Common Problems
Appendix D
GPIB-410 User Manual
D-2
© National Instruments Corp.
Problem:
None of the input fields on the Capture, Trigger, Pattern
Generator, or Configuration Settings screens are highlighted
(no cursor present).
Possible Cause:
•
One or more operational modes are enabled which depend on
information contained in these screens (look for the appropriate
indicator in the title/status bar). You are not able to make changes
to these screens while one of these modes is active.
•
Monitor Input Mode is enabled (look for
MON
in the title/status bar),
meaning user input is currently directed into the upper window of
the screen. To redirect input into the lower window once again,
press <Alt-M> or the function key associated with the primary
screen currently displayed in the analyzer window.
•
The contrast on your display is set too low. Adjust the contrast until
the highlighted cursor appears.
Problem:
There is no indication that the final trigger pattern was
matched (there was no beep and the
TRG
indicator in the
title/status bar is still present), even though the required
pattern has already appeared a sufficient number of times
on the bus.
Possible Cause:
•
The GPIB-410 software does not acknowledge the occurrence of the
final pattern in a trigger sequence involving a capture until the next
capture of an enabled GPIB event occurs. Thus, if the final trigger
pattern does not correspond to any of the enabled GPIB events on
the Capture Settings screen and no events are captured following
the final occurrence of this pattern, completion of the trigger
sequence may never be indicated to the user.
•
The value contained in the Interrupt Jumper Setting field on the
Configuration Settings screen does not match the actual jumper
setting on the interface board. Check the hardware configuration
and enter the proper value.
