Rigol DSA875 Manual de usuario descargar pdf (Pagina 140)

RIGOL Chapter 2 Front Panel Operation

User’s Guide for DSA800 Series

2-88

Figure 2-24 N dB BW measurement

Key Points:

 When the measurement starts, the analyzer will search for the two points

which are located at both sides of the current point with N dB fall or rise in

amplitude and display the frequency difference between the two points in the

active function area. "----" would be displayed if the search fails.

 You can use the numeric keys, knob or direction keys to modify the value of N,

for more details please refer to “Parameter Setting”.

Table 2-56 N dB BW parameter settings

Parameter Explanation

Default -3 dB

Range -100 dB to 100 dB

Unit

Knob Step

0.1 dB

Direction Key Step 1 dB

Function Off

Turn off the noise marker enabled or N dB BW measurement, but not the marker

itself.

N dB

Bandwidth

1 2 ... 135 136 137 138 139 140 141 142 143 144 145 ... 234 235

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Rigol DSA875 Manual de usuario Pagina 140