Signal generators are devices that are
primarily intended for testing the transmitters. In addition, experts use them
to measure the characteristics of analog converters. Testing the model
transmitters occurs by simulating signal. It is necessary to check the
appliance for compliance with modern standards. Signal directly to the device
can be fed in pure form or distortion. Its rate of the channels can vary
greatly.
If we look at the traditional model of a
signal generator, the front panel display can be seen. We need it to follow the
vibrations and carry out control. At the top of the screen is an editor that
offers a variety of different functions. Further below is device which shows
the vibration frequency. Signal amplitude or offset level can be controlled by
two buttons. To work with files a separate mini-bar. With the help of the test
results can be stored or immediately open.
Make a DDS signal generator with your own hands is problematic because of the
complexity of the device. The main element of the equipment is considered to be
a selector. It is designed to model a certain number of channels. In the device,
there are usually two circuits. For adjusting the generator frequency
synthesizer is required. If we consider the multi-channel devices, the
microcontrollers are suitable for them KN148 series. Converters are used only
analog type. And at first, you should have a DDS signal generator kit.
Sinusoidal signal generator circuit uses a
fairly simple. Amplifiers operating with only type may be used. This is
necessary for the normal fee for transmitting a signal from the resistors.
Potentiometers are included in the system rated at least 200 ohms. Pulse duty
cycle depends on the speed indicator generation process. For flexible tuners
installed multi-channel devices. The frequency range generator sinusoidal
signal changes using the rotary control. To test the receivers it is suitable
only modulation type. This suggests that the channels of the generator should
be at least five.
没有评论:
发表评论