When you set mask values for center frequency and tuner gain, the block initially performs some rudimentary checks that the values are scalar and real. If your values pass those checks, you can still provide values that are out of range for the RTL-SDR radio. In that case, the hardware makes a best effort to set the requested value, and reports the actual value in the Device value column of the block mask.
The System object™ properties always shows the requested values for center frequency, sample rate, and frequency correction. However, due to quantization or range issues, the actual values can differ from your desired values.
h.CenterFrequency displays the
requested center frequency set by you. To see the actual center frequency
set at the radio, call the info method,
r = info(h):
the actual center frequency. The System object sends the requested
values to the radio and reads the actual values back when either the
is called or when
step() is called.
|Parameter to Set||Actual Value|