HP 83487A User Manual page 72

Reference
In Case of Difficulty
If the plug-in does not operate
1 Make the following checks:
• Is the plug-in module firmly seated in the mainframe slot?
• Are the knurled screws at the bottom of the plug-in module finger-tight?
• Is a trigger signal connected to a trigger input?
• If other equipment, cables, and connectors are being used with the plug-in
module, are they connected properly and operating correctly?
• Review the procedure for the test being performed when the problem ap-
peared. Are all the settings correct? Can the problem be reproduced?
• Are the connectors clean? See
ments" on page 5-14
2 Perform the following procedures:
• Make sure the instrument is ready to acquire data by pressing Run.
• Find any signals on the channel inputs by pressing Autoscale.
• See if any signals are present at the channel inputs by pressing Trigger, Sweep,
freerun.
After viewing the signal, press triggered.
• Make sure Channel Display is on by pressing Channel, Display on off, on.
• Make sure the channel offset is adjusted so the waveform is not clipped off
the display.
• If you are using the plug-in module only as a trigger source, make sure at
least one other channel is turned on. If all of the channels are turned off, the
mainframe will not trigger.
5-4
"Cleaning Connections for Accurate Measure-
for more information.