Table of Contents
Advertisement
5. Impulse and Resolution Bandwidth Selectivity Test
1 0 aw
Figure 4-5. 60 dB Bandwidth Measurement
4. Press MARKER In] and position the positive movable marker 60 dB
down from the signal peak on the negative-going edge of the signal
trace (the MARKER @J amplitude readout should be 0.00 dB *0.50
5. Read the 60 dB bandwidth for the 3 MHz resolution bandwidth
setting from the MARKER Ia] frequency readout (see Figure 4-5)
and record the value in Table 4-5.
6. Select the spectrum analyzer
for each resolution bandwidth setting by the procedure of steps 3
through 5 and record the value in 'fable 4-5.
7. Record the 6 dB bandwidths for each resolution bandwidth setting
from Table 4-3 in Table 4-5.
8. 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 'fable 4-5.
9. The 60 dB bandwidth for the 10 Hz resolution bandwidth setting
should be less than 100 Hz.
- 0 .
and
),
SPAN
Advertisement
Table of Contents
