R&S ESMD Wideband Monitoring Receiver The radiomonitoring specialist: versatile, fast and accurate

Transcription

1 Radiomonitoring & Radiolocation Product Brochure R&S ESMD Wideband Monitoring Receiver The radiomonitoring specialist: versatile, fast and accurate

2 R&S ESMD Wideband Monitoring Receiver At a glance The R&S ESMD wideband monitoring receiver can handle all the tasks involved in the areas of signal searching, radiomonitoring, radio detection/reconnaissance and spectrum monitoring in line with ITU recommendations. The receiver is equally well suited for mobile and stationary applications. Its operation and functionality are optimized for monitoring tasks. Additional functions allow use in other areas, especially when realtime analysis of signals is required. The R&S ESMD stands out from the crowd due to its wide frequency range, outstanding receive characteristics, 20 MHz realtime bandwidth (optional 80 MHz) and wealth of functionalities. An upgrade kit is available to turn the R&S ESMD into a direction finder with a scope of functions so far unrivaled in this equipment class. All signal processing is performed by means of powerful processors and field programmable gate arrays (FPGAs). Free slots for additional hardware modules make it possible to expand the instrument to meet future tasks. All receiver functions can be remote-controlled via the LAN interface. All measurement results, spectrum and I/Q data, the demodulated signal, etc. are output in digital format via this interface. Key facts Frequency range from 9 khz to 26.5 GHz (basic version: 20 MHz to 3.6 GHz) Extensive preselection for optimum reception even in scenarios with dense signal occupancy 20 MHz realtime bandwidth (optional 80 MHz) Four additional digital down converters (DDCs) within the realtime bandwidth RF spectrum with scan rates of up to 100 GHz/s (300 GHz/s with 80 MHz option) IF spectrum of up to 20 MHz (optional 80 MHz) Polychrome IF spectrum for reliable detection of pulsed signals Video spectrum for displaying the demodulated signal Waterfall display for all spectra Two separate signal processing paths for demodulation/ measurements and IF panorama Wideband demodulation for accurate level measurements even for very short pulses Can be expanded into a direction finder 2

3 R&S ESMD Wideband Monitoring Receiver Benefits and key features Wide range of functions for many application areas Panorama scan for fast spectrum monitoring with small resolution bandwidths Reliable detection and analysis of wideband signals Detection and analysis of all types of interfering signals Demodulation of signals with bandwidths of up to 20 MHz Signal analysis with classification, demodulation and decoding of digital transmission techniques (optional) Precise direction finding of emissions (with R&S ESMD-DF direction finder upgrade kit) Internal and external storage and replay of data page 4 Comprehensive spectrum analysis with IF panorama and video panorama IF panorama with a span from 1 khz to 20 MHz (optional 80 MHz) Polychrome display for detection and analysis of shortduration signals Video panorama page 5 Comprehensive scanning capabilities Fast scanning of a user-definable frequency range (panorama scan) Scanning of a frequency range with a fixed channel spacing (frequency scan) Scanning of stored frequencies (memory scan) page 6 Performance and measurement techniques in line with ITU recommendations Meets or exceeds ITU recommendations for monitoring receivers as well as direction finders Comprehensive measurements in line with ITU recommendations page 7 Excellent receive characteristics Highest linearity even for dense signal occupancy Extensive preselection Separate receive paths for HF, VHF/UHF and SHF page 7 Perfect signal analysis in realtime 20 MHz realtime bandwidth, optional 80 MHz 34 IF filters from 100 Hz to 20 MHz for demodulation and measurements FFT spectrum calculation Spectrum and waterfall display Demodulation of analog modulated signals Separate paths for IF panorama and demodulation/measurement Digital down converters True realtime processing page 8 Precise direction finding of emissions (with R&S ESMD-DF direction finder upgrade kit) Wideband direction finding with realtime bandwidth of up to 20 MHz Fast, reliable direction finding due to high DF accuracy Direction finding up to 6 GHz page 10 Clear operating concept Two versions for remote operation or direct front-panel operation Direct access to important functions via fixed (labeled) keys 8.4" XGA display ( pixels) page 11 Standard interfaces for simple system integration Internal and external data storage, also usable for replay Two Gbit Ethernet interfaces (10/100/1000BaseT) Digital and analog data output Multiple antenna inputs page 12 Solid investment protection, low operating costs Expandable platform Built-in test equipment Short downtime during service and repair Worldwide service page 13 Rohde & Schwarz R&S ESMD Wideband Monitoring Receiver 3

4 Wide range of functions for many application areas Even in its basic configuration, the R&S ESMD offers more than a normal receiver. This is due to its wide range of functions. The available options can turn the R&S ESMD into an integrated and very compact all-in-one solution for radio detection, radiomonitoring and radiolocation that is capable of handling practically any imaginable task. Panorama scan for fast spectrum monitoring with small resolution bandwidths The panorama scan function of the R&S ESMD allows extremely fast spectrum monitoring with scan speeds of up to 100 GHz/s even with small resolution bandwidths. An optional expansion is available to increase the realtime bandwidth to 80 MHz, boosting the scan speed to 300 GHz/s. As a result, the probability of intercept is extremely high even for very short signals. Reliable detection and analysis of wideband signals The wide realtime bandwidth of 20 MHz (optional 80 MHz) enables reliable detection and analysis of wideband signals. Even in the fixed frequency mode (FFM), this helps ensure a higher likelihood of detecting low probability of intercept (LPI) signals such as bursts, radar pulses and frequency-agile signals (frequency hoppers). Detection and analysis of all types of interfering signals The R&S ESMD can quickly locate all types of interfering signals. If the frequency range is not precisely known, the fast panorama scan can be used to find the interfering signal. The signal is then subjected to more detailed analysis in the fixed frequency mode (FFM). The multifunctional IF panorama and its versatile setting options allows users to perform a powerful and more in-depth analysis. Demodulation of signals with bandwidths of up to 20 MHz Due to the wide demodulation bandwidth (20 MHz) the R&S ESMD can even demodulate wideband signals, e.g. all emissions in the ATC band simultaneously or analog TV transmitters. The TV picture (in bitmap format) and the audio can be used for positive identification of the transmitter. The data that is gathered is available on different interfaces in digital format and to some extent in analog format. Signal analysis with classification, demodulation and decoding of digital transmission techniques (optional) The R&S ESMD can internally demodulate analog modulated signals. For use in analyzing digitally modulated signals, Rohde & Schwarz developed the R&S GX430 analysis software. After it is installed on a PC, this software processes the digital I/Q data arriving from the receiver via LAN. The result is a compact and very powerful system for signal analysis applications. Precise direction finding of emissions (with R&S ESMD-DF direction finder upgrade kit) When equipped with the R&S ESMD-DF direction finder upgrade kit, the R&S ESMD becomes a direction finder for the frequency range from 20 MHz to 3 GHz (optional 300 khz to 6 GHz). The bearings are calculated using a fast Fourier transform (FFT) within the set panorama bandwidth. Internal and external storage and replay of data The R&S ESMD enables the user to record and replay digital I/Q data as well as RF and IF spectra internally and externally. 4

5 Comprehensive spectrum analysis with IF panorama and video panorama IF panorama with a span from 1 khz to 20 MHz (optional 80 MHz) The receiver is equipped with an IF panorama (FFT panorama) to enable more in-depth analysis of the signal spectrum and signal environment. The current receive frequency is at the center of the spectrum display. The span can be set between 1 khz and 20 MHz (optional 80 MHz), allowing optimal adaptation to the current task at hand. The MINHOLD, MAXHOLD and AVERAGE modes are also possible, allowing an even broader scope of applications. Two operating modes are available for spectrum display: In AUTO mode, the FFT length is constant. In manual mode, it is variable. Here, the frequency resolution of the spectrum display can be selected from among 35 different values. The benefit is that the frequency resolution can be adapted exactly to the channel spacing used by a radio service under investigation. As a result, each point in the spectrum is always tuned to the center of the respective channel. The edge steepness of the resolution filter in the spectrum can be set to AUTO, NORMAL, NARROW or SHARP, which significantly improves the separation of adjacent channels. Polychrome display for detection and analysis of short-duration signals In histogram mode, the IF spectrum is displayed using multiple colors (polychrome IF spectrum). The duration of a signal in the spectrum is color-coded. Signals with a very short duration are displayed in blue while continuous signals appear in red. Overlapping short-duration and continuous signals in the spectrum can thus still be distinguished and displayed when this is no longer possible with conventional display modes such as MAXHOLD and AVERAGE. Another display mode provided with the polychrome IF spectrum makes it possible to measure pulse lengths. Video panorama Using the video panorama, the spectrum of the demodulated signal is displayed. This can be used, for example, to display subcarriers in FM signals (pilot tone, RDS carriers). The AM 2, FM 2 and I/Q 2 modes enable the user to measure signal parameters such as the baud rate and chip rate (for DSSS signals) that are relevant in digital methods. Polychrome IF spectrum: Even signals with a low frequency of appearance are visible. Rohde & Schwarz R&S ESMD Wideband Monitoring Receiver 5

6 Comprehensive scanning capabilities Fast scanning of a user-definable frequency range (panorama scan) The panorama scan (PSCAN) enables the R&S ESMD to perform a high-speed scan of a user-definable frequency range. It thus provides a fast overview of spectrum occupancy. Any changes caused by illegal radio services, interferences, temporary emissions, etc. can be immediately detected. A marker is used to quickly tune the receiver to a signal of interest for demodulation and analysis purposes. One special feature of the panorama scan is its ability to deliver fast scan speeds with small resolution bandwidths and thus outstanding sensitivity. The R&S ESMD can attain scan speeds of up to 100 GHz/s (up to 300 GHz/s with the 80 MHz option) with a 100 khz resolution bandwidth. A total of 24 different resolution bandwidths are available. Scanning of a frequency range with a fixed channel spacing (frequency scan) Using the frequency scan (FSCAN) function, a user-definable frequency range can be scanned in equidistant steps. The step size can be set as required. The receiver checks each channel to see whether it is occupied. FSCAN is designed especially for monitoring radio services that use a fixed channel (frequency) spacing. Scanning of stored frequencies (memory scan) The R&S ESMD has memory locations (channels). A complete data set can be assigned to each memory location. Each data set can include the frequency as well as settings for the bandwidth, demodulation mode, detector type, etc. In the memory scan (MSCAN), the selected channels are scanned in sequence and checked for occupancy. This type of scan is particularly useful for scanning individual frequencies that do not have a fixed channel spacing or for periodically scanning frequency blocks. The suppress function enables the user to suppress frequencies in the FSCAN mode and also in MSCAN mode. If the differential mode is activated during a panorama scan, the current spectrum is saved as a reference and any deviations from the reference spectrum are displayed. New or changed signals become clearly visible, and display of permanent emissions is suppressed. The RF spectrum panorama scan provides a fast overview of the frequency range of interest along with important insights into the different signals that are present. 6

7 Performance and measurement techniques in line with ITU recommendations The R&S ESMD meets the ITU recommendations for monitoring receivers and direction finders. In many areas, the recommended values are even clearly exceeded. For example, the R&S ESMD provides significantly higher large-signal immunity (higher intercept points, lower phase noise) than the minimum values recommended by the ITU. Excellent receive characteristics Highest linearity even for dense signal occupancy The R&S ESMD is designed for use in scenarios that place very high demands on any receiver's characteristics. For example, the R&S ESMD is capable of processing a large number of strong signals in its receive bandwidth (e.g. at airports) without generating unwanted signals (e.g. intermodulation products and harmonics). Comprehensive measurements in line with ITU recommendations Using the R&S ESMD-IM option, the receiver can be equipped with an extensive range of ITU-compliant measurement techniques. These include: Frequency and frequency offset in line with ITU- R SM.377 1) Modulation in line with ITU-R SM.328 Spectrum occupancy in line with ITU-R SM.182/SM.328 (using external PC software such as R&S ARGUS-IT) Bandwidth in line with ITU-R SM.443 Analysis of digital standards in line with ITU-R SM.1600 (using the R&S GX430 analysis software) Field strength measurements in line with ITU-R SM.378 are already enabled in the base unit. All measurements are performed automatically and simultaneously. This saves valuable measurement time and enables very efficient deployment of personnel and test equipment. Using the built-in decoder for the radio data service (RDS), the RDS signal is demodulated and decoded and its contents are displayed. Messages such as the station name, station code and text transmissions are visible at a glance. Extensive preselection The extensive preselection capabilities also minimize the signal sum load at the receiver input. In other words, the only signals that pass the preselection are those within the currently active filter passband. Signals at frequencies outside this passband are suppressed. The preselection is implemented up to 1500 MHz using tracking bandpass filters, while suboctave filters are used up to 3.6 GHz. In the SHF range up to 26.5 GHz, a tracking filter is also activated, while combined highpass and lowpass filters are available in the range from 9 khz to 32 MHz. Separate receive paths for HF, VHF/UHF and SHF In the basic version, the R&S ESMD covers the frequency range from 20 MHz to 3.6 GHz. Additional tuners can be used to extend the frequency range downwards (9 khz to 32 MHz) and upwards (3.6 GHz to 26.5 GHz). The division into individual tuners makes it possible to optimize their respective receive characteristics. This is a major benefit that distinguishes the R&S ESMD from multiband tuners as those used in spectrum analyzers, for example. This makes the receiver particularly well suited to receiving signals from the antenna despite the presence of interfering signals with a high field strength. Rohde & Schwarz R&S ESMD Wideband Monitoring Receiver 7

8 Perfect signal analysis in realtime 20 MHz realtime bandwidth, optional 80 MHz The R&S ESMD has a realtime bandwidth of 20 MHz (optional 80 MHz). This enables the user to analyze broadband signals and the signal environment of up to 20 MHz (80 MHz). In addition, the I/Q baseband data is available on the corresponding interfaces. 34 IF filters from 100 Hz to 20 MHz for demodulation and measurements To process the different signals with an optimum signal-tonoise ratio, the receiver is equipped with 34 IF filters providing bandwidths from 100 Hz to 20 MHz. Demodulation with output of the digital baseband and video data can be performed at all bandwidths (max. 9 khz for SSB and CW). FFT spectrum calculation All spectra are calculated as FFT in realtime in the R&S ESMD. The result is an extremely fine resolution and high sensitivity along with a simultaneously high scan rate (panorama scan) or minimal calculation time (IF panorama). Since the two panorama functions are calculated independently (using their own individual settings), a mere keystroke (or command) is all it takes to switch from a panorama spectrum to an IF panorama or vice versa. This is essential for monitoring requirements which cannot be met by T&M instruments (e.g. spectrum analyzers). In addition, a gap-free and dynamically variably overlapping FFT is implemented in the IF panorama. This means that no signal is ever lost and the receiver is never blind. This is very beneficial since even extremely narrow pulses can be detected with 100 % probability of intercept. Spectrum and waterfall display Also a waterfall display is available for all spectra. This is especially important when it is necessary to detect signals in push-to-talk (PTT) radio traffics. While the signals disappear quickly from the IF panorama, they are still visible as a line in the waterfall. Results of the modulation and bandwidth measurements are available at a glance. 8

9 Demodulation of analog modulated signals Analog modulated signals are demodulated in the receiver. Due to the wide demodulation bandwidth, even extremely wideband signals can be processed such as analog TV signals or all carriers in the ATC band simultaneously. The demodulated signal (audio, video) is available in analog and digital formats (via the LAN interface). Separate paths for IF panorama and demodulation/measurement The R&S ESMD has two independent paths for signal processing. The span of the IF panorama and the parameters for the measurement path (IF filters, demodulation mode, level measurement/evaluation, etc.) can thus be set independently of one another. As a result, the user has access to a wide IF display and can, at the same time, benefit from an optimum demodulation bandwidth. Unlike most comparable instruments (e.g. spectrum analyzers), the R&S ESMD does not perform level measurements in the IF spectrum. Instead, these measurements are performed in the demodulation/measurement path, ensuring a precise measurement of the signal level even for very short pulses. Digital down converters When equipped with the R&S ESMD-DDC option, the receiver has four additional digital down converters in addition to the wideband demodulation path. These converters function entirely in parallel within the realtime bandwidth and can be parameterized independently of one another. Each of these digital down converters offers the AM, FM, PULSE, I/Q, LSB, USB and CW demodulation modes as well as a comprehensive set of 25 IF bandwidths from 100 Hz to 1 MHz (100 Hz to 9 khz for LSB, USB, CW), automatic gain control (AGC) and a squelch function. Moreover, each DDC provides the complex baseband (I/Q), the associated signal level and an audio signal. True realtime processing The R&S ESMD makes use of a special realtime operating system which runs on a processor designed to support realtime operations. Windows systems are not used in the R&S ESMD because they have no realtime capabilities. The Windows XP operating system (model.03) installed on the front-panel computer is used exclusively to make parameter settings, manage interfaces and display results. Special realtime features include gap-free signal processing and data output in realtime. The four DDCs are user-definable within the IF bandwidth. Rohde & Schwarz R&S ESMD Wideband Monitoring Receiver 9

10 Precise direction finding of emissions (with R&S ESMD-DF direction finder upgrade kit) Wideband direction finding with a realtime bandwidth of up to 20 MHz If the R&S ESMD is upgraded into a direction finder, it can take the bearings of all signals in a wide frequency range of up to 20 MHz. This is due to fast signal processing. The bearing is calculated and displayed simultaneously for each signal. Wideband direction finding offers a variety of applications and benefits: All frequency channels in the aeronautical or maritime frequency bands can be displayed and their bearings taken simultaneously All FM broadcast channels can be displayed and their bearings taken simultaneously The bearings of signals with wide bandwidths such as DAB and DVB-T can be taken with high channel resolution. The bearing is then an average value (histogram) calculated from many individual bearings. This compensates for frequency-dependent bearing fluctuations The bearings of frequency-agile transmitters (frequencyhopping and chirp transmitters) with up to 100 hops/s are reliably determined Fast, reliable direction finding due to high DF accuracy In the VHF/UHF range the R&S ESMD with its direction finding function uses the correlative interferometer DF method. In contrast to simple amplitude comparison methods, the instrument therefore offers significantly higher, class A/B DF accuracy in line with ITU SMH This high DF accuracy relies on the precise measurement of the phase angles between the reference antenna element and the other elements. Measuring the phase difference between two signals normally requires two coherent receive paths. For this reason, most interferometer direction finders on the market use at least two receivers. In the R&S ESMD, the two receive paths are coherently linked in the DF antenna using a patented method. As a result, there is no need for a second interception processing channel that is customarily found in interferometer direction finders. In the HF range, the Watson-Watt direction finding method is used. The special advantage of this method is that small DF antennas can be deployed. Accordingly, the R&S ESMD with its DF function is also very suitable for mobile direction finding in this frequency range. Direction finding up to 6 GHz Together with the R&S ESMD-SHF option and the R&S ADD075 UHF/SHF DF antenna, the R&S ESMD delivers precise DF results up to 6 GHz. Until now, this was possible only up to 3 GHz. For the first time ever, a compact instrument thus takes highly accurate bearings of signals above 3 GHz such as: WLAN WiMAX Microwave links The DF function of the R&S ESMD fully corresponds to that of the R&S DDF255 digital direction finder (product brochure: PD , data sheet: PD ). Display of DF results. 10

11 Clear operating concept Two versions for remote operation or direct frontpanel operation The operating concept of the R&S ESMD meets the requirements placed on a state-of-the-art radiomonitoring receiver. The receiver is available in two different models: Model.02: Base unit, front panel without display and control elements; solely for remote-control operation Model.03: With display and control elements; for manual operation via the front panel and remote-control operation Direct access to important functions via fixed (labeled) keys In model.03 (with front panel control), the essential functions such as selection of bandwidth, demodulation modes and detectors can be accessed directly using keys. Menus structured by priority provide quick access to further functions and settings, making it possible to quickly adapt operation to the task at hand. 8.4" XGA display ( pixels) Measurement results as well as spectrum and waterfall displays are output on a straightforward 8.4" XGA color display (model.03). This display can be configured as desired. All receiver functions can be remote-controlled via the LAN interface. Suitable operating software for installation on a PC is part of the equipment supplied. The R&S ESMD with front panel and without display and control elements, solely for remote-control operation (model.02). Rohde & Schwarz R&S ESMD Wideband Monitoring Receiver 11

12 Standard interfaces for simple system integration Internal and external data storage, also usable for replay The receiver provides a 2 Gbyte internal memory for recording/storing data. Its contents can also be replayed internally. Moreover, digital data can be output in realtime via the LAN interface and recorded externally. As a result, the recording time is limited only by the capacity of the external storage medium. Two Gbit Ethernet interfaces (10/100/1000BaseT) To allow remote control and ensure reliable transmission at high speeds (baseband data, scan data), the R&S ESMD is equipped with two Gbit Ethernet interfaces (10/100/1000BaseT). The downward-compatible control protocol used on the LAN interfaces is compliant with the standard commands for programmable instruments (SCPI) syntax. Digital and analog data output The data is available on different interfaces in digital format and to some extent also in analog format. Consequently, the user has additional post processing and further processing alternatives. The R&S ESMD is thus also a suitable element for comprehensive monitoring systems. Digital via LAN: Complex baseband data (I/Q data) up to 15 MHz bandwidth Video data (demodulated signal) up to 15 MHz bandwidth Audio up to 12.5 khz bandwidth Spectrum data of panorama scan, IF panorama and video panorama Measurement results Analog via fixed interfaces: Video outputs for AM/FM or analog I and Q Audio up to 12.5 khz bandwidth IF analog Multiple antenna inputs The R&S ESMD has five antenna inputs for HF, VHF/UHF and SHF. The inputs can be switched manually by the user or automatically by the receiver itself. 12

13 Solid investment protection, low operating costs Expandable platform The receiver is also prepared to meet future requirements in the fields of receiver and signal analysis engineering. Free slots for hardware expansions and spare capability for signal processing allow the receiver to be optimally adapted to new tasks. Integration into new or existing systems is simple since the protocol used on the remote control interface is compatible with other receivers from Rohde & Schwarz. Built-in test equipment A number of test points in the receiver are continuously monitored by the built-in test equipment. Additionally, it is possible to perform a dynamic test of the entire interception processing channel. Deviations from the nominal values appear as an error message on the user interface. A defective module is thus reliably identified. Short downtime during service and repair Since extensive recalibrations after a module replacement are eliminated, the downtime is reduced to a minimum. 112 test points are used to continuously monitor the modules in the receiver. Any deviations from the nominal values are reported immediately. Worldwide service Rohde & Schwarz has a global presence and a dedicated service network in over 70 countries. This means that an instrument can be maintained or repaired on site or in the country itself. As a result, transportation, as well as costs and downtimes are minimized. Rohde & Schwarz R&S ESMD Wideband Monitoring Receiver 13

14 Application examples Designed for use in extensive monitoring systems (stationary and mobile) Even in its basic version, the R&S ESMD meets all the requirements placed on receivers in extensive (e.g. nationwide) monitoring systems. Moreover, it is possible to expand the receiver to handle different tasks. One particularly attractive option is to turn the receiver into a direction finder, producing a highly compact and extremely powerful instrument for radiomonitoring and direction finding. For mobile applications in vehicles, the optional DC power supply is very useful since it allows the R&S ESMD to be connected directly to the vehicle's supply system. For ITU monitoring systems, the external R&S ARGUS PC software is recommended (data sheet: PD ) while the external R&S RAMON PC software is available for authorities accomplishing governmental tasks (product brochure: PD ). Finding and analyzing interfering signals Due to the increase in transmitter density and the problem of industrial interference (man-made noise), detecting and analyzing radio interference is becoming very important. Such tasks therefore require receiver characteristics and functions to ensure that the interference source can be located very quickly, a crucial aspect in security-critical radio traffics (e.g. aeronautical radio). Its compact design and wide range of special functions make the R&S ESMD an ideal choice for detecting all types of radio interference. To master these tasks, the receiver includes special functions such as selectable measurement time and continuous (averaged) or periodic (maximum value upon expiration of measurement time) level output. Since these functions are also effective in the RF spectrum (panorama scan), even nonperiodic or frequency-agile interferers can be easily detected. Such interferers are otherwise very difficult to detect due to their irregular appearance in a quickly changing spectrum. The FFM mode using the IF panorama performs in-depth analysis of the interfering signal or of the impaired service. The color-coded presentation provided by the polychrome spectrum is very useful since it helps to bring out pulsed interfering signals. Continuous signals that are producing interference which might be hidden behind pulsed wanted signals such as GSM can also be reliably detected in this color-coded spectrum. Impaired ATC band: The interfering signals are not visible in the normal IF spectrum. Impaired ATC band: The interfering signal is clearly visible in the polychrome IF spectrum (in this case a wideband interfering signal). Due to the settable switch-off delay, the high activity in the spectrum is also easier to recognize. 14

15 Detection of frequency-agile signals (hoppers) The wide realtime bandwidth and high scan rates of the receiver ensure reliable detection even of signals with quickly varying frequencies. Even the most advanced hoppers with extremely high hop rates are detected. If the receiver is in panorama scan mode, the MAXHOLD function can be used to quickly display the occupied frequency range of the transmitter. If the hopper moves about within the realtime bandwidth of the receiver, all hops will be contained in realtime in the digital baseband data that is output on the LAN interface. This data can be processed externally almost in realtime or recorded for subsequent offline analysis, e.g. using the external R&S AMLAB PC software. Detection of burst signals, radar emissions Due to the receiver's wide realtime bandwidth of 20 MHz (optional 80 MHz) and functions such as overlapping FFT and polychrome IF display, even very narrow burst such as those emitted by radar equipment can be detected and analyzed. The benefits of overlapping FFT become clearly apparent with this kind of pulses. Unlike conventional FFT which is not capable of reliably detecting short signals between the individual frames, overlapping FFT ensures that nothing is lost. This type of FFT calculation is practically the only way to ensure 100 % reliable detection. To display the detected signal, the IF spectrum can be switched to MAXHOLD mode. However, if continuous signals are also present in the spectrum in addition to the short-duration signal, the MAXHOLD display will fail. It is then no longer possible to distinguish the signal behavior since all signals are represented with their maximum value. In this case, the polychrome IF spectrum is useful since only this function allows the user to make a clear distinction between short-term and continuous signals. The color-coded presentation makes it possible to find the short-duration signal of interest quickly and reliably. Parameters such as the pulse duration can be measured using the PULSE measurement mode provided in the IF panorama. To perform accurate level measurements for short pulses, a wide demodulation/measurement bandwidth is required. Here again, the R&S ESMD is very well equipped with bandwidths of up to 20 MHz. Pulse detection and measurement using the polychrome spectrum. Rohde & Schwarz R&S ESMD Wideband Monitoring Receiver 15

16 Analysis of digital signals with external software The R&S GX430 analysis software is available for analyzing complex signals (data sheet: PD ). This software has a number of functions for signal detection and analysis such as classification (detection of the modulation mode), vector analysis, bit stream analysis and decoding. Using the Automatic Search and Classify function, any desired frequency range can be scanned and the signals detected in this range will be automatically classified. For online analysis, digital data is transferred in realtime via LAN from the receiver to the PC. For offline analysis, the software accesses data that was recorded internally in the receiver or externally. Using the R&S GX430-IS option (data sheet: PD ), users can perform measurements for digital standards (DAB, DVB) in line with ITU recommendation ITU-R SM The R&S ESMD in combination with R&S GX430 offers an outstanding price/performance ratio. Used by organizations with governmental tasks The R&S ESMD provides outstanding features to meet the needs of these organizations. Possible applications include scanning, demodulation, analysis and interception of signal content. There is hardly any task this receiver cannot handle. The extraordinarily fast search function and comprehensive signal analysis capabilities allow reliable detection of unknown signals in a minimum of time. Supporting information to ward off potential dangers are also delivered quickly and efficiently. Recurring events can be immediately identified after they are saved in special databases. For comprehensive monitoring tasks of this kind, Rohde & Schwarz offers the external R&S RAMON PC software. Selective call analysis The R&S ESMD-SL option is available for decoding selective call methods. The following selective call methods are supported: CCIR1, CCIR7, CCITT, EEA, EIA, EURO, DCS, DTMF, CTCSS, NATEL, VDEW, ZVEI1 and ZVEI2. R&S ESMD and R&S GX430: signal detection and analysis at its finest. 16

17 Options summary Option R&S ESMD-HF R&S ESMD-SHF R&S ESMD-PS R&S ESMD-IM R&S ESMD-DF R&S ESMD-SL R&S ESMD-ADC R&S ESMD-WB R&S ESMD-DDC R&S ESMD-COR R&S ESMD-DC Description Frequency range extension downwards: 9 khz to 32 MHz (DF operation starting at 100 khz) Frequency range extension upwards: 3.6 GHz to 26.5 GHz (DF operation up to 6 GHz) This option enables the R&S ESMD to scan a user-definable frequency range at maximum speed. This provides the user with a fast overview of activity within the spectrum. Any changes caused by illegal radio services, interferences, temporary emissions, etc. can be immediately detected. The marker function is used to immediately demodulate and analyze the signal of interest. Extensive range of ITU-compliant measurement techniques. These include: Frequency and frequency offset in line with ITU-R SM.377 Modulation in line with ITU-R SM.328 Spectrum occupancy in line with ITU-R SM.182/SM.328 (on external PC software) Bandwidth in line with ITU-R SM.443 Field strength measurements in line with ITU-R SM.378 are already enabled in the base unit. When equipped with the direction finder upgrade kit, the R&S ESMD can take the bearings of all signals in a wide frequency range of up to 20 MHz with a selectable resolution. The DF function of the R&S ESMD fully corresponds to that of the R&S DDF255 digital direction finder (product brochure: PD , data sheet: PD ). Decoding of diverse selective call methods and the demodulation of pagers. The following selective call methods are supported: CCIR1, CCIR7, CCITT, EEA, EIA, EURO, DCS, DTMF, CTCSS, NATEL, VDEW, ZVEI1, ZVEI2. When equipped with the ADC board, the R&S ESMD can handle special functions such as the 80 MHz FFT bandwidth and multichannel reception (DDCs). This option consists of a plug-in board and a connecting cable. Extending the FFT bandwidth to 80 MHz allows a detection of all signals within this bandwidth in realtime. This option is particularly suitable for frequency-agile signals (e.g. hoppers) and for analysis of extremely short pulses (e.g. radar). The R&S ESMD-ADC ADC board is required for operation. This option provides (in addition to the 20 MHz wideband demodulation path) four additional demodulation channels within the FFT bandwidth (20 MHz or 80 MHz) for demodulation (AM, FM, PULSE, SSB, I/Q) and level measurement with bandwidths of up to 1 MHz (9 khz for SSB and CW). The R&S ESMD-ADC ADC board is required for operation. During DF operation, this option enables the R&S ESMD to perform bearing error correction using comparison tables. This is recommended for generating correction data when taking bearings during mobile operation in vehicles. The R&S ESMD is designed as standard for operation from AC supply. When equipped with the R&S ESMD-DC option, the receiver can also be operated from DC voltage (12 V to 32 V), e.g. in vehicles. Rohde & Schwarz R&S ESMD Wideband Monitoring Receiver 17

18 Specifications in brief Specifications in brief Frequency range base unit 20 MHz to 3.6 GHz with R&S ESMD-HF option with R&S ESMD-SHF option with R&S ESMD-HF and R&S ESMD-SHF options 9 khz to 3.6 GHz 20 MHz to 26.5 GHz 9 khz to 26.5 GHz FFT bandwidth (realtime bandwidth) base unit max. 20 MHz with R&S ESMD-WB option max. 80 MHz Linearity (third-order intercept) 9 khz to 32 MHz (low distortion mode) typ. 35 dbm 20 MHz to 3.6 GHz (low distortion mode) typ. 25 dbm 3.6 GHz to 26.5 GHz (low distortion mode) typ. 17 dbm Noise figure 9 khz to 32 MHz (normal mode) typ. 12 db (> 400 khz) 20 MHz to 3.6 GHz (low noise mode) typ. 9 db 3.6 GHz to 26.5 GHz (low noise mode) typ. 16 db Demodulation bandwidth 34 filters, 100 Hz to 20 MHz Demodulation modes AM, FM, PM, PULSE, CW, LSB, USB, ISB, I/Q Scan speed with R&S ESMD-PS option up to 100 GHz/s ITU measurements with R&S ESMD-IM option AM index, FM/PM deviation, bandwidth, field strength, frequency/offset Multichannel operation with R&S ESMD-DDC option four additional demodulation channels within 20 MHz/80 MHz DF mode with R&S ESMD-DF direction finder upgrade kit 300 khz to 6 GHz (depending on option) For data sheet, see PD and 18

19 Ordering information Designation Type Order No. Wideband Monitoring Receiver, without front panel control R&S ESMD Wideband Monitoring Receiver, with front panel control R&S ESMD Options HF Module, 9 khz to 32 MHz R&S ESMD-HF SHF Module, 3.6 GHz to 26.5 GHz 2) R&S ESMD-SHF Panorama Scan (RF spectrum) R&S ESMD-PS ITU Measurement Software R&S ESMD-IM Selective Call/Analysis R&S ESMD-SL ADC Board R&S ESMD-ADC Wideband 80 MHz 3) R&S ESMD-WB Digital Down Converter 3) R&S ESMD-DDC Direction Finder Upgrade Kit R&S ESMD-DF DF Error Correction R&S ESMD-COR DC Power Supply R&S ESMD-DC Your local Rohde & Schwarz sales associate will help you determine the optimum configuration for your requirements. To find your nearest Rohde & Schwarz representative, visit WiMAX Forum is a registered trademark of the WiMAX Forum. WiMAX, the WiMAX Forum logo, WiMAX Forum Certified and the WiMAX Forum Certified logo are trademarks of the WiMAX Forum. 1) Depending on the particular application, an external reference frequency with higher accuracy might be necessary, e.g. a GPS reference. 2) Upgrade must be performed in factory. 3) For both options, only one R&S ESMD-ADC ADC board is required. Rohde & Schwarz R&S ESMD Wideband Monitoring Receiver 19

20 Service you can rely on J Worldwide J Local and personalized J Customized and flexible J Uncompromising quality J Long-term dependability About Rohde & Schwarz Rohde & Schwarz is an independent group of companies specializing in electronics. It is a leading supplier of solutions in the fields of test and measurement, broadcasting, radiomonitoring and radiolocation, as well as secure communications. Established more than 75 years ago, Rohde & Schwarz has a global presence and a dedicated service network in over 70 countries. Company headquarters are in Munich, Germany. Environmental commitment Energy-efficient products Continuous improvement in environmental sustainability ISO certified environmental management system Certified Quality System ISO 9001 Rohde & Schwarz GmbH & Co. KG Regional contact Europe, Africa, Middle East customersupport@rohde-schwarz.com North America TEST RSA ( ) customer.support@rsa.rohde-schwarz.com Latin America customersupport.la@rohde-schwarz.com Asia/Pacific customersupport.asia@rohde-schwarz.com R&S is a registered trademark of Rohde & Schwarz GmbH & Co. KG Trade names are trademarks of the owners Printed in Germany (ft) PD Version April 2010 R&S ESMD Data without tolerance limits is not binding Subject to change 2010 Rohde & Schwarz GmbH Co. KG München, Germany