VISA-VXI Communication Parameters
You should configure the VISA-VXI object to match your instrument's communication configuration, which you typically set with its front panel.
Address
The following parameters are associated with configuring the VISA-VXI address
- Select an Adaptor - You can create a VISA-VXI object that uses the VISA standard as implemented by Agilent Technologies, National Instruments, or Tektronix.
- Communication Address - Each VXI instrument must have a unique chassis index and logical address.
- Chassis Index - Specify the index number of the VXI chassis
- Logical Address - Specify the instrument's logical address.
Termination
The following parameters are associated with completing read and write operations.
- EOSMode - Specify when the End-Of-String (EOS) character is used.
- none - The EOS character is ignored.
- read - The EOS character is used to complete read operations.
- write - The EOS character is included with each write operation. When the EOS character is received by the instrument, its EOI line is asserted.
- read&write - The EOS character is used for both read and write operations.
- EOSCharCode - Specify the EOS character. The value can range from 0 to 255, or you can specify the equivalent ASCII character. For example, to configure EOSCharCode to a carriage return, you specify the value to be 'CR' or 13. EOSCharCode replaces \n wherever it appears in the command sent to the instrument.
- EOIMode - Specify if the End Or Identify (EOI) line is asserted at the end of a write operation. The choices are:
- Assert the EOI line at the end of write
- Don't assert the EOI line at the end of write
Triggering
- Select the parameters associated with sending a trigger message to the instrument. You execute a trigger using the TRIGGER command.
- TriggerType - Specify the trigger type to be software or hardware. For software triggers, the Word Serial Trigger command is sent to the instrument. For hardware triggers, the trigger is sent on the hardware line specified by TriggerLine.
- TriggerLine - Specify the trigger line used for hardware triggers.