User`s guide

RIGOL Chapter 6 To Make Measurements
DS1000Z User’s Guide
6-50
9. Set the Vertical Scale
The unit of the vertical axis can be dB/dBm or Vrms which use logarithmic mode
and linear mode to display vertical amplitude respectively. If you need to display
the FFT frequency spectrum in a relatively larger dynamic range, dB/dBm is
recommended. Press Unit to select the desired unit and the default is Vrms.
10. Press Scale Reset, the instrument will adjust the vertical scale to the best value
according to the current configration automatically.
Tips
 You can use HORIZONTAL SCALE to adjust the center frequency
and horizontal scale at the same time.
 Signals with DC components or deviation would cause error or deviation of
the FFT waveform components. To reduce the DC components, set the
“Channel Coupling” to “AC”.
 To reduce the random noise and aliasing frequency components of
repetitive or single pulse, set the “Acquisition Mode” of the oscilloscope
to “Average”.
“AND” Operation
Perform logic operation on specified sources waveform point by point and display the
results. In operation, when the voltage value of the source channel is greater than
the threshold of the corresponding channel, it is regarded as logic “1”; otherwise
logic “0”.
The results of logic “AND” operation of two binary bits are as shown in the table
below.
Table 6-2 Logic “AND” Operation
A B A&&B
0 0 0
0 1 0
1 0 0
1 1 1