Amplifiers still need to be stable (K,B), achieve a required linearity (P1dB, IIP3, ACP) and be correctly matched for a combination of gain, noise figure or power. Signal sources must achieve spectral purity or phase noise targets, power levels, pushing and pulling specifications.Telestrian's network analyser, spectrum analysers, signal generators and power meter are used to measure these types of parameters.
Some modulation standards are built into digital signal generators, others may be generated by downloading a data list to the instrument and defining the modulation, symbol rate and data filter. This method was successfully adopted for both 802.15.4 and GPS.
Complex standards can be generated by using VSS™ from AWR™ coupled with an AMIQ (a dual channel arbitrary wave form generator), WINiqSIM™ and a vector signal generator such as an ESG or SMIQ. The 802.11 standards are generated by downloaded a data file by WINiqSIM™ into the AMIQ which then modulated an SMIQ vector signal generator.
Transmitted signal quality information may be obtained from a FSIQ or 89441A VSA. Again if the standard is not present within the instrument, a data capture may be made that can then be externally processed.These methods allow Telestrian to generate and measure most modulation standards.
All the RF test equipment at Telestrian is GPIB controllable.