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SECTION 5
COMMON PRACTICES
5-1-6
GENERATING RF SIGNAL USING EXTERNAL MODULATION
This pr ocedur e configur es the RF G ener ate O per ation Scr een to tr ansmit an RF Signal
FM Modulated with 1 kHz Exter nal Modulation Sour ce.
P
R
E
P
o
Set RF Field to Rcvr Center Frequency .
o
Set O utput Level to -50 dBm .
o
Set O utput to T/R .
o
Select Exter nal Modulation ( EXT ) for Modulation Sour ce.
o
Set Modulation Type to FM .
o
Set Deviation Range to NAR 3 .
o
Configur e RF G ener ate O per ation Scr een for active SCOPE .
o
Set O scilloscope Sweep for 1 ms/div .
o
Set O scilloscope Sour ce for Scope/DVM-AC .
o
Connect Exter nal Modulation Sour ce to SCO PE/DVM IN Connector .
o
Set Exter nal Modulation Sour ce for 2.5 Vp. This setting pr oduces 5 kHz Deviation
independent of signal shape.
o
Connect Exter nal Modulation Sour ce to EXT MO D IN Connector .
The deviation is set at 5 kHz by adjusting the input level of the Modulation
Signal.
The O utput Level is - 50 dBm.
5- 12
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