HP 53A, E1351A OUTPut, [ROUTe:]

INITiate[:IMMediate] is equivalent to writing a one to the TRG INT in the Status/Control Register. The TRG INT sets itself back to zero after pulsing the FET. If you have a multiple-module configuration and a downloaded scan list, the module with the first channel on the scan list must be the last one to receive the TRG INT. The scan cycle will start as soon as the card with a valid channel receives TRG INT.

OUTPut The OUTPut[:STATe] command does not have an equivalent in register-based programming.

[ROUTe:] [ROUTe:]CLOSe <channel_list> is equivalent to the following:

∙DIR in the Status/Control Register is enabled.

∙D0 to D3 is set to a channel number in the Direct Channel Configuration Register.

[ROUTe:]OPEN <channel_list> can be implemented by setting VLD* false in either the Scan Channel Configuration Register or the Direct Control Register (whichever one closed the channel). It can also be implemented by toggling the DIR bit in the Status/Control Register.

For [ROUTe:]SCAN <channel_list>, the complete scan list must be loaded in each module in a multiple-module configuration. The channel is set valid if it is in that module, and invalid in the other modules. The channel list is downloaded in the following way:

∙Set CLR SCN in Scan Control Register to one, then back to zero, to clear the previous scan list.

∙DIR in the Status/Control Register is set to false.

∙Channel number is set in D0 to D3 in the Scan Channel Configuration Register.

The example below shows how to set a scan list for channels (@100,101,200,201):

∙Write to the Scan Channel Configuration Register on card 1:

VLD* true (0), 0000 to D3-D0	Sets channel 100.
VLD* true (0), 0001 to D3-D0	Sets channel 101.
VLD* false (1), XXXX to D3-D0	Reserves position in scan list for
	channel 200.
VLD* false (1), XXXX to D3-D0	Reserves position in scan list for
	channel 201.

∙Write to the Scan Channel Configuration Register on card 2:

VLD* false (1), XXXX to D3-D0	Reserves position in scan list for
	channel 100.
VLD* false (1), XXXX to D3-D0	Reserves position in scan list for
	channel 101.
VLD* true (0), 0000 to D3-D0	Sets channel 200.
VLD* true (0), 0001 to D3-D0	Sets channel 201.

Appendix B

HP E1351A/53A Register-Based Programming 91

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