User manual

3390-900-01 Rev. C / January 2009 Return to Section Topics B-5
Model 3390 Arbitrary Waveform Generator User’s Manual Appendix B: Error Messages
-221 Settings conflict; not able to
burst dc, burst turned off
The waveform generator cannot generate a burst
using the DC voltage function.
-221 Settings conflict; not able to
sweep noise, sweep turned off
The waveform generator cannot generate a sweep
using the noise function.
-221 Settings conflict; pulse width
decreased due to period
With edge time at its minimum, the waveform
generator has adjusted the pulse width to
accommodate the specified period.
-221 Settings conflict; pulse duty
cycle decreased due to period
With edge time at its minimum, the instrument has
adjusted pulse duty cycle to accommodate the
specified period.
-221 Settings conflict; edge time
decreased due to period
The edge time has been decreased to accommodate
the period.
-221 Settings conflict; pulse width
increased due to large period
The instrument has adjusted the pulse width to
accommodate the current period.
-221 Settings conflict; edge time
decreased due to pulse width
The waveform generator adjusts the edge time, then
the pulse width or duty cycle, then the period (if
needed) to accommodate the following: Edge Time
≤ 0.625 x Pulse Width. In this case, the edge time is
decreased to accommodate the specified pulse
width.
-221 Settings conflict; edge time
decreased due to pulse duty cycle
The waveform generator adjusts the edge time, then
the pulse width or duty cycle, then the period (if
needed) to accommodate the following: Edge Time
≤ 0.625 x Period x Duty Cycle. In this case, the
edge time is decreased to accommodate the pulse
duty cycle.
-221 Settings conflict; amplitude
changed due to function
When the new function chosen has smaller
maximum amplitude, the waveform generator will
automatically adjust the amplitude from the old value
to the new, smaller maximum value. This may occur
when the output units are V RMS or dBm because of
the differences in crest factor for the various output
functions.
-221 Settings conflict; offset
changed on exit from dc function
In the DC voltage function, the voltage level is
controlled by adjusting the offset voltage (the current
amplitude is ignored). When you select a different
function, the instrument will adjust the offset voltage
as needed to be compatible with the current
amplitude setting.
-221 Settings conflict; FM
deviation cannot exceed carrier
The frequency deviation cannot exceed the carrier
frequency. The waveform generator will adjust the
deviation to a maximum allowed value.
-221 Settings conflict; FM
deviation exceeds max frequency
The sum of frequency deviation and the carrier
frequency cannot be greater than the maximum
frequency of the selected carrier waveform plus 100
kHz; (50.1 MHz for sine; 25.1 MHz for square; 300
kHz for ramp; and 10.1 MHz for arbitrary
waveforms). If you set the carrier to a value that is
not valid, the instrument will adjust the deviation to
the maximum value allowed.
Table B-2:
Execution errors
Error code Description