User`s manual

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Tektronix to VXI Technology Cross-Ref. Guide 137
Class or Window Function
Utility tkvx4801_getModelCode
Utility tkvx4801_getVisaRev
Utility tkvx4801_sleep
Close tkvx4801_close
Exceptions
1.) Use of the vti4801 Driver requires the vtvm1548 driver to be installed on the system.
2.) The active levels for tri-state control on the VTI4801 are not selectable. A call to this function
will return an error if the passed parameter attempts to set the Tri-State level to
tkvx4801_ACTIVE_LEVEL_LOW. The External Tri-State Level is only valid in the
tkvx4801_ACTIVE_LEVEL_HIGH state. When the VM1548 is in the INPUT mode, the
device is in Input when the I/O line is High for a given port, and Output when the I/O line is
low.
3.) Interrupt configuration via tkvx4801_enableDisableInterrupt does not support both
RFDHandshake and DRDHandshake simultaneously.
4.) Simultaneous Input and Output Strobe updates are not supported.
5.) The Logical Address for the VTI4801 is the base logical address of the C-size module. There
will be two consecutive Logical Addresses following this which will be consumed.
6.) The Base Logical Address MUST be set to a multiple of 4.
7.) The tkvx4801_queryStatus function is currently not implemented on the vti4801 Driver.
Consult the factory for updates if this function is required for your application.
8.) There is no Soft Front Panel implementing the vti4801 driver. For instrument functionality
evaluation, use the vtvm1548 Driver Soft Front Panel.