SLM2200: Dual frequency, automatic centeringSelective Level MeterA versatile DFT ysis instrument (Discrete Fourier Transform) using DSP & FPGA technology with modern ogue techniques for optimum performance, speed of measurement and convenience.Dual frequency selective level meter The SLM2200 uses powerful DSP ysis to deliver accurate measurements quickly and easily. Believed to be the only dual frequency selective level meter available, it simultaneously yses for two independent frequency components. The noise rejection of the processing allows signals to be measured even when buried in wideband noise. True real-time processing (no missed data) with a selectable filter time constant allows measurements to be made even with varying signals. The isolation of the inputs allows connection of the SLM2200 in any environment up to 500V cat II. Automatic tuning The automatic tuning algorithm scans a frequency range for two frequency components. The SLM2200 then tunes the center of the pbands to the frequency of the two components present using a series of narrowing sweeps with increasing resolution. Once the frequencies have been determined, the magnitudes are monitored and displayed in real time. Easy to use Despite it's sophisticated measurement capability it is very easy to use. The versatile graphic display allows results to be viewed as graphs, multiple data values, or large single values as appropriate. | SLM2200 dual-frequency, auto-centering selective level meter |
A tical application for the SLM2200 is in testing of FSK telemetry. Traditionally, to measure the frequency and magnitude of the two frequency components the tranitter would have to be forced to tranit all 'ones' or all 'zeroes' in turn, and the measurements made on signals significantly greater than the noise floor. Using the SLM2200, the signals may be measured for both frequency and magnitude of the two components simultaneously at the receiver without changing the tranitter, even if the signals are noisy. |
