectors Used P1 Maximum Offset Voltage Number of Slots Maximum Voltage Screw Terminal Wire Size Watts/SlotInput Impedance Power Requirements Power Off High to LowHP 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 Direct Channel Configuration Register Scan Channel Configuration RegisterA Tree Isolation Switch Disable A-D Valid Channel VLD C1 C0Direct 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