Agilent Technologies Agilent 4396B - Manual (Page 82)

Figure 4-15. Zooming Carrier Signal of FM Signal
Press 4 Displa y 5
N NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
DUAL CHAN ON off to
N NNNNNNNNNNNNNNNNNNN
on OFF and then 4 Chan 1 5 when
you are nished with this measurement.
Narrow Band FM Signal Measurement
1. Change the test signal source to the narrow band FM signal.
2. Press 4 Chan 1 5 4 Span 5 100 4 k/m 5 4 Bw/Avg 5 10 4 k/m 5 . The spectrum of
the narrow band FM signal is displayed.
3. Press 4 Scale Ref 5 010 4 21 5 .
Figure 4-16. Narrow Band FM Signal Measurement
4. Press 4 Chan 2 5 4 Span 5 100 4 k/m 5 4 Bw/Avg 5 10 4 k/m 5 4 Scale Ref 5 010 4 21 5 as
same as channel 1.
5. Press 4 Displa y 5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
DATA HOLD [OFF]
NNNNNNNNNNN
MAX and then wait for a few
sweeps until the trace is stable . The maximum envelope is
displayed.
6. Press 4 Displa y 5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
DATA ! MEMORY
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
DATA and MEMORY to store and
display the maximum envelope .
4-14 Spectrum Measurement Examples