Simplifying Video Transport
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 (150 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 DigiLink Manager
• No external software required
• HTTP or SNMPv2
• Monitor
• Configure
• Upgrade firmware
16
Composite Video (NTSC/PAL) and Analog Audio to
SDI Conversion with Optical Transmitter [DLC170AD]
DigiLink Video Transport System
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.
DLC170AD NTSC/PAL and Analog Audio to SDI
Analog Audio CH 1
Analog Audio CH 2
Analog Audio CH 3
Analog Audio CH 4
AES Encode
AES Encode
Video Standby
Signal
NTSC/PAL
NTSC/PAL
to
SDI Conversion
SFP
SDI
Audio Embed
Internal
Input
Select
Monitor
Select
Front Mini SMB