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HSA
LED
B-5
Thble
Indicators
and
Power
Signals
On
Mnemonics
ON
ON
-5
ON
RT
ON
ST
ON
CA
ON
TA
LA
OFF
LB
OFF
LC
OFF
ON
LI
OK
OFF
ER
OFF
The
are defined
following
signals
inside
the
signal
is
present
normal
and
internal
operation
CA
DCE
indicates
that
the
DTE.TA
and
from
the
indicates
DSU
DCE
Data
the
transmission
When
LA
LC
LB
and
lit
mode
These
diagnostic
loopbacks
DCE
DTE
LA
LB
and
the
DTE
from
the
to request
DTE
from
loopbacks
the
must
with
you
enable
the
it
hssi
externallooprequest
LC
used
If
not
should remain
is
it
the
following
configuration
no
hssi
external-loop-request
Refer
to
the
companion
appropriate
commands
configuration
OK
The
indicator
green
lights
ER
when
red
indicator
lights
HSA
and
card
the
applique
Normal
Signal
up
I/F
is
ON
VCC
ON
VEE
ON
Receive
ON
Send
ON
DCE
ON
DTE
OFF
LoopbackA
OFF
Loopback
OFF
Loopback
OFF
Loopback
diagnostic
ON
SW OK
set by software
OFF
Ribbon
B-S
The
in Table
HSA
and
transmitter
receiver
during loopback
DSU
data
service
unit
DTE
the
prepared
is
can begin only
after
LI
indicate
that
the
system
enable
the
system
LC
and
are software-controlled
DSU
LC
in the
loopbacks
LC
by
default
inhibited
is
following
configuration
disabled
to
avoid
command
software
publication
the software
after
has
ribbon
the internal
cable
installed incorrectly
is
DCE
Function
Timing
Timing
Available
Available
Internal
cable
error
RT
ST LEDs
and
indicate
The
clock
external
source
is
send and
receive
prepared
to
is
send and
to
receive
data
CA
andTA
both
have
in
an
internal
or
external
is
the links
to
diagnostics
verify
LA
functions
and
DCE
DSU
the
sent
by
is
DSU
by software
If the
supports
command
can be used
before
it
LC
on
noise
the
line.To
disable
more
information
for
verification
performed
its
startup
HSCI
located
between
the
LED
Indicators
Reading
DTE
that
clock
during
data
to
and
from
to
been
asserted
loopback
between
LB
are sent
to
request
LC
LC
use
on
using
The
system
B-li
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