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Chapter 4 127
Making Measurements
Making the Adjacent Channel Power (ACP) Measurement
Avg Type - Choose the type of averaging between Pwr Avg (RMS) or
Maximum.
Limit Setup - Allows you to access the menu to setup the limit
values and conditions.
Abs Limit - Allows you to enter an absolute limit value ranging
from
−200.00 to +50.00 dBm with 0.01 dB resolution.
Fail - Allows you to access the following menu to select one of
the logic keys for fail conditions between the measurement
results and the test limits:
AND - Fail is shown if one of the relative ACP measurement
results is larger than
Rel Lim (Car) or Rel Lim (PSD) AND one
of the absolute ACP measurement results is larger than
Abs
Limit
.
OR - Fail is shown if one of the relative ACP measurement
results is larger than
Rel Lim (Car) or Rel Lim (PSD) OR one of
the absolute ACP measurement results is larger than
Abs
Limit
.
Absolute - Fail is shown if one of the absolute ACP
measurement results is larger than
Abs Limit.
Relative - Fail is shown if one of the relative ACP
measurement results is larger than
Rel Lim (Car) or Rel
(PSD)
.
Rel Lim (Car)- Allows you to enter a relative limit value of the
carrier level ranging from
−150.00 to +50.00 dBc with 0.01 dB
resolution. The default is
−45.00 dBc for Offset A and −60.00
dBc for offset B.
Rel Lim (PSD)- Allows you to enter a relative limit value of the
power spectral density level ranging from
−150.00 to +50.00
dB with 0.01 dB resolution. The default is
−28.87 dB for Offset
A and
−43.87 dB for offset B.
Offset Adv - Allows you to access the menu to change the following
advanced offset parameters:
Sweep Time - Allows you to select the sweep time manually
(
Auto is the default).
Data Points - Allows you to select the number of data points. The
automatic mode chooses the optimum number of points for the
fastest measurement time with acceptable repeatability. The
minimum number of points that could be used is determined
by the sweep time and the sampling rate. You can increase the
length of the measured time record (capture more of the burst)
by increasing the number of points, but the measurement will
take longer (2048 is the default in
Auto).