Tw O P Ort D Up Lex - Viavi 3900 Series Operation Manual

3.11.4 . Tw o P ort Du pl ex
Th e re a re th re e ty pe s of Tw o Po rt Du p lex se tu ps w hic h c an b e u s ed fo r m ea s urin g RF
G en o utp ut an d RF A na ly ze r in pu t.
3. 11. 4 .A GE N /AN T
Se le ctin g the G E N C on ne cto r f or RF O u t an d the A N T Co nn e cto r fo r R F In pu t p rov id es
th e h igh e st le ve l o f R F G en O ut pu t a nd th e m o st se ns itiv e R F A na lyz er inp ut .
Th e AN T Co n ne cto r is typ ica lly u se d as the In pu t co nn e cto r fo r "o ve r-th e -air " tes tin g w ith
se pa ra te an te nn as .
3. 11. 4 .B GE N /T R
Se le ctin g the G E N C on ne cto r f or RF O u t an d T/ R C o nn e cto r fo r R F In pu t p rov id es the
hig h es t le ve l of R F G e n O u tp ut an d a cc e pts th e h ig he st lev el o f R F A na lyz er Inp u t.
Th e T/R C o nn e cto r s ho uld b e s el ec ted a s th e RF In p ut c o nn ec tor w he n c o nn ec tin g th e
Te st Se t d ire ctl y to U U T v ia RF C a ble .
3. 11. 4 .C TR /A NT
Se le ctin g t he T/R C on n ec tor f or R F Ou tp ut a nd th e A N T C on n ec tor f or R F Inp ut p ro vid e s
th e lo w es t le ve l o f R F G e n ou tpu t a n d th e m os t se n sitiv e RF A na ly ze r In pu t.
Th e AN T C on n ec tor is t yp ica lly u se d as th e I np ut co nn ec to r fo r "o ve r-t he -a ir" te st ing .
Te st Se t O p er at ion
RF Out = GEN
RF In = ANT
Fig . 3 -29 G E N /A NT T w o P o rt D u ple x T e st S e tup
RF Out = GEN
RF In = T/R
F ig. 3 -3 0 G EN /T R T wo P or t D up lex T es t S et up
RF Out = T/R
RF In = ANT
F ig. 3-3 1 T R/A N T Tw o P ort D up lex T es t S etu p
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