Sign up joe stevens pascal intermodulation product calculator for. The program can plot areas where possible interference may exist due to intermodulation products within a reference stations coverage area. Interaction of intermodulation products between dut and. Intermodulation 1966 a simple matter of conviction 1967 bill evans and jim hall chronology. Channels 1, 2, 5, 10 and 12 will not give rise to the production of third order intermodulation products.
After youve downloaded crossover check out our youtube tutorial video to the left, or visit the crossover chrome os walkthrough for specific steps. To do this, the user defines a reference station that can be specified manually by supplying the transmitter parameters including the coordinates, frequency, erp and antenna. Intermodulation interference calculations in the landmobile. Visible intermodulation products are seen as small spurs at 280 mhz and 265 mhz. The intermod software is designed for professional audio wireless microphone users, av installers of wireless devices, frequency coordinators, and broadcasters. Intermod is an application that uses visual basic with an msexcel frontend. When calculating frequency configurations, use the default values as a starting point. Ias intermodulation analysis system rf coordination. For example, you could hear strong interference at 14. Intermodulation 1966 intermodulation is a 1966 jazz album by pianist bill evans and jazz guitarist jim hall.
Intermodulation analysis system ias renders reports out to a simple webpage that is compatible with all pcs and tablets. This download is usable only by those customers who have purchased and registered their intermod calculators. The actual developer of the software is professional wireless systems. The quality of the science behind a commercial product, as witnessed by the many rigorous journal publications, is unprecedented in the history of afm.
Sennheiser intermodulation and frequency management software click the download free trial button above and get a 14day, fullyfunctional trial of crossover. Intermodulation intermodulation products intermodulation software. With the ever growing amount of wireless gear used for live events. Sifm is the sennheiser software for rapid calculation of intermodulationfree radio frequencies for wireless microphone systems. Transmitter intermodulation a nonlinear mixing of external and internal signals inside a co site transmitter. Unlimited calculated intermodulation frequencies output with order of 2 and higher.
Fintermod calculates rf and optical intermodulation products. The clear waves software runs on any model rf explorer regardless. Two methods for increasing the spurious free dynamic range are evaluated. Radio mobile rf propagation simulation software on. About intermodulation the resource is currently listed in in a single category. The programs installer file is commonly found as intermodulation analysis. Online calculators this website offers a collection of online rf tools. Touchstone pro rf scanning software pc or mac vantage rf scanning software for mac os. Intermodulation in channelized digital esm receivers. It includes features you wont find in any other product including those that cost many times more.
The fcc mandates that antenna owners or licensees must ensure that the rf signal from their sites does not interfere with any existing signals from other carriers, public safety, etc. Intermodulation products module the intermodulation products module is used to compute intermodulation products as a function of frequencies and other transmitter and receiver specifications. Intermod assist is an intermodulation analysis and frequency coordination application. Enter your tours equipment list and recalculation for the next event is completed within minutes. Refer intermodulation distortion and imd products for more information. Trusted windows pc download intermodulation analysis system. Intermodulation calculator intermod study software.
By the way for evaluation purposes, feel free to download the clear waves. Software package for realtime and offline nanomechanical analysis. Rf intermodulation freeware downloads shareware central. Its computational engine rapidly generates frequency sets of intermodulation distortion free radio frequencies, applying userdefined signal bandwidths and channel spacing. This software calculates the frequencies based on avoiding intermodulation products. Intermodulation products result in interference, when two or more signals combine in a nonlinear device and produce an undesired signal on or near the tuned frequency of the victim receiver. Sifm sennheiser software sifm is the sennheiser software for rapid calculation of intermodulation free radio frequencies for wireless microphone systems. Tell a friend about us, add a link to this page, or visit the webmasters page for free fun content. On top of it all is the quick and personable support i have received from intermodulation products ab. Clearwaves rf scanning and coordination software pc touchstone rf scanning software. About fintermod intermodulation software the resource is currently listed in in a single category. Rf calculator conversion from and to various rf units intermodulation calculate intermodulation for 2 and 3 frequencys up to the 9th order. Realtime rf spectrum analysis combined with our intermodulation distortion imd.
Autonomously opening the file, though, can sometimes be a problem. Macros are also available to copy intermodulation frequencies for import into frequency coordination software. Introducing the latest, lowcost development in rf intermodulation analysis and frequency coordination intermod assist is a new, groundbreaking software tool specifically designed for the wireless, professional audio industries. Click here for additional information and photos on the intermod calculator. These offer the highest insensitivity to intermodulation.
Intermodulation distortion measurements on modern spectrum analyzers application note products. Rf frequency selectivity parameters at frequency deviations f 1 and f 2 from. They generate huge imposing looking lists of possible intermod products for a technician to investigate. The spurious free dynamic range sfdr associated with this distortion is discussed. A frequency spectrum plot showing intermodulation between two injected signals at 270 and 275 mhz the large spikes. Midians intermodcalculator predicts the possible occurrence of intermodulation products that may cause receiver interference. Up to transmit and receive frequencies can be entered with a frequency range from 0 hz to 999,999.
Intermodulation analysis system ias intermodulation analysis system ias by professional wireless systems is a musthave for every rf engineer. The intermod product calculator programs that one finds today generally just do bruteforce number crunching. Intermodulation is a source of interference that arises from the combination of two or more signals at different frequencies in some kind of nonlinear system. Passive intermodulation pim a nonlinear mixing in a passive device such as a loose connection, junction of dissimilar metals, etc. Intermodulation definition of intermodulation by the free. Fintermod intermodulation software resource detail. Midian electronics intermod calculator software downloads. It can be installed on any pc using windows 2000 sp4 or higher, windows xp sp3 or higher, windows vista and windows 7. Rfintermodpro, intermodulation software for pro audio. This link is listed in our web site directory since sunday jan 7 2007, and till today fintermod intermodulation software has been followed for a total of 2039 times. Unlimited calculated intermodulation frequencies output with order of 2. Ias saves precious setup time by combining a database of wireless performance equipment and access to local television frequencies in use. Par electronics sells intermod filters to combat pager interference.
Intermod professional broadcast engineering software. Microphone intermodulation distortion measurement listen, inc. This intermodulation calculator intermodulation study software is software based. Midians intermod calculator is pcbased intermodulation study and intermodulation calculator software that tests for the possible occurrence of intermodulation. It is a followup to their 1962 collaboration undercurrent. This intermodulation calculator intermodulation study software is softwarebased. Unlike traditional im distortion measurements performed on loudspeakers, this technique requires the test stimulus to be played through two separate source loudspeakers, one for the playback of the master fixed tone and one for the playback of the. Microphone intermodulation distortion measurement listen. A particular highlight is the achingly exquisite rendition of. Undercurrent 1962 intermodulation 1966 intermodulation is a 1966 jazz album by pianist bill evans and jazz guitarist jim hall. Interference and intermodulation studies are necessary to determine the potential of any new or modified signals interfering with existing signals, so owners can plan and. Clear waves for macos rf spectrum analyzer and frequency. The intermodulation between frequency components will form additional components at frequencies that are not just at harmonic frequencies integer multiples of either, like harmonic distortion, but. Ias intermodulation analysis system rf coordination software pc intermod assist rf coordination software pc lectrosonics wireless designer.
Mystic somewhat a contraction of microwave system calculator is an easytouse program which provides you with a smart way to build your rfelectronic design faster and easier. Sifm is the sennheiser software for rapid calculation of intermodulationfree radio frequencies for wireless. Filename, size file type python version upload date hashes. Rf intermodulation calculator,formula for rf intermodulation. After executing the study, the intermod report generator filters and sorts results in order to isolate intermod problems that are likely to occur. Oct 02, 2014 intermodulation software for pro audio. Intermodulation im or intermodulation distortion imd is the amplitude modulation of signals containing two or more different frequencies, caused by nonlinearities or time variance in a system. Sifm is the sennheiser software for rapid calculation of intermodulation free radio frequencies for wireless microphone systems. In order to do so, shortly explain the scope or problem discussed throughout the text, aswell as its academic relevance in the field, your approaches, methods and the final aim of your outcomes. Software tool identifies rf spectrum intermodulation. Sennheiser intermodulation and frequency management instructions for the rapid calculation of intermodulation free radio frequencies for wireless microphone systems, sifm. The intermodulation products are sum and difference as well as other integer and non integer multiple of these frequencies.
Greg haugstad, facility director, university of minnesota. Due to the collocation of multiple transmitters at the same radio site, intermodulation is a common problem, but is easily prevented with careful design. The quarterwave impedance transformation calculator is used to match an input and an output impedance at a given frequency for maximum power transfer. Sennheiser intermodulation and frequency management no liability this version is intended for professional users able to interpret the input. Intermod includes tools to help the audio engineer drill down the massive amount of data, to a smaller set of most. Professional wireless systems upgrades its intermodulation.
The main category is radio tools and utilities that is about radio tools and utilities for amateur radio operators. Sennheiser intermodulation and frequency management software. Following equation or formula is used for rf intermodulation imd calculator. If the input of a linear timeinvariant system is a signal of a single frequency, then the output is a signal of the same frequency.
The beginning of your term paper should allow readers to reconstruct your golden threat. Twotone testing for imd has been used to characterize the non. For the power station uhf band of frequencies, the third order intermodulation free channels would be channels 21a, 22, 23a, 26 and 27. Intermodulation calculator intermodulation study software. Upgrade your existing intermod calculator by selecting a software version from the list below. Intermodulation distortion occurs at frequencies that are the sum andor difference of integer multiples of the fundamental frequencies. Intermodulation study software intermodulation calculator. First, by adding a small amount of gaussian noise to the input of the receiver, the intermodulation distortion is found to be reduced significantly.
Clearly, the 3rd order intermodulation tones have the same spacing to the upper and lower tone as the two original tones have. Professional wireless systems is a leader in the wireless audio industry. S i f m sennheiser intermodulation and frequency management. This link is listed in our web site directory since friday jul 18 2008, and till today intermodulation has been followed for a total of 486 times. Intermod assist intermodulation calculator and frequency coordination software is a unique tool it will change the way you approach the problem of intermodulation interference and the challenges of frequency coordination and channel assignment. Upgrades its intermodulation analysis software ias at infocomm 2015. It is a followup to their 1962 collaboration undercurrent reception. The combination process can occur in the final stage of a transmitter or in the rf of first mixer circuitry of a receiver. Though this much is helpful, the technician gets little other assistance from the program.
This software tool specifically designed for the wireless, professional audio and video industries. Its computational engine rapidly generates frequency sets of intermodulation distortion free radio frequencies, applying userdefined signal bandwidths and channel. If intermodulation products fall within the bandwidth of a receiver, intermodulation interference may occur. The main category is reducing radio frequency interference that is about about radio frequency interference. The purpose of this sequence is to measure the intermodulation distortion im of a microphone. Radio mobile rf propagation simulation software online. Interference due to intermodulation generally occurs when at least two transmitters close to the receiving antenna produce very strong signals in the receiver.