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The 7710DCDA-HD is a reclocking high definition serial digital video distribution amplifier and a high quality downconverter for 1.5Gb/s HDTV signals. It can also function as a monitoring distribution amplifier for standard definition 270Mb/s signals. The 7710DCDA-HD provides 4 reclocked DA outputs and 3 downconverted SDI or composite analog NTSC/PAL outputs (selectable). The 7710DCDA-HD accepts all the popular international SMPTE ST 292-1 video formats. When the 7710DCDA-HD down converts 1080p/23.98sF input video to 525i/59.94 with a 3:2 pulldown, the 3:2 pulldown cadence can be free running or locked to embedded SMPTE ST 12-2 time code.

The 7710DCDA-HD has color space conversion from ITU rec. 709 to ITU rec. 601, and will provide various down converted formats such as 16:9 letterbox, 14:9 letterbox, 13:9 letterbox, 4:3 center crop, and 4:3 anamorphic squeeze. The 7710DCDA-HD supports Widescreen Signaling (WSS) on the output to handle various aspect ratios of program material. Full 10 bit processing is provided throughout the signal path to achieve excellent downconversion quality. The module allows for selectable horizontal and vertical filters to control picture sharpness. It also de-embeds two groups of audio and re-embeds the audio on the SDI output in time with the video. All parameters may be controlled by use of the on screen display menu.

The 7710DCDA-HD has a closed caption monitoring capability that decodes EIA-608 or EIA-708 captions that have been encoded into the VANC data space of an HD video input, or EIA-608 captions from a SD video input.

The 7710DCDA-HD provides card edge LEDs to indicate signal present and audio groups present. The 7710DCDA-HD occupies one card slot and can be housed in the 1RU 7801FR frame which holds up to four single or two dual slot modules, the 3RU 7800FR frame which has a 15 slot capacity, the portable 3RU 350FR frame which has a 7 slot capacity, or a standalone enclosure which holds a single module.


  • Serial digital 1.5Gb/s HD input per SMPTE ST 292-1
  • Supports most international standards including 1080i/60, 1080i/59.94, 1080i/50, 1080p/24, 1080p/23.98, 1080p/24sF, 1080p/23.98sF, 720p/60, 720p/59.94, 480p/60, and 480p/59.94
  • Will also accept 270Mb/s SD input per SMPTE ST 259 in a pass through mode - auto senses HD or SD inputs
  • 4 Reclocked DA outputs (HD if HD inputs applied, SD if SD inputs applied)
  • 3 Selectable SDI or Composite Outputs (downconverted from HD if HD input applied, from reclocked SD if SD input applied)
  • High quality HD to SD down conversion
  • Supports 16:9 letterbox, 14:9 letterbox, 13:9 letterbox, 4:3 center crop, and 4:3 anamorphic squeeze aspect ratio conversions
  • On screen display used to configure the operating modes
  • 1080p/23.98sF conversion to 525i/59.94 with 3:2 pulldown sequence
  • HD to SD colour space conversion (ITU rec. 709 to ITU rec. 601)
  • De-embeds Audio from HD video and embeds into standard definition SDI video (2 groups)
  • Moves ANC data (eg. captioning, timecode) from HD video to standard definition SDI video
  • Decodes and displays EIA-608 or EIA-708 captions from incoming video
  • On Screen aspect ratio marker
  • Card Edge LEDs for signal presence, equalization warning, audio groups present, module status
  • VistaLINK® capable for remote monitoring, control and configuration capabilities via SNMP; using VistaLINK® PRO, CP-2116E or CP-2232E Control Panels. VistaLINK® is available when modules are used with the 3RU 7800FR frame and a 7800FC VistaLINK® Frame Controller module in slot 1 of the frame


Serial Video Input

Standard SMPTE ST 259 - Pass through mode
SMPTE ST 292-1 (1.5Gb/s), SMPTE ST 260, SMPTE ST 274, SMPTE ST 296, SMPTE ST 349
1080i/60, 1080i/50, 1080p/30sF, 1080p/25sF, 1080p/24sF, 1035i/60, 720p/60, 480p/60 and the 1/1.001 divisor versions where applicable - software selectable or autodetect
Number of Inputs 1
Connector BNC per IEC 61169-8 Annex A
Equalization Automatic to 100m @ 1.5Gb/s with Belden 1694A or equivalent cable.
Return Loss > 15dB up to 1.5GHz

Serial Video DA Output

Standard Same as input (SMPTE ST 259 or SMPTE ST 292-1)
Number of Outputs 4 reclocked
Connector BNC per IEC 61169-8 Annex A
Signal Level 800mV nominal
DC Offset 0V ±0.5V
Rise and Fall Time 200ps nominal for HD, 750ps nominal for SD
Overshoot < 10% of amplitude
Return Loss > 15dB up to 1.0Gb/s, > 10dB up to 1.5Gb/s
Wideband Jitter < 0.2UI

Downconverted Serial Video Output

Standard SMPTE ST 259-C (270Mb/s)
Number of Outputs Up to 3 (jumper selectable)
Connector BNC per IEC 61169-8 Annex A
Signal Level 800mV nominal
DC Offset 0V ±0.5V
Rise and Fall Time 750ps nominal
Overshoot < 10% of amplitude
Return Loss > 15dB at 270Mb/s
Wideband Jitter < 0.2UI

Downconverted Composite Analog Video Outputs

Standard Analog composite NTSC (SMPTE ST 170) or Analog composite PAL (ITU-R BT.470)
Number of Outputs Up to 3 (jumper selectable)
Connector BNC per IEC 61169-8 Annex A
Signal Level 1V p-p nominal
DC Offset 0V ±0.1V
Return Loss > 35dB up to 5MHz
Frequency Response 0.2dB to 4MHz
Differential Phase < 0.5° (< 0.3° typical)
Differential Gain < 0.8% (< 0.5% typical)
SNR > 78dB to 5MHz (shallow ramp)
Impedance 75Ω

Input to Output Processing Delay

Video Delay Just less than 1 frame to 2 frames depending on input video format, processing mode and phase setting (refer to table 3 in manual), ie: with 1080i/59.94 input the delay is < 1 Frame delay
Audio Delay Delayed and re-embedded in time with the output picture


Voltage +12V DC
Power 10 Watts
EMI/RFI Complies with FCC Part 15 Class A, EU EMC Directive


Number of Slots 1

Ordering Information

7710DCDA‑HD HD Down Converter and Distribution Amplifier

Ordering Options

Notes Rear plate must be specified at time of order - eg: [model]+3RU
Rear Plate Suffix
+1RU 1RU rear plate for use with 7701FR Multiframe
+SA Standalone Enclosure Rear Plate
+3RU 3RU rear plate for use with 350FR, 7700FR-C or 7800FR Multiframes


350FR Portable Multiframe which holds 7 single slot modules
7700FR-C 3RU Multiframe which holds 15 single slot modules
7800FR 3RU Multiframe which holds 15 single slot modules
7701FR 1RU Multiframe which holds 3 single slot modules
S7701FR 7700 Series Standalone Enclosure


7800FC VistaLINK® Frame Controller
CP-2116E System Control Panel, One Touchscreen LCD and 16 LCD Buttons
CP-2232E System Control Panel, 2RU, Two Touchscreen LCDs and 32 LCD Buttons