Observe The Characteristics Of The Filter; Choose The Measurement Parameters - Agilent Technologies 8753ET User Manual

2. Set the following measurement parameters:
Trans: FWD S21 (B/R)
Meas
Center 900
Span 500

Observe the Characteristics of the Filter

Figure 1-57 Characteristics of a Filter
• Generally, the passband of a filter exhibits low loss. A relatively low incident power may
be needed to avoid overdriving the next stage of the DUT (if that stage contains an
amplifier) or the network analyzer receiver.
• Conversely, the stopband of a filter generally exhibits high isolation. To measure this
characteristic, the dynamic range of the system will have to be maximized. This can be
done by increasing the incident power and narrowing the IF bandwidth.

Choose the Measurement Parameters

1. Decide the frequency ranges of the segments that will cover the stopbands and
passband of the filter. For this example, the following ranges will be used:
• Lower stopband: 650 to 880 MHz
• Passband: 880 to 920 MHz
• Upper stopband: 920 to 1150 MHz
2. To set up the swept list measurement, press:
SWEEP TYPE MENU
Sweep Setup
or on ET models:
M/µ
M/µ
EDIT LIST
Making Measurements
Using the Swept List Mode to Test a Device
TRANSMISSN
1-71