The 7743DLY-HD is a full function HD/SD-SDI Video Delay module designed for applications such as: satellite uplink, signal re-entry on master control inputs, at cable headends, mobile vehicle outputs, broadcast transmitter inputs, virtual sets and matching delays caused by multi-channel audio compression.

The 7743DLY-HD can act as a delay for SD video (SMPTE ST 259) or HD video (SMPTE ST 292-1).

The 7743DLY-HD is capable of up to 3.2 seconds of delay for HD and up to 16.5 seconds of delay for SD. With the broadcast environment in mind, the modules feature bypass relay protection on output.

The 7743DLY-HD occupies two card slots 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.


  • Full signal delay capability including VBI and ANC DATA for SMPTE ST 292-1 (1.5Gb/s) signals
  • Also supports full signal delay capability including VBI for SMPTE ST 259 (270Mb/s) signals
  • Delay programmable in video units (frames, lines and samples) or as time units (seconds)
  • Auto senses video standard
  • Bypass relay for program path protection on power loss
  • Up to 3.2 seconds delay for HD
  • Up to 16.5 seconds delay for SD
  • Card edge controls operate on screen menu system to program delay settings
  • Input circuit features a line buffer which is suitable for "de-glitching" hot switches on upstream equipment (very useful for HD equipment)
  • 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

Download Datasheet


High Definition Serial Digital Video
StandardST 292-1 (1.5GB/s) or SMPTE ST 259 (270MB/s)
ConnectorBNC per IEC 61169-8 Annex A
EqualizationAutomatic to 75m @ 1.5GB/s with Belden 1694A or equivalent cable
Return Loss> 15dB up to 1.0GB/s
> 10dB up to 1.5GB/s (with relay)
Standard Definition Serial Digital Video
StandardSMPTE ST 259-C (270MB/s)
ConnectorBNC per IEC 61169-8 Annex A
Return Loss> 15dB up to 270MB/s
Serial Video Outputs
Number of Outputs1 with relay bypass, 1 additional output
ConnectorBNC per IEC 61169-8 Annex A
Signal Level800mV nominal
DC Offset0V ±0.5V
Rise And Fall Time200ps nominal (HD), 740ps nominal (SD)
Overshoot< 10% of amplitude
Return Loss> 15dB up to 1.5GB/s (HD), > 15dB up to 540MB/s
Wide Band Jitter< 0.2UI
Genlock Input
TypeHD Tri-level Sync
NTSC or PAL Color Black 1V p-p, or
Composite bi-level sync (525i/59.94 or 625i/50) 300mV
ConnectorBNC per IEC 61169-8 Annex A
Termination75Ω (jumper selectable)
Minimum Delay65.5ms (1770 samples) for standard definition, 37.7ms (2800 samples) for high definition
Maximum DelayApprox. 16.5s for standard definition, approx. 3.2s for high definition
Voltage+12V DC
Power20 watts
EMI/RFIComplies with FCC Part 15, Class A
EU EMC Directive
Number of Slots2
Stand Alone Enclosure
Dimensions14" L x 4.5" W x 1.9" H
(355mm L x 114mm W x 48mm H)
WeightApprox. 1.5lbs (0.7kg)

Ordering Information

7743DLY-HDHD/SD-SDI Video Delay
Ordering Options
NotesRear plate must be specified at time of order - eg: [model]+3RU
Rear Plate Suffix
+SAStandalone Enclosure Rear Plate
+3RU3RU rear plate for use with 350FR, 7700FR-C, 7800FR or 7801FR Multiframes
350FRPortable Multiframe which holds 7 single slot modules
7700FR-C3RU Multiframe which holds 15 single slot modules
7800FR3RU Multiframe which holds 15 single slot modules
7801FR1RU Multiframe which holds 4 single slot modules
S7701FR7700 Series Standalone Enclosure
7800FCVistaLINK® Frame Controller
CP-2116E-HSystem Control Panel, One Touchscreen LCD and 16 LCD Buttons
CP-2232ESystem Control Panel, 2RU, Two Touchscreen LCDs and 32 LCD Buttons