Skip to main content
Login Contact Us


3G/HD/SD-SDI Frame Synchronizer

The IQSYN50 provides frame synchronization for HD-SDI at 3 Gb/s or 1.5 Gb/s, or SD-SDI 270 Mb/s with 32-channel embedded audio handling. Including two SDI inputs, agile synchronization and audio firewall features means the IQSYN50 is ideal for general incoming line applications. A video proc. amp provides complete control over the video levels and RGB gamut legalization, along with tracking audio delay to avoid disturbance around synchronizer wrap points.


  • 3G/HD/SD-SDI synchronizer with additional video delay up to 30 frames and auto change-over on signal loss conditions
  • Agile, router switching tolerant synchronizer operation with precision genlock adjustment allowing you to time any SDI signal to pixel accuracy with greater tolerance to mis-timed upstream SDI switching (up to ± 10 lines adjustable), ensuring disturbance-free picture output
  • Firewall for video and processed PCM audio to provide a continuous uninterrupted output
  • Reference input capable of detecting and referencing to a bi-level or tri-level signal and selection from either external input directly or from internal chassis reference bus
  • Connectivity: 2 SDI inputs, up to 4 SDI outputs, reference input, 8x GPI/O, relay bypass version with input 1 bypassed to output 1 on power loss or card removal
  • Dual SDI inputs with auto switching on predefined input state errors — presence, carrier detect and valid CRC/EDH status
  • Standards supported:
    • 3G-SDI to SMPTE ST 424/425 level A & B compatible
    • HD-SDI to SMPTE ST 292/274/296
    • SD-SDI to SMPTE ST 259-C
    • Fiber to SMPTE ST 297-2006C
  • Able to pass all ancillary data with independent HANC and VANC blanking control (VANC blanking is input line selectable)
  • Card-edge LED status indicators and input loss detection — default output of black/pattern/freeze/mute, and input SDI CRC, EDH and ANC data checking and reporting
  • Video proc. amp controls including video gain, offset, hue, RGB gamut legalization and Y/C picture position adjustment
  • Processing for up to 32 channels (at 3G-SDI) of embedded audio present on the incoming SDI stream to remove audio disturbance around the synchronizer wrap and drop points, and provide tracking audio delay
  • Any group of embedded audio may be passed unchanged, processed or blanked, and handles Dolby E and PCM audio present in the same group
  • Built in test pattern generator, two caption generators and audio tone generator
  • 16x user memories, save/recall/rename, and up to 8 GPI/O ports
  • Full RollCall and SNMP compatibility, with up to 70 RollTrack destinations and triggers available for detected module states including: PCM/non-PCM audio, input loss/freeze and reference loss


  • Single mode fiber optic transmitter and receiver options — including SFP HDMI output version to provide a built-in local monitoring output — rear option


Inputs and Outputs

Video Standards Supported
1125 (1080)/50p (A & B), 1125 (1080)/59p (A & B), 1125 (1080)/60p (A & B), 1125 (1080)/25p,1125 (1080)/24p, 750 (720)/50p, 750 (720)/59p, 750 (720)/60p, 750 (720)/30p, 750 (720)/23p, 750 (720)/24p, 750 (720)/25p, 750( 720)/29p, (1035)/29i, (1035)/30i, 1125 (1080)/25i, 1125 (1080)/29i, 1125 (1080)/23p, 1125 (1080)/23sF, 1125 (1080)/24sF, 625 (576)/25i, 525 (480)/29i  

Signal Inputs

  • SDI inputs: 2x
  • Input 1 cable length:
    • Up to 70m Belden 1694A @ 3 Gb/s
    • Up to 160m Belden 1694A @ 1.5 Gb/s
    • >350m Belden 1694A @ 270 Mb/s
  • Input 2 cable length:
    • Up to 60m Belden 1694A @ 3 Gb/s
    • Up to 100m Belden 1694A @ 1.5 Gb/s
    • Up to 100m Belden 1694A @ 270 Mb/s
  • Analog reference:
    • 1x analog reference black (HD tri-level and SD bi-level) and blackburst (SD bi-level), SD bi-level – RS170A
    • HD tri-level – SMPTE ST 240, SMPTE ST 274 and SMPTE ST 296

Fiber Signal Input

  • Up to 2
  • Optical 3 Gb/s HD-SDI, 1.485 Gb/s HD-SDI or 270 Mb/s SD-SDI

Connector/format: LC singlemode
Standard: SMPTE ST 297-2006

Signal Outputs
SDI outputs: x4

Fiber Signal Output

  • Up to 2
  • Optical 3 Gb/s HD-SDI, 1.485 Gb/s HD-SDI or 270 Mb/s SD-SDI

Connector/format: LC singlemode
Standard: SMPTE ST 297-2006

Control Interface
GPI I/O: 8x closing contact via BNC



  • Power: O.K. (Green)
  • CPU: Running (Green flashing)
  • FPGA running: OK (Green flashing)
  • Status: OK (Green), Warning (Yellow), Error (Red)
  • Input 1: OK (Green), Fail (Red)
  • Input 2: OK (Green), Fail (Red)
  • Rx 1: OK (Green), Fail (Red)
  • Rx 2: OK (Green), Fail (Red)

Genlock Mode: Free-run, Lock to reference, Lock to input
Genlock H-Phase: ± 1 H in pixel clock steps
Genlock V-Phase: ± 1 F in 1 line steps
Video H-Delay: 0 – 1 Line in pixel clock steps
Video V-Delay: 0 – 1 Frame in 1 line steps
Video Delay Frames:

  • 0 – 14 frames @ 1080 50/59p level B
  • 0 – 30 frames @ 1080 50/59p level A
  • 0 – 30 frames @ 1080 23/24/25/29/30p
  • 0 – 30 frames @ 1080 25/29/30i
  • 0 – 60 frames @ 720 50/59/60p
  • 0 – 30 frames @ 720 23/24/25/29/30p
  • 0 – 120 frames @ 525 29i
  • 0 – 120 frames @ 625 25i

Audio Delay:

  • Delay add-in bulk, RollTrack, current video: On/Off
  • Bulk manual delay: 0 ms to +1.75s in 1 ms steps
  • Fine manual delay: 0 ms to +250 ms in 0.1 ms steps

RollCall Controls

  • Default video output type: Input, Mute, TPG (Pattern, Captions, Tone), Black
  • Default video output standard: Last Known Good, 1125 (1080)/50P, 1125 (1080)/59P, 1125 (1080)/29i, 1125 (1080)/25i, 750 (720)/59P, 750 (720)/50P, 525 (480)/29i, 625 (576)/25i, Mute, Pattern
  • Valid Input Standard
  • Change-over parameters: No SDI lock, CRC (EDH) error
  • Switch delay: Video 0s to 600s (reversion) and 0fr to 16384fr (trigger condition)
  • GPI/O program: TALLY any input state or warning or set as trigger
  • Pattern select: Color Bars, Black
  • Edit caption: 19 characters available, size and position adjustment
  • Reporting & logging: Input loss; input line standard; EDH error; audio & data presence, change-over status, main video output
  • PCM tone setup
  • Frequency L/R: 100 Hz to10 kHz in 100 Hz steps
  • Channel ident: On/Off
  • Audio monitoring
  • Low-level detect: 0 to -80 dB in steps of 1 dB
  • Signal overload detect: 0 to -80 dB in steps of 1 dB

Other Controls

  • GPI input high/low select (Input 1-8): In Rules (Input 1, Input 2), Priority (None, Input 1, Input 2), Out 1(Input 1, Input 2), FollowOut 1 (On, Off), User Memory 1-16, Input 1 Pattern (On, Off), Input 2 Pattern (On, Off), Input 1 Caption (On, Off), Input 2 Caption (On, Off)
  • GPI level invert: High/Low
  • User memories: 16x Save, Recall, Rename
  • Memory naming: User configurable naming of memories 1 – 16
  • Information window: Video input and output status, audio input status, rules status, network status
  • RollTrack Index: Up to 70 RollTrack destinations
  • RollTrack sources: Unused, User Memory 1-16, GPI/O 1-8 (high/low/not used), Rules Input (1-2), Output 1 (Rules, Input 1, Input 2), Output 1 Std, Input 1 Status (Ok, Fail), Input 2 Status (Ok, Fail), Input 1 Rules Status (Ok, Fail), Input 2 Rules Status (Ok, Fail), Output 1 Pattern (On, Off), Output 1 Captions (On, Off), Input 1 Pattern (On, Off), Input 1 Captions (On, Off), Input 2 Pattern (On, Off), Input 2 Captions (On, Off)
  • Factory default: Resets all module settings to factory specified default values and clears memories
  • Default settings: Resets all module settings to factory specified defaults but does not clear memories
  • Restart: Software restart of the module
  • Module information: Reports following module information: software version, serial number, build number, KOS version, firmware version, PCB version


General Specifications

Electrical: 3 Gb/s SDI, SMPTE ST 424, 1.5Gb/s HD-SDI, SMPTE ST 292, 270 Mb/s SDI, SMPTE ST 259-C
Connector/format: BNC/75Ω panel jack on standard IQ connector panel
Return loss:

  • >-15 dB (270 Mb/s, 1.5 Gb/s)
  • >-10 dB (3 Gb/s)

Output jitter:

  • SD-SDI 0.2 UI (10 Hz)/0.2 UI (1 kHz)
  • 3G/HD-SDI 1.0 UI (10 Hz)/0.2 UI (100 kHz)

GPI I/O (x8) characteristics:

  • Closing contact type with internal source
  • Input threshold voltage: 1V, typical

Module power consumption:  

  • IQSYN5000-1B3 14.5PR Max.
  • IQSYN5001-1B3 15PR Max.
  • IQSYN5003-2B3 15PR Max.



3G/HD/SD-SDI Synchronizer. 2 inputs, 4 outputs, external and internal frame reference selection, 2 GPI/Os.


3G/HD/SD-SDI Synchronizer with relay input bypass. 2 inputs, 4 outputs, external and internal frame reference selection, 2 GPI/Os.


3G/HD/SD-SDI Synchronizer. 2 inputs, 4 outputs, external and internal frame reference selection, Fiber SFP Tx/Rx, Ethernet port, 8 GPI/Os.

Fiber SFP Options

FC1-13T1 Single 1310 nm Tx

FC1-13T2 Dual 1310 nm Tx

FC1-R1 Single Rx

FC1-R2 Dual Rx

FC1-13TR Transceiver 1310 nm/Rx



FC1-HDMI2 HDMI Tx with 2m cable

CWDM Tx – Wavelengths available on request 

Note: Fiber SFP type must be ordered in addition to the module.

For more details on enclosure types please refer to IQ Modular Enclosures datasheet.



IQSYN50: 3G/HD/SD-SDI Frame Synchronizer Datasheet

The IQSYN50 from Grass Valley, a Belden Brand, provides frame synchronization for HD-SDI at 3 Gb/s or 1.5 Gb/s, or SD-SDI 270 Mb/s with 32-channel embedded audio handling



Further documents

Already know what you're looking for? Click the link below to access our full documentation library

Visit Library
Go back to top