User manual

Table Of Contents
Part 6: IEEE 488.2 Command Reference
Short Long Subsystem What The Command or Query Does
DBIT
DD_BITCELL DDA Enters the bit cell time of the head signal.
DBST
DD_CTAF_BOOST DDA Sets the CTAF parameter, boost.
DBYT
DD_BYTE_OFFSET DDA Moves the head trace to show the specified byte.
DDFC
DD_CTAF_FC DDA
Sets the CTAF parameter, cut-off frequency fc.
DDFM
DD_FIND_METHOD DDA Selects the error-finding method.
DDR?
DDR? STATUS Reads, clears the Device Dependent Register (DDR).
DDSI
DD_SIGNAL_INPUT DDA Sends or reads out the association of a source with a par-
ticular Disk Drive signal.
DEF
DEFINE FUNCTION Specifies math expression for function evaluation.
DELF
DELETE_FILE STORAGE Deletes a file from the currently selected directory.
DENC
DD_ENCODING DDA Allows selection of the data-encoding ratio for locating
the bytes by byte offset.
DERI?
DD_ERR_INFO DDA Returns the measured value associated with the last
error position selected, and a code specifying what the
value contains.
DERR
DD_ERR_NUM DDA
Displays the section of waveform containing the
specified error number.
DFBIT
DD_FIND_BITCELL DDA Looks at the head signal and attempts to determine the
bit-cell time.
DFEN
DD_FIR_ENABLE DDA Enables the FIR filter for PRML channel emulation.
DFER
DD_FIND_ERROR DDA Commands the DDA to find errors.
DFGD
DD_CTAF_GROUP_DELAY DDA Sets the CTAF parameter, group delay.
DFIR
DD_FIR DDA Stores the setup that will be used if the FIR filter is
enabled for use in the channel emulation.
DHSC
DD_HEADSIGNAL_CHANNEL DDA Specifies the head signal source channel or memory for
channel emulation and servo analysis.
DIGS
DD_IGNORE_SAMPLES DDA Defines the number of samplesto be ignored at the
Read Gate signal end for channel emulation and analog
compare.
DISP
DISPLAY DISPLAY Controls the display screen.
DNER?
DD_NUM_ERRORS DDA Returns the number of errors found.
DOVL
DD_OVERLAP_REF DDA sets a state variable which determines re-establishing
the overlap of the head signal
DPA
DD_PES_ANALYSIS DDA Starts or aborts PES analysis.
DPD?
DD_PES_DATA DDA Reads out results of PES Analysis.
DPSD?
DD_PES_SUMMARY_DATA DDA Summarizes PES Analysis results.
DPSU
DD_PES_SETUP DDA Command sets parameters for PES Analysis. The query
responds with the current state of specified keywords.
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