HP FET MULTIPLEXER E1351A/53A manual Scan Control Register, Scan Channel Delay Register

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Scan Control Register

The Scan Control Register allows you to clear the scan list, set the trigger mode and reset the pointer to the beginning of the scan list. This register is a READ-back register, allowing you to verify the state of the WRITE register.

base + 0616	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0

Write				Undefined					X	X	X	RST	CNT	IMM	DBS	CLR
												PTR	EN	EN	EN	SCN

Read				Undefined					1	1	1	1	CNT	IMM	DBS	CLR
													EN	EN	EN	SCN

Clear Scan List (CLR SCN)

Digital Bus Enable (DBS EN)

Immediate Enable (IMM EN)

Writing a one (1) in this bit clears the scan list. The bit must be set back to zero (0) after flushing. CLR SCN (Read) returns the state of the bit.

Writing a one (1) enables the digital bus trigger mode. A zero (0) disables it. DBS EN (Read) returns the state of the bit.

Writing a one (1) in this bit sets trigger to immediate, which means that as soon as the first channel is closed by the TRG INT, the entire scan list is run without any further triggering. Channel advance speed is determined by the delay time specified. This has extremely limited applications.

Continuous Enable (CNT EN)

Reset Pointer (RST PTR)

Writing a one (1) in this bit enables the card to continually cycle through the scan list. When this bit is enabled, the last channel in a scan list resets the pointer back to the beginning of the scan list.

Writing a one (1) resets the pointer back to the beginning of the scan list. CNT EN true automatically resets pointer at end of scan list. If CNT EN is set true, an interrupt also resets the pointer. If CNT EN is set false, the last channel in the scan list generates an interrupt if the channel is valid (VLD* set true).

Scan Channel Delay Register

The Scan Channel Delay Register sets the SETTling:TIME, the time between receipt of a channel closing trigger and the Channel Closed pulse. The delay is 2n μS and n has a range of 0 to 15. D3 to D0 set n, and D0 is the least significant bit. This register is a read-back register, allowing you to verify the state of the WRITE register.

base + 0816	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0

Write				Undefined					X	X	X	X	D3	D2	D1	D0

Read				Undefined					1	1	1	1	D3	D2	D1	D0

D3 - D0 D0 is the least significant bit, D3 is the most significant. These bits designate a number between 0 and 15 for n.

88 HP E1351A/53A Register-Based Programming

Appendix B

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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 July 20 According to ISO/IEC Guide 22 and ENPage Business Reply Mail Page Using This Chapter FET Multiplexer Module DescriptionAnalog Bus Connector Multimeter Connection PointsFET Multiplexer Module Block Diagram Switchbox and Scanning Voltmeter Configurations Output 70903OUTP onDigital Bus and Triggering Programming Language Initial OperationConfiguring the HP E1351A/53A FET Multiplexer Modules Card Numbers for Single-Module Switchboxes Multiplexer Card NumbersSetting the Address Switch Card Numbers for Scanning VoltmeterSetting the Interrupt Line Number Selecting the Interrupt Line NumberSetting the Card ID Switch Card ID SwitchConnecting User Inputs Channel FET Multiplexer Connector Pin-outAdding Signal Conditioning Components/Current Shunts Signal Conditioning Components/Current ShuntsConnecting Field Wiring Wiring GuidelinesWiring a Terminal Module Connecting Multimeters and Signal Generators 10. Analog Bus and Digital Bus ConnectionsAnalog Bus and Digital Bus Cables 11. Analog Bus and Digital Bus CablesPage Using the HP E1351A/53A FET Multiplexer Modules Selecting ChannelsUsing the HP E1351A/53A FET Multiplexer Modules Chapter Multiplexer Commands Matrix Commands Used in ChapterConnecting Switchbox Channels to Direct Terminals Scanport NoneCLOS? Closing Channels 02 and 09 for a Voltage Measurement Connecting Channels 02 and 10 for 4-Wire Ohms Measurement Scanning a Range of Switchbox Channels Example Making Voltage Measurements By ScanningScanning Channels 100 to 215 of a Two-Module Switchbox Example Making 2-Wire Ohms Measurements by Scanning Example Making 4-Wire Ohms Measurements by ScanningDownloading a Scan List Scanning a Switchbox without a Downloaded Scan List Output 70904INITScanning a Switchbox with a Downloaded Scan List Output 70904STATOPERENABScanning Voltmeter Configuration with HP E1326B Connecting the Analog Bus and Digital Bus CablesTemperature Measurement Using a Thermocouple Using the HP E1351A/53A FET Multiplexer Modules Chapter Using Scanning Trigger Sources Commands for Scanning Switchbox ChannelsScanning with External Instruments Scanning Commands Trigger Sources Example Scanning With External Instruments Example Scanning Using Trig Out Event In Ports Output 70914OUTP onOutput 722TRIG Extdcvmem Fifo SCANMODE, Scanport and TRIGgerSOURce Dbus Using the Scan Complete Bit Example Scan Complete MonitorCommon Command Format Command TypesScpi Command Format ROUTeSCANMODE Volt Scpi Command Reference Subsystem Syntax ABORtExample Stopping a Scan with ABORt COUNt ParametersComments Example Query Number of Scanning CyclesDISPlay Example Select Module #2 in a Switchbox for MonitoringMONitorCARD Example Enabling the Monitor Mode ModeINITiate CONTinuousExample Enabling Continuous Scans Example Query Continuous Scanning StateOUTPut STATe∙ Downloaded Scans The OUTPut subsystem does not work with Example Enabling Trig Out PortROUTe ∙ Closing Channels To close∙ Query is Software Readback The ROUTeCLOSe? command Example Closing Multiplexer ChannelsExample Query Multiplexer Channel Closure ∙ Opening Channels To open∙ Query is Software Readback The ROUTeOPEN? command ExampleOpening Multiplexer Channels Query Multiplexer Channel Open StateExample Scanning Using External Instruments ∙ Scanning Operation With a valid channel listExample Query Scan Mode Example Selecting the Abus Port Example Query Scan PortExample Setting 16 μsec SETTling Time Example Set and Query the SETTling TimeExample Enable the Status Register Bit OPERationENABleSTATus SYSTem CDEScription?∙ 16-Channel FET Multiplexer Module Description Example Reading the Description of Card #1 ModuleComments ∙ 16-Channel FET Multiplexer Module Model Number Example Reading the Model Number of a Card #1 Module∙ Executing the TRIGgerIMMediate Command a channel list Example Advancing Scan using the TRIGger CommandTRIGger IMMediate∙ Enabling the Trigger Source The TRIGgerSOURce command ∙ Trig Out Port Shared by Switchboxes See the OUTPut commandScanning Using Bus Triggers Example Scanning Using External TriggersExample Query Trigger Source Ieee 488.2 Common Commands ANSI/IEEE StandardCommand Quick Reference Scpi Commands Quick Reference DescriptionPage Maximum Voltage Screw Terminal Wire Size Watts/Slot Connectors Used P1 Maximum Offset Voltage Number of SlotsInput Impedance Power Requirements Power Off High to LowHP E1351A/53A FET Multiplexer Specifications Appendix a About This Appendix Register AddressingHP E1351A/53A Register-Based Programming Appendix B A16 Address Space Outside Command Module Or Mainframe A16 Address Space Inside Command Module Or MainframeRegister Descriptions Device Type Register Register module Register Bit DescriptionsManufacturer ID Register Enable IRQ EN Status/Control RegisterContinuous Enable CNT EN Reset Pointer RST PTR Scan Channel Delay RegisterScan Control Register Scan Channel Configuration Register Direct Channel Configuration RegisterA Tree Isolation Switch Disable A-D Valid Channel VLD C1 C0Executing Commands Direct Control RegisterROUTe 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 Multimeter Command Parameter Opcodes Table B-1. Multimeter Command and Parameter OpcodesFigure B-3. Configuring the Multimeter Multimeter Register-Based Programming Error Codes Error Code CauseHP E1351A/53A FET Multiplexer Error Messages HP E1351A/53A FET Multiplexer Error Messages Appendix C Index LaddrHP 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