
3. Impulse and Resolution Bandwidth Accuracy
center the trace on screen, it may be necessary to press
SWEEP
and adjust
(
CENTER FREQUENCY
).
45. Press MARKER
and position movable marker 6
down
from the signal peak on the negative going edge of the trace (the
MARKER
amplitude readout should be 0.00
The
6
bandwidth is given by the MARKER
frequency readout.
(See Figure 4-3.) Record in Table 4-2.
6
resolution bandwidth measurements are used in Performance
Test 4, Impulse
and
Resolution Bandwidth Selectivity Test.
Figure 4-3. 6
Resolution Bandwidth Measurement
46. Select the spectrum analyzer
and
[
FREQUENCY SPAN
)
settings according to
4-3. Press SWEEP
and
measure the 6
bandwidth for each resolution bandwidth
setting using the procedure of steps 43 through 45 and record the
value in
4-3. The measured bandwidths for 300 Hz, 100
Hz, 30 Hz, and 10 Hz should fall between the limits shown in the
table.
4-6 Option 462