2808 79 Channel CATV Optical Receiver
DATASHEET | JULY 2014
FIBER OPTICS
Applications
CATV
Broadband
The 2808 79 Channel VSB/AM Optical Receiver provides CATV distribution headend
operators with an extensive array of features that offer a low-cost solution to increase
system performance. The receiver provides an RF output of +28 dBmV allowing multiple
RF splits without the use of an external RF amplifier. The 2808 is equipped with a manual
gain control that allows the user to adjust the RF output level for optimum performance.
Additionally, the receiver’s ability to operate over a wide optical input range of -8 to +4.5
dBm allows for a variety of system designs without degrading performance. The 2808 can
transport up to 79 CATV channels using the entire high-frequency bandwidth, or
alternatively, it can transport up to
79
channels of standard analog CATV signals while
utilizing the remaining high-frequency bandwidth to transport 30 digital QAM channels. The
receiver includes a universal AC power supply, freeing the user from a bulky wall-mount AC
adapter. The streamline design of the 2808 offers the flexibility and performance demanded
by today’s broadband professional.
Features
Wide Bandwidth of 40 to 860 MHz
Accommodates Up to 79 Channels on
All Models
Provides Excellent Picture Quality with a
CNR up to 54.5 dB, CSO of -63 dBc,
and CTB of -66 dBc
RF Output Up to +28 dBmV Allows a
Greater Number of Drops or Splits
Wide Optical Input Range of -8 dBm to
+4.5 dBm Permits the Use of a Lower
Power Transmitter, Reducing System
Cost
Built-in, Universal AC Power Supply
Frees System User from Bulky Wall-
Mount AC Adapters
RF & Optical Characteristics
Parameter
Optical Input Power
Operating Wavelength
Operating Wavelength
Bandwidth
Output RF Impedance
RF Output Level
RF Output Return Loss
Back Reflection Tolerance
Required Fiber Bandwidth
Composite Second Order (CSO)
Composite Triple Beat (CTB)
Carrier-to-Noise Ratio
Min
-8.0
1290
1530
40
-
-
-
-
2,000
-
-
Typ
0.0
1310
1550
-
75
-
16
-
-
-63
-66
58
Max
+4.5
1330
1571
860
-
+28
-
-50
-
-
-
Units
dBm
nm
nm
MHz
Ohms
dBmV
dB
dB
MHz
dBc
dBc
dB
System performance specifications indicated for use with 9/125
µm
singlemode fiber
.
Network Diagram
| REV 2014.07
Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice.
2808 79 Channel CATV Optical Receiver
DATASHEET | JULY 2014
FIBER OPTICS
Electrical Characteristics
Parameter
Power Supply Voltage
Power Supply Frequency
Power Dissipation
Min
-
50
-
Typ
120
60
8
Max
240
-
-
Units
V
AC
Hz
Watts
Physical Characteristics
Parameter
Weight
Dimensions
Min
-
-
Typ
1.1
0.5
8.45 x 2.95 x 1.12
215 x 75 x 29
Max
-
-
Units
lbs
kg
in
mm
Environmental Characteristics
Parameter
Operating Temperature Range
Storage Temperature Range
Humidity (RH, non-condensing)
Min
0
-20
5
Typ
-
-
-
Max
+50
+70
95
Units
O
O
C
C
%
79 Channel CATV Receiver Part Numbers
Part Number
2808R-SFSP
2808R-SFAP
Description
Fiber Optic Receiver, 1310/1550 nm, SC/APC Optical Connector
Fiber Optic Receiver, 1310/1550 nm, FC/APC Optical Connector
| REV 2014.07
Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice.
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