Televes 5930 Manual De Instrucciones página 23

4 .- Analysis of the frequency response of the
fi lters and amplifi ers, thus allowing their
adjustment.
In this case it is usually advisable to use the -30
dB output of the noise generator, in order to
avoid saturation in the single channel amplifi er.
Remember that if the -30 dB is used, you must use
a 75 W load in the main output.
- Connect the noise generator to the amplifi er
input (in this case it is a single channel amplifi er).
The signal at the generator output is as follows:
- Connect the fi eld meter to the amplifi er output.
- Check that the noise in the input does not
saturate the amplifi er.
- Next, the signal at the fi lter output is shown:
The power gain of a single channel amplifi er is
calculated as follows:
GAIN = POWERoutput - POWERinput
The amplifi er's gain using this example would be:
100.4 - 44.1 = 56.3 dB.
- Make the necessary adjustments in the fi lter until
the output is optimum.
23
EN