P1Db Normalization - Promax AE-166 User Manual

Spectrum analyser
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WARNING:
NOTE:
4.1.19

P1dB Normalization

Description
The normalize function is used to compensate for any loss from a long cable
that may cause inaccurate measurements.
This function relies on the DUT being directly connected to either the TG or
the RF input. The position of the long cable in relation to the DUT (input or
output) will affect the P1dB measurement.
If the cable is at the DUT input, then the line loss of the cable will reduce the
output of the TG before it is input to the DUT. This configuration (Location =
Prev) can affect the position of the P1dB point if not normalized.
Likewise if the cable is connected to the output of the DUT, then the gain of
the DUT will be reduced at the RF input by the line loss of the cable. In this
configuration (Location = Post) the P1dB point will not be affected.
NOTE:
131
If the equivalent gain exceeds 30 dBm the gridicule area will
be bordered in red to indicate that the input exceeds
specified levels.
The maximum power the DC output can provide is 7 volts /
500 mA.
If a DUT cannot be directly connected to the TG output or
the RG input, try to use the shortest cable possible to
reduce the effect of cable loss. The line loss from short
cables cannot be measured when using the Normalize
function.
Figure 98.
February 2017

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