G En Er Ato Rs Til - Viavi 3900 Series Operation Manual

7.5.3 Gen erat or s T ile
Th e G en er ato rs Tile c on tro ls t he T es t S et's R F, A F a nd M o du lat ed S ign al G en er ato rs .
Th e us er ca n s e lec t e ithe r th e T/ R o r G E N (G e ne ra tor ) C on ne ct or as th e R F S ign al
G en er ato r o ut pu t s ou rce . T h e A F S ign al G en er ato rs , A F1 , A F 2 a nd A F 3, are c om b ine d for
ou tp ut a t t he F C TN G EN /D E M O D C o nn ec tor . Th e R F o utp ut c an be m o du la ted by th e s um
of the M o du lat ors , M o d 1 a nd M o d 2 , p lus th e E x ter na l in pu t (A u dio In or M icr op ho ne ).
7. 5. 3. A RF G en er ato r Fi el d D efi ni ti on s
Th e RF G e ne ra tor fie lds on th e G en era to rs Tile a re us ed co n figu re th e 3 9 00 R F S ig na l
G en er ato r.
7. 5. 3. A. 1 RF F re q
Th e RF F re q f ield s ets th e R F O ut pu t fre q ue nc y o f th e Te st Se t R F G en e rato r. Un its of
m ea su re ar e G H z , M H z, k H z a nd H z as de fin ed b y u se r.
7. 5. 3. A. 2 Fr eq I n c
Th e Fr eq In c field d ef ine s the R F O utp u t F re qu en cy in cre m en ta l c ha ng e va lue . T h is is th e
va lue b y w h ich th e R F O u tpu t F re qu en cy is ch an ge d w he n t he IN C G en F req /D E C Ge n
Fr eq So ft K ey s a re u se d . U n its o f m ea s ure are G H z, M H z, k Hz an d H z a s d ef ine d b y u se r.
7. 5. 3. A. 3 Dx O ffset
Th e Dx O ffs et fiel d d ef ine s t he D up lex O ffs et fre qu en cy v alu e. Th e freq u en cy va lu e s et
he re in di ca tes t he d iffe re nc e be tw ee n th e R F G en e rato r ou tp ut a nd th e R F A na ly ze r in p ut
w he n t he G en F re q = A na F req + D x O ff se t S oft Ke y so ft k ey is ac tive . U n its o f m e as ur e
ar e M H z , kH z an d Hz a s d ef ine d b y us er .
A n al og D up le x S y st em
F ig. 7- 33 G e ne rat ors T ile - R F Ge n era to r F ield s
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