Specifications

3. Impulse and Resolution Bandwidth Accuracy Test
dB). ‘lb center the trace on screen, it may be necessary to press
SWEEP (ZGY) and adjust (CENTER FREQUENCY).
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.
Note
6 dB resolution bandwidth measurements are used in Performance
Test 4, Impulse and Resolution Bandwidth Selectivity Test.
MKR A 3.103 MHz
, LzEAIE\ -9 .O, dBm , ATT,EN I*
0.00 dB
u,I
A
I I
I I I
I I I \
/
/
I
CENTER 100.00 MHz
SPAN 5.00 MHz
RES BW 3 MHz
VBW 3 MHz
SWP 20.0 rnsec
Figure 4-3. 6 dB Resolution Bandwidth Measurement
46. Select the spectrum analyzer (RESBW_) and [FREQUENCY SPAN)
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.
4-6 Option 462