ADVANTEST R3131

R3131 Spectrum Analyzer Operation Manual
3.4 Setting Values
3-58 Aug 28/98
3.4.2 Set Values for RBW, VBW and SWP Time
When set to AUTO, the values for RBW, VBW and SWP Time are as listed in the table below.
Table 3-3 Values for RBW, VBW and SWP Time (using AUTO)
Frequency span RBW VBW SWP Time (sec)
60MHz ≤ Span 1MHz 1MHz W
hen RBW is set to 3kHz or more:
RBW
≤
VBW
SWP = SPAN/(RBW
×
RBW
×
0.5)
RBW > VBW
SWP = SPAN/(RBW
×
VBW
×
0.5)
When RBW is set to 1 kHz:
SPAN <101kHz
SWP = 500msec
SPAN
≥
101kHz
SWP = two times the value obtained
by usin
g the formula above.
20MHz ≤ Span < 60MHz 300kHz 100kHz
6MHz ≤ Span < 20MHz 100kHz 100kHz
2MHz ≤ Span < 6MHz 30kHz 10kHz
300kHz ≤ Span < 2MHz 10kHz 10kHz
100kHz ≤ Span < 300kHz 3kHz 1kHz
50kHz ≤ Span < 100kHz 1kHz 1kHz