Keysight Technologies N9321C, Руководство пользователя

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Functions and Measurements
Measuring Stop Band Attenuation of a Lowpass Filter
62
Measuring Stop Band Attenuation of a Lowpass Filter
When measuring filter performance, it is useful to look at the
stimulus response over a wide frequency range. Setting the
analyzer y-axis (amplitude) to Log scale type presents the
measurement data in a usable format for determining filter
characteristics.
The following example uses the tracking generator to measure the
stop band attenuation of a 370 MHz low pass filter.
1 To measure the response of a low pass filter, connect the
equipment as shown in Figure 3-20 . This example uses a 370 MHz
low pass filter.
Figure 3-20Transmission Measurement Test Setup
2 Press
Preset
. (With
Preset Type
of
Factory
)
3 Set the start and stop frequencies and resolution bandwidth:
Press
Frequency > Start Freq > 100 > MHz
Press
Frequency > Stop Freq > 1 > GHz
Press
Amplitude > Scale Type > Log
Remote
Standby
On
TG SOURCE CAL OUT
50MHz 10dBm
7
·
4
1
0
2
5
8 9
6
3 Back
Enter
Marker
Peak
Search
Marker
Auto
Tune
Det/
Display
File/
Print
BW/
Avg
View/
Trace
Meas MODE
Sweep/
Trig
Local
Save
N9320A
SPECTRUM ANALYZER 9 kHz - 3.0 GHz
PROBE POWER
RF IN 50
50VDC MAX
30dBm 1W MAX
CAT Ⅱ
DUT