5 Key Reference
Sweep Time
| Selects the length of time the analyzer takes to | |
| tune across the displayed frequency span (or, in | |
| zero span, the time the analyzer takes to sweep the | |
| full screen) using the knob, the arrow keys, or | |
| numeric keypad. | |
| Reducing the sweep time increases the sweep rate. | |
N O T E | ||
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| Key access: [BW/SWP] | |
| In | |
| When the sweep time is auto- coupled, the analyzer | |
| selects the optimum (shortest) sweep time ranging | |
| from 10 ms to 1000 s for the current settings. This | |
| selection process is influenced by three factors: | |
| • Frequency Span | |
| • The selected Resolution Bandwidth | |
| • The selected Video Bandwidth | |
| Note that changing one of the three factors above | |
| changes sweep time. The sweep time is in direct | |
| ratio to frequency span and is in reverse ratio to | |
| the selected resolution bandwidth and video | |
| bandwidth when auto- coupled. | |
| With sweep time set to a value less than the minimum | |
C ACUATUI O- N | ||
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| appears in the active function block and the sweep time is | |
| automatically converted to the minimum | |
| value. | |
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| In zero span: | |
| The auto- coupled status is invalid in zero span. | |
| You can only set the sweep time manually. The | |
| sweep time ranges from 6 ∝s to 200 s in zero span. |
76 | N9340A User’s Guide |