Viavi 3900 Series Operation Manual page 195

6. 5. 5. H Tr ig g er S o ft Key
Th e Tr igg er So ft K e y a cc e sse s fea tu re s to c on tro l ho w th e t rac e is tr igg er ed .
6. 5. 5. I Tr ace S o ft Key
Th e Tr ac e T rig ge r S o ft K ey is ac ce ss ed b y p re ss ing th e T rig g er S o ft K e y.
Whe n R EP E AT is se le cte d the tra ce s we e ps co nt inu ou sly a s lo n g a s t rigg e r co n ditio n s
ar e m e t.
Whe n SI NG L E is s e lec ted th e tra ce trig ge rs a s in gle sw e ep th e ne xt t im e t rigg e r
co nd itio ns a re me t.
6. 5. 5. J Arm - T ri gg er S o ft Key
Whe n T ra ce - Re p ea t/S ing le i s se t to S IN G L E a nd the Ar m - T rig ge r S of t K e y is p re ss ed ,
th e tr ac e tr igg er s a sin g le s w ee p th e ne xt tim e t rigg e r co n ditio n s a re me t. A ft er t he sw e ep
is o bt ain ed , th e T rig ge r s tate b ec om e s in ac tiv e u ntil t he Ar m - Tr igg er So ft K ey is p re ss ed
ag ai n. Th is so ft k ey is a cc e sse d by p res sin g the T rig ge r S of t K ey .
R a di o T e st Ins tru me nt s
Fig . 6 -3 9 O s cill os co pe T rigg e r S oft Ke ys
6 - 37