Agilent Technologies E4406A, Руководство пользователя

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Chapter 4 111
Making Measurements
Making the Adjacent Channel Power (ACP) Measurement
Offset Freq- Allows you to enter an offset frequency value and
toggle the offset frequency function between
On
and
Off
. The
range is 0.0 Hz to 45.000 MHz. While this key is activated, enter
an offset value from the numeric keypad by terminating with one
of the frequency unit keys shown. Offsets A and B are defaulted
as follows, while others are defaulted to 0.0 Hz:
Offset A 750.000 kHz
Offset B 1.98000 MHz
One offset frequency value corresponding to the
Offset
key
selection is shown on this key label.
Offset Side - Choose
Neg
(negative) or
Pos
(positive) to have
single-sided offsets relative to the carrier, or
Both
(the default) to
have offset frequency pairs.
Ref BW
- Allows you to enter a reference bandwidth ranging from
300 Hz to 20.0000 MHz with the best resolution of 1 Hz. When
this parameter is changed, the integration bandwidth
Integ BW
in the summary data window changes to that value.
Avg Type
- Choose the type of averaging between
Pwr Avg (RMS)
or
Maximum
.
Limit Setup -
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.