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Harmonic METROLink HLT7706R 1550nm TX

Harmonic’s MAXLink™ product line is a family of transmitters and optical amplifiers designed for 1550 nm based network applications. The MAXLink system provides a cost-effective solution for a variety of applications and architectures, including long-haul transport that is beyond the reach of 1310 nm transmitters, and fiberdense architectures that take advantage of high-power optical amplifiers. In addition, this system is ideally suited for new, evolving transport architectures such as redundant rings, broadcast layer transmission, and hub interconnects used in broadband networks.

The MAXLink product line includes slim 1-RU 19” rack-mountable transport devices, such as 1550 nm broadcast optical transmitters, erbium-doped fiber amplifiers and optical switches. The stand-alone 1-RU product design saves valuable rack space and operational costs since an additional platform and power supplies are not needed.

The high-performance HLT 7706R/7806R transmitter is designed for supertrunking or distribution applications where it is immediately followed by an optical amplifier. In supertrunking applications, an important component of the MAXLink system is the MAXLink Extender (HLE). The HLE enables a push-pull transmission architecture over two fibers, resulting in a CNR improvement of at least 3 dB and a CSO improvement of at least 6 dB (with respect to single-fiber performance).

Features

  • Industry-leading, high performance 1550 nm transmission improves network transport.
  • Stand-alone 1-RU 19” rack-mountable design saves valuable space and eliminates need for additional platform and power supplies.
  • Integrated element management intelligence with SNMP compatibility enables seamless communication with comprehensive network management systems.
  • Microprocessor control of all key parameters provides consistent, optimum product performance and monitoring.
  • Harmonic’s patented SBS suppression allows the highest launch power and performance available at 1550 nm in the cable and telecommunications industries–up to 17 dBm (50 mW).
  • Dual outputs provide route diversity and cost efficiency.
  • Dual complementary outputs enable push-pull operation with MAXLink Extender (HLE) for 3 dB or more in CNR improvement.
  • Harmonic’s proprietary electrical linearization provides a proven, robust solution for optimal distortion performance
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Description

Harmonic METROLink HLT 7706R 1550 nm Optical Transmitter

Specifications

Transmitter Performance1, 2

  • Carrier-to-Noise (CNR):
    • > 55.0 dB3
    • > 52.0 dB4
  • Carrier-to-CSO:
    • > 65 dB (dual fiber operation)3
    • > 67 dB (single fiber operation)3
  • Carrier-to-CTB:
    • > 65 dB3
    • > 63 dB4
  • With Harmonic Link Extender (HLE):
    • Carrier-to-Noise > 3 dB improvement
    • Carrier-to-CSO > 6 dB improvement

Optical Outputs

  • Wavelength:
    • 1563 to 1565 nm (-D7)
    • 1550 to 1560 nm (-F7)
    • 1540 to 1547 nm (-W7)
  • Flatness: < 1 dB peak-to-valley
  • Number of Outputs: 2
  • Optical Power: 7 dBm minimum
  • Laser Shutdown: DISABLE/ENABLE switch
  • Eye Protection: Safety shutter

SBS Suppression3

  • HLT 7706R/7806R:
    • 17 dBm (50 mW) dual SBS-tone
    • 14 dBm (25 mW) single SBS-tone

RF Input

  • Input Level Range: 18 to 26 dBmV
  • Operational Bandwidth: 55 to 870 MHz
  • RF Attenuator Adjustment Range: 12 dB
  • Impedance: 75 ?
  • Return Loss: > 16 dB
  • Level Control: Auto/manual

User Interface

  • Front Panel:
    • Full numeric keypad
    • Multi-line alphanumeric display
  • RF Monitor Point (on front panel):
    • Flatness ± 0.5 dB
    • Return Loss > 16 dB
    • Test Point Loss 20 dB ± 1 dB (below RF input)
  • Test Point Loss: 20 dB ± 1 dB (below RF input)
  • Rear Panel:
    • Laser ON/OFF switch
    • Optical output drawer
    • RJ-45 connector for network management
    • TTL alarm contacts

Power Requirements

  • AC Version:
    • 100 to 240 V
    • 50 to 60 Hz

Environmental

  • Operating Temperature:
    • 0° to 50° C
    • Range 32° to 122° F
  • Storage Temperature:
    • -40° to 70° C
    • Range -40° to 158° F
  • Relative Humidity: Maximum 85% non-condensing
  • Over Temperature and Laser Protection: Software and hardware

Notes:

1. Overall performance of a 1550 nm transmission system depends on many factors. Consult your Harmonic applications engineer for more information.

2. Dual-fiber vs. single-fiber and dual SBS-tone vs. single SBS-tone are operating modes that can be selected from the front-panel display.

3. Performance given for MAXLink transmitter + HRM 3811 optical receiver with 0 dBm received power. 80 NTSC channels.

4. Performance given for MAXLink transmitter + HRM 3811 optical receiver with 0 dBm received optical power. 80 PAL channels.

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Product Details
HLT7706R
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