Figure 1. Typical; Figure 2. Typical Power-On Sequence - Seagate ST251R Product Manual

FIGURE
1:
Typical
+
12
VDC Start-Up Current Profile
1,63A
f·
-
~-
-
I
i
i
I
1,14A
SECONDS
FIGURE 2: Typical Power-On Sequence
~
...
-
,
1,03A
+5VDC
4SA +12 VDC
rr rr
_--_
);1---------1))1------------
DC ON
I-
12
sec.
1yp.
---.j
r
ROTATIONAL SPEED
~I------------
REGULATED ±O.S%
(
)
r--10 sec. typo
---.j
- TRACK"
~ .J~~
__________ __
------------)~.J~----~
l
- READY
20
msec, max.H
- ---------~(,..(-----I(,..(------~
).1 }.;
- SEEK COMPLETE
5 msec. max, H
------------)~~,..(----~,c,..(------~
1"141-----------25
sec,
max·-----~
.. I
ST2511251 RI277R Product Manual, Rev.A
1-9