Harris Cd Link Stl Manual Transmission
Harris introduces new IP networking capabilities to its Intraplex HD Link™ studio-to-transmitter link (STL) system heading into the 2011 Radio Show (Hyatt. “The next-generation DVB-T2 digital terrestrial transmission standard has gained popularity and momentum as global broadcasters seek new opportunities to diversify.
So I have worked out repurposing an uncompressed Harris CD Link to replace my old 6010 Analog STL. I have a couple of questions. Obviously, I could go AES into the STL, set the gain low, so it wouldn't clip and put my 8300 at the transmitter. Option 2 is buying a stereo generator (I saw Omnia makes one, the irony), and leaving the 8300 at the studio, with AES L/R going into the STL and generating the stereo signal itself at the transmitter site. At any rate, I will need to pass some data over the data channels to get RDS to my site. Do any of you guys have any suggestions on which of these two routes might be better and why?
I have a station with the exact same scenario. They use an Ariane Sequel to provide AES into the CD link and the 8300 is located at the transmitter (always best place for it), then composite into the transmitter. The Ariane protects the STL from overshoot. On the 8300, I have the AGC gate as far up as it will go, -15 I believe, and it sounds great. You can try to disable the AGC in the 8300, but for some reason gating the AGC out sounds better to my ears. The station has great ratings and is a country format.
So I have worked out repurposing an uncompressed Harris CD Link to replace my old 6010 Analog STL. I have a couple of questions. Obviously, I could go AES into the STL, set the gain low, so it wouldn't clip and put my 8300 at the transmitter. Option 2 is buying a stereo generator (I saw Omnia makes one, the irony), and leaving the 8300 at the studio, with AES L/R going into the STL and generating the stereo signal itself at the transmitter site. At any rate, I will need to pass some data over the data channels to get RDS to my site. Do any of you guys have any suggestions on which of these two routes might be better and why? I had thought about the Arianne unit, although it seems hard to find a price on it.
All of their 'retailers' on the site don't show it in the online catalogs. I that thought about Plan C (with the Arianne). Did you have another unit in mind? I was also thinking that since I had no noise floor, I could just have the AES pulled way back going into the cd link, giving me lots of headroom for when the mic or a caller hits.I come out of the board AES, there will be no conversion to analog. I think I am just going to go board to CD Link and not worry about leveling until it gets out to the transmitter and optimod. Well, I wouldn't say that there's 'no noise floor'. Even digital has a noise floor, usually about the same as high quality professional analog gear, maybe a couple dB better.
Most likely -96dBfs or close to it if it's 16 bit audio. So the lower you run your average levels, the higher your noise floor. If you run your levels peaking mainly at -20dB, that now becomes your reference level. So, your noise floor is now 76dB below your audio, instead of close to 93dB (allowing for 3dB of headroom after the leveler/limiter).
If you ran at -30dB to have headroom, then your noise floor is now only 66dB below your audio, about that of a reel to reel running 15ips or a Dolby C CrO2 cassette. You really should put a leveler or limiter of some sort in front of the STL. Kamen Rider Blade Driver Flash. The digital Compellor will work fine if you don't have the cash for the Ariane (that would be my #1, 2 and 3 choice). Clipping the digital input of the STL will sound NASTY on the air. Running your average levels too low will just bring the noise floor back up and negate the advantage of the quieter digital path.
Well, I wouldn't say that there's 'no noise floor'. Even digital has a noise floor, usually about the same as high quality professional analog gear, maybe a couple dB better. Most likely -96dBfs or close to it if it's 16 bit audio. So the lower you run your average levels, the higher your noise floor. If you run your levels peaking mainly at -20dB, that now becomes your reference level.
So, your noise floor is now 76dB below your audio, instead of close to 93dB (allowing for 3dB of headroom after the leveler/limiter). If you ran at -30dB to have headroom, then your noise floor is now only 66dB below your audio, about that of a reel to reel running 15ips or a Dolby C CrO2 cassette. You really should put a leveler or limiter of some sort in front of the STL. The digital Compellor will work fine if you don't have the cash for the Ariane (that would be my #1, 2 and 3 choice). Clipping the digital input of the STL will sound NASTY on the air. Running your average levels too low will just bring the noise floor back up and negate the advantage of the quieter digital path.Great post. I can probably get the Arianne.
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. Architecture And Construction In Steel By Alan Blanc Pdf Free there.
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.