User manual

 USB (TMC Protocol)
 RS-232
NOTE: Other than the Keithley Instruments or National Instruments USB-to-GPIB
adaptors all other interfaces must be direct interfaces. The Keithley I/O Layer was
not tested with USB-RS-232 adaptors or Ethernet-to-GPIB adaptors.
2.3 Supported Virtual Instrument Programming Interfaces
(VISA)
The following Virtual Instrument Software Architectures (VISA) are supported:
 National Instruments VISA (NI VISA)
If another version of VISA is already installed, then it may be used, but its
performance is not guaranteed.
Other VISAs can also be uninstalled and reinstalled as a secondary VISA, as
follows:
1. Uninstall the non-NI VISA software
a. Uninstall Tektronix VISA by selecting OpenChoice TekVISA from
the Windows Add or Remove Programs wizard (called Programs and
Features in Windows 7) list.
b. Uninstall Agilent VISA by selecting Agilent I/O Libraries Suite from
the Windows Add or Remove Programs wizard (called Programs and
Features in Windows 7) list.
c. Uninstall other version of VISA by selecting the appropriate entry
from the Windows Add or Remove Programs (called Programs and
Features in Windows 7) wizard list.
2. Install Keithley I/O Layer
3. If the pre-existing version of VISA was supplied by Tektronix or Agilent,
you may safely reinstall that version of VISA once the Keithley I/O Layer
software installation is complete. When you reinstall Tektronix or Agilent
VISA, it may prompt you to preserve current VISA version, which you
should do. This will usually restore the operation of any dependent
applications or drivers.
4. If the pre-existing version of VISA was supplied by a vendor other than
Tektronix or Agilent, it is recommended that you do not reinstall it as this
will likely cause the Keithley I/O Layer software to malfunction.
3 Keithley I/O Layer Installation