GW Instek GSP-930 User Manual - Manual (Page 63)

BASIC OPERATION
61
Bandwidth/Average Settings
BW/Avg key sets the resolution bandwidth (RBW), video
bandwidth (VBW) and averaging functions. The resolution, sweep
time, and averaging are in a trade-off relationship, so configuration
should be done with care.
Resolution Bandwidth Setting (RBW)
Description RBW (Resolution Bandwidth) defines the width
of the IF (intermediate frequency) filter that is
used to separate signal peaks from one another.
The narrower the RBW, the greater the
capability to separate signals at close
frequencies. But it also makes the sweep time
longer under specific frequency spans (the
display is updated less frequently).
Operation 1. Press
BW/Avg
> RBW[F1] and set the RBW to
Auto or Man.
2. Set the resolution bandwidth and unit for Man
mode.
Mode:
Frequency Range(3dB):
Frequency Range(6dB): Auto, Man
10Hz~3kHz (1-3-10 step)
10kHz~1MHz (10% step)
200Hz, 9kHz, 120kHz
Display Icon The BW icon is displayed at the bottom of
the screen when the RBW is in Man mode.
Note
If the RBW settings have an asterisk (*), it
indicates that the -6dB filters are used.