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The default is spectrum analyser “SPECT”, if this is not already selected push
SPECT
.
The LCD legend “OP.MODE : SPECT” confirms selection.
5) Go to menu 4, if necessary use the
PREV
NEXT
keys or press the numeric key
. This menu
is used to input the centre frequency, define span width and sample rate.
Push the
CF
key and enter the required centre
frequency in MHz format. In this example select 95
MHz followed by
. The LCD legend “CF :
95.00000MHz” confirms entry.
Push the
SPAN
key and enter the widest span
width of 10000kHz (10 MHz) using kHz format
Leave the RBW set to 30 kHz. (Ensure that the
SDU5500 gain control is set to “High”, menu 2).
The LCD should be displaying a centre frequency of 95 MHz with a spread of 5 MHz on either side
(the screen representing 90 MHz to 100 MHz from left to right). Active signals will populate the LCD.
The “CF” and “Marker” frequencies are currently the same and the “CF” is what the companion radio is
tuned to... what you are listening to.
Section 5-2
