Wavetek HD110B Especificaciones descargar pdf (Pagina 10)

MEASURING PROCEDURES

General Procedures:

❶

When connecting or disconnecting test leads to

a circuit, always first turn off power to device or circuit being tested and

discharge all capacitors.

❷

If magnitude of signal is not known, set

switch to highest range and reduce until satisfactory reading is

obtained.

❸

Strictly observe the max input limits.

D • Meßprozeduren

Allgemein: ❶ Vor Verbinden und Trennen der Meßkabel mit dem Schaltkreis,

diesen abschalten und Kondensatoren entladen, ❷ Bei unbekannter Signalgröße,

bei höchstem Bereich beginnen and dann niedriger schalten bis gate Auflösung

erreicht wird. ❸ Maximale Grenzen nicht überschreiten.

E • Procedimientos de medida

En general:. ❶ Cuando vaya a aplicar o retirar las pumas de prueba a/de un cir-

cuito, en primer lugar desconecte siempre la alimentación del dispositivo o cir-

cuito sometido a prueba y descargue todos los condensadores. ❷ si no conoce

la magnitud de la señal, ponga el selector en la escala más alta y vaya reducien-

do hasta obtener una lectura satisfactoria, ❸ Observe estrictamente los límites

máximos de entrada .

F • Procédures de Mesure

Général: ❶ Avant de connecter ou de déconnecter les cordons de test, coupez I

lálimentation du circuit mesuré et déchargez les condensateurs. ❷ Si la magni-

tude du signal n’est pas connue, commencez avec le calibre le plus élevé, et

diminuez ensuite jusqu'à obtenir une bonne lecture. ❸ Ne dépassez pas les lim-

ites d'entrée.

DC AND VOLTAGE MEASUREMENT (See Fig 1)

❶

Connect red test lead to V-W Input and black test lead to COM Input.

❷

Set

Function/Range Switch to desired DCV or ACV position.

❸

Touch Probe tips

across voltage source (in parallel with circuit).

❹

Voltage value will appear on

Digital Display along with the voltage polarity (negative DC measurements).

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The AC converter used in the HD110, HD110T and

320 models is "average-responding." An RMS value is determined by first recti-

fying and filtering the signal to obtain the average value. The average value is

then scaled upward by a factor of 1.11 to obtain the RMS value. Different scaling

factors need to be applied for other waveforms (1 for square waves; 1.733 for

triangle; 3.247 for full wave rectified sine wave; 2.591 for half wave rectified sine

wave). Please note that these correction factors only apply for standard wave-

forms that are free from noise and distortion. True RMS values of nonsinusoidal

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