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Maxiva M2X™

The Maxiva M2X™ multimedia exciter is a state-of-the-art, software-defined exciter that provides broadcasters with a wide range of benefits and flexibility for their transmission systems. The M2X enables analog broadcasters to transition to digital via a simple software update and DTV broadcasters to recognize the full features and functionality of HDTV, DTV and mobile TV channels. This world-class exciter provides a flawless digital signal with complete technical and regulatory compliance for all digital and analog transmitters. The Maxiva M2X supports a wide range of global digital standards, including ATSC, ATSC MDTV, DVB-T/H, DVB-T2, ISDB-Tb, DAB/DMB, CMMB, CTTB and a range of analog TV standards, including NTSC and PAL. And you can have confidence in your investment knowing that GatesAir digital exciters have logged more hours in real-time broadcast than all others combined.

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The Maxiva M2X^™ multimedia exciter is a state-of-the-art, software-defined exciter that provides broadcasters with a wide range of benefits and flexibility for their transmission systems. The M2X enables analog broadcasters to transition to digital via a simple software update and DTV broadcasters to recognize the full features and functionality of HDTV, DTV and mobile TV channels. This world-class exciter provides a flawless digital signal with complete technical and regulatory compliance for all digital and analog transmitters.

The Maxiva M2X supports a wide range of global digital standards, including ATSC, ATSC MDTV, DVB-T/H, DVB-T2, ISDB-Tb, DAB/DMB, CMMB, CTTB and a range of analog TV standards, including NTSC and PAL. And you can have confidence in your investment knowing that GatesAir digital exciters have logged more hours in real-time broadcast than all others combined.

Real-Time Adaptive Correction (RTAC™)
• Digital adaptive group delay equalization
• Optimized correction for tube and solid-state transmitters
• Frequency agility – Band I, III, IV, V (L-Band option available)
• Built-in GPS option for synchronous frequency network (SFN) support
• Built-in UPS option to support vital frequency-critical components for SFN operation
• Space-saving, 2RU design
• Easy-to-use operator interface via standard Web browser and external PC
• SNMP information available to higher-level agent
• Dual video or transport stream inputs with auto-switching
• Built-in compliance monitoring (limited suite)
• Seamless integration with new Harris Broadcast transmitter control systems
• Standard support for legacy or third-party transmitters
• Efficient, easy to service
• High-efficiency, auto-ranging power supply

Specifications and designs are subject to change without notice.

General
RF Output Connector	1 SMA, 50 ohms
RF Input Samples for
Adaptive Correction	2 SMA, 50 ohms dynamic range: –20 to +10 dBm
Frequency Range	Band I, III, IV, V, L-Band (option)
Transport Stream Inputs	2 BNC, 75 ohms, configurable as DVB-ASI or SMPTE 310M 2 BNC, 75 ohms, additional for DVB-ASI hierarchical modulation
Analog video Input (option)	2 BNC, 75 ohms
Audio Input (option)	2 x 5-pin XLR, 1 BNC, composite (BTSC/NICAM)
Back Porch/Sync and
Timing Output	1 BNC, 75 ohms
10 MHz Reference Input	1 BNC, 50 ohms
1 PPS Reference Input	1 BNC, User Selectable 50 ohms or Hi-Z termination
10 MHz Reference Output	1 BNC, 50 ohms, front access
1 PPS Reference Output	1 BNC, 50 ohms, front access
Ethernet	1 front, DHCP-enabled customer access 1 rear, transmitter network backbone interface (SNMP)
GPS Antenna Input (option)	1 SMA, 50 ohms
RF Monitor Output	1 SMA, 50 ohms, front access
AC Power Input	100 to 240 VAC, 47 to 63 Hz, auto-ranging
Environmental	32° to 122° F (0° to 50° C) up to 14,764 ft (4,500 m) AMSL, de-rate 35.6° F (2° C) per 984 ft (300 m) of elevation 95% relative humidity, non-condensing
Physical	19 in. EIA rack standard, 2RU high, 19 in. depth

ATSC
Standards	ATSC A/153, A/153, A/110:2011
Maximum Power Output	100 mW average
Regulation of Output Power	<0.25 dB
Pilot Frequency Stability	±150 Hz/month without PFC <0.5 Hz per 1% supply variation <50 Hz over ambient temperature range <100 Hz at 5 minutes during warm-up
Pilot Frequency Offsets1	Any frequency within band plan, 2 mHz resolution
Response Variation	0.2 dB, typical
Group Delay	2 ns, typical
Phase Noise	<104 dBc/Hz @ 20 kHz offset (ATSC A/64)
Spurious Output2 In Band	-68 dB (-45 dB as measured in 30 kHz RBW)
Adjacent Channels	-68 dB (-45 dB as measured in 30 kHz RBW)
All Others	-40 dB
Signal-to-Noise Ratio	35 dB, typical
Note: 1 High-stability external 10 MHz reference or optional built-in GPS required for PFC 2 Signals referenced to center channel, at rated output, measured in 30 kHz RBW

DVB-T/H, DVB-T2, DAB, ISDB-Tb, DMB-T/H
Maximum Power Output	100 mW average
Regulation of Output Power	<0.25 dB
Pilot Frequency Stability	±150 Hz/month without PFC <0.5 Hz per 1% supply variation <50 Hz over ambient temperature range <100 Hz at 5 minutes during warm-up
Frequency Offsets1	Any frequency within band plan, 2 mHz resolution
Response Variation	0.2 dB, typical
Group Delay	2 ns, typical
Phase Noise	10 Hz…………<-55 dBc/Hz 100 Hz……… <-85 dBc/Hz 1 kHz…………<-90 dBc/Hz 10 kHz……… <-95 dBc/Hz 100 kHz……<-112 dBc/Hz 1 MHz……… <-130 dbc/Hz
Spurious Output2
In Band	-68 dB (-45 dB as measured in 30 kHz RBW)
Adjacent Channels	-68 dB (-45 dB as measured in 30 kHz RBW)
All Others	-40 dB
Modulation Error Ratio	38 dB, typical
Central Carrier Suppression	>75 dB relative to average power
Out of Band Shoulders	>50 dB, uncorrected, at rated power
Note: 1 High-stability external 10 MHz reference or optional built-in GPS required for PFC 2 Signals referenced to center channel, at rated output, measured in 30 kHz RBW

Analog
Transmission Standards	B, G, M, N, D, K, I NTSC/PAL
Video Modulation	C3F neg.
Audio Modulation
Sound Carrier	1 F3E; BTSC
Sound Carrier	2 F3EH; NICAM 728

Video
Number of Inputs	2
Impedance	75 ohms
Return Loss Up to 6 MHz	>34 dB
Input Crosstalk	>70 dB

Modulation
Nominal Video Level	1 V pk-pk
Video Gain Control Range	-3 to 6
Gain Control Mode	Manual
Sync Pulse Restoration	Yes
Back Porch Clamping	Yes
50 Hz Rejection	>33 dB
Burst Phase Distortion	<0.5 dB
Burst Amplitude Distortion	<1%
White Level Limitter	5 to 25%
Residual Carrier Adjustment	5 to 25%

Linear Distortions
Receiver Group Delay Correction	According to standard
Sideband Frequency Response	According to standard
Video Frequency Response	According to standard
Group Delay and Impulse Response
Without Receiver Precorrection	60 pk-pk ns
Square Wave Distortion	50 Hz <1% 5 kHz <1% 250 kHz <1%
Square Wave O/S	15 and 250 kHz <1.5%
2T Pulse PB	<2%
K2T	<2%
20T Pulse K Factor	<2%
Chrominance to Luminance Delay	20 ns
Static Nonlinearity	0.99
Differential Phase	<±1°
ICPM	<0.5°
Video IM	<-52 dB
IM BT-TT1-TT2	<-68 dB

Audio
Number of Inputs	2
Switching Criteria	Audio follows video

Input Resistance
Hi Mode	>10 k ohms
Low Mode 600	±12 ohms

Common Mode Rejection
40 to 300 Hz	>46 dB
Up to 15 kHz	>30 dB

Modulation Sensitivity
30 kHz Deviation @ 500 Hz	0 to 12 dBu
Adjustment Steps	<0.1 dB

IRT Dual Carrier System Linear Distortion
Amplitude Deviation 40 to 15 kHz	<±0.3 dB
Stereo Crosstalk	100 to 15 kHz @ 30 kHz
Deviation	<-32 dB
40 to 100 Hz max 6 dB Per
Octave Channel Crosstalk
40 to 15 kHz	>70 dB

Nonlinear Distortion
Harmonic Distortion 40 to 15 kHz @ 50 kHz Deviation	<0.5%
Unwanted Modulation
Quasi-Peak Reference to 30 kHz Deviation
Unweighted	<-58 dB
Weighted	<-62 dB
Asynchronous AM	<-46 dB
Synchronous AM	<-46 dB

Difference Carrier Noise
Up to 100 kHz VF Weighted	<-44 dB