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Using Paragon-X, a wander transfer measurement can be made using either a single frequency or a table of frequencies.

For a single frequency:The , the frequency and pk-pk amplitude are specified in the UI. Clicking Generate Wander starts the generation of this tone; the measurement then runs for 10 seconds. The pk-pk output amplitude is measured across the full 10 second capture. The gain is then calculated and the result presented on the UI.

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These limits are made optional so as to preserve backwards compatibility with previous software versions - the Lower Limit is disabled by default.

Recovery Time

Some DUTs will have a transient response caused by the The frequency and amplitude changes between steps in the table will cause a short transient in the DUT output due to the action of the internal filter. This is a normal response of a filter to the change in stimulus, but it will result in incorrect pk-pk amplitude measurements and so should be ignored when making measurements. Therefore a “recovery time” is used to ignore the output during the first few seconds after each change in frequency.

In X.10.40, the recovery times have been added as shown at different frequencies are defined in the table below:

For example, for any frequency less than 4Hz, the first 50 seconds of the measurement will be ignored and the pk-pk amplitude will be calculated over the remaining capture period (as defined by the Dwell Time)

Since each step has a recovery time, this also changes the minimum allowed Dwell Time for a step.

Note: The Notes:

• Frequencies above 15Hz are not necessary for G.8262 testing. The information above is included here for reference purposes only.

• The restriction on recovery time based on frequency is due to an internal hardware constraint in Paragon-X

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