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DigiLink DLC170AD

Composite Video (NTSC/PAL) and Analog Audio to SDI Conversion w/ Optical Transmitter
Composite Video (NSTC/PAL) and Analog Audio to SDI Conversion w/ Optical Transmitter

Product Details

The DLC170AD converts analog video and audio to SDI (SMPTE 259M) and provides optical transport. Used with the DLC170DA, the design insures full TV-1 RS250-C “short haul” analog performance over a true SMPTE 259M SD-SDI optical transport link.

The DLC170AD uses advanced high performance 12-bit video processing with adaptive 3D comb filters to convert NTSC-M /PAL-B/G analog composite video to ITU-R BT.601/656 compliant, 525 or 625 line, 4:2:2 component digital video. Four channels of analog audio are converted to 24-bit digital signals and sampled at 48 kHz and then embedded into the digital video per SMPTE 272M for a total of 4 analog channels. The audio can be inserted into any one of the four groups.

Using the backplane to provide jumper free connections, additional audio channel groups can be added by cascading the DLC170AD digital output to one or more DLC150E audio embedders. An SFP installed into the final module provides the optical output of the combined signals.

A front panel monitor jack can be selected to output either analog or digital video. When set to analog, the incoming analog video can be checked for signal level and quality using conventional analog video equipment. When set to digital, the converted video in 270Mb/s SDI format with embedded audio can be checked using digital video test equipment.

The DLC170AD can be easily managed using DigiLink’s DL-Manager Element Management System

  • Specifications
  • Features
  • Diagrams
  • Compliance
  • Downloads
  • Specifications
    Analog Video to SDI Conversion
    Output format
    SMPTE 259M via optical interface or backplane
    Input format composite video
    SMPTE-170M NTSC-M or ITU-R BT.624-4 PAL-B/G
    Input amplitude
    1.0 V p-p nominal
    Input gain range
    ± 3 dB (1)
    Input common mode range
    ±10 V
    Input common mode rejection (0 to 5.5 MHz)
    >30 dB
    Input impedance
    75ohm or Hi-Z
    Input return loss (0 to 5.5 MHz)
    >30 dB, 75ohm
    Freq amplitude response
    NTSC to 4.5 MHz <0.10 dB
    NTSC to 5.0 MHz <0.10 dB
    PAL to 4.8 MHz <0.10 dB
    PAL to 6.0 MHz <0.10 dB
    Differential gain
    Differential phase
    <0.7 degrees
    Line time distortion
    Chroma-luma gain
    Chroma-luma delay
    <5 nS
    Signal to noise, weighted

    >67 dB

    Analog Audio to AES and Embed (6)
    4 (2)
    Balanced Analog
    Input impedance
    600ohm or >100Kohm
    Input common mode range
    Input common mode rejection
    >60 dB
    Nominal (test) level
    18 dBm (3)
    Maximum level (0 dBFS clipping)
    +10 to +24 dBm (4)
    Insertion gain
    ±0.25 dB (5)
    Freq amplitude response (20 Hz to 20 kHz)
    ±0.3 dB
    THD+N (20-20k @ +18 dBm)
    SNR (weighted)
    >95 dBA
    Crosstalk @10kHz
    70 dB
    Audio to video lead/lag
    <2 ms
    (1) Automatic or manual control.
    (2) Specifications are with 48 kHz, 24-bit audio.
    (3) Nominal level is +20 dBm for 0 dBFS (clipping) with performance specifications based on a +18 dBm test level.
    (4) User selectable maximum (0 dBFS) level in eight 2 dB steps.
    (5) Each end set to the same nominal 0 dBFS level.
    (6) Analog specifications based on end-to-end performance with DLC170DA
    Operating temperature
    0 to 50°C
    Ambient storage temperature
    40 to 80°C
    Relative humidity
    10 to 95% (non-condensing)
    Power dissipation
    8 Watts
    0.8” x 5” x 10.8” 1 slot in DigiLink chassis
    Optical Interface
    Artel Video SFP
    See SFP Specification
    Regulatory Conformance
    NEBS Level 3, CSA 60950, EN60950, EN55022 FCC Part 15 (Class A), CISPR 22
  • Features
    Single card composite video and analog audio to SDI conversion with optical transmitter (electrical to optical)

    Convert composite (NTSC/PAL) to SDI (SMPTE 259M)
    • Analog composite 75ohm video input BNC
    • Automatic NTSC-M / PAL-B/G format detection
    • 12-bit video composite to 10-bit component digital processing
    • Advanced, adaptive 3D comb filter
    • Comprehensive VBI data handling
    • SMPTE 259M SD-SDI 270Mb/s output
    • Automatic and manual gain and equalization (100 meters)
    Convert analog audio to AES and embed into SDI
    • Balanced 600ohm analog audio inputs (4)
    • SMPTE 272M 24-bit, 48 kHz audio embedding
    Use with DLC170DA for optical transport of analog video and audio
    • Exceeds TV-1 and ANSI T1.502 “short haul” specification
    Externally accessible SFP transceiver optics
    • Optical budget to 33dB
    • WDM (1310nm, 1550nm)
    • CWDM ITU G.694.2 (channels 27-61)
    • DWDM ITU G.694.1 (channels 21-60)
    Interoperates with
    • Other DigiLink modules
    • DigiLink 1220/2701 (SDI mode)
    • Other non-scrambled or non-dithered SDI optical transmitters and receivers
    Multiple monitoring options
    • Front panel monitor (mini 75ohm SMB) selectable between:
      • NTSC or PAL (pre-conversion)
      • SDI (Post-conversion)
    • Front and rear panel status LEDs
    Remote management via DL-Manager
    • No external software required
    • HTTP or SNMPv2
    • Monitor
    • Configure
    • Upgrade firmware

  • Diagrams
  • Compliance
  • Downloads