Broadcast Links

The VialiteHD range of fiber optic links enable indoor and outdoor broadcast operators to transport multiple RF feeds between cameras, wireless microphones and production communications (such as IFBs over optical fiber).  The ultra-wide dynamic range allows for multiple signals to be transported simultaneously.

The Broadcast links offered are:

  • Green OEM Link covers 100MHz-1GHz with voltage protection
  • UHF/VHF 10MHz-1GHz
  • DVB-T 470-900MHz with input voltage protection.

Main features and benefits:

  • The Green OEM Link (previously known as the Broadcast module) is an HD replacement for both the 1GHz and DVB-T Classic OEMs
  • Input Voltage Protection ensures stray voltages from other equipment does not damage the links
  • WDM for diverse antennas on a single fiber
  • Wide dynamic range allows multiple cameras or microphones of varying powers over a single link
  • Standard link 1m to 10km
  • 5-year warranty as standard


Product Inquiry
Broadcast Links

Ultra-wide dynamic range

The ultra-wide dynamic range allows for multiple cameras or microphones to be transmitted down a single fiber, even at varying signal levels.  This allows for many cameras or audio devices – at varying distances from the antennas – to be transmitted simultaneously.

 

Green OEM Link

Form-fit and function replacement for ViaLite’s DVB-T and UHF/VHF Classic OEM links.  The Green OEM Link was previously known as the Broadcast module.

The Green module has exceptionally low power usage at just Tx – 1.1 W and Rx – 0.8 W.  This reduced power consumption is particularly important within the broadcast market, with wireless mics and cameras typically being battery-powered. The lower consumption means cheaper, smaller and lighter batteries with a shorter battery life can be used.

 

CWDM and WDM

WDM allows for diversity antennas to be transmitted down a single fiber.  CWDM allows for multiple antennas to be transmitted back via a single fiber or to be integrated into an existing fiber data network.

 

Inbuilt bias tee

The fiber optic transmitter can be used to power the antenna / down-converter via a voltage feed from the RF input.

 

Further features and benefits:

  • Enclosures available for outdoor installations
  • Minimal carrier to noise degradation
  • Frequency response independent of path length
  • Low cost compared with coaxial cable
  • Non-conductive and immunity to electrical interference.

ViaLite Green OEM Link 360 Model

The broadcast industry has adopted ViaLiteHD fiber optic equipment for remoting wireless production.  Operators rely on ViaLiteHD fiber link equipment to produce high quality video and voice output (including intercom) over single-mode optical fiber.

 

Outdoor Live Broadcasting

ViaLiteHD optical fiber link products are fast becoming the ‘de-facto’ transport platform used throughout the world by broadcasters and program producers to gather ‘breaking-news’ stories and cover live sporting events.  Outdoor broadcast (OB) teams now integrate a fiber back-haul link into SNG and ENG platforms because it is lightweight – making it easier to rig and de-rig field-based equipment quickly.

The OB community quickly realized and subsequently exploited the fact that single-mode optical fiber has the capacity to simultaneously relay multiple HD video, voice (intercom) and data channels over longer distances.  Hybrid SMPTE cable is used when power is required at the remote receiver.

 

Next Generation Roaming Cameras

ViaLiteHD fiber converters are also playing an important role in the development of the wireless camera and radio microphone outdoor broadcasting suites.  This revolutionary Outdoor Broadcast (OB) platform gives the cameraman the freedom to roam and captures an event’s unique atmosphere, seamlessly, across temporarily deployed cellular diverse network architecture.  – Here ViaLiteHD equipment is integrated between the down-converter and the media receiver in the OB truck (front of house), discretely hidden away from view.

Broadcast 100MHz-1GHz link hardware formats

– Green OEM Link

The Green module has exceptionally low power usage at just Tx – 1.1 W and Rx – 0.8 W and replaces the Classic (legacy range) module.

 

UHF/VHF 10MHz-1GHz and DVB-T 470-900MHz broadcast link hardware formats

These links are available in several formats:

– Single Rack Chassis Card / Dual rack chassis card (Rx/RX, Tx/Tx or Rx/Tx)

A fully populated 19” 3U ViaLiteHD rack chassis supports up to 26 links and accepts 13 RF cards, plus an SNMP card and dual power supply modules.  A 1U chassis accepts three RF cards or two RF cards with an SNMP card.

– Blue OEM Link

The ViaLite standalone Blue OEM Link offers a compact, single link solution.

– Blue2 Link

The Blue2 Link is a dual-solution OEM which can be setup as 2x transmitters, 2x receivers or a transceiver, as required.

– Yellow OEM Link

The Yellow OEM Link has been designed for system integrators and equipment manufacturers to build the link into their own designs.

A range of support modules and accessories is also available, including indoor rack chassis units and weatherproof outdoor enclosures.

See our hardware formats guide for more information.

 

Options include:

The fiber optic links have options for either 0dB or +9dB link gain.  Plus optical connector options such as FC, E2000 and SC.

Green OEM Link

RF Performance Characteristics

 Broadcast 50ΩBroadcast 75Ω
Frequency range100-1000MHz100-1000MHz
Impedance, RF connector50Ω SMA75Ω MCX
VSWR1:1.5 (typ)1:1.5 (typ)
Link gain (TX/RX)0dB (-15 / +15) a 0dB (-15 / +15) a
Flatness (full band)±0.3dB (typ) a ±0.4dB (typ) a
Gain stability0.25 @ 24hrs dB (typ)0.25 @ 24hrs dB (typ)
P1dB input2dBm (typ) a k 2dBm (typ) a k
IP3 input 14dBm (typ) a k 14dBm (typ) a k
Noise figure 23dB (typ) a k 23dB (typ) a k
SFDR 110dB/Hz ⅔ (typ) a 110dB/Hz ⅔ (typ) a
Power consumptionTx: 1.1W (typ), Rx: 0.8W (typ)Tx: 1.1W (typ), Rx: 0.8W (typ)
Laser current monitor25mV/mA25mV/mA
RLL monitor scale150mV/dB150mV/dB
RLL monitor output voltageVoltage proportional to P optical , 4V @ 4.5dBmVoltage proportional to P optical , 4V @ 4.5dBm

a nominal input power @ 0dB optical loss
k Measured @ 500MHz
All tests @ 25°C after 15 minutes warm-up

 

Optical Performance Characteristics

 Broadcast 50Ω & 75Ω
Laser typeSingle mode distributed feedback (DFB) laser
Optical connectorE2000/APC (SC/APC or FC/APC optional) with flying lead – standard length 260mm (option to specify)
Optical wavelength1310nm ± 20nm (1550nm optional)
Optical power output4.5dBm (typ)

 

Temperature Characteristics

 Broadcast 50Ω & 75Ω
Operating temperature-10degC to +50degC
Storage temperature-40degC to +70degC

 

DVB-T Link

RF Performance Characteristics

 DVB-T link
Frequency Range470 – 860MHz
Impedance/RF Connector75Ω BNC
Tx gain adjustment range15.5dB (typ)
Gain adjustment step size Rx and Tx0.5dB (typ)
Flatness, full band±0.4dB (typ)
P1dB input2dBm (typ)
Noise figure at default gain23dBm (typ)
SFDR110dB/Hz 2/3 (typ)
LNA powerInternal 12V @ 300mA (fused)

 

Optical Performance Characteristics

 DVB-T link
Laser TypeDFB (Distributed Feedback)
Optical Wavelength1310nm ± 20nm (1550nm/CWDM options)
Optical Power Output 4.5dBm (typ)

 

Temperature Characteristics

 DVB-T link
Operating Temperature-20 ° C to +50 ° C
Storage Temperature-40 ° C to +70 ° C

 

UHF/VHF Link

RF Performance Characteristics

 UHF/VHF link
Frequency range10-1000MHz
Impedance, RF connector50Ω SMA
VSWR1:1.5 (typ)
Link gain (Tx/Rx)+9 (-11 / +20)dB (nom) a h
Flatness, fullband±0.3dB (typ) a h
Gain stability0.25 @ 24hrs dB (typ)
P1dB input-1dBm (typ) a k
IP3 input11dBm (typ) a h k
Noise figure19dB (typ) a h k
SFDR110dB/Hz ⅔ (typ) a
Maximum input power15dBm (min)

a nominal input power @ 0dB optical loss
h default gain setting
k Measured @ 500MHz

 

Optical Performance Characteristics

 UHF/VHF link
Laser typeDFB
Optical wavelength1310nm ± 20 nm (1550nm/CWDM options)
Optical power output4.5dBm (nominal)

 

Temperature Characteristics

 UHF/VHF link
Operating temperature-20degC to +50degC
Storage temperature-40degC to +70degC

Green OEM Link datasheet  (version HRx-xx-xBC-1)

DVB-T Link datasheet  (version HRx-Dx-DS-2)

UHF and VHF Link datasheet  (version HRx-Nx-DS-2)

Blue OEM datasheet  (version HRx-xx-xM-1)

Blue2 Link datasheet  (version HRx-xx-xP-1)

Yellow OEM datasheet  (version HRx-xx-xN-1)

ViaLiteHD RF Link Handbook  (version HRx-HB-6)

You may also be interested in:


Share: Print: Newsletter: