HP 33120A User Manual page 69

Chapter 3 Features and Functions
Frequency Modulation (FM)
Carrier Frequency
• Carrier frequency: 10 mHz to 15 MHz (100 kHz for triangle
and ramp). The default is 1 kHz.
• For arbitrary waveforms, the maximum carrier frequency depends on
the number of points specified in the waveform. The five built-in
arbitrary waveforms can be output at a maximum of 5 MHz.
Number of Arb Points
8 to 8,192 (8k)
8,193 to 12,287 (12k)
12,288 to 16,000
• The carrier frequency must always be greater than or equal to the
peak frequency deviation. If you attempt to set the carrier frequency
to a value less than the deviation, the function generator will auto-
matically adjust the carrier frequency to equal the present deviation.
From the front panel, "
frequency is adjusted. From the remote interface, a -221, "Settings
conflict" error is generated and the carrier frequency is adjusted.
• The sum of the carrier frequency and peak frequency deviation must
be less than or equal to the maximum frequency for the selected
function plus 100 kHz (15.1 MHz for sine and square, 200 kHz for
triangle and ramp, and 5.1 MHz for arbitrary waveforms). If you
attempt to set the carrier frequency to a value that is not valid,
the function generator will automatically adjust the carrier frequency
to equal the present deviation.
From the front panel, "
adjusted. From the remote interface, a -221, "Settings conflict" error
is generated and the deviation is adjusted.
• Front-Panel Operation: Press the
frequency for the selected function (the present amplitude and offset
voltage are used).
• Remote Interface Operation:
FREQuency {< frequency
78
Minimum Frequency Maximum Frequency
10 mHz
10 mHz
10 mHz
" is displayed and the carrier
MIN VALUE
" is displayed and the deviation is
MAX VALUE
key to select any valid
Freq
>|MINimum|MAXimum}
5 MHz
2.5 MHz
200 kHz