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Maxiva™ UAX/UAXT

The Maxiva™ UAX air-cooled UHF solid-state transmitter incorporates PowerSmart® and Maxiva M2X™ multimedia exciter technologies to provide today’s broadcaster unmatched performance, reliability and quality. Designed with future broadcasting needs in mind, the Maxiva UAX transmitter is a single transmitter platform capable of DVB-T/H, DVB-T2, ATSC, ATSC Mobile DTV, ISDB-Tb, CMMB, CTTB or other digital standards. For pre-filter power output requirements up to 2.5 kW COFDM, 2.5kW 8VSB, and 3.75 kW analog, the Maxiva UAX transmitter is capable of serving broadcasters needs for efficient, easy to maintain transmitter systems. The UAX utilizes GatesAir platform technologies such as the Maxiva M2X multimedia exciter, PowerSmart technology and 50v LDMOS amplifier devices. This powerful blend provides best-in-class performance with respect to transmitter RF performance, efficiency, size, and upgradeability.

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The Maxiva^™ UAX air-cooled UHF solid-state transmitter incorporates PowerSmart^® and Maxiva M2X^™ multimedia exciter technologies to provide today’s broadcaster unmatched performance, reliability and quality. Designed with future broadcasting needs in mind, the Maxiva UAX transmitter is a single transmitter platform capable of DVB-T/H, DVB-T2, ATSC, ATSC Mobile DTV, ISDB-Tb, CMMB, CTTB or other digital standards.

For pre-filter power output requirements up to 2.5 kW COFDM, 2.5kW 8VSB, and 3.75 kW analog, the Maxiva UAX transmitter is capable of serving broadcasters needs for efficient, easy to maintain transmitter systems. The UAX utilizes GatesAir platform technologies such as the Maxiva M2X multimedia exciter, PowerSmart technology and 50v LDMOS amplifier devices. This powerful blend provides best-in-class performance with respect to transmitter RF performance, efficiency, size, and upgradeability.

PowerSmart technology, for best-in-class power efficiency and lowest operating costs
Rugged, reliable design and construction
Digital and analog power levels up to 2.5 kW and 3.75 kW, respectively (before filter)
Maxiva M2X exciter technology, allowing easy migration from analog to digital or between different standards
Real-Time Adaptive Correction (RTAC^™) technology is included with every system
Fully broadband power amplifier (PA) modules — 470 to 862 MHz
1:1 PA module to power supply (PS) redundancy
Hot-pluggable air-cooled linear RF amplifier modules and power supplies for simplified maintenance
Modular central control system for straightforward monitoring and in-depth diagnostics
Web-enabled remote graphical user interface (GUI)

General
Frequency Range	UHF TV Band
Transmission Standards	ATSC, DVB-T, DVB-T2, ISDB-Tb, CTTB
Channel Bandwidth	6, 7 or 8 MHz (system dependent)
Rated Power Output	2.66kW OFDM, 4kW ATSC before mask filter
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	7-16 DIN
AC Mains
AC Line Voltage	3 phase: 380 to 415 V, or 208 to 240 V, 50/60 Hz, 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	>0.95
Environmental
Altitude	Up to 8,200 ft (2,500 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), with external input air plenum/door
Frequency Stability	Without precision frequency control/GPS: ±150 Hz/month (2.3 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	BNC female
10 MHz	BNC female
DVB-T/DVB-T2 / ISDB-Tb / CTTB Specification
Power Output (average)	Up to 2.66 kW models available, measured before mask filter (see chart below)
Systems	DVB-T/H, standard EN 300744 DVB-T2, standard EN 302 755 v1.3.1 ISDB-Tb, Brazil ANATEL standard CTTB (China)
ASI/T2MI Inputs	2 inputs BNC female; 75 ohms according to EN 50083-9 (for DVB-H 2 main/2 hierarchical)
ASI/T2MI over ASI (optional)	1 input, 100/1000BASE-T
Crest Factor	13 dB maximum
Shoulder Level	<-37 dB (before mask filter)
END	<0.5 dB
MER	>34 dB (typical 36 dB)
Harmonics (before filter)	<-40 dB
Central Carrier Suppression	>75 dB
DVB-T2 Modes	Supports multiple PLP’s, MISO, extended bandwidth mode, PAPR reduction
ATSC Specification
Power Output (average)	Up to 4 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 GatesAir-supplied output filter
Remote Control
Parallel Remote	25 conductor D-sub for single drive basic rack, 12 conductor terminal block (mini Wago) on deluxe rack
Ethernet/SNMP	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 Manufacturing: ISO 9001: 2008

UAXT Model and Power levels

Model Number (xx = modulation)	OFDM Power Before Filter (Watts)*	ATSC Power Before Filter (Watts)	RF Output Connector	Total Rack Space (1 exciter)	Total Rack Space (2 exciters)
UAXT-1xx	640	1,000	DIN 7-16	5RU	8RU
UAXT-2xx	1,150	1,800	1-5/8” EIA	8RU	11RU
UAXT-3xx	1,725	2,700	1-5/8” EIA	11RU	14RU
UAXT-4xx	2,300	3,600	1-5/8” EIA	14RU	17RU

* Assumes up to 0.7 dB filter loss Other power levels, N+1 and multiple transmitters per rack systems available. Consult GatesAir for details.Modulations
AT – ATSC
DV – DVB-T
T2 – DVB-T2
IS – ISDB-Tb