Adaptive Sweep - HP 3580A Operating And Service Manual

Section III
GENERAL OPERATING INFORMATION
Model 3580A
3-147. Adaptive Sweep.
3-148. One of the inconveniences associated with low
frequency spectrum analyzers is the extremely slow sweep
rates required when using narrow bandwidths. For example,
to sweep over a 200 Hz spectrum using a 1 Hz bandwidth,
the optimum sweep time setting is 50 seconds per division.
Tiris makes the overall measurement time 500 seconds or
about 8 minutes. If a sweep time setting of 200 seconds per
division is used, the total measurement time is 2,000
seconds or 33 minutes.
Table 3-5. Optimum Sweep Time Settings.
BANDWIDTH FREQ SPECTRUM OPTIMUM SWP. TIME OPTIMUM SWP. TIME OPTIMUM SWP. TIME
SETTING SPAN/DIV WIDTH (SMOOTHING MIN.) (SMOOTHING MED.) (SMOOTHING MAX.)
1 Hz 5 Hz 50 Hz 10 sec. 100 sec.
------
1 Hz 10 Hz 100 Hz 20 sec. 200 sec.
------
1 Hz 20 Hz 200 Hz 50 sec.
------
------
1 Hz 50 Hz 500 Hz 100 sec.
------
------
1 Hz 0.1 kHz 1 kHz 200 sec.*
------ ------
3 Hz 5 Hz 50 Hz 1 sec. 10 sec. 100 sec.
3 Hz 10 Hz 100 Hz
2 sec.
20 sec. 200 sec.
3 Hz 20 Hz 200 Hz
5 sec. 50 sec.
------
3 Hz 50 Hz 500 Hz 10 sec. 100 sec.
------
3 Hz 0.1 kHz 1 kHz 20 sec. 200 sec.*
------
3 Hz 0.2 kHz 2 kHz 50 sec.
------ ------
3 Hz 0.5 kHz 5 kHz 100 sec.
------ ------
3 Hz 1 kHz 10 kHz 200 sec.*
------
------
10 Hz 5 Hz 50 Hz 0.1 sec. 1 sec. 10 sec.
10 Hz 10 Hz 100 Hz 0.2 sec. 2 sec. 20 sec.
10 Hz
20 Hz 200 Hz 0.5 sec. 5 sec. 50 sec.
10 Hz 50 Hz 500 Hz 1 sec. 10 sec. 100 sec.
10 Hz 0.1 kHz 1 kHz 2 sec. 20 sec. 200 sec.*
10 Hz
0.2 kHz 2 kHz 5 sec. 50 sec.
------
10 Hz
0.5 kHz 5 kHz 10 sec. 100 sec.
------
10 Hz
1 kHz 10 kHz 20 sec. 200 sec.*
------
10 Hz 2 kHz 20 kHz 50 sec.
------
------
10 Hz 5 kHz 50 kHz 100 sec.
------ ------
30 Hz
5 Hz
50 Hz
0.01 sec.** 0.1 sec. 1 sec.
30 Hz 10 Hz 100 Hz 0.02 sec. 0.2 sec. 2 sec.
30 Hz
20 Hz 200 Hz 0.05 sec. 0.5 sec. 5 sec.
30 Hz 50 Hz 500 Hz 0.1 sec. 1 sec. 10 sec.
30 Hz 0.1 kHz 1 kHz 0.2 sec. 2 sec. 20 sec.
30 Hz 0.2 kHz 2 kHz
0.5 sec.
5 sec. 50 sec.
30 Hz 0.5 kHz 5 kHz 1 sec. 10 sec. 100 sec.
30 Hz
1 kHz 10 kHz 2 sec. 20 sec. 200 sec.*
30 Hz 2 kHz 20 kHz 5 sec. 50 sec.
------
30 Hz 5 kHz 50 kHz 10 sec.
100 sec.
------
100 Hz 5 Hz 50 Hz 0.01 sec.** 0.01 sec.** 0.1 sec.
100 Hz 10 Hz 10d Hz
0.01 sec.** 0.02 sec. 0.2 sec.
100 Hz 20 Hz
200 Hz 0.01 sec.*.* 0.05 sec. 0.5 sec.
100 Hz
50 Hz 500 Hz 0.01 sec.** 0.1 sec. 0.5 sec.
100 Hz 0.1 kHz
1
k~z
0.02 sec. 0.2 sec. 1 sec.
100 Hz
0.2 kHz 2 k z 0.05 sec. 0.5 sec. 2 sec.
100 Hz
0.5 kHz 5 kHz
O.t
sec. 1 sec. 10 sec.
100 Hz
1 kHz 10 l<Hz 0.2 sec.
2 sec. 20 sec.
100 Hz 2 kHz 20 kHz
0.5 sec. 5 sec. 50 sec.
100 Hz 5 kHz
50 kHz 1 sec. 10 sec. 100 sec.
300 Hz
5 Hz 50 Hz 0.01 sec.** 0.01 sec.** 0.01 sec.**
300 Hz 10 Hz 100 Hz 0.01 sec.**
0.01 sec.** 0.02 sec.
300 Hz 20 Hz 200 Hz
0.01 sec.** 0.01 sec.** 0.05 sec.
300 Hz 50 Hz
500 Hz 0.01 sec.** 0.01 sec.** 0.1 sec.
300 Hz 0.1 kHz 1 kHz 0.01 sec.**
0.02 sec. 0.2 sec.
300 Hz 0.2 kHz 2 kHz 0.01 sec.** 0.05 sec.
0.5 sec.
300 Hz 0.5 kHz 5 kHz
0.01 sec.** 0.1 sec. 1 sec.
300 Hz 1 kHz 10 kHz
0.02 sec. 0.2 sec. 2 sec.
300 Hz 2 kHz 20kHz 0.05 sec. 0.5 sec. 5 sec.
300 Hz 5 kHz 50 kHz 0.1 sec. 1 sec. 10 sec.
*Slowest SWEEP TIME Available.
**Fastest SWEEP TIME Available.
3-20