R&S®EK896 VLF-HF Receiver

Descrizione

• The compact and modular VLF-HF receivers are ideal for use in stationary, mobile and remote receiving systems. Due to the modern and flexible concept, the receivers can be used as communication receivers in communication networks and for fast search, scanning, radio detection and radiomonitoring tasks. Moreover, the units are optimally suitable as highperformance frontend units (e.g. for special post-processing applications (COMINT) as well as for DF systems. The R&S® Series 890 VLF-HF Receivers use digital signal processing (DSP) for IF, demodulation and AF. The DSP, equipped with a very powerful microprocessor, offers a variety of additional features to the user such as automatic signal processing, signal optimization and high operating convenience. All this significantly improves the attainable reception quality. The very compact ? 19 single receivers or 19 (rackable) single or dual receivers allow any type of system combinations in the form of operator positions or handoff receivers (master-slave operation). Handoff or remote receiving operation over any distance is possible without any constraints using master (R&S EK896)/slave (R&S EK895) concepts.
• 19 DSP-based receiver for radiomonitoring and detection, radiocommunications, master receiver for radio workstations The R&S® EK896 has especially been designed for complex tasks of radiodetection and search reception, its operating principle and configuration perfectly match the relevant requirements. It is fitted as standard with panel controls and LC display for local and remote-control operation since radiomonitoring practically always requires manual optimization of receive parameters. High-speed and reliable radiomonitoring is supported by temporary storage of a complete receiver setup and its transfer to or readout from the connected slave. The R&S® EK896 is the optimal operator’s position in modern radiomonitoring systems. In the usual master-slave mode, a master receiver can control up to 99 slave receivers via additional line drivers to handle simultaneous radiomonitoring or specific radiodetection tasks. Due to its outstanding characteristics, the R&S® EK896 is also ideal for use as a standalone receiver. All R&S® EK895 options can be fitted.
• Main features
  • Digital signal processing (DSP) for convenient and versatile operation
  • Digitally tuned RF selection (optional)
  • Realtime remote control or masterslave mode
  • Well-proven system concept
  • Excellent price/performance ratio
  • Extremely reliable operation under harsh environmental and EMC conditions
  • Application-specific options/accessories available

• The built-in memory has capacity for nonvolatile storage of 1000 complete channel settings so that channel management and control by an external computer are not required but nevertheless additionally possible.
• Receivers with remote-control panel The receivers can be remote-controlled by ASCII command sequences via a multistandard interface (RS-232-C, RS-485, RS-422/423, 2/4-wire). In the simplest case, a terminal can be used as the control unit. For more convenience a computer can be used to handle complex tasks and to create special user interfaces. A demo program for generating a virtual front panel is available if desired. A remote control unit (R&S® GB899) permits full remote control via the serial interface, and with external line modems, over any distance. Two wired and bus-integrated slots for plug-in modules are provided in the R&S® EK896 for extensions. The comprehensive sequence control can be used for all demanding shortwave reception tasks. Due to flexible programming of the processor, the following operating modes are possible:
  • Manual operation
  • Remote control or master-slave operation
  • Channel scanning, sequential and programmable
  • Frequency scan
  • Channel reception
  • Password-protected channel reception
  The R&S® EK896 is based on the R&S® EK895 base model.
• Special operations
  • Master-slave operation
  • Complete erasure of channel memory
  In addition, the following functions can be selected on the front panel:
  • Display of interface configuration
  • Fast channel storage
  • Channel buffer storage
  • Default settings on/off
  • Password for channel service
  • Local/remote mode
  • Rotary wheel increments

• Excellent large-signal behaviour, very good intercept points
• High resolution of tuning frequency down to 1 Hz
• Fast and low-noise synthesizer
• Demodulators for AM, CW, LSB, USB, ISB, FM, FSK, AFSK and FAX included in basic configuration
• 128 bandwidths from 100 Hz to 9 kHz
• RF preamplifier, switchable (noise figure 8 kT0)
• Double notch filter
• Noise blanker
• Passband tuning
• Syllabic squelch
• Special RTTY (FSK/AFSK) mark and space filters, matched to the selected shift
• Direct, fast-access key panels
• Digital data output
• Maximum input voltage protection up to 100 V EMF (up to 200 V EMF, see option)
• Control interface fully complying with international standards
• Digitally tuned RF selectors (optional)
• Built-in speaker, switchable
• Large rotary knob
• Low power consumption <25 VA (R&S® EK896 base model), therefore little self-heating
• Powerful microprocessor for bus interfacing, menus, and user programs
• Receiver as 19 desktop or rack model
• Free slots for retrofitting of options
• Integrated self-test down to module level with plain-text result display