Evertz Microsystems Ltd.

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7730DAC & 7730DAC-A4

SDI to Component Analog Video Converter

VistaLINK® enabled

The 7730DAC line of serial digital video to component analog converters are broadcast quality D to A's with an extensive list of additional features. High quality digital to analog conversion of audio can be packaged with the video to create a D to A frame synchronizer with audio demux. In addition, Evertz fault monitoring processing will analyze and report video and audio problems via an On-Screen-Display, or remotely via VistaLINK® SNMP.

Features

  • 12 bit, over sampled video DACs
  • SMPTE/EBU N10, Betacam, MII and NTSC specific standards supported
  • YPbPr or RGB output format
  • Selectable setup pedestal
  • Black level and gain control of all components
  • 300mV separate composite sync output
  • Standard Features
  • SDI 525 or 625, 270Mb/s component digital video input
  • One 270Mb/s re-clocked SDI output
  • Four output BNCs for YPbPr or RGB and composite sync
  • One composite analog output on BNC for monitoring and control
  • One frame video synchronizer (with +S option)
  • Infinitely variable output phase (27MHz clock increments)
  • Freeze modes: black, freeze, pass
  • Menu adjustable free running frequency
  • VU/PPM bargraph level Indicators
  • Decodes vertical interval time code (VITC), and "burns" the time code into the monitoring output picture
  • A comprehensive on screen display is available to configure the various features of the module
  • Flexible configuration of the text and audio bar graph information displays
  • An extensive list of error conditions can be monitored and fault conditions can be configured from these conditions
    • On screen messages can be triggered by the configured fault conditions
    • VistaLINK® capable for remote monitoring and control via SNMP (using VistaLINK® PRO) when installed in 7800FR frame with a 7700FC VistaLINK® Frame Controller
    • -A4 Version
    • One group (4 channels) of synchronous 20-bit audio is de-multiplexed from the incoming digital video
    • 2 unbalanced AES audio inputs (up to 48kHz, 24 bits) on BNC
    • User selects EITHER the de-embedded audio or the input AES audio
    • The selected audio is delayed equivalently to the video delay with the +S option
    • 4 high quality 24 bit audio channels are output (analog) as balanced on 2 removable barrier strips
    • Low impedance outputs (66Ω)
    • Analog audio output levels are adjustable
    • Additional audio delay of up to 5 seconds
    • Additional audio advance of up to 1 frame, depending on video delay
    • Loss of video modes: pass audio, mute audio
Block Diagram Block Diagram

Specifications

Serial Video Input
StandardSMPTE ST 259-C, 270Mb/s, 525/625 component
Number of Inputs1
ConnectorBNC per IEC 61169-8 Annex A
Return Loss> 15dB up to 270MHz
Embedded AudioSMPTE ST 272-A
Frequency Lock Range±75ppm from nominal
Analog Video Output
StandardSMPTE/EBU N10, Betacam, MII and NTSC specific standards GBR or YPbPr formats, with or without setup
Number of Outputs1
ConnectorBNC per IEC 61169-8 Annex A
Signal Level
Video1V nominal
Sync300mV nominal
Control Ranges
Output Level> ±7.5% (all components)
Black Level±10IRE
Impedance75Ω
Return Loss> 40dB to 10MHz
Reference Video Input
StandardNTSC, SMPTE ST 170 PAL, ITU624-4
Number of Inputs1
ConnectorBNC per IEC 61169-8 Annex A
Signal Level1V nominal
Return Loss> 35dB up to 10MHz
Impedance75Ω or High Impedance (jumper selectable)
Frequency Lock Range±75ppm from nominal
Video Performance
Frequency Response< ±0.1dB (100kHz to 4.1MHz)
Noise Floor< -73dBrms (15kHz to 5MHz)
Inter-Channel Delay< ±5ns
Minimum Delay3µs
Maximum Delay1 frame plus 3µs
Analog Audio Outputs-A4 Version
Number of Outputs4
TypeBalanced analog audio
ConnectorTwo 6-pin removable terminal strips
Impedance66Ω balanced
Sampling Frequency48kHz
Signal Level0dBFS => 12 to 25dBu (user settable)
Frequency Response< ±0.05dB (20Hz to 20kHz)
Dynamic Range24 bits when AES inputs selected, 20 bits when embedded audio selected
THD+N< 0.001% (> 100dB) @ 1kHz, -1dBFS
Crosstalk< -105dB (20Hz to 20kHz)
DC Offset< ±30mV
SNR> 110dB "A" Weighting
Inter-Channel Phase Error< ±1° (20Hz to 20kHz)
AES Audio Inputs-A4 Version
StandardSMPTE ST 276, single ended synchronous or asynchronous PCM AES
Number of Inputs2
ConnectorBNC per IEC 61169-8 Annex A
Resolution24 bits
Sampling Rate32kHz to 48kHz on inputs, synchronous 48kHz on outputs
Minimum I/O Delay2.1ms
Maximum I/O Delay5s
Electrical
Voltage+12V DC
Power10 Watts (7730DAC) or 17.5 Watts (7730DAC-A4)
EMI/RFIComplies with FCC Part 15 Class A, EU EMC Directive
Physical
Number of Slots1 (7730DAC) or 2 (7730DAC-A4)

Ordering Information

7730DACSDI to Component Analog Video Converter
7730DAC-A4SDI to Component Analog Video Converter with a four-channel Analog Audio Converter/Embedder
Ordering Options
Notes• Rear plate must be specified at time of order - eg: [model]+3RU
+SFrame Synchronizer
Rear Plate Suffix
+3RU3RU rear plate for use with 7800FR, 7801FR, 7700FR-C or 350FR Multiframes
+1RU1RU rear plate for use with 7701FR Multiframe
+SAStandalone Enclosure Rear Plate
Enclosures
350FRPortable Multiframe which holds 7 modules
7700FR-C3RU Multiframe which holds 15 modules
7800FR3RU Multiframe which holds 15 modules
7701FR1RU Multiframe which holds 3 modules
S7701FR7700 Series Standalone Enclosure
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