Bnc 645 User Manual download pdf (Page 102)

102

-221 Settings conflict; FM deviation exceeds max frequency

The sum of the carrier frequency and the deviation cannot exceed the

maximum frequency for the chosen function plus 100 kHz (20.1 MHz

for sine and square, 300 kHz for ramp, and 5.1 MHz for arbitrary

waveforms). If you set the carrier to a value that is not valid, the

waveform generator will adjust the deviation to the maximum value

allowed.

-221 Settings conflict; PWM deviation decreased due to pulse

parameters

The PWM deviation must follow the limitation concerning the pulse

width or duty cycle, edge time, and period (see Ch 4.11 for these

limitations), or the waveform generator will adjust it automatically.

-221 Settings conflict; frequency forced duty cycle change

In the square wave function, if you change the frequency to a value

that cannot produce the current duty cycle, the duty cycle will be

automatically adjusted to the maximum value for the new frequency.

-221 Settings conflict; marker forced into sweep span

The marker frequency must be a value between the start and the stop

frequency.

-221 Settings conflict; selected arb is missing, changing

selection to default

If you delete an arbitrary waveform after storing its instrument state,

you will lose the waveform data and not able to output the waveform.

The built-in exponential-rise wave is outputted instead.

-221 Settings conflict; offset changed due to amplitude

When the existing offset voltage does not conform the following

limitation: |Voffset| + Vpp / 2 ≤ Vmax, it is adjusted automatically to

the maximum dc voltage allowed with the specified amplitude.

-221 Settings conflict; amplitude changed due to offset

When the existing amplitude does not conform the following

limitation: |Voffset| + Vpp / 2 ≤ Vmax, it is adjusted automatically to

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Bnc 645 User Manual Page 102