D Igita L M U Ltim E Ter; D M M Te St Tile - Viavi 3900 Series Operation Manual

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6 .6
DI G I TAL MUL TI M ET ER
Th e DM M (D igita l M u ltim e ter) Ti le d isp la ys th e re s ults o f re sis tan ce m e as ur em e nts a nd
AC an d D C cu rre n t a nd v o ltag e m ea su re m en ts . T he D M M Tile is s el ec ted f rom an y of th e
m ea su re m en t tile d ro p- do wn m en u s. D M M m e a su rem e nt li mi ts a re c on fig ure d o n th e D M M
Lim it s C o nfig u rati on Ti le.
6.6.1
DM M T est Ti le
Th e DM M (D igita l M u ltim e ter) Ti le d isp la ys th e re s ults o f re sis tan ce m e as ur em e nts a nd
AC an d D C cu rre n t a nd v o ltag e m ea su re m en ts . T he D M M Tile is s el ec ted f rom an y of th e
m ea su re m en t tile d rop -d ow n m en u s.
6. 6. 1. A
Fi el d / So ft Key Defi ni ti o ns
6. 6. 1. A. 1
S cal e
Th e s ca le of th e b ar gr ap h is s ele cte d fro m the S c ale d ro p- do wn m en u. A va ilab le s ett ing s
ar e A u to- ran g ing (A u to) or a fixe d va lu e. Th e se lec te d s ca le va lu e is d isp la ye d b e low th e
ba r g ra ph .
Au to -ra ng in g ( Au to ) is no t v alid w he n util izin g a n ex te rna l s hu nt to me a su re Cu rre n t
gr ea ter th an 2 Am p s. Th e sc ale m us t b e s e t m an u ally to the "2 0 A" s e lec tion w h en
pe rfo rm in g m e as u rem e nt s th a t ex ce ed 2 A m ps .
6. 6. 1. A. 2
Un its
Se le cts th e t yp e o f m e as ur em e nt to be pe rfo rm e d.
6. 6. 1. A. 3
Bar G ra ph s
Th e ba r g ra ph s p ro vid e a g ra ph ic rep re se nta tio n of t he m ea su re m en t b ein g pe rfo rm e d.
Th e gra p h's ho riz on ta l sc ale is se le cte d from the S ca le dro p -do w n m e n u.
6. 6. 1. A. 4
P eak (P k ) Hol d
Se le ctin g the P ea k Ho ld ra dio b utto n allo w s t he pe a k v alu e of m ea su re me n ts t o b e
ca pt ure d an d u pd ate d a s ne w pe a ks o ccu r. Th e p ea k va lue is s ho w n on th e b ar gr ap h an d
in the P ea k dig ita l re ad ou t fie ld .
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R a di o T e st Ins tru me nt s
F ig. 6- 40 D M M Ti le - M ax im ize d Vie w
6 - 38

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