Viavi 3900 Series Operation Manual page 187

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6. 4. 5. M
S tor e Tr ace S o ft Key
Th e Sto re Tr ac e S o ft K ey s a llow s a u se r to st ore a sig na l tra ce . If m o re tha n on e ty p e o f
tra ce is en ab le d th e tra ce s a re st ore d in t he fo llow in g p rio rity :
C ap tur ed T rac e (P rior ity 1 )
P ea k T ra ce (P rio rity 2)
A ve rag e Tra c e (P ri orit y 3 )
Liv e Tra c e (P rio rity 4 )
Fo r e xa m pl e, i f A ve rag e an d Pe ak T ra ce s a re bo th en ab le d a n d a tra ce h as b ee n
ca pt ure d, th e Ca pt ure d T rac e is sto re d. If A ve ra ge a nd P e ak Tr ac es a re be in g d is pla ye d,
th e Pe ak t rac e is st ore d. R ef er to th e fo llow in g ch ar t fo r no te s a b ou t h o w to s tore sp ec ific
tra ce ty pe s.
Tr ac e T y pe
6. 4. 5. N
Rec al l T ra ce S oft Ke y
Th e Re c all T ra ce S oft K ey op en s a d ia log b ox tha t a llo ws th e us er to lo a d s to red s ign al
tra ce .
6. 4. 5. O
P eak H ol d S o ft Key
Whe n P e ak H old O N is se lec te d, th e m a xim u m va lue at ea ch fre qu en cy po in t is d isp lay ed
to pro d uc e t he R ED M a x H o ld tra ce . T his tra ce is cle ar ed by s ele ctin g P ea k H o ld O F F .
Pe a k H o ld m u st be re se t (t og gle d O N/ OF F ) w he n Av er ag e rea d ing s a re
En a ble d/ Dis ab le d. T he wh ite Liv e tra ce is al so d isp la ye d a nd c an be av era g ed d e pe nd in g
on th e cu rre nt s e tting . T h is s oft ke y i s a cc es se d by pr es sin g t he T rac e So ft K e y.
6. 4. 5. P
S et Refe ren ce S o ft Key
Whe n the S et R efe re nc e S o ft K ey is pr es se d, the T es t S et sto re s c urr en t tra c e d at a w h ich
is u s ed to es tab lis h a re fe ren ce tr ac e w h en R ef ere nc e M od e is s ele ct ed . T his so ft k ey is
ac ce ss ed b y p re ss ing th e T ra ce S of t K ey .
6. 4. 5. Q
Tr ace M o d e S oft Ke y
Se le cts N or m al o r R e fer en ce tra ce m o de of op er ati on fo r th e a n aly ze r tra c e. Wh e n
R efe re nc e M o d e is se le cte d, the T es t S et us es th e las t st ore d tra ce re fer en ce (re fe r to
Se t R e fer en ce S of t K ey ) to es ta blis h a fr eq ue n cy res po n se of the c ha ra cte ris tics of th e
ca bli ng an d tes t s etu p . T his re sp on se is us ed a s a re fer en ce fo r th e ac tive tra c e b ein g
dis pl ay ed o n th e S p ec tru m A n aly ze r Tile . Th is s oft k ey is ac ce ss ed by p re ss ing the Tr ac e
So ft Ke y.
R a di o T e st Ins tru me nt s
C ap tu re d Tr ac e
C a ptu re T rac e mu s t be e ng ag e d.
P ea k Tr ac e
E n ab le Pe ak T rac e .
C le ar an y C a pt ure d Tra c e.
A v er ag e Tr ac e
E n ab le Av er ag e T ra ce .
P e ak Tr ac e m u st be O F F.
C le ar an y C a pt ure d Tra c e.
Liv e Tr ac e
A ve ra ge a nd P ea k Tra ce m u st b e O FF .
C le ar an y C a pt ure d Tra c e.
S et up to S to re Tr ac e
6 - 29

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