Cisco Laser Link Ancillary Modules 安装指南
78-4028521-01 Rev B
Setup and Operation
3-13
Alarm Tables,
Continued
Models
(front panel
label)
Description
Vital Sign
VS#/Pin#
Vital Sign Description
Logic
ELLT-3-14
Laser Link full-
width 45-870 MHz,
front panel optical
connector, front
panel slope and
attenuator adjust
controls
#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 ±20%, 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
1550 nm Forward Transmitters Alarm Table
Models
(front panel
label)
Description
Vital Sign
VS#/Pin#
Vital Sign Description
Logic
XMTR
LEMT-P-10
LEMT-S-10
LEMT-I-10
Laser Link single-
width transmitter,
dual outputs
#1/#15
#2/#5
#3/#6
#4/#7
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 ±20%, optical
power – 25%, “A” supply
fails, fan failure
0 V = normal
+5 V = alarm
1 V/mW
1 V/50 mA
24 V = normal
0 V = alarm