The engineering team at Cypher
Instruments has over 50 years experience in the design of electronic
equipment for the professional and consumer market. Our expertise
covers analogue and digital electronics, filters, low noise
amplifiers, power amplifiers, signal converters, embedded code,
micro controllers, digital signal processors, serial communications,
USB drivers, PC applications, scientific test and measurement,
non destructive testing (NDT), electronic music products, data acquisition,
lasers, in fact just about every thing! If your company needs a product designed,
then contact us.
Frequency Response Analyser
The frequency response of electronic
systems is easily measured with the C60.
Below are some frequency response plots of low pass filters. The amplitude or
gain is displayed vertically in dBs and the frequency is displayed
logarithmically along the horizontal axis. The frequency axis can be drawn
linearly, which is useful for time delay filters. The phase response
(output relative to input) can also be displayed which is seen in the Elliptic filter graph
(below). The C60 is an ideal tool for designing and testing filters.
The C60 can also be used as impedance analyzer.
The device being tested is connected to the C60 output BNC, a test is performed, and
the complex impedance appears on the PC screen. Complex impedance is displayed as the
impedance magnitude and phase versus frequency. In this case, the phase shift is the
phase difference between the voltage across the test device and the current through it.
PZT ceramic resonators and transducers produce exotic impedance plots (below).
It is important to identify resonances modes when designing PZT transducers, as they can
ruin the proper operation of the device.
graph to view with Adobe Reader)