Cisco Laser Link Return Digital Receiver with Ethernet Scheda Tecnica
Laser Link
Modular Optical Receivers
3
Specifications
Optical
Units
LLFR
Forward Receiver
ELLRR-S
Reverse Receiver
Input Power
dBm
-10 to +3
-17 to +3
Optical Return Loss
dB
≥ 40
n/a
Equivalent Input Noise Current
pA/sqrtHz
≤ 7
≤ 7
Wavelength
nm
1290 – 1600
1290 – 1600
RF
Impedance
ohms
75
75
Return Loss
dB
dB
16 (45-550 MHz)
14 (550-870 MHz)
16
Output Level
dBmV
35
1
49
3
Level Adjustment
dB
6
2
25 w/o AGC
19 with AGC
plus plug-in pad
AGC Range
dB
n/a
±2.0
4
Slope Adjustment
dB
+2 to -3
n/a
Frequency Response
MHz
45 – 870
5 - 210
Ripple
(peak – to –valley)
dB
±1.0
±0.75
Test Point Attenuation)
dB
-30
±1.0 -20
±1.0
NPR@ 41 dB
5
dB
>15
Power
Supply Voltage
V dc
24
24
Supply Current
(mA)
600
430
Power Consumption
W
14.4
10.3
Physical
Operating Temperature
°F (°C)
32 – 122 (0 – 50)
32 – 122 (0 – 50)
Relative Humidity Range
(non condensing)
%
15 – 95%
5 – 95%
Optical Connector
SC/APC (Standard)
SC/UPC (optional)
SC/APC (Standard)
SC/UPC (Optional)
E2000 (Optional)
Mounting
Laser Link Mainframe
Laser Link Mainframe
Dimensions (HxWxD)
in. (cm)
5.25x2.25x13.5
(13.3x5.72x34.3)
5.25x1.05x13.5
(13.3x2.66x34.3)
Weight
lbs (kg)
3 (1.35)
1.75 (0.79)
Notes:
1.
Maximum gain, 0 dBm optical incident at 3.5% index of modulation.
2.
Electrically variable; additional plug-in pad for coarse adjustment; assumes no contribution from the transmitter.
3.
Maximum gain, -10 dBm optical incident at 10% index of modulation; responsivity of 0.85 mA/mW with AGC.
4.
Based on a change in received optical power of up to +/-1 dB, over +1 to -10 dBm optical received power.
5.
LLNTR Transmitter, optical input power from -6 to 0 dB with the output set to obtain a minimum of -28.5 dBmV/Hz with a 35MHz noise
spectrum.
spectrum.