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Maxiva™ VAX with PowerSmart® 3D
Maxiva™ VAX
Maxiva™ VLX
Maxiva™ VAX Compact Class
MAP300E DAB/DAB+ Encoder
MAP250E DAB/DAB+ Encoder
MAP200E DAB Encoder
Ensemble Provider Head-End System
Data Applications for DAB
DBS100 Data Server
Service Provider System
rsw100 Switch
Test & Demo system
Cadenza Audio Compressor
DAB ETI Recorder/Player
DTC100 DAB Transport Converter
Factum ETI Test Library

 The Maxiva™ VAX with PowerSmart® 3D VHF air-cooled transmitter delivers the highest AC to RF efficiency available today for TV and DAB broadcasters.  Based on the innovative Harris Broadcast VHF transmission platform, the new Maxiva VAX transmitter incorporates ground-breaking technology to deliver unrivaled power efficiency, an extended power range and a full operator feature set. These capabilities, along with flexible system configurations and a very compact design, all add up to save money, time, increase system reliability and provide a solid foundation for broadcasters to build their network.

PowerSmart 3D technology delivers superior operational efficiencies through fully broadband, single-amplifier designs that simplify installation, improve performance, and streamline ongoing operation – including maintenance.  This comes courtesy of a modular design that eliminates tuning, minimizes overall labor and reduces spare parts to one set for an entire transmission network.
The highest efficiency VHF Band III transmitter on the market. The all new design includes these energy saving components:
New patent-pending PowerSmart 3D technology, for best-in-class power efficiency and lowest operating costs
High efficiency DC power supplies
Variable speed cooling fans
VAX Compact Drive
Typical AC to RF efficiency of over 40% for ATSC and DAB modulations, including cooling. Typical COFDM TV RF to AC efficiency of up to 37%, including cooling
Rugged, reliable design and construction
Digital power levels up to 12 kW ATSC, 10 kW DAB/DAB+/DMB and 6.4 kW COFDM TV
Field-proven Maxiva M2X™ exciter technology, allowing easy migration to new digital standards
All-digital linear and nonlinear pre-correction, including exclusive Harris Broadcast Real-Time Adaptive Correction (RTAC)
Fully broadband high efficiency PA modules, with no tuning or adjustments — 168 to 242 MHz
Excellent PA module to power supply redundancy
Hot-pluggable, small and lightweight linear RF amplifier modules and DC power supplies
Transmitter monitoring and in-depth diagnostics via easy-to-use, front-panel controls and indicators
Web-enabled remote control graphical user interface

Specifications and designs are subject to change without notice.

Frequency Range 168 to 242 MHz, in 1 Hz steps
Transmission Standards DAB, DAB+, DMB, ATSC, DVB-T, DVB-T2, ISDB-Tb
Channel Bandwidth 1.5, 6, 7 or 8 MHz (system dependent)
Rated Power Output See chart below
Output Power Reduction Range 0 to -10 dB
RF Load Impedance 50 ohms
VSWR Protected against open or short circuit, all phase angles. Capable of operation into infinite VSWR with user-adjustable fold back threshold. Factory pre-set to 4% of nominal nameplate power (VSWR = 1.5:1)
RF Output Connector 1-5/8 or 3-1/8 in. EIA (dependent upon power level, DIN 7-16 optional for lower power levels)        
AC Mains  
AC Line Voltage 3 phase: 380 to 415 V, or 208 to 240 V, 50/60Hz, or Single Phase 208 to 240 V, 50/60 Hz - specify when ordering
AC Line Variation ±15%, between 208 to 230 V or 380 to 400 V
Power Factor >0.97
Altitude Up to 13,123 ft (4,000 m) elevation above mean sea level
Ambient Temperature 32° to 113° F (0° to 45° C) at sea level (upper limit derated 3.6° F (2° C) per 984 ft (300 m) elevation AMSL)
Humidity 95%, non-condensing
Cooling Method Air-cooled with internal fans, air flow front to rear (external air using optional front air plenum)
Acoustic Noise <65 dBA (measured 1 m in front of cabinet. For VAX-4PA systems and larger, the external input air plenum is required to meet acoustic noise specification)
Frequency Stability Without precision frequency control/GPS: ±150 Hz/month (6.2 x 10-7ppm)
External Inputs  
GPS Input SMA female, 50 ohms, (+5 V DC @ 100 mA max output for active antenna)
1 PPS Input BNC female, user selectable 50 ohms or high impedance termination
10 MHz Reference Frequency Input BNC female, 50 ohms
Monitoring Outputs  
RF Monitor (exciter) SMA female
1 PPS SMA female
10 MHz SMA female
DVB-T / DVB-T2 / ISDB-Tb Specification
Power Output (average) 200 W to 6.4 kW models available, measured before mask filter (see chart below)
Systems DVB-T/H, standard EN 300744 
DVB-T2, standard EN 302 755 
ISDB-Tb, Brazil ANATEL standard
ASI/T2MI Inputs 2 inputs BNC female; 75 ohms according to EN 50083-9 (for DVB-H 2 main/2 hierarchical
Crest Factor 13 dB maximum
Shoulder Level <-37 dB (before mask filter)
END <0.5 dB
MER >33 dB (typical 35 dB)
Harmonics (before filter) <-40 dB
Central Carrier Suppression >75 dB
DVB-T2 Modes Supports multiple PLP’s, MISO, extended bandwidth mode, PAPR reduction
DAB / DAB+ / DMB Specification
Power Output (average) 300 W to 10 kW models available, measured before mask filter (see chart below) 
Systems DAB/DMB (OFDM) ETSI EN 300 401 & ETSI TR101 496-1
Power Stability ≤ ±0.25 dB
Harmonic/Spurious Output Complies with EN 302077-2 when used in conjunction with proper band pass filter
Shoulder Level >35 dB, >36 to 40 dB typical
MER >25 dB
Signal Inputs ETI Input: BNC-female, user selectable 75 ohms or high impedance termination. 2x ETI (NI, G703) or 2x ETI (NA, G704), seamless input signal switch-over automatic optional EDI input: 10/100 Base T RJ-45, per ETSI TS 102 693 V1.1.2, 1 channel, UDP/DCP or TCP/DCP protocol
Monitoring Outputs ETI Monitor 
2.048 MHz 
Sync ETI 
ATSC Specification
Power Output (average) 375 W to 12 kW models available, measured before mask filter (see chart below)
System ATSC A-53, 8-VSB DTV standard
Data Input 19.39 Mb/s, Configurable as SMPTE-310M or ASI (user selectable)
Impedance 75 ohms, unbalanced
Input Connector 2 inputs, BNC female
Signal to Noise (EVM) >27 dB (EVM <4%), Typical >32 dB (EVM <2.5 %)
Phase Noise <104 dBc/Hz @ 20 kHz offset (ATSC A/64)
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 Broadcast-supplied output filter

VAX Model Numbers and Power Levels

Model RF Power Pre-filter (W)
VAX1-3D 300 375 200
VAX2-3D 600 750 400
VAX4-3D 1,250 1,500 800
VAX6-3D 1,875 2,250 1,200
VAX8-3D 2,500 3,000 1,600
VAX12-3D 3,750 4,500 2,400
VAX16-3D 5,000 6,000 3,200
VAX24-3D 7,500 9,000 4,800
VAX32-3D 10,000 12,000 6,400

Note: Model number is followed by 2 letter modulation code
T2: DVB-T2