FFOFF


Fractional Frequency Offset (FFOFF) has averaging time intervals of 3, 12, 48, 192, 768, and 3072 seconds. The functions and settings for each time interval are described in the following table.

Item

Description

Threshold

This value defines a boundary for the performance measurement interval and can be set from 0 ppm to 7,300,000 ppm.

 Use for Qualifying

Indicates if the time interval is enabled (Y) or disabled (N) as a criteria for qualifying the input.

Report Crossings

Indicates if the threshold setting is used (Y) or if it is not used (N) to cause automatic reporting of the measurement when it crosses the threshold in either direction.

Include in Auto-Upload

Indicates if the automatic display of performance data is allowed (Y) or inhibited (N) for a particular input channel.

Good Meas Required

Indicates the number of good measurements (1 through 15) that must occur following a bad measurement before an input signal can be qualified and for the event to be cleared.

See Also:

SPREAD

TDEV

MRTIE

LMRTIE

TIE

WAND