GPIB Communication Parameters
You should configure the GPIB object to match your instrument's communication configuration, which you typically set with its front panel.

• Select an Adaptor
• Communication Address
• Termination

Select an Adaptor
You can create a GPIB object associated with an Agilent, CBI, CEC, Keithley, IOTech, or National Instruments (NI) GPIB controller.

Communication Address
Each GPIB instrument must have a unique board index and primary address. An optional secondary address can also be used.

• Board Index - Specify the index number of the GPIB board (controller).
• Primary Address - Specify the instrument's primary address. The value can range from 0 to 30.
• Secondary Address - Specify the instrument's secondary address. The value can range from 96 to 126, or it can be 0 indicating that no secondary address is used.

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, which represents the ASCII code for the character. For example, 13 represents a carriage return, while 10 represents a line feed. EOSCharCode replaces \n wherever it appears in the command sent to the instrument.
• CompareBits - Specify the number of bits that must match the EOS character to complete a read or write operation, or to assert the EOI line. The choices are:
  • Match the lower 7 bits
  • Match all 8 bits
• EOIMode - Specify if the EOI line is asserted at the end of a write operation. The choices are:
  • Assert the EOI line
  • Don't assert the EOI line