HP FET MULTIPLEXER E1351A/53A specs

Register-Based Programming for Maximum Speed

This is an outline of the algorithm that needs to be followed to have the HP E1326B 51¤2 Digit Multimeter do high-speed scanning using the HP E1351A 16-Channel FET Multiplexer. This procedure programs the multimeter and downloads a scan list to the FET multiplexer so the hardware controls the entire scanning process. The HP E1326B has several things that should be understood when doing register programming.

1.Table B-1 on page 96 lists the multimeter’s commands. When doing any of these commands, you are writing to registers which are read by the multimeter’s voltmeter microprocessor. It is important to follow the procedure in Figure B-3 on page 97 on how to send commands. This will enable you to handshake with the E1326B microprocessor as you can easily write commands faster than the processor can execute them.

2.In order to program the HP E1326B Multimeter to take readings with the HP E1351A FET Multiplexer at its highest speed, do the commands from Table B-1 on page 96. Note that all values in Table B-1 are specified in decimal.

set the function	dcv
set the range	1V

Note: You must have a fixed range to do 13k. Auto range will do 2.5k.

set the aperture10 msec

Note: This will cause readings to be returned as 16 bits.

set the auto zero	off or once
set offset Compensation	off
set trigger source	Immediate
set trigger count	1
set trigger delay	0
set Sample Count	16

This should be the total number of A/D readings that you will take (for example, once through a 16 channel list = 16, 10 times through a 16 channel list = 160).

set sample Source	Timer
This is the time between A/D readings.
set sample Period	76ms

76 msec is the minimum or fastest A/D time.

set trigger arm

armed

This arms the DVM to take all of the reading specified above.

Do not execute the next command yet. You still need to set the scan list in the HP E1351A. Trigger immediate will start everything.

3.Now download the channel list to the HP E1351A

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

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

Appendix B

HP E1351A/53A Register-Based Programming 93

Image 93

HP FET MULTIPLEXER E1351A/53A manual Register-Based Programming for Maximum Speed

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 Chapter Multimeter Connection Points Analog Bus Connector FET Multiplexer Module Block Diagram Output 70903OUTP on Switchbox and Scanning Voltmeter Configurations Digital Bus and Triggering Initial Operation Programming Language Configuring the HP E1351A/53A FET Multiplexer Modules Multiplexer Card Numbers Card Numbers for Single-Module Switchboxes Card Numbers for Scanning Voltmeter Setting the Address Switch Selecting the Interrupt Line Number Setting the Interrupt Line Number Card ID Switch Setting the Card ID Switch Channel FET Multiplexer Connector Pin-out Connecting User Inputs Signal Conditioning Components/Current Shunts Adding Signal Conditioning Components/Current Shunts Wiring Guidelines Connecting Field Wiring Wiring a Terminal Module 10. Analog Bus and Digital Bus Connections Connecting Multimeters and Signal Generators 11. Analog Bus and Digital Bus Cables Analog Bus and Digital Bus CablesPage Selecting Channels Using the HP E1351A/53A FET Multiplexer Modules Using the HP E1351A/53A FET Multiplexer Modules Chapter Matrix Commands Used in Chapter Multiplexer Commands Scanport None Connecting Switchbox Channels to Direct Terminals CLOS? 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 Channels Scanning Channels 100 to 215 of a Two-Module Switchbox Example Making 4-Wire Ohms Measurements by Scanning Example Making 2-Wire Ohms Measurements by Scanning Downloading a Scan List Output 70904INIT Scanning a Switchbox without a Downloaded Scan List Output 70904STATOPERENAB Scanning a Switchbox with a Downloaded Scan List Connecting the Analog Bus and Digital Bus Cables Scanning Voltmeter Configuration with HP E1326B Temperature 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 Ports Output 722TRIG Extdcvmem Fifo SCANMODE, Scanport and TRIGgerSOURce Dbus Example Scan Complete Monitor Using the Scan Complete Bit Command 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 Cycles Example Select Module #2 in a Switchbox for Monitoring DISPlayMONitorCARD Mode Example Enabling the Monitor Mode CONTinuous INITiate Example Query Continuous Scanning State Example Enabling Continuous Scans STATe OUTPut∙ Downloaded Scans The OUTPut subsystem does not work with Example Enabling Trig Out Port ∙ Closing Channels To close ROUTe Example Closing Multiplexer Channels ∙ Query is Software Readback The ROUTeCLOSe? commandExample Query Multiplexer Channel Closure ∙ Opening Channels To open Example ∙ 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 Instruments Example Query Scan Mode Example Query Scan Port Example Selecting the Abus Port Example Set and Query the SETTling Time Example Setting 16 μsec SETTling Time OPERationENABle Example Enable the Status Register BitSTATus CDEScription? SYSTem∙ 16-Channel FET Multiplexer Module Description Example Reading the Description of Card #1 Module Example Reading the Model Number of a Card #1 Module Comments ∙ 16-Channel FET Multiplexer Module Model Number Example 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 command Example Scanning Using External Triggers Scanning Using Bus TriggersExample Query Trigger Source ANSI/IEEE Standard Ieee 488.2 Common Commands Scpi 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 Low HP E1351A/53A FET Multiplexer Specifications Appendix a Register Addressing About This Appendix HP E1351A/53A Register-Based Programming Appendix B A16 Address Space Inside Command Module Or Mainframe A16 Address Space Outside Command Module Or Mainframe Register Descriptions Device Type Register Register Bit Descriptions Register moduleManufacturer ID Register Status/Control Register Enable IRQ EN Scan 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 C0 Direct Control Register Executing Commands ROUTe 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 Opcodes Figure B-3. Configuring the Multimeter Error Code Cause Multimeter Register-Based Programming Error Codes HP E1351A/53A FET Multiplexer Error Messages HP E1351A/53A FET Multiplexer Error Messages Appendix C Laddr Index HP 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