Agilent Technologies HP 8566B Spezifikationen Seite 373

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Seitenansicht 372
4. Impulse and Resolution Bandwidth Selectivity
Test
4.
5.
6.
7.
8.
9.
MKR
A
14.04
MHz
f?P
REF
0.0
dBrn
ATTEN
10
dB
-0.30
dB
10
dB/
CENTER
SPAN
20.0
MHz
I
II
100.0
MHZ
RES
BW
3
MHz
VBW
100
HZ SWP
500
msec
Figure 4-5. 60
dB
Bandwidth Measurement
Press MARKER [al and position the positive movable marker 60
dB
down from the signal peak on the negative-going edge of the signal
trace (the MARKER
Ia]
amplitude readout should be 0.00
dB
f0.50
dB).
Read the 60
dB
bandwidth for the 3 MHz resolution bandwidth
setting from the MARKER
m
frequency readout (see Figure 4-5)
and record the value in
‘fable
4-5.
Select the spectrum analyzer
(RES?iEEQ
[FREQUENCY SPAN), and
CVlDEo]
according to
Table
4-5. Measure the 60
dB
bandwidth
for each resolution bandwidth setting by the procedure of steps 3
through 5 and record the value in Table 4-5.
Record the 6
dB
bandwidths for each resolution bandwidth setting
from Table 4-l in
Table
4-5.
Calculate the bandwidth selectivity for each setting by dividing the
60
dB
bandwidth by the 6
dB
bandwidth. The bandwidth ratios
should be less than the maximum values shown in Table 4-5.
The 60
dB
bandwidth for the 10 Hz resolution bandwidth setting
should be less than 100 Hz.
4-14
Option 462
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