TRL Test requirements list TRN Test Release Notice TSC Technical Screen TTM Time to market uJog HandlesThin Film Read and MR write elements offset UNC Uncorrectable data error Unrecoverable Error Host retries fail UTV UUT Unit Under Test VCM Voice coil motor WCT Writable Control Store (on host) Wedge Holds header and position data Window Block of counters enabled by a specific event x-skew Handled by surface format XTTF XYRATEX Company that provides SPT tester chamber and related SW y-skew Handled by servo offset during read (uJog) (HSDT) ZHS Zoned Head Switch
