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Chapter 3 Features and Functions
Output Configuration
3
Output Frequency
As shown below, the output frequency range depends on the function
currently selected. The default frequency is 1 kHz for all functions.
• Function Limitations: If you change to a function whose maximum
frequency is less than that of the current function, the frequency is
adjusted to the maximum value for the new function. For example,
if you are currently outputting a 20 MHz sine wave and then change
to the ramp function, the function generator will automatically
adjust
the output frequency to 200 kHz (the upper limit for ramps).
• Burst Limitation: For internally-triggered bursts, the minimum
frequency is 2.001 mHz. For sine and square waveforms, frequencies
above 6 MHz are allowed only with an “infinite” burst count.
•
Duty Cycle Limitations
: For square waveforms, the function generato
r
may not be able to use the full range of duty cycle values at higher
frequencies as shown below.
20% to 80% (frequency <
10 MHz)
40% to 60% (frequency > 10 MHz)
If you change to a frequency that cannot produce the current duty cycle
,
the duty cycle is automatically adjusted to the maximum value for the
new frequency. For example, if you currently have the duty cycle set
to 70% and then change the frequency to 12 MHz, the function
generator will automatically adjust the duty cycle to 60% (the upper
limit for this frequency).
Function Minimum Frequency Maximum Frequency
Sine
Square
Ramp
Pulse
Noise, DC
Arbs
1 µHz
1 µHz
1 µHz
500 µHz
Not Applicable
1 µHz
20 MHz
20 MHz
200 kHz
5 MHz
Not Applicable
6 MHz
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