Delta Electronics LCP-2488A4EDRxM - Manual (Page 3)

LCP-2488A4EDRxM
DELTA ELECTRONICS, INC.
3 Nov., 2006
Rev. 0A
www.deltaww.com
Optical Characteristics
(V
CC
=3.3V ± 5%, Data Rate=2.488Gb/sec, PRBS=2 23 -1 NRZ)
Parameter Symbol Min. Typ. Max. Unit Note
Transmitter
Output Optical Power (Avg.) P O -9.5 -4 dBm
Optical Extinction Ratio ER 8.2 dB
Center Wavelength λ C 830 850 860 nm
Spectral Width (RMS) σ 0.85 nm
Optical Rise/Fall Time t
r
/ t
f
150/200 psec 1
Relative Intensity Noise RIN -117 dB/Hz
Output Eye
Complies with the IEEE 802.3z/D2 specification, and is class 1 laser
eye safety
Receiver
Sensitivity (Avg.)
@ OC-48
@ 2x Fibre Channel
@ Gigabit Ethernet
@ OC-12
@ OC-3
P IN
-17
-17
-17
-20
-21
dBm
2
3
3
2
2
Input Optical Wavelength λ 850 nm
LOS-De-asserted (Avg.) P A -17 dBm
LOS-Asserted (Avg.) P D -30 dBm
LOS-Hysteresis P A -P D 0.5 dB
Overload P
O
-3 dBm
Notes:
1. These are 20%~80% values
2. Measured with 9dB extinction ratio light source and PRBS 2 23 -1 test pattern.
3. Measured with 9dB extinction ratio light source and PRBS 2 7 -1 test pattern.
Mean level of logical “1”
Mean level of logical “0”
A
m
pl
it
ud
e
Time
Optical Pulse Mask with Bessel Filter Specified in ITU-T G.957
1.25
1.00
0.75
0.25
0.00
-0.25
Mean level of logical “1”
Mean level of logical “0”
A
m
pl
it
ud
e
Time
Optical Pulse Mask with Bessel Filter Specified in ITU-T G.957
1.25
1.00
0.75
0.25
0.00
-0.25
Mask of the eye diagram for the optical transmit signal