Db Resolution Bandwidth Measurement - HP 8566B Adjustment Manual

3. Impulse and Resolution Bandwidth Accuracy Test
4-6 Option 462
SWEEP (ZGY) and adjust
45. Press MARKER Ia] and position movable marker 6 dB down
from the signal peak on the negative going edge of the trace (the
MARKER [nl amplitude readout should be 0.00 dB *O.O5dB). The
6 dB bandwidth is given by the MARKER [nl frequency readout.
(See Figure 4-3.) Record in Table 4-2.
6 dB resolution bandwidth measurements are used in Performance
and
Test 4, Impulse Resolution Bandwidth Selectivity Test.
Figure 4-3. 6 dB Resolution Bandwidth Measurement
46. Select the spectrum analyzer (RESBW_) and
settings according to 'Ihble 4-3. Press SWEEP C-j and
measure the 6 dB bandwidth for each resolution bandwidth
setting using the procedure of steps 43 through 45 and record the
value in 'Ihble 4-3. The measured bandwidths for 300 Hz, 100
Hz, 30 Hz, and 10 Hz should fall between the limits shown in the
table.
( ).
CENTER FREQUENCY
[
FREQUENCY SPAN
)