RIGOL DSA875 - Manual (Page 56)

RIGOL Chapter 2 Front Panel Operation
User’s Guide for DSA800 Series 2-4
span would affect other system parameters. For more details, please refer to
“Span”.
 In Zero Span mode, the start frequency, stop frequency and center frequency
are always the same. If one is changed, the others are updated to match.
 You can modify this parameter using the numeric keys, knob or direction keys.
Refer to “Parameter Setting” for more details.
Table 2-2 Start Frequency
Parameter Explanation
Default 0 GHz
Range* 0 Hz to 7.5 GHz
Unit GHz, MHz, kHz, Hz
Knob Step Span > 0, step = Span/200
Span = 0, step = RBW/100
Min = 1 Hz
Direction Key Step CF step
Note: *The range is from 0 Hz to (7.5 GHz-100 Hz) in non-zero span.
Stop Freq
Set the stop frequency of the current channel. Press this key to switch to start/stop
frequency input mode. The start and stop frequencies are displayed at the lower
left and right sides of the grid respectively.
Key Points:
 The span and center frequency vary with the stop frequency. The change of
span would affect other system parameters. For more details, please refer to
“Span”.
 In Zero Span mode, the start frequency, stop frequency and center frequency
are always the same. If one is changed, the others are updated to match.
 You can modify this parameter using the numeric keys, knob or direction keys.
For more details, please refer to “Parameter Setting”.