Intraplex® HD Link™

Digital 950 MHz STL and Data Gateway

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OVERVIEW

The next generation of digital STL

Our challenge: to design a studio-to-transmitter link (STL) for your most demanding 950 MHz applications — one as reliable and robust as Intraplex® T1 and IP audio links. Digital STL manages much more than audio, so installation and configuration need to be straightforward, not a science project. Data should not be optional, requiring additional boxes and complexity. Your STL should be ready, out of the box, for AM, FM and HD Radio™, as well as future multimedia applications.

Earlier digital STLs were not designed for IP data transport. Adding IP data to them required optional modules and external add-ons, and many engineers working on HD Radio installations reported spending much time and money trying to eliminate glitches.

Our solution: HD Link is designed to manage all HD Radio™ transport scenarios, regardless of where you place your importer and exporter. Its two prioritized Ethernet paths give preference to HD Radio™ data over control and other LAN/WAN data. It supports both UDP and TCP, and even handles the switching of TCP return packets over asymmetric IP paths with plug-and-play simplicity.

HD Link offers RF power to spare, an integrated IP gateway with sophisticated data handling capabilities, and multiple channels of audio. The intuitive front panel and remote interfaces tap into the most complete feature set of any microwave STL, yet take less time to configure. It can even operate on both RF and IP simultaneously, and allows automatic backup of all services from one to the other.

Intraplex is broadcasting’s first choice for rock-solid, full-time operation of T1 STLs. With HD Link, you can now count on the same dependable performance, superior support and long-term value for your microwave links.

Main Features of Intraplex® HD Link™

Powerful, reliable RF performance

Up to 5 W of RF power
Harris Broadcast-designed transmitter and receiver with 200, 250, 300, 375 or 500 kHz of RF bandwidth
Low-density parity check (LDPC) coding advanced error correction — requires less receive signal than Reed-Solomon to achieve an equivalent bit error rate (BER), a critical parameter for glitch-free HD Radio performance
State-of-the-art modulation technology operates at 32, 64, 128 or 256 QAM, providing more than 3 Mb/s throughput under optimal conditions
Built-in circulator provides a high degree of isolation and VSWR protection

Designed for data

Integrated IP channel with up to 1.5 Mb/s throughput for HD Radio (importer-to-exporter or exporter-to-exciter)
At least three times the nominal IP data throughput of other digital STLs
Does not require an external adapter to work with an external TCP return path — suitable for use over private and public networks
Capable of taking advantage of available IP audio paths to provide integral backup in the event of radio link failure
Two prioritized Ethernet ports — high priority for HD Radio traffic, low priority for control data and LAN traffic
Each main program channel includes an RS-232 asynchronous data channel, up to 9600 b/s

Superior multichannel audio performance

One or two stereo main program channels, each available with linear uncompressed or Enhanced apt-X® compressed audio
User-selectable 32, 44.1, or 48 kHz sample rates—transports 15, 20 or 22 kHz audio
Two monaural, 7 kHz audio channels with G.722 coding available for AM, radio reading services, SCA, EAS and other auxiliary audio applications

Easy setup and reliable operation

Advanced Web browser user interface and SNMP remote control
Front-panel Ethernet port for access to Web GUI and diagnostics
USB port for saving configurations and updating software
FTP access for remote software uploads
User-configurable control input and alarm output contacts

Convenient connections and display

Intuitive front-panel interface
XLR AES/EBU digital and L/R analog input/output connectors
Headphone jack on the receiver for audio monitoring
AES/EBU sync port on the receiver
LCD level displays for all audio programs at each end
Analog level outputs for forward power and reflected power (on transmitter unit) and for received signal level and signal-to-noise (on receive unit)
Optional main/alternate interface for redundancy switching

Main Features of Intraplex® HD Link™

Powerful, reliable RF performance

Up to 5 W of RF power
Harris Broadcast-designed transmitter and receiver with 200, 250, 300, 375 or 500 kHz of RF bandwidth
Low-density parity check (LDPC) coding advanced error correction — requires less receive signal than Reed-Solomon to achieve an equivalent bit error rate (BER), a critical parameter for glitch-free HD Radio performance
State-of-the-art

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