2808_16 Datasheet, PDF (1/2 Pages) Emcore Corporation – Channel CATV Optical Receiver

2808 79 Channel CATV Optical Receiver
DATASHEET | JULY 2014
Applications
CATV
Broadband
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
FIBER OPTICS
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.
RF & Optical Characteristics
Parameter
Min
Typ
Max
Units
Optical Input Power
-8.0
0.0
+4.5
dBm
Operating Wavelength
Operating Wavelength
Bandwidth
Output RF Impedance
RF Output Level
RF Output Return Loss
1290
1530
40
-
-
-
1310
1550
-
75
-
16
1330
1571
860
-
+28
-
nm
nm
MHz
Ohms
dBmV
dB
Back Reflection Tolerance
-
-
-50
dB
Required Fiber Bandwidth
2,000
-
-
MHz
Composite Second Order (CSO)
-
-63
-
dBc
Composite Triple Beat (CTB)
-
-66
-
dBc
Carrier-to-Noise Ratio
58
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.