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3 Short-Range Comms & IoT Mode

3.7 ACP Measurement

Pressing Clear/Write stops the current sweep and initiates a new one, so Trace

Average, Max Hold and Min Hold data may be interrupted in mid-sweep when

Clear/Write is pressed, and therefore may not accurately reflect the displayed

count. Therefore, when Clear/Write is pressed for one trace, Trace Average, Max

Hold and Min Hold must restart for all traces.

When in Clear/Write, if a measurement-related instrument setting is changed (that

is, one which requires new data to be taken, like Center Frequency or Attenuation), a

new sweep is initiated but the trace is not cleared.

Trace Average

The instrument maintains and displays an average trace, which represents the

cumulative average on a point-by-point basis of the new trace data and previous

averaged trace data.

Pressing Trace Average (for the selected trace), or sending :TRAC:TYPE AVER (for

the specified trace), sets the trace type to Trace Average, clears the trace, initiates a

new sweep, and restarts the Average sequence.

Details of the count limiting behavior and the averaging calculations may be found

under Avg|Hold Number and Average Type under Meas Setup.

When in Trace Average, if a measurement-related instrument setting is changed

(that is, one which requires new data to be taken, like Center Frequency or

Attenuation), the average restarts and a new sweep is initiated but the trace is not

cleared.

Restarting the average means:

–

The average/hold count k is set to 1, so that the next time the average trace is

displayed it simply represents one trace of new data

–

A new sweep is initiated

–

Once the new sweep starts, the trace is overwritten with current trace data as

the first trace of the new average

Remember that restarting averaging also restarts Max Hold and Min Hold, as there

is only one count for Trace Average and Hold.

Max Hold

The instrument maintains and displays a max hold trace, which represents the

maximum data value on a point-by-point basis of the new trace data and previous

trace data. Details of the count limiting behavior may be found under Avg|Hold

Number under Meas Setup.

992 Short Range Comms & IoT Mode User's &Programmer's Reference

Keysight x-series Instruction Manual

Other manuals for Keysight x-series