STL HD
T1 STL System
Whether you’re looking for simple one-way audio transport or multi-channel FM plus HD Radio, control data, and off-premise extension telephones, there’s an Intraplex® STL HD package that’s right for you!
STL HD is a modular family of products designed to let you customize your T1 STL with exactly the features and circuits you require. The system transports crystal-clear digital audio over any distance or terrain, and can be used on all types of T1 links, including leased telco T1 circuits, microwave, spread spectrum radio and fiber optic. STL HD systems can be equipped to carry one-way or full-duplex stereo audio, with or without compression. STL HD also provides a wide range of data interface options and supports a variety of telephone, intercom, and other voice-grade applications.
Harris® Intraplex® is a world leader in T1 audio transport solutions, with thousands of systems in operation.
Features
- Intraplex T1 technology
Building on 20+ years of experience, STL HD is the latest generation of Intraplex, continuing the tradition of unsurpassed reliability and state-of-the-art technology, while maintaining compatibility with earlier generations of Intraplex T1 systems. Hot-standby redundant power supplies and advanced T1 error mitigation techniques provide enhanced transmission robustness, making STL HD a system you can rely on for years to come. - Audio transport
With STL HD, uncompressed audio occupies about three-fourths of the T1, leaving room for additional traffic in each direction. A wide selection of compression options, including Enhanced apt-X®, MPEG- 2, MPEG-3, J.41, and G.722, allows the carrying of multiple audio channels on a single T1. Audio I/O is either analog or AES/EBU digital, while sample rates ranging from 16 kS/s to 48 kS/s provide for audio bandwidth options from 7 kHz up to 20 kHz and beyond. - Telephone links
A full range of telephone interface options allow the STL HD to support a variety of telephone and other voice-grade audio applications, including 2-wire and 4-wire E&M for linking PBXs and KSUs, Off- Premise Extension (OPX) circuits that allow you to connect a telephone handset at the transmitter site to a PBX at the studio as if it were in the next room, and open 4-wire circuits to support talkback and intercom systems with both standard (3.4 kHz) and wideband (7 kHz) voice quality, as well as FSK tones for use with telephone keypad operated remote controls. - Data circuits
The industry’s most extensive array of data interface options allows you to set aside part of your T1 STL to create a LAN bridge, carry HD Radio™ data traffic in either I2E or E2X format, and link to virtually any type of control and data storage equipment. Available synchronous and asynchronous interfaces include RS-232, RS-449, V.35, X.21, TCP/ IP, UDP, TTL and more. - AudioLink Plus
AudioLink Plus is a family of E1 audio multiplexers that offers all the same features as STL HD does for T1. If you are planning to use microwave radios to establish your STL, consider using E1 instead of T1. Most telecoms radios that can carry T1 can also be configured to carry E1, and you get one-third more carrying capacity at the same price. Ask your Harris representative for details.
Specifications
Specifications and designs are subject to change without notice.
| STL HD Systems
All STL HD systems start with one pair of T1 multiplexers, whose specifications are found below, plus some combination of the following: | |
| PT/PR-353 linear audio cards with MA-508/509 PT/PR-153 compressed audio cards with MA-508/509 DA-191B RS-232 data cards with MA-404s DS-64NC LAN bridge cards with MA-427s VF-15/VF-16A Off-Premise Extension voice cards with MA-303s VF-25 4-wire voice cards with MA-306s | |
| T1 Section | |
| Connector | RJ-48C, 100 Ohms |
| Frame Formats | Extended Superframe (ESF)
D4/Superframe (SF) |
| Line Codes | B8ZS
AMI |
| T1 Timing | Internal, External, Loop |
| Line Build Out (LBO) | Up to 655 ft
LBO 0, -7.5 or -15 dB |
| Integral CSU | No external CSU required |
| Status and Diagnostics | |
| LED Indicators | Power, Normal, Alert, Alarm |
| Loopbacks | Line, Equipment, Payload |
| T1 Test Access | Bantam jacks |
| CSU Performance Monitoring | Compliant with ANSI T1.403 - 1995 and AT&T Pub 54016 |
| Remote Access and Control | |
| User Interface | IsiCL command-line interface
IntraGuide™ Configuration and Management Software SNMP proxy agent |
| Control Interface | RS-232 and RS-485 |
| Physical and Environmental | |
| Power Requirements | Universal AC standard
Less than 25 W, each shelf |
| Dimensions (rackmount) (HxDxW) | 3RU: 5.25 x 14.75 x 19 in. (13.4 x 36.8 x 48.3 cm) |
| Weight | 12 lbs (5.4 kg) |
| Regulatory Compliance | CE Approved
FCC Part 15, FCC Part 68 UL 1950 Industry Canada CS-03 |
| Linear Audio | |
| Audio Section | |
| PT-353 Input Module | Digital/analog input, auto-detect |
| PR-353 Output Module | Digital/analog output, simultaneous |
| Audio Channels | 1 or 2 per module
|
| Sample Rate and Audio
Bandwidth | 48 ks/s for 22.5 kHz operation*
44.1 ks/s for 20 kHz operation 32 ks/s for 15 kHz operation |
| Coding | 16-bit linear coding |
| Data Rate and Time Slot Usage (with FEC on) | 2 ch. 22.5 kHz: 25 TS (1.600 Mb/s)*
2 ch. 20 kHz: 23 TS (1.472 Mb/s) 2 ch. 15 kHz: 17 TS (1.088 Mb/s) |
| Processing Delay (digital audio through one pair of modules) | Less than 6.0 ms |
| Error Correction (FEC) | Reed Solomon |
| Data Channel | RS-232 up to 9.6 kb/s, simplex |
| Input/Output Connectors | Audio Inputs: XLR female
Audio Outputs: XLR male Ext. clock, Data/Alarm: RJ-11 |
| Digital Audio Operation | Accepted Audio Sampling Rates
AES/EBU rate 32 to 48 ks/s |
| Rate conversion (PT) (user selectable) | Converts any AES/EBU input rate to 48, 44.1, or 32 ks/s |
| Rate Adaptation | PT locks to incoming AES/EBU clock rate, which is preserved to the output (PR) |
| External Sync (PR) | External AES/EBU reference signal or RS-422 clock to synchronize audio output to facility timing |
| Input/Output Impedance | Balanced, 110 ohms ±20% |
| Analog Audio Operation | |
| Frequency Response ±0.5 dB | 48 ks/s: 1 Hz - 22 kHz
44.1 ks/s: 1 Hz - 20.5 kHz 32 ks/s: 1 Hz -15 kHz |
| Full Load Level | +9 to +24 dBu |
| Crosstalk | Greater than -80 dB |
| Total Distortion (THD+N) | Less than 0.003% at 1 kHz
-1 dBFS input |
| Dynamic Range | Greater than 91 dB |
| Input Impedance | Balanced, 600 ohms nominal or greater than 10 Kohms |
| Output Impedance | Balanced, less than 52 ohms |
| VU meter | 5-segment LED Audio Level with overload indication |
| Test Tone Generator | 1004 Hz at -12 dBFS |
| Audio Module Alarm | Card level failure relay contacts |
Ordering Information
The items listed on this page cover the most common T1 STL requirements. If you don't see what you’re looking for here, please contact your Intraplex salesperson for assistance.
A T1 circuit consists of 24 time slots in each direction. Use the Time Slot Usage column to see how many slots each option requires.
| Item: | What it does: | Time Slot Usage: | |
| Start with one of these systems... | STL HD system (Contains 2 STL-163-ACC T1 multiplexers, each with CM-5RB T1 card, MA-215 interface card, and 1 PSY60AC power supply, plus 1 each PT-353, PR-353, MA-508, and MA-509) | Provides a basic uncompressed STL, with 2 T1 multiplexers, an uncompressed stereo audio encoder card at the studio end and a matching decoder at the transmitter end. | 17 one-way @ 32 ks/s, or
23 one-way @ 44.1 ks/s |
| STL HDPLUS system (Contains 2 STL-163-ACC T1 multiplexers, each with CM-5RB T1 card, MA-215 interface card, and 1 PSY60AC power supply, plus 1 each PT-153, PR-153, MA-508, and MA-509) | Provides a basic STL using Enhanced apt-X™ compression, with 2 T1 multiplexers, a compressed stereo encoder card at the studio end and a matching decoder at the transmitter end. | 4 to 6 one-way @ 32 ks/s, or
6 to 9 one-way @ 44.1 ks/s, or 6 to 9 one-way @ 48 ks/s | |
| …and add
any of these packages you may need, up to the 24 time slot capacity in each direction of the T1 circuit | 4140 package (Contains 1 each PT-353, PR-353, MA-508, and MA-509) | Add a one-way uncompressed stereo audio program to one of the above systems. If the base system is an IX-STLHD, this can only be used in the return (TSL) direction | 17 one-way @ 32 ks/s, or
23 one-way @ 44.1 ks/s |
| 4113 package (Contains 1 each PT-153, PR-153, MA-508, and MA-509) | Add a one-way Enhanced apt-X® compressed stereo audio program to one of the above systems. As you can see from the time slot usage of these cards, you can put up to 6 compressed stereo channels in each direction of the T1 if necessary. | 4 to 6 one-way @ 32 ks/s, or
6 to 9 one-way @ 44.1 ks/s, or 6 to 9 one-way @ 48 ks/s | |
| 4161 package (Contains 2 each DA-191B and MA-404) | Add up to 4 RS-232 asynchronous data channels to one of the above systems. Main uses: to carry remote control signals, RBDS, or other aux data with an RS-232 interface. | In both directions:
1 for two channels @ 9.6 kb/s, or 1 per channel @ 19.2 kb/s, or 2 per channel @ 38.4 kb/s | |
| 4173 package (Contains 2 each DS-64NC and MA-427) | Add a wideband data channel with Ethernet interface to one of the above systems.
Main uses: to create a LAN bridge across part of the T1, or carry the TCP or UDP data for an HD Radio signal. | 1 to 24 in both directions.
Typically 5 for an HD Radio TCP signal, or whatever is available for a LAN bridge. | |
| 4102 package (Contains 1 VF-15, 1 VF-16A, and 2 MA-303) | Add up to 2 Off-Premise Extension telephone channels to one of the above systems.
Main use: to place a telephone at the transmitter site and make it an extension attached to the PBX at the studio | 1 per channel in both directions | |
| 4104 package (Contains 2 each VF-25 and MA-306) | Add up to 4 4-wire voice channels to one of the above systems.
Main uses: to connect 2 PBXs, to carry FSK remote control signals, or to provide open 4-wire circuits for talkback or intercoms. | 1 per channel in both directions | |
| PSY60AC | Add hot-standby redundant power supplies to 1 of the above systems. This is a single item, not a package of 2, so order 1 for each end. | None |
OPTIONS
The Intraplex Shelf Control Module (SCM) for IP provides simple network management protocol (SNMP) agent support for the Intraplex family of products.
Sales Contacts
- North America +1 800 231 9673
- Caribbean and Latin America +1 786 437 1960
- Europe, Middle East & Africa +44 (0) 118 964 8200
- Asia, Pacific Rim +852 2776 0628
