Chapter 4. Controls, Indicators, and Operation of 10/20-GB DLT Cartridge Tape Drive
Order Number: EK–SM1TB–UG. E01
4–7
Table 4–4 Tape Drive LED Status
Status
W
RITE
P
ROTECTED
LED
T
APE IN
U
SE
LED
No tape loaded.
Off
Off
Tape loaded, write en-
abled.
Off
Yellow
Tape loaded, write-pro-
tected.
Orange
Yellow
No SCSI/drive activity.
Off
†
Yellow (steady)
SCSI/drive activity.
Off
†
Blinks on and off to track activity
Load sequence.
Off
†
Blinks yellow @
≈
1-second interval (25%
on).
Yellow continuously when done.
Indicates drive activity.
Unload sequence
Off
†
, goes off.
Flashes yellow @
≈
1-second interval
(25% on).
Goes off when done.
Indicates drive activity.
Reset sequence
Orange
Off
†
Yellow, blinking.
Normal indications.
Power on self test
(POST)
Flashes orange @ 2 Hz for
first few seconds, then goes
off for remainder of power-
up test sequence.
Double-flashes yellow @
≈
1-second
interval for length of test.
Normal activity indications when test
complete.
Test complete, no fail-
ure.
Resume normal operation,
off
†
.
Test failure, drive fault.
Flashes orange @ 2 Hz.
Double-flashes yellow @
≈
1-second
interval.
†
If cassette is write-protected, orange W
RITE
-P
ROTECTED
LED will light.
_______________________________________________________________________________________________________________________________________
4.5
CompacType III DLT Tape Cassette
The tape cassette contains a write-protect slide-bar switch (Figure 4–2) which is the same
color as the body of the tape cassette but exposes an orange area in a rectangular aperture
above the arrow on the left side of that switch when in the write-protect position. To "write-
protect" the tape, slide the tab to the left before loading the tape in the drive or before starting
any write operations. To "write-enable" the tape, slide the switch to the right before loading
the tape in the drive or before any write operations.
4.6
Using and Handling CompacTape III Tape Cassettes
The data tape cartridge is a 4-1/8-inch, gray, plastic cartridge containing 1200 feet of 1/2-
inch magnetic metal particle tape. The medium is a half-inch cartridge or ANSI-compatible
equivalent. It is written and read using the interchange format proposed in the applicable
pending ANSI X3B5 project.
