Broadcast Communications / Intraplex STL HD

Broadcast Communications / Intraplex STL HD
Intraplex® STL HD
T1 STL System
Whether you’re looking for simple one-way audio transport or multichannel FM plus HD
Radio™, control data, or 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.
• 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 allows the STL HD to support a variety of telephone and
Intraplex STL HD
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 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
RJ48C, 100 Ohms
Frame Formats
Extended Superframe (ESF)
D4/Superframe (SF)
Line Codes
T1 Timing
Internal, external, loop
Line Build Out (LBO)
Up to 655 ft (199.6 m)
LBO 0, -7.5 or -15 dB
Integral CSU
No external CSU required
Status and Diagnostics
LED Indicators
Power, normal, alert, alarm
Line, equipment, payload
T1 Test Access
Bantam jacks
CSU Performance Monitoring
Compliant with ANSI T1.403 - 1995 and AT&T Pub 54016
User Interface
IsiCL command-line interface
IntraGuide™ configuration and management software
Intraplex STL HD
Optional 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)
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
48 ks/s for 22.5 kHz operation
44.1 ks/s for 20 kHz operation
32 ks/s for 15 kHz operation
16-bit linear coding
Data Rate and Time Slot Usage (with
2 ch. 22.5 kHz: 25 TS (1.600 Mb/s)
FEC on)
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
Less than 6.0 ms
one pair of modules)
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: RJ11
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
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 to 22 kHz
44.1 ks/s: 1 Hz to 20.5 kHz
32 ks/s: 1 Hz -15 kHz
Full Load Level
+9 to +24 dBu
Greater than -80 dB
Total Distortion (THD+N)
Less than 0.003% at 1 kHz
Intraplex STL HD
-1 dBFS input
Dynamic Range
Greater than 91 dB
Input Impedance
Balanced, 600 ohms nominal or greater than 10 K ohms
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
Contact your Harris sales representative for information on ordering these products.
Intraplex STL HD
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