Assume that the measured level at 2.0 kHz is -10 dBm.
conclude from this reading that amplitude-frequency equalization is
not necessary since the level variation is within limits.
necessary because the level at this frequency is greater than at
necessary because the loss exceeds the parameter limits at this
The experienced circuit conditioner will study the parameter limits
before he attempts amplitude-frequency equalization to find the most
critical area (minimum variation) of the parameter. The most critical
area in parameter S3 for amplitude-frequency equalization is shown in
figure 3-8 to lie between the frequencies of
0.3 and 0.5 kHz.
0.5 and 2.8 kHz.
1.0 and 2.8 kHz.
2.8 and 3.0 kHz.
Assume that the output level of a calibrated oscillator varies after
it is connected to the line. This is an indication that the
output level is set at the wrong value.
wrong frequency is being used for the test.