Harris Corporation :: Broadcast Communications / Flexivamze.com.ge/uploadfiles/Radio Transmissions/Flexiva/Flexiva.pdf · Flexiva 1 • Best-in-classpowerefficiency—lowestoperatingcosts

Flexiva™Air-Cooled FM Transmitter for Analog and Digital Standards

The Harris® Flexiva™ air-cooled FM solid-state transmitter familyprovides today’s broadcaster with a single transmission platformcapable of analog and digital operation. Incorporating field-provenHarris technology, Flexiva transmitters deliver world-classperformance, reliability and quality.

Flexiva is designed for low- and high-power requirements, up to 40 kW, while utilizing themost compact design on the market today. Flexiva continues the legacy of the highlysuccessful line of Harris FM transmitters and combines innovative, new quad-mode RFamplification and software-defined exciter technology to take FM transmission to the nextlevel.

Featuring Harris PowerSmart® technology in its architecture, the Flexiva line offersunmatched efficiency that makes it ideal for all FM applications. The 50-volt LDMOSdevice technology delivers a dramatic increase in power density, lower operating costsand reduced cost of ownership over the life of the transmitter.

As the digital transmission leader, Harris has developed a solid core competency backedby years of experience in the complex technical areas that are essential for maximumtransmitter performance. Customers can also count on Harris for implementation, and thecompany offers a range of support options from standard 24/7 telephone technicalassistance and parts to installations, training, full system design and field maintenancecontracts.

FEATURES

1 www.broadcast.harris.comFlexiva

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• Best-in-class power efficiency — lowest operating costs• Extremely high power density; compact and lightweight space-saving design• Latest state-of-the-art LDMOS-FET power amplifier technology• Quad-mode operation: FM, FM + HD Radio™, HD Radio™ only or DRM+• Fully broadband modules, 88 – 108 MHz—requires no tuning or adjustments• 1:1 power amplifier (PA) module to power supply (PS) redundancy• Hot-pluggable RF amplifier modules and auto-ranging power supplies• Proportional VSWR foldback for safe operation at reduced power into marginal loads (icy antenna,

etc.)• Automatic restart after AC mains interruption; returns to previous operational mode• SNMP web-enabled remote graphic user interface (GUI)• In-depth diagnostics via an easy-to-use front-panel control

PRODUCT DETAILS

The Flexiva Advantage

Maximum EfficiencyFlexiva is the most efficient solid-state FM transmitter available. Leveraging theHarris PowerSmart architecture, 50-volt LDMOS device technology delivers adramatic increase in power density, lower operating costs and reduced cost ofownership over the life of the transmitter.

Compact Footprint and Lightweight DesignFlexiva is the most compact FM transmitter on the market, with a significantly reduced size comparedwith other products in its power class. Ideally suited to fit in crowded, shared transmitter sites, Flexivareduces the cost and space required in the facility, simplifies installation, lowers shipping costs andallows for easier maintenance.

Highest Power – Elegant SimplicityFlexiva achieves market-leading power levels (up to 40 kW). Featuring distributed control architecture,Flexiva delivers outstanding reliability, and enables soft failure operation and simple serviceability.

Low to High Power, Analog or DigitalFrom very low power (5 W) to very high power (40 kW and beyond), the Flexiva family does it all.Whether it is 50 W of analog FM or 40 kW of



FM+HD that is needed, Flexiva transmitters all provide the same outstanding value.

Improved Up TimeHot-pluggable, redundant power amplifier (PA) and universal power supply (PS) modules make on-airservicing a breeze and eliminate costly service interruptions.

Reduced Service CostsLightweight and universal PA modules (broadband from 88 to 108 MHz; 4.5 kg) and PS modules(auto-ranging 90 to 264 VAC, 47 to 63 Hz; 2.5 kg) facilitate overnight/same-day shipment from acentralized depot for simplified and cost-effective spares holding. The use of lightweight modules virtuallyeliminates two-person lift requirements for routine maintenance. Flexiva also supports the simplereplacement of pre-tuned amplifier pallets in the field, eliminating the need for complex tuning after FETreplacement.

Smooth UpgradeabilityFlexiva features world-class software-defined exciter technology, allowing for a seamless transition fromanalog to digital in the user’s time frame.

Advanced Digital PrecorrectionHarris Real-Time Adaptive Correction (RTAC™) is an advanced type of digital precorrection that enablesthe exciter to more fully utilize the transmitter power amplifier, yet maintain spectral mask compliance ofthe digital signal.

Reliable, Distributed System ControlThe Flexiva transmitter uses a central interface to a distributed control system. Featuring extensiveprotection and control capabilities, the main system control is located in the Flexiva amplifier bay andcommunicates with the exciter for mode switching. The distributed nature of the design provides forfast-acting independent protection at the module level for maximum reliability. A liquid-crystal controlscreen allows easy review of all operational parameters and easy diagnosis of any potential equipmentproblems. Front-panel buttons and bright LED indicators allow for simple control and feedback on all thekey operating parameters. The navigation buttons allow for quick review, setup and recall of all menusvia the front-panel screen. By simply connecting a PC to either the front- or rear-panel RF-45 jack, theuser can monitor and control all the settings on the PC.

Advanced Global Monitoring and ControlIn addition to local control, the Flexiva transmitter can be controlled from anywhere in the world with anintuitive, browser-based graphical user interface (GUI) over TCP/IP via a telecom or network connectionwith password protection.

Full Simple Network Management Protocol (SNMP) facilities are provided for network management ofthe entire transmission system using industry-standard MIB protocols.



Remote CommunicationThe following remote interfaces are available:• GUI• Ethernet network connection RJ-45 (10/100Base-T) with TCP/IP protocol• Automated remote alarms in the event of a fault, which are sent via SNMP or e-mail with theconnection to a network• Simple, parallel interface to panels and remote control systems

Multi-System Controller (MSC)To support greater redundancy, the Multi-System Controller (MSC) supports a range of backup options,including 1+1, full N+1 and dual-transmitter installations. The MSC monitors and controls the transmittersystems and controls RF switching. Common PartsThe complete Flexiva line utilizes the same major parts — from the highest-power, air-cooled transmitterto the compact, low-power systems.

Advanced Digital Pre-CorrectionThere are two types of precorrection used: linear and nonlinear. Linear precorrection is for the non-idealamplitude response and time response of the transmission system, including the power amplifier and anybandpass filters. Linear precorrection is helpful in optimizing the modulation performance of thetransmitted digital signal so that less equalization is required at the receiver. Nonlinear precorrection isfor the two major types of nonlinearity (AM->AM and AM->PM) in the RF power amplifier, which causeundesired spectral components and poor RF mask compliance.

AM to AM nonlinearity causes the RF power amplifier’s output amplitude to not accurately track the inputamplitude. Typically, this nonlinearity occurs near the peak output power of the amplifier, wheresaturation effects cause the output response to flatten as the input continues to increase and where theamplifier output goes to zero. AM to PM nonlinearity causes the RF power amplifier’s output phase to nottrack the input phase. The amplifier acts like a phase modulator as the power output varies to follow theinput signal, producing undesirable sidebands.

Precorrection can be implemented in many ways. In order of sophistication, they are:• Analog fixed precorrection• Digital fixed precorrection• Digital adaptive precorrection• Digital, memoryful, adaptive precorrection (RTAC)

Fixed precorrection can improve the system linearity for one specific operating point, but must bemanually readjusted for changes in power output, antenna load impedance, temperature or operatingpoint. Adaptive digital precorrection utilizes an RF sample taken at the output of the RF amplifier toautomatically adjust the shape of the precorrection to continuously optimize the linearization of thesystem. The bandwidth limitation, especially in tube-type amplifiers (e.g., IOT), along with the storedenergy in tuned circuits, introduces “memory effects.”

Digital, adaptive, memoryful precorrection can correct for these “memory effects” in addition to simpleAM to AM and AM to PM distortions. Even wideband, solid-state RF amplifiers have some memoryeffects that make the shape of the nonlinearities change with the digital modulation data states. As theonly system with simultaneous linear and nonlinear, adaptive and memoryful precorrection, RTAC



provides the highest level of correction to all types of RF amplifiers.



IMAGES/DIAGRAMS

Flexiva ConfigurationEach Flexiva transmitter combines an FM exciter and one or more amplifier bays — each with variousconfigurations of PA modules to achieve the rated power.

The amplifier bays contain several major systems:

Power Amplifier ModuleThis hot-pluggable module features a pair of broadband (88-108 MHz) RF PAs that require no useradjustments. The PA modules are identical and fully interchangeable in each Flexiva transmitter. Eachamplifier can be re-biased on-the-fly for operation in FM, FM + HD Radio and HD Radio only, or DRM+mode.

Power Supply ModuleThis hot-pluggable module is a 2400 W 48 V PS with a .98 power factor and mains input range of 90-264V. The PS interface provides on/off functionality to the power supplies, a fan tachometer alarm andredundant feed to the cooling system. Each module also has +5 V output to redundantly drive thelow-voltage control circuits and 1:1 power supply to power amplifier redundancy. Each 48 V powersupply’s output is also fed to the dual IPA for maximum redundancy.



Cooling SystemThe air cooling system includes internal redundant fans that pull cool air from the front through aremovable filter, allowing exhaust to exit through the rear of the transmitter. Systems integrated in Harriscabinets feature top exhaust to support ducting and, optionally, can have ducted air input plenum topermit top, bottom or rear air input.

Control SystemFeaturing extensive protection and control capabilities, the main system control is located in the Flexivaamplifier bay and communicates with the exciter for mode switching. Each PA module has dedicatedcontrol and monitoring to support on/off functionality and alarms for reflected power, temperature andcurrent overloads. The control systems also provide for remote access via a parallel, SNMP andWeb-enabled GUI.

SPECIFICATIONS

Specifications and designs are subject to change without notice.

GeneralFrequency Range 87.5 to 108 MHzOperating Modes “Quad-Mode” on-the-fly switching between FM HD only, FM+HD or DRM+

Power Output

Model Analog FMPower W

FM+HD HD Only

-20 dBcPower W

-14 dBcPower W

-10 dBcPower W

-20 dBcPower W

-14 dBcPower W

-10 dBcPower W

FAX50 1 to 55 45 35 27 20 19 17

FAX150 11 to 165 135 105 80 60 58 51

FAX300 30 to 330 270 210 160 120 116 103

FAX500 50 to 550 450 350 267 200 194 171

FAX1K 100 to 1100 900 700 534 400 388 342



FAX2K 200 to 2200 1800 1400 1068 800 766 684

FAX3K 300 to 3300 2700 2100 1602 1200 1164 1026

FAX3.5K 350 to 3850 3150 2450 1869 1400 1358 1197

FAX5K 500 to 5500 4500 3500 2670 2000 1940 1710

FAX10K 1000 to11000

9000 7000 5300 4000 3900 3400

FAX20K 2000 to22000

18000 14000 10700 8000 7800 6800

RF Output Connector FAX50/150/300/500: Type N female, 50 ohmsFAX1K/2K/3K: DIN 7-16 male or EIA 1-5/8 unflanged, 50 ohmsFAX5K/10K: EIA 1-5/8 unflanged, 50 ohmsFAX20K: EIA 3-1/8 flanged, 50 ohms

AC Mains Requirement FAX50: 90 to 264 VAC single phase, 47 to 63 HzFAX150: 90 to 264 VAC single phase, 47 to 63 HzFAX500: 90 to 264 VAC single phase, 47 to 63 HzFAX500: 90 to 264 VAC single phase, 47 to 63 HzFAX1K: 90 to 264 VAC single phase, 47 to 63 HzFAX2K: 190 to 264 VAC single phase, 47 to 63 HzFAX3K: 190 to 264 VAC, single phase, 47 to 63 Hz

Three-phase available as option onFAX2K and FAX3K

FAX5K: 190 to 264 VAC, 47 to 63 Hz single phase or 3 phase, fieldconfigurableFAX10K: 190 to 264 VAC, 47 to 63 Hz single phase or 3 phase, fieldconfigurableFAX20K: 190 to 264 VAC, 47 to 63 Hz single phase or 3 phase, fieldconfigurable

Configurable on-site for single- orthree-phase connection

200 to 264 VAC single phase,200 to 264 VAC delta,200 to 264 VAC wye, or350 to 450 VAC wyeWill continue to operate at reduced power on loss of 1 or 2 phases

Flexiva Power Efficiency andConsumption(Typical, at nameplate power level, in FMonly mode)

FAX50: 24% 208 WFAX150: 50% 300 WFAX500: 64% 780 WFAX1K: 64% 1,563 WFAX2K: 66% 3,030 WFAX3K: 67% 4,478 WFAX5K: 68% 7,308 WFAX10K: 70% 14,000 WFAX20K: 70% 28,000 W



Power Factor (displacement) 0.98 typical

Power Stability ≤±0.25 dB

Asynchronous AM S/N Ratio 55 dB minimum below equivalent 100% amplitude modulation by 400 Hzusing 75 μs de-emphasis

Synchronous AM S/N Ratio 50 dB minimum below equivalent 100% amplitude modulation with 75 μsde-emphasis and 400 Hz high-pass filter (FM deviation ±75 kHz by a 1 kHzsine wave). Measured at wideband input

RF Harmonic and Spurious Suppression Internal harmonic filter meets or exceeds all FCC, CCIR and ITUrequirements

VSWR Protected against open or short circuit, all phase angles. Capable ofoperation into infinite VSWR with user-adjustable foldback threshold.Factory preset to 4% of nominal nameplate power (VSWR = 1.5:1)

Environmental

Altitude 15,000 ft (4,573 M) elevation above sea level

Ambient Temperature Range 32° to 122° F (0° to 50° C), full performance at sea level, upper limitde-rated 35.6° F (2° C) per 1000 ft. (300 m) elevation AMSL.Maximum power de-rated 5% 113° to 122° F (45° to 50° C)

Humidity 95%, non-condensing

Mechanical

Dimensions Dimensions Standard EIA rack 19 in. (48.3 cm); 1RU = 4.45 cmFAX50: 2RU 12 in. (30.5 cm) depthFAX150/300/500: 2RU 23.5 in. (60 cm) depthFAX1K: 3RU, 23.5 in. (60 cm) depthFAX2K/3K: 5RU, 23.5 in. (60 cm) depthFAX5K/10K: 16RU, 42 in. (107 cm) depthFAX20K: 44RU, 46 in. (117 cm) depth

Weight (approximate, all modulesinstalled)

FAX50 12 lbs (5.5 kg)FAX150: 19 lbs (8.6 kg)FAX300: 22 lbs (10 kg)FAX500: 24 lbs (11 kg)FAX1K: 35 lbs (16 kg)FAX2K: 49 lbs (22 kg)FAX3K: 63 lbs (28.90 kg)FAX5K: 110 lbs (50 kg)FAX10K: 160 lbs (73 kg)



FAX20K: 370 lbs (145 kg)

Remote Control

Parallel DB37-female, GPIO, Relay contacts: 25 mA @ 24 VDC, Digital Inputs (TTLlevel) Front & rear RJ-45 connectors Ethernet/IP provide

Web Interface Allows full control and monitoring of all parameters via Web browser

SNMP SNMP compliant with IRT TC-MIB-configurable e-mail alarms

Exciter/Modulator An internal FM modulator is integrated into the FAX low-power seriestransmitters. (FAX150/…/FAX3K)FAX5K, FAX10K and FAX20K have an optional internal modulator or canbe driven from an external exciter. Data below is with the FAX internalmodulatorDigital modulations such as HD Radio™

General

Modulation Type FM digitally synthesized direct to channel in 10 kHz increments

FM Modulation Capability Greater than ±300 kHz

Frequency Stability ±150 Hz, 32° to 122° F (0° to 50° C) using high-accuracy internal TCXO. 10MHz input for synchronization to external (GPS) reference. Automaticswitching to internal oscillator if external reference fails. Meets or exceedsstandard NRSC-5A emission limits in all modes

FM Modulation Capability Greater than ±300 kHz

Modulation Indication Auto-ranging (14%/140% full scale) GUI modulation display with peak hold.Web

Internal Composite Peak Limiter

N+1 Control Serial/IP control of 8 presets of frequency, input, mode and output power

Input/Output

AES3 Audio Inputs 2 auto-switching AES3 inputs, female XLR, 110 ohms balanced; -2.8 dBfsnominal; GUI adjustable level from 0 dBfs to -15 dBfs in 0.1 dB steps for±75 kHz deviation; input sample rate 32 to 96 kHz

Analog L/R Inputs Female XLR, >10K ohms, balanced, resistive; default level is +10 dBu for±75 kHz deviationLevel GUI adjustable from -10 dBV to +10 dBV

Analog Composite Input 2 BNC inputs (1 balanced, 1 unbalanced);balanced impedance is 10 K ohms or 50 ohms (selectable);unbalanced is 10 K ohms



Input Level 3.5 V pk-pk for ±75 kHz deviation; adjustable 2 to 5 V pk-pk

External SCA Inputs 2 BNC female, unbalanced; >10 K ohms; 1.5 V pk-pk nominal for ±7.5 kHz(10%) deviation of main carrier; adjustable from 1 to 4 V pk-pk

External 10MHz Clock Input BNC female, unbalanced, 50 ohms, -10 dBm to +10 dBm

External 1 PPS Clock Input BNC female, unbalanced, 50 ohms, TTL level

RF Sample Out BNC jack 2, front- and rear-panel -40 dBc, post harmonic filter front panel

19 kHz Pilot Sync Output BNC female, unbalanced, 50 ohms resistive, sinewave, phase adjustable,AC coupled, 4.5 V pk-pk nominal, unterminated

Ethernet Ports 2 RJ-45 on main processor board; 2 RJ-45 on Exgine board (HD versiononly); all Ethernet ports 10/100; supports static or dynamic IP address

USB Port Front-panel USB type-A connector; USB 1.1/2.0 compliant; supportsconfiguration save/restore and software updates via flash drive

Wideband Analog Input Performance

FM Signal-to-Noise Ratio 86 dB below ±75 kHz deviation at 400 Hz; measured in a 10 Hz to 100 kHzbandwidth with 75 s de-emphasis; DIN "A" weighting

Amplitude Response ±0.01 dB 20 Hz to 53 kHz;±0.03 dB, 53 kHz to 100 kHz

Total Harmonic Distortion .01% THD over stereo sub band (10 Hz to 53 kHz) with 75 microsecondde-emphasis

Intermodulation Distortion CCIF: 0.005% (14/15 kHz, ratio 1:1); SMPTE: 0.005% (60/7000 Hz, Ratio1:1)

Transient Intermodulation Distortion(DIM)

0.005% (2.96 kHz square wave/14 kHz sinewave modulation)

Slew Rate 11.8 V/us - symmetrical

Phase Response Variation ±0.05° from linear phase, 10 Hz to 100 kHz

Group Delay Variation ±5 ns, 10 Hz to 53 kHz, ±30 ns, 53 to 100 kHz

Stereo Generator Performance (AES3 or Analog Inputs)

Modes Stereo, Mono L+R, Mono L, and Mono R; remote controllable

Pre-emphasis Selectable 0, 25, 50, or 75 microseconds

Stereo Pilot Tone 19 kHz ±0.03 Hz; injection adjustable 0% to 12% in 0.05% steps;Nominal: 9%. 38 kHz, 57 kHz, 76 kHz, 95 kHz suppression: 80 dB below±75 kHz deviation

Stereo Separation 60 dB, 10 Hz to 15 kHz

Dynamic Stereo Separation 60 dB, 10 Hz to 15 kHz*

Stereo Amplitude Response ±0.1 dB, 10 Hz to 15 kHz referenced to selected pre-emphasis curve, LPFcutoff selectable

Stereo Signal to Noise Ratio(L or R)

85 dB below 100% modulation at 400 Hz; measured in a 10 Hz to 22 kHzbandwidth with 75 μs de-emphasis and DIN “A” weighting

Stereo Total Harmonic Distortion 0.02%, any modulating frequency 10 Hz to 15 kHz, in bandwidth 10 Hz to



22 kHz with 75 μs de-emphasis

Stereo Intermodulation Distortion (L or R) CCIF: 0.02% Note 1; (14/15 kHz 1:1), SMPTE: 0.02% (60 and 7000 Hz 1:1)

Transient Intermodulation Distortion(DIM)

0.02%; (2.96 kHz square wave/14 kHz sinewave modulation)

Linear Crosstalk 90 dB below 100% modulation reference (AES3 input); L+R to L-R or L-R toL+R due to amplitude and phase matching of L&R channels (10 Hz-15 kHz)

Nonlinear Crosstalk 80 dB below 100% modulation reference; L+R to L-R or L-R to L+R due todistortion products

Audio Overshoot Less than 0.16 dB

Mono Performance (AES3 or analog input)

Pre-emphasis Selectable 0, 25, 50 or 75 microseconds

FM Mono Signal-to-Noise Ratio 86 dB below 100% modulation at 400 Hz; measured in a 10 Hz to 22 kHzbandwidth with 75 μs de-emphasis and DIN “A” weighting

Amplitude Response ±0.05 dB, referenced to selected pre-emphasis curve (no low-pass filter)

Mono Total Harmonic Distortion 0.01% THD, 10 Hz to 22 kHz bandwidth

Mono Intermodulation Distortion CCIF: 0.005% (14/15 kHz 1:1); SMPTE: 0.005% (60/7000 Hz 1:1)

Mono Transient IntermodulationDistortion (DIM)

0.005% (2.96 kHz square wave/14 kHz sinewave)

External SCA, RBDS Performance

SCA Format Externally generated, analog FM subcarriers in the range 53-99 kHz

SCA Sub-band Amplitude Response ±0.5dB, 40 to 100 kHz; high-pass filtered

SCA Channel FM Signal-to-Noise Ratio 80 dB below +6 kHz subcarrier deviation at 400 Hz with 150 μSde-emphasis

Harmonic Distortion less than 0.2% in audio pass-band of SCA generator

Intermodulation Distortion SMPTE (60 and 7000 Hz, 1:1): 0.2% or less, no pre/de -emphasis, SCAgenerator low-pass filter bypassed

Crosstalk, SCA to Stereo 80 dB below 100% modulation, L or R channel with 75 μS de-emphasis

Crosstalk, Stereo to SCA 80 dB below 100% modulation referenced to ±6 kHz deviation and 150 μSde-emphasis

Crosstalk, SCA to SCA 80 dB below 100% modulation (referenced to +6 kHz deviation and 150 μSde-emphasis per channel)

Compliance RoHS 2002/95/EC, FCC, EC, IC, ITU, SARFTCompliant: YesR&TTE 1999/5/EC Compliant: Yes





Harris Corporation :: Broadcast Communications / Flexivamze.com.ge/uploadfiles/Radio Transmissions/Flexiva/Flexiva.pdf · Flexiva 1 • Best-in-classpowerefficiency—lowestoperatingcosts

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