Sony DDS-4 Product Description Manual page 165

7. DIAGNOSTICS
BOT: 0 - Space to EOD before beginning write test
1 - Rewind to BOT before beginning read or write test
RND: 0 - Randomizer is disabled during test
1 - Randomizer is enabled during test
WRT & RD control bits: The following table shows the operation of the Error Rate Test with different combinations of the
WRT & RD bits.
WRT
0
0
1
1
At the completion of the test, the tape will be positioned after the last group written or read and before EOD.
NLR: 0 - Drive Log will be initialized before the test
1 - Drive Log will not be initialized
7 - 10
Sony SDT-10000/SDT-11000 DDS Tape Drive
RD Action
0 Command rejected - invalid parameters
1 Read
Fast Search to initial position (conditional on loopcount)
Repeat until loopcount = 0
0 Write Setmark
Write test pattern
Write EOD at end of first pass
Fast search to initial position (conditional on loopcount)
Repeat until loopcount = 0
1 Write Setmark
Write test pattern
Write EOD at end of first pass
Fast search to initial position
Read
Fast Search to initial position (conditional on loopcount)
Repeat until loopcount = 0
Table 7-6: WRT & RD control bits