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Agilent E1441A SCPI Command Reference 97
Chapter 3
• You can substitute "MINimum", "MAXimum" or "DEFault" in place of a
specific value for any of the above three parameters. MIN selects the lowest
value, MAX selects the highest value and DEF selects the default setting.
Output Frequency Minimum frequency is the same for all functions. Maximum frequency is dependent
on the function selected as shown in the following table.
.
• Possible Output Frequency Conflict with a Function Change: The output
frequency is automatically adjusted if you change the function from SINE or
SQUARE (MAX frequency = 15 MHz) to RAMP, TRIANGLE or a Built-In
Arb, if the current frequency is greater than that of the maximum frequency of
the new function. For example, the maximum frequency of a sine wave is 15
MHz while the maximum frequency for a triangle wave is 100 kHz. If the
current output is a sine wave at 1 MHz and you change the function to triangle
wave which cannot output at 1 MHz, the function generator automatically
adjusts the output to the upper frequency limit for a triangle wave (100 kHz).
This function change will also generate a -221 "Settings conflict" error.
• Possible Conflict with Duty Cycle (square wave only): For output
frequencies above 5 MHz, the duty cycle is limited to values between 40% and
60% (below 5 MHz, the range is 20% to 80%). The duty cycle is
V
offset
V
pp
2
--------
+ V
max
≤ and V
offset
2V
pp
≤
Function Minimum
Frequency
Maximum Frequency
Sine 100 µHz 15 MHz
Square 100 µHz 15 MHz
Built-In Arbs
a
a.There are five built-in arbitrary waveforms stored in
non-volatile memory: sinc, negative ramp,
exponential rise, exponential fall and cardiac.
These waveforms are shown on page 48. The five
built-in arbitrary waveforms can be output at a
maximum of 5 MHz.
100 µHz 200 kHz, 2.5 MHz or 5 MHz
b
b. Maximum frequency for arbitrary waveforms you generate
depends on the number of points
specified in the waveform. The maximum output frequency
decreases as you specify more points
in the waveform (see below)
.
Ramp 100 µHz 100 kHz
Triangle 100 µHz 100 kHz
Number of Arb Points Minimum Frequency Maximum Frequency
8 to 8,192 (8k) 100 µHz 5 MHz
8,193 to 12,287 (12k) 100 µHz 2.5 MHz
12,288 to 16,000 100 µHz 200 kHz