Self-Testing
the 680XXB
The 680XXB 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 CW gen-
erator fails self-test, an error message is displayed
on the data display. Error messages and descrip-
tions are listed in the Operator Maintenance chap-
ter of this manual.
You can perform a self-test of the CW 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
Parameters
You can reset the 680XXB to the factory-selected de-
fault parameter values at any time during normal
operation. Table 3-1, page 3-14, lists the default pa-
rameters for all 680XXB models.
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 CW generator. (For information on
saving/recalling instrument setups, refer
to paragraph 3-13.)
To reset the CW generator, press
SYSTEM
. When
the System Menu (above) is displayed, press
Reset
.
LOCAL (FRONT
INSTRUMENT
PANEL) OPERATION
START-UP
During self-test with
RF OUTPUT
set to
ON
, the output
power level is set to 0 dBm. Always disconnect sensitive
equipment from the unit before performing self-test.
CAUTION
680XXB OM
3-15
Summary of Contents for 680 B Series
Page 5: ......
Page 11: ...Figure 1 1 Series 680XXB Synthesized CW Generator...
