Self-Testing
the 681XXB
The 681XXB firmware includes internal diagnostics
that self-test the instrument. These self-test diag-
nostics perform a brief go/no-go test of most of the
PCBs and other internal assemblies. If the sweep
generator fails self-test, an error message is dis-
played on the data display. Error messages and de-
scriptions are listed in the Operator Maintenance
chapter of this manual.
You can perform a self-test of the sweep generator
at any time during normal operation. To perform a
self-test from any menu, press
SYSTEM
. Then,
when the System Menu (shown below) is displayed,
press
Selftest
.
Resetting to
Default Pa-
rameters
You can reset the 681XXB to the factory-selected de-
fault parameter values at any time during normal
operation. The default parameters are shown in Ta-
ble 3-1 on the following page.
NOTE
Resetting the instrument clears the setup
presently in place. If these parameter val-
ues are needed for future testing, save
them as a stored setup before resetting
the sweep generator.
To reset the sweep generator, press
SYSTEM
.
When the System Menu (shown above) is displayed,
press
Reset
.
LOCAL (FRONT
INSTRUMENT
PANEL) OPERATION
START-UP
681XXB OM
3-13