Cisco Laser Link 1310 nm Transmitters Installationsanleitung
3-18
Setup and Operation
78-4028521-01 Rev B
Alarm Tables,
Continued
Models
(front panel
label)
Description
Vital Sign
VS#/Pin#
Vital Sign Description
Logic
LLFR
Laser Link full-
width 50-750 MHz
and 45-870 MHz
forward receiver,
front panel optical
connector
#1/#5
#2/#11
#3/#12
#4/#4
Redundant Power Alarm
– active when module
detects loss of +24 V DC
“A” supply
Optical Receive Power
Loss of RF Alarm (< +31
Optical Receive Power
Loss of RF Alarm (< +31
dBmV total power)
Global Alarm – optical
Global Alarm – optical
receive power < -10 dBm,
“A” supply fails
0 V = normal
+5 V = alarm
1 V/mW
5 V = normal
0 V = alarm
24 V = normal
24 V = normal
0 V = alarm
1550 nm DFB Forward Transmitters Alarm Table
Models
(front panel
label)
Description
Vital Sign
VS#/Pin#
Vital Sign Description
Logic
LLNT
Laser Link LLNT 750
MHz and 870 MHz
1550 nm transmitter
for DWDM
applications
#1/#5
#2/#11
#3/#12
#4/#4
Redundant Power Alarm
– active when module
detects loss of +24 V DC
“A” supply
Optical Output Power
Laser Bias Current
Global Alarm – +5 V DC
Optical Output Power
Laser Bias Current
Global Alarm – +5 V DC
fails, laser temp ±5%, laser
bias current ±10%, optical
power – 25%, “A” supply
fails
0 V = normal
+5 V = alarm
1 V/mW
1 V/50 mA
24 V = normal
0 V = alarm