Filter
Top Products
Features and Functions 2
U2761A User’s Guide 57
Remote Interface Operation
FUNCtion {SINusoid|SQUare|RAMP|USER}
You can also use the APPLy command to select the function,
frequency, amplitude, and offset.
Carrier Frequency
The maximum carrier frequency depends on the selected
function as shown below. The default is 1 kHz for all
functions.
The carrier frequency must always be greater than or equal
to the frequency deviation plus 1 μHz. If you attempt to set
the deviation to a value plus 1 μHz greater than the carrier
frequency (with FM enabled), the U2761A will automatically
adjusts the deviation to the maximum value allowed with the
present carrier frequency.
The sum of the carrier frequency and deviation must be less
than or equal to the maximum frequency for the selected
function (20 MHz for Sine and Square, 200 kHz for Ramp
and Arbitrary waveforms). If you attempt to set the
deviation to a value that is not valid, the U2761A will
automatically adjusts it to the maximum value allowed with
the present carrier frequency.
Table 2-4 Carrier frequency for FM
Function Minimum frequency Maximum frequency
Sine 1 μHz 20 MHz
Square 1 μHz 20 MHz
Ramp, Triangle 1 μHz 200 kHz
Arbitrary 1 μHz 200 kHz