README.TXT for HP E2261A QUAD RS-232 M-Module
Contents:
1 Introduction
2 VTL/VISA Specific Information
2.1 Instrument Addresses
2.2 Executing the Soft Front Panel without VTL/VISA
3 Using the HP E2261 Driver in Application Development Environments
3.1 C/C++
3.2 Microsoft Visual Basic
4.0 Known Defects
5.0 Obtaining New and Updated VXIplug&play Drivers
6.0 Revision History
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1. Introduction
The help file included with the HP E2261 VXIplug&play driver contains
instrument and programming information. This readme file contains
additional information for the HP VXIplug&play programmer.
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2. VTL/VISA Specific Information
The following topics refer to instances when the driver is used with
different versions of VTL.
2.1 Instrument Addresses
When using HP VXIplug&play instrument drivers, instrument addresses must
be all uppercase letters. Implementation of the addressing scheme is
vendor specific and some vendors support mixed cases. However, for
maximum portability, the instrument address should use uppercase
characters only.
For example: use "VXI0::56::INSTR" instead of "vxi0::56::instr"
2.2 Executing the Soft Front Panel without VTL/VISA
The VTL/VISA dynamic link library provides a communication library
between your program and the instrument. The SFP may be executed without
VISA or without the hpe2261.dll present. It will do a partial emulation
of the hardware for demo purposes.
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3. Using the HP E2261 Driver in Application Development Environments
This section offers suggestions on using the hpe2261.dll within
various application development environments.
3.1 C/C++
Refer to your C/C++ manuals for information on linking
and calling .DLLs.
Rebuilding the driver DLL should be done in a different directory than
the one the driver was installed in order to differentiate the changes.
3.2 Microsoft Visual Basic
Refer to the Microsoft Visual BASIC manual for information on calling DLLs.
The BASIC include file is hpe2261.bas, which is contained in the directory
~vxipnpwin95include. The ~ refers to the directory in the VXIPNP variable.
By default this is set to C:.
4.0 Known Defects
This driver does not work on National MXI 1 interface.
This driver does not work on HP VXLink interface.
With National Instruments MXI-2, you cannot simultaneously run two
programs that use E2261, even if each program uses a different E2261.
With National Instruments VXIpc-850, you cannot simultaneously run two
programs that use E2261, even if each program uses a different E2261.
With Windows 95, you cannot simultaneously run two programs that use
the E2261 through an HP Command Module.
With HP Command Module without D-SCPI driver loaded, you must install
the VISA GPIB-VXI support for HP Command Module.
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5.0 Obtaining New and Updated VXIplug&play Drivers
New and updated VXIplug&play drivers can be obtained from the World
Wide Web at:
http://www.hp.com/go/inst_drivers
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6.0 Revision History
A.01.00 July 1997 Initial Release.
hpe2261_32.dll A.01.00
A.01.01 November 1997 Updated Helpfile/Examples
hpe2261_32.dll A.01.01
hps2261.exe A.01.00
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