Viavi 3900 Series Operation Manual page 254

7. 5. 3. A. 4 Le vel
Th e Le ve l fie ld se ts the R F Ge n era to r O u tpu t L ev el. Th e se lec te d R F O ut pu t le ve l is
de pe n de nt on th e R F O ut pu t p ort se lec te d. Th e i nd ica te d R F ou tp ut is m o dif ied if a n RF
Le ve l O ffs et va lue is se t. U n its of me a su re are d Bm , V an d d B uV .
R efe r to A pp e nd ix B , 3 90 0 Pla tfo rm S p ec ifica tio ns fo r o utp ut inf orm a tio n.
E M F o r P D
7. 5. 3. A. 5 Le vel I nc
Th e Le ve l In c f ield d efin e s th e RF O u tpu t L ev e l inc re m en tal ch an ge v alu e in d B . T his
va lue is ap p lied to th e R F O ut pu t L ev el w h en th e IN C G e n Le ve l/D E C Ge n Le ve l S of t
Ke y s a re pre s se d.
7. 5. 3. A. 6 M od (M od ul a tio n )
Th e M od (M o du lat ion ) m e nu s ele cts th e t yp e o f m o du la tion a pp lie d to th e RF O u tpu t
Si gn al.
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A n al og D up le x S y st em
Wh e n th e R F O u tpu t L e ve l un it o f m e as ur em e nt is V o lts, the v alu e
c an b e d isp la ye d a s EM F o r P D .
F ig. 7-3 4 E MF a nd P D In dic ato rs
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