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 4-28

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

X-Series analyzer uses all stored

 

 

 

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).

 

 

 

 

 

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Page 346
Image 346
Agilent Technologies N9030a manual Legacy Analyzers Video Averaging Behavioral Differences, only Original

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