Omicron Lab Bode 100, Руководство пользователя, Страница: 21 / 133

6.2.1 Measurement configuration
Frequency
In Frequency sweep mode you can change either Start
frequency and Stop frequency or Center and Span.
Get from zoom updates Start frequency and Stop
frequency with the current zoom window range.
Furthermore, the sweep mode can be Linear or
Logarithmic and the number of points in the sweep can
be chosen.
In Fixed Frequency mode only the Source frequency
can be adjusted. In this case the Bode 100 will display a
vector chart instead of a frequency dependent chart.
Source level
Choose between a constant or variable output level
(shaped level) and set the source level. The variable
output level feature is only available in Frequency
sweep mode. It allows to define different source levels
for different frequency points. To learn more about the
source control, refer to
9.2 Signal source settings on
page 98.
Attenuators
Set the input attenuators for Receiver 1 (Channel 1) and
Receiver 2 (Channel 2). If the measurement mode
supports two measurements (Transmission and
Reflection) you can set the attenuators for each
measurement. Possible attenuator values are 0 dB,
10 dB, 30 dB and 40 dB. Increase the attenuators when
you experience an overload, reduce the attenuators to
improve signal to noise ratio.
Receiver bandwidth
Set the maximum Receiver bandwidth used for the
measurement. Receiver bandwidth will be reduced
internally if the measurement frequency is smaller than
the Receiver bandwidth setting.
Select a high Receiver bandwidth to increase
measurement speed.
Reduce Receiver bandwidth to reduce noise and to
catch narrow-band resonances.
Bode Analyzer Suite introduction
OMICRON Lab 21