Chapter 2 Modules
Indicator
Name
Color
Meaning
Flash
Status
Descrip-
tion
SCS
Green
System
clock
running
status
indicator
FPGA
control
indicator
, three
status: on,
quick flash
and off.
On: the
system
clock is
normal.
Quick
flash: 10ms
wrong,
0.125s on
and 0.125s
off.
Off: 50CHIP
wrong
CST
Green
Communi-
cation sta-
tus indica-
tor between
CPU and
MMC
Controlled
by CPU,
EPLD trans-
parent
transmis-
sion
On: normal
communi-
cation be-
tween CPU
and MMC
Off: failed
communi-
cation be-
tween CPU
and MMC
RUN
Green
Running
Indicator
MMC control
indicator
5 Hz flash:
the board is
in power-up
procedure.
1 Hz flash:
the board
is under
normal
operation.
On: the
version
download is
succeed and
the version
is being
started.
Off: the
board is
abnormal.
ALM
Red
Alarm
Indicator
MMC control
indicator
On: the
board has
alarm.
Off: the
board has
no alarm.
Site Alarm Module (SA)
Function
module provides the following functions.
�
Communicates with
through PMB-0 cable and performs CC
unit functions.
�
Supports nine fan rev control and monitoring.
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21