IQSDA34
www.snellgroup.com
Card Edge LEDs
Issue 2 Rev 3
Page 12
©
2015 Snell Limited
4.
Card Edge LEDs
The LEDs on the edge of the module indicate its operating status:
POWER
OK
CPU
CHAN 2
ERR
CHAN 2 BYPASS
CHAN 2 OK
CHAN 2 RATE
CHAN 1 ERR
CHAN 1 BYPASS
CHAN 1 OK
CHAN 1 RATE
CHAN 3
ERR
CHAN 3 BYPASS
CHAN 3 OK
CHAN 3 RATE
LED
Color
Description
Power OK
Green
This indicator is illuminated when a positive power supply
is present.
CPU
Green
This indicator will blink to indicate CPU activity.
Channel N OK
Green
This indicator is illuminated when the input channel is
locked to the input signal.
Channel N Bypass
Yellow
This indicator is illuminated when the signal on the input
channel is not being reclocked. That is, in reclock bypass
mode.
Channel N Error
Red
This indicator is illuminated when there is unknown or no
input on the input channel.
Channel N Rate
Green
This indicator pair shows the rate on the input channel as
follows:
•
Both LEDs illuminated – 3 Gbit/s
•
Left LED only illuminated – 1.5 Gbit/s
•
Right LED only illuminated – 270 Mbit/s
•
Both LEDs off – Rate unknown
