4-4
Reference
In Case of Difficulty
peared. Are all the settings correct? Can the problem be reproduced?
❒Are the connectors clean? See “Cleaning Connections for Acc urate Measure-
ments” on page 4-10 for more information.
❒Perform the following procedures:
1Make sure that the instrument is ready to acquire data by pressing Run.
2Find any signals on the channel inputs by pressing Autoscale.
3See if any signals are present at the channel inputs by pressing Trigger, Sweep,
Freerun.
4After viewing the signal, press triggered.
5Make sure Channel Display is on by pressing Channel, Display on off, on.
6Make sure the channel offset is adjusted so the waveform is not clipped off the
display.
7Make sure the mainframe identifies the plug-in module by pressing Utility, then
System config....
The calibration status of the plug-in modules is listed near the bottom of the
display, in the box labeled “Plug-ins”. If the model number of the plug-
in module is listed next to the appropriate slot number, then the mainframe
has identified the plug-in.
If “~known” is displayed instead of the model number of the plug-in
module, remove and reinsert the plug-in module in the same slot.
If “~known” is still displayed, the mainframe may need to have the latest
operating system firmware installed. Options 001 and 002 provide this
firmware on a 3.5 inch diskette. To load new firmware, follow the
instructions provided with this diskette. If you do not have the option al
diskette, contact your local Agilent Technologies servi ce office (refer to
“Agilent Technologies Service Offices” on p age 4-23).
If the mainframe firmware is current and the plug-in module is correctly
installed, then the memory contents of the plug-in module are corrupt.
Contact a qualified service department.