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HD/SD Video Delay / Time Shift Processor

In live shows, there is invariably the need to time-shift various feeds that contribute to the final production. This may be required to provide delays to accomplish profanity censorship, contribution backhaul delay mis-match compensation or compliance for other contractual obligations.

The Evertz HDSD9545DLY-PRO Time shifting delay processor has been designed to give an operator complete control over the program content being broadcast to air. This product enables the operator to insert the desired time delay via a front panel control and display panel. There are two program paths which are HD and SD compatible.

The main program feed will usually be focused on the main detailed action. Both channels are delayed by the same amount. If an unscheduled switch to an alternate source is required, the operator has only to hit one remote button to cause the program video and audio output to be clean switched to the alternative back-up channel. The output can be returned to the main program content without interruption to the video, or pops and clicks in the audio.

The delay can be adjusted from a minimum 2 frame program or to a maximum of 40 seconds of 1.5Gb/s HDTV or 240 seconds for SDTV (with the HD40 option). This max delay can be allocated to primary and secondary paths as per the user.


  • HD or SD SDI compatible
  • Embedded Audio and Discrete (4ch AES) Audio Support
  • Monitoring outputs of delayed program and delayed backup can be provided
  • Selectable quad split monitoring outputs
  • Safe input frame capture
  • Clean transition between program and backup feed
    • SoftSwitch™ audio (patent pending)
    • Clean switch video
  • Non-PCM audio / Dolby-E® support (in non-SoftSwitch™ mode)
  • Supports program video blur features
  • Relay bypass protection for video and audio
  • Delay memory is solid state (no moving parts)
  • No hard drive to fail or maintain
  • Contact closure inputs for bypass triggering
  • Programmable pre-trigger reaction time
  • 24 seconds HD or SD delay on HDSD9545DLY-PRO model
  • 40 seconds HD or 240 seconds SD delay on HDSD9545DLY-PRO-HD40 model
  • Delay is user allocated between primary & secondary backup paths
  • Dual power supplies
  • Minimum 2 frame PGM delay and 2 frame safe delay
  • VistaLINK® control for device configuration and status monitoring


Serial Digital Video Input

Standard SMPTE ST 292-1 (1.5Gb/s) - 1080i/59.94, 1080i/50, 720p/59.94
SMPTE ST 259-C (270Mb/s) - 525i/59.94, 625i/50
Embedded Audio SMPTE ST 299-1 (HD), SMPTE ST 272 (SD)
Number of Inputs 2
Connector BNC per IEC 61169-8 Annex A.
HD Video Stds Automatic up to 50m with Belden 1694A or equivalent cable
SD Video Stds Automatic up to 250m with Belden 8281 or equivalent cable
Return Loss > 15dB up to 1.0Gb/s, > 10dB at 1.5Gb/s

Serial Digital Video Output

Standard Same as Input
Number of Outputs 5 outputs (2 copies of Output A)
Input A bypass protected to output A1
Connector BNC per IEC 61169-8 Annex A
Signal Level 800mV nominal
DC Offset 0V ±0.5V
Rise and Fall Time
HD Video Stds 200ps nominal
SD Video Stds 650ps nominal
Overshoot < 10% of amplitude
Wide Band Jitter < 0.2UI
Return Loss
A1 > 10dB up to 1.5Gb/s
A2, B, C, D, E > 15dB up to 1.5Gb/s
Output Phase 0 to a full frame of offset - separate H and V phase adjustments

Video Reference

Type NTSC or PAL Colour Black 1V p-p
Composite Bi-level sync (525i/59.94 or 625i/50) 300mV
HD Tri-level Sync
Connectors BNC per IEC 61169-8 Annex A
Termination High impedance loop through or High impedance non-looping or 75Ω non looping (jumper selectable)

AES Audio Input

Standard SMPTE ST 276 single ended AES
Number of Inputs 2 Groups of 4
Connector BNC per IEC 61169-8 Annex A
Signal Level 1V p-p ±10%
Return Loss > 25dB up to 6MHz

AES Audio Output

Standard SMPTE ST 276 single ended AES
Number of Outputs 3 buses, 4 outputs per bus
Safe AES Inputs bypass protected to AES A outputs when bypass relay option is installed
Connector BNC per IEC 61169-8 Annex A
Signal Level 1V p-p
Return Loss > 35dB up to 6MHz
Reference From Video Reference

GPI Control Port

Number of Inputs 8 opto-isolated, active high or active low, programmable functions
Number of Outputs 4 sets of relay contacts, normally closed, programmable functions
Relay Max Current 1A at 30V DC


Maximum Total Delay Configurable between live and safe inputs
HDSD9545DLY-PRO 24 seconds of HD or SD delay
HDSD9545DLY-PRO-HD40 40 seconds of HD delay or 240 seconds of SD delay


Voltage Auto ranging 100V - 240V AC, 50/60Hz - dual redundant power supplies
Fuse Rating 250V, 1A time delay
Power 60 Watts
Safety TÜV Listed, complies with EU safety directives
EMI/RFI Complies with FCC Part 15 Class A regulations, Complies with EU EMC directive


Dimensions 19" W x 3.5" H x 17.75" D
(483mm W x 89mm H x 451mm D)
Weight 8lbs (3.5kg)

Ordering Information

HDSD9545DLY‑PRO HD/SD Video and Audio Delay/Profanity Protection System with 24 seconds of HD or SD delay
HDSD9545DLY‑PRO‑HD40 HD/SD Video and Audio Delay/Profanity Protection System with 40 seconds of HD delay or 240 seconds of SD delay