Ac Voltage Measurement - Digimaster DM38A Manual De Empleo

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B. AC Volta ge Mea sure ment
Warning – To avoid har ms to y ou or d amages to the Met er fro m elec tric shock, ple ase do not atte mpt
to m easure volta ge s higher th an 1 000 V or 750 V rm s althou gh rea dings may be obtained.
Tak e extra attention wh en m easuring high vol tages t o avoid electric shoc k.
To measu re AC V olt age, con n ect the Meter as f ollows:
7.
Insert th e red test lea d into t he VΩ te rmi na l an d th e bl ack test lead i nto the CO M te rmi nal.
8.
Set th e rot ary switch to a n appro pri ate measur em ent p ositi on i n V
9.
Con nect the test le ad acr oss with the o bj ect be ing me asu re d.
The m eas ur ed v al ue s ho ws on th e dis play , which is ef f ectiv e v alue of sine wav e (m ean valu e resp onse).
Note
If the v alue of v oltag e t o be measur ed is unkno wn, use the maximum m eas urem ent pos itio n (7 50 V) an d red uce
l
the r ange ste p by step u ntil a satisfactory rea din g is o btai ned.
The LCD disp lay s "1" in dicati ng the existi ng s elect ed rang e is ov er lo ad ed, it is re quire d to select a hi g her rang e i n
l
ord er to obt ain a cor rect r ea di ng.
In e ach r an ge, t he Meter has an input im pe dance of appr ox. 10 MΩ. This load ing eff ect can c ause me asu rement
l
err ors i n hig h im ped anc e circ uits. If the circu it impe dance is less t ha n o r e qual to 1 0k Ω, th e err or is ne gli gi bl e
(0.1 % o r less ).
When A C v oltag e me asu rem ent has bee n co mpl ete d, discon nect th e con nectio n bet wee n th e testin g le ads a nd
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the circ uit u nder test.
. range.
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Este manual también es adecuado para:

Dm38bDm39aDm39b