PESA Cheetah 1024x256, Manual

Page: 207 / 235

C
HEETAH
S
ERIES
S
WITCHERS
– C
HAPTER
12
81-9059-0570-0 Rev. C
Proprietary Information of PESA S
WITCHING
S
YSTEMS
, I
NC
. 192
TABLE 43: Matrix Board LEDs
LED C
OLOR
S
TATUS
D
ESCRIPTION
A
CTION
R
EQUIRED
ON Indicates that a control error
has occurred or a loss of receive
clock from frame controller has
been detected. A control error
includes a bad CRC of the
received data, incorrect number
of words in the message being
received, or corrupted data in
the message being received. In
the case of a control error, the
LED will remain illuminated
until a message with a good
CRC has been received. Remove and re-insert the board.
If the condition continues, replace
the board. Control Error Red
Blinking Indicates a missing receive
clock error. Remove and re-insert the board.
If the condition continues, replace
the board.
In Use Yellow ON
Indicates that a crosspoint on
the matrix card is activated.
None
ON
Indicates that the +28Vpower is
stable
and within normal
operating parameters.
None
+28V Green
OFF
Indicates that 28V is not stable
or the 3.3V or 2.5V power
supplies are not working. Remove and re-insert the board.
If the condition continues, replace
the board.
+3.3V Green
ON
Indicates that the +3.3V power
is stable and within normal
operating parameters.
None
+2.5V Green ON
Indicates that the +2.5V power
is stable and within normal
operating parameters.
None
Port A, Port B
(Surface-
mounted on the
PCB)
Yellow
ON
Indicate whether the board is
communicating with the frame
controller via communications
port A or B.
None