Front-Panel Menu Operation
81150A and 81160A User’s Guide 67
2.25 Outputting an FSK Waveform
You can configure the 81150A / 81160A to “shift” its output frequency
between two preset values using FSK modulation. The rate at which the
output shifts between the two frequencies (called the “carrier frequency”
and the “hop frequency”) is determined by the internal rate generator or the
signal level on the rear-panel Modulation In connector. (There is one
Modulation In connector for each channel.)
For this example, you will set the “carrier” frequency to 3 kHz and the “hop”
frequency to 500 Hz, with an FSK rate of 100 Hz.
Select the function,
frequency, and
amplitude of the
carrier
Press and then press the Frequency, Ampl, and Offset softkeys to
configure the carrier waveform.
For this example, select a 3 kHz sine wave with an amplitude of 5 Vpp.
Press and then select FSK using the Modulation Type softkey.
Notice that a status message FSK, Internal is shown in the status line. This
message is applicable for all waveforms.