Programming Commands
VAVG Video Average
NOTE | There are a few differences in the way video averaging works in the N9061A | |||
| application compared to the legacy analyzers. See the following table for a | |||
| summary of these differences. |
|
| |
|
|
|
|
|
Table | Legacy Analyzers - Video Averaging Behavioral Differences | |||
|
|
|
|
|
Condition |
| Legacy Spectrum Analyzers | N9061A application |
|
|
|
|
|
|
All conditions. |
| 8566 and 8568 only - Original | Only displays the averaged trace. |
|
|
| trace is displayed in Trace C. | The averaged trace is displayed |
|
|
|
| in Trace A. |
|
|
|
|
| |
Average Count value set to 0. | Cannot be set to 0. | Video averaging is turned off if |
| |
|
|
| the Averaging Count is set to 0. |
|
|
|
|
| |
Change in Average Count | 8566 and 8568 only - | Resets the counter to zero and |
| |
setting to a higher value. | Continues counting from | starts the measurement again. |
| |
|
| where the previous value left |
|
|
|
| off. |
|
|
|
|
|
| |
Change in average counter | 8566 and 8568 only - Updates | If the new count value has not |
| |
setting to a lower value. | the screen annotation with the | been reached, continues until the |
| |
|
| lower averaging value. | new lower count has been |
|
|
|
| reached. |
|
|
|
| If the new, lower count value has |
|
|
|
| already been reached, the |
|
|
|
| analyzer will stop and wait until |
|
|
|
| you take a new sweep. |
|
|
|
|
|
|
Averaging turned on. |
| Sweep time remains | Sweep time changes due to the |
|
|
| unchanged. | selection of the sample detector. |
|
|
|
|
|
|
Change in resolution |
| 8566 and 8568 only - In single | Continues the measurement |
|
bandwidth, video bandwidth, | sweep mode, resets counter to | without resetting the counter. |
| |
sweep time, reference level | zero and starts the averaging |
|
| |
or attenuation. |
| again. |
|
|
|
|
|
| |
Change in center frequency | In single sweep mode, resets | In single sweep mode the |
| |
or span. |
| counter to zero and starts the |
| |
|
| averaging again. 8566 and | averages. Does not reset the |
|
|
| 8568 only - Also reset the | counter after changes in RBW, |
|
|
| counter after changes in RBW, | VBW, Sweep Time, Ref. Level |
|
|
| VBW, Sweep Time, Ref. Level | and Attenuation. |
|
|
| and Attenuation. |
|
|
|
|
|
|
|
|
|
|
|
|
NOTE | For 8566A/B, 8568A/B, the functions of the VAVG command are identical to the | |||
| KSG (page 193)or KSH command (page 195). | |||
|
|
|
|
|
346
