User manual

Chapter 2 Front Panel Operation RIGOL
User’s Guide for DSA700 Series
2-37
automatically adjusted to smaller values.
Select Chan Pwr and press Meas Setup to set the corresponding
parameters.
4. OBW
Integrate the power within the whole span and calculate the bandwidth
occupied by this power according to the specified power ratio. The OBW
function also indicates the difference (namely "Transmit Freq Error") between
the center frequency of the channel under measurement and the center
frequency of the analyzer.
Select OBW and press Meas Setup to set the corresponding parameters.
5. EBW
Measure the bandwidth between two points on the signal which are X dB
below the highest point within the span.
Select EBW and press Meas Setup to set the corresponding parameters.
6. C/N Ratio
Measure the powers of the carrier and noise with the specified bandwidth as
well as their power ratio.
Select C/N Ratio and press Meas Setup to set the corresponding
parameters.
7. Harmo Dist
Measure the power of each order of harmonic and THD (total harmonic
distortion) of the carrier. The highest order of harmonic available is 10 and the
fundamental wave amplitude must be greater than -50 dBm; or else the
measurement will be invalid.
Select Harmo Dist and press Meas Setup to set the corresponding
parameters.
8. TOI
Measure the parameters of the TOI production of two signals with the same
amplitude and similar frequency. Those parameters include the frequencies
and amplitudes of the Base Lower, Base Upper, 3rd Order Lower and 3rd
Order Upper signal, as well as the Intercepts of both the Base Lower and Base
Upper.