The Harris® Flexiva™ air-cooled FM solid-state transmitter family provides today’s broadcaster with a single transmission platform capable of analog and digital operation. Incorporating field-proven Harris technology, Flexiva transmitters deliver world-class performance, reliability and quality.
Flexiva is designed for low- and high-power requirements, up to 20 kW, while utilizing the most compact design on the market today. Flexiva continues the legacy of the highly successful line of Harris FM transmitters and combines innovative, new quad-mode RF amplification and software-defined exciter technology to take FM transmission to the next level.
Featuring Harris PowerSmart® technology in its architecture, the Flexiva line offers unmatched efficiency that makes it ideal for all FM applications. The 50-volt LDMOS device technology delivers a dramatic increase in power density, lower operating costs and reduced cost of ownership over the life of the transmitter.
As the digital transmission leader, Harris has developed a solid core competency backed by years of experience in the complex technical areas that are essential for maximum transmitter performance. Customers can also count on Harris for implementation, and the company offers a range of support options from standard 24/7 telephone technical assistance and parts to installations, training, full system design and field maintenance contracts.
The Flexiva Advantage
Flexiva is the most efficient solid-state FM transmitter available. Leveraging the Harris PowerSmart architecture, 50-volt LDMOS device technology delivers a dramatic increase in power density, lower operating costs and reduced cost of ownership over the life of the transmitter.
Compact Footprint and Lightweight Design
Flexiva is the most compact FM transmitter on the market, with a significantly reduced size compared with other products in its power class. Ideally suited to fit in crowded, shared transmitter sites, Flexiva reduces the cost and space required in the facility, simplifies installation, lowers shipping costs and allows for easier maintenance.
Highest Power – Elegant Simplicity
Flexiva achieves market-leading power levels (up to 20 kW). Featuring distributed control architecture, Flexiva delivers outstanding reliability, and enables soft failure operation and simple serviceability.
Low to High Power, Analog or Digital
From very low power (5 W) to very high power (20 kW and beyond), the Flexiva family does it all. Whether it is 50 W of analog FM or 20 kW of
FM+HD that is needed, Flexiva transmitters all provide the same outstanding value.
Improved Up Time
Hot-pluggable, redundant power amplifier (PA) and universal power supply (PS) modules make on-air servicing a breeze and eliminate costly service interruptions.
Reduced Service Costs
Lightweight 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 a centralized depot for simplified and cost-effective spares holding. The use of lightweight modules virtually eliminates two-person lift requirements for routine maintenance. Flexiva also supports the simple replacement of pre-tuned amplifier pallets in the field, eliminating the need for complex tuning after FET replacement.
Flexiva features world-class software-defined exciter technology, allowing for a seamless transition from analog to digital in the user’s time frame.
Advanced Digital Precorrection
Harris Real-Time Adaptive Correction (RTAC™) is an advanced type of digital precorrection that enables the exciter to more fully utilize the transmitter power amplifier, yet maintain spectral mask compliance of the digital signal.
Reliable, Distributed System Control
The Flexiva transmitter uses a central interface to a distributed control system. Featuring extensive protection and control capabilities, the main system control is located in the Flexiva amplifier bay and communicates with the exciter for mode switching. The distributed nature of the design provides for fast-acting independent protection at the module level for maximum reliability. A liquid-crystal control screen allows easy review of all operational parameters and easy diagnosis of any potential equipment problems. Front-panel buttons and bright LED indicators allow for simple control and feedback on all the key operating parameters. The navigation buttons allow for quick review, setup and recall of all menus via the front-panel screen. By simply connecting a PC to either the front- or rear-panel RF-45 jack, the user can monitor and control all the settings on the PC.
Advanced Global Monitoring and Control
In addition to local control, the Flexiva transmitter can be controlled from anywhere in the world with an intuitive, browser-based graphical user interface (GUI) over TCP/IP via a telecom or network connection with password protection.
Full Simple Network Management Protocol (SNMP) facilities are provided for network management of the entire transmission system using industry-standard MIB protocols.
The following remote interfaces are available:
• 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 the connection 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 transmitter systems and controls RF switching.
The complete Flexiva line utilizes the same major parts — from the highest-power, air-cooled transmitter to the compact, low-power systems.
Advanced Digital Pre-Correction
There are two types of precorrection used: linear and nonlinear. Linear precorrection is for the non-ideal amplitude response and time response of the transmission system, including the power amplifier and any bandpass filters. Linear precorrection is helpful in optimizing the modulation performance of the transmitted digital signal so that less equalization is required at the receiver. Nonlinear precorrection is for the two major types of nonlinearity (AM->AM and AM->PM) in the RF power amplifier, which cause undesired spectral components and poor RF mask compliance.
AM to AM nonlinearity causes the RF power amplifier’s output amplitude to not accurately track the input amplitude. Typically, this nonlinearity occurs near the peak output power of the amplifier, where saturation effects cause the output response to flatten as the input continues to increase and where the amplifier output goes to zero. AM to PM nonlinearity causes the RF power amplifier’s output phase to not track the input phase. The amplifier acts like a phase modulator as the power output varies to follow the input 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 be manually readjusted for changes in power output, antenna load impedance, temperature or operating point. Adaptive digital precorrection utilizes an RF sample taken at the output of the RF amplifier to automatically adjust the shape of the precorrection to continuously optimize the linearization of the system. The bandwidth limitation, especially in tube-type amplifiers (e.g., IOT), along with the stored energy in tuned circuits, introduces “memory effects.”
Digital, adaptive, memoryful precorrection can correct for these “memory effects” in addition to simple AM to AM and AM to PM distortions. Even wideband, solid-state RF amplifiers have some memory effects that make the shape of the nonlinearities change with the digital modulation data states. As the only system with simultaneous linear and nonlinear, adaptive and memoryful precorrection, RTAC provides the highest level of correction to all types of RF amplifiers.
Each Flexiva transmitter combines an FM exciter and one or more amplifier bays — each with various configurations of PA modules to achieve the rated power.
The amplifier bays contain several major systems:
Power Amplifier Module
This hot-pluggable module features a pair of broadband (88-108 MHz) RF PAs that require no user adjustments. The PA modules are identical and fully interchangeable in each Flexiva transmitter. Each amplifier can be re-biased on-the-fly for operation in FM, FM + HD Radio and HD Radio only, or DRM+ mode.
Power Supply Module
This hot-pluggable module is a 2400 W 48 V PS with a .98 power factor and mains input range of 90-264 V. The PS interface provides on/off functionality to the power supplies, a fan tachometer alarm and redundant feed to the cooling system. Each module also has +5 V output to redundantly drive the low-voltage control circuits and 1:1 power supply to power amplifier redundancy. Each 48 V power supply’s output is also fed to the dual IPA for maximum redundancy.
The air cooling system includes internal redundant fans that pull cool air from the front through a removable filter, allowing exhaust to exit through the rear of the transmitter. Systems integrated in Harris cabinets feature top exhaust to support ducting and, optionally, can have ducted air input plenum to permit top, bottom or rear air input.
Featuring extensive protection and control capabilities, the main system control is located in the Flexiva amplifier bay and communicates with the exciter for mode switching. Each PA module has dedicated control and monitoring to support on/off functionality and alarms for reflected power, temperature and current overloads. The control systems also provide for remote access via a parallel, SNMP and Web-enabled GUI.
Specifications and designs are subject to change without notice.
|Frequency Range||87.5 to 108 MHz|
|Operating Modes||“Quad-Mode” on-the-fly switching between FM HD only, FM+HD or DRM+|
|-20 dBc Power W||-14 dBc Power W||-10 dBc Power W||-20 dBc Power W||-14 dBc Power W||-10 dBc Power 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 to 11000||9000||7000||5300||4000||3900||3400|
|FAX20K||2000 to 22000||18000||14000||10700||8000||7800||6800|
|RF Output Connector||FAX50/150/300/500: Type N female, 50 ohms
FAX1K/2K/3K: DIN 7-16 male or EIA 1-5/8 unflanged, 50 ohms
FAX5K/10K: EIA 1-5/8 unflanged, 50 ohms
FAX20K: EIA 3-1/8 flanged, 50 ohms
|AC Mains Requirement||FAX50: 90 to 264 VAC single phase, 47 to 63 Hz
FAX150: 90 to 264 VAC single phase, 47 to 63 Hz
FAX500: 90 to 264 VAC single phase, 47 to 63 Hz
FAX500: 90 to 264 VAC single phase, 47 to 63 Hz
FAX1K: 90 to 264 VAC single phase, 47 to 63 Hz
FAX2K: 190 to 264 VAC single phase, 47 to 63 Hz
FAX3K: 190 to 264 VAC, single phase, 47 to 63 Hz
Three-phase available as option on FAX2K and FAX3K
FAX5K: 190 to 264 VAC, 47 to 63 Hz single phase or 3 phase, field configurable
FAX10K: 190 to 264 VAC, 47 to 63 Hz single phase or 3 phase, field configurable
FAX20K: 190 to 264 VAC, 47 to 63 Hz single phase or 3 phase, field configurable
|Configurable on-site for single- or three-phase connection||200 to 264 VAC single phase,
200 to 264 VAC delta,
200 to 264 VAC wye, or
350 to 450 VAC wye
Will continue to operate at reduced power on loss of 1 or 2 phases
|Flexiva Power Efficiency and Consumption|
(Typical, at nameplate power level, in FM only mode)
|FAX50: 24% 208 W
FAX150: 50% 300 W
FAX500: 64% 780 W
FAX1K: 64% 1,563 W
FAX2K: 66% 3,030 W
FAX3K: 67% 4,478 W
FAX5K: 68% 7,308 W
FAX10K: 70% 14,000 W
FAX20K: 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 Hz using 75 μs de-emphasis|
|Synchronous AM S/N Ratio||50 dB minimum below equivalent 100% amplitude modulation with 75 μs de-emphasis and 400 Hz high-pass filter (FM deviation ±75 kHz by a 1 kHz sine wave). Measured at wideband input|
|RF Harmonic and Spurious Suppression||Internal harmonic filter meets or exceeds all FCC, CCIR and ITU requirements|
|VSWR||Protected against open or short circuit, all phase angles. Capable of operation into infinite VSWR with user-adjustable foldback threshold. Factory preset to 4% of nominal nameplate power (VSWR = 1.5:1)|
|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 limit de-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)
|Dimensions||Dimensions Standard EIA rack 19 in. (48.3 cm); 1RU = 4.45 cm
FAX50: 2RU 12 in. (30.5 cm) depth
FAX150/300/500: 2RU 23.5 in. (60 cm) depth
FAX1K: 3RU, 23.5 in. (60 cm) depth
FAX2K/3K: 5RU, 23.5 in. (60 cm) depth
FAX5K/10K: 16RU, 42 in. (107 cm) depth
FAX20K: 44RU, 46 in. (117 cm) depth
|Weight (approximate, all modules installed)||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)
|Parallel||DB37-female, GPIO, Relay contacts: 25 mA @ 24 VDC, Digital Inputs (TTL level) 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 series transmitters. (FAX150/…/FAX3K)
FAX5K, FAX10K and FAX20K have an optional internal modulator or can be driven from an external exciter. Data below is with the FAX internal modulator
Digital modulations such as HD Radio™
|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. 10 MHz input for synchronization to external (GPS) reference. Automatic switching to internal oscillator if external reference fails. Meets or exceeds standard 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|
|AES3 Audio Inputs||2 auto-switching AES3 inputs, female XLR, 110 ohms balanced; -2.8 dBfs nominal; 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 deviation
Level 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 version only); 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; supports configuration 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 kHz bandwidth 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 microsecond de-emphasis|
|Intermodulation Distortion||CCIF: 0.005% (14/15 kHz, ratio 1:1); SMPTE: 0.005% (60/7000 Hz, Ratio 1:1)|
|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, LPF cutoff selectable|
|Stereo Signal to Noise Ratio
(L or R)
|85 dB below 100% modulation at 400 Hz; measured in a 10 Hz to 22 kHz bandwidth 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 to L+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 to distortion 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 kHz bandwidth 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 Intermodulation Distortion (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 μS de-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, SCA generator 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 μS de-emphasis|
|Crosstalk, SCA to SCA||80 dB below 100% modulation (referenced to +6 kHz deviation and 150 μS de-emphasis per channel)|
|Compliance||RoHS 2002/95/EC, FCC, EC, IC, ITU, SARFT
R&TTE 1999/5/EC Compliant: Yes