Used Snell IQSYN21 HD-SDI Frame Sync with Audio EmbedderUsed Snell IQSYN21 HD-SDI Frame Sync with Audio Embedder

Used Snell IQSYN21 HD-SDI Frame Sync with Audio Embedder

This Used Snell IQSYN21 HD/SD-SDI Frame Synchronizer with Audio is in a very good condition and in full working order as well it comes with 3 months warranty. We have multiple units available all in full working order and in very good condition.

£250.00 exc. VAT


SKU: IQSYN21 Categories: , Tag:

Please note this is an Used Snell IQSYN21 HD/SD-SDI Frame Synchronizer with Audio. ES Broadcast carefully tests all used equipment prior to sale, and offers a three-month warranty. Images shown are for illustrative purposes only and may not be of the specific model offered for sale. Accurate pictures of this model are available on request.

Snell IQSYN21 HD/SD-SDI Frame Synchronizer with Embedded Audio Processing

The IQSYN21 provides synchronization for HD-SDI 1.5 Gbps or SD-SDI 270 Mbps signals with 16-channel embedded audio processing including automatic synchronization of Dolby E signals. Using agile synchronization that is router-switching-tolerant makes this module ideal for all HD/SD-SDI lines input applications. A video processing amplifier provides complete control over the video levels, and audio processing features include automatic Dolby E re-alignment, PCM tracking audio delay, channel level routing and mixing.

The IQSYN21 is also able to directly pass audio channel status information to handle upstream switching of SDI containing PCM and Dolby E embedded audio.


  • Agile HD/SD-SDI synchronizer with up to 11 frames of video delay and tracking audio delay
  • Handles up to 16 channels of embedded audio present on the incoming SDI stream including ancillary cleaner for removal of unused ancillary data
  • Embedded Dolby E support – pair routing and automatic re-alignment and synchronization to the video frame boundary
  • Dual selectable HD/SD-SDI inputs with auto switching
  • Agile synchronizer locking capable of handling mis-timed inputs of up to 5 lines without output video disturbance (SMPTE RP168 compliant)
  • Standards supported:
  • HD-SDI to SMPTE 292M/274M/296M
  • SD-SDI to SMPTE 259M-C
  • Capable of referencing to a bi-level or tri-level reference for HD timing
  • Precision wide range genlock adjustment allowing you to time any HD/SD-SDI signal to pixel accuracy
  • Independent horizontal and vertical ancillary data blanking
  • Tracking audio delay which seamlessly tracks the internal video delay and external RollTrack or GPI inputs
  • 2 independent audio delay controllers including selectable fixed delay and
  • RollTrack/GPI tracking delays for each (either selectable for eight pairs)
  • Any group of embedded audio may be passed unchanged if not selected for processing or blanked

Inputs and Outputs
Signal Inputs
SDI Inputs 2x HD/SD-SDI
Electrical 1.5 Gbps HD-SDI, SMPTE 292M 270 Mbps SDSDI, SMPTE 259M-C
Connector / Format BNC / 75 Ohm panel jack on standard Snell connector panel
Input Cable Length Up to 140 m Belden 1694A @ 1.5 Gbps (40 m input cable length and 35 m output cable length, relay bypass version. Belden 1694A @ 1.5 Gbps)
Up to 275 m Belden 1694A @ 270 Mbps
Note: Specified cable lengths are a guide only. Exact cable length performance will depend on the quality of the cable used, the SDI video rate and the system setup. It is advisable not to cascade modules using the relay rear version although it may be possible if the interconnecting cable lengths are kept to an absolute minimum.
Return Loss >-15 dB
Relay Bypass Versions
Input Return Loss >-8 dB (When not in BYPASS mode)
Output Return Loss >-8 dB (When not in BYPASS mode)
Reference Input
Analog Reference Input 1 x Analog Reference with passive loop-through SMPTE 240/ 274M and RS170A
Electrical Black (HD tri-level and SD bi-level) and Black Burst (SD bi-level)
SD bi-level – RS170A, HD tri-level – SMPTE 240M, 274M and 296M
Connector / Format BNC / 75 Ohm panel jack on standard Snell connector panel
Analog Reference Return Loss SD bi-level > -40 dB to 5.5 MHz
HD tri-level > -35 dB to 30 MHz
Signal Outputs
SDI Outputs 3x / 4x HD/SD-SDI
Electrical 1.5 Gbps HD-SDI, SMPTE 292M 270 Mbps SDSDI, SMPTE 259M-C
Connector/Format BNC / 75 Ohm panel jack on standard Snell connector panel
Return Loss >-15 dB
Control Interface
GPI Up to 2x GPI (I/O configurable)
Electrical TTL-compatible, active-low driven
Connector / Format BNC / 75 Ohm panel jack on standard Snell connector panel
Power OK (Green)
CPU Running OK (Green flashing)
FPGA Running OK (Yellow flashing)
Status OK (Green), Warning (Yellow), Error (Red)
Input 1 OK (Green), Loss (Off)
Input 2 OK (Green), Loss (Off)
SDI Err Error (Red)
Reference Lock OK (Green)

Video Controls
Select Primary Input 1 / 2 / Auto with user configurable rules
Output Standard Select, Follow Input, Follow Reference
Standards List Select video standards for automatic follow
Black Level ±200 mV in steps of 1 mV
Master Video Gain ±6 dB in steps of 0.1 dB
Y Gain ±6 dB in steps of 0.1 dB
Cb/Cr Gain ±6 dB in steps of 0.1 dB
Pattern Select 100% Color Bars, 75% Color Bars, SMPTE Bars, Tartan Bars, Black Field, Pluge Ramp, H Sweep, Pulse and Bar, Burst
Blank Ancillary Data Blank All, Blank HANC, Pass All, Pass when Output Standard equals Input Standard
VBI Line Blank Individual lines for each video standard
Manual Freeze On/Off
Freeze Field/Frame
Video Channel Control Mono, Y/C blank
Reference Select External with phasing, Input Video with delay (Units: Lines and Pixels), Free-run
Delay Timing Delay Frames
Default Video Output Pattern / freeze / black / run through / redundant input
Auto Backup Rules 5 rules with Video presence and standard, Video Errors, Audio presence, GPI actions and Time Delays

Audio Controls
Embedded Audio Types PCM (to AES3)/Data (SMPTE 337M inc. Dolby E)/Mixed (Passes any channel status information present)
Channel Routing Output channels routed from SDI (16 embedded channels from any group), test tone and silence
Output Side Control Proc.- Gain and Polarity
Independent Gain, Mute, and Polarity control over embedded output channels. +12 dB to -36 dB in 0.1 dB steps
Coarse Manual Delay 1 and 2 Up to +2 s in 0.25 ms steps, common to any selected pairs
Fine Manual Delay 1 and 2 Up to +0.25 ms in 5 μs steps, common to any selected pairs
Dolby E Delay (Alignment) Auto/Manual
Variable Audio Delay 1 and 2 Up to 0.5 s from RollTrack + GPI Delay
Pair Based Delay Sources Selectable video synchronizer delay + delay control 1 or 2
Embedder Priority Normal distribution/audio prioritized
Embedded Group Pass/Blank/Embed
Dolby E Auto Line Selection Define Dolby E embed line for each video standard
Tone Setup 1 kHz, 2 kHz, 4 kHz, mute @ -20 dBFS or -18 dBFS

Other Controls
GPI Configuration Not Used, as an output, as an input, pulse width timer + invert
GPI Input Activates on contact closure: Freeze, Pattern, Black, Blank ANC, Mono Y only, Mono CbCr only, Use I/P and Ext. reference, Select Input 1 / 2 and Backup
GPI Output Produces an output for: Input 1 / 2 OK, Reference OK Freeze, Pattern, Black, Monochrome, Input 2 Selected
User memories 16x Save / Recall / Rename

RollCall Features

Logging Input Status, ANC, EDH, CRC Errors and standard, Reference Status and Standard Video output status and standard, Embedded audio input status and type (pairs 1-8), Embedded Dolby E output timing status (pairs 1-8)
RollTrack Controls Source, Address, Command, Status, Sending
Roll Track Sources Internal or detected device states that trigger the sending of RollTracks: Unused, Video Delay, Input Present /Input Loss, Reference OK / Loss, Output Freeze / Unfreeze, In 1/2 Select, GPI1/2 High / Low / Inactive, Embedded Audio Present/Loss (Pairs 1-8), Out (video standards)


Video Standards 750(720)/60p, 1125(1080)/30i
750(720)/59p, 1125(1080)/30sF
750(720)/50p, 1125(1080)/29i
1125(1080)/30p, 1125(1080)/29sF
1125(1080)/29p, 1125(1080)/25i
1125(1080)/25p, 1125(1080)/25sF
1125(1080)/24p, 1125(1080)/24sF
1125(1080)/23p, 1125(1080)/23sF
525(480)/29i, 625(576)/25i
Minimum Delay 1 line
Video Delay 1 line to 1 frame + 1line (synchronizing)
1 line to 1 frame – 1 pixel (delay mode)
Synchronizer Hysteresis Window HD – 4 μs / SD – 11 μs
Reference Source External – HD tri-level (HD output only), SD bi-level, Input Video syncs
Genlock Adjustment Up to ±1 frame in steps of 1 pixel
Embedded Audio Handling HD – 24-bit synchronous 48 kHz to SMPTE 299M / SD – 20-bit synchronous 48 kHz to SMPTE 272MA
Embedded Audio Delay Minimum 3 ms (PCM), 0.75 ms (Data), Maximum 2.5 s
Channel Status Information Handled and checked

Power Consumption
Module Power Consumption 10 W (max.) / 10.5 W (max.) – Relay Bypass Version

Used Snell IQSYN21 HD-SDI Frame Synchronizer with Audio Embedder Processing
Used Snell IQSYN21 HD-SDI Frame Synchronizer with Audio Embedder Processing