Amplitude Modulation (AM) and Frequency Modulation (FM)
Carrier Waveform Shape
l AM or FM carrier shape: Sine (default), Square, Ramp, Pulse, Triangle, Noise, PRBS, or Arbitrary waveform. You can-
not use DC as the carrier waveform.
l For FM, the carrier frequency must always be greater than or equal to the frequency deviation. Attempting to set a
deviation greater than the carrier frequency will cause the instrument to set the deviation equal to the carrier
frequency.
l The carrier frequency plus the deviation cannot exceed the selected function's maximum frequency plus 100 kHz.
If you attempt to set the deviation to an invalid value, the instrument adjusts it to the maximum value allowed
with the present carrier frequency. The remote interface also generates a "Data out of range" error.
l Front Panel:
Then select a waveform shape.
l SCPI:
FUNCtion {SINusoid|SQU|PULS|RAMP|TRI|ARB|NOISe|PRBS}
The APPLy command configures a waveform with one command.
Carrier Frequency
The maximum carrier frequency varies by function, as shown below. The default is 1 kHz for all functions. Arbitrary
waveform "frequency" is also set using the FUNCtion:ARBitrary:SRATe command.
Function Minimum Frequency Maximum Frequency
Sine 1 µHz 30 MHz
Square 1 µHz 30 MHz
Ramp 1 µHz 200 kHz
Pulse 1 µHz 30 MHz
PRBS 1 mBPS 50 mPBS
Noise BW 1 mHz 30 MHz
Arbitrary 1 µSa/s 250 MSa/s
l Front Panel:
72 Agilent 33500 Series Operating and Service Guide
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