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Maxiva™ ULX
Liquid-Cooled UHF Multimedia TV Transmitter
The Maxiva™ ULX UHF liquid-cooled, solid-state transmitter provides today’s multimedia broadcaster with one transmitter platform capable of multiple modulation schemes. Featuring the proven Apex M2X™ multimedia exciter at its core, the Maxiva ULX transmitter is an ideal solution for digital applications, as well as any analog broadcaster planning a future transition to DVB-T/H, DVB-T2, ATSC, ATSC-MDTV, ISDB-Tb, CMMB, CTTB, and other digital standards.
Maxiva ULX transmitters incorporate Harris® PowerSmart® technology, enabling best-in-class power-density and efficiency. With digital power levels up to 28.1 kW COFDM and 44.6 kW ATSC and analog power levels up to 75 kW, the Maxiva ULX transmitter offers the best footprint-to-power ratio in the industry — allowing for simplified installation, easier maintenance and reduced total cost of ownership over the life of the transmitter.
To learn more about PowerSmart, please click on the logo below:
Features
- PowerSmart technology, for best-in-class power efficiency and lowest operating costs
- Apex M2X exciter technology, allowing easy migration from analog to digital or between different standards
- Rugged, reliable design and construction
- Analog power levels up to 75 kW, digital power levels up to 44.6 kW ATSC, 28.1 kW COFDM
- All-digital, real-time adaptive linear and nonlinear precorrection
- Fully broadband power amplifier (PA) modules — 470 to 862 MHz with no adjustment
- 1:1 RF device to power supply ratio for ultimate redundancy
- Hot-pluggable liquid-cooled linear RF amplifier modules
- Automatic restart after AC mains interruption; returns to previous operational mode
- Modular central control system, for straightforward monitoring and in-depth diagnostics
- Web-enabled remote graphical user interface (GUI)
- Energy-efficient cooling system adapts pump and fan speeds to varying environmental conditions
Product Details
Best-in-Class Efficiency
Featuring Harris PowerSmart technology in its transmitter architecture, the Maxiva ULX line offers unmatched efficiency that makes it ideal for all high-power UHF applications. 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.
Powerful, Straightforward Monitoring and Control
The Maxiva ULX transmitter features a modular central control system within the main transmitter cabinet. It is housed in a rackmounted 3RU chassis featuring convection cooling and integrated, low-voltage control power supply with redundancy. The main controller communicates with the transmitter modules and the exciters, as well as the cabinet level controllers located in additional cabinets. Individual cabinet controllers provide for maximum redundancy and independent operation in times of service or fault, while still providing full protection.
For maximum functionality, all Maxiva ULX systems include a Transmitter Control Unit (TCU). The TCU includes two parallel levels of operational support: a main microprocessor based controller and a back-up, or “life-support” controller. The main controller provides a front-panel, color touch-screen display, SNMP communications support and IP connectivity via the built-in Web GUI. Ideal for network operations, the control system can be accessed from anywhere in the world via TCP/IP over a telecom or network connection. The back-up controller provides minimal control and monitoring of the transmitter platform, using a small number of parallel signals, simple interface controls and front-panel controls and indicators.
Easy Migration from Analog to Digital
The Apex M2X multimedia exciter supports a broad range of analog, digital, and mobile standards and allows for a smooth conversion from analog to digital operation. This flexibility, coupled with Real-Time Adaptive Correction (RTAC™), provides superior performance.
Simple Serviceability and Maintainability
Distributed control architecture provides for outstanding reliability and soft failure operation. The modular-designed PAs enable simple sub-module replacement, rather than the entire amplifier module. On-air servicing has been simplified, and costly service interruptions are virtually eliminated with the hot-pluggable, redundant power amplifier/power supply modules.
Reduced Service Costs
Lightweight, universal PA pallets and power supply modules facilitate overnight/same-day shipment from a centralized depot for simple and cost-effective spares holding. Lightweight subassemblies eliminate two-person lift requirements for maintenance and troubleshooting, resulting in labor-related cost savings.
Enhanced Redundancy
The Maxiva ULX transmitter supports a range of backup options. In dual-drive systems, the integrated control system monitors exciters and switches control and RF feeds. The control system also supports options for 1+1 and full N+1 installation — monitoring and controlling each transmitter system, input stream and RF switching.
Compact Footprint
As the world’s most compact liquid-cooled UHF transmitter, the Maxiva ULX is ideally suited for crowded, shared transmitter sites.
Images/Diagrams
Configuration
Specifications
Specifications and designs are subject to change without notice.
| General | |
| Frequency Range | 470 to 862 MHz |
| Channel Bandwidth | 6, 7 or 8 MHz |
| RF Load Impedance | 50 ohms, 1.1:1 VSWR over any single TV channel |
| RF Output Connector | 1-5/8 in. (4 mm), 3-1/8 in. (8 mm), 4-1/16 in. (10 mm), EIA (dependent upon power level) |
| AC Mains | |
| AC Mains Requirement: | |
| AC Line Voltage | 3-phase 50/60 Hz, 380 to 415 V, or 208 to 240 V (specify when ordering) |
| AC Line Variation | 10% to -15% |
| Power Factor | >0.90 |
| Environmental | |
| Altitude | Up to 13,123 ft (4,000 m) elevation above mean sea level |
| Ambient Temperature | 32º to 113º F (0º to 45º C) at sea level (upper limit derated 3.6º F (2º C) per 984 ft (300 m) elevation AMSL) |
| Humidity | Up to 95%, non-condensing |
| Cooling Method | Liquid (50% mixture of water and ethylene glycol or propylene glycol) |
| Acoustic Noise | <65 dBA (measured 3.3 ft (1 m) in front of cabinet, not including pump module) |
| Analog | |
| Analog Television Systems | CCIR G, I, K, K1, M, N |
| Color Systems | PAL, NTSC, SECAM |
| Sound Systems | Monaural, BTSC, IRT, NICAM G |
| Power Output (vision peak of sync) | 2.5 to 75 kW available (higher powers on request) |
Analog Video Performance | |
| Video Input | 2 inputs, 75 ohms, 0.7 to 1.4 V, 75 ohms, 34 dB return loss |
| Regulation of Output Power1 | ±3% |
| Variation of Output Power2 | ±2% |
| Vision Sideband Response3 | PAL system G shown (other systems available) |
| -1.25 MHz and below | -20 dB or less |
| -4.43 MHz | -30 dB or less |
| -0.75 to -1.25 MHz | +0.5 dB or less |
| -0.5 to +4.5 MHz | +0.5 to -0.5 dB |
| +5.0 MHz | +0.5 to -2.5 dB |
| +5.75 MHz and above | -35 dB or less |
| Frequency Stability4 | ±150 Hz/month |
| Differential Gain5 | 3% |
| Differential Phase5 | 3° |
| Low Frequency Linearity6 | 10% |
| Incidental Carrier Phase Modulation5 | ±2° |
| Signal-to-Noise Ratio | >60 dB (weighted) |
| K Factor | 2% or less with 2T sin2 pulse |
| 20T Equivalent Gain and Delay | 3% total baseline distortion |
| Spurious (inter-modulation) and Harmonic Radiation | -60 dB or better |
| In-Channel Intermodulation | -58 dB, or better (-60 dB typical) |
Analog Sound Performance | |
| Frequency Stability | ±150 Hz/month |
| Modulation Capability | ±120 kHz peak deviation |
| Monaural Input | Adjustable 0 to +12 dBm, 600 ohms, balanced,
>30 dB return loss |
| Pre-emphasis | Selectable 75 µS or 50 µS |
| Frequency Response | ±0.5 dB, 40 Hz to 15 kHz |
| Harmonic Distortion | 0.5%, 30 Hz to 15 kHz |
| FM Noise | 60 dB RMS with de-emphasis |
| AM Noise | 50 dB RMS from 30 Hz to 15 kHz |
| Synchronous AM Noise | 40 dB RMS at 400 Hz with ±25 kHz deviation |
| IRT Sound | Available on request |
| NICAM Sound | Available on request |
| DVB-T, DVB-T2, ISDB-TB, CMMB, CTTB | |
| Power Output (average) | 1.1 to 28.1 kW models available; measured before optional mask filter |
| Systems | DVB-T, standard ETS 300744, DVB-T2, standard EN302755; ISDB-TB (Brazil standard) |
| ASI Inputs | 4 type BNC female; 75 ohms acc. to EN 50083-9 (2 main, 2 hierarchical); 2 main inputs may be used as T2MI for DVB-T2 applications |
| Output Power Reduction | 0 to -6 dB |
| Crest Factor | Maximum 13 dB |
| Shoulder Level | <-37 dB (before mask filter) |
| END | ≤0.7 dB |
| MER | >33 dB |
| Harmonics (before filter) | <-40 dB |
| Central Carrier Suppression | >75 dB |
| Frequency Stability (without external reference) | ±150 Hz/month |
| Frequency Offsets | 1 Hz resolution |
| ATSC | |
| Power Output (average) | 1.5 to 1.4 to 44.6 kW models available; measured at output of optional mask filter |
| System | ATSC A-53, 8-VSB DTV standard; ATSC Mobile DTV |
| Data Input
Impedance Standard Connector | 19.39 Mb/s
75 ohms, unbalanced SMPTE 310M 2 BNC female, isolated |
| External Precise Frequency Input
Impedance Level Connector | 10 MHz, sinusoidal
50 ohms, unbalanced 0 to 10 dBm BNC 50 ohms, female |
| Signal to Noise (EVM) | 27 dB or better (4% or less) |
| Phase Noise | <104 dBc/Hz @ 20 kHz offset (ATSC A/64) |
| Pilot Frequency Stability | Less than ±150 Hz/month
Less than ±3 Hz with internal or external PFC |
| Harmonic Radiation and Spurious | Meets mask requirements specified in FCC 5th and 6th report and order |
| Sideband Performance | Compliant with FCC radiation mask, when measured at the output of Harris-supplied output filter |
| 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 |
| Compliance | RoHS 2002/95/EC
R&TTE 1999/5/EC Safety: EN 60215 EMC: EN 301-489-1 FCC Part 73 |
1 Variation of peak output power with a change in average picture level from black to white (0% to 100%).
2 Peak-to-peak variation of peak sync voltage during one field using field test signal per EIA-508.
3 Response specified for transmitter operating into a resistive load of 1.05:1 VSWR.
4 After initial aging of 60 days.
5 Measured using 20% peak-to-peak amplitude swept video modulation with pedestal set at 10%, 50% and 90% APL. All percentages relative to a blanking to white transition.
6 Measured using a 5-step staircase signal. Test signal #3, CCIR REC. #421-3 Derate maximum temperature by 3.6º F (2° C) per 1000 ft (305 m) above mean sea level.
Maxiva ULX Series Power Levels
| Number of
Cabinets | Number
of PA Modules | Power Output (Watts) | |||||||
| ATSC | COFDM | Analog | |||||||
| Pre-Filter 470-698 MHz | Pre-Filter >698 MHz | Pre-Filter 470-494 MHz | Pre-Filter 495-630 MHz | Pre-Filter 631-670 MHz | Pre-Filter >670 MHz | Pre-Filter | Post-Filter | ||
| 1 | 2 | 2000 | 1700 | 1200 | 1200 | 1200 | 1100 | 3600 | 3200 |
| 1 | 3 | 3000 | 2600 | 1800 | 1900 | 1800 | 1700 | 5200 | 5000 |
| 1 | 4 | 4000 | 3400 | 2400 | 2500 | 2400 | 2300 | 7100 | 6800 |
| 1 | 6 | 6000 | 5200 | 3600 | 3800 | 3600 | 3400 | 10500 | 10000 |
| 1 | 8 | 8000 | 6900 | 4800 | 5000 | 4800 | 4400 | 13800 | 13000 |
| 1 | 10 | 9600 | 8300 | 5700 | 6100 | 5700 | 5500 | 17000 | 16500 |
| 1 | 12 | 11500 | 10000 | 6900 | 7300 | 6900 | 6500 | 20900 | 20000 |
| 1 | 16 | 15400 | 13300 | 9200 | 9700 | 9200 | 8700 | 26200 | 25000 |
| 2 | 18 | 16900 | 14700 | 10400 | 11000 | 10400 | 9800 | 31400 | 30000 |
| 2 | 24 | 22200 | 19300 | 13300 | 14100 | 13300 | 12600 | 41400 | 40000 |
| 2 | 32 | 29800 | 25700 | 17800 | 18700 | 17800 | 16800 | 51800 | 50000 |
| 3 | 36 | 33300 | 29000 | 20000 | 21200 | 20000 | 18800 | 62100 | 60000 |
| 3 | 48 | 44600 | 38500 | 26700 | 28100 | 26700 | 25200 | 77600 | 75000 |
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
