Rohde and Schwarz has expanded the frequency range of its SMA100A analogue high-end signal generator. The instrument can now be used for applications up to 3GHz - and optionally 6GHz - in the lab, production and service. Equipped with the R and S SMA-K25 option, the R and S SMA100A can even generate VOR/ILS signals for tests on radio navigation receivers.
The signal generator offers excellent signal quality, short setting times and a compact design.
T and M applications such as adjacent-channel or phase noise measurements or local oscillator applications call for a signal source of high spectral purity.
The R and S SMA100A with a frequency range from 9kHz to 6GHz ideally meets this requirement.
The signal generator comes with single-sideband phase noise of typically -135 dBc (at 20kHz carrier offset, 1GHz carrier frequency, 1Hz measurement bandwidth) and correspondingly low broadband noise of typ.
160 dBc (at 10MHz carrier offset, 1GHz carrier frequency, 1Hz measurement bandwidth).
Featuring an innovative synthesiser concept, the R and S SMA100A delivers a signal of high spectral purity, whose nonharmonic components are suppressed to typically -100dBc starting at 10kHz offset from the carrier.
The R and S SMA100A generates amplitude (AM) and pulse modulated signals as standard.
Frequency and phase modulation are optionally available.
Adding the R and S SMA-K23 option, for example, will upgrade the instrument to give a high-end pulse generator for mil/aero applications.
The new R and S SMA-K25 option also makes the R and S SMA100A a high-precision VOR/ILS signal source.
Due to its low modulation errors and very high level accuracy, the R and S SMA100A can reliably test air navigation receivers.
VHF (omnidirectional radio beacon) is used by aircraft for in-flight navigation.
ILS (Instrument Landing System) is a ground-based system that supports pilots during approach and landing.
The 6GHz version of the analogue signal Generator R and S SMA100A as well as the R and S SMA-K25 option are now available from Rohde and Schwarz.
Sunday, August 20, 2006
BenchMaster 8 from Kemo is a full redesign of the company's classic VBF 8 dual-channel benchtop filter/amplifier - originally launched in 1975 and now in its fifth generation, with thousands of the earlier units in use worldwide. The new version of BenchMaster 8 makes extensive use of surface-mount technology to speed manufacture and delivery as well as offering a number of performance enhancements including increased gain, lower noise, a higher dynamic range and a wider range of filter responses. The new unit is available with a range of different filter types, including Butterworth, Bessel (four- and eight-pole), general-purpose linear phase, and anti-aliasing responses.
The filter frequency range is from 0.01Hz to 99.9kHz filter.
The two independent channels can each be switched between highpass and lowpass.
They can also be combined in series or parallel to give two channels of lowpass, two channels of highpass, one lowpass/one highpass, bandpass (series connection) and bandstop/notch filtering (parallel connection).
The basic filter response has three modifier settings: a minimum overshoot pulse mode for impulsive signals; a flat mode that provides a flattened response to cutoff; and a Butterworth type response with -3dB at cutoff frequency.
Using the flat modifier, true 16-pole Bessel and Butterworth filters can be set, maintaining -3dB at cutoff.
The BenchMaster 8 has easy-to-use clear front-panel controls, with BNC input and output.
The inputs can be AC or DC coupled, single-ended or differential.
Up to +54dB (x500) of gain can be applied in nine steps to the input before filtering, with four-stage LED signal-level indication.
A 4mA current source is also available for powering IEPE (integrated electronics piezoelectric) transducer powers, with indication of correct connection.
An optional 10-30V DC power input allows the instrument to be used for portable and in-vehicle applications.
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