Reference Guide

Chapter 4 SCSI Commands
SEND DIAGNOSTIC Command (1Dh)
DLT-S4 Interface Reference Guide 323
SEND DIAGNOSTIC Command (1Dh) 4
The SEND DIAGNOSTIC command directs the DLT-S4 tape drive to
perform its self-diagnostic tests. Two levels of drive-resident diagnostic
tests are available: the Level 1 Electronics Test and the Level 2 Write /
Read Functionality Test.
Figure 163 SEND
DIAGNOSTIC Command
Descriptor Block
— Data
Format
Bit
7 6 5 4 3 2 1 0
Byte
0 Operation Code (1Dh)
1 Self-Test Code PF (0) Reserved Selftst DevOfl UnitOfl
2 Reserved
3 — 4
(MSB)
Parameter List Length
(LSB)
5 Control