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

Making Measurements
Using the Swept List Mode to Test a Device
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 Setup SWEEP TYPE MENU
Set Up the Lower Stopband Parameters
3. To set up the segment for the lower stopband, press
1-70
M/
M/
EDIT LIST