Table of Contents
Advertisement
F U N C T I O N
Example
Set start/stop frequency to monitor FM broadcast band
Note that horizontal scaling is
unchanged, although the START/STOP frequency
readouts are replaced by center frequency and span
(108 - 88 = 20 MHz).
REFERENCE LEVEL
The REFERENCE LEVEL function changes the absolute amplitude level of the top graticule line. The vertical
scale (amplitude units per division) is selected from the SCALE control group. To measure signal level, the peak of
the signal's response is positioned on the top graticule line and its amplitude is read
The reference level can be adjusted from - 89.9 dBm to + 30 dBm ( - 139.9 dBm to + 60 dBm with extended
range) with 0.1 dB resolution. The input attenuator is automatically coupled with the reference level to prevent
gain compression; signals which are above the gain compression point will be displayed above the reference level
line. Different mixer input levels as well as amplitude units can be selected (see (L*lrl FUNCTIONS Chapter 11).
t i i i i ii i i i I
from REF LEVEL.
out
Manual Operation 25
REFERENCE LEVEL
Advertisement
Table of Contents
