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MDS RT Spectrum
Application is
designed to operate in conjunction with digitizer and receiver.
It's main purpose is to show actual RF spectrum. Additionally it can save collected spectrum data for future analysis by other software.
Application can collect spectrum data in two ways - from digitizer with directly connected antenna (direct acquisition) and from digitizer connected to receiver's IF output (scan mode).
Setup for direct acquisition.
Setup for sweep scan.
Features:
- usage any kind of digitizer
- receiver control via LAN or RS232 interface
- various acquisition modes: sweep scan, sampling, undersampling, receiver IF (fixed freq.)
- GPS data registration (GPS data packets are saved "as is" with spectrum data)
- spectrum data saving for future analysis
- License - freeware, go to downloads page.
Application's hardware control and spectrum formation modules are inherited from MDS Spectrum Analyzer. So devices, operating with this application, will operate with MDS Spectrum Analyzer too.
For more detailed spectrum analysis you need more powerful software:
- MDS Audio Spectrum Analyzer - suitable for radio spectrum measurements within fixed frequency range (DC - Nyquist frequency)
- MDS Spectrum Analyzer - for real time radio spectrum analysis, signal search, occupation calculation, activity registration
- MDS Data Analyzer - for post time spectrum data analysis
Application MDS Spectrum Analyzer with receiver and digitizer can replace expensive radio spectrum analyzers.
System, based on this application and appropriate hardware, can give results in equal or even higher performance with a fraction of price for well known, good, but expensive spectrum analysis systems.
Minimum system requirements:
- Processor - 2 cores, 2 GHz
- RAM - 512 MB
- USB - 2.0
- LAN 100 mbps
- HDD 3 GB
- OS - MS WindowsXP or higher
Digitizer
Application with digitizing device communicates indirectly, through dynamic link library (DLL). DLL for sound card is included in installation package, DLL for other device must be programmed additionally by user or us.
The DLL functions are responsible for the communication with device or it's driver. So digitizer could be any device which has some interface to transfer data to PC. Digitizer's characteristics (sampling rate, dynamic range, data transmission to computer speed, etc.) must meet the job requirements. Digitizer's max vertical resolution - 16 bit (96 dB dynamic range). It is possible to use digitizer with lower resolution (less bits - smaller dynamic range), if user prefers.
RF receiver
Application can control one receiver. Scanning receiver is used for spectrum data formation. Spectrum scan is performed by stepping receiving frequency from lower start frequency to upper stop frequency. Program takes digitized IF signal data, stores it in the RAM and at the end reconstructs scanned spectrum.
Program can control almost any receiver which has LAN or RS232 interface. User can manually define SetFrequency and GetFrequency command syntax. There are predefined settings for Icom IC-R8500 and R&S EB200 receivers.
Requirements for radio receivers:
1. Radio receivers must have LAN or RS232 interfaces.
2. Receiver must support TCP protocol.
3. Receiver must accept commands in ASCII charset, except Icom IC-R8500 (it's control commands included).
4. Scanning receiver should accept two commands - command to set frequency (required) and command to find out (read) frequency (not required).
GPS receiver
Program has possibility to read data packets from GPS receiver (RS232 interface).
Pictures
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