Calibration of high-density servo pattern detector parameters

A computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause the processor to:

• cause, by the processor, a servo reader to move laterally in a first direction over a high-density servo pattern on a moving magnetic tape, wherein the first direction is perpendicular to a longitudinal axis of the magnetic tape, wherein the high-density servo pattern includes a plurality of high-density servo tracks, the servo tracks including at least two patterns written at different frequencies to produce different periodic waveforms during readback;
• receive, by the processor, a readback signal from the servo reader as the servo reader moves laterally in the first direction;
• use, by the processor, amplitudes of the readback signal to determine a maximum energy value of each of the at least two periodic waveforms;
• and
• use, by the processor, the maximum energy values to set a gain parameter for each of the respective periodic waveforms.

A tape drive, comprising:

• a controller comprising logic integrated with and/or executable by the controller to cause the controller to:
• cause a servo reader to move laterally in a first direction over a high-density servo pattern on a moving magnetic tape, wherein the first direction is perpendicular to a longitudinal axis of the magnetic tape, wherein the high-density servo pattern includes a plurality of high-density servo tracks, the servo tracks including at least two patterns written at different frequencies to produce different periodic waveforms during readback;
• receive a readback signal from the servo reader as the servo reader moves laterally in the first direction;
• use amplitudes of the readback signal to determine a maximum energy value of each of the at least two periodic waveforms;
• and
• use the maximum energy values to set a gain parameter for each of the respective periodic waveforms.