ultrasound image in the monitor is the same, the
problem is to determine if the problem is in
transmission or in reception, When there is no image
the ultrasound he sector is black, the procedure is to
set the gain at maximum value and all slides of the
STC at right, if you watch some noise in the monitor
the problem is not in reception, because the probe is
working like an antenna getting signals around from
any device and is sending them to the amplifier, so
the problem is in transmission, but if there is no
noise in the monitor, it means that the receiver is not
able to amplify even the noise and of course the
problem is in reception, when we say that the
problem is in reception, is not in a particular board,
because the echo digital processing which is not
included in what is call reception, has to deal with
the ultrasound image.
Fig 9
Fig 10
When there in not ultrasound image in the monitor,
but characters, the problem is not the monitor, like in
TV, no image means that the problem is in the
reception of the signal, the antenna, any device
which receive the signal transmitted or any circuit
inside the TV, then the problem is in reception, or the
problem may be in transmission because the
transmitter is no transmitting, and when there in not