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Maxiva™ VAX with PowerSmart® 3D

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 GatesAir 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.

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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 GatesAir 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 GatesAir 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

General
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

Environmental
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^-7 ppm)

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 Sync OFDM

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)
	DAB	ATSC	TV-COFDM
VAX1-3D	250	375	200
VAX2-3D	500	750	400
VAX4-3D	1,000	1,500	800
VAX6-3D	1,500	2,250	1,200
VAX8-3D	2,000	3,000	1,600
VAX12-3D	3,000	4,500	2,400
VAX16-3D	4,000	6,000	3,200
VAX24-3D	6,000	9,000	4,800
VAX32-3D	8,000	12,000	6,400

Note: Model number is followed by 2 letter modulation code
DA: DAB/DAB+/DMB
AT: ATSC / ATSC-MH
DV: DVB-T/H
T2: DVB-T2
IS: ISDB-T^B