Cisco AGS+, Hardware Installation And Maintenance

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Applique
LED
Indicators
Other
Synchronous Serial
Appliques LED Indicators
On
the
RS-232 RS-232
Synchronous Data Link Control
SDLC
and RS-449
appliques the
LEDs
are
located beneath the connectors
These
synchronous serial appliques
have
the lamp
pattern
shown
in
Table
B-8
except
the
RS-232
SDLC
applique
which
has
two
additional
LEDs
Use
the green
LEDs
toward
the
end
of the row
for orientation
LEDs
in
Table
B-8
are listed
as
viewed
left to right
on the applique
Table
B-U RS-232
DCE
and
DIE
RS-232
SDLC Dual-Mode
and RS-449
DCE
and DTE
Applique
LED
Indicators
Direction
Color
Mnemonic
Function
DCE
DIE
Red RxD
Receive Data
Red
RxC
Receive Clock
Red
TxD
Transmit Data
Red TxC
Transmit Clock
Red
DTR
Data Terminal Ready
Red RTS
Request
To
Send
Red CTS
Clear
To Send
Red
RLSD
Receive Line
Signal
Detect
Red LT
Software
Loopback
Green
5V 5V
OK
On
if
OK
Green
12V
12VOK
OnifOK
Green
-l2V -12V
OK
On
if
OK
Green
OK
Applique
test
OK
On
if
OK
Red
NRZI/NRZ
NRZT/NRZ
selection Off
for
NRZ
Red
DCEIDTE
Mode
selection Off
for
DCE
mode
Refers
to
the
RS-232 SDLC
dual-mode
applique only
B-14
AGS
Hardware
Installation
and Maintenance