Filter
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PN 8500-0150, Rev. A, May 2005 23
Operating Manual
Operation
The srr.rrrr is a number from -99.9999 to +99.9999 microseconds per second. The number is
frequency change from DAC = 00000 to 65535 of the unit. This number is used in the
discipline algorithm to help compensate for oscillators with different frequency
Response Format:
Design Verify On/Off
Command Format:
Description:
Determines whether filtered rate or filter offset is returned in a status request. When x = 0, the
extra data is not included. When x = 1, the extra data is included.
The response to the status command is changed to the following:
Frr.rrrrrr - Filtered rate in microseconds; rr.rrrrrr is the an average frequency rate error
calculated internally by the unit. This is one of the values used by the program to determine
the dynamic gain.
Oyyyyyy.yyy - Filtered offset in microseconds; yyyyyy.yyy is the an average time error
calculated internally by the unit. This is one of the values used by the program to determine
the dynamic gain.
Response Format:
Note: It is assumed that the DAC output and oscillator control are linear. If not, then the
oscillator control range should be extrapolated from a subset of the control curve that is
near zero frequency error.