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Products & Technology : 1550nm CATV Fiber Optic Transmitter
WaveActiveX 1550nm CATV Fiber Optic Transmitter Contents:
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Features & Benefits
  • 1U, 19 inch Rack Housing
  • 45 to 870MHz forward Bandwidth
  • Patented RF pre-distortion circuit for excellent CNR and low distortion performance
  • Adjustable SBS threshold (13,16, 18 dBm)
  • Unique simultaneously SBS/SPM suppressing for point-to-point and point-to-multiple application
  • Microprocessor control & monitoring
  • Automatic/Manual gain control mode
  • Front panel LCD display
  • RS485 OR SNMP control interface
  • RoHS Compliant
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Applications
  • CATV Head End
  • FTTx CO
  • Broadband Video and Data Transmission
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Product Capabilities and Value

The NE5000L Series is a family of high performance 1550 nm EM CATV fiber optic transmitter. The NE5000L series is packaged in a convenient 1 RU 19” housing and it provides a cost effective solution with unmatched performance as it couples high optical power, up to 10 dBm with low optical line-width.

When used alone or coupled with one or more EDFAs, NE5000L offers high CNR for long distance. With patented RF predistortion circuit, NE5000L series offers excellent CSO and CTB performance. Additional feature such as adjustable SBS suppression control is available.

This family of transmitters is a part of the full complement of products developed to support and enhance the deployment of traditional HFC, passive HFC, and fiber to the home (FTTH) Networks.

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Figure 1: Specifications
Optical Parameters
Laser type 1550 nm DFB LD
Optical wavelength 1550 +/- 10 nm or ITU grid
Laser RIN noise density < -160 dB/Hz
Optical connector SC / APC with shutter, FC/APC or
E2000/APC (optional)
Optical power > 7 dBm or > 9 dBm
Optical output ports 2
Adjustable SBS suppression threshold (13, 16, 18 dBm) Adjustable (option)
Or a specific SBS threshold value
RF Parameter
Operating bandwidth 45 to 870 MHz
Channel loading 45 to 550 MHz for 77 ch NTSC (or 60 ch PAL)
RF input impedance 75 ohm (unbalanced)
RF input return loss < -16 dB
RF connector F type female
RF input level (analog) @ Broadcast port 15 to 25 dBmV/ch with AGC control, OMI/ch = 3 +/- 0.25 %. Nominal value @ 20 dBmV/ch (@ 77 channels loading) with MGC
RF input level 45 dBmV/ch, OMI/ch = 1.5 +/- 0.3 % @Narrowcast port
Flatness +/- 0.75 dB (45 to 870 MHz)
Test point +15 +/- 1dBmV/ch (under AGC mode
@ 77 channels loading)
Link Performance (Typical)
65 km fiber + EDFA (NF<5) Test conditions:
  1. Room temperature: 25 +/-5 degree C
  2. Optical received power = 0 dBm
  3. 77 CW carriers (NTSC frequency planning)
  4. SBS threshold = 16 dBm
CNR 52 dB
CSO < -65 dBc @Port 1
        < -63 dBc @Port 2
CTB < -65 dBc
XM < -65 dBc
Electrical/Environmental/Mechanical
Control interface RS485 OR SNMP
Operating temperature O to 50 degree C
Storage temperature -20 to 60 degree C
Operating humidity 85 % Max
Power supply 90 to 260 VAC, 50/60 Hz, 15 W (Max.)
Dimensions 447D x 485W x 45H(mm)
RS485 with single AC: 350 D x 485 W x 45 H (mm)
Weight < 6.5 kg
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Figure 2: Standard Configuration

1550nm CATV Tx Standard Configuration
Product Group Connector ITU Grid Channel SBS Control Interface Power Feed
_______- __- __- __- __- __-
NE5000L SS:SC/APC
FC:FC/AFC
E2:E2000/APC
34: ITU DWDM Ch 34
XX: Wavelength not Specified
AD: Adjustable
13: 13dBm
16: 16dBm
18: 18dBm
RS: RS485
SN: SNMP
SA: Single AC
DA: Dual AC
SD: -48V DC
(single)
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