Chapter 4
Software Reference
© National Instruments Corp.
4-3
GPIB-410 User Manual
Data Line Input (Character)
Use this field to assert any ASCII character onto the GPIB data lines.
Each character entered is asserted immediately onto the bus and the
Monitor window indicators are adjusted accordingly. Only the data lines
are affected by this operation–no source handshaking is performed.
Data Line Input (Hexadecimal)
Use this field to assert any one-byte hexadecimal value onto the GPIB
data lines, four bits at a time. Each hex digit entered is asserted
immediately onto the bus and the Monitor window indicators are
adjusted accordingly. Only the data lines are affected by this operation–
no source handshaking is performed.
Data and Control Line Input (Binary)
Use this field to assert any combination of the sixteen GPIB signal lines.
Each line is controlled by a simulated toggle switch indicator which can
be turned on or off by pressing the indicated key.
As indicated when this field is selected, the topmost row of letters on
the keyboard manipulates the eight bus data lines and the next row of
letters manipulates the eight bus control lines. Use the Insert key
(<Ins>) to place a single 8-bit ASCII or 2-digit hexadecimal value
directly onto the data lines of the bus.
