Set Eoi With Eos On Writes; Type Of Compare On Eos; Eos Byte; Set Eoi At End Of Write - National Instruments AT-GPIB/TNT Getting Started

Changing Software Configuration Settings Appendix B

Set EOI with EOS on Writes

A yes response in this field causes the GPIB board to assert the EOI line when the EOS byte is
detected on a write operation. The default option for this characteristic is no.

Type of Compare on EOS

This field specifies the type of comparison to be made with the EOS byte. You can choose
whether to compare all eight bits or just the seven least significant bits, which are in ASCII or
ISO (International Standards Organization) format. The default option for this characteristic is
7-bit.
Note: This field is meaningful only if a yes response was given for either the Set EOI
with EOS on Write field or the Terminate Read on EOS field.

EOS Byte

Some devices can be programmed to terminate a read operation when a selected character is
detected. A linefeed character (hex 0A) is a common EOS byte. The default option for this
characteristic is hex 00.
Send EOI at End of Write
Some devices, as Listeners, require that the Talker terminate a data message by asserting the EOI
line with the last byte. A yes response causes the GPIB board to assert the EOI line on the last
data byte. The default option for this characteristic is yes.

System Controller (Board Characteristic Only)

The System Controller in a GPIB system is the device that maintains ultimate control over the
bus. A yes response would designate System Controller capability. The GPIB board is usually
designated as System Controller. The default option for this characteristic is yes.
Note: You should not have more than one designated System Controller in any GPIB system.
AT-GPIB/TNT for DOS Graphics B-8 © National Instruments Corp.