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Maxiva™ VAX with PowerSmart® 3D
Maxiva™ VAX
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 The Maxiva™ VAX VHF air-cooled transmitter (formerly Platinum™ VAX) delivers the most advanced and proven VHF transmission platform, with exceptional power efficiency, an extended power range and a full operator feature set. These capabilities, along with the VAX transmitter’s flexible configurations and compact design, provide a solid foundation for broadcasters to build their network.

 
The Maxiva VAX incorporates the PowerSmart® solid-state architecture, along with 50-Volt LDMOS amplifier devices and the Maxiva M2X™ exciter technology with RTAC™,  to provide today’s broadcaster with leading power efficiency and unmatched signal performance. The VAX power amplifiers have a record of proven performance and reliability. This powerful blend of technologies provides best-in-class performance with respect to transmitter size, power efficiency and features. The modular design allows for simpler installation, easier maintenance and reduced total cost of ownership over the life of the transmitters. The VAX is available in very low-power to high-power output, suitable for almost any broadcast application.
 
Designed with future broadcasting needs in mind, the Maxiva VAX transmitter is capable of multiple modulation schemes for band III VHF analog or digital operation — including ATSC, ATSC MDTV, DVB-T/H, DVB T2, ISDB-Tb, DAB/DMB and future digital standards. Upgrading from analog to digital or to newer digital standards is readily accomplished to further extend the capability and life of the transmitter.
 
The Maxiva VAX transmitter is available as standalone units or in single- or dual-cabinet configurations, and has digital power levels up to 12 kW ATSC, 6.4 kW DVB-T/T2, 10 kW DAB/DMB, and analog levels up to 16 kW.
 
FEATURES
  1. PowerSmart technology, for best-in-class power efficiency and lowest operating costs
  2. Rugged, reliable design and construction
  3. Digital power levels up to 12 kW ATSC, 10 kW DAB and 6.4 kW COFDM TV
  4. Analog power levels up to 16 kW
  5. Field-proven Maxiva M2X exciter technology, allowing easy migration from analog to digital, or upgrading to new standards
  6. All-digital linear and nonlinear pre-correction, including exclusive Harris Broadcast Real-Time Adaptive Correction (RTAC™)
  7. Fully broadband PA modules — 168 to 242 MHz
  8. 1:1 PA module to power supply redundancy
  9. Hot-pluggable linear RF amplifier modules and DC power supplies
  10. Transmitter monitoring and in-depth diagnostics via easy-to-use, front-panel controls and indicators
SPECIFICATIONS

Specifications and designs are subject to change without notice.

General  
Frequency Range 168 to 242 MHz, in 1 Hz steps
Transmission Standards ATSC, DVB-T, DVB-T2, ISDB-Tb, Analog, DAB
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 N-female, 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 (0.98 typical)
 
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) 50 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/DMB Specification
Power Output (average) 50 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 Before Filter 35 dB minimum, >36 to 40 dB typical
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) 60 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
 
Analog
Power Output (vision peak of sync) 100 W to 16 kW models available, measured before IMD filter (see chart below). 10% sound
Analog Television Systems CCIR G, I, K, K1, M, N
Color Systems PAL, NTSC, SECAM
Sound Systems Monaural, BTSC, IRT, NICAM G
 
Analog Video Performance
Video Input 0.7 to 1.4 V, 75 ohms, 32 dB return loss
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
   
Differential Gain5 3%
Differential Phase5
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 and Harmonic Radiation -60 dB, or better
In-Channel Intermodulation Distortion -58 dB (-60 dB typical)
 
Analog Sound Performance
Modulation Capability ±120 kHz peak deviation
Monaural Input Adjustable 0 to 12 dBm, 600 ohms, balanced, >30 dB return loss
Pre-emphasis Selectable 75 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 
NICAM Sound Available
 
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

 

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 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.

5 Measured using a 5-step staircase signal. Test signal #3, CCIR REC. #421-3

 

VAX Power Levels

Model Number Dimensions (HxWxD) 
Weight (uncrated)
Number of Cabinets Number of PA Blocks Number of Final PA Modules RF Output Power (W)
VAX‐100AN 
VAX‐50DA 
VAX‐60AT 
VAX‐50DV/IS/T2
22.2x48.3x50cm 
8.72x19x19.7in 
(Rack optional1
20 kg 
44.1 lb 
0 or 1 0 1 100/10 
50 
60 
50
VAX‐250AN 
VAX‐150DA 
VAX‐180AT 
VAX‐100DV/IS/T2
22.2x48.3x50cm 
8.72x19x19.7in 
(Rack optional1
20 kg 
44.1 lb 
0 or 1 0 1 250/25 
150 
180 
100
VAX‐500AN 
VAX‐300DA 
VAX‐375AT 
VAX‐200DV/IS/T2
22.2x48.3x50cm 
8.72x19x19.7in 
(Rack optional1
25 kg 
55.0 lb 
0 or 1 0 1 500/50 
300 
375 
200
VAX‐1000AN 
VAX‐600DA 
VAX‐750AT 
VAX‐400DV/IS/T2
22.2x48.3x50cm 
8.72x19x19.7in 
(Rack optional1
25 kg 
55.0 lb 
0 or 1 0 2 1,000/100 
600 
750 
400
VAX‐2000AN 
VAX‐1250DA 
VAX‐1500AT 
VAX‐800DV/IS/T2
93.2x48.3x67.4cm 
36.7x19x26.5in 
(Rack optional1
 
286.5 kg 
632 lb 
0 or 1 1 4 2,000/200 
1,200 
1,500 
800
VAX‐3000AN 
VAX‐1875DA 
VAX‐2250AT 
VAX‐1200DV/IS/T2
93.2x48.3x67.4cm 
36.7x19x26.5in 
(Rack optional1
 
301.5 kg 
665 lb 
0 or 1 1 6 3,000/300 
1,875 
2,250 
1,200
VAX‐4000AN 
VAX‐2500DA 
VAX‐3000AT 
VAX‐1600DV/IS/T2
93.2x48.3x67.4cm 
36.7x19x26.5in 
(Rack optional1
 
316.5 kg 
698 lb 
0 or 1 1 8 4,000/400 
2,500 
3,000 
1,600
VAX‐6000AN 
VAX‐3750DA 
VAX‐4500AT 
VAX‐2400DV/IS/T2
In 44RU Rack: 219.7x59.5x94.8cm 86.5x23.4x37.3in 
(2 racks for dual drive)
 
541 kg 
1,193 lb 
 
1 or 2 2 12 6,000/600 
3,750 
4,500 
2,400
VAX‐8000AN 
VAX‐5000DA 
VAX‐6000AT 
VAX‐3200DV/IS/T2
In 44RU Rack: 219.7x59.5x94.8cm 86.5x23.4x37.3in 
(2 racks for dual drive)
580 kg 
1,279 lb 
1 or 2 2 16 8,000/800 
5,000 
6,000 
3,200
VAX‐12000AN
VAX‐7500DA 
VAX‐9000AT 
VAX‐4800DV/IS/T2
In 2x44RU Racks, total: 
219.7x119x94.8cm 
86.5x46.9x37.3in 
658 kg 
1,551 lb 
2 3 24 12,000/1,200
7,500 
9,000 
4,800
VAX‐16000AN
VAX‐10000DA
VAX‐12000AT
VAX‐6400DV/IS/T2
In 2x44RU Racks, total: 
219.7x119x94.8cm 
86.5x46.9x37.3in 
753 kg 
1,660 lb 
2 4 32 16,000/1,600
10,000 
12,000 
6,400

1 37RU basic rack, 37RU deluxe rack, or 44RU deluxe rack

Modulations 
AN - Analog 
DA - DAB 
AT - ATSC 
DV - DVB-T 
T2 - DVB-T2 
IS - ISDB-Tb