LAX
Compact, Air-Cooled L-Band Multimedia Transmitter
The Harris® LAX air-cooled L-Band solid-state transmitter incorporates the Apex M2X™ multimedia exciter to provide today’s broadcaster unmatched performance, reliability and quality. Designed with future broadcasting needs in mind, the LAX transmitter is a single-transmitter platform capable of multiple modulation schemes.
As the world leader in modulation and broadcast RF technology, Harris and the LAX transmitter is an ideal partner for companies planning new multimedia broadcast services in the 1450 to 1492 MHz band.
Features
- Best-in-class power efficiency and lowest operating costs
- Increased power density over previous models, resulting in the world’s most compact digital L-Band transmitter
- Rugged, reliable design and construction
- Small footprint with single cabinet power levels up to 1.2 kW
- Multiple cabinet support for higher power requirements
- Includes Harris Apex M2X multimedia exciter, allowing easy migration between standards
- All-digital linear and nonlinear pre-correction
- Fully broadband PA modules — 1450 to 1492 MHz
- 1:1 PA module to power supply redundancy
- Hot-pluggable, air-cooled linear RF amplifier modules and universal power supplies
- Automatic restart after AC mains interruption; returns to previous operational mode
- Modular central control system for straightforward monitoring and in-depth diagnostics
- Incorporates eCDi® web-enabled remote GUI interface
- Modular design enables outdoor deployment, such as rooftop or tower space
Product Details
Harris® PowerSmart® Technology Inside
With PowerSmart® technology in its transmitter architecture, the LAX offers superior power and efficiency. New 50-volt LDMOS device technology delivers a dramatic increase in power density, lower operating costs and reduced cost of ownership over the life of the transmitter.
To learn more about PowerSmart, please click on the logo below:
Software-Defined Apex M2X Exciter
The LAX includes the Apex M2X exciter, which supports a range of analog, digital and mobile standards. This flexibility, coupled with the exclusive Real-Time Adaptive Correction (RTAC™), provides superior performance with a flexible transition path to fit your needs today and tomorrow.
Maximum Efficiency for Cost-Effective Operation
The LAX transmitter offers market-leading power efficiency, lower operating costs and reduced cost of ownership over the life of the transmitter.
Compact Footprint
As the most compact air-cooled L-Band transmitter, the LAX is ideal for crowded, shared transmitter sites. The LAX transmitter reduces facility space requirements, simplifies installation, lowers shipping costs and allows for easier maintenance.
Powerful, Straightforward Monitoring and Control
Distributed control architecture provides for outstanding reliability, soft failure operation and simple serviceability.
Improved Up Time and Reduced Service Costs
Redundant power amplifier (PA) and universal power supply (PS) modules make on-air servicing simple and eliminate costly interruptions. Lightweight pallets and modules facilitate overnight/same day shipping for simple, cost-effective spares holding. With lightweight subassemblies, LAX virtually eliminates any two-person lift requirements for routine maintenance and troubleshooting.
Images/Diagrams
Block Diagram
Specifications
Specifications and designs are subject to change without notice.
| General | |
| Frequency Range | 1450 to 1492 MHz, in 8 kHz increments |
| RF Load Impedance | 50 ohms, 1.1:1 VSWR over any single TV channel |
| RF Output Connector | Type-N female or 1-5/8 in. EIA |
| (dependent upon power level) | |
| AC Mains | |
| AC Mains Requirement: | Up to 750 W: 90 to 264 VAC, 47 to 63 Hz, dual IEC C20 inlets |
| 500 to 3000 W: 200 to 264 VAC 47 to 63 Hz, triple IEC C20 inlets for each 1500/3000 W chassis | |
| Configurable on-site for single- or three-phase connection: | |
| 200 to 264 VAC single phase, 200 to 264 VAC delta | |
| 200 to 264 VAC wye, or | |
| 350 to 450 VAC wye | |
| Optional in-rack AC distribution chassis provides individual circuit breaker protection for each AC input | |
| Power Factor | >0.90 |
| Mechanical | |
| Dimensions: | Standard EIA rack 19 in. (48.3 cm) |
| 1RU = 1.75 in. (4.45 cm) | |
| LAX 100: | 9RU (single drive)
13RU (dual drive), 23.6 in. (60 cm) depth |
| LAX 200: | 13RU (single drive) |
| 17RU (dual drive), 23.6 in. (60 cm) depth | |
| LAX 400: | 17RU (single drive) |
| 21RU (dual drive), 23.6 in. (60 cm) depth | |
| LAX 800: | 84 in. (213 cm) height; 31.5 in. (80 cm) depth |
| LAX 1200: | 84 in. (213 cm) height; 31.5 in. (80 cm) depth |
| Weight (single drive), all modules installed | |
| LAX 100: | 420 lbs (190 kg) |
| LAX 200: | 485 lbs (220 kg) |
| LAX 400: | 549 lbs (250 kg) |
| LAX 800: | 778 lbs (325 kg) |
| LAX 1200: | 840 lbs (381 kg) |
| DVB-T/H//DAB/DMB/FLO™ | |
| Power Output (average) | 300 to 1,200 W models available |
| Measured before mask filter output | |
| Systems | FLO, DVB-T/H, DAB/DMB standard |
| ASI Inputs | 4 type BNC female; 75 ohms acc. to EN 50083-9 (2 main/2 hierarchical) |
| Output Power Reduction | 0 dB to -6 dB |
| Crest Factor | Maximum 13 dB |
| Shoulder Level | <-36 dB (before mask filter) |
| MER | >33 dB |
| Group Delay Amplitude Response | <+/- 0.5 dB |
| Harmonics and Spurious Emissions | Compliant with CE Specification EN 302 296 (external reference) <36 us/hr for duration of 24 hrs |
| Frequency Offsets | 2 MHz resolutions |
| Remote Control | |
| Parallel REMOTE | DB-37, female |
| Relay Contacts | 25 mA @ 24 VDC |
| Digital Inputs (TTL level) | Pulse duration ≥100 ms or permanent signal |
| Ethernet/SNMP (optional) | RJ-45, twisted pair |
Monitoring Outputs
ETI OUT, ETI (NI), ETI-frame, COFDM-frame, LO, RF monitor (low power stage), 1 Hz (1 pps signal), reference frequency (10 MHz), incident and reflected Tx output (optional).
Compliance
RoHS 2002/95/EC, R&TTE 1999/5/EC, Safety: EN 60215, EMC: EN 301-489-1
Power Levels
Sales Contacts
- North America +1 800 231 9673
- Caribbean and Latin America +1 786 437 1960
- Europe and Africa +44 118 964 8200
- Middle East and South Asia +971 4 433 8250
- Asia, Pacific Rim +852 2776 0628
