User's Guide

Chapter 3 Emulated DLT7000 SCSI Commands
Send Diagnostic (1Dh)
258 Quantum DX-Series Software Interface Guide
Send Diagnostic (1Dh) 3
The SEND DIAGNOSTIC command directs the tape drive to perform its
self-diagnostic tests.
Table 208 SEND
DIAGNOSTIC
Command Descriptor
Block - Data Format
Bit/Byte 7 6 5 4 3 2 1 0
0
1
2
3-4
5
Table 209 SEND
DIAGNOSTIC
Command Data - Field
Descriptions
Operation Code (1Dh)
Logical Unit Number PF (0) Rsv’d Selftst DevOfl UnitOfl
Reserved
MSB
Parameter list
LSB
Unused Reserved
Flag (0) Link (0)
Field Name Description
PF Page Format. Not supported; must be 0.
Selftst Self Test. This bit is used in conjunction with
DevOfl and UnitOfl to specify the type of testing to
be done. An explanation is provided in the
following paragraphs.
DevOfl Device Offline. This bit is used in conjunction with
Selftst and UnitOfl to specify the type of testing to
be done. An explanation is provided in the
following paragraphs.
UnitOfl Unit Offline. This bit is used in conjunction with
Selftst and DevOfl to specify the type of testing to
be done. An explanation is provided in the
following paragraphs.