PTE-50-CET
Sheet 11
10.
Microcontroller
: it is one of the most important parts of the unit, which as its name indicates,
controls or establishes the flow of information between all the functional blocks previously
mentioned.
2.3.
INTELLIGENT GENERATOR MODULE
Essentially, the IGM is a linear power amplifier, controlled by its internal microprocessor. It produces
the sinusoidal signal in the frequency and the phase selected. This is amplified and adapted by a
transformer in the selected output range. This generator also feedbacks the output level in voltage,
current, and phase, to the generation stage, thus achieving a high accuracy output.
Figure 4:
Intelligent Generator Module
As shown in the block drawing and in the front panel control functions, a microprocessor is in charge
of supervising all the functions of the generator modules. These receive the output measurements and
make the corrections necessary in amplitude and phase to obtain the desired accuracy. Also they
store the calibration parameters, and use them to correct the selections made from the
Front Panel
.
2.4.
POWER SUPPLY
As in all off the systems that produce an output which is absolutely independent of the main supply,
the PTE-50-CET needs to have a D.C. power supply, that converts the AC input of the main supply, to
a DC that supplies the power amplifiers. This is achieved by using a combination of switching and
linear DC power supplies.
